Merge tag 'pull-la-20220606' of https://gitlab.com/rth7680/qemu into staging

Initial LoongArch support.

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# gpg: Signature made Mon 06 Jun 2022 04:09:10 PM PDT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-la-20220606' of https://gitlab.com/rth7680/qemu: (43 commits)
  target/loongarch: 'make check-tcg' support
  tests/tcg/loongarch64: Add hello/memory test in loongarch64 system
  target/loongarch: Add gdb support.
  hw/loongarch: Add LoongArch virt power manager support.
  hw/loongarch: Add LoongArch load elf function.
  hw/loongarch: Add LoongArch ls7a rtc device support
  hw/loongarch: Add some devices support for 3A5000.
  Enable common virtio pci support for LoongArch
  hw/loongarch: Add irq hierarchy for the system
  hw/intc: Add LoongArch extioi interrupt controller(EIOINTC)
  hw/intc: Add LoongArch ls7a msi interrupt controller support(PCH-MSI)
  hw/intc: Add LoongArch ls7a interrupt controller support(PCH-PIC)
  hw/loongarch: Add LoongArch ipi interrupt support(IPI)
  hw/loongarch: Add support loongson3 virt machine type.
  target/loongarch: Add timer related instructions support.
  target/loongarch: Add other core instructions support
  target/loongarch: Add TLB instruction support
  target/loongarch: Add LoongArch IOCSR instruction
  target/loongarch: Add LoongArch CSR instruction
  target/loongarch: Add constant timer support
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

75 files changed, 10158 insertions, 4 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 5fe8f7e..5580a36 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -212,6 +212,13 @@ S: Maintained
 F: target/hppa/
 F: disas/hppa.c
 
+LoongArch TCG CPUs
+M: Song Gao <gaosong@loongson.cn>
+M: Xiaojuan Yang <yangxiaojuan@loongson.cn>
+S: Maintained
+F: target/loongarch/
+F: tests/tcg/loongarch64/
+
 M68K TCG CPUs
 M: Laurent Vivier <laurent@vivier.eu>
 S: Maintained
@@ -1116,6 +1123,23 @@ F: include/hw/net/lasi_82596.h
 F: include/hw/pci-host/dino.h
 F: pc-bios/hppa-firmware.img
 
+LoongArch Machines
+------------------
+Virt
+M: Xiaojuan Yang <yangxiaojuan@loongson.cn>
+M: Song Gao <gaosong@loongson.cn>
+S: Maintained
+F: docs/system/loongarch/loongson3.rst
+F: configs/targets/loongarch64-softmmu.mak
+F: configs/devices/loongarch64-softmmu/default.mak
+F: hw/loongarch/
+F: include/hw/loongarch/virt.h
+F: include/hw/intc/loongarch_*.h
+F: hw/intc/loongarch_*.c
+F: include/hw/pci-host/ls7a.h
+F: hw/rtc/ls7a_rtc.c
+F: gdb-xml/loongarch*.xml
+
 M68K Machines
 -------------
 an5206
diff --git a/configs/devices/loongarch64-softmmu/default.mak b/configs/devices/loongarch64-softmmu/default.mak
new file mode 100644
index 0000000..928bc11
--- /dev/null
+++ b/configs/devices/loongarch64-softmmu/default.mak
@@ -0,0 +1,3 @@
+# Default configuration for loongarch64-softmmu
+
+CONFIG_LOONGARCH_VIRT=y
diff --git a/configs/targets/loongarch64-softmmu.mak b/configs/targets/loongarch64-softmmu.mak
new file mode 100644
index 0000000..7bc06c8
--- /dev/null
+++ b/configs/targets/loongarch64-softmmu.mak
@@ -0,0 +1,4 @@
+TARGET_ARCH=loongarch64
+TARGET_BASE_ARCH=loongarch
+TARGET_SUPPORTS_MTTCG=y
+TARGET_XML_FILES= gdb-xml/loongarch-base64.xml gdb-xml/loongarch-fpu64.xml
diff --git a/configure b/configure
index ac18ed4..e69537c 100755
--- a/configure
+++ b/configure
@@ -1831,6 +1831,7 @@ fi
 : ${cross_prefix_arm="arm-linux-gnueabihf-"}
 : ${cross_prefix_armeb="$cross_prefix_arm"}
 : ${cross_prefix_hexagon="hexagon-unknown-linux-musl-"}
+: ${cross_prefix_loongarch64="loongarch64-unknown-linux-gnu-"}
 : ${cross_prefix_hppa="hppa-linux-gnu-"}
 : ${cross_prefix_i386="i686-linux-gnu-"}
 : ${cross_prefix_m68k="m68k-linux-gnu-"}
diff --git a/docs/system/loongarch/loongson3.rst b/docs/system/loongarch/loongson3.rst
new file mode 100644
index 0000000..fa3acd0
--- /dev/null
+++ b/docs/system/loongarch/loongson3.rst
@@ -0,0 +1,41 @@
+:orphan:
+
+==========================================
+loongson3 virt generic platform (``virt``)
+==========================================
+
+The ``virt`` machine use gpex host bridge, and there are some
+emulated devices on virt board, such as loongson7a RTC device,
+IOAPIC device, ACPI device and so on.
+
+Supported devices
+-----------------
+
+The ``virt`` machine supports:
+- Gpex host bridge
+- Ls7a RTC device
+- Ls7a IOAPIC device
+- Ls7a ACPI device
+- Fw_cfg device
+- PCI/PCIe devices
+- Memory device
+- CPU device. Type: Loongson-3A5000.
+
+CPU and machine Type
+--------------------
+
+The ``qemu-system-loongarch64`` provides emulation for virt
+machine. You can specify the machine type ``virt`` and
+cpu type ``Loongson-3A5000``.
+
+Boot options
+------------
+
+Now the ``virt`` machine can run test program in ELF format and the
+method of compiling is in target/loongarch/README.
+
+.. code-block:: bash
+
+  $ qemu-system-loongarch64 -machine virt -m 4G -cpu Loongson-3A5000 \
+      -smp 1 -kernel hello -monitor none -display none \
+      -chardev file,path=hello.out,id=output -serial chardev:output
diff --git a/gdb-xml/loongarch-base64.xml b/gdb-xml/loongarch-base64.xml
new file mode 100644
index 0000000..4962bdb
--- /dev/null
+++ b/gdb-xml/loongarch-base64.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2021 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.loongarch.base">
+  <reg name="r0" bitsize="64" type="uint64" group="general"/>
+  <reg name="r1" bitsize="64" type="uint64" group="general"/>
+  <reg name="r2" bitsize="64" type="uint64" group="general"/>
+  <reg name="r3" bitsize="64" type="uint64" group="general"/>
+  <reg name="r4" bitsize="64" type="uint64" group="general"/>
+  <reg name="r5" bitsize="64" type="uint64" group="general"/>
+  <reg name="r6" bitsize="64" type="uint64" group="general"/>
+  <reg name="r7" bitsize="64" type="uint64" group="general"/>
+  <reg name="r8" bitsize="64" type="uint64" group="general"/>
+  <reg name="r9" bitsize="64" type="uint64" group="general"/>
+  <reg name="r10" bitsize="64" type="uint64" group="general"/>
+  <reg name="r11" bitsize="64" type="uint64" group="general"/>
+  <reg name="r12" bitsize="64" type="uint64" group="general"/>
+  <reg name="r13" bitsize="64" type="uint64" group="general"/>
+  <reg name="r14" bitsize="64" type="uint64" group="general"/>
+  <reg name="r15" bitsize="64" type="uint64" group="general"/>
+  <reg name="r16" bitsize="64" type="uint64" group="general"/>
+  <reg name="r17" bitsize="64" type="uint64" group="general"/>
+  <reg name="r18" bitsize="64" type="uint64" group="general"/>
+  <reg name="r19" bitsize="64" type="uint64" group="general"/>
+  <reg name="r20" bitsize="64" type="uint64" group="general"/>
+  <reg name="r21" bitsize="64" type="uint64" group="general"/>
+  <reg name="r22" bitsize="64" type="uint64" group="general"/>
+  <reg name="r23" bitsize="64" type="uint64" group="general"/>
+  <reg name="r24" bitsize="64" type="uint64" group="general"/>
+  <reg name="r25" bitsize="64" type="uint64" group="general"/>
+  <reg name="r26" bitsize="64" type="uint64" group="general"/>
+  <reg name="r27" bitsize="64" type="uint64" group="general"/>
+  <reg name="r28" bitsize="64" type="uint64" group="general"/>
+  <reg name="r29" bitsize="64" type="uint64" group="general"/>
+  <reg name="r30" bitsize="64" type="uint64" group="general"/>
+  <reg name="r31" bitsize="64" type="uint64" group="general"/>
+  <reg name="pc" bitsize="64" type="code_ptr" group="general"/>
+  <reg name="badvaddr" bitsize="64" type="code_ptr" group="general"/>
+</feature>
diff --git a/gdb-xml/loongarch-fpu64.xml b/gdb-xml/loongarch-fpu64.xml
new file mode 100644
index 0000000..e52cf89
--- /dev/null
+++ b/gdb-xml/loongarch-fpu64.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2021 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.loongarch.fpu">
+
+  <union id="fpu64type">
+    <field name="f" type="ieee_single"/>
+    <field name="d" type="ieee_double"/>
+  </union>
+
+  <reg name="f0" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f1" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f2" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f3" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f4" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f5" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f6" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f7" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f8" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f9" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f10" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f11" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f12" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f13" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f14" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f15" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f16" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f17" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f18" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f19" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f20" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f21" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f22" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f23" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f24" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f25" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f26" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f27" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f28" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f29" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f30" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="f31" bitsize="64" type="fpu64type" group="float"/>
+  <reg name="fcc0" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc1" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc2" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc3" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc4" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc5" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc6" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcc7" bitsize="8" type="uint8" group="float"/>
+  <reg name="fcsr" bitsize="32" type="uint32" group="float"/>
+</feature>
diff --git a/hw/Kconfig b/hw/Kconfig
index 50e0952..38233bb 100644
--- a/hw/Kconfig
+++ b/hw/Kconfig
@@ -50,6 +50,7 @@ source avr/Kconfig
 source cris/Kconfig
 source hppa/Kconfig
 source i386/Kconfig
+source loongarch/Kconfig
 source m68k/Kconfig
 source microblaze/Kconfig
 source mips/Kconfig
diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig
index eded1b5..ecd2883 100644
--- a/hw/intc/Kconfig
+++ b/hw/intc/Kconfig
@@ -87,3 +87,18 @@ config M68K_IRQC
 
 config NIOS2_VIC
     bool
+
+config LOONGARCH_IPI
+    bool
+
+config LOONGARCH_PCH_PIC
+    bool
+    select UNIMP
+
+config LOONGARCH_PCH_MSI
+    select MSI_NONBROKEN
+    bool
+    select UNIMP
+
+config LOONGARCH_EXTIOI
+    bool
diff --git a/hw/intc/loongarch_extioi.c b/hw/intc/loongarch_extioi.c
new file mode 100644
index 0000000..2280396
--- /dev/null
+++ b/hw/intc/loongarch_extioi.c
@@ -0,0 +1,312 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Loongson 3A5000 ext interrupt controller emulation
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/module.h"
+#include "qemu/log.h"
+#include "hw/irq.h"
+#include "hw/sysbus.h"
+#include "hw/loongarch/virt.h"
+#include "hw/qdev-properties.h"
+#include "exec/address-spaces.h"
+#include "hw/intc/loongarch_extioi.h"
+#include "migration/vmstate.h"
+#include "trace.h"
+
+
+static void extioi_update_irq(LoongArchExtIOI *s, int irq, int level)
+{
+    int ipnum, cpu, found, irq_index, irq_mask;
+
+    ipnum = s->sw_ipmap[irq / 32];
+    cpu = s->sw_coremap[irq];
+    irq_index = irq / 32;
+    irq_mask = 1 << (irq & 0x1f);
+
+    if (level) {
+        /* if not enable return false */
+        if (((s->enable[irq_index]) & irq_mask) == 0) {
+            return;
+        }
+        s->coreisr[cpu][irq_index] |= irq_mask;
+        found = find_first_bit(s->sw_isr[cpu][ipnum], EXTIOI_IRQS);
+        set_bit(irq, s->sw_isr[cpu][ipnum]);
+        if (found < EXTIOI_IRQS) {
+            /* other irq is handling, need not update parent irq level */
+            return;
+        }
+    } else {
+        s->coreisr[cpu][irq_index] &= ~irq_mask;
+        clear_bit(irq, s->sw_isr[cpu][ipnum]);
+        found = find_first_bit(s->sw_isr[cpu][ipnum], EXTIOI_IRQS);
+        if (found < EXTIOI_IRQS) {
+            /* other irq is handling, need not update parent irq level */
+            return;
+        }
+    }
+    qemu_set_irq(s->parent_irq[cpu][ipnum], level);
+}
+
+static void extioi_setirq(void *opaque, int irq, int level)
+{
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque);
+    trace_loongarch_extioi_setirq(irq, level);
+    if (level) {
+        /*
+         * s->isr should be used in vmstate structure,
+         * but it not support 'unsigned long',
+         * so we have to switch it.
+         */
+        set_bit(irq, (unsigned long *)s->isr);
+    } else {
+        clear_bit(irq, (unsigned long *)s->isr);
+    }
+    extioi_update_irq(s, irq, level);
+}
+
+static uint64_t extioi_readw(void *opaque, hwaddr addr, unsigned size)
+{
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque);
+    unsigned long offset = addr & 0xffff;
+    uint32_t index, cpu, ret = 0;
+
+    switch (offset) {
+    case EXTIOI_NODETYPE_START ... EXTIOI_NODETYPE_END - 1:
+        index = (offset - EXTIOI_NODETYPE_START) >> 2;
+        ret = s->nodetype[index];
+        break;
+    case EXTIOI_IPMAP_START ... EXTIOI_IPMAP_END - 1:
+        index = (offset - EXTIOI_IPMAP_START) >> 2;
+        ret = s->ipmap[index];
+        break;
+    case EXTIOI_ENABLE_START ... EXTIOI_ENABLE_END - 1:
+        index = (offset - EXTIOI_ENABLE_START) >> 2;
+        ret = s->enable[index];
+        break;
+    case EXTIOI_BOUNCE_START ... EXTIOI_BOUNCE_END - 1:
+        index = (offset - EXTIOI_BOUNCE_START) >> 2;
+        ret = s->bounce[index];
+        break;
+    case EXTIOI_COREISR_START ... EXTIOI_COREISR_END - 1:
+        index = ((offset - EXTIOI_COREISR_START) & 0x1f) >> 2;
+        cpu = ((offset - EXTIOI_COREISR_START) >> 8) & 0x3;
+        ret = s->coreisr[cpu][index];
+        break;
+    case EXTIOI_COREMAP_START ... EXTIOI_COREMAP_END - 1:
+        index = (offset - EXTIOI_COREMAP_START) >> 2;
+        ret = s->coremap[index];
+        break;
+    default:
+        break;
+    }
+
+    trace_loongarch_extioi_readw(addr, ret);
+    return ret;
+}
+
+static inline void extioi_enable_irq(LoongArchExtIOI *s, int index,\
+                                     uint32_t mask, int level)
+{
+    uint32_t val;
+    int irq;
+
+    val = mask & s->isr[index];
+    irq = ctz32(val);
+    while (irq != 32) {
+        /*
+         * enable bit change from 0 to 1,
+         * need to update irq by pending bits
+         */
+        extioi_update_irq(s, irq + index * 32, level);
+        val &= ~(1 << irq);
+        irq = ctz32(val);
+    }
+}
+
+static void extioi_writew(void *opaque, hwaddr addr,
+                          uint64_t val, unsigned size)
+{
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque);
+    int i, cpu, index, old_data, irq;
+    uint32_t offset;
+
+    trace_loongarch_extioi_writew(addr, val);
+    offset = addr & 0xffff;
+
+    switch (offset) {
+    case EXTIOI_NODETYPE_START ... EXTIOI_NODETYPE_END - 1:
+        index = (offset - EXTIOI_NODETYPE_START) >> 2;
+        s->nodetype[index] = val;
+        break;
+    case EXTIOI_IPMAP_START ... EXTIOI_IPMAP_END - 1:
+        /*
+         * ipmap cannot be set at runtime, can be set only at the beginning
+         * of intr driver, need not update upper irq level
+         */
+        index = (offset - EXTIOI_IPMAP_START) >> 2;
+        s->ipmap[index] = val;
+        /*
+         * loongarch only support little endian,
+         * so we paresd the value with little endian.
+         */
+        val = cpu_to_le64(val);
+        for (i = 0; i < 4; i++) {
+            uint8_t ipnum;
+            ipnum = val & 0xff;
+            ipnum = ctz32(ipnum);
+            ipnum = (ipnum >= 4) ? 0 : ipnum;
+            s->sw_ipmap[index * 4 + i] = ipnum;
+            val = val >> 8;
+        }
+
+        break;
+    case EXTIOI_ENABLE_START ... EXTIOI_ENABLE_END - 1:
+        index = (offset - EXTIOI_ENABLE_START) >> 2;
+        old_data = s->enable[index];
+        s->enable[index] = val;
+
+        /* unmask irq */
+        val = s->enable[index] & ~old_data;
+        extioi_enable_irq(s, index, val, 1);
+
+        /* mask irq */
+        val = ~s->enable[index] & old_data;
+        extioi_enable_irq(s, index, val, 0);
+        break;
+    case EXTIOI_BOUNCE_START ... EXTIOI_BOUNCE_END - 1:
+        /* do not emulate hw bounced irq routing */
+        index = (offset - EXTIOI_BOUNCE_START) >> 2;
+        s->bounce[index] = val;
+        break;
+    case EXTIOI_COREISR_START ... EXTIOI_COREISR_END - 1:
+        index = ((offset - EXTIOI_COREISR_START) & 0x1f) >> 2;
+        cpu = ((offset - EXTIOI_COREISR_START) >> 8) & 0x3;
+        old_data = s->coreisr[cpu][index];
+        s->coreisr[cpu][index] = old_data & ~val;
+        /* write 1 to clear interrrupt */
+        old_data &= val;
+        irq = ctz32(old_data);
+        while (irq != 32) {
+            extioi_update_irq(s, irq + index * 32, 0);
+            old_data &= ~(1 << irq);
+            irq = ctz32(old_data);
+        }
+        break;
+    case EXTIOI_COREMAP_START ... EXTIOI_COREMAP_END - 1:
+        irq = offset - EXTIOI_COREMAP_START;
+        index = irq / 4;
+        s->coremap[index] = val;
+        /*
+         * loongarch only support little endian,
+         * so we paresd the value with little endian.
+         */
+        val = cpu_to_le64(val);
+
+        for (i = 0; i < 4; i++) {
+            cpu = val & 0xff;
+            cpu = ctz32(cpu);
+            cpu = (cpu >= 4) ? 0 : cpu;
+            val = val >> 8;
+
+            if (s->sw_coremap[irq + i] == cpu) {
+                continue;
+            }
+
+            if (test_bit(irq, (unsigned long *)s->isr)) {
+                /*
+                 * lower irq at old cpu and raise irq at new cpu
+                 */
+                extioi_update_irq(s, irq + i, 0);
+                s->sw_coremap[irq + i] = cpu;
+                extioi_update_irq(s, irq + i, 1);
+            } else {
+                s->sw_coremap[irq + i] = cpu;
+            }
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+static const MemoryRegionOps extioi_ops = {
+    .read = extioi_readw,
+    .write = extioi_writew,
+    .impl.min_access_size = 4,
+    .impl.max_access_size = 4,
+    .valid.min_access_size = 4,
+    .valid.max_access_size = 8,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static const VMStateDescription vmstate_loongarch_extioi = {
+    .name = TYPE_LOONGARCH_EXTIOI,
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(bounce, LoongArchExtIOI, EXTIOI_IRQS_GROUP_COUNT),
+        VMSTATE_UINT32_2DARRAY(coreisr, LoongArchExtIOI, LOONGARCH_MAX_VCPUS,
+                               EXTIOI_IRQS_GROUP_COUNT),
+        VMSTATE_UINT32_ARRAY(nodetype, LoongArchExtIOI,
+                             EXTIOI_IRQS_NODETYPE_COUNT / 2),
+        VMSTATE_UINT32_ARRAY(enable, LoongArchExtIOI, EXTIOI_IRQS / 32),
+        VMSTATE_UINT32_ARRAY(isr, LoongArchExtIOI, EXTIOI_IRQS / 32),
+        VMSTATE_UINT32_ARRAY(ipmap, LoongArchExtIOI, EXTIOI_IRQS_IPMAP_SIZE / 4),
+        VMSTATE_UINT32_ARRAY(coremap, LoongArchExtIOI, EXTIOI_IRQS / 4),
+        VMSTATE_UINT8_ARRAY(sw_ipmap, LoongArchExtIOI, EXTIOI_IRQS_IPMAP_SIZE),
+        VMSTATE_UINT8_ARRAY(sw_coremap, LoongArchExtIOI, EXTIOI_IRQS),
+
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void loongarch_extioi_instance_init(Object *obj)
+{
+    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(obj);
+    int i, cpu, pin;
+
+    for (i = 0; i < EXTIOI_IRQS; i++) {
+        sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]);
+    }
+
+    qdev_init_gpio_in(DEVICE(obj), extioi_setirq, EXTIOI_IRQS);
+
+    for (cpu = 0; cpu < LOONGARCH_MAX_VCPUS; cpu++) {
+        memory_region_init_io(&s->extioi_iocsr_mem[cpu], OBJECT(s), &extioi_ops,
+                              s, "extioi_iocsr", 0x900);
+        sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->extioi_iocsr_mem[cpu]);
+        for (pin = 0; pin < LS3A_INTC_IP; pin++) {
+            qdev_init_gpio_out(DEVICE(obj), &s->parent_irq[cpu][pin], 1);
+        }
+    }
+    memory_region_init_io(&s->extioi_system_mem, OBJECT(s), &extioi_ops,
+                          s, "extioi_system_mem", 0x900);
+    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->extioi_system_mem);
+}
+
+static void loongarch_extioi_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->vmsd = &vmstate_loongarch_extioi;
+}
+
+static const TypeInfo loongarch_extioi_info = {
+    .name          = TYPE_LOONGARCH_EXTIOI,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_init = loongarch_extioi_instance_init,
+    .instance_size = sizeof(struct LoongArchExtIOI),
+    .class_init    = loongarch_extioi_class_init,
+};
+
+static void loongarch_extioi_register_types(void)
+{
+    type_register_static(&loongarch_extioi_info);
+}
+
+type_init(loongarch_extioi_register_types)
diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c
new file mode 100644
index 0000000..66bee93
--- /dev/null
+++ b/hw/intc/loongarch_ipi.c
@@ -0,0 +1,242 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch ipi interrupt support
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "hw/intc/loongarch_ipi.h"
+#include "hw/irq.h"
+#include "qapi/error.h"
+#include "qemu/log.h"
+#include "exec/address-spaces.h"
+#include "hw/loongarch/virt.h"
+#include "migration/vmstate.h"
+#include "target/loongarch/internals.h"
+#include "trace.h"
+
+static uint64_t loongarch_ipi_readl(void *opaque, hwaddr addr, unsigned size)
+{
+    IPICore *s = opaque;
+    uint64_t ret = 0;
+    int index = 0;
+
+    addr &= 0xff;
+    switch (addr) {
+    case CORE_STATUS_OFF:
+        ret = s->status;
+        break;
+    case CORE_EN_OFF:
+        ret = s->en;
+        break;
+    case CORE_SET_OFF:
+        ret = 0;
+        break;
+    case CORE_CLEAR_OFF:
+        ret = 0;
+        break;
+    case CORE_BUF_20 ... CORE_BUF_38 + 4:
+        index = (addr - CORE_BUF_20) >> 2;
+        ret = s->buf[index];
+        break;
+    default:
+        qemu_log_mask(LOG_UNIMP, "invalid read: %x", (uint32_t)addr);
+        break;
+    }
+
+    trace_loongarch_ipi_read(size, (uint64_t)addr, ret);
+    return ret;
+}
+
+static int get_ipi_data(target_ulong val)
+{
+    int i, mask, data;
+
+    data = val >> 32;
+    mask = (val >> 27) & 0xf;
+
+    for (i = 0; i < 4; i++) {
+        if ((mask >> i) & 1) {
+            data &= ~(0xff << (i * 8));
+        }
+    }
+    return data;
+}
+
+static void ipi_send(uint64_t val)
+{
+    int cpuid, data;
+    CPULoongArchState *env;
+
+    cpuid = (val >> 16) & 0x3ff;
+    /* IPI status vector */
+    data = 1 << (val & 0x1f);
+    qemu_mutex_lock_iothread();
+    CPUState *cs = qemu_get_cpu(cpuid);
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    env = &cpu->env;
+    loongarch_cpu_set_irq(cpu, IRQ_IPI, 1);
+    qemu_mutex_unlock_iothread();
+    address_space_stl(&env->address_space_iocsr, 0x1008,
+                      data, MEMTXATTRS_UNSPECIFIED, NULL);
+
+}
+
+static void mail_send(uint64_t val)
+{
+    int cpuid, data;
+    hwaddr addr;
+    CPULoongArchState *env;
+
+    cpuid = (val >> 16) & 0x3ff;
+    addr = 0x1020 + (val & 0x1c);
+    CPUState *cs = qemu_get_cpu(cpuid);
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    env = &cpu->env;
+    data = get_ipi_data(val);
+    address_space_stl(&env->address_space_iocsr, addr,
+                      data, MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+static void any_send(uint64_t val)
+{
+    int cpuid, data;
+    hwaddr addr;
+    CPULoongArchState *env;
+
+    cpuid = (val >> 16) & 0x3ff;
+    addr = val & 0xffff;
+    CPUState *cs = qemu_get_cpu(cpuid);
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    env = &cpu->env;
+    data = get_ipi_data(val);
+    address_space_stl(&env->address_space_iocsr, addr,
+                      data, MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+static void loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
+                                 unsigned size)
+{
+    IPICore *s = opaque;
+    int index = 0;
+
+    addr &= 0xff;
+    trace_loongarch_ipi_write(size, (uint64_t)addr, val);
+    switch (addr) {
+    case CORE_STATUS_OFF:
+        qemu_log_mask(LOG_GUEST_ERROR, "can not be written");
+        break;
+    case CORE_EN_OFF:
+        s->en = val;
+        break;
+    case CORE_SET_OFF:
+        s->status |= val;
+        if (s->status != 0 && (s->status & s->en) != 0) {
+            qemu_irq_raise(s->irq);
+        }
+        break;
+    case CORE_CLEAR_OFF:
+        s->status &= ~val;
+        if (s->status == 0 && s->en != 0) {
+            qemu_irq_lower(s->irq);
+        }
+        break;
+    case CORE_BUF_20 ... CORE_BUF_38 + 4:
+        index = (addr - CORE_BUF_20) >> 2;
+        s->buf[index] = val;
+        break;
+    case IOCSR_IPI_SEND:
+        ipi_send(val);
+        break;
+    case IOCSR_MAIL_SEND:
+        mail_send(val);
+        break;
+    case IOCSR_ANY_SEND:
+        any_send(val);
+        break;
+    default:
+        qemu_log_mask(LOG_UNIMP, "invalid write: %x", (uint32_t)addr);
+        break;
+    }
+}
+
+static const MemoryRegionOps loongarch_ipi_ops = {
+    .read = loongarch_ipi_readl,
+    .write = loongarch_ipi_writel,
+    .impl.min_access_size = 4,
+    .impl.max_access_size = 4,
+    .valid.min_access_size = 4,
+    .valid.max_access_size = 8,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void loongarch_ipi_init(Object *obj)
+{
+    int cpu;
+    LoongArchMachineState *lams;
+    LoongArchIPI *s = LOONGARCH_IPI(obj);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+    Object *machine = qdev_get_machine();
+    ObjectClass *mc = object_get_class(machine);
+    /* 'lams' should be initialized */
+    if (!strcmp(MACHINE_CLASS(mc)->name, "none")) {
+        return;
+    }
+    lams = LOONGARCH_MACHINE(machine);
+    for (cpu = 0; cpu < MAX_IPI_CORE_NUM; cpu++) {
+        memory_region_init_io(&s->ipi_iocsr_mem[cpu], obj, &loongarch_ipi_ops,
+                            &lams->ipi_core[cpu], "loongarch_ipi_iocsr", 0x100);
+        sysbus_init_mmio(sbd, &s->ipi_iocsr_mem[cpu]);
+        qdev_init_gpio_out(DEVICE(obj), &lams->ipi_core[cpu].irq, 1);
+    }
+}
+
+static const VMStateDescription vmstate_ipi_core = {
+    .name = "ipi-single",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(status, IPICore),
+        VMSTATE_UINT32(en, IPICore),
+        VMSTATE_UINT32(set, IPICore),
+        VMSTATE_UINT32(clear, IPICore),
+        VMSTATE_UINT32_ARRAY(buf, IPICore, MAX_IPI_MBX_NUM * 2),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription vmstate_loongarch_ipi = {
+    .name = TYPE_LOONGARCH_IPI,
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = (VMStateField[]) {
+        VMSTATE_STRUCT_ARRAY(ipi_core, LoongArchMachineState,
+                             MAX_IPI_CORE_NUM, 0,
+                             vmstate_ipi_core, IPICore),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void loongarch_ipi_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->vmsd = &vmstate_loongarch_ipi;
+}
+
+static const TypeInfo loongarch_ipi_info = {
+    .name          = TYPE_LOONGARCH_IPI,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(LoongArchIPI),
+    .instance_init = loongarch_ipi_init,
+    .class_init    = loongarch_ipi_class_init,
+};
+
+static void loongarch_ipi_register_types(void)
+{
+    type_register_static(&loongarch_ipi_info);
+}
+
+type_init(loongarch_ipi_register_types)
diff --git a/hw/intc/loongarch_pch_msi.c b/hw/intc/loongarch_pch_msi.c
new file mode 100644
index 0000000..74bcdbd
--- /dev/null
+++ b/hw/intc/loongarch_pch_msi.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU Loongson 7A1000 msi interrupt controller.
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "hw/irq.h"
+#include "hw/intc/loongarch_pch_msi.h"
+#include "hw/intc/loongarch_pch_pic.h"
+#include "hw/pci/msi.h"
+#include "hw/misc/unimp.h"
+#include "migration/vmstate.h"
+#include "trace.h"
+
+static uint64_t loongarch_msi_mem_read(void *opaque, hwaddr addr, unsigned size)
+{
+    return 0;
+}
+
+static void loongarch_msi_mem_write(void *opaque, hwaddr addr,
+                                    uint64_t val, unsigned size)
+{
+    LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(opaque);
+    int irq_num = val & 0xff;
+
+    trace_loongarch_msi_set_irq(irq_num);
+    assert(irq_num < PCH_MSI_IRQ_NUM);
+    qemu_set_irq(s->pch_msi_irq[irq_num], 1);
+}
+
+static const MemoryRegionOps loongarch_pch_msi_ops = {
+    .read  = loongarch_msi_mem_read,
+    .write = loongarch_msi_mem_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void pch_msi_irq_handler(void *opaque, int irq, int level)
+{
+    LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(opaque);
+
+    qemu_set_irq(s->pch_msi_irq[irq], level);
+}
+
+static void loongarch_pch_msi_init(Object *obj)
+{
+    LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(obj);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+
+    memory_region_init_io(&s->msi_mmio, obj, &loongarch_pch_msi_ops,
+                          s, TYPE_LOONGARCH_PCH_MSI, 0x8);
+    sysbus_init_mmio(sbd, &s->msi_mmio);
+    msi_nonbroken = true;
+
+    qdev_init_gpio_out(DEVICE(obj), s->pch_msi_irq, PCH_MSI_IRQ_NUM);
+    qdev_init_gpio_in(DEVICE(obj), pch_msi_irq_handler, PCH_MSI_IRQ_NUM);
+}
+
+static const TypeInfo loongarch_pch_msi_info = {
+    .name          = TYPE_LOONGARCH_PCH_MSI,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(LoongArchPCHMSI),
+    .instance_init = loongarch_pch_msi_init,
+};
+
+static void loongarch_pch_msi_register_types(void)
+{
+    type_register_static(&loongarch_pch_msi_info);
+}
+
+type_init(loongarch_pch_msi_register_types)
diff --git a/hw/intc/loongarch_pch_pic.c b/hw/intc/loongarch_pch_pic.c
new file mode 100644
index 0000000..3c9814a
--- /dev/null
+++ b/hw/intc/loongarch_pch_pic.c
@@ -0,0 +1,431 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU Loongson 7A1000 I/O interrupt controller.
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "hw/loongarch/virt.h"
+#include "hw/irq.h"
+#include "hw/intc/loongarch_pch_pic.h"
+#include "migration/vmstate.h"
+#include "trace.h"
+
+static void pch_pic_update_irq(LoongArchPCHPIC *s, uint64_t mask, int level)
+{
+    unsigned long val;
+    int irq;
+
+    if (level) {
+        val = mask & s->intirr & ~s->int_mask;
+        if (val) {
+            irq = find_first_bit(&val, 64);
+            s->intisr |= 0x1ULL << irq;
+            qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1);
+        }
+    } else {
+        val = mask & s->intisr;
+        if (val) {
+            irq = find_first_bit(&val, 64);
+            s->intisr &= ~(0x1ULL << irq);
+            qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0);
+        }
+    }
+}
+
+static void pch_pic_irq_handler(void *opaque, int irq, int level)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    uint64_t mask = 1ULL << irq;
+
+    assert(irq < PCH_PIC_IRQ_NUM);
+    trace_loongarch_pch_pic_irq_handler(irq, level);
+
+    if (s->intedge & mask) {
+        /* Edge triggered */
+        if (level) {
+            if ((s->last_intirr & mask) == 0) {
+                s->intirr |= mask;
+            }
+            s->last_intirr |= mask;
+        } else {
+            s->last_intirr &= ~mask;
+        }
+    } else {
+        /* Level triggered */
+        if (level) {
+            s->intirr |= mask;
+            s->last_intirr |= mask;
+        } else {
+            s->intirr &= ~mask;
+            s->last_intirr &= ~mask;
+        }
+    }
+    pch_pic_update_irq(s, mask, level);
+}
+
+static uint64_t loongarch_pch_pic_low_readw(void *opaque, hwaddr addr,
+                                            unsigned size)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    uint64_t val = 0;
+    uint32_t offset = addr & 0xfff;
+
+    switch (offset) {
+    case PCH_PIC_INT_ID_LO:
+        val = PCH_PIC_INT_ID_VAL;
+        break;
+    case PCH_PIC_INT_ID_HI:
+        val = PCH_PIC_INT_ID_NUM;
+        break;
+    case PCH_PIC_INT_MASK_LO:
+        val = (uint32_t)s->int_mask;
+        break;
+    case PCH_PIC_INT_MASK_HI:
+        val = s->int_mask >> 32;
+        break;
+    case PCH_PIC_INT_EDGE_LO:
+        val = (uint32_t)s->intedge;
+        break;
+    case PCH_PIC_INT_EDGE_HI:
+        val = s->intedge >> 32;
+        break;
+    case PCH_PIC_HTMSI_EN_LO:
+        val = (uint32_t)s->htmsi_en;
+        break;
+    case PCH_PIC_HTMSI_EN_HI:
+        val = s->htmsi_en >> 32;
+        break;
+    case PCH_PIC_AUTO_CTRL0_LO:
+    case PCH_PIC_AUTO_CTRL0_HI:
+    case PCH_PIC_AUTO_CTRL1_LO:
+    case PCH_PIC_AUTO_CTRL1_HI:
+        break;
+    default:
+        break;
+    }
+
+    trace_loongarch_pch_pic_low_readw(size, addr, val);
+    return val;
+}
+
+static uint64_t get_writew_val(uint64_t value, uint32_t target, bool hi)
+{
+    uint64_t mask = 0xffffffff00000000;
+    uint64_t data = target;
+
+    return hi ? (value & ~mask) | (data << 32) : (value & mask) | data;
+}
+
+static void loongarch_pch_pic_low_writew(void *opaque, hwaddr addr,
+                                         uint64_t value, unsigned size)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    uint32_t offset, old_valid, data = (uint32_t)value;
+    uint64_t old, int_mask;
+    offset = addr & 0xfff;
+
+    trace_loongarch_pch_pic_low_writew(size, addr, data);
+
+    switch (offset) {
+    case PCH_PIC_INT_MASK_LO:
+        old = s->int_mask;
+        s->int_mask = get_writew_val(old, data, 0);
+        old_valid = (uint32_t)old;
+        if (old_valid & ~data) {
+            pch_pic_update_irq(s, (old_valid & ~data), 1);
+        }
+        if (~old_valid & data) {
+            pch_pic_update_irq(s, (~old_valid & data), 0);
+        }
+        break;
+    case PCH_PIC_INT_MASK_HI:
+        old = s->int_mask;
+        s->int_mask = get_writew_val(old, data, 1);
+        old_valid = (uint32_t)(old >> 32);
+        int_mask = old_valid & ~data;
+        if (int_mask) {
+            pch_pic_update_irq(s, int_mask << 32, 1);
+        }
+        int_mask = ~old_valid & data;
+        if (int_mask) {
+            pch_pic_update_irq(s, int_mask << 32, 0);
+        }
+        break;
+    case PCH_PIC_INT_EDGE_LO:
+        s->intedge = get_writew_val(s->intedge, data, 0);
+        break;
+    case PCH_PIC_INT_EDGE_HI:
+        s->intedge = get_writew_val(s->intedge, data, 1);
+        break;
+    case PCH_PIC_INT_CLEAR_LO:
+        if (s->intedge & data) {
+            s->intirr &= (~data);
+            pch_pic_update_irq(s, data, 0);
+            s->intisr &= (~data);
+        }
+        break;
+    case PCH_PIC_INT_CLEAR_HI:
+        value <<= 32;
+        if (s->intedge & value) {
+            s->intirr &= (~value);
+            pch_pic_update_irq(s, value, 0);
+            s->intisr &= (~value);
+        }
+        break;
+    case PCH_PIC_HTMSI_EN_LO:
+        s->htmsi_en = get_writew_val(s->htmsi_en, data, 0);
+        break;
+    case PCH_PIC_HTMSI_EN_HI:
+        s->htmsi_en = get_writew_val(s->htmsi_en, data, 1);
+        break;
+    case PCH_PIC_AUTO_CTRL0_LO:
+    case PCH_PIC_AUTO_CTRL0_HI:
+    case PCH_PIC_AUTO_CTRL1_LO:
+    case PCH_PIC_AUTO_CTRL1_HI:
+        break;
+    default:
+        break;
+    }
+}
+
+static uint64_t loongarch_pch_pic_high_readw(void *opaque, hwaddr addr,
+                                        unsigned size)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    uint64_t val = 0;
+    uint32_t offset = addr & 0xfff;
+
+    switch (offset) {
+    case STATUS_LO_START:
+        val = (uint32_t)(s->intisr & (~s->int_mask));
+        break;
+    case STATUS_HI_START:
+        val = (s->intisr & (~s->int_mask)) >> 32;
+        break;
+    case POL_LO_START:
+        val = (uint32_t)s->int_polarity;
+        break;
+    case POL_HI_START:
+        val = s->int_polarity >> 32;
+        break;
+    default:
+        break;
+    }
+
+    trace_loongarch_pch_pic_high_readw(size, addr, val);
+    return val;
+}
+
+static void loongarch_pch_pic_high_writew(void *opaque, hwaddr addr,
+                                     uint64_t value, unsigned size)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    uint32_t offset, data = (uint32_t)value;
+    offset = addr & 0xfff;
+
+    trace_loongarch_pch_pic_high_writew(size, addr, data);
+
+    switch (offset) {
+    case STATUS_LO_START:
+        s->intisr = get_writew_val(s->intisr, data, 0);
+        break;
+    case STATUS_HI_START:
+        s->intisr = get_writew_val(s->intisr, data, 1);
+        break;
+    case POL_LO_START:
+        s->int_polarity = get_writew_val(s->int_polarity, data, 0);
+        break;
+    case POL_HI_START:
+        s->int_polarity = get_writew_val(s->int_polarity, data, 1);
+        break;
+    default:
+        break;
+    }
+}
+
+static uint64_t loongarch_pch_pic_readb(void *opaque, hwaddr addr,
+                                        unsigned size)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    uint64_t val = 0;
+    uint32_t offset = (addr & 0xfff) + PCH_PIC_ROUTE_ENTRY_OFFSET;
+    int64_t offset_tmp;
+
+    switch (offset) {
+    case PCH_PIC_HTMSI_VEC_OFFSET ... PCH_PIC_HTMSI_VEC_END:
+        offset_tmp = offset - PCH_PIC_HTMSI_VEC_OFFSET;
+        if (offset_tmp >= 0 && offset_tmp < 64) {
+            val = s->htmsi_vector[offset_tmp];
+        }
+        break;
+    case PCH_PIC_ROUTE_ENTRY_OFFSET ... PCH_PIC_ROUTE_ENTRY_END:
+        offset_tmp = offset - PCH_PIC_ROUTE_ENTRY_OFFSET;
+        if (offset_tmp >= 0 && offset_tmp < 64) {
+            val = s->route_entry[offset_tmp];
+        }
+        break;
+    default:
+        break;
+    }
+
+    trace_loongarch_pch_pic_readb(size, addr, val);
+    return val;
+}
+
+static void loongarch_pch_pic_writeb(void *opaque, hwaddr addr,
+                                     uint64_t data, unsigned size)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque);
+    int32_t offset_tmp;
+    uint32_t offset = (addr & 0xfff) + PCH_PIC_ROUTE_ENTRY_OFFSET;
+
+    trace_loongarch_pch_pic_writeb(size, addr, data);
+
+    switch (offset) {
+    case PCH_PIC_HTMSI_VEC_OFFSET ... PCH_PIC_HTMSI_VEC_END:
+        offset_tmp = offset - PCH_PIC_HTMSI_VEC_OFFSET;
+        if (offset_tmp >= 0 && offset_tmp < 64) {
+            s->htmsi_vector[offset_tmp] = (uint8_t)(data & 0xff);
+        }
+        break;
+    case PCH_PIC_ROUTE_ENTRY_OFFSET ... PCH_PIC_ROUTE_ENTRY_END:
+        offset_tmp = offset - PCH_PIC_ROUTE_ENTRY_OFFSET;
+        if (offset_tmp >= 0 && offset_tmp < 64) {
+            s->route_entry[offset_tmp] = (uint8_t)(data & 0xff);
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+static const MemoryRegionOps loongarch_pch_pic_reg32_low_ops = {
+    .read = loongarch_pch_pic_low_readw,
+    .write = loongarch_pch_pic_low_writew,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 8,
+    },
+    .impl = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static const MemoryRegionOps loongarch_pch_pic_reg32_high_ops = {
+    .read = loongarch_pch_pic_high_readw,
+    .write = loongarch_pch_pic_high_writew,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 8,
+    },
+    .impl = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static const MemoryRegionOps loongarch_pch_pic_reg8_ops = {
+    .read = loongarch_pch_pic_readb,
+    .write = loongarch_pch_pic_writeb,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 1,
+    },
+    .impl = {
+        .min_access_size = 1,
+        .max_access_size = 1,
+    },
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void loongarch_pch_pic_reset(DeviceState *d)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(d);
+    int i;
+
+    s->int_mask = -1;
+    s->htmsi_en = 0x0;
+    s->intedge  = 0x0;
+    s->intclr   = 0x0;
+    s->auto_crtl0 = 0x0;
+    s->auto_crtl1 = 0x0;
+    for (i = 0; i < 64; i++) {
+        s->route_entry[i] = 0x1;
+        s->htmsi_vector[i] = 0x0;
+    }
+    s->intirr = 0x0;
+    s->intisr = 0x0;
+    s->last_intirr = 0x0;
+    s->int_polarity = 0x0;
+}
+
+static void loongarch_pch_pic_init(Object *obj)
+{
+    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(obj);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+
+    memory_region_init_io(&s->iomem32_low, obj,
+                          &loongarch_pch_pic_reg32_low_ops,
+                          s, PCH_PIC_NAME(.reg32_part1), 0x100);
+    memory_region_init_io(&s->iomem8, obj, &loongarch_pch_pic_reg8_ops,
+                          s, PCH_PIC_NAME(.reg8), 0x2a0);
+    memory_region_init_io(&s->iomem32_high, obj,
+                          &loongarch_pch_pic_reg32_high_ops,
+                          s, PCH_PIC_NAME(.reg32_part2), 0xc60);
+    sysbus_init_mmio(sbd, &s->iomem32_low);
+    sysbus_init_mmio(sbd, &s->iomem8);
+    sysbus_init_mmio(sbd, &s->iomem32_high);
+
+    qdev_init_gpio_out(DEVICE(obj), s->parent_irq, PCH_PIC_IRQ_NUM);
+    qdev_init_gpio_in(DEVICE(obj), pch_pic_irq_handler, PCH_PIC_IRQ_NUM);
+}
+
+static const VMStateDescription vmstate_loongarch_pch_pic = {
+    .name = TYPE_LOONGARCH_PCH_PIC,
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT64(int_mask, LoongArchPCHPIC),
+        VMSTATE_UINT64(htmsi_en, LoongArchPCHPIC),
+        VMSTATE_UINT64(intedge, LoongArchPCHPIC),
+        VMSTATE_UINT64(intclr, LoongArchPCHPIC),
+        VMSTATE_UINT64(auto_crtl0, LoongArchPCHPIC),
+        VMSTATE_UINT64(auto_crtl1, LoongArchPCHPIC),
+        VMSTATE_UINT8_ARRAY(route_entry, LoongArchPCHPIC, 64),
+        VMSTATE_UINT8_ARRAY(htmsi_vector, LoongArchPCHPIC, 64),
+        VMSTATE_UINT64(last_intirr, LoongArchPCHPIC),
+        VMSTATE_UINT64(intirr, LoongArchPCHPIC),
+        VMSTATE_UINT64(intisr, LoongArchPCHPIC),
+        VMSTATE_UINT64(int_polarity, LoongArchPCHPIC),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void loongarch_pch_pic_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->reset = loongarch_pch_pic_reset;
+    dc->vmsd = &vmstate_loongarch_pch_pic;
+}
+
+static const TypeInfo loongarch_pch_pic_info = {
+    .name          = TYPE_LOONGARCH_PCH_PIC,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(LoongArchPCHPIC),
+    .instance_init = loongarch_pch_pic_init,
+    .class_init    = loongarch_pch_pic_class_init,
+};
+
+static void loongarch_pch_pic_register_types(void)
+{
+    type_register_static(&loongarch_pch_pic_info);
+}
+
+type_init(loongarch_pch_pic_register_types)
diff --git a/hw/intc/meson.build b/hw/intc/meson.build
index 8b35139..bcbf22f 100644
--- a/hw/intc/meson.build
+++ b/hw/intc/meson.build
@@ -63,3 +63,7 @@ specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_XIVE'],
 specific_ss.add(when: 'CONFIG_GOLDFISH_PIC', if_true: files('goldfish_pic.c'))
 specific_ss.add(when: 'CONFIG_M68K_IRQC', if_true: files('m68k_irqc.c'))
 specific_ss.add(when: 'CONFIG_NIOS2_VIC', if_true: files('nios2_vic.c'))
+specific_ss.add(when: 'CONFIG_LOONGARCH_IPI', if_true: files('loongarch_ipi.c'))
+specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c'))
+specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c'))
+specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c'))
diff --git a/hw/intc/trace-events b/hw/intc/trace-events
index 5271590..0a90c1c 100644
--- a/hw/intc/trace-events
+++ b/hw/intc/trace-events
@@ -287,3 +287,25 @@ sh_intc_register(const char *s, int id, unsigned short v, int c, int m) "%s %u -
 sh_intc_read(unsigned size, uint64_t offset, unsigned long val) "size %u 0x%" PRIx64 " -> 0x%lx"
 sh_intc_write(unsigned size, uint64_t offset, unsigned long val) "size %u 0x%" PRIx64 " <- 0x%lx"
 sh_intc_set(int id, int enable) "setting interrupt group %d to %d"
+
+# loongarch_ipi.c
+loongarch_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
+loongarch_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
+
+# loongarch_pch_pic.c
+loongarch_pch_pic_irq_handler(int irq, int level) "irq %d level %d"
+loongarch_pch_pic_low_readw(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
+loongarch_pch_pic_low_writew(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
+loongarch_pch_pic_high_readw(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
+loongarch_pch_pic_high_writew(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
+loongarch_pch_pic_readb(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
+loongarch_pch_pic_writeb(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
+
+# loongarch_pch_msi.c
+loongarch_msi_set_irq(int irq_num) "set msi irq %d"
+
+# loongarch_extioi.c
+loongarch_extioi_setirq(int irq, int level) "set extirq irq %d level %d"
+loongarch_extioi_readw(uint64_t addr, uint32_t val) "addr: 0x%"PRIx64 "val: 0x%x"
+loongarch_extioi_writew(uint64_t addr, uint64_t val) "addr: 0x%"PRIx64 "val: 0x%" PRIx64
+
diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig
new file mode 100644
index 0000000..35b6680
--- /dev/null
+++ b/hw/loongarch/Kconfig
@@ -0,0 +1,16 @@
+config LOONGARCH_VIRT
+    bool
+    select PCI
+    select PCI_EXPRESS_GENERIC_BRIDGE
+    imply VGA_PCI
+    imply VIRTIO_VGA
+    imply PCI_DEVICES
+    select ISA_BUS
+    select SERIAL
+    select SERIAL_ISA
+    select VIRTIO_PCI
+    select LOONGARCH_IPI
+    select LOONGARCH_PCH_PIC
+    select LOONGARCH_PCH_MSI
+    select LOONGARCH_EXTIOI
+    select LS7A_RTC
diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c
new file mode 100644
index 0000000..bd20ebb
--- /dev/null
+++ b/hw/loongarch/loongson3.c
@@ -0,0 +1,382 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU loongson 3a5000 develop board emulation
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "qemu/datadir.h"
+#include "qapi/error.h"
+#include "hw/boards.h"
+#include "hw/char/serial.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/qtest.h"
+#include "sysemu/runstate.h"
+#include "sysemu/reset.h"
+#include "sysemu/rtc.h"
+#include "hw/loongarch/virt.h"
+#include "exec/address-spaces.h"
+#include "hw/irq.h"
+#include "net/net.h"
+#include "hw/loader.h"
+#include "elf.h"
+#include "hw/intc/loongarch_ipi.h"
+#include "hw/intc/loongarch_extioi.h"
+#include "hw/intc/loongarch_pch_pic.h"
+#include "hw/intc/loongarch_pch_msi.h"
+#include "hw/pci-host/ls7a.h"
+#include "hw/pci-host/gpex.h"
+#include "hw/misc/unimp.h"
+
+#include "target/loongarch/cpu.h"
+
+#define PM_BASE 0x10080000
+#define PM_SIZE 0x100
+#define PM_CTRL 0x10
+
+/*
+ * This is a placeholder for missing ACPI,
+ * and will eventually be replaced.
