aboutsummaryrefslogtreecommitdiff
path: root/target/microblaze
diff options
context:
space:
mode:
Diffstat (limited to 'target/microblaze')
-rw-r--r--target/microblaze/Makefile.objs3
-rw-r--r--target/microblaze/cpu-qom.h52
-rw-r--r--target/microblaze/cpu.c292
-rw-r--r--target/microblaze/cpu.h381
-rw-r--r--target/microblaze/gdbstub.c57
-rw-r--r--target/microblaze/helper.c307
-rw-r--r--target/microblaze/helper.h37
-rw-r--r--target/microblaze/microblaze-decode.h55
-rw-r--r--target/microblaze/mmu.c303
-rw-r--r--target/microblaze/mmu.h90
-rw-r--r--target/microblaze/op_helper.c523
-rw-r--r--target/microblaze/translate.c1872
12 files changed, 3972 insertions, 0 deletions
diff --git a/target/microblaze/Makefile.objs b/target/microblaze/Makefile.objs
new file mode 100644
index 0000000..f3d7b44
--- /dev/null
+++ b/target/microblaze/Makefile.objs
@@ -0,0 +1,3 @@
+obj-y += translate.o op_helper.o helper.o cpu.o
+obj-y += gdbstub.o
+obj-$(CONFIG_SOFTMMU) += mmu.o
diff --git a/target/microblaze/cpu-qom.h b/target/microblaze/cpu-qom.h
new file mode 100644
index 0000000..1a61db7
--- /dev/null
+++ b/target/microblaze/cpu-qom.h
@@ -0,0 +1,52 @@
+/*
+ * QEMU MicroBlaze CPU
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>
+ */
+#ifndef QEMU_MICROBLAZE_CPU_QOM_H
+#define QEMU_MICROBLAZE_CPU_QOM_H
+
+#include "qom/cpu.h"
+
+#define TYPE_MICROBLAZE_CPU "microblaze-cpu"
+
+#define MICROBLAZE_CPU_CLASS(klass) \
+ OBJECT_CLASS_CHECK(MicroBlazeCPUClass, (klass), TYPE_MICROBLAZE_CPU)
+#define MICROBLAZE_CPU(obj) \
+ OBJECT_CHECK(MicroBlazeCPU, (obj), TYPE_MICROBLAZE_CPU)
+#define MICROBLAZE_CPU_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(MicroBlazeCPUClass, (obj), TYPE_MICROBLAZE_CPU)
+
+/**
+ * MicroBlazeCPUClass:
+ * @parent_realize: The parent class' realize handler.
+ * @parent_reset: The parent class' reset handler.
+ *
+ * A MicroBlaze CPU model.
+ */
+typedef struct MicroBlazeCPUClass {
+ /*< private >*/
+ CPUClass parent_class;
+ /*< public >*/
+
+ DeviceRealize parent_realize;
+ void (*parent_reset)(CPUState *cpu);
+} MicroBlazeCPUClass;
+
+typedef struct MicroBlazeCPU MicroBlazeCPU;
+
+#endif
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
new file mode 100644
index 0000000..389c7b6
--- /dev/null
+++ b/target/microblaze/cpu.c
@@ -0,0 +1,292 @@
+/*
+ * QEMU MicroBlaze CPU
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias
+ * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ * Copyright (c) 2009 Edgar E. Iglesias, Axis Communications AB.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "cpu.h"
+#include "qemu-common.h"
+#include "hw/qdev-properties.h"
+#include "migration/vmstate.h"
+#include "exec/exec-all.h"
+
+static const struct {
+ const char *name;
+ uint8_t version_id;
+} mb_cpu_lookup[] = {
+ /* These key value are as per MBV field in PVR0 */
+ {"5.00.a", 0x01},
+ {"5.00.b", 0x02},
+ {"5.00.c", 0x03},
+ {"6.00.a", 0x04},
+ {"6.00.b", 0x06},