+ */
+static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size)
+{
+    return 0;
+}
+
+static void loongarch_virt_pm_write(void *opaque, hwaddr addr,
+                               uint64_t val, unsigned size)
+{
+    if (addr != PM_CTRL) {
+        return;
+    }
+
+    switch (val) {
+    case 0x00:
+        qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+        return;
+    case 0xff:
+        qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+        return;
+    default:
+        return;
+    }
+}
+
+static const MemoryRegionOps loongarch_virt_pm_ops = {
+    .read  = loongarch_virt_pm_read,
+    .write = loongarch_virt_pm_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 1
+    }
+};
+
+static struct _loaderparams {
+    uint64_t ram_size;
+    const char *kernel_filename;
+} loaderparams;
+
+static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
+{
+    return addr & 0x1fffffffll;
+}
+
+static int64_t load_kernel_info(void)
+{
+    uint64_t kernel_entry, kernel_low, kernel_high;
+    ssize_t kernel_size;
+
+    kernel_size = load_elf(loaderparams.kernel_filename, NULL,
+                           cpu_loongarch_virt_to_phys, NULL,
+                           &kernel_entry, &kernel_low,
+                           &kernel_high, NULL, 0,
+                           EM_LOONGARCH, 1, 0);
+
+    if (kernel_size < 0) {
+        error_report("could not load kernel '%s': %s",
+                     loaderparams.kernel_filename,
+                     load_elf_strerror(kernel_size));
+        exit(1);
+    }
+    return kernel_entry;
+}
+
+static void loongarch_devices_init(DeviceState *pch_pic)
+{
+    DeviceState *gpex_dev;
+    SysBusDevice *d;
+    PCIBus *pci_bus;
+    MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg;
+    MemoryRegion *mmio_alias, *mmio_reg, *pm_mem;
+    int i;
+
+    gpex_dev = qdev_new(TYPE_GPEX_HOST);
+    d = SYS_BUS_DEVICE(gpex_dev);
+    sysbus_realize_and_unref(d, &error_fatal);
+    pci_bus = PCI_HOST_BRIDGE(gpex_dev)->bus;
+
+    /* Map only part size_ecam bytes of ECAM space */
+    ecam_alias = g_new0(MemoryRegion, 1);
+    ecam_reg = sysbus_mmio_get_region(d, 0);
+    memory_region_init_alias(ecam_alias, OBJECT(gpex_dev), "pcie-ecam",
+                             ecam_reg, 0, LS_PCIECFG_SIZE);
+    memory_region_add_subregion(get_system_memory(), LS_PCIECFG_BASE,
+                                ecam_alias);
+
+    /* Map PCI mem space */
+    mmio_alias = g_new0(MemoryRegion, 1);
+    mmio_reg = sysbus_mmio_get_region(d, 1);
+    memory_region_init_alias(mmio_alias, OBJECT(gpex_dev), "pcie-mmio",
+                             mmio_reg, LS7A_PCI_MEM_BASE, LS7A_PCI_MEM_SIZE);
+    memory_region_add_subregion(get_system_memory(), LS7A_PCI_MEM_BASE,
+                                mmio_alias);
+
+    /* Map PCI IO port space. */
+    pio_alias = g_new0(MemoryRegion, 1);
+    pio_reg = sysbus_mmio_get_region(d, 2);
+    memory_region_init_alias(pio_alias, OBJECT(gpex_dev), "pcie-io", pio_reg,
+                             LS7A_PCI_IO_OFFSET, LS7A_PCI_IO_SIZE);
+    memory_region_add_subregion(get_system_memory(), LS7A_PCI_IO_BASE,
+                                pio_alias);
+
+    for (i = 0; i < GPEX_NUM_IRQS; i++) {
+        sysbus_connect_irq(d, i,
+                           qdev_get_gpio_in(pch_pic, 16 + i));
+        gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i);
+    }
+
+    serial_mm_init(get_system_memory(), LS7A_UART_BASE, 0,
+                   qdev_get_gpio_in(pch_pic,
+                                    LS7A_UART_IRQ - PCH_PIC_IRQ_OFFSET),
+                   115200, serial_hd(0), DEVICE_LITTLE_ENDIAN);
+
+    /* Network init */
+    for (i = 0; i < nb_nics; i++) {
+        NICInfo *nd = &nd_table[i];
+
+        if (!nd->model) {
+            nd->model = g_strdup("virtio");
+        }
+
+        pci_nic_init_nofail(nd, pci_bus, nd->model, NULL);
+    }
+
+    /* VGA setup */
+    pci_vga_init(pci_bus);
+
+    /*
+     * There are some invalid guest memory access.
+     * Create some unimplemented devices to emulate this.
+     */
+    create_unimplemented_device("pci-dma-cfg", 0x1001041c, 0x4);
+    sysbus_create_simple("ls7a_rtc", LS7A_RTC_REG_BASE,
+                         qdev_get_gpio_in(pch_pic,
+                         LS7A_RTC_IRQ - PCH_PIC_IRQ_OFFSET));
+
+    pm_mem = g_new(MemoryRegion, 1);
+    memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops,
+                          NULL, "loongarch_virt_pm", PM_SIZE);
+    memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem);
+}
+
+static void loongarch_irq_init(LoongArchMachineState *lams)
+{
+    MachineState *ms = MACHINE(lams);
+    DeviceState *pch_pic, *pch_msi, *cpudev;
+    DeviceState *ipi, *extioi;
+    SysBusDevice *d;
+    LoongArchCPU *lacpu;
+    CPULoongArchState *env;
+    CPUState *cpu_state;
+    int cpu, pin, i;
+
+    ipi = qdev_new(TYPE_LOONGARCH_IPI);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
+
+    extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
+
+    /*
+     * The connection of interrupts:
+     *   +-----+    +---------+     +-------+
+     *   | IPI |--> | CPUINTC | <-- | Timer |
+     *   +-----+    +---------+     +-------+
+     *                  ^
+     *                  |
+     *            +---------+
+     *            | EIOINTC |
+     *            +---------+
+     *             ^       ^
+     *             |       |
+     *      +---------+ +---------+
+     *      | PCH-PIC | | PCH-MSI |
+     *      +---------+ +---------+
+     *        ^      ^          ^
+     *        |      |          |
+     * +--------+ +---------+ +---------+
+     * | UARTs  | | Devices | | Devices |
+     * +--------+ +---------+ +---------+
+     */
+    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
+        cpu_state = qemu_get_cpu(cpu);
+        cpudev = DEVICE(cpu_state);
+        lacpu = LOONGARCH_CPU(cpu_state);
+        env = &(lacpu->env);
+
+        /* connect ipi irq to cpu irq */
+        qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI));
+        /* IPI iocsr memory region */
+        memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX,
+                                    sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
+                                    cpu));
+        /* extioi iocsr memory region */
+        memory_region_add_subregion(&env->system_iocsr, APIC_BASE,
+                                sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi),
+                                cpu));
+    }
+
+    /*
+     * connect ext irq to the cpu irq
+     * cpu_pin[9:2] <= intc_pin[7:0]
+     */
+    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
+        cpudev = DEVICE(qemu_get_cpu(cpu));
+        for (pin = 0; pin < LS3A_INTC_IP; pin++) {
+            qdev_connect_gpio_out(extioi, (cpu * 8 + pin),
+                                  qdev_get_gpio_in(cpudev, pin + 2));
+        }
+    }
+
+    pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC);
+    d = SYS_BUS_DEVICE(pch_pic);
+    sysbus_realize_and_unref(d, &error_fatal);
+    memory_region_add_subregion(get_system_memory(), LS7A_IOAPIC_REG_BASE,
+                            sysbus_mmio_get_region(d, 0));
+    memory_region_add_subregion(get_system_memory(),
+                            LS7A_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET,
+                            sysbus_mmio_get_region(d, 1));
+    memory_region_add_subregion(get_system_memory(),
+                            LS7A_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO,
+                            sysbus_mmio_get_region(d, 2));
+
+    /* Connect 64 pch_pic irqs to extioi */
+    for (int i = 0; i < PCH_PIC_IRQ_NUM; i++) {
+        qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i));
+    }
+
+    pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI);
+    d = SYS_BUS_DEVICE(pch_msi);
+    sysbus_realize_and_unref(d, &error_fatal);
+    sysbus_mmio_map(d, 0, LS7A_PCH_MSI_ADDR_LOW);
+    for (i = 0; i < PCH_MSI_IRQ_NUM; i++) {
+        /* Connect 192 pch_msi irqs to extioi */
+        qdev_connect_gpio_out(DEVICE(d), i,
+                              qdev_get_gpio_in(extioi, i + PCH_MSI_IRQ_START));
+    }
+
+    loongarch_devices_init(pch_pic);
+}
+
+static void reset_load_elf(void *opaque)
+{
+    LoongArchCPU *cpu = opaque;
+    CPULoongArchState *env = &cpu->env;
+
+    cpu_reset(CPU(cpu));
+    if (env->load_elf) {
+        cpu_set_pc(CPU(cpu), env->elf_address);
+    }
+}
+
+static void loongarch_init(MachineState *machine)
+{
+    const char *cpu_model = machine->cpu_type;
+    const char *kernel_filename = machine->kernel_filename;
+    ram_addr_t offset = 0;
+    ram_addr_t ram_size = machine->ram_size;
+    uint64_t highram_size = 0;
+    MemoryRegion *address_space_mem = get_system_memory();
+    LoongArchMachineState *lams = LOONGARCH_MACHINE(machine);
+    LoongArchCPU *lacpu;
+    int i;
+    int64_t kernel_addr = 0;
+
+    if (!cpu_model) {
+        cpu_model = LOONGARCH_CPU_TYPE_NAME("la464");
+    }
+
+    if (!strstr(cpu_model, "la464")) {
+        error_report("LoongArch/TCG needs cpu type la464");
+        exit(1);
+    }
+
+    if (ram_size < 1 * GiB) {
+        error_report("ram_size must be greater than 1G.");
+        exit(1);
+    }
+
+    /* Init CPUs */
+    for (i = 0; i < machine->smp.cpus; i++) {
+        cpu_create(machine->cpu_type);
+    }
+
+    /* Add memory region */
+    memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram",
+                             machine->ram, 0, 256 * MiB);
+    memory_region_add_subregion(address_space_mem, offset, &lams->lowmem);
+    offset += 256 * MiB;
+    highram_size = ram_size - 256 * MiB;
+    memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem",
+                             machine->ram, offset, highram_size);
+    memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem);
+    /* Add isa io region */
+    memory_region_init_alias(&lams->isa_io, NULL, "isa-io",
+                             get_system_io(), 0, LOONGARCH_ISA_IO_SIZE);
+    memory_region_add_subregion(address_space_mem, LOONGARCH_ISA_IO_BASE,
+                                &lams->isa_io);
+    if (kernel_filename) {
+        loaderparams.ram_size = ram_size;
+        loaderparams.kernel_filename = kernel_filename;
+        kernel_addr = load_kernel_info();
+        if (!machine->firmware) {
+            for (i = 0; i < machine->smp.cpus; i++) {
+                lacpu = LOONGARCH_CPU(qemu_get_cpu(i));
+                lacpu->env.load_elf = true;
+                lacpu->env.elf_address = kernel_addr;
+                qemu_register_reset(reset_load_elf, lacpu);
+            }
+        }
+    }
+    /* Initialize the IO interrupt subsystem */
+    loongarch_irq_init(lams);
+}
+
+static void loongarch_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+
+    mc->desc = "Loongson-3A5000 LS7A1000 machine";
+    mc->init = loongarch_init;
+    mc->default_ram_size = 1 * GiB;
+    mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464");
+    mc->default_ram_id = "loongarch.ram";
+    mc->max_cpus = LOONGARCH_MAX_VCPUS;
+    mc->is_default = 1;
+    mc->default_kernel_irqchip_split = false;
+    mc->block_default_type = IF_VIRTIO;
+    mc->default_boot_order = "c";
+    mc->no_cdrom = 1;
+}
+
+static const TypeInfo loongarch_machine_types[] = {
+    {
+        .name           = TYPE_LOONGARCH_MACHINE,
+        .parent         = TYPE_MACHINE,
+        .instance_size  = sizeof(LoongArchMachineState),
+        .class_init     = loongarch_class_init,
+    }
+};
+
+DEFINE_TYPES(loongarch_machine_types)
diff --git a/hw/loongarch/meson.build b/hw/loongarch/meson.build
new file mode 100644
index 0000000..cecb1a5
--- /dev/null
+++ b/hw/loongarch/meson.build
@@ -0,0 +1,4 @@
+loongarch_ss = ss.source_set()
+loongarch_ss.add(when: 'CONFIG_LOONGARCH_VIRT', if_true: files('loongson3.c'))
+
+hw_arch += {'loongarch': loongarch_ss}
diff --git a/hw/meson.build b/hw/meson.build
index 9992c51..c7ac7d3 100644
--- a/hw/meson.build
+++ b/hw/meson.build
@@ -50,6 +50,7 @@ subdir('avr')
 subdir('cris')
 subdir('hppa')
 subdir('i386')
+subdir('loongarch')
 subdir('m68k')
 subdir('microblaze')
 subdir('mips')
diff --git a/hw/rtc/Kconfig b/hw/rtc/Kconfig
index 730c272..d0d8dda 100644
--- a/hw/rtc/Kconfig
+++ b/hw/rtc/Kconfig
@@ -27,3 +27,6 @@ config SUN4V_RTC
 
 config GOLDFISH_RTC
     bool
+
+config LS7A_RTC
+    bool
diff --git a/hw/rtc/ls7a_rtc.c b/hw/rtc/ls7a_rtc.c
new file mode 100644
index 0000000..fe67103
--- /dev/null
+++ b/hw/rtc/ls7a_rtc.c
@@ -0,0 +1,528 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Loongarch LS7A Real Time Clock emulation
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "hw/irq.h"
+#include "include/hw/register.h"
+#include "qemu/timer.h"
+#include "sysemu/sysemu.h"
+#include "qemu/cutils.h"
+#include "qemu/log.h"
+#include "migration/vmstate.h"
+#include "hw/misc/unimp.h"
+#include "sysemu/rtc.h"
+#include "hw/registerfields.h"
+
+#define SYS_TOYTRIM        0x20
+#define SYS_TOYWRITE0      0x24
+#define SYS_TOYWRITE1      0x28
+#define SYS_TOYREAD0       0x2C
+#define SYS_TOYREAD1       0x30
+#define SYS_TOYMATCH0      0x34
+#define SYS_TOYMATCH1      0x38
+#define SYS_TOYMATCH2      0x3C
+#define SYS_RTCCTRL        0x40
+#define SYS_RTCTRIM        0x60
+#define SYS_RTCWRTIE0      0x64
+#define SYS_RTCREAD0       0x68
+#define SYS_RTCMATCH0      0x6C
+#define SYS_RTCMATCH1      0x70
+#define SYS_RTCMATCH2      0x74
+
+#define LS7A_RTC_FREQ     32768
+#define TIMER_NUMS        3
+/*
+ * Shift bits and filed mask
+ */
+
+FIELD(TOY, MON, 26, 6)
+FIELD(TOY, DAY, 21, 5)
+FIELD(TOY, HOUR, 16, 5)
+FIELD(TOY, MIN, 10, 6)
+FIELD(TOY, SEC, 4, 6)
+FIELD(TOY, MSEC, 0, 4)
+
+FIELD(TOY_MATCH, YEAR, 26, 6)
+FIELD(TOY_MATCH, MON, 22, 4)
+FIELD(TOY_MATCH, DAY, 17, 5)
+FIELD(TOY_MATCH, HOUR, 12, 5)
+FIELD(TOY_MATCH, MIN, 6, 6)
+FIELD(TOY_MATCH, SEC, 0, 6)
+
+FIELD(RTC_CTRL, RTCEN, 13, 1)
+FIELD(RTC_CTRL, TOYEN, 11, 1)
+FIELD(RTC_CTRL, EO, 8, 1)
+
+#define TYPE_LS7A_RTC "ls7a_rtc"
+OBJECT_DECLARE_SIMPLE_TYPE(LS7ARtcState, LS7A_RTC)
+
+struct LS7ARtcState {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+    /*
+     * Needed to preserve the tick_count across migration, even if the
+     * absolute value of the rtc_clock is different on the source and
+     * destination.
+     */
+    int64_t offset_toy;
+    int64_t offset_rtc;
+    uint64_t save_toy_mon;
+    uint64_t save_toy_year;
+    uint64_t save_rtc;
+    int64_t data;
+    int tidx;
+    uint32_t toymatch[3];
+    uint32_t toytrim;
+    uint32_t cntrctl;
+    uint32_t rtctrim;
+    uint32_t rtccount;
+    uint32_t rtcmatch[3];
+    QEMUTimer *toy_timer[TIMER_NUMS];
+    QEMUTimer *rtc_timer[TIMER_NUMS];
+    qemu_irq irq;
+};
+
+/* switch nanoseconds time to rtc ticks */
+static inline uint64_t ls7a_rtc_ticks(void)
+{
+    return qemu_clock_get_ns(rtc_clock) * LS7A_RTC_FREQ / NANOSECONDS_PER_SECOND;
+}
+
+/* switch rtc ticks to nanoseconds */
+static inline uint64_t ticks_to_ns(uint64_t ticks)
+{
+    return ticks * NANOSECONDS_PER_SECOND / LS7A_RTC_FREQ;
+}
+
+static inline bool toy_enabled(LS7ARtcState *s)
+{
+    return FIELD_EX32(s->cntrctl, RTC_CTRL, TOYEN) &&
+           FIELD_EX32(s->cntrctl, RTC_CTRL, EO);
+}
+
+static inline bool rtc_enabled(LS7ARtcState *s)
+{
+    return FIELD_EX32(s->cntrctl, RTC_CTRL, RTCEN) &&
+           FIELD_EX32(s->cntrctl, RTC_CTRL, EO);
+}
+
+/* parse toy value to struct tm */
+static inline void toy_val_to_time_mon(uint64_t toy_val, struct tm *tm)
+{
+    tm->tm_sec = FIELD_EX32(toy_val, TOY, SEC);
+    tm->tm_min = FIELD_EX32(toy_val, TOY, MIN);
+    tm->tm_hour = FIELD_EX32(toy_val, TOY, HOUR);
+    tm->tm_mday = FIELD_EX32(toy_val, TOY, DAY);
+    tm->tm_mon = FIELD_EX32(toy_val, TOY, MON) - 1;
+}
+
+static inline void toy_val_to_time_year(uint64_t toy_year, struct tm *tm)
+{
+    tm->tm_year = toy_year;
+}
+
+/* parse struct tm to toy value */
+static inline uint64_t toy_time_to_val_mon(struct tm tm)
+{
+    uint64_t val = 0;
+
+    val = FIELD_DP32(val, TOY, MON, tm.tm_mon + 1);
+    val = FIELD_DP32(val, TOY, DAY, tm.tm_mday);
+    val = FIELD_DP32(val, TOY, HOUR, tm.tm_hour);
+    val = FIELD_DP32(val, TOY, MIN, tm.tm_min);
+    val = FIELD_DP32(val, TOY, SEC, tm.tm_sec);
+    return val;
+}
+
+static inline uint64_t toy_time_to_val_year(struct tm tm)
+{
+    uint64_t year;
+
+    year = tm.tm_year;
+    return year;
+}
+
+static inline void toymatch_val_to_time(uint64_t val, struct tm *tm)
+{
+    tm->tm_sec = FIELD_EX32(val, TOY_MATCH, SEC);
+    tm->tm_min = FIELD_EX32(val, TOY_MATCH, MIN);
+    tm->tm_hour = FIELD_EX32(val, TOY_MATCH, HOUR);
+    tm->tm_mday = FIELD_EX32(val, TOY_MATCH, DAY);
+    tm->tm_mon = FIELD_EX32(val, TOY_MATCH, MON) - 1;
+    tm->tm_year += (FIELD_EX32(val, TOY_MATCH, YEAR) - (tm->tm_year & 0x3f));
+}
+
+static void toymatch_write(LS7ARtcState *s, struct tm *tm, uint64_t val, int num)
+{
+    int64_t now, expire_time;
+
+    /* it do not support write when toy disabled */
+    if (toy_enabled(s)) {
+        s->toymatch[num] = val;
+        /* caculate expire time */
+        now = qemu_clock_get_ms(rtc_clock);
+        toymatch_val_to_time(val, tm);
+        expire_time = now + (qemu_timedate_diff(tm) - s->offset_toy) * 1000;
+        timer_mod(s->toy_timer[num], expire_time);
+    }
+}
+
+static void rtcmatch_write(LS7ARtcState *s, uint64_t val, int num)
+{
+    uint64_t expire_ns;
+
+    /* it do not support write when toy disabled */
+    if (rtc_enabled(s)) {
+        s->rtcmatch[num] = val;
+        /* caculate expire time */
+        expire_ns = ticks_to_ns(val) - ticks_to_ns(s->offset_rtc);
+        timer_mod_ns(s->rtc_timer[num], expire_ns);
+    }
+}
+
+static void ls7a_toy_stop(LS7ARtcState *s)
+{
+    int i;
+    struct tm tm;
+    /*
+     * save time when disabled toy,
+     * because toy time not add counters.
+     */
+    qemu_get_timedate(&tm, s->offset_toy);
+    s->save_toy_mon = toy_time_to_val_mon(tm);
+    s->save_toy_year = toy_time_to_val_year(tm);
+
+    /* delete timers, and when re-enabled, recaculate expire time */
+    for (i = 0; i < TIMER_NUMS; i++) {
+        timer_del(s->toy_timer[i]);
+    }
+}
+
+static void ls7a_rtc_stop(LS7ARtcState *s)
+{
+    int i;
+    uint64_t time;
+
+    /* save rtc time */
+    time = ls7a_rtc_ticks() + s->offset_rtc;
+    s->save_rtc = time;
+
+    /* delete timers, and when re-enabled, recaculate expire time */
+    for (i = 0; i < TIMER_NUMS; i++) {
+        timer_del(s->rtc_timer[i]);
+    }
+}
+
+static void ls7a_toy_start(LS7ARtcState *s)
+{
+    int i;
+    uint64_t expire_time, now;
+    struct tm tm;
+    /*
+     * need to recaculate toy offset
+     * and expire time when enable it.
+     */
+    toy_val_to_time_mon(s->save_toy_mon, &tm);
+    toy_val_to_time_year(s->save_toy_year, &tm);
+
+    s->offset_toy = qemu_timedate_diff(&tm);
+    now = qemu_clock_get_ms(rtc_clock);
+
+    /* recaculate expire time and enable timer */
+    for (i = 0; i < TIMER_NUMS; i++) {
+        toymatch_val_to_time(s->toymatch[i], &tm);
+        expire_time = now + (qemu_timedate_diff(&tm) - s->offset_toy) * 1000;
+        timer_mod(s->toy_timer[i], expire_time);
+    }
+}
+
+static void ls7a_rtc_start(LS7ARtcState *s)
+{
+    int i;
+    uint64_t expire_time, now;
+
+    /*
+     * need to recaculate rtc offset
+     * and expire time when enable it.
+     */
+    now = ls7a_rtc_ticks();
+    s->offset_rtc = s->save_rtc - now;
+
+    /* recaculate expire time and enable timer */
+    for (i = 0; i < TIMER_NUMS; i++) {
+        expire_time = ticks_to_ns(s->rtcmatch[i]) - ticks_to_ns(s->offset_rtc);
+        timer_mod_ns(s->rtc_timer[i], expire_time);
+    }
+}
+
+static uint64_t ls7a_rtc_read(void *opaque, hwaddr addr, unsigned size)
+{
+    LS7ARtcState *s = LS7A_RTC(opaque);
+    struct tm tm;
+    int val = 0;
+
+    switch (addr) {
+    case SYS_TOYREAD0:
+        /* if toy disabled, read save toy time */
+        if (toy_enabled(s)) {
+            qemu_get_timedate(&tm, s->offset_toy);
+            val = toy_time_to_val_mon(tm);
+        } else {
+            /* read save mon val */
+            val = s->save_toy_mon;
+        }
+        break;
+    case SYS_TOYREAD1:
+        /* if toy disabled, read save toy time */
+        if (toy_enabled(s)) {
+            qemu_get_timedate(&tm, s->offset_toy);
+            val = tm.tm_year;
+        } else {
+            /* read save year val */
+            val = s->save_toy_year;
+        }
+        break;
+    case SYS_TOYMATCH0:
+        val = s->toymatch[0];
+        break;
+    case SYS_TOYMATCH1:
+        val = s->toymatch[1];
+        break;
+    case SYS_TOYMATCH2:
+        val = s->toymatch[2];
+        break;
+    case SYS_RTCCTRL:
+        val = s->cntrctl;
+        break;
+    case SYS_RTCREAD0:
+        /* if rtc disabled, read save rtc time */
+        if (rtc_enabled(s)) {
+            val = ls7a_rtc_ticks() + s->offset_rtc;
+        } else {
+            val = s->save_rtc;
+        }
+        break;
+    case SYS_RTCMATCH0:
+        val = s->rtcmatch[0];
+        break;
+    case SYS_RTCMATCH1:
+        val = s->rtcmatch[1];
+        break;
+    case SYS_RTCMATCH2:
+        val = s->rtcmatch[2];
+        break;
+    default:
+        val = 0;
+        break;
+    }
+    return val;
+}
+
+static void ls7a_rtc_write(void *opaque, hwaddr addr,
+                           uint64_t val, unsigned size)
+{
+    int old_toyen, old_rtcen, new_toyen, new_rtcen;
+    LS7ARtcState *s = LS7A_RTC(opaque);
+    struct tm tm;
+
+    switch (addr) {
+    case SYS_TOYWRITE0:
+        /* it do not support write when toy disabled */
+        if (toy_enabled(s)) {
+            qemu_get_timedate(&tm, s->offset_toy);
+            tm.tm_sec = FIELD_EX32(val, TOY, SEC);
+            tm.tm_min = FIELD_EX32(val, TOY, MIN);
+            tm.tm_hour = FIELD_EX32(val, TOY, HOUR);
+            tm.tm_mday = FIELD_EX32(val, TOY, DAY);
+            tm.tm_mon = FIELD_EX32(val, TOY, MON) - 1;
+            s->offset_toy = qemu_timedate_diff(&tm);
+        }
+    break;
+    case SYS_TOYWRITE1:
+        if (toy_enabled(s)) {
+            qemu_get_timedate(&tm, s->offset_toy);
+            tm.tm_year = val;
+            s->offset_toy = qemu_timedate_diff(&tm);
+        }
+        break;
+    case SYS_TOYMATCH0:
+        toymatch_write(s, &tm, val, 0);
+        break;
+    case SYS_TOYMATCH1:
+        toymatch_write(s, &tm, val, 1);
+        break;
+    case SYS_TOYMATCH2:
+        toymatch_write(s, &tm, val, 2);
+        break;
+    case SYS_RTCCTRL:
+        /* get old ctrl */
+        old_toyen = toy_enabled(s);
+        old_rtcen = rtc_enabled(s);
+
+        s->cntrctl = val;
+        /* get new ctrl */
+        new_toyen = toy_enabled(s);
+        new_rtcen = rtc_enabled(s);
+
+        /*
+         * we do not consider if EO changed, as it always set at most time.
+         * toy or rtc enabled should start timer. otherwise, stop timer
+         */
+        if (old_toyen != new_toyen) {
+            if (new_toyen) {
+                ls7a_toy_start(s);
+            } else {
+                ls7a_toy_stop(s);
+            }
+        }
+        if (old_rtcen != new_rtcen) {
+            if (new_rtcen) {
+                ls7a_rtc_start(s);
+            } else {
+                ls7a_rtc_stop(s);
+            }
+        }
+        break;
+    case SYS_RTCWRTIE0:
+        if (rtc_enabled(s)) {
+            s->offset_rtc = val - ls7a_rtc_ticks();
+        }
+        break;
+    case SYS_RTCMATCH0:
+        rtcmatch_write(s, val, 0);
+        break;
+    case SYS_RTCMATCH1:
+        rtcmatch_write(s, val, 1);
+        break;
+    case SYS_RTCMATCH2:
+        rtcmatch_write(s, val, 2);
+        break;
+    default:
+        break;
+    }
+}
+
+static const MemoryRegionOps ls7a_rtc_ops = {
+    .read = ls7a_rtc_read,
+    .write = ls7a_rtc_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+};
+
+static void toy_timer_cb(void *opaque)
+{
+    LS7ARtcState *s = opaque;
+
+    if (toy_enabled(s)) {
+        qemu_irq_pulse(s->irq);
+    }
+}
+
+static void rtc_timer_cb(void *opaque)
+{
+    LS7ARtcState *s = opaque;
+
+    if (rtc_enabled(s)) {
+        qemu_irq_pulse(s->irq);
+    }
+}
+
+static void ls7a_rtc_realize(DeviceState *dev, Error **errp)
+{
+    int i;
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    LS7ARtcState *d = LS7A_RTC(sbd);
+    memory_region_init_io(&d->iomem, NULL, &ls7a_rtc_ops,
+                         (void *)d, "ls7a_rtc", 0x100);
+
+    sysbus_init_irq(sbd, &d->irq);
+
+    sysbus_init_mmio(sbd, &d->iomem);
+    for (i = 0; i < TIMER_NUMS; i++) {
+        d->toymatch[i] = 0;
+        d->rtcmatch[i] = 0;
+        d->toy_timer[i] = timer_new_ms(rtc_clock, toy_timer_cb, d);
+        d->rtc_timer[i] = timer_new_ms(rtc_clock, rtc_timer_cb, d);
+    }
+    d->offset_toy = 0;
+    d->offset_rtc = 0;
+    d->save_toy_mon = 0;
+    d->save_toy_year = 0;
+    d->save_rtc = 0;
+
+    create_unimplemented_device("mmio fallback 1", 0x10013ffc, 0x4);
+}
+
+static int ls7a_rtc_pre_save(void *opaque)
+{
+    LS7ARtcState *s = LS7A_RTC(opaque);
+
+    ls7a_toy_stop(s);
+    ls7a_rtc_stop(s);
+
+    return 0;
+}
+
+static int ls7a_rtc_post_load(void *opaque, int version_id)
+{
+    LS7ARtcState *s = LS7A_RTC(opaque);
+    if (toy_enabled(s)) {
+        ls7a_toy_start(s);
+    }
+
+    if (rtc_enabled(s)) {
+        ls7a_rtc_start(s);
+    }
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_ls7a_rtc = {
+    .name = "ls7a_rtc",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .pre_save = ls7a_rtc_pre_save,
+    .post_load = ls7a_rtc_post_load,
+    .fields = (VMStateField[]) {
+        VMSTATE_INT64(offset_toy, LS7ARtcState),
+        VMSTATE_INT64(offset_rtc, LS7ARtcState),
+        VMSTATE_UINT64(save_toy_mon, LS7ARtcState),
+        VMSTATE_UINT64(save_toy_year, LS7ARtcState),
+        VMSTATE_UINT64(save_rtc, LS7ARtcState),
+        VMSTATE_UINT32_ARRAY(toymatch, LS7ARtcState, TIMER_NUMS),
+        VMSTATE_UINT32_ARRAY(rtcmatch, LS7ARtcState, TIMER_NUMS),
+        VMSTATE_UINT32(cntrctl, LS7ARtcState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void ls7a_rtc_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    dc->vmsd = &vmstate_ls7a_rtc;
+    dc->realize = ls7a_rtc_realize;
+    dc->desc = "ls7a rtc";
+}
+
+static const TypeInfo ls7a_rtc_info = {
+    .name          = TYPE_LS7A_RTC,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(LS7ARtcState),
+    .class_init    = ls7a_rtc_class_init,
+};
+
+static void ls7a_rtc_register_types(void)
+{
+    type_register_static(&ls7a_rtc_info);
+}
+
+type_init(ls7a_rtc_register_types)
diff --git a/hw/rtc/meson.build b/hw/rtc/meson.build
index 7cecdee..dc33973 100644
--- a/hw/rtc/meson.build
+++ b/hw/rtc/meson.build
@@ -11,6 +11,7 @@ softmmu_ss.add(when: 'CONFIG_EXYNOS4', if_true: files('exynos4210_rtc.c'))
 softmmu_ss.add(when: 'CONFIG_SUN4V_RTC', if_true: files('sun4v-rtc.c'))
 softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files('aspeed_rtc.c'))
 softmmu_ss.add(when: 'CONFIG_GOLDFISH_RTC', if_true: files('goldfish_rtc.c'))
+softmmu_ss.add(when: 'CONFIG_LS7A_RTC', if_true: files('ls7a_rtc.c'))
 softmmu_ss.add(when: 'CONFIG_ALLWINNER_H3', if_true: files('allwinner-rtc.c'))
 
 specific_ss.add(when: 'CONFIG_MC146818RTC', if_true: files('mc146818rtc.c'))
diff --git a/include/disas/dis-asm.h b/include/disas/dis-asm.h
index fc7cb7a..64247ec 100644
--- a/include/disas/dis-asm.h
+++ b/include/disas/dis-asm.h
@@ -253,6 +253,7 @@ enum bfd_architecture
 #define bfd_mach_rx            0x75
 #define bfd_mach_rx_v2         0x76
 #define bfd_mach_rx_v3         0x77
+  bfd_arch_loongarch,
   bfd_arch_last
   };
 #define bfd_mach_s390_31 31
@@ -458,6 +459,7 @@ int print_insn_riscv64          (bfd_vma, disassemble_info*);
 int print_insn_riscv128         (bfd_vma, disassemble_info*);
 int print_insn_rx(bfd_vma, disassemble_info *);
 int print_insn_hexagon(bfd_vma, disassemble_info *);
+int print_insn_loongarch(bfd_vma, disassemble_info *);
 
 #ifdef CONFIG_CAPSTONE
 bool cap_disas_target(disassemble_info *info, uint64_t pc, size_t size);
diff --git a/include/exec/poison.h b/include/exec/poison.h
index 9f1ca34..bbb82cf 100644
--- a/include/exec/poison.h
+++ b/include/exec/poison.h
@@ -14,6 +14,7 @@
 #pragma GCC poison TARGET_CRIS
 #pragma GCC poison TARGET_HEXAGON
 #pragma GCC poison TARGET_HPPA
+#pragma GCC poison TARGET_LOONGARCH64
 #pragma GCC poison TARGET_M68K
 #pragma GCC poison TARGET_MICROBLAZE
 #pragma GCC poison TARGET_MIPS
@@ -71,6 +72,7 @@
 #pragma GCC poison CONFIG_HPPA_DIS
 #pragma GCC poison CONFIG_I386_DIS
 #pragma GCC poison CONFIG_HEXAGON_DIS
+#pragma GCC poison CONFIG_LOONGARCH_DIS
 #pragma GCC poison CONFIG_M68K_DIS
 #pragma GCC poison CONFIG_MICROBLAZE_DIS
 #pragma GCC poison CONFIG_MIPS_DIS
diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h
new file mode 100644
index 0000000..15b8c99
--- /dev/null
+++ b/include/hw/intc/loongarch_extioi.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch 3A5000 ext interrupt controller definitions
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "hw/sysbus.h"
+#include "hw/loongarch/virt.h"
+
+#ifndef LOONGARCH_EXTIOI_H
+#define LOONGARCH_EXTIOI_H
+
+#define LS3A_INTC_IP               8
+#define EXTIOI_IRQS                (256)
+#define EXTIOI_IRQS_BITMAP_SIZE    (256 / 8)
+/* map to ipnum per 32 irqs */
+#define EXTIOI_IRQS_IPMAP_SIZE     (256 / 32)
+#define EXTIOI_IRQS_COREMAP_SIZE   256
+#define EXTIOI_IRQS_NODETYPE_COUNT  16
+#define EXTIOI_IRQS_GROUP_COUNT    8
+
+#define APIC_OFFSET                  0x400
+#define APIC_BASE                    (0x1000ULL + APIC_OFFSET)
+
+#define EXTIOI_NODETYPE_START        (0x4a0 - APIC_OFFSET)
+#define EXTIOI_NODETYPE_END          (0x4c0 - APIC_OFFSET)
+#define EXTIOI_IPMAP_START           (0x4c0 - APIC_OFFSET)
+#define EXTIOI_IPMAP_END             (0x4c8 - APIC_OFFSET)
+#define EXTIOI_ENABLE_START          (0x600 - APIC_OFFSET)
+#define EXTIOI_ENABLE_END            (0x620 - APIC_OFFSET)
+#define EXTIOI_BOUNCE_START          (0x680 - APIC_OFFSET)
+#define EXTIOI_BOUNCE_END            (0x6a0 - APIC_OFFSET)
+#define EXTIOI_ISR_START             (0x700 - APIC_OFFSET)
+#define EXTIOI_ISR_END               (0x720 - APIC_OFFSET)
+#define EXTIOI_COREISR_START         (0x800 - APIC_OFFSET)
+#define EXTIOI_COREISR_END           (0xB20 - APIC_OFFSET)
+#define EXTIOI_COREMAP_START         (0xC00 - APIC_OFFSET)
+#define EXTIOI_COREMAP_END           (0xD00 - APIC_OFFSET)
+
+#define TYPE_LOONGARCH_EXTIOI "loongarch.extioi"
+OBJECT_DECLARE_SIMPLE_TYPE(LoongArchExtIOI, LOONGARCH_EXTIOI)
+struct LoongArchExtIOI {
+    SysBusDevice parent_obj;
+    /* hardware state */
+    uint32_t nodetype[EXTIOI_IRQS_NODETYPE_COUNT / 2];
+    uint32_t bounce[EXTIOI_IRQS_GROUP_COUNT];
+    uint32_t isr[EXTIOI_IRQS / 32];
+    uint32_t coreisr[LOONGARCH_MAX_VCPUS][EXTIOI_IRQS_GROUP_COUNT];
+    uint32_t enable[EXTIOI_IRQS / 32];
+    uint32_t ipmap[EXTIOI_IRQS_IPMAP_SIZE / 4];
+    uint32_t coremap[EXTIOI_IRQS / 4];
+    uint32_t sw_pending[EXTIOI_IRQS / 32];
+    DECLARE_BITMAP(sw_isr[LOONGARCH_MAX_VCPUS][LS3A_INTC_IP], EXTIOI_IRQS);
+    uint8_t  sw_ipmap[EXTIOI_IRQS_IPMAP_SIZE];
+    uint8_t  sw_coremap[EXTIOI_IRQS];
+    qemu_irq parent_irq[LOONGARCH_MAX_VCPUS][LS3A_INTC_IP];
+    qemu_irq irq[EXTIOI_IRQS];
+    MemoryRegion extioi_iocsr_mem[LOONGARCH_MAX_VCPUS];
+    MemoryRegion extioi_system_mem;
+};
+#endif /* LOONGARCH_EXTIOI_H */
diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongarch_ipi.h
new file mode 100644
index 0000000..996ed7e
--- /dev/null
+++ b/include/hw/intc/loongarch_ipi.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch ipi interrupt header files
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef HW_LOONGARCH_IPI_H
+#define HW_LOONGARCH_IPI_H
+
+#include "hw/sysbus.h"
+
+/* Mainy used by iocsr read and write */
+#define SMP_IPI_MAILBOX      0x1000ULL
+#define CORE_STATUS_OFF       0x0
+#define CORE_EN_OFF           0x4
+#define CORE_SET_OFF          0x8
+#define CORE_CLEAR_OFF        0xc
+#define CORE_BUF_20           0x20
+#define CORE_BUF_28           0x28
+#define CORE_BUF_30           0x30
+#define CORE_BUF_38           0x38
+#define IOCSR_IPI_SEND        0x40
+#define IOCSR_MAIL_SEND       0x48
+#define IOCSR_ANY_SEND        0x158
+
+/* IPI system memory address */
+#define IPI_SYSTEM_MEM        0x1fe01000
+
+#define MAX_IPI_CORE_NUM      4
+#define MAX_IPI_MBX_NUM       4
+
+#define TYPE_LOONGARCH_IPI "loongarch_ipi"
+OBJECT_DECLARE_SIMPLE_TYPE(LoongArchIPI, LOONGARCH_IPI)
+
+typedef struct IPICore {
+    uint32_t status;
+    uint32_t en;
+    uint32_t set;
+    uint32_t clear;
+    /* 64bit buf divide into 2 32bit buf */
+    uint32_t buf[MAX_IPI_MBX_NUM * 2];
+    qemu_irq irq;
+} IPICore;
+
+struct LoongArchIPI {
+    SysBusDevice parent_obj;
+    MemoryRegion ipi_iocsr_mem[MAX_IPI_CORE_NUM];
+    MemoryRegion ipi_system_mem[MAX_IPI_CORE_NUM];
+};
+
+#endif
diff --git a/include/hw/intc/loongarch_pch_msi.h b/include/hw/intc/loongarch_pch_msi.h
new file mode 100644
index 0000000..f668bfc
--- /dev/null
+++ b/include/hw/intc/loongarch_pch_msi.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch 7A1000 I/O interrupt controller definitions
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#define TYPE_LOONGARCH_PCH_MSI "loongarch_pch_msi"
+OBJECT_DECLARE_SIMPLE_TYPE(LoongArchPCHMSI, LOONGARCH_PCH_MSI)
+
+/* Msi irq start start from 64 to 255 */
+#define PCH_MSI_IRQ_START   64
+#define PCH_MSI_IRQ_END     255
+#define PCH_MSI_IRQ_NUM     192
+
+struct LoongArchPCHMSI {
+    SysBusDevice parent_obj;
+    qemu_irq pch_msi_irq[PCH_MSI_IRQ_NUM];
+    MemoryRegion msi_mmio;
+};
diff --git a/include/hw/intc/loongarch_pch_pic.h b/include/hw/intc/loongarch_pch_pic.h
new file mode 100644
index 0000000..2d4aa9e
--- /dev/null
+++ b/include/hw/intc/loongarch_pch_pic.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch 7A1000 I/O interrupt controller definitions
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#define TYPE_LOONGARCH_PCH_PIC "loongarch_pch_pic"
+#define PCH_PIC_NAME(name) TYPE_LOONGARCH_PCH_PIC#name
+OBJECT_DECLARE_SIMPLE_TYPE(LoongArchPCHPIC, LOONGARCH_PCH_PIC)
+
+#define PCH_PIC_IRQ_START               0
+#define PCH_PIC_IRQ_END                 63
+#define PCH_PIC_IRQ_NUM                 64
+#define PCH_PIC_INT_ID_VAL              0x7000000UL
+#define PCH_PIC_INT_ID_NUM              0x3f0001UL
+
+#define PCH_PIC_INT_ID_LO               0x00
+#define PCH_PIC_INT_ID_HI               0x04
+#define PCH_PIC_INT_MASK_LO             0x20
+#define PCH_PIC_INT_MASK_HI             0x24
+#define PCH_PIC_HTMSI_EN_LO             0x40
+#define PCH_PIC_HTMSI_EN_HI             0x44
+#define PCH_PIC_INT_EDGE_LO             0x60
+#define PCH_PIC_INT_EDGE_HI             0x64
+#define PCH_PIC_INT_CLEAR_LO            0x80
+#define PCH_PIC_INT_CLEAR_HI            0x84
+#define PCH_PIC_AUTO_CTRL0_LO           0xc0
+#define PCH_PIC_AUTO_CTRL0_HI           0xc4
+#define PCH_PIC_AUTO_CTRL1_LO           0xe0
+#define PCH_PIC_AUTO_CTRL1_HI           0xe4
+#define PCH_PIC_ROUTE_ENTRY_OFFSET      0x100
+#define PCH_PIC_ROUTE_ENTRY_END         0x13f
+#define PCH_PIC_HTMSI_VEC_OFFSET        0x200
+#define PCH_PIC_HTMSI_VEC_END           0x23f
+#define PCH_PIC_INT_STATUS_LO           0x3a0
+#define PCH_PIC_INT_STATUS_HI           0x3a4
+#define PCH_PIC_INT_POL_LO              0x3e0
+#define PCH_PIC_INT_POL_HI              0x3e4
+
+#define STATUS_LO_START                 0
+#define STATUS_HI_START                 0x4
+#define POL_LO_START                    0x40
+#define POL_HI_START                    0x44
+struct LoongArchPCHPIC {
+    SysBusDevice parent_obj;
+    qemu_irq parent_irq[64];
+    uint64_t int_mask; /*0x020 interrupt mask register*/
+    uint64_t htmsi_en; /*0x040 1=msi*/
+    uint64_t intedge; /*0x060 edge=1 level  =0*/
+    uint64_t intclr; /*0x080 for clean edge int,set 1 clean,set 0 is noused*/
+    uint64_t auto_crtl0; /*0x0c0*/
+    uint64_t auto_crtl1; /*0x0e0*/
+    uint64_t last_intirr;    /* edge detection */
+    uint64_t intirr; /* 0x380 interrupt request register */
+    uint64_t intisr; /* 0x3a0 interrupt service register */
+    /*
+     * 0x3e0 interrupt level polarity selection
+     * register 0 for high level trigger
+     */
+    uint64_t int_polarity;
+
+    uint8_t route_entry[64]; /*0x100 - 0x138*/
+    uint8_t htmsi_vector[64]; /*0x200 - 0x238*/
+
+    MemoryRegion iomem32_low;
+    MemoryRegion iomem32_high;
+    MemoryRegion iomem8;
+};
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
new file mode 100644
index 0000000..09a8161
--- /dev/null
+++ b/include/hw/loongarch/virt.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Definitions for loongarch board emulation.
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef HW_LOONGARCH_H
+#define HW_LOONGARCH_H
+
+#include "target/loongarch/cpu.h"
+#include "hw/boards.h"
+#include "qemu/queue.h"
+#include "hw/intc/loongarch_ipi.h"
+
+#define LOONGARCH_MAX_VCPUS     4
+
+#define LOONGARCH_ISA_IO_BASE   0x18000000UL
+#define LOONGARCH_ISA_IO_SIZE   0x0004000
+
+struct LoongArchMachineState {
+    /*< private >*/
+    MachineState parent_obj;
+
+    IPICore ipi_core[MAX_IPI_CORE_NUM];
+    MemoryRegion lowmem;
+    MemoryRegion highmem;
+    MemoryRegion isa_io;
+};
+
+#define TYPE_LOONGARCH_MACHINE  MACHINE_TYPE_NAME("virt")
+OBJECT_DECLARE_SIMPLE_TYPE(LoongArchMachineState, LOONGARCH_MACHINE)
+#endif
diff --git a/include/hw/pci-host/ls7a.h b/include/hw/pci-host/ls7a.h
new file mode 100644
index 0000000..08c5f78
--- /dev/null
+++ b/include/hw/pci-host/ls7a.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef HW_LS7A_H
+#define HW_LS7A_H
+
+#include "hw/pci/pci.h"
+#include "hw/pci/pcie_host.h"
+#include "hw/pci-host/pam.h"
+#include "qemu/units.h"
+#include "qemu/range.h"
+#include "qom/object.h"
+
+#define LS7A_PCI_MEM_BASE        0x40000000UL
+#define LS7A_PCI_MEM_SIZE        0x40000000UL
+#define LS7A_PCI_IO_OFFSET      0x4000
+#define LS_PCIECFG_BASE         0x20000000
+#define LS_PCIECFG_SIZE         0x08000000
+#define LS7A_PCI_IO_BASE        0x18004000UL
+#define LS7A_PCI_IO_SIZE        0xC000
+
+#define LS7A_PCH_REG_BASE       0x10000000UL
+#define LS7A_IOAPIC_REG_BASE    (LS7A_PCH_REG_BASE)
+#define LS7A_PCH_MSI_ADDR_LOW   0x2FF00000UL
+
+/*
+ * According to the kernel pch irq start from 64 offset
+ * 0 ~ 16 irqs used for non-pci device while 16 ~ 64 irqs
+ * used for pci device.
+ */
+#define PCH_PIC_IRQ_OFFSET      64
+#define LS7A_DEVICE_IRQS        16
+#define LS7A_PCI_IRQS           48
+#define LS7A_UART_IRQ           (PCH_PIC_IRQ_OFFSET + 2)
+#define LS7A_UART_BASE          0x1fe001e0
+#define LS7A_RTC_IRQ            (PCH_PIC_IRQ_OFFSET + 3)
+#define LS7A_MISC_REG_BASE      (LS7A_PCH_REG_BASE + 0x00080000)
+#define LS7A_RTC_REG_BASE       (LS7A_MISC_REG_BASE + 0x00050100)
+#define LS7A_RTC_LEN            0x100
+#endif
diff --git a/include/sysemu/arch_init.h b/include/sysemu/arch_init.h
index 79c2591..8850cb1 100644
--- a/include/sysemu/arch_init.h
+++ b/include/sysemu/arch_init.h
@@ -24,6 +24,7 @@ enum {
     QEMU_ARCH_RX = (1 << 20),
     QEMU_ARCH_AVR = (1 << 21),
     QEMU_ARCH_HEXAGON = (1 << 22),
+    QEMU_ARCH_LOONGARCH = (1 << 23),
 };
 
 extern const uint32_t arch_type;
diff --git a/meson.build b/meson.build
index d738391..21cd949 100644
--- a/meson.build
+++ b/meson.build
@@ -2349,6 +2349,7 @@ disassemblers = {
   'sh4' : ['CONFIG_SH4_DIS'],
   'sparc' : ['CONFIG_SPARC_DIS'],
   'xtensa' : ['CONFIG_XTENSA_DIS'],
+  'loongarch' : ['CONFIG_LOONGARCH_DIS'],
 }
 if link_language == 'cpp'
   disassemblers += {
diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index 06b0d2c..2e267fa 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -323,7 +323,8 @@
                    'TARGET_ARM',
                    'TARGET_I386',
                    'TARGET_S390X',
-                   'TARGET_MIPS' ] } }
+                   'TARGET_MIPS',
+                   'TARGET_LOONGARCH64' ] } }
 
 ##
 # @query-cpu-definitions:
@@ -339,4 +340,5 @@
                    'TARGET_ARM',
                    'TARGET_I386',
                    'TARGET_S390X',
-                   'TARGET_MIPS' ] } }
+                   'TARGET_MIPS',
+                   'TARGET_LOONGARCH64' ] } }
diff --git a/qapi/machine.json b/qapi/machine.json
index 883ce3f..f750a16 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -30,7 +30,7 @@
 ##
 { 'enum' : 'SysEmuTarget',
   'data' : [ 'aarch64', 'alpha', 'arm', 'avr', 'cris', 'hppa', 'i386',
-             'm68k', 'microblaze', 'microblazeel', 'mips', 'mips64',
+             'loongarch64', 'm68k', 'microblaze', 'microblazeel', 'mips', 'mips64',
              'mips64el', 'mipsel', 'nios2', 'or1k', 'ppc',
              'ppc64', 'riscv32', 'riscv64', 'rx', 's390x', 'sh4',
              'sh4eb', 'sparc', 'sparc64', 'tricore',
diff --git a/softmmu/qdev-monitor.c b/softmmu/qdev-monitor.c
index 12fe60c..bb5897f 100644
--- a/softmmu/qdev-monitor.c
+++ b/softmmu/qdev-monitor.c
@@ -60,7 +60,8 @@ typedef struct QDevAlias
                               QEMU_ARCH_HPPA | QEMU_ARCH_I386 | \
                               QEMU_ARCH_MIPS | QEMU_ARCH_PPC |  \
                               QEMU_ARCH_RISCV | QEMU_ARCH_SH4 | \
-                              QEMU_ARCH_SPARC | QEMU_ARCH_XTENSA)
+                              QEMU_ARCH_SPARC | QEMU_ARCH_XTENSA | \
+                              QEMU_ARCH_LOONGARCH)
 #define QEMU_ARCH_VIRTIO_CCW (QEMU_ARCH_S390X)
 #define QEMU_ARCH_VIRTIO_MMIO (QEMU_ARCH_M68K)
 
diff --git a/target/Kconfig b/target/Kconfig
index ae7f24f..83da0bd 100644
--- a/target/Kconfig
+++ b/target/Kconfig
@@ -4,6 +4,7 @@ source avr/Kconfig
 source cris/Kconfig
 source hppa/Kconfig
 source i386/Kconfig
+source loongarch/Kconfig
 source m68k/Kconfig
 source microblaze/Kconfig
 source mips/Kconfig
diff --git a/target/loongarch/Kconfig b/target/loongarch/Kconfig
new file mode 100644
index 0000000..46b26b1
--- /dev/null
+++ b/target/loongarch/Kconfig
@@ -0,0 +1,2 @@
+config LOONGARCH64
+    bool
diff --git a/target/loongarch/README b/target/loongarch/README
new file mode 100644
index 0000000..4dcd0f1
--- /dev/null
+++ b/target/loongarch/README
@@ -0,0 +1,64 @@
+- Introduction
+
+  LoongArch is the general processor architecture of Loongson.
+
+  The following versions of the LoongArch core are supported
+    core: 3A5000
+    https://github.com/loongson/LoongArch-Documentation/releases/download/2021.08.17/LoongArch-Vol1-v1.00-EN.pdf
+
+  We can get the latest loongarch documents at https://github.com/loongson/LoongArch-Documentation/tags.
+
+
+- System emulation
+
+  Mainly emulate a virt 3A5000 board and ls7a bridge that is not exactly the same as the host.
+  3A5000 support multiple interrupt cascading while here we just emulate the extioi interrupt
+  cascading. LS7A1000 host bridge support multiple devices, such as sata, gmac, uart, rtc
+  and so on. But we just realize the rtc. Others use the qemu common devices. It does not affect
+  the general use. We also introduced the emulation of devices at docs/system/loongarch/loongson3.rst.
+
+  This version only supports running binary files in ELF format, and does not depend on BIOS and kernel file.
+  You can compile the test program with 'make & make check-tcg' and run the test case with the following command:
+
+  1. Install LoongArch cross-tools on X86 machines.
+
+    Download cross-tools.
+
+      wget https://github.com/loongson/build-tools/releases/latest/download/loongarch64-clfs-20211202-cross-tools.tar.xz
+
+      tar -vxf loongarch64-clfs-20211202-cross-tools.tar.xz -C /opt
+
+    Config cross-tools env.
+
+      . setenv.sh
+
+      setenv.sh:
+
+          #!/bin/sh
+          set -x
+          CC_PREFIX=/opt/cross-tools
+
+          export PATH=$CC_PREFIX/bin:$PATH
+          export LD_LIBRARY_PATH=$CC_PREFIX/lib:$LD_LIBRARY_PATH
+          export LD_LIBRARY_PATH=$CC_PREFIX/loongarch64-unknown-linux-gnu/lib/:$LD_LIBRARY_PATH
+          set +x
+
+  2. Test tests/tcg/multiarch.
+
+    ./configure --disable-rdma --disable-pvrdma --prefix=/usr  \
+            --target-list="loongarch64-softmmu"  \
+            --disable-libiscsi --disable-libnfs --disable-libpmem \
+            --disable-glusterfs --enable-libusb --enable-usb-redir \
+            --disable-opengl --disable-xen --enable-spice --disable-werror \
+            --enable-debug --disable-capstone --disable-kvm --enable-profiler
+
+    cd  build/
+
+    make && make check-tcg
+
+    or
+
+    ./build/qemu-system-loongarch64 -machine virt -m 4G -cpu Loongson-3A5000 -smp 1 -kernel build/tests/tcg/loongarch64-softmmu/hello -monitor none -display none -chardev file,path=hello.out,id=output -serial chardev:output
+
+- Note.
+  We can get the latest LoongArch documents or LoongArch tools at https://github.com/loongson/
diff --git a/target/loongarch/constant_timer.c b/target/loongarch/constant_timer.c
new file mode 100644
index 0000000..1851f53
--- /dev/null
+++ b/target/loongarch/constant_timer.c
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch constant timer support
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/timer.h"
+#include "cpu.h"
+#include "internals.h"
+#include "cpu-csr.h"
+
+#define TIMER_PERIOD                10 /* 10 ns period for 100 MHz frequency */
+#define CONSTANT_TIMER_TICK_MASK    0xfffffffffffcUL
+#define CONSTANT_TIMER_ENABLE       0x1UL
+
+uint64_t cpu_loongarch_get_constant_timer_counter(LoongArchCPU *cpu)
+{
+    return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / TIMER_PERIOD;
+}
+
+uint64_t cpu_loongarch_get_constant_timer_ticks(LoongArchCPU *cpu)
+{
+    uint64_t now, expire;
+
+    now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+    expire = timer_expire_time_ns(&cpu->timer);
+
+    return (expire - now) / TIMER_PERIOD;
+}
+
+void cpu_loongarch_store_constant_timer_config(LoongArchCPU *cpu,
+                                               uint64_t value)
+{
+    CPULoongArchState *env = &cpu->env;
+    uint64_t now, next;
+
+    env->CSR_TCFG = value;
+    if (value & CONSTANT_TIMER_ENABLE) {
+        now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+        next = now + (value & CONSTANT_TIMER_TICK_MASK) * TIMER_PERIOD;
+        timer_mod(&cpu->timer, next);
+    } else {
+        timer_del(&cpu->timer);
+    }
+}
+
+void loongarch_constant_timer_cb(void *opaque)
+{
+    LoongArchCPU *cpu  = opaque;
+    CPULoongArchState *env = &cpu->env;
+    uint64_t now, next;
+
+    if (FIELD_EX64(env->CSR_TCFG, CSR_TCFG, PERIODIC)) {
+        now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+        next = now + (env->CSR_TCFG & CONSTANT_TIMER_TICK_MASK) * TIMER_PERIOD;
+        timer_mod(&cpu->timer, next);
+    } else {
+        env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0);
+    }
+
+    loongarch_cpu_set_irq(opaque, IRQ_TIMER, 1);
+}
diff --git a/target/loongarch/cpu-csr.h b/target/loongarch/cpu-csr.h
new file mode 100644
index 0000000..4c8ce7f
--- /dev/null
+++ b/target/loongarch/cpu-csr.h
@@ -0,0 +1,208 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CSRs
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_CPU_CSR_H
+#define LOONGARCH_CPU_CSR_H
+
+#include "hw/registerfields.h"
+
+/* Base on kernal definitions: arch/loongarch/include/asm/loongarch.h */
+
+/* Basic CSRs */
+#define LOONGARCH_CSR_CRMD           0x0 /* Current mode info */
+
+#define LOONGARCH_CSR_PRMD           0x1 /* Prev-exception mode info */
+FIELD(CSR_PRMD, PPLV, 0, 2)
+FIELD(CSR_PRMD, PIE, 2, 1)
+FIELD(CSR_PRMD, PWE, 3, 1)
+
+#define LOONGARCH_CSR_EUEN           0x2 /* Extended unit enable */
+FIELD(CSR_EUEN, FPE, 0, 1)
+FIELD(CSR_EUEN, SXE, 1, 1)
+FIELD(CSR_EUEN, ASXE, 2, 1)
+FIELD(CSR_EUEN, BTE, 3, 1)
+
+#define LOONGARCH_CSR_MISC           0x3 /* Misc config */
+FIELD(CSR_MISC, VA32, 0, 4)
+FIELD(CSR_MISC, DRDTL, 4, 4)
+FIELD(CSR_MISC, RPCNTL, 8, 4)
+FIELD(CSR_MISC, ALCL, 12, 4)
+FIELD(CSR_MISC, DWPL, 16, 3)
+
+#define LOONGARCH_CSR_ECFG           0x4 /* Exception config */
+FIELD(CSR_ECFG, LIE, 0, 13)
+FIELD(CSR_ECFG, VS, 16, 3)
+
+#define LOONGARCH_CSR_ESTAT          0x5 /* Exception status */
+FIELD(CSR_ESTAT, IS, 0, 13)
+FIELD(CSR_ESTAT, ECODE, 16, 6)
+FIELD(CSR_ESTAT, ESUBCODE, 22, 9)
+
+#define LOONGARCH_CSR_ERA            0x6 /* Exception return address */
+
+#define LOONGARCH_CSR_BADV           0x7 /* Bad virtual address */
+
+#define LOONGARCH_CSR_BADI           0x8 /* Bad instruction */
+
+#define LOONGARCH_CSR_EENTRY         0xc /* Exception entry address */
+
+/* TLB related CSRs */
+#define LOONGARCH_CSR_TLBIDX         0x10 /* TLB Index, EHINV, PageSize, NP */
+FIELD(CSR_TLBIDX, INDEX, 0, 12)
+FIELD(CSR_TLBIDX, PS, 24, 6)
+FIELD(CSR_TLBIDX, NE, 31, 1)
+
+#define LOONGARCH_CSR_TLBEHI         0x11 /* TLB EntryHi */
+FIELD(CSR_TLBEHI, VPPN, 13, 35)
+
+#define LOONGARCH_CSR_TLBELO0        0x12 /* TLB EntryLo0 */
+#define LOONGARCH_CSR_TLBELO1        0x13 /* TLB EntryLo1 */
+FIELD(TLBENTRY, V, 0, 1)
+FIELD(TLBENTRY, D, 1, 1)
+FIELD(TLBENTRY, PLV, 2, 2)
+FIELD(TLBENTRY, MAT, 4, 2)
+FIELD(TLBENTRY, G, 6, 1)
+FIELD(TLBENTRY, PPN, 12, 36)
+FIELD(TLBENTRY, NR, 61, 1)
+FIELD(TLBENTRY, NX, 62, 1)
+FIELD(TLBENTRY, RPLV, 63, 1)
+
+#define LOONGARCH_CSR_ASID           0x18 /* Address space identifier */
+FIELD(CSR_ASID, ASID, 0, 10)
+FIELD(CSR_ASID, ASIDBITS, 16, 8)
+
+/* Page table base address when badv[47] = 0 */
+#define LOONGARCH_CSR_PGDL           0x19
+/* Page table base address when badv[47] = 1 */
+#define LOONGARCH_CSR_PGDH           0x1a
+
+#define LOONGARCH_CSR_PGD            0x1b /* Page table base address */
+
+/* Page walk controller's low addr */
+#define LOONGARCH_CSR_PWCL           0x1c
+FIELD(CSR_PWCL, PTBASE, 0, 5)
+FIELD(CSR_PWCL, PTWIDTH, 5, 5)
+FIELD(CSR_PWCL, DIR1_BASE, 10, 5)
+FIELD(CSR_PWCL, DIR1_WIDTH, 15, 5)
+FIELD(CSR_PWCL, DIR2_BASE, 20, 5)
+FIELD(CSR_PWCL, DIR2_WIDTH, 25, 5)
+FIELD(CSR_PWCL, PTEWIDTH, 30, 2)
+
+/* Page walk controller's high addr */
+#define LOONGARCH_CSR_PWCH           0x1d
+FIELD(CSR_PWCH, DIR3_BASE, 0, 6)
+FIELD(CSR_PWCH, DIR3_WIDTH, 6, 6)
+FIELD(CSR_PWCH, DIR4_BASE, 12, 6)
+FIELD(CSR_PWCH, DIR4_WIDTH, 18, 6)
+
+#define LOONGARCH_CSR_STLBPS         0x1e /* Stlb page size */
+FIELD(CSR_STLBPS, PS, 0, 5)
+
+#define LOONGARCH_CSR_RVACFG         0x1f /* Reduced virtual address config */
+FIELD(CSR_RVACFG, RBITS, 0, 4)
+
+/* Config CSRs */
+#define LOONGARCH_CSR_CPUID          0x20 /* CPU core id */
+
+#define LOONGARCH_CSR_PRCFG1         0x21 /* Config1 */
+FIELD(CSR_PRCFG1, SAVE_NUM, 0, 4)
+FIELD(CSR_PRCFG1, TIMER_BITS, 4, 8)
+FIELD(CSR_PRCFG1, VSMAX, 12, 3)
+
+#define LOONGARCH_CSR_PRCFG2         0x22 /* Config2 */
+
+#define LOONGARCH_CSR_PRCFG3         0x23 /* Config3 */
+FIELD(CSR_PRCFG3, TLB_TYPE, 0, 4)
+FIELD(CSR_PRCFG3, MTLB_ENTRY, 4, 8)
+FIELD(CSR_PRCFG3, STLB_WAYS, 12, 8)
+FIELD(CSR_PRCFG3, STLB_SETS, 20, 8)
+
+/*
+ * Save registers count can read from PRCFG1.SAVE_NUM
+ * The Min count is 1. Max count is 15.
+ */
+#define LOONGARCH_CSR_SAVE(N)        (0x30 + N)
+
+/* Timer CSRs */
+#define LOONGARCH_CSR_TID            0x40 /* Timer ID */
+
+#define LOONGARCH_CSR_TCFG           0x41 /* Timer config */
+FIELD(CSR_TCFG, EN, 0, 1)
+FIELD(CSR_TCFG, PERIODIC, 1, 1)
+FIELD(CSR_TCFG, INIT_VAL, 2, 46)
+
+#define LOONGARCH_CSR_TVAL           0x42 /* Timer ticks remain */
+
+#define LOONGARCH_CSR_CNTC           0x43 /* Timer offset */
+
+#define LOONGARCH_CSR_TICLR          0x44 /* Timer interrupt clear */
+
+/* LLBCTL CSRs */
+#define LOONGARCH_CSR_LLBCTL         0x60 /* LLBit control */
+FIELD(CSR_LLBCTL, ROLLB, 0, 1)
+FIELD(CSR_LLBCTL, WCLLB, 1, 1)
+FIELD(CSR_LLBCTL, KLO, 2, 1)
+
+/* Implement dependent */
+#define LOONGARCH_CSR_IMPCTL1        0x80 /* LoongArch config1 */
+
+#define LOONGARCH_CSR_IMPCTL2        0x81 /* LoongArch config2*/
+
+/* TLB Refill CSRs */
+#define LOONGARCH_CSR_TLBRENTRY      0x88 /* TLB refill exception address */
+#define LOONGARCH_CSR_TLBRBADV       0x89 /* TLB refill badvaddr */
+#define LOONGARCH_CSR_TLBRERA        0x8a /* TLB refill ERA */
+#define LOONGARCH_CSR_TLBRSAVE       0x8b /* KScratch for TLB refill */
+FIELD(CSR_TLBRERA, ISTLBR, 0, 1)
+FIELD(CSR_TLBRERA, PC, 2, 62)
+#define LOONGARCH_CSR_TLBRELO0       0x8c /* TLB refill entrylo0 */
+#define LOONGARCH_CSR_TLBRELO1       0x8d /* TLB refill entrylo1 */
+#define LOONGARCH_CSR_TLBREHI        0x8e /* TLB refill entryhi */
+FIELD(CSR_TLBREHI, PS, 0, 6)
+FIELD(CSR_TLBREHI, VPPN, 13, 35)
+#define LOONGARCH_CSR_TLBRPRMD       0x8f /* TLB refill mode info */
+FIELD(CSR_TLBRPRMD, PPLV, 0, 2)
+FIELD(CSR_TLBRPRMD, PIE, 2, 1)
+FIELD(CSR_TLBRPRMD, PWE, 4, 1)
+
+/* Machine Error CSRs */
+#define LOONGARCH_CSR_MERRCTL        0x90 /* ERRCTL */
+FIELD(CSR_MERRCTL, ISMERR, 0, 1)
+#define LOONGARCH_CSR_MERRINFO1      0x91
+#define LOONGARCH_CSR_MERRINFO2      0x92
+#define LOONGARCH_CSR_MERRENTRY      0x93 /* MError exception base */
+#define LOONGARCH_CSR_MERRERA        0x94 /* MError exception PC */
+#define LOONGARCH_CSR_MERRSAVE       0x95 /* KScratch for error exception */
+
+#define LOONGARCH_CSR_CTAG           0x98 /* TagLo + TagHi */
+
+/* Direct map windows CSRs*/
+#define LOONGARCH_CSR_DMW(N)         (0x180 + N)
+FIELD(CSR_DMW, PLV0, 0, 1)
+FIELD(CSR_DMW, PLV1, 1, 1)
+FIELD(CSR_DMW, PLV2, 2, 1)
+FIELD(CSR_DMW, PLV3, 3, 1)
+FIELD(CSR_DMW, MAT, 4, 2)
+FIELD(CSR_DMW, VSEG, 60, 4)
+
+#define dmw_va2pa(va) \
+    (va & MAKE_64BIT_MASK(0, TARGET_VIRT_ADDR_SPACE_BITS))
+
+/* Debug CSRs */
+#define LOONGARCH_CSR_DBG            0x500 /* debug config */
+FIELD(CSR_DBG, DST, 0, 1)
+FIELD(CSR_DBG, DREV, 1, 7)
+FIELD(CSR_DBG, DEI, 8, 1)
+FIELD(CSR_DBG, DCL, 9, 1)
+FIELD(CSR_DBG, DFW, 10, 1)
+FIELD(CSR_DBG, DMW, 11, 1)
+FIELD(CSR_DBG, ECODE, 16, 6)
+
+#define LOONGARCH_CSR_DERA           0x501 /* Debug era */
+#define LOONGARCH_CSR_DSAVE          0x502 /* Debug save */
+
+#endif /* LOONGARCH_CPU_CSR_H */
diff --git a/target/loongarch/cpu-param.h b/target/loongarch/cpu-param.h
new file mode 100644
index 0000000..414d8ff
--- /dev/null
+++ b/target/loongarch/cpu-param.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch CPU parameters for QEMU.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_CPU_PARAM_H
+#define LOONGARCH_CPU_PARAM_H
+
+#define TARGET_LONG_BITS 64
+#define TARGET_PHYS_ADDR_SPACE_BITS 48
+#define TARGET_VIRT_ADDR_SPACE_BITS 48
+
+#define TARGET_PAGE_BITS 14
+#define NB_MMU_MODES 5
+
+#endif
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
new file mode 100644
index 0000000..4c8f96b
--- /dev/null
+++ b/target/loongarch/cpu.c
@@ -0,0 +1,704 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/qemu-print.h"
+#include "qapi/error.h"
+#include "qemu/module.h"
+#include "sysemu/qtest.h"
+#include "exec/exec-all.h"
+#include "qapi/qapi-commands-machine-target.h"
+#include "cpu.h"
+#include "internals.h"
+#include "fpu/softfloat-helpers.h"
+#include "cpu-csr.h"
+#include "sysemu/reset.h"
+#include "hw/loader.h"
+
+const char * const regnames[32] = {
+    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+    "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+    "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+};
+
+const char * const fregnames[32] = {
+    "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+    "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
+    "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
+    "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
+};
+
+static const char * const excp_names[] = {
+    [EXCCODE_INT] = "Interrupt",
+    [EXCCODE_PIL] = "Page invalid exception for load",
+    [EXCCODE_PIS] = "Page invalid exception for store",
+    [EXCCODE_PIF] = "Page invalid exception for fetch",
+    [EXCCODE_PME] = "Page modified exception",
+    [EXCCODE_PNR] = "Page Not Readable exception",
+    [EXCCODE_PNX] = "Page Not Executable exception",
+    [EXCCODE_PPI] = "Page Privilege error",
+    [EXCCODE_ADEF] = "Address error for instruction fetch",
+    [EXCCODE_ADEM] = "Address error for Memory access",
+    [EXCCODE_SYS] = "Syscall",
+    [EXCCODE_BRK] = "Break",
+    [EXCCODE_INE] = "Instruction Non-Existent",
+    [EXCCODE_IPE] = "Instruction privilege error",
+    [EXCCODE_FPE] = "Floating Point Exception",
+    [EXCCODE_DBP] = "Debug breakpoint",
+};
+
+const char *loongarch_exception_name(int32_t exception)
+{
+    assert(excp_names[exception]);
+    return excp_names[exception];
+}
+
+void G_NORETURN do_raise_exception(CPULoongArchState *env,
+                                   uint32_t exception,
+                                   uintptr_t pc)
+{
+    CPUState *cs = env_cpu(env);
+
+    qemu_log_mask(CPU_LOG_INT, "%s: %d (%s)\n",
+                  __func__,
+                  exception,
+                  loongarch_exception_name(exception));
+    cs->exception_index = exception;
+
+    cpu_loop_exit_restore(cs, pc);
+}
+
+static void loongarch_cpu_set_pc(CPUState *cs, vaddr value)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+
+    env->pc = value;
+}
+
+#include "hw/loongarch/virt.h"
+
+void loongarch_cpu_set_irq(void *opaque, int irq, int level)
+{
+    LoongArchCPU *cpu = opaque;
+    CPULoongArchState *env = &cpu->env;
+    CPUState *cs = CPU(cpu);
+
+    if (irq < 0 || irq >= N_IRQS) {
+        return;
+    }
+
+    env->CSR_ESTAT = deposit64(env->CSR_ESTAT, irq, 1, level != 0);
+
+    if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) {
+        cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+    } else {
+        cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+    }
+}
+
+static inline bool cpu_loongarch_hw_interrupts_enabled(CPULoongArchState *env)
+{
+    bool ret = 0;
+
+    ret = (FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE) &&
+          !(FIELD_EX64(env->CSR_DBG, CSR_DBG, DST)));
+
+    return ret;
+}
+
+/* Check if there is pending and not masked out interrupt */
+static inline bool cpu_loongarch_hw_interrupts_pending(CPULoongArchState *env)
+{
+    uint32_t pending;
+    uint32_t status;
+    bool r;
+
+    pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS);
+    status  = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE);
+
+    r = (pending & status) != 0;
+    return r;
+}
+
+static void loongarch_cpu_do_interrupt(CPUState *cs)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+    bool update_badinstr = 1;
+    int cause = -1;
+    const char *name;
+    bool tlbfill = FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR);
+    uint32_t vec_size = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, VS);
+
+    if (cs->exception_index != EXCCODE_INT) {
+        if (cs->exception_index < 0 ||
+            cs->exception_index > ARRAY_SIZE(excp_names)) {
+            name = "unknown";
+        } else {
+            name = excp_names[cs->exception_index];
+        }
+
+        qemu_log_mask(CPU_LOG_INT,
+                     "%s enter: pc " TARGET_FMT_lx " ERA " TARGET_FMT_lx
+                     " TLBRERA " TARGET_FMT_lx " %s exception\n", __func__,
+                     env->pc, env->CSR_ERA, env->CSR_TLBRERA, name);
+    }
+
+    switch (cs->exception_index) {
+    case EXCCODE_DBP:
+        env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DCL, 1);
+        env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, ECODE, 0xC);
+        goto set_DERA;
+    set_DERA:
+        env->CSR_DERA = env->pc;
+        env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DST, 1);
+        env->pc = env->CSR_EENTRY + 0x480;
+        break;
+    case EXCCODE_INT:
+        if (FIELD_EX64(env->CSR_DBG, CSR_DBG, DST)) {
+            env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DEI, 1);
+            goto set_DERA;
+        }
+        QEMU_FALLTHROUGH;
+    case EXCCODE_PIF:
+        cause = cs->exception_index;
+        update_badinstr = 0;
+        break;
+    case EXCCODE_ADEM:
+    case EXCCODE_SYS:
+    case EXCCODE_BRK:
+    case EXCCODE_PIL:
+    case EXCCODE_PIS:
+    case EXCCODE_PME:
+    case EXCCODE_PNR:
+    case EXCCODE_PNX:
+    case EXCCODE_PPI:
+    case EXCCODE_INE:
+    case EXCCODE_IPE:
+    case EXCCODE_FPE:
+        cause = cs->exception_index;
+        break;
+    default:
+        qemu_log("Error: exception(%d) '%s' has not been supported\n",
+                 cs->exception_index, excp_names[cs->exception_index]);
+        abort();
+    }
+
+    if (update_badinstr) {
+        env->CSR_BADI = cpu_ldl_code(env, env->pc);
+    }
+
+    /* Save PLV and IE */
+    if (tlbfill) {
+        env->CSR_TLBRPRMD = FIELD_DP64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PPLV,
+                                       FIELD_EX64(env->CSR_CRMD,
+                                       CSR_CRMD, PLV));
+        env->CSR_TLBRPRMD = FIELD_DP64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PIE,
+                                       FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE));
+        /* set the DA mode */
+        env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1);
+        env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0);
+        env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA,
+                                      PC, (env->pc >> 2));
+    } else {
+        env->CSR_ESTAT = FIELD_DP64(env->CSR_ESTAT, CSR_ESTAT, ECODE, cause);
+        env->CSR_PRMD = FIELD_DP64(env->CSR_PRMD, CSR_PRMD, PPLV,
+                                   FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV));
+        env->CSR_PRMD = FIELD_DP64(env->CSR_PRMD, CSR_PRMD, PIE,
+                                   FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE));
+        env->CSR_ERA = env->pc;
+    }
+
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0);
+
+    if  (cs->exception_index == EXCCODE_INT) {
+        /* Interrupt */
+        uint32_t vector = 0;
+        uint32_t pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS);
+        pending &= FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE);
+
+        /* Find the highest-priority interrupt. */
+        vector = 31 - clz32(pending);
+        env->pc = env->CSR_EENTRY + (EXCCODE_EXTERNAL_INT + vector) * vec_size;
+        qemu_log_mask(CPU_LOG_INT,
+                      "%s: PC " TARGET_FMT_lx " ERA " TARGET_FMT_lx
+                      " cause %d\n" "    A " TARGET_FMT_lx " D "
+                      TARGET_FMT_lx " vector = %d ExC " TARGET_FMT_lx "ExS"
+                      TARGET_FMT_lx "\n",
+                      __func__, env->pc, env->CSR_ERA,
+                      cause, env->CSR_BADV, env->CSR_DERA, vector,
+                      env->CSR_ECFG, env->CSR_ESTAT);
+    } else {
+        if (tlbfill) {
+            env->pc = env->CSR_TLBRENTRY;
+        } else {
+            env->pc = env->CSR_EENTRY;
+            env->pc += cause * vec_size;
+        }
+        qemu_log_mask(CPU_LOG_INT,
+                      "%s: PC " TARGET_FMT_lx " ERA " TARGET_FMT_lx
+                      " cause %d%s\n, ESTAT " TARGET_FMT_lx
+                      " EXCFG " TARGET_FMT_lx " BADVA " TARGET_FMT_lx
+                      "BADI " TARGET_FMT_lx " SYS_NUM " TARGET_FMT_lu
+                      " cpu %d asid " TARGET_FMT_lx "\n", __func__, env->pc,
+                      tlbfill ? env->CSR_TLBRERA : env->CSR_ERA,
+                      cause, tlbfill ? "(refill)" : "", env->CSR_ESTAT,
+                      env->CSR_ECFG,
+                      tlbfill ? env->CSR_TLBRBADV : env->CSR_BADV,
+                      env->CSR_BADI, env->gpr[11], cs->cpu_index,
+                      env->CSR_ASID);
+    }
+    cs->exception_index = -1;
+}
+
+static void loongarch_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
+                                                vaddr addr, unsigned size,
+                                                MMUAccessType access_type,
+                                                int mmu_idx, MemTxAttrs attrs,
+                                                MemTxResult response,
+                                                uintptr_t retaddr)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+
+    if (access_type == MMU_INST_FETCH) {
+        do_raise_exception(env, EXCCODE_ADEF, retaddr);
+    } else {
+        do_raise_exception(env, EXCCODE_ADEM, retaddr);
+    }
+}
+
+static bool loongarch_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
+{
+    if (interrupt_request & CPU_INTERRUPT_HARD) {
+        LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+        CPULoongArchState *env = &cpu->env;
+
+        if (cpu_loongarch_hw_interrupts_enabled(env) &&
+            cpu_loongarch_hw_interrupts_pending(env)) {
+            /* Raise it */
+            cs->exception_index = EXCCODE_INT;
+            loongarch_cpu_do_interrupt(cs);
+            return true;
+        }
+    }
+    return false;
+}
+
+#ifdef CONFIG_TCG
+static void loongarch_cpu_synchronize_from_tb(CPUState *cs,
+                                              const TranslationBlock *tb)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+
+    env->pc = tb->pc;
+}
+#endif /* CONFIG_TCG */
+
+static bool loongarch_cpu_has_work(CPUState *cs)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+    bool has_work = false;
+
+    if ((cs->interrupt_request & CPU_INTERRUPT_HARD) &&
+        cpu_loongarch_hw_interrupts_pending(env)) {
+        has_work = true;
+    }
+
+    return has_work;
+}
+
+static void loongarch_la464_initfn(Object *obj)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(obj);
+    CPULoongArchState *env = &cpu->env;
+    int i;
+
+    for (i = 0; i < 21; i++) {
+        env->cpucfg[i] = 0x0;
+    }
+
+    env->cpucfg[0] = 0x14c010;  /* PRID */
+
+    uint32_t data = 0;
+    data = FIELD_DP32(data, CPUCFG1, ARCH, 2);
+    data = FIELD_DP32(data, CPUCFG1, PGMMU, 1);
+    data = FIELD_DP32(data, CPUCFG1, IOCSR, 1);
+    data = FIELD_DP32(data, CPUCFG1, PALEN, 0x2f);
+    data = FIELD_DP32(data, CPUCFG1, VALEN, 0x2f);
+    data = FIELD_DP32(data, CPUCFG1, UAL, 1);
+    data = FIELD_DP32(data, CPUCFG1, RI, 1);
+    data = FIELD_DP32(data, CPUCFG1, EP, 1);
+    data = FIELD_DP32(data, CPUCFG1, RPLV, 1);
+    data = FIELD_DP32(data, CPUCFG1, HP, 1);
+    data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1);
+    env->cpucfg[1] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG2, FP, 1);
+    data = FIELD_DP32(data, CPUCFG2, FP_SP, 1);
+    data = FIELD_DP32(data, CPUCFG2, FP_DP, 1);
+    data = FIELD_DP32(data, CPUCFG2, FP_VER, 1);
+    data = FIELD_DP32(data, CPUCFG2, LLFTP, 1);
+    data = FIELD_DP32(data, CPUCFG2, LLFTP_VER, 1);
+    data = FIELD_DP32(data, CPUCFG2, LAM, 1);
+    env->cpucfg[2] = data;
+
+    env->cpucfg[4] = 100 * 1000 * 1000; /* Crystal frequency */
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG5, CC_MUL, 1);
+    data = FIELD_DP32(data, CPUCFG5, CC_DIV, 1);
+    env->cpucfg[5] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG16, L1_IUPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L1_DPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L2_IUPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L2_IUUNIFY, 1);
+    data = FIELD_DP32(data, CPUCFG16, L2_IUPRIV, 1);
+    data = FIELD_DP32(data, CPUCFG16, L3_IUPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L3_IUUNIFY, 1);
+    data = FIELD_DP32(data, CPUCFG16, L3_IUINCL, 1);
+    env->cpucfg[16] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG17, L1IU_WAYS, 3);
+    data = FIELD_DP32(data, CPUCFG17, L1IU_SETS, 8);
+    data = FIELD_DP32(data, CPUCFG17, L1IU_SIZE, 6);
+    env->cpucfg[17] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG18, L1D_WAYS, 3);
+    data = FIELD_DP32(data, CPUCFG18, L1D_SETS, 8);
+    data = FIELD_DP32(data, CPUCFG18, L1D_SIZE, 6);
+    env->cpucfg[18] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG19, L2IU_WAYS, 15);
+    data = FIELD_DP32(data, CPUCFG19, L2IU_SETS, 8);
+    data = FIELD_DP32(data, CPUCFG19, L2IU_SIZE, 6);
+    env->cpucfg[19] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG20, L3IU_WAYS, 15);
+    data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 14);
+    data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 6);
+    env->cpucfg[20] = data;
+
+    env->CSR_ASID = FIELD_DP64(0, CSR_ASID, ASIDBITS, 0xa);
+}
+
+static void loongarch_cpu_list_entry(gpointer data, gpointer user_data)
+{
+    const char *typename = object_class_get_name(OBJECT_CLASS(data));
+
+    qemu_printf("%s\n", typename);
+}
+
+void loongarch_cpu_list(void)
+{
+    GSList *list;
+    list = object_class_get_list_sorted(TYPE_LOONGARCH_CPU, false);
+    g_slist_foreach(list, loongarch_cpu_list_entry, NULL);
+    g_slist_free(list);
+}
+
+static void loongarch_cpu_reset(DeviceState *dev)
+{
+    CPUState *cs = CPU(dev);
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(cpu);
+    CPULoongArchState *env = &cpu->env;
+
+    lacc->parent_reset(dev);
+
+    env->fcsr0_mask = FCSR0_M1 | FCSR0_M2 | FCSR0_M3;
+    env->fcsr0 = 0x0;
+
+    int n;
+    /* Set csr registers value after reset */
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATF, 1);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATM, 1);
+
+    env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, FPE, 0);
+    env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, SXE, 0);
+    env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, ASXE, 0);
+    env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, BTE, 0);
+
+    env->CSR_MISC = 0;
+
+    env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, VS, 0);
+    env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, LIE, 0);
+
+    env->CSR_ESTAT = env->CSR_ESTAT & (~MAKE_64BIT_MASK(0, 2));
+    env->CSR_RVACFG = FIELD_DP64(env->CSR_RVACFG, CSR_RVACFG, RBITS, 0);
+    env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0);
+    env->CSR_LLBCTL = FIELD_DP64(env->CSR_LLBCTL, CSR_LLBCTL, KLO, 0);
+    env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 0);
+    env->CSR_MERRCTL = FIELD_DP64(env->CSR_MERRCTL, CSR_MERRCTL, ISMERR, 0);
+
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, TLB_TYPE, 2);
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, MTLB_ENTRY, 63);
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_WAYS, 7);
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_SETS, 8);
+
+    for (n = 0; n < 4; n++) {
+        env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV0, 0);
+        env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV1, 0);
+        env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV2, 0);
+        env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV3, 0);
+    }
+
+    env->pc = 0x1c000000;
+
+    restore_fp_status(env);
+    cs->exception_index = -1;
+}
+
+static void loongarch_cpu_disas_set_info(CPUState *s, disassemble_info *info)
+{
+    info->print_insn = print_insn_loongarch;
+}
+
+static void loongarch_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    CPUState *cs = CPU(dev);
+    LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    loongarch_cpu_register_gdb_regs_for_features(cs);
+
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
+
+    lacc->parent_realize(dev, errp);
+}
+
+static void loongarch_qemu_write(void *opaque, hwaddr addr,
+                                 uint64_t val, unsigned size)
+{
+}
+
+static uint64_t loongarch_qemu_read(void *opaque, hwaddr addr, unsigned size)
+{
+    switch (addr) {
+    case FEATURE_REG:
+        return 1ULL << IOCSRF_MSI | 1ULL << IOCSRF_EXTIOI |
+               1ULL << IOCSRF_CSRIPI;
+    case VENDOR_REG:
+        return 0x6e6f73676e6f6f4cULL; /* "Loongson" */
+    case CPUNAME_REG:
+        return 0x303030354133ULL;     /* "3A5000" */
+    case MISC_FUNC_REG:
+        return 1ULL << IOCSRM_EXTIOI_EN;
+    }
+    return 0ULL;
+}
+
+static const MemoryRegionOps loongarch_qemu_ops = {
+    .read = loongarch_qemu_read,
+    .write = loongarch_qemu_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 8,
+    },
+    .impl = {
+        .min_access_size = 8,
+        .max_access_size = 8,
+    },
+};
+
+static void loongarch_cpu_init(Object *obj)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(obj);
+    CPULoongArchState *env = &cpu->env;
+
+    cpu_set_cpustate_pointers(cpu);
+    qdev_init_gpio_in(DEVICE(cpu), loongarch_cpu_set_irq, N_IRQS);
+    timer_init_ns(&cpu->timer, QEMU_CLOCK_VIRTUAL,
+                  &loongarch_constant_timer_cb, cpu);
+    memory_region_init_io(&env->system_iocsr, OBJECT(cpu), NULL,
+                      env, "iocsr", UINT64_MAX);
+    address_space_init(&env->address_space_iocsr, &env->system_iocsr, "IOCSR");
+    memory_region_init_io(&env->iocsr_mem, OBJECT(cpu), &loongarch_qemu_ops,
+                          NULL, "iocsr_misc", 0x428);
+    memory_region_add_subregion(&env->system_iocsr, 0, &env->iocsr_mem);
+}
+
+static ObjectClass *loongarch_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+    char *typename;
+
+    typename = g_strdup_printf(LOONGARCH_CPU_TYPE_NAME("%s"), cpu_model);
+    oc = object_class_by_name(typename);
+    g_free(typename);
+    return oc;
+}
+
+void loongarch_cpu_dump_state(CPUState *cs, FILE *f, int flags)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+    int i;
+
+    qemu_fprintf(f, " PC=%016" PRIx64 " ", env->pc);
+    qemu_fprintf(f, " FCSR0 0x%08x  fp_status 0x%02x\n", env->fcsr0,
+                 get_float_exception_flags(&env->fp_status));
+
+    /* gpr */
+    for (i = 0; i < 32; i++) {
+        if ((i & 3) == 0) {
+            qemu_fprintf(f, " GPR%02d:", i);
+        }
+        qemu_fprintf(f, " %s %016" PRIx64, regnames[i], env->gpr[i]);
+        if ((i & 3) == 3) {
+            qemu_fprintf(f, "\n");
+        }
+    }
+
+    qemu_fprintf(f, "CRMD=%016" PRIx64 "\n", env->CSR_CRMD);
+    qemu_fprintf(f, "PRMD=%016" PRIx64 "\n", env->CSR_PRMD);
+    qemu_fprintf(f, "EUEN=%016" PRIx64 "\n", env->CSR_EUEN);
+    qemu_fprintf(f, "ESTAT=%016" PRIx64 "\n", env->CSR_ESTAT);
+    qemu_fprintf(f, "ERA=%016" PRIx64 "\n", env->CSR_ERA);
+    qemu_fprintf(f, "BADV=%016" PRIx64 "\n", env->CSR_BADV);
+    qemu_fprintf(f, "BADI=%016" PRIx64 "\n", env->CSR_BADI);
+    qemu_fprintf(f, "EENTRY=%016" PRIx64 "\n", env->CSR_EENTRY);
+    qemu_fprintf(f, "PRCFG1=%016" PRIx64 ", PRCFG2=%016" PRIx64 ","
+                 " PRCFG3=%016" PRIx64 "\n",
+                 env->CSR_PRCFG1, env->CSR_PRCFG3, env->CSR_PRCFG3);
+    qemu_fprintf(f, "TLBRENTRY=%016" PRIx64 "\n", env->CSR_TLBRENTRY);
+    qemu_fprintf(f, "TLBRBADV=%016" PRIx64 "\n", env->CSR_TLBRBADV);
+    qemu_fprintf(f, "TLBRERA=%016" PRIx64 "\n", env->CSR_TLBRERA);
+
+    /* fpr */
+    if (flags & CPU_DUMP_FPU) {
+        for (i = 0; i < 32; i++) {
+            qemu_fprintf(f, " %s %016" PRIx64, fregnames[i], env->fpr[i]);
+            if ((i & 3) == 3) {
+                qemu_fprintf(f, "\n");
+            }
+        }
+    }
+}
+
+#ifdef CONFIG_TCG
+#include "hw/core/tcg-cpu-ops.h"
+
+static struct TCGCPUOps loongarch_tcg_ops = {
+    .initialize = loongarch_translate_init,
+    .synchronize_from_tb = loongarch_cpu_synchronize_from_tb,
+
+    .tlb_fill = loongarch_cpu_tlb_fill,
+    .cpu_exec_interrupt = loongarch_cpu_exec_interrupt,
+    .do_interrupt = loongarch_cpu_do_interrupt,
+    .do_transaction_failed = loongarch_cpu_do_transaction_failed,
+};
+#endif /* CONFIG_TCG */
+
+#include "hw/core/sysemu-cpu-ops.h"
+
+static const struct SysemuCPUOps loongarch_sysemu_ops = {
+    .get_phys_page_debug = loongarch_cpu_get_phys_page_debug,
+};
+
+static void loongarch_cpu_class_init(ObjectClass *c, void *data)
+{
+    LoongArchCPUClass *lacc = LOONGARCH_CPU_CLASS(c);
+    CPUClass *cc = CPU_CLASS(c);
+    DeviceClass *dc = DEVICE_CLASS(c);
+
+    device_class_set_parent_realize(dc, loongarch_cpu_realizefn,
+                                    &lacc->parent_realize);
+    device_class_set_parent_reset(dc, loongarch_cpu_reset, &lacc->parent_reset);
+
+    cc->class_by_name = loongarch_cpu_class_by_name;
+    cc->has_work = loongarch_cpu_has_work;
+    cc->dump_state = loongarch_cpu_dump_state;
+    cc->set_pc = loongarch_cpu_set_pc;