+ {"7.00.a", 0x05},
+ {"7.00.b", 0x07},
+ {"7.10.a", 0x08},
+ {"7.10.b", 0x09},
+ {"7.10.c", 0x0a},
+ {"7.10.d", 0x0b},
+ {"7.20.a", 0x0c},
+ {"7.20.b", 0x0d},
+ {"7.20.c", 0x0e},
+ {"7.20.d", 0x0f},
+ {"7.30.a", 0x10},
+ {"7.30.b", 0x11},
+ {"8.00.a", 0x12},
+ {"8.00.b", 0x13},
+ {"8.10.a", 0x14},
+ {"8.20.a", 0x15},
+ {"8.20.b", 0x16},
+ {"8.30.a", 0x17},
+ {"8.40.a", 0x18},
+ {"8.40.b", 0x19},
+ {"8.50.a", 0x1A},
+ {"9.0", 0x1B},
+ {"9.1", 0x1D},
+ {"9.2", 0x1F},
+ {"9.3", 0x20},
+ {NULL, 0},
+};
+
+static void mb_cpu_set_pc(CPUState *cs, vaddr value)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+
+ cpu->env.sregs[SR_PC] = value;
+}
+
+static bool mb_cpu_has_work(CPUState *cs)
+{
+ return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
+}
+
+#ifndef CONFIG_USER_ONLY
+static void microblaze_cpu_set_irq(void *opaque, int irq, int level)
+{
+ MicroBlazeCPU *cpu = opaque;
+ CPUState *cs = CPU(cpu);
+ int type = irq ? CPU_INTERRUPT_NMI : CPU_INTERRUPT_HARD;
+
+ if (level) {
+ cpu_interrupt(cs, type);
+ } else {
+ cpu_reset_interrupt(cs, type);
+ }
+}
+#endif
+
+/* CPUClass::reset() */
+static void mb_cpu_reset(CPUState *s)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(s);
+ MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(cpu);
+ CPUMBState *env = &cpu->env;
+
+ mcc->parent_reset(s);
+
+ memset(env, 0, offsetof(CPUMBState, pvr));
+ env->res_addr = RES_ADDR_NONE;
+ tlb_flush(s, 1);
+
+ /* Disable stack protector. */
+ env->shr = ~0;
+
+ env->sregs[SR_PC] = cpu->cfg.base_vectors;
+
+#if defined(CONFIG_USER_ONLY)
+ /* start in user mode with interrupts enabled. */
+ env->sregs[SR_MSR] = MSR_EE | MSR_IE | MSR_VM | MSR_UM;
+#else
+ env->sregs[SR_MSR] = 0;
+ mmu_init(&env->mmu);
+ env->mmu.c_mmu = 3;
+ env->mmu.c_mmu_tlb_access = 3;
+ env->mmu.c_mmu_zones = 16;
+#endif
+}
+
+static void mb_disas_set_info(CPUState *cpu, disassemble_info *info)
+{
+ info->mach = bfd_arch_microblaze;
+ info->print_insn = print_insn_microblaze;
+}
+
+static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+ CPUState *cs = CPU(dev);
+ MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(dev);
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+ uint8_t version_code = 0;
+ int i = 0;
+ Error *local_err = NULL;
+
+ cpu_exec_realizefn(cs, &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ qemu_init_vcpu(cs);
+
+ env->pvr.regs[0] = PVR0_USE_BARREL_MASK \
+ | PVR0_USE_DIV_MASK \
+ | PVR0_USE_HW_MUL_MASK \
+ | PVR0_USE_EXC_MASK \
+ | PVR0_USE_ICACHE_MASK \
+ | PVR0_USE_DCACHE_MASK \
+ | (0xb << 8);
+ env->pvr.regs[2] = PVR2_D_OPB_MASK \
+ | PVR2_D_LMB_MASK \
+ | PVR2_I_OPB_MASK \
+ | PVR2_I_LMB_MASK \
+ | PVR2_USE_MSR_INSTR \
+ | PVR2_USE_PCMP_INSTR \
+ | PVR2_USE_BARREL_MASK \
+ | PVR2_USE_DIV_MASK \
+ | PVR2_USE_HW_MUL_MASK \
+ | PVR2_USE_MUL64_MASK \
+ | PVR2_FPU_EXC_MASK \
+ | 0;
+
+ for (i = 0; mb_cpu_lookup[i].name && cpu->cfg.version; i++) {