+    dc->vmsd = &vmstate_loongarch_cpu;
+    cc->sysemu_ops = &loongarch_sysemu_ops;
+    cc->disas_set_info = loongarch_cpu_disas_set_info;
+    cc->gdb_read_register = loongarch_cpu_gdb_read_register;
+    cc->gdb_write_register = loongarch_cpu_gdb_write_register;
+    cc->disas_set_info = loongarch_cpu_disas_set_info;
+    cc->gdb_num_core_regs = 34;
+    cc->gdb_core_xml_file = "loongarch-base64.xml";
+    cc->gdb_stop_before_watchpoint = true;
+
+#ifdef CONFIG_TCG
+    cc->tcg_ops = &loongarch_tcg_ops;
+#endif
+}
+
+#define DEFINE_LOONGARCH_CPU_TYPE(model, initfn) \
+    { \
+        .parent = TYPE_LOONGARCH_CPU, \
+        .instance_init = initfn, \
+        .name = LOONGARCH_CPU_TYPE_NAME(model), \
+    }
+
+static const TypeInfo loongarch_cpu_type_infos[] = {
+    {
+        .name = TYPE_LOONGARCH_CPU,
+        .parent = TYPE_CPU,
+        .instance_size = sizeof(LoongArchCPU),
+        .instance_init = loongarch_cpu_init,
+
+        .abstract = true,
+        .class_size = sizeof(LoongArchCPUClass),
+        .class_init = loongarch_cpu_class_init,
+    },
+    DEFINE_LOONGARCH_CPU_TYPE("la464", loongarch_la464_initfn),
+};
+
+DEFINE_TYPES(loongarch_cpu_type_infos)
+
+static void loongarch_cpu_add_definition(gpointer data, gpointer user_data)
+{
+    ObjectClass *oc = data;
+    CpuDefinitionInfoList **cpu_list = user_data;
+    CpuDefinitionInfo *info = g_new0(CpuDefinitionInfo, 1);
+    const char *typename = object_class_get_name(oc);
+
+    info->name = g_strndup(typename,
+                           strlen(typename) - strlen("-" TYPE_LOONGARCH_CPU));
+    info->q_typename = g_strdup(typename);
+
+    QAPI_LIST_PREPEND(*cpu_list, info);
+}
+
+CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
+{
+    CpuDefinitionInfoList *cpu_list = NULL;
+    GSList *list;
+
+    list = object_class_get_list(TYPE_LOONGARCH_CPU, false);
+    g_slist_foreach(list, loongarch_cpu_add_definition, &cpu_list);
+    g_slist_free(list);
+
+    return cpu_list;
+}
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
new file mode 100644
index 0000000..71a5036
--- /dev/null
+++ b/target/loongarch/cpu.h
@@ -0,0 +1,391 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_CPU_H
+#define LOONGARCH_CPU_H
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat-types.h"
+#include "hw/registerfields.h"
+#include "qemu/timer.h"
+#include "exec/memory.h"
+#include "hw/sysbus.h"
+
+#define IOCSRF_TEMP             0
+#define IOCSRF_NODECNT          1
+#define IOCSRF_MSI              2
+#define IOCSRF_EXTIOI           3
+#define IOCSRF_CSRIPI           4
+#define IOCSRF_FREQCSR          5
+#define IOCSRF_FREQSCALE        6
+#define IOCSRF_DVFSV1           7
+#define IOCSRF_GMOD             9
+#define IOCSRF_VM               11
+
+#define FEATURE_REG             0x8
+#define VENDOR_REG              0x10
+#define CPUNAME_REG             0x20
+#define MISC_FUNC_REG           0x420
+#define IOCSRM_EXTIOI_EN        48
+
+#define IOCSR_MEM_SIZE          0x428
+
+#define TCG_GUEST_DEFAULT_MO (0)
+
+#define FCSR0_M1    0x1f         /* FCSR1 mask, Enables */
+#define FCSR0_M2    0x1f1f0000   /* FCSR2 mask, Cause and Flags */
+#define FCSR0_M3    0x300        /* FCSR3 mask, Round Mode */
+#define FCSR0_RM    8            /* Round Mode bit num on fcsr0 */
+
+FIELD(FCSR0, ENABLES, 0, 5)
+FIELD(FCSR0, RM, 8, 2)
+FIELD(FCSR0, FLAGS, 16, 5)
+FIELD(FCSR0, CAUSE, 24, 5)
+
+#define GET_FP_CAUSE(REG)      FIELD_EX32(REG, FCSR0, CAUSE)
+#define SET_FP_CAUSE(REG, V)   FIELD_DP32(REG, FCSR0, CAUSE, V)
+#define GET_FP_ENABLES(REG)    FIELD_EX32(REG, FCSR0, ENABLES)
+#define SET_FP_ENABLES(REG, V) FIELD_DP32(REG, FCSR0, ENABLES, V)
+#define GET_FP_FLAGS(REG)      FIELD_EX32(REG, FCSR0, FLAGS)
+#define SET_FP_FLAGS(REG, V)   FIELD_DP32(REG, FCSR0, FLAGS, V)
+#define UPDATE_FP_FLAGS(REG, V) \
+    do { \
+        (REG) |= FIELD_DP32(0, FCSR0, FLAGS, V); \
+    } while (0)
+
+#define FP_INEXACT        1
+#define FP_UNDERFLOW      2
+#define FP_OVERFLOW       4
+#define FP_DIV0           8
+#define FP_INVALID        16
+
+#define  EXCCODE_EXTERNAL_INT   64   /* plus external interrupt number */
+#define  EXCCODE_INT                 0
+#define  EXCCODE_PIL                 1
+#define  EXCCODE_PIS                 2
+#define  EXCCODE_PIF                 3
+#define  EXCCODE_PME                 4
+#define  EXCCODE_PNR                 5
+#define  EXCCODE_PNX                 6
+#define  EXCCODE_PPI                 7
+#define  EXCCODE_ADEF                8 /* Different exception subcode */
+#define  EXCCODE_ADEM                8
+#define  EXCCODE_ALE                 9
+#define  EXCCODE_BCE                 10
+#define  EXCCODE_SYS                 11
+#define  EXCCODE_BRK                 12
+#define  EXCCODE_INE                 13
+#define  EXCCODE_IPE                 14
+#define  EXCCODE_FPD                 15
+#define  EXCCODE_SXD                 16
+#define  EXCCODE_ASXD                17
+#define  EXCCODE_FPE                 18 /* Different exception subcode */
+#define  EXCCODE_VFPE                18
+#define  EXCCODE_WPEF                19 /* Different exception subcode */
+#define  EXCCODE_WPEM                19
+#define  EXCCODE_BTD                 20
+#define  EXCCODE_BTE                 21
+#define  EXCCODE_DBP                 26 /* Reserved subcode used for debug */
+
+/* cpucfg[0] bits */
+FIELD(CPUCFG0, PRID, 0, 32)
+
+/* cpucfg[1] bits */
+FIELD(CPUCFG1, ARCH, 0, 2)
+FIELD(CPUCFG1, PGMMU, 2, 1)
+FIELD(CPUCFG1, IOCSR, 3, 1)
+FIELD(CPUCFG1, PALEN, 4, 8)
+FIELD(CPUCFG1, VALEN, 12, 8)
+FIELD(CPUCFG1, UAL, 20, 1)
+FIELD(CPUCFG1, RI, 21, 1)
+FIELD(CPUCFG1, EP, 22, 1)
+FIELD(CPUCFG1, RPLV, 23, 1)
+FIELD(CPUCFG1, HP, 24, 1)
+FIELD(CPUCFG1, IOCSR_BRD, 25, 1)
+FIELD(CPUCFG1, MSG_INT, 26, 1)
+
+/* cpucfg[2] bits */
+FIELD(CPUCFG2, FP, 0, 1)
+FIELD(CPUCFG2, FP_SP, 1, 1)
+FIELD(CPUCFG2, FP_DP, 2, 1)
+FIELD(CPUCFG2, FP_VER, 3, 3)
+FIELD(CPUCFG2, LSX, 6, 1)
+FIELD(CPUCFG2, LASX, 7, 1)
+FIELD(CPUCFG2, COMPLEX, 8, 1)
+FIELD(CPUCFG2, CRYPTO, 9, 1)
+FIELD(CPUCFG2, LVZ, 10, 1)
+FIELD(CPUCFG2, LVZ_VER, 11, 3)
+FIELD(CPUCFG2, LLFTP, 14, 1)
+FIELD(CPUCFG2, LLFTP_VER, 15, 3)
+FIELD(CPUCFG2, LBT_X86, 18, 1)
+FIELD(CPUCFG2, LBT_ARM, 19, 1)
+FIELD(CPUCFG2, LBT_MIPS, 20, 1)
+FIELD(CPUCFG2, LSPW, 21, 1)
+FIELD(CPUCFG2, LAM, 22, 1)
+
+/* cpucfg[3] bits */
+FIELD(CPUCFG3, CCDMA, 0, 1)
+FIELD(CPUCFG3, SFB, 1, 1)
+FIELD(CPUCFG3, UCACC, 2, 1)
+FIELD(CPUCFG3, LLEXC, 3, 1)
+FIELD(CPUCFG3, SCDLY, 4, 1)
+FIELD(CPUCFG3, LLDBAR, 5, 1)
+FIELD(CPUCFG3, ITLBHMC, 6, 1)
+FIELD(CPUCFG3, ICHMC, 7, 1)
+FIELD(CPUCFG3, SPW_LVL, 8, 3)
+FIELD(CPUCFG3, SPW_HP_HF, 11, 1)
+FIELD(CPUCFG3, RVA, 12, 1)
+FIELD(CPUCFG3, RVAMAX, 13, 4)
+
+/* cpucfg[4] bits */
+FIELD(CPUCFG4, CC_FREQ, 0, 32)
+
+/* cpucfg[5] bits */
+FIELD(CPUCFG5, CC_MUL, 0, 16)
+FIELD(CPUCFG5, CC_DIV, 16, 16)
+
+/* cpucfg[6] bits */
+FIELD(CPUCFG6, PMP, 0, 1)
+FIELD(CPUCFG6, PMVER, 1, 3)
+FIELD(CPUCFG6, PMNUM, 4, 4)
+FIELD(CPUCFG6, PMBITS, 8, 6)
+FIELD(CPUCFG6, UPM, 14, 1)
+
+/* cpucfg[16] bits */
+FIELD(CPUCFG16, L1_IUPRE, 0, 1)
+FIELD(CPUCFG16, L1_IUUNIFY, 1, 1)
+FIELD(CPUCFG16, L1_DPRE, 2, 1)
+FIELD(CPUCFG16, L2_IUPRE, 3, 1)
+FIELD(CPUCFG16, L2_IUUNIFY, 4, 1)
+FIELD(CPUCFG16, L2_IUPRIV, 5, 1)
+FIELD(CPUCFG16, L2_IUINCL, 6, 1)
+FIELD(CPUCFG16, L2_DPRE, 7, 1)
+FIELD(CPUCFG16, L2_DPRIV, 8, 1)
+FIELD(CPUCFG16, L2_DINCL, 9, 1)
+FIELD(CPUCFG16, L3_IUPRE, 10, 1)
+FIELD(CPUCFG16, L3_IUUNIFY, 11, 1)
+FIELD(CPUCFG16, L3_IUPRIV, 12, 1)
+FIELD(CPUCFG16, L3_IUINCL, 13, 1)
+FIELD(CPUCFG16, L3_DPRE, 14, 1)
+FIELD(CPUCFG16, L3_DPRIV, 15, 1)
+FIELD(CPUCFG16, L3_DINCL, 16, 1)
+
+/* cpucfg[17] bits */
+FIELD(CPUCFG17, L1IU_WAYS, 0, 16)
+FIELD(CPUCFG17, L1IU_SETS, 16, 8)
+FIELD(CPUCFG17, L1IU_SIZE, 24, 7)
+
+/* cpucfg[18] bits */
+FIELD(CPUCFG18, L1D_WAYS, 0, 16)
+FIELD(CPUCFG18, L1D_SETS, 16, 8)
+FIELD(CPUCFG18, L1D_SIZE, 24, 7)
+
+/* cpucfg[19] bits */
+FIELD(CPUCFG19, L2IU_WAYS, 0, 16)
+FIELD(CPUCFG19, L2IU_SETS, 16, 8)
+FIELD(CPUCFG19, L2IU_SIZE, 24, 7)
+
+/* cpucfg[20] bits */
+FIELD(CPUCFG20, L3IU_WAYS, 0, 16)
+FIELD(CPUCFG20, L3IU_SETS, 16, 8)
+FIELD(CPUCFG20, L3IU_SIZE, 24, 7)
+
+/*CSR_CRMD */
+FIELD(CSR_CRMD, PLV, 0, 2)
+FIELD(CSR_CRMD, IE, 2, 1)
+FIELD(CSR_CRMD, DA, 3, 1)
+FIELD(CSR_CRMD, PG, 4, 1)
+FIELD(CSR_CRMD, DATF, 5, 2)
+FIELD(CSR_CRMD, DATM, 7, 2)
+FIELD(CSR_CRMD, WE, 9, 1)
+
+extern const char * const regnames[32];
+extern const char * const fregnames[32];
+
+#define N_IRQS      13
+#define IRQ_TIMER   11
+#define IRQ_IPI     12
+
+#define LOONGARCH_STLB         2048 /* 2048 STLB */
+#define LOONGARCH_MTLB         64   /* 64 MTLB */
+#define LOONGARCH_TLB_MAX      (LOONGARCH_STLB + LOONGARCH_MTLB)
+
+/*
+ * define the ASID PS E VPPN field of TLB
+ */
+FIELD(TLB_MISC, E, 0, 1)
+FIELD(TLB_MISC, ASID, 1, 10)
+FIELD(TLB_MISC, VPPN, 13, 35)
+FIELD(TLB_MISC, PS, 48, 6)
+
+struct LoongArchTLB {
+    uint64_t tlb_misc;
+    /* Fields corresponding to CSR_TLBELO0/1 */
+    uint64_t tlb_entry0;
+    uint64_t tlb_entry1;
+};
+typedef struct LoongArchTLB LoongArchTLB;
+
+typedef struct CPUArchState {
+    uint64_t gpr[32];
+    uint64_t pc;
+
+    uint64_t fpr[32];
+    float_status fp_status;
+    bool cf[8];
+
+    uint32_t fcsr0;
+    uint32_t fcsr0_mask;
+
+    uint32_t cpucfg[21];
+
+    uint64_t lladdr; /* LL virtual address compared against SC */
+    uint64_t llval;
+
+    uint64_t badaddr;
+
+    /* LoongArch CSRs */
+    uint64_t CSR_CRMD;
+    uint64_t CSR_PRMD;
+    uint64_t CSR_EUEN;
+    uint64_t CSR_MISC;
+    uint64_t CSR_ECFG;
+    uint64_t CSR_ESTAT;
+    uint64_t CSR_ERA;
+    uint64_t CSR_BADV;
+    uint64_t CSR_BADI;
+    uint64_t CSR_EENTRY;
+    uint64_t CSR_TLBIDX;
+    uint64_t CSR_TLBEHI;
+    uint64_t CSR_TLBELO0;
+    uint64_t CSR_TLBELO1;
+    uint64_t CSR_ASID;
+    uint64_t CSR_PGDL;
+    uint64_t CSR_PGDH;
+    uint64_t CSR_PGD;
+    uint64_t CSR_PWCL;
+    uint64_t CSR_PWCH;
+    uint64_t CSR_STLBPS;
+    uint64_t CSR_RVACFG;
+    uint64_t CSR_PRCFG1;
+    uint64_t CSR_PRCFG2;
+    uint64_t CSR_PRCFG3;
+    uint64_t CSR_SAVE[16];
+    uint64_t CSR_TID;
+    uint64_t CSR_TCFG;
+    uint64_t CSR_TVAL;
+    uint64_t CSR_CNTC;
+    uint64_t CSR_TICLR;
+    uint64_t CSR_LLBCTL;
+    uint64_t CSR_IMPCTL1;
+    uint64_t CSR_IMPCTL2;
+    uint64_t CSR_TLBRENTRY;
+    uint64_t CSR_TLBRBADV;
+    uint64_t CSR_TLBRERA;
+    uint64_t CSR_TLBRSAVE;
+    uint64_t CSR_TLBRELO0;
+    uint64_t CSR_TLBRELO1;
+    uint64_t CSR_TLBREHI;
+    uint64_t CSR_TLBRPRMD;
+    uint64_t CSR_MERRCTL;
+    uint64_t CSR_MERRINFO1;
+    uint64_t CSR_MERRINFO2;
+    uint64_t CSR_MERRENTRY;
+    uint64_t CSR_MERRERA;
+    uint64_t CSR_MERRSAVE;
+    uint64_t CSR_CTAG;
+    uint64_t CSR_DMW[4];
+    uint64_t CSR_DBG;
+    uint64_t CSR_DERA;
+    uint64_t CSR_DSAVE;
+
+    LoongArchTLB  tlb[LOONGARCH_TLB_MAX];
+
+    AddressSpace address_space_iocsr;
+    MemoryRegion system_iocsr;
+    MemoryRegion iocsr_mem;
+    bool load_elf;
+    uint64_t elf_address;
+} CPULoongArchState;
+
+/**
+ * LoongArchCPU:
+ * @env: #CPULoongArchState
+ *
+ * A LoongArch CPU.
+ */
+struct ArchCPU {
+    /*< private >*/
+    CPUState parent_obj;
+    /*< public >*/
+
+    CPUNegativeOffsetState neg;
+    CPULoongArchState env;
+    QEMUTimer timer;
+};
+
+#define TYPE_LOONGARCH_CPU "loongarch-cpu"
+
+OBJECT_DECLARE_CPU_TYPE(LoongArchCPU, LoongArchCPUClass,
+                        LOONGARCH_CPU)
+
+/**
+ * LoongArchCPUClass:
+ * @parent_realize: The parent class' realize handler.
+ * @parent_reset: The parent class' reset handler.
+ *
+ * A LoongArch CPU model.
+ */
+struct LoongArchCPUClass {
+    /*< private >*/
+    CPUClass parent_class;
+    /*< public >*/
+
+    DeviceRealize parent_realize;
+    DeviceReset parent_reset;
+};
+
+/*
+ * LoongArch CPUs has 4 privilege levels.
+ * 0 for kernel mode, 3 for user mode.
+ * Define an extra index for DA(direct addressing) mode.
+ */
+#define MMU_KERNEL_IDX   0
+#define MMU_USER_IDX     3
+#define MMU_DA_IDX       4
+
+static inline int cpu_mmu_index(CPULoongArchState *env, bool ifetch)
+{
+    uint8_t pg = FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PG);
+
+    if (!pg) {
+        return MMU_DA_IDX;
+    }
+    return FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV);
+}
+
+static inline void cpu_get_tb_cpu_state(CPULoongArchState *env,
+                                        target_ulong *pc,
+                                        target_ulong *cs_base,
+                                        uint32_t *flags)
+{
+    *pc = env->pc;
+    *cs_base = 0;
+    *flags = cpu_mmu_index(env, false);
+}
+
+void loongarch_cpu_list(void);
+
+#define cpu_list loongarch_cpu_list
+
+#include "exec/cpu-all.h"
+
+#define LOONGARCH_CPU_TYPE_SUFFIX "-" TYPE_LOONGARCH_CPU
+#define LOONGARCH_CPU_TYPE_NAME(model) model LOONGARCH_CPU_TYPE_SUFFIX
+#define CPU_RESOLVING_TYPE TYPE_LOONGARCH_CPU
+
+#endif /* LOONGARCH_CPU_H */
diff --git a/target/loongarch/csr_helper.c b/target/loongarch/csr_helper.c
new file mode 100644
index 0000000..24a9389
--- /dev/null
+++ b/target/loongarch/csr_helper.c
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch emulation helpers for CSRs
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "cpu.h"
+#include "internals.h"
+#include "qemu/host-utils.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "hw/irq.h"
+#include "cpu-csr.h"
+#include "tcg/tcg-ldst.h"
+
+target_ulong helper_csrrd_pgd(CPULoongArchState *env)
+{
+    int64_t v;
+
+    if (env->CSR_TLBRERA & 0x1) {
+        v = env->CSR_TLBRBADV;
+    } else {
+        v = env->CSR_BADV;
+    }
+
+    if ((v >> 63) & 0x1) {
+        v = env->CSR_PGDH;
+    } else {
+        v = env->CSR_PGDL;
+    }
+
+    return v;
+}
+
+target_ulong helper_csrrd_tval(CPULoongArchState *env)
+{
+    LoongArchCPU *cpu = env_archcpu(env);
+
+    return cpu_loongarch_get_constant_timer_ticks(cpu);
+}
+
+target_ulong helper_csrwr_estat(CPULoongArchState *env, target_ulong val)
+{
+    int64_t old_v = env->CSR_ESTAT;
+
+    /* Only IS[1:0] can be written */
+    env->CSR_ESTAT = deposit64(env->CSR_ESTAT, 0, 2, val);
+
+    return old_v;
+}
+
+target_ulong helper_csrwr_asid(CPULoongArchState *env, target_ulong val)
+{
+    int64_t old_v = env->CSR_ASID;
+
+    /* Only ASID filed of CSR_ASID can be written */
+    env->CSR_ASID = deposit64(env->CSR_ASID, 0, 10, val);
+    if (old_v != env->CSR_ASID) {
+        tlb_flush(env_cpu(env));
+    }
+    return old_v;
+}
+
+target_ulong helper_csrwr_tcfg(CPULoongArchState *env, target_ulong val)
+{
+    LoongArchCPU *cpu = env_archcpu(env);
+    int64_t old_v = env->CSR_TCFG;
+
+    cpu_loongarch_store_constant_timer_config(cpu, val);
+
+    return old_v;
+}
+
+target_ulong helper_csrwr_ticlr(CPULoongArchState *env, target_ulong val)
+{
+    LoongArchCPU *cpu = env_archcpu(env);
+    int64_t old_v = 0;
+
+    if (val & 0x1) {
+        loongarch_cpu_set_irq(cpu, IRQ_TIMER, 0);
+    }
+    return old_v;
+}
diff --git a/target/loongarch/disas.c b/target/loongarch/disas.c
new file mode 100644
index 0000000..858dfcc
--- /dev/null
+++ b/target/loongarch/disas.c
@@ -0,0 +1,757 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch Disassembler
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited.
+ */
+
+#include "qemu/osdep.h"
+#include "disas/dis-asm.h"
+#include "qemu/bitops.h"
+#include "cpu-csr.h"
+
+typedef struct {
+    disassemble_info *info;
+    uint64_t pc;
+    uint32_t insn;
+} DisasContext;
+
+static inline int plus_1(DisasContext *ctx, int x)
+{
+    return x + 1;
+}
+
+static inline int shl_2(DisasContext *ctx, int x)
+{
+    return x << 2;
+}
+
+#define CSR_NAME(REG) \
+    [LOONGARCH_CSR_##REG] = (#REG)
+
+static const char * const csr_names[] = {
+    CSR_NAME(CRMD),
+    CSR_NAME(PRMD),
+    CSR_NAME(EUEN),
+    CSR_NAME(MISC),
+    CSR_NAME(ECFG),
+    CSR_NAME(ESTAT),
+    CSR_NAME(ERA),
+    CSR_NAME(BADV),
+    CSR_NAME(BADI),
+    CSR_NAME(EENTRY),
+    CSR_NAME(TLBIDX),
+    CSR_NAME(TLBEHI),
+    CSR_NAME(TLBELO0),
+    CSR_NAME(TLBELO1),
+    CSR_NAME(ASID),
+    CSR_NAME(PGDL),
+    CSR_NAME(PGDH),
+    CSR_NAME(PGD),
+    CSR_NAME(PWCL),
+    CSR_NAME(PWCH),
+    CSR_NAME(STLBPS),
+    CSR_NAME(RVACFG),
+    CSR_NAME(CPUID),
+    CSR_NAME(PRCFG1),
+    CSR_NAME(PRCFG2),
+    CSR_NAME(PRCFG3),
+    CSR_NAME(SAVE(0)),
+    CSR_NAME(SAVE(1)),
+    CSR_NAME(SAVE(2)),
+    CSR_NAME(SAVE(3)),
+    CSR_NAME(SAVE(4)),
+    CSR_NAME(SAVE(5)),
+    CSR_NAME(SAVE(6)),
+    CSR_NAME(SAVE(7)),
+    CSR_NAME(SAVE(8)),
+    CSR_NAME(SAVE(9)),
+    CSR_NAME(SAVE(10)),
+    CSR_NAME(SAVE(11)),
+    CSR_NAME(SAVE(12)),
+    CSR_NAME(SAVE(13)),
+    CSR_NAME(SAVE(14)),
+    CSR_NAME(SAVE(15)),
+    CSR_NAME(TID),
+    CSR_NAME(TCFG),
+    CSR_NAME(TVAL),
+    CSR_NAME(CNTC),
+    CSR_NAME(TICLR),
+    CSR_NAME(LLBCTL),
+    CSR_NAME(IMPCTL1),
+    CSR_NAME(IMPCTL2),
+    CSR_NAME(TLBRENTRY),
+    CSR_NAME(TLBRBADV),
+    CSR_NAME(TLBRERA),
+    CSR_NAME(TLBRSAVE),
+    CSR_NAME(TLBRELO0),
+    CSR_NAME(TLBRELO1),
+    CSR_NAME(TLBREHI),
+    CSR_NAME(TLBRPRMD),
+    CSR_NAME(MERRCTL),
+    CSR_NAME(MERRINFO1),
+    CSR_NAME(MERRINFO2),
+    CSR_NAME(MERRENTRY),
+    CSR_NAME(MERRERA),
+    CSR_NAME(MERRSAVE),
+    CSR_NAME(CTAG),
+    CSR_NAME(DMW(0)),
+    CSR_NAME(DMW(1)),
+    CSR_NAME(DMW(2)),
+    CSR_NAME(DMW(3)),
+    CSR_NAME(DBG),
+    CSR_NAME(DERA),
+    CSR_NAME(DSAVE),
+};
+
+static const char *get_csr_name(unsigned num)
+{
+    return ((num < ARRAY_SIZE(csr_names)) && (csr_names[num] != NULL)) ?
+           csr_names[num] : "Undefined CSR";
+}
+
+#define output(C, INSN, FMT, ...)                                   \
+{                                                                   \
+    (C)->info->fprintf_func((C)->info->stream, "%08x   %-9s\t" FMT, \
+                            (C)->insn, INSN, ##__VA_ARGS__);        \
+}
+
+#include "decode-insns.c.inc"
+
+int print_insn_loongarch(bfd_vma memaddr, struct disassemble_info *info)
+{
+    bfd_byte buffer[4];
+    uint32_t insn;
+    int status;
+
+    status = (*info->read_memory_func)(memaddr, buffer, 4, info);
+    if (status != 0) {
+        (*info->memory_error_func)(status, memaddr, info);
+        return -1;
+    }
+    insn = bfd_getl32(buffer);
+    DisasContext ctx = {
+        .info = info,
+        .pc = memaddr,
+        .insn = insn
+    };
+
+    if (!decode(&ctx, insn)) {
+        output(&ctx, "illegal", "");
+    }
+    return 4;
+}
+
+static void output_r_i(DisasContext *ctx, arg_r_i *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, %d", a->rd, a->imm);
+}
+
+static void output_rrr(DisasContext *ctx, arg_rrr *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d, r%d", a->rd, a->rj, a->rk);
+}
+
+static void output_rr_i(DisasContext *ctx, arg_rr_i *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d, %d", a->rd, a->rj, a->imm);
+}
+
+static void output_rrr_sa(DisasContext *ctx, arg_rrr_sa *a,
+                          const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d, r%d, %d", a->rd, a->rj, a->rk, a->sa);
+}
+
+static void output_rr(DisasContext *ctx, arg_rr *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d", a->rd, a->rj);
+}
+
+static void output_rr_ms_ls(DisasContext *ctx, arg_rr_ms_ls *a,
+                          const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d, %d, %d", a->rd, a->rj, a->ms, a->ls);
+}
+
+static void output_hint_r_i(DisasContext *ctx, arg_hint_r_i *a,
+                            const char *mnemonic)
+{
+    output(ctx, mnemonic, "%d, r%d, %d", a->hint, a->rj, a->imm);
+}
+
+static void output_i(DisasContext *ctx, arg_i *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "%d", a->imm);
+}
+
+static void output_rr_jk(DisasContext *ctx, arg_rr_jk *a,
+                         const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d", a->rj, a->rk);
+}
+
+static void output_ff(DisasContext *ctx, arg_ff *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, f%d", a->fd, a->fj);
+}
+
+static void output_fff(DisasContext *ctx, arg_fff *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, f%d, f%d", a->fd, a->fj, a->fk);
+}
+
+static void output_ffff(DisasContext *ctx, arg_ffff *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, f%d, f%d, f%d", a->fd, a->fj, a->fk, a->fa);
+}
+
+static void output_fffc(DisasContext *ctx, arg_fffc *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, f%d, f%d, %d", a->fd, a->fj, a->fk, a->ca);
+}
+
+static void output_fr(DisasContext *ctx, arg_fr *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, r%d", a->fd, a->rj);
+}
+
+static void output_rf(DisasContext *ctx, arg_rf *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, f%d", a->rd, a->fj);
+}
+
+static void output_fcsrd_r(DisasContext *ctx, arg_fcsrd_r *a,
+                           const char *mnemonic)
+{
+    output(ctx, mnemonic, "fcsr%d, r%d", a->fcsrd, a->rj);
+}
+
+static void output_r_fcsrs(DisasContext *ctx, arg_r_fcsrs *a,
+                           const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, fcsr%d", a->rd, a->fcsrs);
+}
+
+static void output_cf(DisasContext *ctx, arg_cf *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "fcc%d, f%d", a->cd, a->fj);
+}
+
+static void output_fc(DisasContext *ctx, arg_fc *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, fcc%d", a->fd, a->cj);
+}
+
+static void output_cr(DisasContext *ctx, arg_cr *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "fcc%d, r%d", a->cd, a->rj);
+}
+
+static void output_rc(DisasContext *ctx, arg_rc *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, fcc%d", a->rd, a->cj);
+}
+
+static void output_frr(DisasContext *ctx, arg_frr *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, r%d, r%d", a->fd, a->rj, a->rk);
+}
+
+static void output_fr_i(DisasContext *ctx, arg_fr_i *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "f%d, r%d, %d", a->fd, a->rj, a->imm);
+}
+
+static void output_r_offs(DisasContext *ctx, arg_r_offs *a,
+                          const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, %d # 0x%" PRIx64, a->rj, a->offs,
+           ctx->pc + a->offs);
+}
+
+static void output_c_offs(DisasContext *ctx, arg_c_offs *a,
+                          const char *mnemonic)
+{
+    output(ctx, mnemonic, "fcc%d, %d # 0x%" PRIx64, a->cj, a->offs,
+           ctx->pc + a->offs);
+}
+
+static void output_offs(DisasContext *ctx, arg_offs *a,
+                        const char *mnemonic)
+{
+    output(ctx, mnemonic, "%d # 0x%" PRIx64, a->offs, ctx->pc + a->offs);
+}
+
+static void output_rr_offs(DisasContext *ctx, arg_rr_offs *a,
+                           const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d, %d # 0x%" PRIx64, a->rj,
+           a->rd, a->offs, ctx->pc + a->offs);
+}
+
+static void output_r_csr(DisasContext *ctx, arg_r_csr *a,
+                         const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, %d # %s", a->rd, a->csr, get_csr_name(a->csr));
+}
+
+static void output_rr_csr(DisasContext *ctx, arg_rr_csr *a,
+                          const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, r%d, %d # %s",
+           a->rd, a->rj, a->csr, get_csr_name(a->csr));
+}
+
+static void output_empty(DisasContext *ctx, arg_empty *a,
+                         const char *mnemonic)
+{
+    output(ctx, mnemonic, "");
+}
+
+static void output_i_rr(DisasContext *ctx, arg_i_rr *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "%d, r%d, r%d", a->imm, a->rj, a->rk);
+}
+
+static void output_cop_r_i(DisasContext *ctx, arg_cop_r_i *a,
+                           const char *mnemonic)
+{
+    output(ctx, mnemonic, "%d, r%d, %d", a->cop, a->rj, a->imm);
+}
+
+static void output_j_i(DisasContext *ctx, arg_j_i *a, const char *mnemonic)
+{
+    output(ctx, mnemonic, "r%d, %d", a->rj, a->imm);
+}
+
+#define INSN(insn, type)                                    \
+static bool trans_##insn(DisasContext *ctx, arg_##type * a) \
+{                                                           \
+    output_##type(ctx, a, #insn);                           \
+    return true;                                            \
+}
+
+INSN(clo_w,        rr)
+INSN(clz_w,        rr)
+INSN(cto_w,        rr)
+INSN(ctz_w,        rr)
+INSN(clo_d,        rr)
+INSN(clz_d,        rr)
+INSN(cto_d,        rr)
+INSN(ctz_d,        rr)
+INSN(revb_2h,      rr)
+INSN(revb_4h,      rr)
+INSN(revb_2w,      rr)
+INSN(revb_d,       rr)
+INSN(revh_2w,      rr)
+INSN(revh_d,       rr)
+INSN(bitrev_4b,    rr)
+INSN(bitrev_8b,    rr)
+INSN(bitrev_w,     rr)
+INSN(bitrev_d,     rr)
+INSN(ext_w_h,      rr)
+INSN(ext_w_b,      rr)
+INSN(rdtimel_w,    rr)
+INSN(rdtimeh_w,    rr)
+INSN(rdtime_d,     rr)
+INSN(cpucfg,       rr)
+INSN(asrtle_d,     rr_jk)
+INSN(asrtgt_d,     rr_jk)
+INSN(alsl_w,       rrr_sa)
+INSN(alsl_wu,      rrr_sa)
+INSN(bytepick_w,   rrr_sa)
+INSN(bytepick_d,   rrr_sa)
+INSN(add_w,        rrr)
+INSN(add_d,        rrr)
+INSN(sub_w,        rrr)
+INSN(sub_d,        rrr)
+INSN(slt,          rrr)
+INSN(sltu,         rrr)
+INSN(maskeqz,      rrr)
+INSN(masknez,      rrr)
+INSN(nor,          rrr)
+INSN(and,          rrr)
+INSN(or,           rrr)
+INSN(xor,          rrr)
+INSN(orn,          rrr)
+INSN(andn,         rrr)
+INSN(sll_w,        rrr)
+INSN(srl_w,        rrr)
+INSN(sra_w,        rrr)
+INSN(sll_d,        rrr)
+INSN(srl_d,        rrr)
+INSN(sra_d,        rrr)
+INSN(rotr_w,       rrr)
+INSN(rotr_d,       rrr)
+INSN(mul_w,        rrr)
+INSN(mulh_w,       rrr)
+INSN(mulh_wu,      rrr)
+INSN(mul_d,        rrr)
+INSN(mulh_d,       rrr)
+INSN(mulh_du,      rrr)
+INSN(mulw_d_w,     rrr)
+INSN(mulw_d_wu,    rrr)
+INSN(div_w,        rrr)
+INSN(mod_w,        rrr)
+INSN(div_wu,       rrr)
+INSN(mod_wu,       rrr)
+INSN(div_d,        rrr)
+INSN(mod_d,        rrr)
+INSN(div_du,       rrr)
+INSN(mod_du,       rrr)
+INSN(crc_w_b_w,    rrr)
+INSN(crc_w_h_w,    rrr)
+INSN(crc_w_w_w,    rrr)
+INSN(crc_w_d_w,    rrr)
+INSN(crcc_w_b_w,   rrr)
+INSN(crcc_w_h_w,   rrr)
+INSN(crcc_w_w_w,   rrr)
+INSN(crcc_w_d_w,   rrr)
+INSN(break,        i)
+INSN(syscall,      i)
+INSN(alsl_d,       rrr_sa)
+INSN(slli_w,       rr_i)
+INSN(slli_d,       rr_i)
+INSN(srli_w,       rr_i)
+INSN(srli_d,       rr_i)
+INSN(srai_w,       rr_i)
+INSN(srai_d,       rr_i)
+INSN(rotri_w,      rr_i)
+INSN(rotri_d,      rr_i)
+INSN(bstrins_w,    rr_ms_ls)
+INSN(bstrpick_w,   rr_ms_ls)
+INSN(bstrins_d,    rr_ms_ls)
+INSN(bstrpick_d,   rr_ms_ls)
+INSN(fadd_s,       fff)
+INSN(fadd_d,       fff)
+INSN(fsub_s,       fff)
+INSN(fsub_d,       fff)
+INSN(fmul_s,       fff)
+INSN(fmul_d,       fff)
+INSN(fdiv_s,       fff)
+INSN(fdiv_d,       fff)
+INSN(fmax_s,       fff)
+INSN(fmax_d,       fff)
+INSN(fmin_s,       fff)
+INSN(fmin_d,       fff)
+INSN(fmaxa_s,      fff)
+INSN(fmaxa_d,      fff)
+INSN(fmina_s,      fff)
+INSN(fmina_d,      fff)
+INSN(fscaleb_s,    fff)
+INSN(fscaleb_d,    fff)
+INSN(fcopysign_s,  fff)
+INSN(fcopysign_d,  fff)
+INSN(fabs_s,       ff)
+INSN(fabs_d,       ff)
+INSN(fneg_s,       ff)
+INSN(fneg_d,       ff)
+INSN(flogb_s,      ff)
+INSN(flogb_d,      ff)
+INSN(fclass_s,     ff)
+INSN(fclass_d,     ff)
+INSN(fsqrt_s,      ff)
+INSN(fsqrt_d,      ff)
+INSN(frecip_s,     ff)
+INSN(frecip_d,     ff)
+INSN(frsqrt_s,     ff)
+INSN(frsqrt_d,     ff)
+INSN(fmov_s,       ff)
+INSN(fmov_d,       ff)
+INSN(movgr2fr_w,   fr)
+INSN(movgr2fr_d,   fr)
+INSN(movgr2frh_w,  fr)
+INSN(movfr2gr_s,   rf)
+INSN(movfr2gr_d,   rf)
+INSN(movfrh2gr_s,  rf)
+INSN(movgr2fcsr,   fcsrd_r)
+INSN(movfcsr2gr,   r_fcsrs)
+INSN(movfr2cf,     cf)
+INSN(movcf2fr,     fc)
+INSN(movgr2cf,     cr)
+INSN(movcf2gr,     rc)
+INSN(fcvt_s_d,     ff)
+INSN(fcvt_d_s,     ff)
+INSN(ftintrm_w_s,  ff)
+INSN(ftintrm_w_d,  ff)
+INSN(ftintrm_l_s,  ff)
+INSN(ftintrm_l_d,  ff)
+INSN(ftintrp_w_s,  ff)
+INSN(ftintrp_w_d,  ff)
+INSN(ftintrp_l_s,  ff)
+INSN(ftintrp_l_d,  ff)
+INSN(ftintrz_w_s,  ff)
+INSN(ftintrz_w_d,  ff)
+INSN(ftintrz_l_s,  ff)
+INSN(ftintrz_l_d,  ff)
+INSN(ftintrne_w_s, ff)
+INSN(ftintrne_w_d, ff)
+INSN(ftintrne_l_s, ff)
+INSN(ftintrne_l_d, ff)
+INSN(ftint_w_s,    ff)
+INSN(ftint_w_d,    ff)
+INSN(ftint_l_s,    ff)
+INSN(ftint_l_d,    ff)
+INSN(ffint_s_w,    ff)
+INSN(ffint_s_l,    ff)
+INSN(ffint_d_w,    ff)
+INSN(ffint_d_l,    ff)
+INSN(frint_s,      ff)
+INSN(frint_d,      ff)
+INSN(slti,         rr_i)
+INSN(sltui,        rr_i)
+INSN(addi_w,       rr_i)
+INSN(addi_d,       rr_i)
+INSN(lu52i_d,      rr_i)
+INSN(andi,         rr_i)
+INSN(ori,          rr_i)
+INSN(xori,         rr_i)
+INSN(fmadd_s,      ffff)
+INSN(fmadd_d,      ffff)
+INSN(fmsub_s,      ffff)
+INSN(fmsub_d,      ffff)
+INSN(fnmadd_s,     ffff)
+INSN(fnmadd_d,     ffff)
+INSN(fnmsub_s,     ffff)
+INSN(fnmsub_d,     ffff)
+INSN(fsel,         fffc)
+INSN(addu16i_d,    rr_i)
+INSN(lu12i_w,      r_i)
+INSN(lu32i_d,      r_i)
+INSN(pcaddi,       r_i)
+INSN(pcalau12i,    r_i)
+INSN(pcaddu12i,    r_i)
+INSN(pcaddu18i,    r_i)
+INSN(ll_w,         rr_i)
+INSN(sc_w,         rr_i)
+INSN(ll_d,         rr_i)
+INSN(sc_d,         rr_i)
+INSN(ldptr_w,      rr_i)
+INSN(stptr_w,      rr_i)
+INSN(ldptr_d,      rr_i)
+INSN(stptr_d,      rr_i)
+INSN(ld_b,         rr_i)
+INSN(ld_h,         rr_i)
+INSN(ld_w,         rr_i)
+INSN(ld_d,         rr_i)
+INSN(st_b,         rr_i)
+INSN(st_h,         rr_i)
+INSN(st_w,         rr_i)
+INSN(st_d,         rr_i)
+INSN(ld_bu,        rr_i)
+INSN(ld_hu,        rr_i)
+INSN(ld_wu,        rr_i)
+INSN(preld,        hint_r_i)
+INSN(fld_s,        fr_i)
+INSN(fst_s,        fr_i)
+INSN(fld_d,        fr_i)
+INSN(fst_d,        fr_i)
+INSN(ldx_b,        rrr)
+INSN(ldx_h,        rrr)
+INSN(ldx_w,        rrr)
+INSN(ldx_d,        rrr)
+INSN(stx_b,        rrr)
+INSN(stx_h,        rrr)
+INSN(stx_w,        rrr)
+INSN(stx_d,        rrr)
+INSN(ldx_bu,       rrr)
+INSN(ldx_hu,       rrr)
+INSN(ldx_wu,       rrr)
+INSN(fldx_s,       frr)
+INSN(fldx_d,       frr)
+INSN(fstx_s,       frr)
+INSN(fstx_d,       frr)
+INSN(amswap_w,     rrr)
+INSN(amswap_d,     rrr)
+INSN(amadd_w,      rrr)
+INSN(amadd_d,      rrr)
+INSN(amand_w,      rrr)
+INSN(amand_d,      rrr)
+INSN(amor_w,       rrr)
+INSN(amor_d,       rrr)
+INSN(amxor_w,      rrr)
+INSN(amxor_d,      rrr)
+INSN(ammax_w,      rrr)
+INSN(ammax_d,      rrr)
+INSN(ammin_w,      rrr)
+INSN(ammin_d,      rrr)
+INSN(ammax_wu,     rrr)
+INSN(ammax_du,     rrr)
+INSN(ammin_wu,     rrr)
+INSN(ammin_du,     rrr)
+INSN(amswap_db_w,  rrr)
+INSN(amswap_db_d,  rrr)
+INSN(amadd_db_w,   rrr)
+INSN(amadd_db_d,   rrr)
+INSN(amand_db_w,   rrr)
+INSN(amand_db_d,   rrr)
+INSN(amor_db_w,    rrr)
+INSN(amor_db_d,    rrr)
+INSN(amxor_db_w,   rrr)
+INSN(amxor_db_d,   rrr)
+INSN(ammax_db_w,   rrr)
+INSN(ammax_db_d,   rrr)
+INSN(ammin_db_w,   rrr)
+INSN(ammin_db_d,   rrr)
+INSN(ammax_db_wu,  rrr)
+INSN(ammax_db_du,  rrr)
+INSN(ammin_db_wu,  rrr)
+INSN(ammin_db_du,  rrr)
+INSN(dbar,         i)
+INSN(ibar,         i)
+INSN(fldgt_s,      frr)
+INSN(fldgt_d,      frr)
+INSN(fldle_s,      frr)
+INSN(fldle_d,      frr)
+INSN(fstgt_s,      frr)
+INSN(fstgt_d,      frr)
+INSN(fstle_s,      frr)
+INSN(fstle_d,      frr)
+INSN(ldgt_b,       rrr)
+INSN(ldgt_h,       rrr)
+INSN(ldgt_w,       rrr)
+INSN(ldgt_d,       rrr)
+INSN(ldle_b,       rrr)
+INSN(ldle_h,       rrr)
+INSN(ldle_w,       rrr)
+INSN(ldle_d,       rrr)
+INSN(stgt_b,       rrr)
+INSN(stgt_h,       rrr)
+INSN(stgt_w,       rrr)
+INSN(stgt_d,       rrr)
+INSN(stle_b,       rrr)
+INSN(stle_h,       rrr)
+INSN(stle_w,       rrr)
+INSN(stle_d,       rrr)
+INSN(beqz,         r_offs)
+INSN(bnez,         r_offs)
+INSN(bceqz,        c_offs)
+INSN(bcnez,        c_offs)
+INSN(jirl,         rr_offs)
+INSN(b,            offs)
+INSN(bl,           offs)
+INSN(beq,          rr_offs)
+INSN(bne,          rr_offs)
+INSN(blt,          rr_offs)
+INSN(bge,          rr_offs)
+INSN(bltu,         rr_offs)
+INSN(bgeu,         rr_offs)
+INSN(csrrd,        r_csr)
+INSN(csrwr,        r_csr)
+INSN(csrxchg,      rr_csr)
+INSN(iocsrrd_b,    rr)
+INSN(iocsrrd_h,    rr)
+INSN(iocsrrd_w,    rr)
+INSN(iocsrrd_d,    rr)
+INSN(iocsrwr_b,    rr)
+INSN(iocsrwr_h,    rr)
+INSN(iocsrwr_w,    rr)
+INSN(iocsrwr_d,    rr)
+INSN(tlbsrch,      empty)
+INSN(tlbrd,        empty)
+INSN(tlbwr,        empty)
+INSN(tlbfill,      empty)
+INSN(tlbclr,       empty)
+INSN(tlbflush,     empty)
+INSN(invtlb,       i_rr)
+INSN(cacop,        cop_r_i)
+INSN(lddir,        rr_i)
+INSN(ldpte,        j_i)
+INSN(ertn,         empty)
+INSN(idle,         i)
+INSN(dbcl,         i)
+
+#define output_fcmp(C, PREFIX, SUFFIX)                                         \
+{                                                                              \
+    (C)->info->fprintf_func((C)->info->stream, "%08x   %s%s\tfcc%d, f%d, f%d", \
+                            (C)->insn, PREFIX, SUFFIX, a->cd,                  \
+                            a->fj, a->fk);                                     \
+}
+
+static bool output_cff_fcond(DisasContext *ctx, arg_cff_fcond * a,
+                               const char *suffix)
+{
+    bool ret = true;
+    switch (a->fcond) {
+    case 0x0:
+        output_fcmp(ctx, "fcmp_caf_", suffix);
+        break;
+    case 0x1:
+        output_fcmp(ctx, "fcmp_saf_", suffix);
+        break;
+    case 0x2:
+        output_fcmp(ctx, "fcmp_clt_", suffix);
+        break;
+    case 0x3:
+        output_fcmp(ctx, "fcmp_slt_", suffix);
+        break;
+    case 0x4:
+        output_fcmp(ctx, "fcmp_ceq_", suffix);
+        break;
+    case 0x5:
+        output_fcmp(ctx, "fcmp_seq_", suffix);
+        break;
+    case 0x6:
+        output_fcmp(ctx, "fcmp_cle_", suffix);
+        break;
+    case 0x7:
+        output_fcmp(ctx, "fcmp_sle_", suffix);
+        break;
+    case 0x8:
+        output_fcmp(ctx, "fcmp_cun_", suffix);
+        break;
+    case 0x9:
+        output_fcmp(ctx, "fcmp_sun_", suffix);
+        break;
+    case 0xA:
+        output_fcmp(ctx, "fcmp_cult_", suffix);
+        break;
+    case 0xB:
+        output_fcmp(ctx, "fcmp_sult_", suffix);
+        break;
+    case 0xC:
+        output_fcmp(ctx, "fcmp_cueq_", suffix);
+        break;
+    case 0xD:
+        output_fcmp(ctx, "fcmp_sueq_", suffix);
+        break;
+    case 0xE:
+        output_fcmp(ctx, "fcmp_cule_", suffix);
+        break;
+    case 0xF:
+        output_fcmp(ctx, "fcmp_sule_", suffix);
+        break;
+    case 0x10:
+        output_fcmp(ctx, "fcmp_cne_", suffix);
+        break;
+    case 0x11:
+        output_fcmp(ctx, "fcmp_sne_", suffix);
+        break;
+    case 0x14:
+        output_fcmp(ctx, "fcmp_cor_", suffix);
+        break;
+    case 0x15:
+        output_fcmp(ctx, "fcmp_sor_", suffix);
+        break;
+    case 0x18:
+        output_fcmp(ctx, "fcmp_cune_", suffix);
+        break;
+    case 0x19:
+        output_fcmp(ctx, "fcmp_sune_", suffix);
+        break;
+    default:
+        ret = false;
+    }
+    return ret;
+}
+
+#define FCMP_INSN(suffix)                               \
+static bool trans_fcmp_cond_##suffix(DisasContext *ctx, \
+                                     arg_cff_fcond * a) \
+{                                                       \
+    return output_cff_fcond(ctx, a, #suffix);           \
+}
+
+FCMP_INSN(s)
+FCMP_INSN(d)
diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c
new file mode 100644
index 0000000..3d0cb8d
--- /dev/null
+++ b/target/loongarch/fpu_helper.c
@@ -0,0 +1,862 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch float point emulation helpers for QEMU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "fpu/softfloat.h"
+#include "internals.h"
+
+#define FLOAT_TO_INT32_OVERFLOW 0x7fffffff
+#define FLOAT_TO_INT64_OVERFLOW 0x7fffffffffffffffULL
+
+static inline uint64_t nanbox_s(float32 fp)
+{
+    return fp | MAKE_64BIT_MASK(32, 32);
+}
+
+/* Convert loongarch rounding mode in fcsr0 to IEEE library */
+static const FloatRoundMode ieee_rm[4] = {
+    float_round_nearest_even,
+    float_round_to_zero,
+    float_round_up,
+    float_round_down
+};
+
+void restore_fp_status(CPULoongArchState *env)
+{
+    set_float_rounding_mode(ieee_rm[(env->fcsr0 >> FCSR0_RM) & 0x3],
+                            &env->fp_status);
+    set_flush_to_zero(0, &env->fp_status);
+}
+
+static int ieee_ex_to_loongarch(int xcpt)
+{
+    int ret = 0;
+    if (xcpt & float_flag_invalid) {
+        ret |= FP_INVALID;
+    }
+    if (xcpt & float_flag_overflow) {
+        ret |= FP_OVERFLOW;
+    }
+    if (xcpt & float_flag_underflow) {
+        ret |= FP_UNDERFLOW;
+    }
+    if (xcpt & float_flag_divbyzero) {
+        ret |= FP_DIV0;
+    }
+    if (xcpt & float_flag_inexact) {
+        ret |= FP_INEXACT;
+    }
+    return ret;
+}
+
+static void update_fcsr0_mask(CPULoongArchState *env, uintptr_t pc, int mask)
+{
+    int flags = get_float_exception_flags(&env->fp_status);
+
+    set_float_exception_flags(0, &env->fp_status);
+
+    flags &= ~mask;
+
+    if (!flags) {
+        SET_FP_CAUSE(env->fcsr0, flags);
+        return;
+    } else {
+        flags = ieee_ex_to_loongarch(flags);
+        SET_FP_CAUSE(env->fcsr0, flags);
+    }
+
+    if (GET_FP_ENABLES(env->fcsr0) & flags) {
+        do_raise_exception(env, EXCCODE_FPE, pc);
+    } else {
+        UPDATE_FP_FLAGS(env->fcsr0, flags);
+    }
+}
+
+static void update_fcsr0(CPULoongArchState *env, uintptr_t pc)
+{
+    update_fcsr0_mask(env, pc, 0);
+}
+
+uint64_t helper_fadd_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_add((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fadd_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_add(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fsub_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_sub((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fsub_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_sub(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmul_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_mul((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmul_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_mul(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fdiv_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_div((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fdiv_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_div(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmax_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_maxnum((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmax_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_maxnum(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmin_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_minnum((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmin_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_minnum(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmaxa_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_maxnummag((uint32_t)fj,
+                                    (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmaxa_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_maxnummag(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmina_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_minnummag((uint32_t)fj,
+                                    (uint32_t)fk, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmina_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+
+    fd = float64_minnummag(fj, fk, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fscaleb_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+    int32_t n = (int32_t)fk;
+
+    fd = nanbox_s(float32_scalbn((uint32_t)fj,
+                                 n >  0x200 ?  0x200 :
+                                 n < -0x200 ? -0x200 : n,
+                                 &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fscaleb_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+    uint64_t fd;
+    int64_t n = (int64_t)fk;
+
+    fd = float64_scalbn(fj,
+                        n >  0x1000 ?  0x1000 :
+                        n < -0x1000 ? -0x1000 : n,
+                        &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fsqrt_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_sqrt((uint32_t)fj, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fsqrt_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = float64_sqrt(fj, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_frecip_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_div(float32_one, (uint32_t)fj, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_frecip_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = float64_div(float64_one, fj, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_frsqrt_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    uint32_t fp;
+
+    fp = float32_sqrt((uint32_t)fj, &env->fp_status);
+    fd = nanbox_s(float32_div(float32_one, fp, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_frsqrt_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fp, fd;
+
+    fp = float64_sqrt(fj, &env->fp_status);
+    fd = float64_div(float64_one, fp, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_flogb_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    uint32_t fp;
+    float_status *status = &env->fp_status;
+    FloatRoundMode old_mode = get_float_rounding_mode(status);
+
+    set_float_rounding_mode(float_round_down, status);
+    fp = float32_log2((uint32_t)fj, status);
+    fd = nanbox_s(float32_round_to_int(fp, status));
+    set_float_rounding_mode(old_mode, status);
+    update_fcsr0_mask(env, GETPC(), float_flag_inexact);
+    return fd;
+}
+
+uint64_t helper_flogb_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    float_status *status = &env->fp_status;
+    FloatRoundMode old_mode = get_float_rounding_mode(status);
+
+    set_float_rounding_mode(float_round_down, status);
+    fd = float64_log2(fj, status);
+    fd = float64_round_to_int(fd, status);
+    set_float_rounding_mode(old_mode, status);
+    update_fcsr0_mask(env, GETPC(), float_flag_inexact);
+    return fd;
+}
+
+uint64_t helper_fclass_s(CPULoongArchState *env, uint64_t fj)
+{
+    float32 f = fj;
+    bool sign = float32_is_neg(f);
+
+    if (float32_is_infinity(f)) {
+        return sign ? 1 << 2 : 1 << 6;
+    } else if (float32_is_zero(f)) {
+        return sign ? 1 << 5 : 1 << 9;
+    } else if (float32_is_zero_or_denormal(f)) {
+        return sign ? 1 << 4 : 1 << 8;
+    } else if (float32_is_any_nan(f)) {
+        float_status s = { }; /* for snan_bit_is_one */
+        return float32_is_quiet_nan(f, &s) ? 1 << 1 : 1 << 0;
+    } else {
+        return sign ? 1 << 3 : 1 << 7;
+    }
+}
+
+uint64_t helper_fclass_d(CPULoongArchState *env, uint64_t fj)
+{
+    float64 f = fj;
+    bool sign = float64_is_neg(f);
+
+    if (float64_is_infinity(f)) {
+        return sign ? 1 << 2 : 1 << 6;
+    } else if (float64_is_zero(f)) {
+        return sign ? 1 << 5 : 1 << 9;
+    } else if (float64_is_zero_or_denormal(f)) {
+        return sign ? 1 << 4 : 1 << 8;
+    } else if (float64_is_any_nan(f)) {
+        float_status s = { }; /* for snan_bit_is_one */
+        return float64_is_quiet_nan(f, &s) ? 1 << 1 : 1 << 0;
+    } else {
+        return sign ? 1 << 3 : 1 << 7;
+    }
+}
+
+uint64_t helper_fmuladd_s(CPULoongArchState *env, uint64_t fj,
+                          uint64_t fk, uint64_t fa, uint32_t flag)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float32_muladd((uint32_t)fj, (uint32_t)fk,
+                                 (uint32_t)fa, flag, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fmuladd_d(CPULoongArchState *env, uint64_t fj,
+                          uint64_t fk, uint64_t fa, uint32_t flag)
+{
+    uint64_t fd;
+
+    fd = float64_muladd(fj, fk, fa, flag, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+static uint64_t fcmp_common(CPULoongArchState *env, FloatRelation cmp,
+                            uint32_t flags)
+{
+    bool ret;
+
+    switch (cmp) {
+    case float_relation_less:
+        ret = (flags & FCMP_LT);
+        break;
+    case float_relation_equal:
+        ret = (flags & FCMP_EQ);
+        break;
+    case float_relation_greater:
+        ret = (flags & FCMP_GT);
+        break;
+    case float_relation_unordered:
+        ret = (flags & FCMP_UN);
+        break;
+    default:
+        g_assert_not_reached();
+    }
+    update_fcsr0(env, GETPC());
+
+    return ret;
+}
+
+/* fcmp_cXXX_s */
+uint64_t helper_fcmp_c_s(CPULoongArchState *env, uint64_t fj,
+                         uint64_t fk, uint32_t flags)
+{
+    FloatRelation cmp = float32_compare_quiet((uint32_t)fj,
+                                              (uint32_t)fk, &env->fp_status);
+    return fcmp_common(env, cmp, flags);
+}
+
+/* fcmp_sXXX_s */
+uint64_t helper_fcmp_s_s(CPULoongArchState *env, uint64_t fj,
+                         uint64_t fk, uint32_t flags)
+{
+    FloatRelation cmp = float32_compare((uint32_t)fj,
+                                        (uint32_t)fk, &env->fp_status);
+    return fcmp_common(env, cmp, flags);
+}
+
+/* fcmp_cXXX_d */
+uint64_t helper_fcmp_c_d(CPULoongArchState *env, uint64_t fj,
+                         uint64_t fk, uint32_t flags)
+{
+    FloatRelation cmp = float64_compare_quiet(fj, fk, &env->fp_status);
+    return fcmp_common(env, cmp, flags);
+}
+
+/* fcmp_sXXX_d */
+uint64_t helper_fcmp_s_d(CPULoongArchState *env, uint64_t fj,
+                         uint64_t fk, uint32_t flags)
+{
+    FloatRelation cmp = float64_compare(fj, fk, &env->fp_status);
+    return fcmp_common(env, cmp, flags);
+}
+
+/* floating point conversion */
+uint64_t helper_fcvt_s_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(float64_to_float32(fj, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_fcvt_d_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = float32_to_float64((uint32_t)fj, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ffint_s_w(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(int32_to_float32((int32_t)fj, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ffint_s_l(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = nanbox_s(int64_to_float32(fj, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ffint_d_w(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = int32_to_float64((int32_t)fj, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ffint_d_l(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = int64_to_float64(fj, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_frint_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = (uint64_t)(float32_round_to_int((uint32_t)fj, &env->fp_status));
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_frint_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = float64_round_to_int(fj, &env->fp_status);
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrm_l_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_down, &env->fp_status);
+    fd = float64_to_int64(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrm_l_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_down, &env->fp_status);
+    fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrm_w_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_down, &env->fp_status);
+    fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrm_w_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_down, &env->fp_status);
+    fd = (uint64_t)float32_to_int32((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrp_l_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_up, &env->fp_status);
+    fd = float64_to_int64(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrp_l_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_up, &env->fp_status);
+    fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrp_w_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_up, &env->fp_status);
+    fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrp_w_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_up, &env->fp_status);
+    fd = (uint64_t)float32_to_int32((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrz_l_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    fd = float64_to_int64_round_to_zero(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrz_l_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    fd = float32_to_int64_round_to_zero((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrz_w_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    fd = (uint64_t)float64_to_int32_round_to_zero(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrz_w_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint32_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    fd = float32_to_int32_round_to_zero((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return (uint64_t)fd;
+}
+
+uint64_t helper_ftintrne_l_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+    fd = float64_to_int64(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrne_l_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+    fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrne_w_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+    fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftintrne_w_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint32_t fd;
+    FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+    set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+    fd = float32_to_int32((uint32_t)fj, &env->fp_status);
+    set_float_rounding_mode(old_mode, &env->fp_status);
+
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return (uint64_t)fd;
+}
+
+uint64_t helper_ftint_l_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = float64_to_int64(fj, &env->fp_status);
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftint_l_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+    if (get_float_exception_flags(&env->fp_status) &
+        (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT64_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftint_w_s(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = (uint64_t)float32_to_int32((uint32_t)fj, &env->fp_status);
+    if (get_float_exception_flags(&env->fp_status)
+        & (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+uint64_t helper_ftint_w_d(CPULoongArchState *env, uint64_t fj)
+{
+    uint64_t fd;
+
+    fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+    if (get_float_exception_flags(&env->fp_status)
+        & (float_flag_invalid | float_flag_overflow)) {
+        fd = FLOAT_TO_INT32_OVERFLOW;
+    }
+    update_fcsr0(env, GETPC());
+    return fd;
+}
+
+void helper_set_rounding_mode(CPULoongArchState *env, uint32_t fcsr0)
+{
+    set_float_rounding_mode(ieee_rm[(fcsr0 >> FCSR0_RM) & 0x3],
+                            &env->fp_status);
+}
diff --git a/target/loongarch/gdbstub.c b/target/loongarch/gdbstub.c
new file mode 100644
index 0000000..0c48834
--- /dev/null
+++ b/target/loongarch/gdbstub.c
@@ -0,0 +1,81 @@
+/*
+ * LOONGARCH gdb server stub
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "internals.h"
+#include "exec/gdbstub.h"
+
+int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+
+    if (0 <= n && n < 32) {
+        return gdb_get_regl(mem_buf, env->gpr[n]);
+    } else if (n == 32) {
+        return gdb_get_regl(mem_buf, env->pc);
+    } else if (n == 33) {
+        return gdb_get_regl(mem_buf, env->badaddr);
+    }
+    return 0;
+}
+
+int loongarch_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+    target_ulong tmp = ldtul_p(mem_buf);
+    int length = 0;
+
+    if (0 <= n && n < 32) {
+        env->gpr[n] = tmp;
+        length = sizeof(target_ulong);
+    } else if (n == 32) {
+        env->pc = tmp;
+        length = sizeof(target_ulong);
+    }
+    return length;
+}
+
+static int loongarch_gdb_get_fpu(CPULoongArchState *env,
+                                 GByteArray *mem_buf, int n)
+{
+    if (0 <= n && n < 32) {
+        return gdb_get_reg64(mem_buf, env->fpr[n]);
+    } else if (32 <= n && n < 40) {
+        return gdb_get_reg8(mem_buf, env->cf[n - 32]);
+    } else if (n == 40) {
+        return gdb_get_reg32(mem_buf, env->fcsr0);
+    }
+    return 0;
+}
+
+static int loongarch_gdb_set_fpu(CPULoongArchState *env,
+                                 uint8_t *mem_buf, int n)
+{
+    int length = 0;
+
+    if (0 <= n && n < 32) {
+        env->fpr[n] = ldq_p(mem_buf);
+        length = 8;
+    } else if (32 <= n && n < 40) {
+        env->cf[n - 32] = ldub_p(mem_buf);
+        length = 1;
+    } else if (n == 40) {
+        env->fcsr0 = ldl_p(mem_buf);
+        length = 4;
+    }
+    return length;
+}
+
+void loongarch_cpu_register_gdb_regs_for_features(CPUState *cs)
+{
+    gdb_register_coprocessor(cs, loongarch_gdb_get_fpu, loongarch_gdb_set_fpu,
+                             41, "loongarch-fpu64.xml", 0);
+}
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
new file mode 100644
index 0000000..85c11a6
--- /dev/null
+++ b/target/loongarch/helper.h
@@ -0,0 +1,130 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+DEF_HELPER_2(raise_exception, noreturn, env, i32)
+
+DEF_HELPER_FLAGS_1(bitrev_w, TCG_CALL_NO_RWG_SE, tl, tl)
+DEF_HELPER_FLAGS_1(bitrev_d, TCG_CALL_NO_RWG_SE, tl, tl)
+DEF_HELPER_FLAGS_1(bitswap, TCG_CALL_NO_RWG_SE, tl, tl)
+
+DEF_HELPER_FLAGS_3(asrtle_d, TCG_CALL_NO_WG, void, env, tl, tl)
+DEF_HELPER_FLAGS_3(asrtgt_d, TCG_CALL_NO_WG, void, env, tl, tl)
+
+DEF_HELPER_FLAGS_3(crc32, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl)
+DEF_HELPER_FLAGS_3(crc32c, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl)
+DEF_HELPER_FLAGS_2(cpucfg, TCG_CALL_NO_RWG_SE, tl, env, tl)
+
+/* Floating-point helper */
+DEF_HELPER_FLAGS_3(fadd_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fadd_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fsub_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fsub_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmul_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmul_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fdiv_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fdiv_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmax_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmax_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmin_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmin_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmaxa_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmaxa_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmina_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fmina_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+
+DEF_HELPER_FLAGS_5(fmuladd_s, TCG_CALL_NO_WG, i64, env, i64, i64, i64, i32)
+DEF_HELPER_FLAGS_5(fmuladd_d, TCG_CALL_NO_WG, i64, env, i64, i64, i64, i32)
+
+DEF_HELPER_FLAGS_3(fscaleb_s, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(fscaleb_d, TCG_CALL_NO_WG, i64, env, i64, i64)
+
+DEF_HELPER_FLAGS_2(flogb_s, TCG_CALL_NO_WG, i64, env, i64)
+DEF_HELPER_FLAGS_2(flogb_d, TCG_CALL_NO_WG, i64, env, i64)
+
+DEF_HELPER_FLAGS_2(fsqrt_s, TCG_CALL_NO_WG, i64, env, i64)
+DEF_HELPER_FLAGS_2(fsqrt_d, TCG_CALL_NO_WG, i64, env, i64)
+DEF_HELPER_FLAGS_2(frsqrt_s, TCG_CALL_NO_WG, i64, env, i64)
+DEF_HELPER_FLAGS_2(frsqrt_d, TCG_CALL_NO_WG, i64, env, i64)
+DEF_HELPER_FLAGS_2(frecip_s, TCG_CALL_NO_WG, i64, env, i64)
+DEF_HELPER_FLAGS_2(frecip_d, TCG_CALL_NO_WG, i64, env, i64)
+
+DEF_HELPER_FLAGS_2(fclass_s, TCG_CALL_NO_RWG_SE, i64, env, i64)
+DEF_HELPER_FLAGS_2(fclass_d, TCG_CALL_NO_RWG_SE, i64, env, i64)
+
+/* fcmp.cXXX.s */
+DEF_HELPER_4(fcmp_c_s, i64, env, i64, i64, i32)
+/* fcmp.sXXX.s */
+DEF_HELPER_4(fcmp_s_s, i64, env, i64, i64, i32)
+/* fcmp.cXXX.d */
+DEF_HELPER_4(fcmp_c_d, i64, env, i64, i64, i32)
+/* fcmp.sXXX.d */
+DEF_HELPER_4(fcmp_s_d, i64, env, i64, i64, i32)
+
+DEF_HELPER_2(fcvt_d_s, i64, env, i64)
+DEF_HELPER_2(fcvt_s_d, i64, env, i64)
+DEF_HELPER_2(ffint_d_w, i64, env, i64)
+DEF_HELPER_2(ffint_d_l, i64, env, i64)
+DEF_HELPER_2(ffint_s_w, i64, env, i64)
+DEF_HELPER_2(ffint_s_l, i64, env, i64)
+DEF_HELPER_2(ftintrm_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrm_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrm_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrm_w_d, i64, env, i64)
+DEF_HELPER_2(ftintrp_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrp_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrp_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrp_w_d, i64, env, i64)
+DEF_HELPER_2(ftintrz_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrz_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrz_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrz_w_d, i64, env, i64)
+DEF_HELPER_2(ftintrne_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrne_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrne_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrne_w_d, i64, env, i64)
+DEF_HELPER_2(ftint_l_s, i64, env, i64)
+DEF_HELPER_2(ftint_l_d, i64, env, i64)
+DEF_HELPER_2(ftint_w_s, i64, env, i64)
+DEF_HELPER_2(ftint_w_d, i64, env, i64)
+DEF_HELPER_2(frint_s, i64, env, i64)
+DEF_HELPER_2(frint_d, i64, env, i64)
+
+DEF_HELPER_FLAGS_2(set_rounding_mode, TCG_CALL_NO_RWG, void, env, i32)
+
+DEF_HELPER_1(rdtime_d, i64, env)
+
+/* CSRs helper */
+DEF_HELPER_1(csrrd_pgd, i64, env)
+DEF_HELPER_1(csrrd_tval, i64, env)
+DEF_HELPER_2(csrwr_estat, i64, env, tl)
+DEF_HELPER_2(csrwr_asid, i64, env, tl)
+DEF_HELPER_2(csrwr_tcfg, i64, env, tl)
+DEF_HELPER_2(csrwr_ticlr, i64, env, tl)
+DEF_HELPER_2(iocsrrd_b, i64, env, tl)
+DEF_HELPER_2(iocsrrd_h, i64, env, tl)
+DEF_HELPER_2(iocsrrd_w, i64, env, tl)
+DEF_HELPER_2(iocsrrd_d, i64, env, tl)
+DEF_HELPER_3(iocsrwr_b, void, env, tl, tl)
+DEF_HELPER_3(iocsrwr_h, void, env, tl, tl)
+DEF_HELPER_3(iocsrwr_w, void, env, tl, tl)
+DEF_HELPER_3(iocsrwr_d, void, env, tl, tl)
+
+/* TLB helper */
+DEF_HELPER_1(tlbwr, void, env)
+DEF_HELPER_1(tlbfill, void, env)
+DEF_HELPER_1(tlbsrch, void, env)
+DEF_HELPER_1(tlbrd, void, env)
+DEF_HELPER_1(tlbclr, void, env)
+DEF_HELPER_1(tlbflush, void, env)
+DEF_HELPER_1(invtlb_all, void, env)
+DEF_HELPER_2(invtlb_all_g, void, env, i32)
+DEF_HELPER_2(invtlb_all_asid, void, env, tl)
+DEF_HELPER_3(invtlb_page_asid, void, env, tl, tl)
+DEF_HELPER_3(invtlb_page_asid_or_g, void, env, tl, tl)
+
+DEF_HELPER_4(lddir, tl, env, tl, tl, i32)
+DEF_HELPER_4(ldpte, void, env, tl, tl, i32)
+DEF_HELPER_1(ertn, void, env)
+DEF_HELPER_1(idle, void, env)
diff --git a/target/loongarch/insn_trans/trans_arith.c.inc b/target/loongarch/insn_trans/trans_arith.c.inc
new file mode 100644
index 0000000..8e45ead
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_arith.c.inc
@@ -0,0 +1,304 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_rrr(DisasContext *ctx, arg_rrr *a,
+                    DisasExtend src1_ext, DisasExtend src2_ext,
+                    DisasExtend dst_ext, void (*func)(TCGv, TCGv, TCGv))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+    TCGv src1 = gpr_src(ctx, a->rj, src1_ext);
+    TCGv src2 = gpr_src(ctx, a->rk, src2_ext);
+
+    func(dest, src1, src2);
+    gen_set_gpr(a->rd, dest, dst_ext);
+
+    return true;
+}
+
+static bool gen_rri_v(DisasContext *ctx, arg_rr_i *a,
+                      DisasExtend src_ext, DisasExtend dst_ext,
+                      void (*func)(TCGv, TCGv, TCGv))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+    TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+    TCGv src2 = tcg_constant_tl(a->imm);
+
+    func(dest, src1, src2);
+    gen_set_gpr(a->rd, dest, dst_ext);
+
+    return true;
+}
+
+static bool gen_rri_c(DisasContext *ctx, arg_rr_i *a,
+                      DisasExtend src_ext, DisasExtend dst_ext,
+                      void (*func)(TCGv, TCGv, target_long))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+    TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+
+    func(dest, src1, a->imm);
+    gen_set_gpr(a->rd, dest, dst_ext);
+
+    return true;
+}
+
+static bool gen_rrr_sa(DisasContext *ctx, arg_rrr_sa *a,
+                       DisasExtend src_ext, DisasExtend dst_ext,
+                       void (*func)(TCGv, TCGv, TCGv, target_long))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+    TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+    TCGv src2 = gpr_src(ctx, a->rk, src_ext);
+
+    func(dest, src1, src2, a->sa);
+    gen_set_gpr(a->rd, dest, dst_ext);
+
+    return true;
+}
+
+static bool trans_lu12i_w(DisasContext *ctx, arg_lu12i_w *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+    tcg_gen_movi_tl(dest, a->imm << 12);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static bool gen_pc(DisasContext *ctx, arg_r_i *a,
+                   target_ulong (*func)(target_ulong, int))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    target_ulong addr = func(ctx->base.pc_next, a->imm);
+
+    tcg_gen_movi_tl(dest, addr);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static void gen_slt(TCGv dest, TCGv src1, TCGv src2)
+{
+    tcg_gen_setcond_tl(TCG_COND_LT, dest, src1, src2);
+}
+
+static void gen_sltu(TCGv dest, TCGv src1, TCGv src2)
+{
+    tcg_gen_setcond_tl(TCG_COND_LTU, dest, src1, src2);
+}
+
+static void gen_mulh_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    tcg_gen_mul_i64(dest, src1, src2);
+    tcg_gen_sari_i64(dest, dest, 32);
+}
+
+static void gen_mulh_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv discard = tcg_temp_new();
+    tcg_gen_muls2_tl(discard, dest, src1, src2);
+    tcg_temp_free(discard);
+}
+
+static void gen_mulh_du(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv discard = tcg_temp_new();
+    tcg_gen_mulu2_tl(discard, dest, src1, src2);
+    tcg_temp_free(discard);
+}
+
+static void prep_divisor_d(TCGv ret, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    TCGv t1 = tcg_temp_new();
+    TCGv zero = tcg_constant_tl(0);
+
+    /*
+     * If min / -1, set the divisor to 1.
+     * This avoids potential host overflow trap and produces min.
+     * If x / 0, set the divisor to 1.
+     * This avoids potential host overflow trap;
+     * the required result is undefined.
+     */
+    tcg_gen_setcondi_tl(TCG_COND_EQ, ret, src1, INT64_MIN);
+    tcg_gen_setcondi_tl(TCG_COND_EQ, t0, src2, -1);
+    tcg_gen_setcondi_tl(TCG_COND_EQ, t1, src2, 0);
+    tcg_gen_and_tl(ret, ret, t0);
+    tcg_gen_or_tl(ret, ret, t1);
+    tcg_gen_movcond_tl(TCG_COND_NE, ret, ret, zero, ret, src2);
+
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
+}
+
+static void prep_divisor_du(TCGv ret, TCGv src2)
+{
+    TCGv zero = tcg_constant_tl(0);
+    TCGv one = tcg_constant_tl(1);
+
+    /*
+     * If x / 0, set the divisor to 1.
+     * This avoids potential host overflow trap;
+     * the required result is undefined.
+     */
+    tcg_gen_movcond_tl(TCG_COND_EQ, ret, src2, zero, one, src2);
+}
+
+static void gen_div_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    prep_divisor_d(t0, src1, src2);
+    tcg_gen_div_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_rem_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    prep_divisor_d(t0, src1, src2);
+    tcg_gen_rem_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_div_du(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    prep_divisor_du(t0, src2);
+    tcg_gen_divu_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_rem_du(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    prep_divisor_du(t0, src2);
+    tcg_gen_remu_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_div_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    /* We need not check for integer overflow for div_w. */
+    prep_divisor_du(t0, src2);
+    tcg_gen_div_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_rem_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    /* We need not check for integer overflow for rem_w. */
+    prep_divisor_du(t0, src2);
+    tcg_gen_rem_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_alsl(TCGv dest, TCGv src1, TCGv src2, target_long sa)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_shli_tl(t0, src1, sa);
+    tcg_gen_add_tl(dest, t0, src2);
+    tcg_temp_free(t0);
+}
+
+static bool trans_lu32i_d(DisasContext *ctx, arg_lu32i_d *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv src2 = tcg_constant_tl(a->imm);
+
+    tcg_gen_deposit_tl(dest, src1, src2, 32, 32);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static bool trans_lu52i_d(DisasContext *ctx, arg_lu52i_d *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = tcg_constant_tl(a->imm);
+
+    tcg_gen_deposit_tl(dest, src1, src2, 52, 12);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static target_ulong gen_pcaddi(target_ulong pc, int imm)
+{
+    return pc + (imm << 2);
+}
+
+static target_ulong gen_pcalau12i(target_ulong pc, int imm)
+{
+    return (pc + (imm << 12)) & ~0xfff;
+}
+
+static target_ulong gen_pcaddu12i(target_ulong pc, int imm)
+{
+    return pc + (imm << 12);
+}
+
+static target_ulong gen_pcaddu18i(target_ulong pc, int imm)
+{
+    return pc + ((target_ulong)(imm) << 18);
+}
+
+static bool trans_addu16i_d(DisasContext *ctx, arg_addu16i_d *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+    tcg_gen_addi_tl(dest, src1, a->imm << 16);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+TRANS(add_w, gen_rrr, EXT_NONE, EXT_NONE, EXT_SIGN, tcg_gen_add_tl)
+TRANS(add_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_add_tl)
+TRANS(sub_w, gen_rrr, EXT_NONE, EXT_NONE, EXT_SIGN, tcg_gen_sub_tl)
+TRANS(sub_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_sub_tl)
+TRANS(and, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_and_tl)
+TRANS(or, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_or_tl)
+TRANS(xor, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_xor_tl)
+TRANS(nor, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_nor_tl)
+TRANS(andn, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_andc_tl)
+TRANS(orn, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_orc_tl)
+TRANS(slt, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_slt)
+TRANS(sltu, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_sltu)
+TRANS(mul_w, gen_rrr, EXT_SIGN, EXT_SIGN, EXT_SIGN, tcg_gen_mul_tl)
+TRANS(mul_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_mul_tl)
+TRANS(mulh_w, gen_rrr, EXT_SIGN, EXT_SIGN, EXT_NONE, gen_mulh_w)
+TRANS(mulh_wu, gen_rrr, EXT_ZERO, EXT_ZERO, EXT_NONE, gen_mulh_w)
+TRANS(mulh_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_mulh_d)
+TRANS(mulh_du, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_mulh_du)
+TRANS(mulw_d_w, gen_rrr, EXT_SIGN, EXT_SIGN, EXT_NONE, tcg_gen_mul_tl)
+TRANS(mulw_d_wu, gen_rrr, EXT_ZERO, EXT_ZERO, EXT_NONE, tcg_gen_mul_tl)
+TRANS(div_w, gen_rrr, EXT_SIGN, EXT_SIGN, EXT_SIGN, gen_div_w)
+TRANS(mod_w, gen_rrr, EXT_SIGN, EXT_SIGN, EXT_SIGN, gen_rem_w)
+TRANS(div_wu, gen_rrr, EXT_ZERO, EXT_ZERO, EXT_SIGN, gen_div_du)
+TRANS(mod_wu, gen_rrr, EXT_ZERO, EXT_ZERO, EXT_SIGN, gen_rem_du)
+TRANS(div_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_div_d)
+TRANS(mod_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_rem_d)
+TRANS(div_du, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_div_du)
+TRANS(mod_du, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_rem_du)
+TRANS(slti, gen_rri_v, EXT_NONE, EXT_NONE, gen_slt)
+TRANS(sltui, gen_rri_v, EXT_NONE, EXT_NONE, gen_sltu)
+TRANS(addi_w, gen_rri_c, EXT_NONE, EXT_SIGN, tcg_gen_addi_tl)
+TRANS(addi_d, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_addi_tl)
+TRANS(alsl_w, gen_rrr_sa, EXT_NONE, EXT_SIGN, gen_alsl)
+TRANS(alsl_wu, gen_rrr_sa, EXT_NONE, EXT_ZERO, gen_alsl)
+TRANS(alsl_d, gen_rrr_sa, EXT_NONE, EXT_NONE, gen_alsl)
+TRANS(pcaddi, gen_pc, gen_pcaddi)
+TRANS(pcalau12i, gen_pc, gen_pcalau12i)
+TRANS(pcaddu12i, gen_pc, gen_pcaddu12i)
+TRANS(pcaddu18i, gen_pc, gen_pcaddu18i)
+TRANS(andi, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_andi_tl)
+TRANS(ori, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_ori_tl)
+TRANS(xori, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_xori_tl)
diff --git a/target/loongarch/insn_trans/trans_atomic.c.inc b/target/loongarch/insn_trans/trans_atomic.c.inc
new file mode 100644
index 0000000..6763c1c
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_atomic.c.inc
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_ll(DisasContext *ctx, arg_rr_i *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv t0 = tcg_temp_new();
+
+    tcg_gen_addi_tl(t0, src1, a->imm);
+    tcg_gen_qemu_ld_i64(dest, t0, ctx->mem_idx, mop);
+    tcg_gen_st_tl(t0, cpu_env, offsetof(CPULoongArchState, lladdr));
+    tcg_gen_st_tl(dest, cpu_env, offsetof(CPULoongArchState, llval));
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    tcg_temp_free(t0);
+
+    return true;
+}
+
+static bool gen_sc(DisasContext *ctx, arg_rr_i *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv t0 = tcg_temp_new();
+    TCGv val = tcg_temp_new();
+
+    TCGLabel *l1 = gen_new_label();
+    TCGLabel *done = gen_new_label();
+
+    tcg_gen_addi_tl(t0, src1, a->imm);
+    tcg_gen_brcond_tl(TCG_COND_EQ, t0, cpu_lladdr, l1);
+    tcg_gen_movi_tl(dest, 0);
+    tcg_gen_br(done);
+
+    gen_set_label(l1);
+    tcg_gen_mov_tl(val, src2);
+    /* generate cmpxchg */
+    tcg_gen_atomic_cmpxchg_tl(t0, cpu_lladdr, cpu_llval,
+                              val, ctx->mem_idx, mop);
+    tcg_gen_setcond_tl(TCG_COND_EQ, dest, t0, cpu_llval);
+    gen_set_label(done);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    tcg_temp_free(t0);
+    tcg_temp_free(val);
+
+    return true;
+}
+
+static bool gen_am(DisasContext *ctx, arg_rrr *a,
+                   void (*func)(TCGv, TCGv, TCGv, TCGArg, MemOp),
+                   MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv val = gpr_src(ctx, a->rk, EXT_NONE);
+
+    if (a->rd != 0 && (a->rj == a->rd || a->rk == a->rd)) {
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "Warning: source register overlaps destination register"
+                      "in atomic insn at pc=0x" TARGET_FMT_lx "\n",
+                      ctx->base.pc_next - 4);
+        return false;
+    }
+
+    func(dest, addr, val, ctx->mem_idx, mop);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+TRANS(ll_w, gen_ll, MO_TESL)
+TRANS(sc_w, gen_sc, MO_TESL)
+TRANS(ll_d, gen_ll, MO_TEUQ)
+TRANS(sc_d, gen_sc, MO_TEUQ)
+TRANS(amswap_w, gen_am, tcg_gen_atomic_xchg_tl, MO_TESL)
+TRANS(amswap_d, gen_am, tcg_gen_atomic_xchg_tl, MO_TEUQ)
+TRANS(amadd_w, gen_am, tcg_gen_atomic_fetch_add_tl, MO_TESL)
+TRANS(amadd_d, gen_am, tcg_gen_atomic_fetch_add_tl, MO_TEUQ)
+TRANS(amand_w, gen_am, tcg_gen_atomic_fetch_and_tl, MO_TESL)
+TRANS(amand_d, gen_am, tcg_gen_atomic_fetch_and_tl, MO_TEUQ)
+TRANS(amor_w, gen_am, tcg_gen_atomic_fetch_or_tl, MO_TESL)
+TRANS(amor_d, gen_am, tcg_gen_atomic_fetch_or_tl, MO_TEUQ)
+TRANS(amxor_w, gen_am, tcg_gen_atomic_fetch_xor_tl, MO_TESL)
+TRANS(amxor_d, gen_am, tcg_gen_atomic_fetch_xor_tl, MO_TEUQ)
+TRANS(ammax_w, gen_am, tcg_gen_atomic_fetch_smax_tl, MO_TESL)
+TRANS(ammax_d, gen_am, tcg_gen_atomic_fetch_smax_tl, MO_TEUQ)
+TRANS(ammin_w, gen_am, tcg_gen_atomic_fetch_smin_tl, MO_TESL)
+TRANS(ammin_d, gen_am, tcg_gen_atomic_fetch_smin_tl, MO_TEUQ)
+TRANS(ammax_wu, gen_am, tcg_gen_atomic_fetch_umax_tl, MO_TESL)
+TRANS(ammax_du, gen_am, tcg_gen_atomic_fetch_umax_tl, MO_TEUQ)
+TRANS(ammin_wu, gen_am, tcg_gen_atomic_fetch_umin_tl, MO_TESL)
+TRANS(ammin_du, gen_am, tcg_gen_atomic_fetch_umin_tl, MO_TEUQ)
+TRANS(amswap_db_w, gen_am, tcg_gen_atomic_xchg_tl, MO_TESL)
+TRANS(amswap_db_d, gen_am, tcg_gen_atomic_xchg_tl, MO_TEUQ)
+TRANS(amadd_db_w, gen_am, tcg_gen_atomic_fetch_add_tl, MO_TESL)
+TRANS(amadd_db_d, gen_am, tcg_gen_atomic_fetch_add_tl, MO_TEUQ)
+TRANS(amand_db_w, gen_am, tcg_gen_atomic_fetch_and_tl, MO_TESL)
+TRANS(amand_db_d, gen_am, tcg_gen_atomic_fetch_and_tl, MO_TEUQ)
+TRANS(amor_db_w, gen_am, tcg_gen_atomic_fetch_or_tl, MO_TESL)
+TRANS(amor_db_d, gen_am, tcg_gen_atomic_fetch_or_tl, MO_TEUQ)
+TRANS(amxor_db_w, gen_am, tcg_gen_atomic_fetch_xor_tl, MO_TESL)
+TRANS(amxor_db_d, gen_am, tcg_gen_atomic_fetch_xor_tl, MO_TEUQ)
+TRANS(ammax_db_w, gen_am, tcg_gen_atomic_fetch_smax_tl, MO_TESL)
+TRANS(ammax_db_d, gen_am, tcg_gen_atomic_fetch_smax_tl, MO_TEUQ)
+TRANS(ammin_db_w, gen_am, tcg_gen_atomic_fetch_smin_tl, MO_TESL)
+TRANS(ammin_db_d, gen_am, tcg_gen_atomic_fetch_smin_tl, MO_TEUQ)
+TRANS(ammax_db_wu, gen_am, tcg_gen_atomic_fetch_umax_tl, MO_TESL)
+TRANS(ammax_db_du, gen_am, tcg_gen_atomic_fetch_umax_tl, MO_TEUQ)
+TRANS(ammin_db_wu, gen_am, tcg_gen_atomic_fetch_umin_tl, MO_TESL)
+TRANS(ammin_db_du, gen_am, tcg_gen_atomic_fetch_umin_tl, MO_TEUQ)
diff --git a/target/loongarch/insn_trans/trans_bit.c.inc b/target/loongarch/insn_trans/trans_bit.c.inc
new file mode 100644
index 0000000..9337714
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_bit.c.inc
@@ -0,0 +1,212 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_rr(DisasContext *ctx, arg_rr *a,
+                   DisasExtend src_ext, DisasExtend dst_ext,
+                   void (*func)(TCGv, TCGv))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+    TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+
+    func(dest, src1);
+    gen_set_gpr(a->rd, dest, dst_ext);
+
+    return true;
+}
+
+static void gen_bytepick_w(TCGv dest, TCGv src1, TCGv src2, target_long sa)
+{
+    tcg_gen_concat_tl_i64(dest, src1, src2);
+    tcg_gen_sextract_i64(dest, dest, (32 - sa * 8), 32);
+}
+
+static void gen_bytepick_d(TCGv dest, TCGv src1, TCGv src2, target_long sa)
+{
+    tcg_gen_extract2_i64(dest, src1, src2, (64 - sa * 8));
+}
+
+static void gen_bstrins(TCGv dest, TCGv src1,
+                        unsigned int ls, unsigned int len)
+{
+    tcg_gen_deposit_tl(dest, dest, src1, ls, len);
+}
+
+static bool gen_rr_ms_ls(DisasContext *ctx, arg_rr_ms_ls *a,
+                         DisasExtend src_ext, DisasExtend dst_ext,
+                         void (*func)(TCGv, TCGv, unsigned int, unsigned int))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+    TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+
+    if (a->ls > a->ms) {
+        return false;
+    }
+
+    func(dest, src1, a->ls, a->ms - a->ls + 1);
+    gen_set_gpr(a->rd, dest, dst_ext);
+
+    return true;
+}
+
+static void gen_clz_w(TCGv dest, TCGv src1)
+{
+    tcg_gen_clzi_tl(dest, src1, TARGET_LONG_BITS);
+    tcg_gen_subi_tl(dest, dest, TARGET_LONG_BITS - 32);
+}
+
+static void gen_clo_w(TCGv dest, TCGv src1)
+{
+    tcg_gen_not_tl(dest, src1);
+    tcg_gen_ext32u_tl(dest, dest);
+    gen_clz_w(dest, dest);
+}
+
+static void gen_ctz_w(TCGv dest, TCGv src1)
+{
+    tcg_gen_ori_tl(dest, src1, (target_ulong)MAKE_64BIT_MASK(32, 32));
+    tcg_gen_ctzi_tl(dest, dest, TARGET_LONG_BITS);
+}
+
+static void gen_cto_w(TCGv dest, TCGv src1)
+{
+    tcg_gen_not_tl(dest, src1);
+    gen_ctz_w(dest, dest);
+}
+
+static void gen_clz_d(TCGv dest, TCGv src1)
+{
+    tcg_gen_clzi_i64(dest, src1, TARGET_LONG_BITS);
+}
+
+static void gen_clo_d(TCGv dest, TCGv src1)
+{
+    tcg_gen_not_tl(dest, src1);
+    gen_clz_d(dest, dest);
+}
+
+static void gen_ctz_d(TCGv dest, TCGv src1)
+{
+    tcg_gen_ctzi_tl(dest, src1, TARGET_LONG_BITS);
+}
+
+static void gen_cto_d(TCGv dest, TCGv src1)
+{
+    tcg_gen_not_tl(dest, src1);
+    gen_ctz_d(dest, dest);
+}
+
+static void gen_revb_2w(TCGv dest, TCGv src1)
+{
+    tcg_gen_bswap64_i64(dest, src1);
+    tcg_gen_rotri_i64(dest, dest, 32);
+}
+
+static void gen_revb_2h(TCGv dest, TCGv src1)
+{
+    TCGv mask = tcg_constant_tl(0x00FF00FF);
+    TCGv t0 = tcg_temp_new();
+    TCGv t1 = tcg_temp_new();
+
+    tcg_gen_shri_tl(t0, src1, 8);
+    tcg_gen_and_tl(t0, t0, mask);
+    tcg_gen_and_tl(t1, src1, mask);
+    tcg_gen_shli_tl(t1, t1, 8);
+    tcg_gen_or_tl(dest, t0, t1);
+
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
+}
+
+static void gen_revb_4h(TCGv dest, TCGv src1)
+{
+    TCGv mask = tcg_constant_tl(0x00FF00FF00FF00FFULL);
+    TCGv t0 = tcg_temp_new();
+    TCGv t1 = tcg_temp_new();
+
+    tcg_gen_shri_tl(t0, src1, 8);
+    tcg_gen_and_tl(t0, t0, mask);
+    tcg_gen_and_tl(t1, src1, mask);
+    tcg_gen_shli_tl(t1, t1, 8);
+    tcg_gen_or_tl(dest, t0, t1);
+
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
+}
+
+static void gen_revh_2w(TCGv dest, TCGv src1)
+{
+    TCGv_i64 t0 = tcg_temp_new_i64();
+    TCGv_i64 t1 = tcg_temp_new_i64();
+    TCGv_i64 mask = tcg_constant_i64(0x0000ffff0000ffffull);
+
+    tcg_gen_shri_i64(t0, src1, 16);
+    tcg_gen_and_i64(t1, src1, mask);
+    tcg_gen_and_i64(t0, t0, mask);
+    tcg_gen_shli_i64(t1, t1, 16);
+    tcg_gen_or_i64(dest, t1, t0);
+
+    tcg_temp_free_i64(t0);
+    tcg_temp_free_i64(t1);
+}
+
+static void gen_revh_d(TCGv dest, TCGv src1)
+{
+    TCGv t0 = tcg_temp_new();
+    TCGv t1 = tcg_temp_new();
+    TCGv mask = tcg_constant_tl(0x0000FFFF0000FFFFULL);
+
+    tcg_gen_shri_tl(t1, src1, 16);
+    tcg_gen_and_tl(t1, t1, mask);
+    tcg_gen_and_tl(t0, src1, mask);
+    tcg_gen_shli_tl(t0, t0, 16);
+    tcg_gen_or_tl(t0, t0, t1);
+    tcg_gen_rotri_tl(dest, t0, 32);
+
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
+}
+
+static void gen_maskeqz(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv zero = tcg_constant_tl(0);
+
+    tcg_gen_movcond_tl(TCG_COND_EQ, dest, src2, zero, zero, src1);
+}
+
+static void gen_masknez(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv zero = tcg_constant_tl(0);
+
+    tcg_gen_movcond_tl(TCG_COND_NE, dest, src2, zero, zero, src1);
+}
+
+TRANS(ext_w_h, gen_rr, EXT_NONE, EXT_NONE, tcg_gen_ext16s_tl)
+TRANS(ext_w_b, gen_rr, EXT_NONE, EXT_NONE, tcg_gen_ext8s_tl)
+TRANS(clo_w, gen_rr, EXT_NONE, EXT_NONE, gen_clo_w)
+TRANS(clz_w, gen_rr, EXT_ZERO, EXT_NONE, gen_clz_w)
+TRANS(cto_w, gen_rr, EXT_NONE, EXT_NONE, gen_cto_w)
+TRANS(ctz_w, gen_rr, EXT_NONE, EXT_NONE, gen_ctz_w)
+TRANS(clo_d, gen_rr, EXT_NONE, EXT_NONE, gen_clo_d)
+TRANS(clz_d, gen_rr, EXT_NONE, EXT_NONE, gen_clz_d)
+TRANS(cto_d, gen_rr, EXT_NONE, EXT_NONE, gen_cto_d)
+TRANS(ctz_d, gen_rr, EXT_NONE, EXT_NONE, gen_ctz_d)
+TRANS(revb_2h, gen_rr, EXT_NONE, EXT_SIGN, gen_revb_2h)
+TRANS(revb_4h, gen_rr, EXT_NONE, EXT_NONE, gen_revb_4h)
+TRANS(revb_2w, gen_rr, EXT_NONE, EXT_NONE, gen_revb_2w)
+TRANS(revb_d, gen_rr, EXT_NONE, EXT_NONE, tcg_gen_bswap64_i64)
+TRANS(revh_2w, gen_rr, EXT_NONE, EXT_NONE, gen_revh_2w)
+TRANS(revh_d, gen_rr, EXT_NONE, EXT_NONE, gen_revh_d)
+TRANS(bitrev_4b, gen_rr, EXT_ZERO, EXT_SIGN, gen_helper_bitswap)
+TRANS(bitrev_8b, gen_rr, EXT_NONE, EXT_NONE, gen_helper_bitswap)
+TRANS(bitrev_w, gen_rr, EXT_NONE, EXT_SIGN, gen_helper_bitrev_w)
+TRANS(bitrev_d, gen_rr, EXT_NONE, EXT_NONE, gen_helper_bitrev_d)
+TRANS(maskeqz, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_maskeqz)
+TRANS(masknez, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_masknez)
+TRANS(bytepick_w, gen_rrr_sa, EXT_NONE, EXT_NONE, gen_bytepick_w)