+ if (strcmp(mb_cpu_lookup[i].name, cpu->cfg.version) == 0) {
+ version_code = mb_cpu_lookup[i].version_id;
+ break;
+ }
+ }
+
+ if (!version_code) {
+ qemu_log("Invalid MicroBlaze version number: %s\n", cpu->cfg.version);
+ }
+
+ env->pvr.regs[0] |= (cpu->cfg.stackprot ? PVR0_SPROT_MASK : 0) |
+ (cpu->cfg.use_fpu ? PVR0_USE_FPU_MASK : 0) |
+ (cpu->cfg.use_mmu ? PVR0_USE_MMU_MASK : 0) |
+ (cpu->cfg.endi ? PVR0_ENDI_MASK : 0) |
+ (version_code << 16) |
+ (cpu->cfg.pvr == C_PVR_FULL ? PVR0_PVR_FULL_MASK : 0);
+
+ env->pvr.regs[2] |= (cpu->cfg.use_fpu ? PVR2_USE_FPU_MASK : 0) |
+ (cpu->cfg.use_fpu > 1 ? PVR2_USE_FPU2_MASK : 0);
+
+ env->pvr.regs[5] |= cpu->cfg.dcache_writeback ?
+ PVR5_DCACHE_WRITEBACK_MASK : 0;
+
+ env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family. */
+ env->pvr.regs[11] = PVR11_USE_MMU | (16 << 17);
+
+ mcc->parent_realize(dev, errp);
+}
+
+static void mb_cpu_initfn(Object *obj)
+{
+ CPUState *cs = CPU(obj);
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(obj);
+ CPUMBState *env = &cpu->env;
+ static bool tcg_initialized;
+
+ cs->env_ptr = env;
+
+ set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+
+#ifndef CONFIG_USER_ONLY
+ /* Inbound IRQ and FIR lines */
+ qdev_init_gpio_in(DEVICE(cpu), microblaze_cpu_set_irq, 2);
+#endif
+
+ if (tcg_enabled() && !tcg_initialized) {
+ tcg_initialized = true;
+ mb_tcg_init();
+ }
+}
+
+static const VMStateDescription vmstate_mb_cpu = {
+ .name = "cpu",
+ .unmigratable = 1,
+};
+
+static Property mb_properties[] = {
+ DEFINE_PROP_UINT32("base-vectors", MicroBlazeCPU, cfg.base_vectors, 0),
+ DEFINE_PROP_BOOL("use-stack-protection", MicroBlazeCPU, cfg.stackprot,
+ false),
+ /* If use-fpu > 0 - FPU is enabled
+ * If use-fpu = 2 - Floating point conversion and square root instructions
+ * are enabled
+ */
+ DEFINE_PROP_UINT8("use-fpu", MicroBlazeCPU, cfg.use_fpu, 2),
+ DEFINE_PROP_BOOL("use-mmu", MicroBlazeCPU, cfg.use_mmu, true),
+ DEFINE_PROP_BOOL("dcache-writeback", MicroBlazeCPU, cfg.dcache_writeback,
+ false),
+ DEFINE_PROP_BOOL("endianness", MicroBlazeCPU, cfg.endi, false),
+ DEFINE_PROP_STRING("version", MicroBlazeCPU, cfg.version),
+ DEFINE_PROP_UINT8("pvr", MicroBlazeCPU, cfg.pvr, C_PVR_FULL),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void mb_cpu_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ CPUClass *cc = CPU_CLASS(oc);
+ MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_CLASS(oc);
+
+ mcc->parent_realize = dc->realize;
+ dc->realize = mb_cpu_realizefn;
+
+ mcc->parent_reset = cc->reset;
+ cc->reset = mb_cpu_reset;
+
+ cc->has_work = mb_cpu_has_work;
+ cc->do_interrupt = mb_cpu_do_interrupt;
+ cc->cpu_exec_interrupt = mb_cpu_exec_interrupt;
+ cc->dump_state = mb_cpu_dump_state;
+ cc->set_pc = mb_cpu_set_pc;
+ cc->gdb_read_register = mb_cpu_gdb_read_register;
+ cc->gdb_write_register = mb_cpu_gdb_write_register;
+#ifdef CONFIG_USER_ONLY
+ cc->handle_mmu_fault = mb_cpu_handle_mmu_fault;
+#else
+ cc->do_unassigned_access = mb_cpu_unassigned_access;
+ cc->get_phys_page_debug = mb_cpu_get_phys_page_debug;
+#endif
+ dc->vmsd = &vmstate_mb_cpu;
+ dc->props = mb_properties;
+ cc->gdb_num_core_regs = 32 + 5;
+
+ cc->disas_set_info = mb_disas_set_info;
+}
+
+static const TypeInfo mb_cpu_type_info = {
+ .name = TYPE_MICROBLAZE_CPU,
+ .parent = TYPE_CPU,
+ .instance_size = sizeof(MicroBlazeCPU),
+ .instance_init = mb_cpu_initfn,
+ .class_size = sizeof(MicroBlazeCPUClass),
+ .class_init = mb_cpu_class_init,
+};
+
+static void mb_cpu_register_types(void)
+{
+ type_register_static(&mb_cpu_type_info);
+}
+
+type_init(mb_cpu_register_types)
diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
new file mode 100644
index 0000000..beb75ff
--- /dev/null
+++ b/target/microblaze/cpu.h
@@ -0,0 +1,381 @@
+/*
+ * MicroBlaze virtual CPU header
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MICROBLAZE_CPU_H
+#define MICROBLAZE_CPU_H
+
+#include "qemu-common.h"
+#include "cpu-qom.h"
+
+#define TARGET_LONG_BITS 32
+
+#define CPUArchState struct CPUMBState
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat.h"
+struct CPUMBState;
+typedef struct CPUMBState CPUMBState;
+#if !defined(CONFIG_USER_ONLY)
+#include "mmu.h"
+#endif
+
+#define EXCP_MMU 1
+#define EXCP_IRQ 2
+#define EXCP_BREAK 3
+#define EXCP_HW_BREAK 4
+#define EXCP_HW_EXCP 5
+
+/* MicroBlaze-specific interrupt pending bits. */
+#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3
+
+/* Meanings of the MBCPU object's two inbound GPIO lines */
+#define MB_CPU_IRQ 0
+#define MB_CPU_FIR 1
+
+/* Register aliases. R0 - R15 */
+#define R_SP 1
+#define SR_PC 0
+#define SR_MSR 1
+#define SR_EAR 3
+#define SR_ESR 5
+#define SR_FSR 7
+#define SR_BTR 0xb
+#define SR_EDR 0xd
+
+/* MSR flags. */
+#define MSR_BE (1<<0) /* 0x001 */
+#define MSR_IE (1<<1) /* 0x002 */
+#define MSR_C (1<<2) /* 0x004 */
+#define MSR_BIP (1<<3) /* 0x008 */
+#define MSR_FSL (1<<4) /* 0x010 */
+#define MSR_ICE (1<<5) /* 0x020 */
+#define MSR_DZ (1<<6) /* 0x040 */
+#define MSR_DCE (1<<7) /* 0x080 */
+#define MSR_EE (1<<8) /* 0x100 */
+#define MSR_EIP (1<<9) /* 0x200 */
+#define MSR_PVR (1<<10) /* 0x400 */
+#define MSR_CC (1<<31)
+
+/* Machine State Register (MSR) Fields */
+#define MSR_UM (1<<11) /* User Mode */
+#define MSR_UMS (1<<12) /* User Mode Save */
+#define MSR_VM (1<<13) /* Virtual Mode */
+#define MSR_VMS (1<<14) /* Virtual Mode Save */
+
+#define MSR_KERNEL MSR_EE|MSR_VM
+//#define MSR_USER MSR_KERNEL|MSR_UM|MSR_IE
+#define MSR_KERNEL_VMS MSR_EE|MSR_VMS
+//#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE
+
+/* Exception State Register (ESR) Fields */
+#define ESR_DIZ (1<<11) /* Zone Protection */
+#define ESR_S (1<<10) /* Store instruction */
+
+#define ESR_ESS_FSL_OFFSET 5
+
+#define ESR_EC_FSL 0
+#define ESR_EC_UNALIGNED_DATA 1
+#define ESR_EC_ILLEGAL_OP 2
+#define ESR_EC_INSN_BUS 3
+#define ESR_EC_DATA_BUS 4