+TRANS(bytepick_d, gen_rrr_sa, EXT_NONE, EXT_NONE, gen_bytepick_d)
+TRANS(bstrins_w, gen_rr_ms_ls, EXT_NONE, EXT_NONE, gen_bstrins)
+TRANS(bstrins_d, gen_rr_ms_ls, EXT_NONE, EXT_NONE, gen_bstrins)
+TRANS(bstrpick_w, gen_rr_ms_ls, EXT_NONE, EXT_SIGN, tcg_gen_extract_tl)
+TRANS(bstrpick_d, gen_rr_ms_ls, EXT_NONE, EXT_NONE, tcg_gen_extract_tl)
diff --git a/target/loongarch/insn_trans/trans_branch.c.inc b/target/loongarch/insn_trans/trans_branch.c.inc
new file mode 100644
index 0000000..65dbdff
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_branch.c.inc
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool trans_b(DisasContext *ctx, arg_b *a)
+{
+    gen_goto_tb(ctx, 0, ctx->base.pc_next + a->offs);
+    ctx->base.is_jmp = DISAS_NORETURN;
+    return true;
+}
+
+static bool trans_bl(DisasContext *ctx, arg_bl *a)
+{
+    tcg_gen_movi_tl(cpu_gpr[1], ctx->base.pc_next + 4);
+    gen_goto_tb(ctx, 0, ctx->base.pc_next + a->offs);
+    ctx->base.is_jmp = DISAS_NORETURN;
+    return true;
+}
+
+static bool trans_jirl(DisasContext *ctx, arg_jirl *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+    tcg_gen_addi_tl(cpu_pc, src1, a->offs);
+    tcg_gen_movi_tl(dest, ctx->base.pc_next + 4);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    tcg_gen_lookup_and_goto_ptr();
+    ctx->base.is_jmp = DISAS_NORETURN;
+    return true;
+}
+
+static void gen_bc(DisasContext *ctx, TCGv src1, TCGv src2,
+                   target_long offs, TCGCond cond)
+{
+    TCGLabel *l = gen_new_label();
+    tcg_gen_brcond_tl(cond, src1, src2, l);
+    gen_goto_tb(ctx, 1, ctx->base.pc_next + 4);
+    gen_set_label(l);
+    gen_goto_tb(ctx, 0, ctx->base.pc_next + offs);
+    ctx->base.is_jmp = DISAS_NORETURN;
+}
+
+static bool gen_rr_bc(DisasContext *ctx, arg_rr_offs *a, TCGCond cond)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rd, EXT_NONE);
+
+    gen_bc(ctx, src1, src2, a->offs, cond);
+    return true;
+}
+
+static bool gen_rz_bc(DisasContext *ctx, arg_r_offs *a, TCGCond cond)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = tcg_constant_tl(0);
+
+    gen_bc(ctx, src1, src2, a->offs, cond);
+    return true;
+}
+
+static bool gen_cz_bc(DisasContext *ctx, arg_c_offs *a, TCGCond cond)
+{
+    TCGv src1 = tcg_temp_new();
+    TCGv src2 = tcg_constant_tl(0);
+
+    tcg_gen_ld8u_tl(src1, cpu_env,
+                    offsetof(CPULoongArchState, cf[a->cj]));
+    gen_bc(ctx, src1, src2, a->offs, cond);
+    return true;
+}
+
+TRANS(beq, gen_rr_bc, TCG_COND_EQ)
+TRANS(bne, gen_rr_bc, TCG_COND_NE)
+TRANS(blt, gen_rr_bc, TCG_COND_LT)
+TRANS(bge, gen_rr_bc, TCG_COND_GE)
+TRANS(bltu, gen_rr_bc, TCG_COND_LTU)
+TRANS(bgeu, gen_rr_bc, TCG_COND_GEU)
+TRANS(beqz, gen_rz_bc, TCG_COND_EQ)
+TRANS(bnez, gen_rz_bc, TCG_COND_NE)
+TRANS(bceqz, gen_cz_bc, TCG_COND_EQ)
+TRANS(bcnez, gen_cz_bc, TCG_COND_NE)
diff --git a/target/loongarch/insn_trans/trans_extra.c.inc b/target/loongarch/insn_trans/trans_extra.c.inc
new file mode 100644
index 0000000..ad713cd
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_extra.c.inc
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool trans_break(DisasContext *ctx, arg_break *a)
+{
+    generate_exception(ctx, EXCCODE_BRK);
+    return true;
+}
+
+static bool trans_syscall(DisasContext *ctx, arg_syscall *a)
+{
+    generate_exception(ctx, EXCCODE_SYS);
+    return true;
+}
+
+static bool trans_asrtle_d(DisasContext *ctx, arg_asrtle_d * a)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    return true;
+}
+
+static bool trans_asrtgt_d(DisasContext *ctx, arg_asrtgt_d * a)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    return true;
+}
+
+static bool gen_rdtime(DisasContext *ctx, arg_rr *a,
+                       bool word, bool high)
+{
+    TCGv dst1 = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv dst2 = gpr_dst(ctx, a->rj, EXT_NONE);
+
+    if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) {
+        gen_io_start();
+    }
+    gen_helper_rdtime_d(dst1, cpu_env);
+    if (word) {
+        tcg_gen_sextract_tl(dst1, dst1, high ? 32 : 0, 32);
+    }
+    tcg_gen_ld_i64(dst2, cpu_env, offsetof(CPULoongArchState, CSR_TID));
+
+    return true;
+}
+
+static bool trans_rdtimel_w(DisasContext *ctx, arg_rdtimel_w *a)
+{
+    return gen_rdtime(ctx, a, 1, 0);
+}
+
+static bool trans_rdtimeh_w(DisasContext *ctx, arg_rdtimeh_w *a)
+{
+    return gen_rdtime(ctx, a, 1, 1);
+}
+
+static bool trans_rdtime_d(DisasContext *ctx, arg_rdtime_d *a)
+{
+    return gen_rdtime(ctx, a, 0, 0);
+}
+
+static bool trans_cpucfg(DisasContext *ctx, arg_cpucfg *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+    gen_helper_cpucfg(dest, cpu_env, src1);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static bool gen_crc(DisasContext *ctx, arg_rrr *a,
+                    void (*func)(TCGv, TCGv, TCGv, TCGv),
+                    TCGv tsz)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_SIGN);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    func(dest, src2, src1, tsz);
+    gen_set_gpr(a->rd, dest, EXT_SIGN);
+
+    return true;
+}
+
+TRANS(crc_w_b_w, gen_crc, gen_helper_crc32, tcg_constant_tl(1))
+TRANS(crc_w_h_w, gen_crc, gen_helper_crc32, tcg_constant_tl(2))
+TRANS(crc_w_w_w, gen_crc, gen_helper_crc32, tcg_constant_tl(4))
+TRANS(crc_w_d_w, gen_crc, gen_helper_crc32, tcg_constant_tl(8))
+TRANS(crcc_w_b_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(1))
+TRANS(crcc_w_h_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(2))
+TRANS(crcc_w_w_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(4))
+TRANS(crcc_w_d_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(8))
diff --git a/target/loongarch/insn_trans/trans_farith.c.inc b/target/loongarch/insn_trans/trans_farith.c.inc
new file mode 100644
index 0000000..65ad2ff
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_farith.c.inc
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_fff(DisasContext *ctx, arg_fff *a,
+                    void (*func)(TCGv, TCGv_env, TCGv, TCGv))
+{
+    func(cpu_fpr[a->fd], cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk]);
+    return true;
+}
+
+static bool gen_ff(DisasContext *ctx, arg_ff *a,
+                   void (*func)(TCGv, TCGv_env, TCGv))
+{
+    func(cpu_fpr[a->fd], cpu_env, cpu_fpr[a->fj]);
+    return true;
+}
+
+static bool gen_muladd(DisasContext *ctx, arg_ffff *a,
+                       void (*func)(TCGv, TCGv_env, TCGv, TCGv, TCGv, TCGv_i32),
+                       int flag)
+{
+    TCGv_i32 tflag = tcg_constant_i32(flag);
+    func(cpu_fpr[a->fd], cpu_env, cpu_fpr[a->fj],
+         cpu_fpr[a->fk], cpu_fpr[a->fa], tflag);
+    return true;
+}
+
+static bool trans_fcopysign_s(DisasContext *ctx, arg_fcopysign_s *a)
+{
+    tcg_gen_deposit_i64(cpu_fpr[a->fd], cpu_fpr[a->fk], cpu_fpr[a->fj], 0, 31);
+    return true;
+}
+
+static bool trans_fcopysign_d(DisasContext *ctx, arg_fcopysign_d *a)
+{
+    tcg_gen_deposit_i64(cpu_fpr[a->fd], cpu_fpr[a->fk], cpu_fpr[a->fj], 0, 63);
+    return true;
+}
+
+static bool trans_fabs_s(DisasContext *ctx, arg_fabs_s *a)
+{
+    tcg_gen_andi_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], MAKE_64BIT_MASK(0, 31));
+    gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    return true;
+}
+
+static bool trans_fabs_d(DisasContext *ctx, arg_fabs_d *a)
+{
+    tcg_gen_andi_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], MAKE_64BIT_MASK(0, 63));
+    return true;
+}
+
+static bool trans_fneg_s(DisasContext *ctx, arg_fneg_s *a)
+{
+    tcg_gen_xori_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], 0x80000000);
+    gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    return true;
+}
+
+static bool trans_fneg_d(DisasContext *ctx, arg_fneg_d *a)
+{
+    tcg_gen_xori_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], 0x8000000000000000LL);
+    return true;
+}
+
+TRANS(fadd_s, gen_fff, gen_helper_fadd_s)
+TRANS(fadd_d, gen_fff, gen_helper_fadd_d)
+TRANS(fsub_s, gen_fff, gen_helper_fsub_s)
+TRANS(fsub_d, gen_fff, gen_helper_fsub_d)
+TRANS(fmul_s, gen_fff, gen_helper_fmul_s)
+TRANS(fmul_d, gen_fff, gen_helper_fmul_d)
+TRANS(fdiv_s, gen_fff, gen_helper_fdiv_s)
+TRANS(fdiv_d, gen_fff, gen_helper_fdiv_d)
+TRANS(fmax_s, gen_fff, gen_helper_fmax_s)
+TRANS(fmax_d, gen_fff, gen_helper_fmax_d)
+TRANS(fmin_s, gen_fff, gen_helper_fmin_s)
+TRANS(fmin_d, gen_fff, gen_helper_fmin_d)
+TRANS(fmaxa_s, gen_fff, gen_helper_fmaxa_s)
+TRANS(fmaxa_d, gen_fff, gen_helper_fmaxa_d)
+TRANS(fmina_s, gen_fff, gen_helper_fmina_s)
+TRANS(fmina_d, gen_fff, gen_helper_fmina_d)
+TRANS(fscaleb_s, gen_fff, gen_helper_fscaleb_s)
+TRANS(fscaleb_d, gen_fff, gen_helper_fscaleb_d)
+TRANS(fsqrt_s, gen_ff, gen_helper_fsqrt_s)
+TRANS(fsqrt_d, gen_ff, gen_helper_fsqrt_d)
+TRANS(frecip_s, gen_ff, gen_helper_frecip_s)
+TRANS(frecip_d, gen_ff, gen_helper_frecip_d)
+TRANS(frsqrt_s, gen_ff, gen_helper_frsqrt_s)
+TRANS(frsqrt_d, gen_ff, gen_helper_frsqrt_d)
+TRANS(flogb_s, gen_ff, gen_helper_flogb_s)
+TRANS(flogb_d, gen_ff, gen_helper_flogb_d)
+TRANS(fclass_s, gen_ff, gen_helper_fclass_s)
+TRANS(fclass_d, gen_ff, gen_helper_fclass_d)
+TRANS(fmadd_s, gen_muladd, gen_helper_fmuladd_s, 0)
+TRANS(fmadd_d, gen_muladd, gen_helper_fmuladd_d, 0)
+TRANS(fmsub_s, gen_muladd, gen_helper_fmuladd_s, float_muladd_negate_c)
+TRANS(fmsub_d, gen_muladd, gen_helper_fmuladd_d, float_muladd_negate_c)
+TRANS(fnmadd_s, gen_muladd, gen_helper_fmuladd_s,
+      float_muladd_negate_product | float_muladd_negate_c)
+TRANS(fnmadd_d, gen_muladd, gen_helper_fmuladd_d,
+      float_muladd_negate_product | float_muladd_negate_c)
+TRANS(fnmsub_s, gen_muladd, gen_helper_fmuladd_s, float_muladd_negate_product)
+TRANS(fnmsub_d, gen_muladd, gen_helper_fmuladd_d, float_muladd_negate_product)
diff --git a/target/loongarch/insn_trans/trans_fcmp.c.inc b/target/loongarch/insn_trans/trans_fcmp.c.inc
new file mode 100644
index 0000000..93a6a22
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fcmp.c.inc
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+/* bit0(signaling/quiet) bit1(lt) bit2(eq) bit3(un) bit4(neq) */
+static uint32_t get_fcmp_flags(int cond)
+{
+    uint32_t flags = 0;
+
+    if (cond & 0x1) {
+        flags |= FCMP_LT;
+    }
+    if (cond & 0x2) {
+        flags |= FCMP_EQ;
+    }
+    if (cond & 0x4) {
+        flags |= FCMP_UN;
+    }
+    if (cond & 0x8) {
+        flags |= FCMP_GT | FCMP_LT;
+    }
+    return flags;
+}
+
+static bool trans_fcmp_cond_s(DisasContext *ctx, arg_fcmp_cond_s *a)
+{
+    TCGv var = tcg_temp_new();
+    uint32_t flags;
+    void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
+
+    fn = (a->fcond & 1 ? gen_helper_fcmp_s_s : gen_helper_fcmp_c_s);
+    flags = get_fcmp_flags(a->fcond >> 1);
+
+    fn(var, cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk], tcg_constant_i32(flags));
+
+    tcg_gen_st8_tl(var, cpu_env, offsetof(CPULoongArchState, cf[a->cd]));
+    tcg_temp_free(var);
+    return true;
+}
+
+static bool trans_fcmp_cond_d(DisasContext *ctx, arg_fcmp_cond_d *a)
+{
+    TCGv var = tcg_temp_new();
+    uint32_t flags;
+    void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
+    fn = (a->fcond & 1 ? gen_helper_fcmp_s_d : gen_helper_fcmp_c_d);
+    flags = get_fcmp_flags(a->fcond >> 1);
+
+    fn(var, cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk], tcg_constant_i32(flags));
+
+    tcg_gen_st8_tl(var, cpu_env, offsetof(CPULoongArchState, cf[a->cd]));
+
+    tcg_temp_free(var);
+    return true;
+}
diff --git a/target/loongarch/insn_trans/trans_fcnv.c.inc b/target/loongarch/insn_trans/trans_fcnv.c.inc
new file mode 100644
index 0000000..c1c6918
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fcnv.c.inc
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+TRANS(fcvt_s_d, gen_ff, gen_helper_fcvt_s_d)
+TRANS(fcvt_d_s, gen_ff, gen_helper_fcvt_d_s)
+TRANS(ftintrm_w_s, gen_ff, gen_helper_ftintrm_w_s)
+TRANS(ftintrm_w_d, gen_ff, gen_helper_ftintrm_w_d)
+TRANS(ftintrm_l_s, gen_ff, gen_helper_ftintrm_l_s)
+TRANS(ftintrm_l_d, gen_ff, gen_helper_ftintrm_l_d)
+TRANS(ftintrp_w_s, gen_ff, gen_helper_ftintrp_w_s)
+TRANS(ftintrp_w_d, gen_ff, gen_helper_ftintrp_w_d)
+TRANS(ftintrp_l_s, gen_ff, gen_helper_ftintrp_l_s)
+TRANS(ftintrp_l_d, gen_ff, gen_helper_ftintrp_l_d)
+TRANS(ftintrz_w_s, gen_ff, gen_helper_ftintrz_w_s)
+TRANS(ftintrz_w_d, gen_ff, gen_helper_ftintrz_w_d)
+TRANS(ftintrz_l_s, gen_ff, gen_helper_ftintrz_l_s)
+TRANS(ftintrz_l_d, gen_ff, gen_helper_ftintrz_l_d)
+TRANS(ftintrne_w_s, gen_ff, gen_helper_ftintrne_w_s)
+TRANS(ftintrne_w_d, gen_ff, gen_helper_ftintrne_w_d)
+TRANS(ftintrne_l_s, gen_ff, gen_helper_ftintrne_l_s)
+TRANS(ftintrne_l_d, gen_ff, gen_helper_ftintrne_l_d)
+TRANS(ftint_w_s, gen_ff, gen_helper_ftint_w_s)
+TRANS(ftint_w_d, gen_ff, gen_helper_ftint_w_d)
+TRANS(ftint_l_s, gen_ff, gen_helper_ftint_l_s)
+TRANS(ftint_l_d, gen_ff, gen_helper_ftint_l_d)
+TRANS(ffint_s_w, gen_ff, gen_helper_ffint_s_w)
+TRANS(ffint_s_l, gen_ff, gen_helper_ffint_s_l)
+TRANS(ffint_d_w, gen_ff, gen_helper_ffint_d_w)
+TRANS(ffint_d_l, gen_ff, gen_helper_ffint_d_l)
+TRANS(frint_s, gen_ff, gen_helper_frint_s)
+TRANS(frint_d, gen_ff, gen_helper_frint_d)
diff --git a/target/loongarch/insn_trans/trans_fmemory.c.inc b/target/loongarch/insn_trans/trans_fmemory.c.inc
new file mode 100644
index 0000000..74ee98f
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fmemory.c.inc
@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static void maybe_nanbox_load(TCGv freg, MemOp mop)
+{
+    if ((mop & MO_SIZE) == MO_32) {
+        gen_nanbox_s(freg, freg);
+    }
+}
+
+static bool gen_fload_i(DisasContext *ctx, arg_fr_i *a, MemOp mop)
+{
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->imm) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->imm);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    maybe_nanbox_load(cpu_fpr[a->fd], mop);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+
+    return true;
+}
+
+static bool gen_fstore_i(DisasContext *ctx, arg_fr_i *a, MemOp mop)
+{
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->imm) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->imm);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+    return true;
+}
+
+static bool gen_floadx(DisasContext *ctx, arg_frr *a, MemOp mop)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    maybe_nanbox_load(cpu_fpr[a->fd], mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_fstorex(DisasContext *ctx, arg_frr *a, MemOp mop)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_fload_gt(DisasContext *ctx, arg_frr *a, MemOp mop)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    maybe_nanbox_load(cpu_fpr[a->fd], mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_fstore_gt(DisasContext *ctx, arg_frr *a, MemOp mop)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_fload_le(DisasContext *ctx, arg_frr *a, MemOp mop)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    maybe_nanbox_load(cpu_fpr[a->fd], mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_fstore_le(DisasContext *ctx, arg_frr *a, MemOp mop)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+TRANS(fld_s, gen_fload_i, MO_TEUL)
+TRANS(fst_s, gen_fstore_i, MO_TEUL)
+TRANS(fld_d, gen_fload_i, MO_TEUQ)
+TRANS(fst_d, gen_fstore_i, MO_TEUQ)
+TRANS(fldx_s, gen_floadx, MO_TEUL)
+TRANS(fldx_d, gen_floadx, MO_TEUQ)
+TRANS(fstx_s, gen_fstorex, MO_TEUL)
+TRANS(fstx_d, gen_fstorex, MO_TEUQ)
+TRANS(fldgt_s, gen_fload_gt, MO_TEUL)
+TRANS(fldgt_d, gen_fload_gt, MO_TEUQ)
+TRANS(fldle_s, gen_fload_le, MO_TEUL)
+TRANS(fldle_d, gen_fload_le, MO_TEUQ)
+TRANS(fstgt_s, gen_fstore_gt, MO_TEUL)
+TRANS(fstgt_d, gen_fstore_gt, MO_TEUQ)
+TRANS(fstle_s, gen_fstore_le, MO_TEUL)
+TRANS(fstle_d, gen_fstore_le, MO_TEUQ)
diff --git a/target/loongarch/insn_trans/trans_fmov.c.inc b/target/loongarch/insn_trans/trans_fmov.c.inc
new file mode 100644
index 0000000..24753d4
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fmov.c.inc
@@ -0,0 +1,157 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static const uint32_t fcsr_mask[4] = {
+    UINT32_MAX, FCSR0_M1, FCSR0_M2, FCSR0_M3
+};
+
+static bool trans_fsel(DisasContext *ctx, arg_fsel *a)
+{
+    TCGv zero = tcg_constant_tl(0);
+    TCGv cond = tcg_temp_new();
+
+    tcg_gen_ld8u_tl(cond, cpu_env, offsetof(CPULoongArchState, cf[a->ca]));
+    tcg_gen_movcond_tl(TCG_COND_EQ, cpu_fpr[a->fd], cond, zero,
+                       cpu_fpr[a->fj], cpu_fpr[a->fk]);
+    tcg_temp_free(cond);
+
+    return true;
+}
+
+static bool gen_f2f(DisasContext *ctx, arg_ff *a,
+                    void (*func)(TCGv, TCGv), bool nanbox)
+{
+    TCGv dest = cpu_fpr[a->fd];
+    TCGv src = cpu_fpr[a->fj];
+
+    func(dest, src);
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    return true;
+}
+
+static bool gen_r2f(DisasContext *ctx, arg_fr *a,
+                    void (*func)(TCGv, TCGv))
+{
+    TCGv src = gpr_src(ctx, a->rj, EXT_NONE);
+
+    func(cpu_fpr[a->fd], src);
+    return true;
+}
+
+static bool gen_f2r(DisasContext *ctx, arg_rf *a,
+                    void (*func)(TCGv, TCGv))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+    func(dest, cpu_fpr[a->fj]);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static bool trans_movgr2fcsr(DisasContext *ctx, arg_movgr2fcsr *a)
+{
+    uint32_t mask = fcsr_mask[a->fcsrd];
+    TCGv Rj = gpr_src(ctx, a->rj, EXT_NONE);
+
+    if (mask == UINT32_MAX) {
+        tcg_gen_extrl_i64_i32(cpu_fcsr0, Rj);
+    } else {
+        TCGv_i32 temp = tcg_temp_new_i32();
+
+        tcg_gen_extrl_i64_i32(temp, Rj);
+        tcg_gen_andi_i32(temp, temp, mask);
+        tcg_gen_andi_i32(cpu_fcsr0, cpu_fcsr0, ~mask);
+        tcg_gen_or_i32(cpu_fcsr0, cpu_fcsr0, temp);
+        tcg_temp_free_i32(temp);
+
+        /*
+         * Install the new rounding mode to fpu_status, if changed.
+         * Note that FCSR3 is exactly the rounding mode field.
+         */
+        if (mask != FCSR0_M3) {
+            return true;
+        }
+    }
+    gen_helper_set_rounding_mode(cpu_env, cpu_fcsr0);
+
+    return true;
+}
+
+static bool trans_movfcsr2gr(DisasContext *ctx, arg_movfcsr2gr *a)
+{
+    TCGv_i32 temp = tcg_temp_new_i32();
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+    tcg_gen_andi_i32(temp, cpu_fcsr0, fcsr_mask[a->fcsrs]);
+    tcg_gen_ext_i32_i64(dest, temp);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    tcg_temp_free_i32(temp);
+
+    return true;
+}
+
+static void gen_movgr2fr_w(TCGv dest, TCGv src)
+{
+    tcg_gen_deposit_i64(dest, dest, src, 0, 32);
+}
+
+static void gen_movgr2frh_w(TCGv dest, TCGv src)
+{
+    tcg_gen_deposit_i64(dest, dest, src, 32, 32);
+}
+
+static void gen_movfrh2gr_s(TCGv dest, TCGv src)
+{
+    tcg_gen_sextract_tl(dest, src, 32, 32);
+}
+
+static bool trans_movfr2cf(DisasContext *ctx, arg_movfr2cf *a)
+{
+    TCGv t0 = tcg_temp_new();
+
+    tcg_gen_andi_tl(t0, cpu_fpr[a->fj], 0x1);
+    tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
+    tcg_temp_free(t0);
+
+    return true;
+}
+
+static bool trans_movcf2fr(DisasContext *ctx, arg_movcf2fr *a)
+{
+    tcg_gen_ld8u_tl(cpu_fpr[a->fd], cpu_env,
+                    offsetof(CPULoongArchState, cf[a->cj & 0x7]));
+    return true;
+}
+
+static bool trans_movgr2cf(DisasContext *ctx, arg_movgr2cf *a)
+{
+    TCGv t0 = tcg_temp_new();
+
+    tcg_gen_andi_tl(t0, gpr_src(ctx, a->rj, EXT_NONE), 0x1);
+    tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
+    tcg_temp_free(t0);
+
+    return true;
+}
+
+static bool trans_movcf2gr(DisasContext *ctx, arg_movcf2gr *a)
+{
+    tcg_gen_ld8u_tl(gpr_dst(ctx, a->rd, EXT_NONE), cpu_env,
+                    offsetof(CPULoongArchState, cf[a->cj & 0x7]));
+    return true;
+}
+
+TRANS(fmov_s, gen_f2f, tcg_gen_mov_tl, true)
+TRANS(fmov_d, gen_f2f, tcg_gen_mov_tl, false)
+TRANS(movgr2fr_w, gen_r2f, gen_movgr2fr_w)
+TRANS(movgr2fr_d, gen_r2f, tcg_gen_mov_tl)
+TRANS(movgr2frh_w, gen_r2f, gen_movgr2frh_w)
+TRANS(movfr2gr_s, gen_f2r, tcg_gen_ext32s_tl)
+TRANS(movfr2gr_d, gen_f2r, tcg_gen_mov_tl)
+TRANS(movfrh2gr_s, gen_f2r, gen_movfrh2gr_s)
diff --git a/target/loongarch/insn_trans/trans_memory.c.inc b/target/loongarch/insn_trans/trans_memory.c.inc
new file mode 100644
index 0000000..d5eb311
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_memory.c.inc
@@ -0,0 +1,229 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_load(DisasContext *ctx, arg_rr_i *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->imm) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->imm);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+
+    return true;
+}
+
+static bool gen_store(DisasContext *ctx, arg_rr_i *a, MemOp mop)
+{
+    TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->imm) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->imm);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+
+    return true;
+}
+
+static bool gen_loadx(DisasContext *ctx, arg_rrr *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_storex(DisasContext *ctx, arg_rrr *a, MemOp mop)
+{
+    TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+    tcg_temp_free(addr);
+
+    return true;
+}
+
+static bool gen_load_gt(DisasContext *ctx, arg_rrr *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    tcg_gen_qemu_ld_tl(dest, src1, ctx->mem_idx, mop);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static bool gen_load_le(DisasContext *ctx, arg_rrr *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    tcg_gen_qemu_ld_tl(dest, src1, ctx->mem_idx, mop);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+static bool gen_store_gt(DisasContext *ctx, arg_rrr *a, MemOp mop)
+{
+    TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    tcg_gen_qemu_st_tl(data, src1, ctx->mem_idx, mop);
+
+    return true;
+}
+
+static bool gen_store_le(DisasContext *ctx, arg_rrr *a, MemOp mop)
+{
+    TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    tcg_gen_qemu_st_tl(data, src1, ctx->mem_idx, mop);
+
+    return true;
+}
+
+static bool trans_preld(DisasContext *ctx, arg_preld *a)
+{
+    return true;
+}
+
+static bool trans_dbar(DisasContext *ctx, arg_dbar * a)
+{
+    tcg_gen_mb(TCG_BAR_SC | TCG_MO_ALL);
+    return true;
+}
+
+static bool trans_ibar(DisasContext *ctx, arg_ibar *a)
+{
+    ctx->base.is_jmp = DISAS_STOP;
+    return true;
+}
+
+static bool gen_ldptr(DisasContext *ctx, arg_rr_i *a, MemOp mop)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->imm) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->imm);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+
+    return true;
+}
+
+static bool gen_stptr(DisasContext *ctx, arg_rr_i *a, MemOp mop)
+{
+    TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->imm) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->imm);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+
+    return true;
+}
+
+TRANS(ld_b, gen_load, MO_SB)
+TRANS(ld_h, gen_load, MO_TESW)
+TRANS(ld_w, gen_load, MO_TESL)
+TRANS(ld_d, gen_load, MO_TEUQ)
+TRANS(st_b, gen_store, MO_UB)
+TRANS(st_h, gen_store, MO_TEUW)
+TRANS(st_w, gen_store, MO_TEUL)
+TRANS(st_d, gen_store, MO_TEUQ)
+TRANS(ld_bu, gen_load, MO_UB)
+TRANS(ld_hu, gen_load, MO_TEUW)
+TRANS(ld_wu, gen_load, MO_TEUL)
+TRANS(ldx_b, gen_loadx, MO_SB)
+TRANS(ldx_h, gen_loadx, MO_TESW)
+TRANS(ldx_w, gen_loadx, MO_TESL)
+TRANS(ldx_d, gen_loadx, MO_TEUQ)
+TRANS(stx_b, gen_storex, MO_UB)
+TRANS(stx_h, gen_storex, MO_TEUW)
+TRANS(stx_w, gen_storex, MO_TEUL)
+TRANS(stx_d, gen_storex, MO_TEUQ)
+TRANS(ldx_bu, gen_loadx, MO_UB)
+TRANS(ldx_hu, gen_loadx, MO_TEUW)
+TRANS(ldx_wu, gen_loadx, MO_TEUL)
+TRANS(ldptr_w, gen_ldptr, MO_TESL)
+TRANS(stptr_w, gen_stptr, MO_TEUL)
+TRANS(ldptr_d, gen_ldptr, MO_TEUQ)
+TRANS(stptr_d, gen_stptr, MO_TEUQ)
+TRANS(ldgt_b, gen_load_gt, MO_SB)
+TRANS(ldgt_h, gen_load_gt, MO_TESW)
+TRANS(ldgt_w, gen_load_gt, MO_TESL)
+TRANS(ldgt_d, gen_load_gt, MO_TEUQ)
+TRANS(ldle_b, gen_load_le, MO_SB)
+TRANS(ldle_h, gen_load_le, MO_TESW)
+TRANS(ldle_w, gen_load_le, MO_TESL)
+TRANS(ldle_d, gen_load_le, MO_TEUQ)
+TRANS(stgt_b, gen_store_gt, MO_UB)
+TRANS(stgt_h, gen_store_gt, MO_TEUW)
+TRANS(stgt_w, gen_store_gt, MO_TEUL)
+TRANS(stgt_d, gen_store_gt, MO_TEUQ)
+TRANS(stle_b, gen_store_le, MO_UB)
+TRANS(stle_h, gen_store_le, MO_TEUW)
+TRANS(stle_w, gen_store_le, MO_TEUL)
+TRANS(stle_d, gen_store_le, MO_TEUQ)
diff --git a/target/loongarch/insn_trans/trans_privileged.c.inc b/target/loongarch/insn_trans/trans_privileged.c.inc
new file mode 100644
index 0000000..53596c4
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_privileged.c.inc
@@ -0,0 +1,466 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * LoongArch translation routines for the privileged instructions.
+ */
+
+#include "cpu-csr.h"
+
+typedef void (*GenCSRRead)(TCGv dest, TCGv_ptr env);
+typedef void (*GenCSRWrite)(TCGv dest, TCGv_ptr env, TCGv src);
+
+typedef struct {
+    int offset;
+    int flags;
+    GenCSRRead readfn;
+    GenCSRWrite writefn;
+} CSRInfo;
+
+enum {
+    CSRFL_READONLY = (1 << 0),
+    CSRFL_EXITTB   = (1 << 1),
+    CSRFL_IO       = (1 << 2),
+};
+
+#define CSR_OFF_FUNCS(NAME, FL, RD, WR)                    \
+    [LOONGARCH_CSR_##NAME] = {                             \
+        .offset = offsetof(CPULoongArchState, CSR_##NAME), \
+        .flags = FL, .readfn = RD, .writefn = WR           \
+    }
+
+#define CSR_OFF_ARRAY(NAME, N)                                \
+    [LOONGARCH_CSR_##NAME(N)] = {                             \
+        .offset = offsetof(CPULoongArchState, CSR_##NAME[N]), \
+        .flags = 0, .readfn = NULL, .writefn = NULL           \
+    }
+
+#define CSR_OFF_FLAGS(NAME, FL) \
+    CSR_OFF_FUNCS(NAME, FL, NULL, NULL)
+
+#define CSR_OFF(NAME) \
+    CSR_OFF_FLAGS(NAME, 0)
+
+static const CSRInfo csr_info[] = {
+    CSR_OFF_FLAGS(CRMD, CSRFL_EXITTB),
+    CSR_OFF(PRMD),
+    CSR_OFF_FLAGS(EUEN, CSRFL_EXITTB),
+    CSR_OFF_FLAGS(MISC, CSRFL_READONLY),
+    CSR_OFF(ECFG),
+    CSR_OFF_FUNCS(ESTAT, CSRFL_EXITTB, NULL, gen_helper_csrwr_estat),
+    CSR_OFF(ERA),
+    CSR_OFF(BADV),
+    CSR_OFF_FLAGS(BADI, CSRFL_READONLY),
+    CSR_OFF(EENTRY),
+    CSR_OFF(TLBIDX),
+    CSR_OFF(TLBEHI),
+    CSR_OFF(TLBELO0),
+    CSR_OFF(TLBELO1),
+    CSR_OFF_FUNCS(ASID, CSRFL_EXITTB, NULL, gen_helper_csrwr_asid),
+    CSR_OFF(PGDL),
+    CSR_OFF(PGDH),
+    CSR_OFF_FUNCS(PGD, CSRFL_READONLY, gen_helper_csrrd_pgd, NULL),
+    CSR_OFF(PWCL),
+    CSR_OFF(PWCH),
+    CSR_OFF(STLBPS),
+    CSR_OFF(RVACFG),
+    [LOONGARCH_CSR_CPUID] = {
+        .offset = (int)offsetof(CPUState, cpu_index)
+                  - (int)offsetof(LoongArchCPU, env),
+        .flags = CSRFL_READONLY,
+        .readfn = NULL,
+        .writefn = NULL
+    },
+    CSR_OFF_FLAGS(PRCFG1, CSRFL_READONLY),
+    CSR_OFF_FLAGS(PRCFG2, CSRFL_READONLY),
+    CSR_OFF_FLAGS(PRCFG3, CSRFL_READONLY),
+    CSR_OFF_ARRAY(SAVE, 0),
+    CSR_OFF_ARRAY(SAVE, 1),
+    CSR_OFF_ARRAY(SAVE, 2),
+    CSR_OFF_ARRAY(SAVE, 3),
+    CSR_OFF_ARRAY(SAVE, 4),
+    CSR_OFF_ARRAY(SAVE, 5),
+    CSR_OFF_ARRAY(SAVE, 6),
+    CSR_OFF_ARRAY(SAVE, 7),
+    CSR_OFF_ARRAY(SAVE, 8),
+    CSR_OFF_ARRAY(SAVE, 9),
+    CSR_OFF_ARRAY(SAVE, 10),
+    CSR_OFF_ARRAY(SAVE, 11),
+    CSR_OFF_ARRAY(SAVE, 12),
+    CSR_OFF_ARRAY(SAVE, 13),
+    CSR_OFF_ARRAY(SAVE, 14),
+    CSR_OFF_ARRAY(SAVE, 15),
+    CSR_OFF(TID),
+    CSR_OFF_FUNCS(TCFG, CSRFL_IO, NULL, gen_helper_csrwr_tcfg),
+    CSR_OFF_FUNCS(TVAL, CSRFL_READONLY | CSRFL_IO, gen_helper_csrrd_tval, NULL),
+    CSR_OFF(CNTC),
+    CSR_OFF_FUNCS(TICLR, CSRFL_IO, NULL, gen_helper_csrwr_ticlr),
+    CSR_OFF(LLBCTL),
+    CSR_OFF(IMPCTL1),
+    CSR_OFF(IMPCTL2),
+    CSR_OFF(TLBRENTRY),
+    CSR_OFF(TLBRBADV),
+    CSR_OFF(TLBRERA),
+    CSR_OFF(TLBRSAVE),
+    CSR_OFF(TLBRELO0),
+    CSR_OFF(TLBRELO1),
+    CSR_OFF(TLBREHI),
+    CSR_OFF(TLBRPRMD),
+    CSR_OFF(MERRCTL),
+    CSR_OFF(MERRINFO1),
+    CSR_OFF(MERRINFO2),
+    CSR_OFF(MERRENTRY),
+    CSR_OFF(MERRERA),
+    CSR_OFF(MERRSAVE),
+    CSR_OFF(CTAG),
+    CSR_OFF_ARRAY(DMW, 0),
+    CSR_OFF_ARRAY(DMW, 1),
+    CSR_OFF_ARRAY(DMW, 2),
+    CSR_OFF_ARRAY(DMW, 3),
+    CSR_OFF(DBG),
+    CSR_OFF(DERA),
+    CSR_OFF(DSAVE),
+};
+
+static bool check_plv(DisasContext *ctx)
+{
+    if (ctx->base.tb->flags == MMU_USER_IDX) {
+        generate_exception(ctx, EXCCODE_IPE);
+        return true;
+    }
+    return false;
+}
+
+static const CSRInfo *get_csr(unsigned csr_num)
+{
+    const CSRInfo *csr;
+
+    if (csr_num >= ARRAY_SIZE(csr_info)) {
+        return NULL;
+    }
+    csr = &csr_info[csr_num];
+    if (csr->offset == 0) {
+        return NULL;
+    }
+    return csr;
+}
+
+static bool check_csr_flags(DisasContext *ctx, const CSRInfo *csr, bool write)
+{
+    if ((csr->flags & CSRFL_READONLY) && write) {
+        return false;
+    }
+    if ((csr->flags & CSRFL_IO) &&
+        (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT)) {
+        gen_io_start();
+        ctx->base.is_jmp = DISAS_EXIT_UPDATE;
+    } else if ((csr->flags & CSRFL_EXITTB) && write) {
+        ctx->base.is_jmp = DISAS_EXIT_UPDATE;
+    }
+    return true;
+}
+
+static bool trans_csrrd(DisasContext *ctx, arg_csrrd *a)
+{
+    TCGv dest;
+    const CSRInfo *csr;
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    csr = get_csr(a->csr);
+    if (csr == NULL) {
+        /* CSR is undefined: read as 0. */
+        dest = tcg_constant_tl(0);
+    } else {
+        check_csr_flags(ctx, csr, false);
+        dest = gpr_dst(ctx, a->rd, EXT_NONE);
+        if (csr->readfn) {
+            csr->readfn(dest, cpu_env);
+        } else {
+            tcg_gen_ld_tl(dest, cpu_env, csr->offset);
+        }
+    }
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    return true;
+}
+
+static bool trans_csrwr(DisasContext *ctx, arg_csrwr *a)
+{
+    TCGv dest, src1;
+    const CSRInfo *csr;
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    csr = get_csr(a->csr);
+    if (csr == NULL) {
+        /* CSR is undefined: write ignored, read old_value as 0. */
+        gen_set_gpr(a->rd, tcg_constant_tl(0), EXT_NONE);
+        return true;
+    }
+    if (!check_csr_flags(ctx, csr, true)) {
+        /* CSR is readonly: trap. */
+        return false;
+    }
+    src1 = gpr_src(ctx, a->rd, EXT_NONE);
+    if (csr->writefn) {
+        dest = gpr_dst(ctx, a->rd, EXT_NONE);
+        csr->writefn(dest, cpu_env, src1);
+    } else {
+        dest = temp_new(ctx);
+        tcg_gen_ld_tl(dest, cpu_env, csr->offset);
+        tcg_gen_st_tl(src1, cpu_env, csr->offset);
+    }
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+    return true;
+}
+
+static bool trans_csrxchg(DisasContext *ctx, arg_csrxchg *a)
+{
+    TCGv src1, mask, oldv, newv, temp;
+    const CSRInfo *csr;
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    csr = get_csr(a->csr);
+    if (csr == NULL) {
+        /* CSR is undefined: write ignored, read old_value as 0. */
+        gen_set_gpr(a->rd, tcg_constant_tl(0), EXT_NONE);
+        return true;
+    }
+
+    if (!check_csr_flags(ctx, csr, true)) {
+        /* CSR is readonly: trap. */
+        return false;
+    }
+
+    /* So far only readonly csrs have readfn. */
+    assert(csr->readfn == NULL);
+
+    src1 = gpr_src(ctx, a->rd, EXT_NONE);
+    mask = gpr_src(ctx, a->rj, EXT_NONE);
+    oldv = tcg_temp_new();
+    newv = tcg_temp_new();
+    temp = tcg_temp_new();
+
+    tcg_gen_ld_tl(oldv, cpu_env, csr->offset);
+    tcg_gen_and_tl(newv, src1, mask);
+    tcg_gen_andc_tl(temp, oldv, mask);
+    tcg_gen_or_tl(newv, newv, temp);
+
+    if (csr->writefn) {
+        csr->writefn(oldv, cpu_env, newv);
+    } else {
+        tcg_gen_st_tl(newv, cpu_env, csr->offset);
+    }
+    gen_set_gpr(a->rd, oldv, EXT_NONE);
+
+    tcg_temp_free(temp);
+    tcg_temp_free(newv);
+    tcg_temp_free(oldv);
+    return true;
+}
+
+static bool gen_iocsrrd(DisasContext *ctx, arg_rr *a,
+                        void (*func)(TCGv, TCGv_ptr, TCGv))
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    func(dest, cpu_env, src1);
+    return true;
+}
+
+static bool gen_iocsrwr(DisasContext *ctx, arg_rr *a,
+                        void (*func)(TCGv_ptr, TCGv, TCGv))
+{
+    TCGv val = gpr_src(ctx, a->rd, EXT_NONE);
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    func(cpu_env, addr, val);
+    return true;
+}
+
+TRANS(iocsrrd_b, gen_iocsrrd, gen_helper_iocsrrd_b)
+TRANS(iocsrrd_h, gen_iocsrrd, gen_helper_iocsrrd_h)
+TRANS(iocsrrd_w, gen_iocsrrd, gen_helper_iocsrrd_w)
+TRANS(iocsrrd_d, gen_iocsrrd, gen_helper_iocsrrd_d)
+TRANS(iocsrwr_b, gen_iocsrwr, gen_helper_iocsrwr_b)
+TRANS(iocsrwr_h, gen_iocsrwr, gen_helper_iocsrwr_h)
+TRANS(iocsrwr_w, gen_iocsrwr, gen_helper_iocsrwr_w)
+TRANS(iocsrwr_d, gen_iocsrwr, gen_helper_iocsrwr_d)
+
+static void check_mmu_idx(DisasContext *ctx)
+{
+    if (ctx->mem_idx != MMU_DA_IDX) {
+        tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next + 4);
+        ctx->base.is_jmp = DISAS_EXIT;
+    }
+}
+
+static bool trans_tlbsrch(DisasContext *ctx, arg_tlbsrch *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_tlbsrch(cpu_env);
+    return true;
+}
+
+static bool trans_tlbrd(DisasContext *ctx, arg_tlbrd *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_tlbrd(cpu_env);
+    return true;
+}
+
+static bool trans_tlbwr(DisasContext *ctx, arg_tlbwr *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_tlbwr(cpu_env);
+    check_mmu_idx(ctx);
+    return true;
+}
+
+static bool trans_tlbfill(DisasContext *ctx, arg_tlbfill *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_tlbfill(cpu_env);
+    check_mmu_idx(ctx);
+    return true;
+}
+
+static bool trans_tlbclr(DisasContext *ctx, arg_tlbclr *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_tlbclr(cpu_env);
+    check_mmu_idx(ctx);
+    return true;
+}
+
+static bool trans_tlbflush(DisasContext *ctx, arg_tlbflush *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_tlbflush(cpu_env);
+    check_mmu_idx(ctx);
+    return true;
+}
+
+static bool trans_invtlb(DisasContext *ctx, arg_invtlb *a)
+{
+    TCGv rj = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv rk = gpr_src(ctx, a->rk, EXT_NONE);
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+
+    switch (a->imm) {
+    case 0:
+    case 1:
+        gen_helper_invtlb_all(cpu_env);
+        break;
+    case 2:
+        gen_helper_invtlb_all_g(cpu_env, tcg_constant_i32(1));
+        break;
+    case 3:
+        gen_helper_invtlb_all_g(cpu_env, tcg_constant_i32(0));
+        break;
+    case 4:
+        gen_helper_invtlb_all_asid(cpu_env, rj);
+        break;
+    case 5:
+        gen_helper_invtlb_page_asid(cpu_env, rj, rk);
+        break;
+    case 6:
+        gen_helper_invtlb_page_asid_or_g(cpu_env, rj, rk);
+        break;
+    default:
+        return false;
+    }
+    ctx->base.is_jmp = DISAS_STOP;
+    return true;
+}
+
+static bool trans_cacop(DisasContext *ctx, arg_cacop *a)
+{
+    /* Treat the cacop as a nop */
+    if (check_plv(ctx)) {
+        return false;
+    }
+    return true;
+}
+
+static bool trans_ldpte(DisasContext *ctx, arg_ldpte *a)
+{
+    TCGv_i32 mem_idx = tcg_constant_i32(ctx->mem_idx);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_ldpte(cpu_env, src1, tcg_constant_tl(a->imm), mem_idx);
+    return true;
+}
+
+static bool trans_lddir(DisasContext *ctx, arg_lddir *a)
+{
+    TCGv_i32 mem_idx = tcg_constant_i32(ctx->mem_idx);
+    TCGv src = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_lddir(dest, cpu_env, src, tcg_constant_tl(a->imm), mem_idx);
+    return true;
+}
+
+static bool trans_ertn(DisasContext *ctx, arg_ertn *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    gen_helper_ertn(cpu_env);
+    ctx->base.is_jmp = DISAS_EXIT;
+    return true;
+}
+
+static bool trans_dbcl(DisasContext *ctx, arg_dbcl *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+    generate_exception(ctx, EXCCODE_DBP);
+    return true;
+}
+
+static bool trans_idle(DisasContext *ctx, arg_idle *a)
+{
+    if (check_plv(ctx)) {
+        return false;
+    }
+
+    tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next + 4);
+    gen_helper_idle(cpu_env);
+    ctx->base.is_jmp = DISAS_NORETURN;
+    return true;
+}
diff --git a/target/loongarch/insn_trans/trans_shift.c.inc b/target/loongarch/insn_trans/trans_shift.c.inc
new file mode 100644
index 0000000..5260af2
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_shift.c.inc
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static void gen_sll_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x1f);
+    tcg_gen_shl_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_srl_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x1f);
+    tcg_gen_shr_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_sra_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x1f);
+    tcg_gen_sar_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_sll_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x3f);
+    tcg_gen_shl_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_srl_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x3f);
+    tcg_gen_shr_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_sra_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x3f);
+    tcg_gen_sar_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static void gen_rotr_w(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv_i32 t1 = tcg_temp_new_i32();
+    TCGv_i32 t2 = tcg_temp_new_i32();
+    TCGv t0 = tcg_temp_new();
+
+    tcg_gen_andi_tl(t0, src2, 0x1f);
+
+    tcg_gen_trunc_tl_i32(t1, src1);
+    tcg_gen_trunc_tl_i32(t2, t0);
+
+    tcg_gen_rotr_i32(t1, t1, t2);
+    tcg_gen_ext_i32_tl(dest, t1);
+
+    tcg_temp_free_i32(t1);
+    tcg_temp_free_i32(t2);
+    tcg_temp_free(t0);
+}
+
+static void gen_rotr_d(TCGv dest, TCGv src1, TCGv src2)
+{
+    TCGv t0 = tcg_temp_new();
+    tcg_gen_andi_tl(t0, src2, 0x3f);
+    tcg_gen_rotr_tl(dest, src1, t0);
+    tcg_temp_free(t0);
+}
+
+static bool trans_srai_w(DisasContext *ctx, arg_srai_w *a)
+{
+    TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_ZERO);
+
+    tcg_gen_sextract_tl(dest, src1, a->imm, 32 - a->imm);
+    gen_set_gpr(a->rd, dest, EXT_NONE);
+
+    return true;
+}
+
+TRANS(sll_w, gen_rrr, EXT_ZERO, EXT_NONE, EXT_SIGN, gen_sll_w)
+TRANS(srl_w, gen_rrr, EXT_ZERO, EXT_NONE, EXT_SIGN, gen_srl_w)
+TRANS(sra_w, gen_rrr, EXT_SIGN, EXT_NONE, EXT_SIGN, gen_sra_w)
+TRANS(sll_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_sll_d)
+TRANS(srl_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_srl_d)
+TRANS(sra_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_sra_d)
+TRANS(rotr_w, gen_rrr, EXT_ZERO, EXT_NONE, EXT_SIGN, gen_rotr_w)
+TRANS(rotr_d, gen_rrr, EXT_NONE, EXT_NONE, EXT_NONE, gen_rotr_d)
+TRANS(slli_w, gen_rri_c, EXT_NONE, EXT_SIGN, tcg_gen_shli_tl)
+TRANS(slli_d, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_shli_tl)
+TRANS(srli_w, gen_rri_c, EXT_ZERO, EXT_SIGN, tcg_gen_shri_tl)
+TRANS(srli_d, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_shri_tl)
+TRANS(srai_d, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_sari_tl)
+TRANS(rotri_w, gen_rri_v, EXT_NONE, EXT_NONE, gen_rotr_w)
+TRANS(rotri_d, gen_rri_c, EXT_NONE, EXT_NONE, tcg_gen_rotri_tl)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
new file mode 100644
index 0000000..3fdc6e1
--- /dev/null
+++ b/target/loongarch/insns.decode
@@ -0,0 +1,486 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# LoongArch instruction decode definitions.