+#define ESR_EC_DIVZERO 5
+#define ESR_EC_FPU 6
+#define ESR_EC_PRIVINSN 7
+#define ESR_EC_STACKPROT 7 /* Same as PRIVINSN. */
+#define ESR_EC_DATA_STORAGE 8
+#define ESR_EC_INSN_STORAGE 9
+#define ESR_EC_DATA_TLB 10
+#define ESR_EC_INSN_TLB 11
+#define ESR_EC_MASK 31
+
+/* Floating Point Status Register (FSR) Bits */
+#define FSR_IO (1<<4) /* Invalid operation */
+#define FSR_DZ (1<<3) /* Divide-by-zero */
+#define FSR_OF (1<<2) /* Overflow */
+#define FSR_UF (1<<1) /* Underflow */
+#define FSR_DO (1<<0) /* Denormalized operand error */
+
+/* Version reg. */
+/* Basic PVR mask */
+#define PVR0_PVR_FULL_MASK 0x80000000
+#define PVR0_USE_BARREL_MASK 0x40000000
+#define PVR0_USE_DIV_MASK 0x20000000
+#define PVR0_USE_HW_MUL_MASK 0x10000000
+#define PVR0_USE_FPU_MASK 0x08000000
+#define PVR0_USE_EXC_MASK 0x04000000
+#define PVR0_USE_ICACHE_MASK 0x02000000
+#define PVR0_USE_DCACHE_MASK 0x01000000
+#define PVR0_USE_MMU_MASK 0x00800000
+#define PVR0_USE_BTC 0x00400000
+#define PVR0_ENDI_MASK 0x00200000
+#define PVR0_FAULT 0x00100000
+#define PVR0_VERSION_MASK 0x0000FF00
+#define PVR0_USER1_MASK 0x000000FF
+#define PVR0_SPROT_MASK 0x00000001
+
+/* User 2 PVR mask */
+#define PVR1_USER2_MASK 0xFFFFFFFF
+
+/* Configuration PVR masks */
+#define PVR2_D_OPB_MASK 0x80000000
+#define PVR2_D_LMB_MASK 0x40000000
+#define PVR2_I_OPB_MASK 0x20000000
+#define PVR2_I_LMB_MASK 0x10000000
+#define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000
+#define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000
+#define PVR2_D_PLB_MASK 0x02000000 /* new */
+#define PVR2_I_PLB_MASK 0x01000000 /* new */
+#define PVR2_INTERCONNECT 0x00800000 /* new */
+#define PVR2_USE_EXTEND_FSL 0x00080000 /* new */
+#define PVR2_USE_FSL_EXC 0x00040000 /* new */
+#define PVR2_USE_MSR_INSTR 0x00020000
+#define PVR2_USE_PCMP_INSTR 0x00010000
+#define PVR2_AREA_OPTIMISED 0x00008000
+#define PVR2_USE_BARREL_MASK 0x00004000
+#define PVR2_USE_DIV_MASK 0x00002000
+#define PVR2_USE_HW_MUL_MASK 0x00001000
+#define PVR2_USE_FPU_MASK 0x00000800
+#define PVR2_USE_MUL64_MASK 0x00000400
+#define PVR2_USE_FPU2_MASK 0x00000200 /* new */
+#define PVR2_USE_IPLBEXC 0x00000100
+#define PVR2_USE_DPLBEXC 0x00000080
+#define PVR2_OPCODE_0x0_ILL_MASK 0x00000040
+#define PVR2_UNALIGNED_EXC_MASK 0x00000020
+#define PVR2_ILL_OPCODE_EXC_MASK 0x00000010
+#define PVR2_IOPB_BUS_EXC_MASK 0x00000008
+#define PVR2_DOPB_BUS_EXC_MASK 0x00000004
+#define PVR2_DIV_ZERO_EXC_MASK 0x00000002
+#define PVR2_FPU_EXC_MASK 0x00000001
+
+/* Debug and exception PVR masks */
+#define PVR3_DEBUG_ENABLED_MASK 0x80000000
+#define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000
+#define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000
+#define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000
+#define PVR3_FSL_LINKS_MASK 0x00000380
+
+/* ICache config PVR masks */
+#define PVR4_USE_ICACHE_MASK 0x80000000
+#define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000
+#define PVR4_ICACHE_USE_FSL_MASK 0x02000000
+#define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000
+#define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000
+#define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000
+
+/* DCache config PVR masks */
+#define PVR5_USE_DCACHE_MASK 0x80000000
+#define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000
+#define PVR5_DCACHE_USE_FSL_MASK 0x02000000
+#define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000
+#define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000
+#define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000
+#define PVR5_DCACHE_WRITEBACK_MASK 0x00004000
+
+/* ICache base address PVR mask */
+#define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF
+
+/* ICache high address PVR mask */
+#define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF
+
+/* DCache base address PVR mask */
+#define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF
+
+/* DCache high address PVR mask */
+#define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF
+
+/* Target family PVR mask */
+#define PVR10_TARGET_FAMILY_MASK 0xFF000000
+
+/* MMU descrtiption */
+#define PVR11_USE_MMU 0xC0000000
+#define PVR11_MMU_ITLB_SIZE 0x38000000
+#define PVR11_MMU_DTLB_SIZE 0x07000000
+#define PVR11_MMU_TLB_ACCESS 0x00C00000
+#define PVR11_MMU_ZONES 0x003E0000
+/* MSR Reset value PVR mask */
+#define PVR11_MSR_RESET_VALUE_MASK 0x000007FF
+
+#define C_PVR_NONE 0
+#define C_PVR_BASIC 1
+#define C_PVR_FULL 2
+
+/* CPU flags. */
+
+/* Condition codes. */
+#define CC_GE 5
+#define CC_GT 4
+#define CC_LE 3
+#define CC_LT 2
+#define CC_NE 1
+#define CC_EQ 0
+
+#define NB_MMU_MODES 3
+
+#define STREAM_EXCEPTION (1 << 0)
+#define STREAM_ATOMIC (1 << 1)
+#define STREAM_TEST (1 << 2)
+#define STREAM_CONTROL (1 << 3)
+#define STREAM_NONBLOCK (1 << 4)
+
+struct CPUMBState {
+ uint32_t debug;
+ uint32_t btaken;
+ uint32_t btarget;
+ uint32_t bimm;
+
+ uint32_t imm;
+ uint32_t regs[33];
+ uint32_t sregs[24];
+ float_status fp_status;
+ /* Stack protectors. Yes, it's a hw feature. */
+ uint32_t slr, shr;
+
+ /* lwx/swx reserved address */
+#define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */
+ uint32_t res_addr;
+ uint32_t res_val;
+
+ /* Internal flags. */
+#define IMM_FLAG 4
+#define MSR_EE_FLAG (1 << 8)
+#define DRTI_FLAG (1 << 16)
+#define DRTE_FLAG (1 << 17)
+#define DRTB_FLAG (1 << 18)
+#define D_FLAG (1 << 19) /* Bit in ESR. */
+/* TB dependent CPUMBState. */
+#define IFLAGS_TB_MASK (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)
+ uint32_t iflags;
+
+#if !defined(CONFIG_USER_ONLY)
+ /* Unified MMU. */
+ struct microblaze_mmu mmu;
+#endif
+
+ CPU_COMMON
+
+ /* These fields are preserved on reset. */
+
+ struct {
+ uint32_t regs[16];
+ } pvr;
+};
+
+/**
+ * MicroBlazeCPU:
+ * @env: #CPUMBState
+ *
+ * A MicroBlaze CPU.