+#
+# Copyright (c) 2021 Loongson Technology Corporation Limited
+#
+
+#
+# Fields
+#
+%i14s2     10:s14       !function=shl_2
+%sa2p1     15:2         !function=plus_1
+%offs21    0:s5 10:16   !function=shl_2
+%offs16    10:s16       !function=shl_2
+%offs26    0:s10 10:16  !function=shl_2
+
+#
+# Argument sets
+#
+&i            imm
+&r_i          rd imm
+&rr           rd rj
+&rr_jk        rj rk
+&rrr          rd rj rk
+&rr_i         rd rj imm
+&hint_r_i     hint rj imm
+&rrr_sa       rd rj rk sa
+&rr_ms_ls     rd rj ms ls
+&ff           fd fj
+&fff          fd fj fk
+&ffff         fd fj fk fa
+&cff_fcond    cd fj fk fcond
+&fffc         fd fj fk ca
+&fr           fd rj
+&rf           rd fj
+&fcsrd_r      fcsrd rj
+&r_fcsrs      rd fcsrs
+&cf           cd fj
+&fc           fd cj
+&cr           cd rj
+&rc           rd cj
+&frr          fd rj rk
+&fr_i         fd rj imm
+&r_offs       rj offs
+&c_offs       cj offs
+&offs         offs
+&rr_offs      rj rd offs
+&r_csr        rd csr
+&rr_csr       rd rj csr
+&empty
+&i_rr         imm rj rk
+&cop_r_i      cop rj imm
+&j_i          rj imm
+
+#
+# Formats
+#
+@i15                       .... ........ ..... imm:15    &i
+@rr               .... ........ ..... ..... rj:5 rd:5    &rr
+@rr_jk            .... ........ ..... rk:5 rj:5 .....    &rr_jk
+@rrr               .... ........ ..... rk:5 rj:5 rd:5    &rrr
+@r_i20                          .... ... imm:s20 rd:5    &r_i
+@rr_ui5           .... ........ ..... imm:5 rj:5 rd:5    &rr_i
+@rr_ui6            .... ........ .... imm:6 rj:5 rd:5    &rr_i
+@rr_ui8              .. ........ .... imm:8 rj:5 rd:5    &rr_i
+@rr_i12                 .... ...... imm:s12 rj:5 rd:5    &rr_i
+@rr_ui12                 .... ...... imm:12 rj:5 rd:5    &rr_i
+@rr_i14s2         .... ....  .............. rj:5 rd:5    &rr_i imm=%i14s2
+@rr_i16                     .... .. imm:s16 rj:5 rd:5    &rr_i
+@hint_r_i12           .... ...... imm:s12 rj:5 hint:5    &hint_r_i
+@rrr_sa2p1        .... ........ ... .. rk:5 rj:5 rd:5    &rrr_sa  sa=%sa2p1
+@rrr_sa2        .... ........ ... sa:2 rk:5 rj:5 rd:5    &rrr_sa
+@rrr_sa3         .... ........ .. sa:3 rk:5 rj:5 rd:5    &rrr_sa
+@rr_2bw            .... ....... ms:5 . ls:5 rj:5 rd:5    &rr_ms_ls
+@rr_2bd               .... ...... ms:6 ls:6 rj:5 rd:5    &rr_ms_ls
+@ff               .... ........ ..... ..... fj:5 fd:5    &ff
+@fff               .... ........ ..... fk:5 fj:5 fd:5    &fff
+@ffff               .... ........ fa:5 fk:5 fj:5 fd:5    &ffff
+@cff_fcond    .... ........ fcond:5 fk:5 fj:5 .. cd:3    &cff_fcond
+@fffc            .... ........ .. ca:3 fk:5 fj:5 fd:5    &fffc
+@fr               .... ........ ..... ..... rj:5 fd:5    &fr
+@rf               .... ........ ..... ..... fj:5 rd:5    &rf
+@fcsrd_r       .... ........ ..... ..... rj:5 fcsrd:5    &fcsrd_r
+@r_fcsrs       .... ........ ..... ..... fcsrs:5 rd:5    &r_fcsrs
+@cf            .... ........ ..... ..... fj:5 .. cd:3    &cf
+@fc            .... ........ ..... ..... .. cj:3 fd:5    &fc
+@cr            .... ........ ..... ..... rj:5 .. cd:3    &cr
+@rc            .... ........ ..... ..... .. cj:3 rd:5    &rc
+@frr               .... ........ ..... rk:5 rj:5 fd:5    &frr
+@fr_i12                 .... ...... imm:s12 rj:5 fd:5    &fr_i
+@r_offs21         .... .. ................ rj:5 .....    &r_offs      offs=%offs21
+@c_offs21      .... .. ................ .. cj:3 .....    &c_offs      offs=%offs21
+@offs26            .... .. ..........................    &offs        offs=%offs26
+@rr_offs16         .... .. ................ rj:5 rd:5    &rr_offs     offs=%offs16
+@r_csr                    .... .... csr:14 ..... rd:5    &r_csr
+@rr_csr                    .... .... csr:14 rj:5 rd:5    &rr_csr
+@empty          .... ........ ..... ..... ..... .....    &empty
+@i_rr             ...... ...... ..... rk:5 rj:5 imm:5    &i_rr
+@cop_r_i              .... ......  imm:s12 rj:5 cop:5    &cop_r_i
+@j_i               .... ........ .. imm:8 rj:5 .....    &j_i
+
+#
+# Fixed point arithmetic operation instruction
+#
+add_w           0000 00000001 00000 ..... ..... .....    @rrr
+add_d           0000 00000001 00001 ..... ..... .....    @rrr
+sub_w           0000 00000001 00010 ..... ..... .....    @rrr
+sub_d           0000 00000001 00011 ..... ..... .....    @rrr
+slt             0000 00000001 00100 ..... ..... .....    @rrr
+sltu            0000 00000001 00101 ..... ..... .....    @rrr
+slti            0000 001000 ............ ..... .....     @rr_i12
+sltui           0000 001001 ............ ..... .....     @rr_i12
+nor             0000 00000001 01000 ..... ..... .....    @rrr
+and             0000 00000001 01001 ..... ..... .....    @rrr
+or              0000 00000001 01010 ..... ..... .....    @rrr
+xor             0000 00000001 01011 ..... ..... .....    @rrr
+orn             0000 00000001 01100 ..... ..... .....    @rrr
+andn            0000 00000001 01101 ..... ..... .....    @rrr
+mul_w           0000 00000001 11000 ..... ..... .....    @rrr
+mulh_w          0000 00000001 11001 ..... ..... .....    @rrr
+mulh_wu         0000 00000001 11010 ..... ..... .....    @rrr
+mul_d           0000 00000001 11011 ..... ..... .....    @rrr
+mulh_d          0000 00000001 11100 ..... ..... .....    @rrr
+mulh_du         0000 00000001 11101 ..... ..... .....    @rrr
+mulw_d_w        0000 00000001 11110 ..... ..... .....    @rrr
+mulw_d_wu       0000 00000001 11111 ..... ..... .....    @rrr
+div_w           0000 00000010 00000 ..... ..... .....    @rrr
+mod_w           0000 00000010 00001 ..... ..... .....    @rrr
+div_wu          0000 00000010 00010 ..... ..... .....    @rrr
+mod_wu          0000 00000010 00011 ..... ..... .....    @rrr
+div_d           0000 00000010 00100 ..... ..... .....    @rrr
+mod_d           0000 00000010 00101 ..... ..... .....    @rrr
+div_du          0000 00000010 00110 ..... ..... .....    @rrr
+mod_du          0000 00000010 00111 ..... ..... .....    @rrr
+alsl_w          0000 00000000 010 .. ..... ..... .....   @rrr_sa2p1
+alsl_wu         0000 00000000 011 .. ..... ..... .....   @rrr_sa2p1
+alsl_d          0000 00000010 110 .. ..... ..... .....   @rrr_sa2p1
+lu12i_w         0001 010 .................... .....      @r_i20
+lu32i_d         0001 011 .................... .....      @r_i20
+lu52i_d         0000 001100 ............ ..... .....     @rr_i12
+pcaddi          0001 100 .................... .....      @r_i20
+pcalau12i       0001 101 .................... .....      @r_i20
+pcaddu12i       0001 110 .................... .....      @r_i20
+pcaddu18i       0001 111 .................... .....      @r_i20
+addi_w          0000 001010 ............ ..... .....     @rr_i12
+addi_d          0000 001011 ............ ..... .....     @rr_i12
+addu16i_d       0001 00 ................ ..... .....     @rr_i16
+andi            0000 001101 ............ ..... .....     @rr_ui12
+ori             0000 001110 ............ ..... .....     @rr_ui12
+xori            0000 001111 ............ ..... .....     @rr_ui12
+
+#
+# Fixed point shift operation instruction
+#
+sll_w           0000 00000001 01110 ..... ..... .....    @rrr
+srl_w           0000 00000001 01111 ..... ..... .....    @rrr
+sra_w           0000 00000001 10000 ..... ..... .....    @rrr
+sll_d           0000 00000001 10001 ..... ..... .....    @rrr
+srl_d           0000 00000001 10010 ..... ..... .....    @rrr
+sra_d           0000 00000001 10011 ..... ..... .....    @rrr
+rotr_w          0000 00000001 10110 ..... ..... .....    @rrr
+rotr_d          0000 00000001 10111 ..... ..... .....    @rrr
+slli_w          0000 00000100 00001 ..... ..... .....    @rr_ui5
+slli_d          0000 00000100 0001 ...... ..... .....    @rr_ui6
+srli_w          0000 00000100 01001 ..... ..... .....    @rr_ui5
+srli_d          0000 00000100 0101 ...... ..... .....    @rr_ui6
+srai_w          0000 00000100 10001 ..... ..... .....    @rr_ui5
+srai_d          0000 00000100 1001 ...... ..... .....    @rr_ui6
+rotri_w         0000 00000100 11001 ..... ..... .....    @rr_ui5
+rotri_d         0000 00000100 1101 ...... ..... .....    @rr_ui6
+
+#
+# Fixed point bit operation instruction
+#
+ext_w_h         0000 00000000 00000 10110 ..... .....    @rr
+ext_w_b         0000 00000000 00000 10111 ..... .....    @rr
+clo_w           0000 00000000 00000 00100 ..... .....    @rr
+clz_w           0000 00000000 00000 00101 ..... .....    @rr
+cto_w           0000 00000000 00000 00110 ..... .....    @rr
+ctz_w           0000 00000000 00000 00111 ..... .....    @rr
+clo_d           0000 00000000 00000 01000 ..... .....    @rr
+clz_d           0000 00000000 00000 01001 ..... .....    @rr
+cto_d           0000 00000000 00000 01010 ..... .....    @rr
+ctz_d           0000 00000000 00000 01011 ..... .....    @rr
+revb_2h         0000 00000000 00000 01100 ..... .....    @rr
+revb_4h         0000 00000000 00000 01101 ..... .....    @rr
+revb_2w         0000 00000000 00000 01110 ..... .....    @rr
+revb_d          0000 00000000 00000 01111 ..... .....    @rr
+revh_2w         0000 00000000 00000 10000 ..... .....    @rr
+revh_d          0000 00000000 00000 10001 ..... .....    @rr
+bitrev_4b       0000 00000000 00000 10010 ..... .....    @rr
+bitrev_8b       0000 00000000 00000 10011 ..... .....    @rr
+bitrev_w        0000 00000000 00000 10100 ..... .....    @rr
+bitrev_d        0000 00000000 00000 10101 ..... .....    @rr
+bytepick_w      0000 00000000 100 .. ..... ..... .....   @rrr_sa2
+bytepick_d      0000 00000000 11 ... ..... ..... .....   @rrr_sa3
+maskeqz         0000 00000001 00110 ..... ..... .....    @rrr
+masknez         0000 00000001 00111 ..... ..... .....    @rrr
+bstrins_w       0000 0000011 ..... 0 ..... ..... .....   @rr_2bw
+bstrpick_w      0000 0000011 ..... 1 ..... ..... .....   @rr_2bw
+bstrins_d       0000 000010 ...... ...... ..... .....    @rr_2bd
+bstrpick_d      0000 000011 ...... ...... ..... .....    @rr_2bd
+
+#
+# Fixed point load/store instruction
+#
+ld_b            0010 100000 ............ ..... .....     @rr_i12
+ld_h            0010 100001 ............ ..... .....     @rr_i12
+ld_w            0010 100010 ............ ..... .....     @rr_i12
+ld_d            0010 100011 ............ ..... .....     @rr_i12
+st_b            0010 100100 ............ ..... .....     @rr_i12
+st_h            0010 100101 ............ ..... .....     @rr_i12
+st_w            0010 100110 ............ ..... .....     @rr_i12
+st_d            0010 100111 ............ ..... .....     @rr_i12
+ld_bu           0010 101000 ............ ..... .....     @rr_i12
+ld_hu           0010 101001 ............ ..... .....     @rr_i12
+ld_wu           0010 101010 ............ ..... .....     @rr_i12
+ldx_b           0011 10000000 00000 ..... ..... .....    @rrr
+ldx_h           0011 10000000 01000 ..... ..... .....    @rrr
+ldx_w           0011 10000000 10000 ..... ..... .....    @rrr
+ldx_d           0011 10000000 11000 ..... ..... .....    @rrr
+stx_b           0011 10000001 00000 ..... ..... .....    @rrr
+stx_h           0011 10000001 01000 ..... ..... .....    @rrr
+stx_w           0011 10000001 10000 ..... ..... .....    @rrr
+stx_d           0011 10000001 11000 ..... ..... .....    @rrr
+ldx_bu          0011 10000010 00000 ..... ..... .....    @rrr
+ldx_hu          0011 10000010 01000 ..... ..... .....    @rrr
+ldx_wu          0011 10000010 10000 ..... ..... .....    @rrr
+preld           0010 101011 ............ ..... .....     @hint_r_i12
+dbar            0011 10000111 00100 ...............      @i15
+ibar            0011 10000111 00101 ...............      @i15
+ldptr_w         0010 0100 .............. ..... .....     @rr_i14s2
+stptr_w         0010 0101 .............. ..... .....     @rr_i14s2
+ldptr_d         0010 0110 .............. ..... .....     @rr_i14s2
+stptr_d         0010 0111 .............. ..... .....     @rr_i14s2
+ldgt_b          0011 10000111 10000 ..... ..... .....    @rrr
+ldgt_h          0011 10000111 10001 ..... ..... .....    @rrr
+ldgt_w          0011 10000111 10010 ..... ..... .....    @rrr
+ldgt_d          0011 10000111 10011 ..... ..... .....    @rrr
+ldle_b          0011 10000111 10100 ..... ..... .....    @rrr
+ldle_h          0011 10000111 10101 ..... ..... .....    @rrr
+ldle_w          0011 10000111 10110 ..... ..... .....    @rrr
+ldle_d          0011 10000111 10111 ..... ..... .....    @rrr
+stgt_b          0011 10000111 11000 ..... ..... .....    @rrr
+stgt_h          0011 10000111 11001 ..... ..... .....    @rrr
+stgt_w          0011 10000111 11010 ..... ..... .....    @rrr
+stgt_d          0011 10000111 11011 ..... ..... .....    @rrr
+stle_b          0011 10000111 11100 ..... ..... .....    @rrr
+stle_h          0011 10000111 11101 ..... ..... .....    @rrr
+stle_w          0011 10000111 11110 ..... ..... .....    @rrr
+stle_d          0011 10000111 11111 ..... ..... .....    @rrr
+
+#
+# Fixed point atomic instruction
+#
+ll_w            0010 0000 .............. ..... .....     @rr_i14s2
+sc_w            0010 0001 .............. ..... .....     @rr_i14s2
+ll_d            0010 0010 .............. ..... .....     @rr_i14s2
+sc_d            0010 0011 .............. ..... .....     @rr_i14s2
+amswap_w        0011 10000110 00000 ..... ..... .....    @rrr
+amswap_d        0011 10000110 00001 ..... ..... .....    @rrr
+amadd_w         0011 10000110 00010 ..... ..... .....    @rrr
+amadd_d         0011 10000110 00011 ..... ..... .....    @rrr
+amand_w         0011 10000110 00100 ..... ..... .....    @rrr
+amand_d         0011 10000110 00101 ..... ..... .....    @rrr
+amor_w          0011 10000110 00110 ..... ..... .....    @rrr
+amor_d          0011 10000110 00111 ..... ..... .....    @rrr
+amxor_w         0011 10000110 01000 ..... ..... .....    @rrr
+amxor_d         0011 10000110 01001 ..... ..... .....    @rrr
+ammax_w         0011 10000110 01010 ..... ..... .....    @rrr
+ammax_d         0011 10000110 01011 ..... ..... .....    @rrr
+ammin_w         0011 10000110 01100 ..... ..... .....    @rrr
+ammin_d         0011 10000110 01101 ..... ..... .....    @rrr
+ammax_wu        0011 10000110 01110 ..... ..... .....    @rrr
+ammax_du        0011 10000110 01111 ..... ..... .....    @rrr
+ammin_wu        0011 10000110 10000 ..... ..... .....    @rrr
+ammin_du        0011 10000110 10001 ..... ..... .....    @rrr
+amswap_db_w     0011 10000110 10010 ..... ..... .....    @rrr
+amswap_db_d     0011 10000110 10011 ..... ..... .....    @rrr
+amadd_db_w      0011 10000110 10100 ..... ..... .....    @rrr
+amadd_db_d      0011 10000110 10101 ..... ..... .....    @rrr
+amand_db_w      0011 10000110 10110 ..... ..... .....    @rrr
+amand_db_d      0011 10000110 10111 ..... ..... .....    @rrr
+amor_db_w       0011 10000110 11000 ..... ..... .....    @rrr
+amor_db_d       0011 10000110 11001 ..... ..... .....    @rrr
+amxor_db_w      0011 10000110 11010 ..... ..... .....    @rrr
+amxor_db_d      0011 10000110 11011 ..... ..... .....    @rrr
+ammax_db_w      0011 10000110 11100 ..... ..... .....    @rrr
+ammax_db_d      0011 10000110 11101 ..... ..... .....    @rrr
+ammin_db_w      0011 10000110 11110 ..... ..... .....    @rrr
+ammin_db_d      0011 10000110 11111 ..... ..... .....    @rrr
+ammax_db_wu     0011 10000111 00000 ..... ..... .....    @rrr
+ammax_db_du     0011 10000111 00001 ..... ..... .....    @rrr
+ammin_db_wu     0011 10000111 00010 ..... ..... .....    @rrr
+ammin_db_du     0011 10000111 00011 ..... ..... .....    @rrr
+
+#
+# Fixed point extra instruction
+#
+crc_w_b_w       0000 00000010 01000 ..... ..... .....    @rrr
+crc_w_h_w       0000 00000010 01001 ..... ..... .....    @rrr
+crc_w_w_w       0000 00000010 01010 ..... ..... .....    @rrr
+crc_w_d_w       0000 00000010 01011 ..... ..... .....    @rrr
+crcc_w_b_w      0000 00000010 01100 ..... ..... .....    @rrr
+crcc_w_h_w      0000 00000010 01101 ..... ..... .....    @rrr
+crcc_w_w_w      0000 00000010 01110 ..... ..... .....    @rrr
+crcc_w_d_w      0000 00000010 01111 ..... ..... .....    @rrr
+break           0000 00000010 10100 ...............      @i15
+syscall         0000 00000010 10110 ...............      @i15
+asrtle_d        0000 00000000 00010 ..... ..... 00000    @rr_jk
+asrtgt_d        0000 00000000 00011 ..... ..... 00000    @rr_jk
+rdtimel_w       0000 00000000 00000 11000 ..... .....    @rr
+rdtimeh_w       0000 00000000 00000 11001 ..... .....    @rr
+rdtime_d        0000 00000000 00000 11010 ..... .....    @rr
+cpucfg          0000 00000000 00000 11011 ..... .....    @rr
+
+#
+# Floating point arithmetic operation instruction
+#
+fadd_s          0000 00010000 00001 ..... ..... .....    @fff
+fadd_d          0000 00010000 00010 ..... ..... .....    @fff
+fsub_s          0000 00010000 00101 ..... ..... .....    @fff
+fsub_d          0000 00010000 00110 ..... ..... .....    @fff
+fmul_s          0000 00010000 01001 ..... ..... .....    @fff
+fmul_d          0000 00010000 01010 ..... ..... .....    @fff
+fdiv_s          0000 00010000 01101 ..... ..... .....    @fff
+fdiv_d          0000 00010000 01110 ..... ..... .....    @fff
+fmadd_s         0000 10000001 ..... ..... ..... .....    @ffff
+fmadd_d         0000 10000010 ..... ..... ..... .....    @ffff
+fmsub_s         0000 10000101 ..... ..... ..... .....    @ffff
+fmsub_d         0000 10000110 ..... ..... ..... .....    @ffff
+fnmadd_s        0000 10001001 ..... ..... ..... .....    @ffff
+fnmadd_d        0000 10001010 ..... ..... ..... .....    @ffff
+fnmsub_s        0000 10001101 ..... ..... ..... .....    @ffff
+fnmsub_d        0000 10001110 ..... ..... ..... .....    @ffff
+fmax_s          0000 00010000 10001 ..... ..... .....    @fff
+fmax_d          0000 00010000 10010 ..... ..... .....    @fff
+fmin_s          0000 00010000 10101 ..... ..... .....    @fff
+fmin_d          0000 00010000 10110 ..... ..... .....    @fff
+fmaxa_s         0000 00010000 11001 ..... ..... .....    @fff
+fmaxa_d         0000 00010000 11010 ..... ..... .....    @fff
+fmina_s         0000 00010000 11101 ..... ..... .....    @fff
+fmina_d         0000 00010000 11110 ..... ..... .....    @fff
+fabs_s          0000 00010001 01000 00001 ..... .....    @ff
+fabs_d          0000 00010001 01000 00010 ..... .....    @ff
+fneg_s          0000 00010001 01000 00101 ..... .....    @ff
+fneg_d          0000 00010001 01000 00110 ..... .....    @ff
+fsqrt_s         0000 00010001 01000 10001 ..... .....    @ff
+fsqrt_d         0000 00010001 01000 10010 ..... .....    @ff
+frecip_s        0000 00010001 01000 10101 ..... .....    @ff
+frecip_d        0000 00010001 01000 10110 ..... .....    @ff
+frsqrt_s        0000 00010001 01000 11001 ..... .....    @ff
+frsqrt_d        0000 00010001 01000 11010 ..... .....    @ff
+fscaleb_s       0000 00010001 00001 ..... ..... .....    @fff
+fscaleb_d       0000 00010001 00010 ..... ..... .....    @fff
+flogb_s         0000 00010001 01000 01001 ..... .....    @ff
+flogb_d         0000 00010001 01000 01010 ..... .....    @ff
+fcopysign_s     0000 00010001 00101 ..... ..... .....    @fff
+fcopysign_d     0000 00010001 00110 ..... ..... .....    @fff
+fclass_s        0000 00010001 01000 01101 ..... .....    @ff
+fclass_d        0000 00010001 01000 01110 ..... .....    @ff
+
+#
+# Floating point compare instruction
+#
+fcmp_cond_s     0000 11000001 ..... ..... ..... 00 ...   @cff_fcond
+fcmp_cond_d     0000 11000010 ..... ..... ..... 00 ...   @cff_fcond
+
+#
+# Floating point conversion instruction
+#
+fcvt_s_d        0000 00010001 10010 00110 ..... .....    @ff
+fcvt_d_s        0000 00010001 10010 01001 ..... .....    @ff
+ftintrm_w_s     0000 00010001 10100 00001 ..... .....    @ff
+ftintrm_w_d     0000 00010001 10100 00010 ..... .....    @ff
+ftintrm_l_s     0000 00010001 10100 01001 ..... .....    @ff
+ftintrm_l_d     0000 00010001 10100 01010 ..... .....    @ff
+ftintrp_w_s     0000 00010001 10100 10001 ..... .....    @ff
+ftintrp_w_d     0000 00010001 10100 10010 ..... .....    @ff
+ftintrp_l_s     0000 00010001 10100 11001 ..... .....    @ff
+ftintrp_l_d     0000 00010001 10100 11010 ..... .....    @ff
+ftintrz_w_s     0000 00010001 10101 00001 ..... .....    @ff
+ftintrz_w_d     0000 00010001 10101 00010 ..... .....    @ff
+ftintrz_l_s     0000 00010001 10101 01001 ..... .....    @ff
+ftintrz_l_d     0000 00010001 10101 01010 ..... .....    @ff
+ftintrne_w_s    0000 00010001 10101 10001 ..... .....    @ff
+ftintrne_w_d    0000 00010001 10101 10010 ..... .....    @ff
+ftintrne_l_s    0000 00010001 10101 11001 ..... .....    @ff
+ftintrne_l_d    0000 00010001 10101 11010 ..... .....    @ff
+ftint_w_s       0000 00010001 10110 00001 ..... .....    @ff
+ftint_w_d       0000 00010001 10110 00010 ..... .....    @ff
+ftint_l_s       0000 00010001 10110 01001 ..... .....    @ff
+ftint_l_d       0000 00010001 10110 01010 ..... .....    @ff
+ffint_s_w       0000 00010001 11010 00100 ..... .....    @ff
+ffint_s_l       0000 00010001 11010 00110 ..... .....    @ff
+ffint_d_w       0000 00010001 11010 01000 ..... .....    @ff
+ffint_d_l       0000 00010001 11010 01010 ..... .....    @ff
+frint_s         0000 00010001 11100 10001 ..... .....    @ff
+frint_d         0000 00010001 11100 10010 ..... .....    @ff
+
+#
+# Floating point move instruction
+#
+fmov_s          0000 00010001 01001 00101 ..... .....    @ff
+fmov_d          0000 00010001 01001 00110 ..... .....    @ff
+fsel            0000 11010000 00 ... ..... ..... .....   @fffc
+movgr2fr_w      0000 00010001 01001 01001 ..... .....    @fr
+movgr2fr_d      0000 00010001 01001 01010 ..... .....    @fr
+movgr2frh_w     0000 00010001 01001 01011 ..... .....    @fr
+movfr2gr_s      0000 00010001 01001 01101 ..... .....    @rf
+movfr2gr_d      0000 00010001 01001 01110 ..... .....    @rf
+movfrh2gr_s     0000 00010001 01001 01111 ..... .....    @rf
+movgr2fcsr      0000 00010001 01001 10000 ..... .....    @fcsrd_r
+movfcsr2gr      0000 00010001 01001 10010 ..... .....    @r_fcsrs
+movfr2cf        0000 00010001 01001 10100 ..... 00 ...   @cf
+movcf2fr        0000 00010001 01001 10101 00 ... .....   @fc
+movgr2cf        0000 00010001 01001 10110 ..... 00 ...   @cr
+movcf2gr        0000 00010001 01001 10111 00 ... .....   @rc
+
+#
+# Floating point load/store instruction
+#
+fld_s           0010 101100 ............ ..... .....     @fr_i12
+fst_s           0010 101101 ............ ..... .....     @fr_i12
+fld_d           0010 101110 ............ ..... .....     @fr_i12
+fst_d           0010 101111 ............ ..... .....     @fr_i12
+fldx_s          0011 10000011 00000 ..... ..... .....    @frr
+fldx_d          0011 10000011 01000 ..... ..... .....    @frr
+fstx_s          0011 10000011 10000 ..... ..... .....    @frr
+fstx_d          0011 10000011 11000 ..... ..... .....    @frr
+fldgt_s         0011 10000111 01000 ..... ..... .....    @frr
+fldgt_d         0011 10000111 01001 ..... ..... .....    @frr
+fldle_s         0011 10000111 01010 ..... ..... .....    @frr
+fldle_d         0011 10000111 01011 ..... ..... .....    @frr
+fstgt_s         0011 10000111 01100 ..... ..... .....    @frr
+fstgt_d         0011 10000111 01101 ..... ..... .....    @frr
+fstle_s         0011 10000111 01110 ..... ..... .....    @frr
+fstle_d         0011 10000111 01111 ..... ..... .....    @frr
+
+#
+# Branch instructions
+#
+beqz            0100 00 ................ ..... .....     @r_offs21
+bnez            0100 01 ................ ..... .....     @r_offs21
+bceqz           0100 10 ................ 00 ... .....    @c_offs21
+bcnez           0100 10 ................ 01 ... .....    @c_offs21
+jirl            0100 11 ................ ..... .....     @rr_offs16
+b               0101 00 ..........................       @offs26
+bl              0101 01 ..........................       @offs26
+beq             0101 10 ................ ..... .....     @rr_offs16
+bne             0101 11 ................ ..... .....     @rr_offs16
+blt             0110 00 ................ ..... .....     @rr_offs16
+bge             0110 01 ................ ..... .....     @rr_offs16
+bltu            0110 10 ................ ..... .....     @rr_offs16
+bgeu            0110 11 ................ ..... .....     @rr_offs16
+
+#
+# Core instructions
+#
+{
+  csrrd             0000 0100 .............. 00000 .....     @r_csr
+  csrwr             0000 0100 .............. 00001 .....     @r_csr
+  csrxchg           0000 0100 .............. ..... .....     @rr_csr
+}
+
+iocsrrd_b        0000 01100100 10000 00000 ..... .....    @rr
+iocsrrd_h        0000 01100100 10000 00001 ..... .....    @rr
+iocsrrd_w        0000 01100100 10000 00010 ..... .....    @rr
+iocsrrd_d        0000 01100100 10000 00011 ..... .....    @rr
+iocsrwr_b        0000 01100100 10000 00100 ..... .....    @rr
+iocsrwr_h        0000 01100100 10000 00101 ..... .....    @rr
+iocsrwr_w        0000 01100100 10000 00110 ..... .....    @rr
+iocsrwr_d        0000 01100100 10000 00111 ..... .....    @rr
+tlbsrch          0000 01100100 10000 01010 00000 00000    @empty
+tlbrd            0000 01100100 10000 01011 00000 00000    @empty
+tlbwr            0000 01100100 10000 01100 00000 00000    @empty
+tlbfill          0000 01100100 10000 01101 00000 00000    @empty
+tlbclr           0000 01100100 10000 01000 00000 00000    @empty
+tlbflush         0000 01100100 10000 01001 00000 00000    @empty
+invtlb           0000 01100100 10011 ..... ..... .....    @i_rr
+cacop            0000 011000 ............ ..... .....     @cop_r_i
+lddir            0000 01100100 00 ........ ..... .....    @rr_ui8
+ldpte            0000 01100100 01 ........ ..... 00000    @j_i
+ertn             0000 01100100 10000 01110 00000 00000    @empty
+idle             0000 01100100 10001 ...............      @i15
+dbcl             0000 00000010 10101 ...............      @i15
diff --git a/target/loongarch/internals.h b/target/loongarch/internals.h
new file mode 100644
index 0000000..9d50fbd
--- /dev/null
+++ b/target/loongarch/internals.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU -- internal functions and types
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_INTERNALS_H
+#define LOONGARCH_INTERNALS_H
+
+#define FCMP_LT   0b0001  /* fp0 < fp1 */
+#define FCMP_EQ   0b0010  /* fp0 = fp1 */
+#define FCMP_UN   0b0100  /* unordered */
+#define FCMP_GT   0b1000  /* fp0 > fp1 */
+
+#define TARGET_PHYS_MASK MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS)
+#define TARGET_VIRT_MASK MAKE_64BIT_MASK(0, TARGET_VIRT_ADDR_SPACE_BITS)
+
+/* Global bit used for lddir/ldpte */
+#define LOONGARCH_PAGE_HUGE_SHIFT   6
+/* Global bit for huge page */
+#define LOONGARCH_HGLOBAL_SHIFT     12
+
+void loongarch_translate_init(void);
+
+void loongarch_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
+
+void G_NORETURN do_raise_exception(CPULoongArchState *env,
+                                   uint32_t exception,
+                                   uintptr_t pc);
+
+const char *loongarch_exception_name(int32_t exception);
+
+void restore_fp_status(CPULoongArchState *env);
+
+extern const VMStateDescription vmstate_loongarch_cpu;
+
+void loongarch_cpu_set_irq(void *opaque, int irq, int level);
+
+void loongarch_constant_timer_cb(void *opaque);
+uint64_t cpu_loongarch_get_constant_timer_counter(LoongArchCPU *cpu);
+uint64_t cpu_loongarch_get_constant_timer_ticks(LoongArchCPU *cpu);
+void cpu_loongarch_store_constant_timer_config(LoongArchCPU *cpu,
+                                               uint64_t value);
+
+bool loongarch_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+                            MMUAccessType access_type, int mmu_idx,
+                            bool probe, uintptr_t retaddr);
+
+hwaddr loongarch_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
+
+int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n);
+int loongarch_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n);
+void loongarch_cpu_register_gdb_regs_for_features(CPUState *cs);
+
+#endif
diff --git a/target/loongarch/iocsr_helper.c b/target/loongarch/iocsr_helper.c
new file mode 100644
index 0000000..0e9c537
--- /dev/null
+++ b/target/loongarch/iocsr_helper.c
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * Helpers for IOCSR reads/writes
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "cpu.h"
+#include "qemu/host-utils.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "tcg/tcg-ldst.h"
+
+uint64_t helper_iocsrrd_b(CPULoongArchState *env, target_ulong r_addr)
+{
+    return address_space_ldub(&env->address_space_iocsr, r_addr,
+                              MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+uint64_t helper_iocsrrd_h(CPULoongArchState *env, target_ulong r_addr)
+{
+    return address_space_lduw(&env->address_space_iocsr, r_addr,
+                              MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+uint64_t helper_iocsrrd_w(CPULoongArchState *env, target_ulong r_addr)
+{
+    return address_space_ldl(&env->address_space_iocsr, r_addr,
+                             MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+uint64_t helper_iocsrrd_d(CPULoongArchState *env, target_ulong r_addr)
+{
+    return address_space_ldq(&env->address_space_iocsr, r_addr,
+                             MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+void helper_iocsrwr_b(CPULoongArchState *env, target_ulong w_addr,
+                      target_ulong val)
+{
+    address_space_stb(&env->address_space_iocsr, w_addr,
+                      val, MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+void helper_iocsrwr_h(CPULoongArchState *env, target_ulong w_addr,
+                      target_ulong val)
+{
+    address_space_stw(&env->address_space_iocsr, w_addr,
+                      val, MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+void helper_iocsrwr_w(CPULoongArchState *env, target_ulong w_addr,
+                      target_ulong val)
+{
+    address_space_stl(&env->address_space_iocsr, w_addr,
+                      val, MEMTXATTRS_UNSPECIFIED, NULL);
+}
+
+void helper_iocsrwr_d(CPULoongArchState *env, target_ulong w_addr,
+                      target_ulong val)
+{
+    address_space_stq(&env->address_space_iocsr, w_addr,
+                      val, MEMTXATTRS_UNSPECIFIED, NULL);
+}
diff --git a/target/loongarch/machine.c b/target/loongarch/machine.c
new file mode 100644
index 0000000..b1e523e
--- /dev/null
+++ b/target/loongarch/machine.c
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch Machine State
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "migration/cpu.h"
+#include "internals.h"
+
+/* TLB state */
+const VMStateDescription vmstate_tlb = {
+    .name = "cpu/tlb",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT64(tlb_misc, LoongArchTLB),
+        VMSTATE_UINT64(tlb_entry0, LoongArchTLB),
+        VMSTATE_UINT64(tlb_entry1, LoongArchTLB),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+/* LoongArch CPU state */
+
+const VMStateDescription vmstate_loongarch_cpu = {
+    .name = "cpu",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = (VMStateField[]) {
+
+        VMSTATE_UINTTL_ARRAY(env.gpr, LoongArchCPU, 32),
+        VMSTATE_UINTTL(env.pc, LoongArchCPU),
+        VMSTATE_UINT64_ARRAY(env.fpr, LoongArchCPU, 32),
+        VMSTATE_UINT32(env.fcsr0, LoongArchCPU),
+        VMSTATE_BOOL_ARRAY(env.cf, LoongArchCPU, 8),
+
+        /* Remaining CSRs */
+        VMSTATE_UINT64(env.CSR_CRMD, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PRMD, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_EUEN, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MISC, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_ECFG, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_ESTAT, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_ERA, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_BADV, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_BADI, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_EENTRY, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBIDX, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBEHI, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBELO0, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBELO1, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_ASID, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PGDL, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PGDH, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PGD, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PWCL, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PWCH, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_STLBPS, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_RVACFG, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PRCFG1, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PRCFG2, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_PRCFG3, LoongArchCPU),
+        VMSTATE_UINT64_ARRAY(env.CSR_SAVE, LoongArchCPU, 16),
+        VMSTATE_UINT64(env.CSR_TID, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TCFG, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TVAL, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_CNTC, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TICLR, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_LLBCTL, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_IMPCTL1, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_IMPCTL2, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRENTRY, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRBADV, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRERA, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRSAVE, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRELO0, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRELO1, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBREHI, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_TLBRPRMD, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MERRCTL, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MERRINFO1, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MERRINFO2, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MERRENTRY, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MERRERA, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_MERRSAVE, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_CTAG, LoongArchCPU),
+        VMSTATE_UINT64_ARRAY(env.CSR_DMW, LoongArchCPU, 4),
+
+        /* Debug CSRs */
+        VMSTATE_UINT64(env.CSR_DBG, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_DERA, LoongArchCPU),
+        VMSTATE_UINT64(env.CSR_DSAVE, LoongArchCPU),
+        /* TLB */
+        VMSTATE_STRUCT_ARRAY(env.tlb, LoongArchCPU, LOONGARCH_TLB_MAX,
+                             0, vmstate_tlb, LoongArchTLB),
+
+        VMSTATE_END_OF_LIST()
+    },
+};
diff --git a/target/loongarch/meson.build b/target/loongarch/meson.build
new file mode 100644
index 0000000..6376f9e
--- /dev/null
+++ b/target/loongarch/meson.build
@@ -0,0 +1,30 @@
+gen = decodetree.process('insns.decode')
+
+loongarch_ss = ss.source_set()
+loongarch_ss.add(files(
+  'cpu.c',
+  'disas.c',
+))
+loongarch_tcg_ss = ss.source_set()
+loongarch_tcg_ss.add(gen)
+loongarch_tcg_ss.add(files(
+  'fpu_helper.c',
+  'op_helper.c',
+  'translate.c',
+  'gdbstub.c',
+))
+loongarch_tcg_ss.add(zlib)
+
+loongarch_softmmu_ss = ss.source_set()
+loongarch_softmmu_ss.add(files(
+  'machine.c',
+  'tlb_helper.c',
+  'constant_timer.c',
+  'csr_helper.c',
+  'iocsr_helper.c',
+))
+
+loongarch_ss.add_all(when: 'CONFIG_TCG', if_true: [loongarch_tcg_ss])
+
+target_arch += {'loongarch': loongarch_ss}
+target_softmmu_arch += {'loongarch': loongarch_softmmu_ss}
diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
new file mode 100644
index 0000000..d870498
--- /dev/null
+++ b/target/loongarch/op_helper.c
@@ -0,0 +1,133 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch emulation helpers for QEMU.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/main-loop.h"
+#include "cpu.h"
+#include "qemu/host-utils.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "internals.h"
+#include "qemu/crc32c.h"
+#include <zlib.h>
+#include "cpu-csr.h"
+
+/* Exceptions helpers */
+void helper_raise_exception(CPULoongArchState *env, uint32_t exception)
+{
+    do_raise_exception(env, exception, GETPC());
+}
+
+target_ulong helper_bitrev_w(target_ulong rj)
+{
+    return (int32_t)revbit32(rj);
+}
+
+target_ulong helper_bitrev_d(target_ulong rj)
+{
+    return revbit64(rj);
+}
+
+target_ulong helper_bitswap(target_ulong v)
+{
+    v = ((v >> 1) & (target_ulong)0x5555555555555555ULL) |
+        ((v & (target_ulong)0x5555555555555555ULL) << 1);
+    v = ((v >> 2) & (target_ulong)0x3333333333333333ULL) |
+        ((v & (target_ulong)0x3333333333333333ULL) << 2);
+    v = ((v >> 4) & (target_ulong)0x0F0F0F0F0F0F0F0FULL) |
+        ((v & (target_ulong)0x0F0F0F0F0F0F0F0FULL) << 4);
+    return v;
+}
+
+/* loongarch assert op */
+void helper_asrtle_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
+{
+    if (rj > rk) {
+        do_raise_exception(env, EXCCODE_ADEM, GETPC());
+    }
+}
+
+void helper_asrtgt_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
+{
+    if (rj <= rk) {
+        do_raise_exception(env, EXCCODE_ADEM, GETPC());
+    }
+}
+
+target_ulong helper_crc32(target_ulong val, target_ulong m, uint64_t sz)
+{
+    uint8_t buf[8];
+    target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
+
+    m &= mask;
+    stq_le_p(buf, m);
+    return (int32_t) (crc32(val ^ 0xffffffff, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_crc32c(target_ulong val, target_ulong m, uint64_t sz)
+{
+    uint8_t buf[8];
+    target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
+    m &= mask;
+    stq_le_p(buf, m);
+    return (int32_t) (crc32c(val, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_cpucfg(CPULoongArchState *env, target_ulong rj)
+{
+    return rj > 21 ? 0 : env->cpucfg[rj];
+}
+
+uint64_t helper_rdtime_d(CPULoongArchState *env)
+{
+    uint64_t plv;
+    LoongArchCPU *cpu = env_archcpu(env);
+
+    plv = FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV);
+    if (extract64(env->CSR_MISC, R_CSR_MISC_DRDTL_SHIFT + plv, 1)) {
+        do_raise_exception(env, EXCCODE_IPE, GETPC());
+    }
+
+    return cpu_loongarch_get_constant_timer_counter(cpu);
+}
+
+void helper_ertn(CPULoongArchState *env)
+{
+    uint64_t csr_pplv, csr_pie;
+    if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) {
+        csr_pplv = FIELD_EX64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PPLV);
+        csr_pie = FIELD_EX64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PIE);
+
+        env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 0);
+        env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 0);
+        env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 1);
+        env->pc = env->CSR_TLBRERA;
+        qemu_log_mask(CPU_LOG_INT, "%s: TLBRERA " TARGET_FMT_lx "\n",
+                      __func__, env->CSR_TLBRERA);
+    } else {
+        csr_pplv = FIELD_EX64(env->CSR_PRMD, CSR_PRMD, PPLV);
+        csr_pie = FIELD_EX64(env->CSR_PRMD, CSR_PRMD, PIE);
+
+        env->pc = env->CSR_ERA;
+        qemu_log_mask(CPU_LOG_INT, "%s: ERA " TARGET_FMT_lx "\n",
+                      __func__, env->CSR_ERA);
+    }
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, csr_pplv);
+    env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, csr_pie);
+
+    env->lladdr = 1;
+}
+
+void helper_idle(CPULoongArchState *env)
+{
+    CPUState *cs = env_cpu(env);
+
+    cs->halted = 1;
+    do_raise_exception(env, EXCP_HLT, 0);
+}
diff --git a/target/loongarch/tlb_helper.c b/target/loongarch/tlb_helper.c
new file mode 100644
index 0000000..bab19c7
--- /dev/null
+++ b/target/loongarch/tlb_helper.c
@@ -0,0 +1,763 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch TLB helpers
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/guest-random.h"
+
+#include "cpu.h"
+#include "internals.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "exec/log.h"
+#include "cpu-csr.h"
+
+enum {
+    TLBRET_MATCH = 0,
+    TLBRET_BADADDR = 1,
+    TLBRET_NOMATCH = 2,
+    TLBRET_INVALID = 3,
+    TLBRET_DIRTY = 4,
+    TLBRET_RI = 5,
+    TLBRET_XI = 6,
+    TLBRET_PE = 7,
+};
+
+static int loongarch_map_tlb_entry(CPULoongArchState *env, hwaddr *physical,
+                                   int *prot, target_ulong address,
+                                   int access_type, int index, int mmu_idx)
+{
+    LoongArchTLB *tlb = &env->tlb[index];
+    uint64_t plv = mmu_idx;
+    uint64_t tlb_entry, tlb_ppn;
+    uint8_t tlb_ps, n, tlb_v, tlb_d, tlb_plv, tlb_nx, tlb_nr, tlb_rplv;
+
+    if (index >= LOONGARCH_STLB) {
+        tlb_ps = FIELD_EX64(tlb->tlb_misc, TLB_MISC, PS);
+    } else {
+        tlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+    }
+    n = (address >> tlb_ps) & 0x1;/* Odd or even */
+
+    tlb_entry = n ? tlb->tlb_entry1 : tlb->tlb_entry0;
+    tlb_v = FIELD_EX64(tlb_entry, TLBENTRY, V);
+    tlb_d = FIELD_EX64(tlb_entry, TLBENTRY, D);
+    tlb_plv = FIELD_EX64(tlb_entry, TLBENTRY, PLV);
+    tlb_ppn = FIELD_EX64(tlb_entry, TLBENTRY, PPN);
+    tlb_nx = FIELD_EX64(tlb_entry, TLBENTRY, NX);
+    tlb_nr = FIELD_EX64(tlb_entry, TLBENTRY, NR);
+    tlb_rplv = FIELD_EX64(tlb_entry, TLBENTRY, RPLV);
+
+    /* Check access rights */
+    if (!tlb_v) {
+        return TLBRET_INVALID;
+    }
+
+    if (access_type == MMU_INST_FETCH && tlb_nx) {
+        return TLBRET_XI;
+    }
+
+    if (access_type == MMU_DATA_LOAD && tlb_nr) {
+        return TLBRET_RI;
+    }
+
+    if (((tlb_rplv == 0) && (plv > tlb_plv)) ||
+        ((tlb_rplv == 1) && (plv != tlb_plv))) {
+        return TLBRET_PE;
+    }
+
+    if ((access_type == MMU_DATA_STORE) && !tlb_d) {
+        return TLBRET_DIRTY;
+    }
+
+    /*
+     * tlb_entry contains ppn[47:12] while 16KiB ppn is [47:15]
+     * need adjust.