+ */
+struct MicroBlazeCPU {
+ /*< private >*/
+ CPUState parent_obj;
+
+ /*< public >*/
+
+ /* Microblaze Configuration Settings */
+ struct {
+ bool stackprot;
+ uint32_t base_vectors;
+ uint8_t use_fpu;
+ bool use_mmu;
+ bool dcache_writeback;
+ bool endi;
+ char *version;
+ uint8_t pvr;
+ } cfg;
+
+ CPUMBState env;
+};
+
+static inline MicroBlazeCPU *mb_env_get_cpu(CPUMBState *env)
+{
+ return container_of(env, MicroBlazeCPU, env);
+}
+
+#define ENV_GET_CPU(e) CPU(mb_env_get_cpu(e))
+
+#define ENV_OFFSET offsetof(MicroBlazeCPU, env)
+
+void mb_cpu_do_interrupt(CPUState *cs);
+bool mb_cpu_exec_interrupt(CPUState *cs, int int_req);
+void mb_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
+ int flags);
+hwaddr mb_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
+int mb_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
+int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
+
+void mb_tcg_init(void);
+MicroBlazeCPU *cpu_mb_init(const char *cpu_model);
+/* you can call this signal handler from your SIGBUS and SIGSEGV
+ signal handlers to inform the virtual CPU of exceptions. non zero
+ is returned if the signal was handled by the virtual CPU. */
+int cpu_mb_signal_handler(int host_signum, void *pinfo,
+ void *puc);
+
+/* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */
+#define TARGET_PAGE_BITS 12
+
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+
+#define cpu_init(cpu_model) CPU(cpu_mb_init(cpu_model))
+
+#define cpu_signal_handler cpu_mb_signal_handler
+
+/* MMU modes definitions */
+#define MMU_MODE0_SUFFIX _nommu
+#define MMU_MODE1_SUFFIX _kernel
+#define MMU_MODE2_SUFFIX _user
+#define MMU_NOMMU_IDX 0
+#define MMU_KERNEL_IDX 1
+#define MMU_USER_IDX 2
+/* See NB_MMU_MODES further up the file. */
+
+static inline int cpu_mmu_index (CPUMBState *env, bool ifetch)
+{
+ /* Are we in nommu mode?. */
+ if (!(env->sregs[SR_MSR] & MSR_VM))
+ return MMU_NOMMU_IDX;
+
+ if (env->sregs[SR_MSR] & MSR_UM)
+ return MMU_USER_IDX;
+ return MMU_KERNEL_IDX;
+}
+
+int mb_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+ int mmu_idx);
+
+#include "exec/cpu-all.h"
+
+static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc,
+ target_ulong *cs_base, uint32_t *flags)
+{
+ *pc = env->sregs[SR_PC];
+ *cs_base = 0;
+ *flags = (env->iflags & IFLAGS_TB_MASK) |
+ (env->sregs[SR_MSR] & (MSR_UM | MSR_VM | MSR_EE));
+}
+
+#if !defined(CONFIG_USER_ONLY)
+void mb_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
+ bool is_write, bool is_exec, int is_asi,
+ unsigned size);
+#endif
+
+#endif
diff --git a/target/microblaze/gdbstub.c b/target/microblaze/gdbstub.c
new file mode 100644
index 0000000..7fb076c