+     */
+    *physical = (tlb_ppn << R_TLBENTRY_PPN_SHIFT) |
+                (address & MAKE_64BIT_MASK(0, tlb_ps));
+    *prot = PAGE_READ;
+    if (tlb_d) {
+        *prot |= PAGE_WRITE;
+    }
+    if (!tlb_nx) {
+        *prot |= PAGE_EXEC;
+    }
+    return TLBRET_MATCH;
+}
+
+/*
+ * One tlb entry holds an adjacent odd/even pair, the vpn is the
+ * content of the virtual page number divided by 2. So the
+ * compare vpn is bit[47:15] for 16KiB page. while the vppn
+ * field in tlb entry contains bit[47:13], so need adjust.
+ * virt_vpn = vaddr[47:13]
+ */
+static bool loongarch_tlb_search(CPULoongArchState *env, target_ulong vaddr,
+                                 int *index)
+{
+    LoongArchTLB *tlb;
+    uint16_t csr_asid, tlb_asid, stlb_idx;
+    uint8_t tlb_e, tlb_ps, tlb_g, stlb_ps;
+    int i, compare_shift;
+    uint64_t vpn, tlb_vppn;
+
+    csr_asid = FIELD_EX64(env->CSR_ASID, CSR_ASID, ASID);
+    stlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+    vpn = (vaddr & TARGET_VIRT_MASK) >> (stlb_ps + 1);
+    stlb_idx = vpn & 0xff; /* VA[25:15] <==> TLBIDX.index for 16KiB Page */
+    compare_shift = stlb_ps + 1 - R_TLB_MISC_VPPN_SHIFT;
+
+    /* Search STLB */
+    for (i = 0; i < 8; ++i) {
+        tlb = &env->tlb[i * 256 + stlb_idx];
+        tlb_e = FIELD_EX64(tlb->tlb_misc, TLB_MISC, E);
+        if (tlb_e) {
+            tlb_vppn = FIELD_EX64(tlb->tlb_misc, TLB_MISC, VPPN);
+            tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+            tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+
+            if ((tlb_g == 1 || tlb_asid == csr_asid) &&
+                (vpn == (tlb_vppn >> compare_shift))) {
+                *index = i * 256 + stlb_idx;
+                return true;
+            }
+        }
+    }
+
+    /* Search MTLB */
+    for (i = LOONGARCH_STLB; i < LOONGARCH_TLB_MAX; ++i) {
+        tlb = &env->tlb[i];
+        tlb_e = FIELD_EX64(tlb->tlb_misc, TLB_MISC, E);
+        if (tlb_e) {
+            tlb_vppn = FIELD_EX64(tlb->tlb_misc, TLB_MISC, VPPN);
+            tlb_ps = FIELD_EX64(tlb->tlb_misc, TLB_MISC, PS);
+            tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+            tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+            compare_shift = tlb_ps + 1 - R_TLB_MISC_VPPN_SHIFT;
+            vpn = (vaddr & TARGET_VIRT_MASK) >> (tlb_ps + 1);
+            if ((tlb_g == 1 || tlb_asid == csr_asid) &&
+                (vpn == (tlb_vppn >> compare_shift))) {
+                *index = i;
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+static int loongarch_map_address(CPULoongArchState *env, hwaddr *physical,
+                                 int *prot, target_ulong address,
+                                 MMUAccessType access_type, int mmu_idx)
+{
+    int index, match;
+
+    match = loongarch_tlb_search(env, address, &index);
+    if (match) {
+        return loongarch_map_tlb_entry(env, physical, prot,
+                                       address, access_type, index, mmu_idx);
+    }
+
+    return TLBRET_NOMATCH;
+}
+
+static int get_physical_address(CPULoongArchState *env, hwaddr *physical,
+                                int *prot, target_ulong address,
+                                MMUAccessType access_type, int mmu_idx)
+{
+    int user_mode = mmu_idx == MMU_USER_IDX;
+    int kernel_mode = mmu_idx == MMU_KERNEL_IDX;
+    uint32_t plv, base_c, base_v;
+    int64_t addr_high;
+    uint8_t da = FIELD_EX64(env->CSR_CRMD, CSR_CRMD, DA);
+    uint8_t pg = FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PG);
+
+    /* Check PG and DA */
+    if (da & !pg) {
+        *physical = address & TARGET_PHYS_MASK;
+        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+        return TLBRET_MATCH;
+    }
+
+    plv = kernel_mode | (user_mode << R_CSR_DMW_PLV3_SHIFT);
+    base_v = address >> TARGET_VIRT_ADDR_SPACE_BITS;
+    /* Check direct map window */
+    for (int i = 0; i < 4; i++) {
+        base_c = env->CSR_DMW[i] >> TARGET_VIRT_ADDR_SPACE_BITS;
+        if ((plv & env->CSR_DMW[i]) && (base_c == base_v)) {
+            *physical = dmw_va2pa(address);
+            *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+            return TLBRET_MATCH;
+        }
+    }
+
+    /* Check valid extension */
+    addr_high = sextract64(address, TARGET_VIRT_ADDR_SPACE_BITS, 16);
+    if (!(addr_high == 0 || addr_high == -1)) {
+        return TLBRET_BADADDR;
+    }
+
+    /* Mapped address */
+    return loongarch_map_address(env, physical, prot, address,
+                                 access_type, mmu_idx);
+}
+
+hwaddr loongarch_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+    hwaddr phys_addr;
+    int prot;
+
+    if (get_physical_address(env, &phys_addr, &prot, addr, MMU_DATA_LOAD,
+                             cpu_mmu_index(env, false)) != 0) {
+        return -1;
+    }
+    return phys_addr;
+}
+
+static void raise_mmu_exception(CPULoongArchState *env, target_ulong address,
+                                MMUAccessType access_type, int tlb_error)
+{
+    CPUState *cs = env_cpu(env);
+
+    switch (tlb_error) {
+    default:
+    case TLBRET_BADADDR:
+        cs->exception_index = EXCCODE_ADEM;
+        break;
+    case TLBRET_NOMATCH:
+        /* No TLB match for a mapped address */
+        if (access_type == MMU_DATA_LOAD) {
+            cs->exception_index = EXCCODE_PIL;
+        } else if (access_type == MMU_DATA_STORE) {
+            cs->exception_index = EXCCODE_PIS;
+        } else if (access_type == MMU_INST_FETCH) {
+            cs->exception_index = EXCCODE_PIF;
+        }
+        env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 1);
+        break;
+    case TLBRET_INVALID:
+        /* TLB match with no valid bit */
+        if (access_type == MMU_DATA_LOAD) {
+            cs->exception_index = EXCCODE_PIL;
+        } else if (access_type == MMU_DATA_STORE) {
+            cs->exception_index = EXCCODE_PIS;
+        } else if (access_type == MMU_INST_FETCH) {
+            cs->exception_index = EXCCODE_PIF;
+        }
+        break;
+    case TLBRET_DIRTY:
+        /* TLB match but 'D' bit is cleared */
+        cs->exception_index = EXCCODE_PME;
+        break;
+    case TLBRET_XI:
+        /* Execute-Inhibit Exception */
+        cs->exception_index = EXCCODE_PNX;
+        break;
+    case TLBRET_RI:
+        /* Read-Inhibit Exception */
+        cs->exception_index = EXCCODE_PNR;
+        break;
+    case TLBRET_PE:
+        /* Privileged Exception */
+        cs->exception_index = EXCCODE_PPI;
+        break;
+    }
+
+    if (tlb_error == TLBRET_NOMATCH) {
+        env->CSR_TLBRBADV = address;
+        env->CSR_TLBREHI = FIELD_DP64(env->CSR_TLBREHI, CSR_TLBREHI, VPPN,
+                                      extract64(address, 13, 35));
+    } else {
+        if (!FIELD_EX64(env->CSR_DBG, CSR_DBG, DST)) {
+            env->CSR_BADV = address;
+        }
+        env->CSR_TLBEHI = address & (TARGET_PAGE_MASK << 1);
+   }
+}
+
+static void invalidate_tlb_entry(CPULoongArchState *env, int index)
+{
+    target_ulong addr, mask, pagesize;
+    uint8_t tlb_ps;
+    LoongArchTLB *tlb = &env->tlb[index];
+
+    int mmu_idx = cpu_mmu_index(env, false);
+    uint8_t tlb_v0 = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, V);
+    uint8_t tlb_v1 = FIELD_EX64(tlb->tlb_entry1, TLBENTRY, V);
+    uint64_t tlb_vppn = FIELD_EX64(tlb->tlb_misc, TLB_MISC, VPPN);
+
+    if (index >= LOONGARCH_STLB) {
+        tlb_ps = FIELD_EX64(tlb->tlb_misc, TLB_MISC, PS);
+    } else {
+        tlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+    }
+    pagesize = 1 << tlb_ps;
+    mask = MAKE_64BIT_MASK(0, tlb_ps + 1);
+
+    if (tlb_v0) {
+        addr = (tlb_vppn << R_TLB_MISC_VPPN_SHIFT) & ~mask;    /* even */
+        tlb_flush_range_by_mmuidx(env_cpu(env), addr, pagesize,
+                                  mmu_idx, TARGET_LONG_BITS);
+    }
+
+    if (tlb_v1) {
+        addr = (tlb_vppn << R_TLB_MISC_VPPN_SHIFT) & pagesize;    /* odd */
+        tlb_flush_range_by_mmuidx(env_cpu(env), addr, pagesize,
+                                  mmu_idx, TARGET_LONG_BITS);
+    }
+}
+
+static void invalidate_tlb(CPULoongArchState *env, int index)
+{
+    LoongArchTLB *tlb;
+    uint16_t csr_asid, tlb_asid, tlb_g;
+
+    csr_asid = FIELD_EX64(env->CSR_ASID, CSR_ASID, ASID);
+    tlb = &env->tlb[index];
+    tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+    tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+    if (tlb_g == 0 && tlb_asid != csr_asid) {
+        return;
+    }
+    invalidate_tlb_entry(env, index);
+}
+
+static void fill_tlb_entry(CPULoongArchState *env, int index)
+{
+    LoongArchTLB *tlb = &env->tlb[index];
+    uint64_t lo0, lo1, csr_vppn;
+    uint16_t csr_asid;
+    uint8_t csr_ps;
+
+    if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) {
+        csr_ps = FIELD_EX64(env->CSR_TLBREHI, CSR_TLBREHI, PS);
+        csr_vppn = FIELD_EX64(env->CSR_TLBREHI, CSR_TLBREHI, VPPN);
+        lo0 = env->CSR_TLBRELO0;
+        lo1 = env->CSR_TLBRELO1;
+    } else {
+        csr_ps = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, PS);
+        csr_vppn = FIELD_EX64(env->CSR_TLBEHI, CSR_TLBEHI, VPPN);
+        lo0 = env->CSR_TLBELO0;
+        lo1 = env->CSR_TLBELO1;
+    }
+
+    if (csr_ps == 0) {
+        qemu_log_mask(CPU_LOG_MMU, "page size is 0\n");
+    }
+
+    /* Only MTLB has the ps fields */
+    if (index >= LOONGARCH_STLB) {
+        tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, PS, csr_ps);
+    }
+
+    tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, VPPN, csr_vppn);
+    tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 1);
+    csr_asid = FIELD_EX64(env->CSR_ASID, CSR_ASID, ASID);
+    tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, ASID, csr_asid);
+
+    tlb->tlb_entry0 = lo0;
+    tlb->tlb_entry1 = lo1;
+}
+
+/* Return an random value between low and high */
+static uint32_t get_random_tlb(uint32_t low, uint32_t high)
+{
+    uint32_t val;
+
+    qemu_guest_getrandom_nofail(&val, sizeof(val));
+    return val % (high - low + 1) + low;
+}
+
+void helper_tlbsrch(CPULoongArchState *env)
+{
+    int index, match;
+
+    if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) {
+        match = loongarch_tlb_search(env, env->CSR_TLBREHI, &index);
+    } else {
+        match = loongarch_tlb_search(env, env->CSR_TLBEHI, &index);
+    }
+
+    if (match) {
+        env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX, INDEX, index);
+        env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX, NE, 0);
+        return;
+    }
+
+    env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX, NE, 1);
+}
+
+void helper_tlbrd(CPULoongArchState *env)
+{
+    LoongArchTLB *tlb;
+    int index;
+    uint8_t tlb_ps, tlb_e;
+
+    index = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, INDEX);
+    tlb = &env->tlb[index];
+
+    if (index >= LOONGARCH_STLB) {
+        tlb_ps = FIELD_EX64(tlb->tlb_misc, TLB_MISC, PS);
+    } else {
+        tlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+    }
+    tlb_e = FIELD_EX64(tlb->tlb_misc, TLB_MISC, E);
+
+    if (!tlb_e) {
+        /* Invalid TLB entry */
+        env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX, NE, 1);
+        env->CSR_ASID  = FIELD_DP64(env->CSR_ASID, CSR_ASID, ASID, 0);
+        env->CSR_TLBEHI = 0;
+        env->CSR_TLBELO0 = 0;
+        env->CSR_TLBELO1 = 0;
+        env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX, PS, 0);
+    } else {
+        /* Valid TLB entry */
+        env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX, NE, 0);
+        env->CSR_TLBIDX = FIELD_DP64(env->CSR_TLBIDX, CSR_TLBIDX,
+                                     PS, (tlb_ps & 0x3f));
+        env->CSR_TLBEHI = FIELD_EX64(tlb->tlb_misc, TLB_MISC, VPPN) <<
+                                     R_TLB_MISC_VPPN_SHIFT;
+        env->CSR_TLBELO0 = tlb->tlb_entry0;
+        env->CSR_TLBELO1 = tlb->tlb_entry1;
+    }
+}
+
+void helper_tlbwr(CPULoongArchState *env)
+{
+    int index = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, INDEX);
+
+    invalidate_tlb(env, index);
+
+    if (FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, NE)) {
+        env->tlb[index].tlb_misc = FIELD_DP64(env->tlb[index].tlb_misc,
+                                              TLB_MISC, E, 0);
+        return;
+    }
+
+    fill_tlb_entry(env, index);
+}
+
+void helper_tlbfill(CPULoongArchState *env)
+{
+    uint64_t address, entryhi;
+    int index, set, stlb_idx;
+    uint16_t pagesize, stlb_ps;
+
+    if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) {
+        entryhi = env->CSR_TLBREHI;
+        pagesize = FIELD_EX64(env->CSR_TLBREHI, CSR_TLBREHI, PS);
+    } else {
+        entryhi = env->CSR_TLBEHI;
+        pagesize = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, PS);
+    }
+
+    stlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+
+    if (pagesize == stlb_ps) {
+        /* Only write into STLB bits [47:13] */
+        address = entryhi & ~MAKE_64BIT_MASK(0, R_CSR_TLBEHI_VPPN_SHIFT);
+
+        /* Choose one set ramdomly */
+        set = get_random_tlb(0, 7);
+
+        /* Index in one set */
+        stlb_idx = (address >> (stlb_ps + 1)) & 0xff; /* [0,255] */
+
+        index = set * 256 + stlb_idx;
+    } else {
+        /* Only write into MTLB */
+        index = get_random_tlb(LOONGARCH_STLB, LOONGARCH_TLB_MAX - 1);
+    }
+
+    invalidate_tlb(env, index);
+    fill_tlb_entry(env, index);
+}
+
+void helper_tlbclr(CPULoongArchState *env)
+{
+    LoongArchTLB *tlb;
+    int i, index;
+    uint16_t csr_asid, tlb_asid, tlb_g;
+
+    csr_asid = FIELD_EX64(env->CSR_ASID, CSR_ASID, ASID);
+    index = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, INDEX);
+
+    if (index < LOONGARCH_STLB) {
+        /* STLB. One line per operation */
+        for (i = 0; i < 8; i++) {
+            tlb = &env->tlb[i * 256 + (index % 256)];
+            tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+            tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+            if (!tlb_g && tlb_asid == csr_asid) {
+                tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
+            }
+        }
+    } else if (index < LOONGARCH_TLB_MAX) {
+        /* All MTLB entries */
+        for (i = LOONGARCH_STLB; i < LOONGARCH_TLB_MAX; i++) {
+            tlb = &env->tlb[i];
+            tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+            tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+            if (!tlb_g && tlb_asid == csr_asid) {
+                tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
+            }
+        }
+    }
+
+    tlb_flush(env_cpu(env));
+}
+
+void helper_tlbflush(CPULoongArchState *env)
+{
+    int i, index;
+
+    index = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, INDEX);
+
+    if (index < LOONGARCH_STLB) {
+        /* STLB. One line per operation */
+        for (i = 0; i < 8; i++) {
+            int s_idx = i * 256 + (index % 256);
+            env->tlb[s_idx].tlb_misc = FIELD_DP64(env->tlb[s_idx].tlb_misc,
+                                                  TLB_MISC, E, 0);
+        }
+    } else if (index < LOONGARCH_TLB_MAX) {
+        /* All MTLB entries */
+        for (i = LOONGARCH_STLB; i < LOONGARCH_TLB_MAX; i++) {
+            env->tlb[i].tlb_misc = FIELD_DP64(env->tlb[i].tlb_misc,
+                                              TLB_MISC, E, 0);
+        }
+    }
+
+    tlb_flush(env_cpu(env));
+}
+
+void helper_invtlb_all(CPULoongArchState *env)
+{
+    for (int i = 0; i < LOONGARCH_TLB_MAX; i++) {
+        env->tlb[i].tlb_misc = FIELD_DP64(env->tlb[i].tlb_misc,
+                                          TLB_MISC, E, 0);
+    }
+    tlb_flush(env_cpu(env));
+}
+
+void helper_invtlb_all_g(CPULoongArchState *env, uint32_t g)
+{
+    for (int i = 0; i < LOONGARCH_TLB_MAX; i++) {
+        LoongArchTLB *tlb = &env->tlb[i];
+        uint8_t tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+
+        if (tlb_g == g) {
+            tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
+        }
+    }
+    tlb_flush(env_cpu(env));
+}
+
+void helper_invtlb_all_asid(CPULoongArchState *env, target_ulong info)
+{
+    uint16_t asid = info & R_CSR_ASID_ASID_MASK;
+
+    for (int i = 0; i < LOONGARCH_TLB_MAX; i++) {
+        LoongArchTLB *tlb = &env->tlb[i];
+        uint8_t tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+        uint16_t tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+
+        if (!tlb_g && (tlb_asid == asid)) {
+            tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
+        }
+    }
+    tlb_flush(env_cpu(env));
+}
+
+void helper_invtlb_page_asid(CPULoongArchState *env, target_ulong info,
+                             target_ulong addr)
+{
+    uint16_t asid = info & 0x3ff;
+
+    for (int i = 0; i < LOONGARCH_TLB_MAX; i++) {
+        LoongArchTLB *tlb = &env->tlb[i];
+        uint8_t tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+        uint16_t tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+        uint64_t vpn, tlb_vppn;
+        uint8_t tlb_ps, compare_shift;
+
+        if (i >= LOONGARCH_STLB) {
+            tlb_ps = FIELD_EX64(tlb->tlb_misc, TLB_MISC, PS);
+        } else {
+            tlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+        }
+        tlb_vppn = FIELD_EX64(tlb->tlb_misc, TLB_MISC, VPPN);
+        vpn = (addr & TARGET_VIRT_MASK) >> (tlb_ps + 1);
+        compare_shift = tlb_ps + 1 - R_TLB_MISC_VPPN_SHIFT;
+
+        if (!tlb_g && (tlb_asid == asid) &&
+           (vpn == (tlb_vppn >> compare_shift))) {
+            tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
+        }
+    }
+    tlb_flush(env_cpu(env));
+}
+
+void helper_invtlb_page_asid_or_g(CPULoongArchState *env,
+                                  target_ulong info, target_ulong addr)
+{
+    uint16_t asid = info & 0x3ff;
+
+    for (int i = 0; i < LOONGARCH_TLB_MAX; i++) {
+        LoongArchTLB *tlb = &env->tlb[i];
+        uint8_t tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
+        uint16_t tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
+        uint64_t vpn, tlb_vppn;
+        uint8_t tlb_ps, compare_shift;
+
+        if (i >= LOONGARCH_STLB) {
+            tlb_ps = FIELD_EX64(tlb->tlb_misc, TLB_MISC, PS);
+        } else {
+            tlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
+        }
+        tlb_vppn = FIELD_EX64(tlb->tlb_misc, TLB_MISC, VPPN);
+        vpn = (addr & TARGET_VIRT_MASK) >> (tlb_ps + 1);
+        compare_shift = tlb_ps + 1 - R_TLB_MISC_VPPN_SHIFT;
+
+        if ((tlb_g || (tlb_asid == asid)) &&
+            (vpn == (tlb_vppn >> compare_shift))) {
+            tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
+        }
+    }
+    tlb_flush(env_cpu(env));
+}
+
+bool loongarch_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+                            MMUAccessType access_type, int mmu_idx,
+                            bool probe, uintptr_t retaddr)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    CPULoongArchState *env = &cpu->env;
+    hwaddr physical;
+    int prot;
+    int ret = TLBRET_BADADDR;
+
+    /* Data access */
+    ret = get_physical_address(env, &physical, &prot, address,
+                               access_type, mmu_idx);
+
+    if (ret == TLBRET_MATCH) {
+        tlb_set_page(cs, address & TARGET_PAGE_MASK,
+                     physical & TARGET_PAGE_MASK, prot,
+                     mmu_idx, TARGET_PAGE_SIZE);
+        qemu_log_mask(CPU_LOG_MMU,
+                      "%s address=%" VADDR_PRIx " physical " TARGET_FMT_plx
+                      " prot %d\n", __func__, address, physical, prot);
+        return true;
+    } else {
+        qemu_log_mask(CPU_LOG_MMU,
+                      "%s address=%" VADDR_PRIx " ret %d\n", __func__, address,
+                      ret);
+    }
+    if (probe) {
+        return false;
+    }
+    raise_mmu_exception(env, address, access_type, ret);
+    cpu_loop_exit_restore(cs, retaddr);
+}
+
+target_ulong helper_lddir(CPULoongArchState *env, target_ulong base,
+                          target_ulong level, uint32_t mem_idx)
+{
+    CPUState *cs = env_cpu(env);
+    target_ulong badvaddr, index, phys, ret;
+    int shift;
+    uint64_t dir_base, dir_width;
+    bool huge = (base >> LOONGARCH_PAGE_HUGE_SHIFT) & 0x1;
+
+    badvaddr = env->CSR_TLBRBADV;
+    base = base & TARGET_PHYS_MASK;
+
+    /* 0:64bit, 1:128bit, 2:192bit, 3:256bit */
+    shift = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTEWIDTH);
+    shift = (shift + 1) * 3;
+
+    if (huge) {
+        return base;
+    }
+    switch (level) {
+    case 1:
+        dir_base = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, DIR1_BASE);
+        dir_width = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, DIR1_WIDTH);
+        break;
+    case 2:
+        dir_base = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, DIR2_BASE);
+        dir_width = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, DIR2_WIDTH);
+        break;
+    case 3:
+        dir_base = FIELD_EX64(env->CSR_PWCH, CSR_PWCH, DIR3_BASE);
+        dir_width = FIELD_EX64(env->CSR_PWCH, CSR_PWCH, DIR3_WIDTH);
+        break;
+    case 4:
+        dir_base = FIELD_EX64(env->CSR_PWCH, CSR_PWCH, DIR4_BASE);
+        dir_width = FIELD_EX64(env->CSR_PWCH, CSR_PWCH, DIR4_WIDTH);
+        break;
+    default:
+        do_raise_exception(env, EXCCODE_INE, GETPC());
+        return 0;
+    }
+    index = (badvaddr >> dir_base) & ((1 << dir_width) - 1);
+    phys = base | index << shift;
+    ret = ldq_phys(cs->as, phys) & TARGET_PHYS_MASK;
+    return ret;
+}
+
+void helper_ldpte(CPULoongArchState *env, target_ulong base, target_ulong odd,
+                  uint32_t mem_idx)
+{
+    CPUState *cs = env_cpu(env);
+    target_ulong phys, tmp0, ptindex, ptoffset0, ptoffset1, ps, badv;
+    int shift;
+    bool huge = (base >> LOONGARCH_PAGE_HUGE_SHIFT) & 0x1;
+    uint64_t ptbase = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTBASE);
+    uint64_t ptwidth = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTWIDTH);
+
+    base = base & TARGET_PHYS_MASK;
+
+    if (huge) {
+        /* Huge Page. base is paddr */
+        tmp0 = base ^ (1 << LOONGARCH_PAGE_HUGE_SHIFT);
+        /* Move Global bit */
+        tmp0 = ((tmp0 & (1 << LOONGARCH_HGLOBAL_SHIFT))  >>
+                LOONGARCH_HGLOBAL_SHIFT) << R_TLBENTRY_G_SHIFT |
+                (tmp0 & (~(1 << R_TLBENTRY_G_SHIFT)));
+        ps = ptbase + ptwidth - 1;
+        if (odd) {
+            tmp0 += (1 << ps);
+        }
+    } else {
+        /* 0:64bit, 1:128bit, 2:192bit, 3:256bit */
+        shift = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTEWIDTH);
+        shift = (shift + 1) * 3;
+        badv = env->CSR_TLBRBADV;
+
+        ptindex = (badv >> ptbase) & ((1 << ptwidth) - 1);
+        ptindex = ptindex & ~0x1;   /* clear bit 0 */
+        ptoffset0 = ptindex << shift;
+        ptoffset1 = (ptindex + 1) << shift;
+
+        phys = base | (odd ? ptoffset1 : ptoffset0);
+        tmp0 = ldq_phys(cs->as, phys) & TARGET_PHYS_MASK;
+        ps = ptbase;
+    }
+
+    if (odd) {
+        env->CSR_TLBRELO1 = tmp0;
+    } else {
+        env->CSR_TLBRELO0 = tmp0;
+    }
+    env->CSR_TLBREHI = FIELD_DP64(env->CSR_TLBREHI, CSR_TLBREHI, PS, ps);
+}
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
new file mode 100644
index 0000000..c9afd11
--- /dev/null
+++ b/target/loongarch/translate.c
@@ -0,0 +1,281 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch emulation for QEMU - main translation routines.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "tcg/tcg-op.h"
+#include "exec/translator.h"
+#include "exec/helper-proto.h"
+#include "exec/helper-gen.h"
+
+#include "exec/translator.h"
+#include "exec/log.h"
+#include "qemu/qemu-print.h"
+#include "fpu/softfloat.h"
+#include "translate.h"
+#include "internals.h"
+
+/* Global register indices */
+TCGv cpu_gpr[32], cpu_pc;
+static TCGv cpu_lladdr, cpu_llval;
+TCGv_i32 cpu_fcsr0;
+TCGv_i64 cpu_fpr[32];
+
+#include "exec/gen-icount.h"
+
+#define DISAS_STOP        DISAS_TARGET_0
+#define DISAS_EXIT        DISAS_TARGET_1
+#define DISAS_EXIT_UPDATE DISAS_TARGET_2
+
+static inline int plus_1(DisasContext *ctx, int x)
+{
+    return x + 1;
+}
+
+static inline int shl_2(DisasContext *ctx, int x)
+{
+    return x << 2;
+}
+
+/*
+ * LoongArch the upper 32 bits are undefined ("can be any value").
+ * QEMU chooses to nanbox, because it is most likely to show guest bugs early.
+ */
+static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in)
+{
+    tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(32, 32));
+}
+
+void generate_exception(DisasContext *ctx, int excp)
+{
+    tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+    gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp));
+    ctx->base.is_jmp = DISAS_NORETURN;
+}
+
+static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
+{
+    if (translator_use_goto_tb(&ctx->base, dest)) {
+        tcg_gen_goto_tb(n);
+        tcg_gen_movi_tl(cpu_pc, dest);
+        tcg_gen_exit_tb(ctx->base.tb, n);
+    } else {
+        tcg_gen_movi_tl(cpu_pc, dest);
+        tcg_gen_lookup_and_goto_ptr();
+    }
+}
+
+static void loongarch_tr_init_disas_context(DisasContextBase *dcbase,
+                                            CPUState *cs)
+{
+    int64_t bound;
+    DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+    ctx->page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
+    ctx->mem_idx = ctx->base.tb->flags;
+
+    /* Bound the number of insns to execute to those left on the page.  */
+    bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4;
+    ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
+
+    ctx->ntemp = 0;
+    memset(ctx->temp, 0, sizeof(ctx->temp));
+
+    ctx->zero = tcg_constant_tl(0);
+}
+
+static void loongarch_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
+{
+}
+
+static void loongarch_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
+{
+    DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+    tcg_gen_insn_start(ctx->base.pc_next);
+}
+
+/*
+ * Wrappers for getting reg values.
+ *
+ * The $zero register does not have cpu_gpr[0] allocated -- we supply the
+ * constant zero as a source, and an uninitialized sink as destination.
+ *
+ * Further, we may provide an extension for word operations.
+ */
+static TCGv temp_new(DisasContext *ctx)
+{
+    assert(ctx->ntemp < ARRAY_SIZE(ctx->temp));
+    return ctx->temp[ctx->ntemp++] = tcg_temp_new();
+}
+
+static TCGv gpr_src(DisasContext *ctx, int reg_num, DisasExtend src_ext)
+{
+    TCGv t;
+
+    if (reg_num == 0) {
+        return ctx->zero;
+    }
+
+    switch (src_ext) {
+    case EXT_NONE:
+        return cpu_gpr[reg_num];
+    case EXT_SIGN:
+        t = temp_new(ctx);
+        tcg_gen_ext32s_tl(t, cpu_gpr[reg_num]);
+        return t;
+    case EXT_ZERO:
+        t = temp_new(ctx);
+        tcg_gen_ext32u_tl(t, cpu_gpr[reg_num]);
+        return t;
+    }
+    g_assert_not_reached();
+}
+
+static TCGv gpr_dst(DisasContext *ctx, int reg_num, DisasExtend dst_ext)
+{
+    if (reg_num == 0 || dst_ext) {
+        return temp_new(ctx);
+    }
+    return cpu_gpr[reg_num];
+}
+
+static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
+{
+    if (reg_num != 0) {
+        switch (dst_ext) {
+        case EXT_NONE:
+            tcg_gen_mov_tl(cpu_gpr[reg_num], t);
+            break;
+        case EXT_SIGN:
+            tcg_gen_ext32s_tl(cpu_gpr[reg_num], t);
+            break;
+        case EXT_ZERO:
+            tcg_gen_ext32u_tl(cpu_gpr[reg_num], t);
+            break;
+        default:
+            g_assert_not_reached();
+        }
+    }
+}
+
+#include "decode-insns.c.inc"
+#include "insn_trans/trans_arith.c.inc"
+#include "insn_trans/trans_shift.c.inc"
+#include "insn_trans/trans_bit.c.inc"
+#include "insn_trans/trans_memory.c.inc"
+#include "insn_trans/trans_atomic.c.inc"
+#include "insn_trans/trans_extra.c.inc"
+#include "insn_trans/trans_farith.c.inc"
+#include "insn_trans/trans_fcmp.c.inc"
+#include "insn_trans/trans_fcnv.c.inc"
+#include "insn_trans/trans_fmov.c.inc"
+#include "insn_trans/trans_fmemory.c.inc"
+#include "insn_trans/trans_branch.c.inc"
+#include "insn_trans/trans_privileged.c.inc"
+
+static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
+{
+    CPULoongArchState *env = cs->env_ptr;
+    DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+    ctx->opcode = cpu_ldl_code(env, ctx->base.pc_next);
+
+    if (!decode(ctx, ctx->opcode)) {
+        qemu_log_mask(LOG_UNIMP, "Error: unknown opcode. "
+                      TARGET_FMT_lx ": 0x%x\n",
+                      ctx->base.pc_next, ctx->opcode);
+        generate_exception(ctx, EXCCODE_INE);
+    }
+
+    for (int i = ctx->ntemp - 1; i >= 0; --i) {
+        tcg_temp_free(ctx->temp[i]);
+        ctx->temp[i] = NULL;
+    }
+    ctx->ntemp = 0;
+
+    ctx->base.pc_next += 4;
+}
+
+static void loongarch_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
+{
+    DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+    switch (ctx->base.is_jmp) {
+    case DISAS_STOP:
+        tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+        tcg_gen_lookup_and_goto_ptr();
+        break;
+    case DISAS_TOO_MANY:
+        gen_goto_tb(ctx, 0, ctx->base.pc_next);
+        break;
+    case DISAS_NORETURN:
+        break;
+    case DISAS_EXIT_UPDATE:
+        tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+        QEMU_FALLTHROUGH;
+    case DISAS_EXIT:
+        tcg_gen_exit_tb(NULL, 0);
+        break;
+    default:
+        g_assert_not_reached();
+    }
+}
+
+static void loongarch_tr_disas_log(const DisasContextBase *dcbase,
+                                   CPUState *cpu, FILE *logfile)
+{
+    qemu_log("IN: %s\n", lookup_symbol(dcbase->pc_first));
+    target_disas(logfile, cpu, dcbase->pc_first, dcbase->tb->size);
+}
+
+static const TranslatorOps loongarch_tr_ops = {
+    .init_disas_context = loongarch_tr_init_disas_context,
+    .tb_start           = loongarch_tr_tb_start,
+    .insn_start         = loongarch_tr_insn_start,
+    .translate_insn     = loongarch_tr_translate_insn,
+    .tb_stop            = loongarch_tr_tb_stop,
+    .disas_log          = loongarch_tr_disas_log,
+};
+
+void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
+{
+    DisasContext ctx;
+
+    translator_loop(&loongarch_tr_ops, &ctx.base, cs, tb, max_insns);
+}
+
+void loongarch_translate_init(void)
+{
+    int i;
+
+    cpu_gpr[0] = NULL;
+    for (i = 1; i < 32; i++) {
+        cpu_gpr[i] = tcg_global_mem_new(cpu_env,
+                                        offsetof(CPULoongArchState, gpr[i]),
+                                        regnames[i]);
+    }
+
+    for (i = 0; i < 32; i++) {
+        int off = offsetof(CPULoongArchState, fpr[i]);
+        cpu_fpr[i] = tcg_global_mem_new_i64(cpu_env, off, fregnames[i]);
+    }
+
+    cpu_pc = tcg_global_mem_new(cpu_env, offsetof(CPULoongArchState, pc), "pc");
+    cpu_fcsr0 = tcg_global_mem_new_i32(cpu_env,
+                    offsetof(CPULoongArchState, fcsr0), "fcsr0");
+    cpu_lladdr = tcg_global_mem_new(cpu_env,
+                    offsetof(CPULoongArchState, lladdr), "lladdr");
+    cpu_llval = tcg_global_mem_new(cpu_env,
+                    offsetof(CPULoongArchState, llval), "llval");
+}
+
+void restore_state_to_opc(CPULoongArchState *env, TranslationBlock *tb,
+                          target_ulong *data)
+{
+    env->pc = data[0];
+}
diff --git a/target/loongarch/translate.h b/target/loongarch/translate.h
new file mode 100644
index 0000000..9cc1251
--- /dev/null
+++ b/target/loongarch/translate.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch translation routines.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef TARGET_LOONGARCH_TRANSLATE_H
+#define TARGET_LOONGARCH_TRANSLATE_H
+
+#include "exec/translator.h"
+
+#define TRANS(NAME, FUNC, ...) \
+    static bool trans_##NAME(DisasContext *ctx, arg_##NAME * a) \
+    { return FUNC(ctx, a, __VA_ARGS__); }
+
+/*
+ * If an operation is being performed on less than TARGET_LONG_BITS,
+ * it may require the inputs to be sign- or zero-extended; which will
+ * depend on the exact operation being performed.
+ */
+typedef enum {
+    EXT_NONE,
+    EXT_SIGN,
+    EXT_ZERO,
+} DisasExtend;
+
+typedef struct DisasContext {
+    DisasContextBase base;
+    target_ulong page_start;
+    uint32_t opcode;
+    int mem_idx;
+    TCGv zero;
+    /* Space for 3 operands plus 1 extra for address computation. */
+    TCGv temp[4];
+    uint8_t ntemp;
+} DisasContext;
+
+void generate_exception(DisasContext *ctx, int excp);
+
+extern TCGv cpu_gpr[32], cpu_pc;
+extern TCGv_i32 cpu_fscr0;
+extern TCGv_i64 cpu_fpr[32];
+
+#endif
diff --git a/target/meson.build b/target/meson.build
index 2f69402..a53a604 100644
--- a/target/meson.build
+++ b/target/meson.build
@@ -5,6 +5,7 @@ subdir('cris')
 subdir('hexagon')
 subdir('hppa')
 subdir('i386')
+subdir('loongarch')
 subdir('m68k')
 subdir('microblaze')
 subdir('mips')
diff --git a/tests/tcg/loongarch64/Makefile.softmmu-target b/tests/tcg/loongarch64/Makefile.softmmu-target
new file mode 100644
index 0000000..908f3a8
--- /dev/null
+++ b/tests/tcg/loongarch64/Makefile.softmmu-target
@@ -0,0 +1,33 @@
+#
+# Loongarch64 system tests
+#
+
+LOONGARCH64_SYSTEM_SRC=$(SRC_PATH)/tests/tcg/loongarch64/system
+VPATH+=$(LOONGARCH64_SYSTEM_SRC)
+
+# These objects provide the basic boot code and helper functions for all tests
+CRT_OBJS=boot.o
+
+LOONGARCH64_TEST_SRCS=$(wildcard $(LOONGARCH64_SYSTEM_SRC)/*.c)
+LOONGARCH64_TESTS = $(patsubst $(LOONGARCH64_SYSTEM_SRC)/%.c, %, $(LOONGARCH64_TEST_SRCS))
+
+CRT_PATH=$(LOONGARCH64_SYSTEM_SRC)
+LINK_SCRIPT=$(LOONGARCH64_SYSTEM_SRC)/kernel.ld
+LDFLAGS=-Wl,-T$(LINK_SCRIPT)
+TESTS+=$(LOONGARCH64_TESTS) $(MULTIARCH_TESTS)
+CFLAGS+=-nostdlib -g -O1 -march=loongarch64 -mabi=lp64d $(MINILIB_INC)
+LDFLAGS+=-static -nostdlib $(CRT_OBJS) $(MINILIB_OBJS) -lgcc
+
+# building head blobs
+.PRECIOUS: $(CRT_OBJS)
+
+%.o: $(CRT_PATH)/%.S
+	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -x assembler-with-cpp -c $< -o $@
+
+# Build and link the tests
+%: %.c $(LINK_SCRIPT) $(CRT_OBJS) $(MINILIB_OBJS)
+	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $< -o $@ $(LDFLAGS)
+
+memory: CFLAGS+=-DCHECK_UNALIGNED=0
+# Running
+QEMU_OPTS+=-serial chardev:output -kernel
diff --git a/tests/tcg/loongarch64/system/boot.S b/tests/tcg/loongarch64/system/boot.S
new file mode 100644
index 0000000..67eb1c0
--- /dev/null
+++ b/tests/tcg/loongarch64/system/boot.S
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Minimal LoongArch system boot code.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "regdef.h"
+
+	.global _start
+	.align 16
+_start:
+	la.local t0, stack_end
+	move sp, t0
+	bl main
+
+	.type _start 2
+	.size _start, .-_start
+
+	.global _exit
+	.align 16
+_exit:
+2:      /* QEMU ACPI poweroff */
+	li.w  t0, 0xff
+	li.w  t1, 0x10080010
+	st.w  t0, t1, 0
+	idle  0
+	bl    2b
+
+	.type _exit 2
+	.size _exit, .-_exit
+
+	.global __sys_outc
+__sys_outc:
+	li.d t1, 1000000
+loop:
+	lu12i.w	t2, 0x1fe00
+	ori	t0, t2, 0x1e5
+	ld.bu	t0, t0, 0
+	andi	t0, t0, 0x20
+	ext.w.b	t0, t0
+	bnez	t0, in
+	addi.w	t1, t1, -1
+	bnez	t1, loop
+in:
+	ext.w.b	a0, a0
+	lu12i.w	t0, 0x1fe00
+	ori	t0, t0, 0x1e0
+	st.b	a0, t0, 0
+	jirl	$r0, ra, 0
+
+	.data
+	.align 4
+stack:
+	.space	65536
+stack_end:
diff --git a/tests/tcg/loongarch64/system/kernel.ld b/tests/tcg/loongarch64/system/kernel.ld
new file mode 100644
index 0000000..f1a7c01
--- /dev/null
+++ b/tests/tcg/loongarch64/system/kernel.ld
@@ -0,0 +1,30 @@
+ENTRY(_start)
+
+SECTIONS
+{
+    /* Linux kernel legacy start address.  */
+    . = 0x9000000000200000;
+    _text = .;
+    .text : {
+        *(.text)
+    }
+    .rodata : {
+        *(.rodata)
+    }
+    _etext = .;
+
+    . = ALIGN(8192);
+    _data = .;
+    .got : {
+        *(.got)
+    }
+    .data : {
+	*(.sdata)
+        *(.data)
+    }
+    _edata = .;
+    .bss : {
+        *(.bss)
+    }
+    _end = .;
+}
diff --git a/tests/tcg/loongarch64/system/regdef.h b/tests/tcg/loongarch64/system/regdef.h
new file mode 100644
index 0000000..faa09b2
--- /dev/null
+++ b/tests/tcg/loongarch64/system/regdef.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+#ifndef _ASM_REGDEF_H
+#define _ASM_REGDEF_H
+
+#define zero    $r0     /* wired zero */
+#define ra      $r1     /* return address */
+#define tp      $r2
+#define sp      $r3     /* stack pointer */
+#define v0      $r4     /* return value - caller saved */
+#define v1      $r5
+#define a0      $r4     /* argument registers */
+#define a1      $r5
+#define a2      $r6
+#define a3      $r7
+#define a4      $r8
+#define a5      $r9
+#define a6      $r10
+#define a7      $r11
+#define t0      $r12    /* caller saved */
+#define t1      $r13
+#define t2      $r14
+#define t3      $r15
+#define t4      $r16
+#define t5      $r17
+#define t6      $r18
+#define t7      $r19
+#define t8      $r20
+                        /* $r21: Temporarily reserved */
+#define fp      $r22    /* frame pointer */
+#define s0      $r23    /* callee saved */
+#define s1      $r24
+#define s2      $r25
+#define s3      $r26
+#define s4      $r27
+#define s5      $r28
+#define s6      $r29
+#define s7      $r30
+#define s8      $r31
+
+#define gr0     $r0
+#define gr1     $r1
+#define gr2     $r2
+#define gr3     $r3
+#define gr4     $r4
+#define gr5     $r5
+#define gr6     $r6
+#define gr7     $r7
+#define gr8     $r8
+#define gr9     $r9
+#define gr10    $r10
+#define gr11    $r11
+#define gr12    $r12
+#define gr13    $r13
+#define gr14    $r14
+#define gr15    $r15
+#define gr16    $r16
+#define gr17    $r17
+#define gr18    $r18
+#define gr19    $r19
+#define gr20    $r20
+#define gr21    $r21
+#define gr22    $r22
+#define gr23    $r23
+#define gr24    $r24
+#define gr25    $r25
+#define gr26    $r26
+#define gr27    $r27
+#define gr28    $r28
+#define gr29    $r29
+#define gr30    $r30
+#define gr31    $r31
+
+#define STT_NOTYPE  0
+#define STT_OBJECT  1
+#define STT_FUNC    2
+#define STT_SECTION 3
+#define STT_FILE    4
+#define STT_COMMON  5
+#define STT_TLS     6
+
+#define ASM_NL           ;
+
+#endif /* _ASM_REGDEF_H */