--- /dev/null
+++ b/target/microblaze/gdbstub.c
@@ -0,0 +1,57 @@
+/*
+ * MicroBlaze gdb server stub
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ * Copyright (c) 2013 SUSE LINUX Products GmbH
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "cpu.h"
+#include "exec/gdbstub.h"
+
+int mb_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+
+ if (n < 32) {
+ return gdb_get_reg32(mem_buf, env->regs[n]);
+ } else {
+ return gdb_get_reg32(mem_buf, env->sregs[n - 32]);
+ }
+ return 0;
+}
+
+int mb_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUClass *cc = CPU_GET_CLASS(cs);
+ CPUMBState *env = &cpu->env;
+ uint32_t tmp;
+
+ if (n > cc->gdb_num_core_regs) {
+ return 0;
+ }
+
+ tmp = ldl_p(mem_buf);
+
+ if (n < 32) {
+ env->regs[n] = tmp;
+ } else {
+ env->sregs[n - 32] = tmp;
+ }
+ return 4;
+}
diff --git a/target/microblaze/helper.c b/target/microblaze/helper.c
new file mode 100644
index 0000000..da394d1
--- /dev/null
+++ b/target/microblaze/helper.c
@@ -0,0 +1,307 @@
+/*
+ * MicroBlaze helper routines.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias <edgar.iglesias@gmail.com>
+ * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/exec-all.h"
+#include "qemu/host-utils.h"
+#include "exec/log.h"
+
+#define D(x)
+
+#if defined(CONFIG_USER_ONLY)
+
+void mb_cpu_do_interrupt(CPUState *cs)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+
+ cs->exception_index = -1;
+ env->res_addr = RES_ADDR_NONE;
+ env->regs[14] = env->sregs[SR_PC];
+}
+
+int mb_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+ int mmu_idx)
+{
+ cs->exception_index = 0xaa;
+ cpu_dump_state(cs, stderr, fprintf, 0);
+ return 1;
+}
+
+#else /* !CONFIG_USER_ONLY */
+
+int mb_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+ int mmu_idx)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+ unsigned int hit;
+ unsigned int mmu_available;
+ int r = 1;
+ int prot;
+
+ mmu_available = 0;
+ if (cpu->cfg.use_mmu) {
+ mmu_available = 1;
+ if ((cpu->cfg.pvr == C_PVR_FULL) &&
+ (env->pvr.regs[11] & PVR11_USE_MMU) != PVR11_USE_MMU) {
+ mmu_available = 0;
+ }
+ }
+
+ /* Translate if the MMU is available and enabled. */
+ if (mmu_available && (env->sregs[SR_MSR] & MSR_VM)) {
+ target_ulong vaddr, paddr;
+ struct microblaze_mmu_lookup lu;
+
+ hit = mmu_translate(&env->mmu, &lu, address, rw, mmu_idx);
+ if (hit) {
+ vaddr = address & TARGET_PAGE_MASK;
+ paddr = lu.paddr + vaddr - lu.vaddr;
+
+ qemu_log_mask(CPU_LOG_MMU, "MMU map mmu=%d v=%x p=%x prot=%x\n",
+ mmu_idx, vaddr, paddr, lu.prot);
+ tlb_set_page(cs, vaddr, paddr, lu.prot, mmu_idx, TARGET_PAGE_SIZE);
+ r = 0;
+ } else {
+ env->sregs[SR_EAR] = address;
+ qemu_log_mask(CPU_LOG_MMU, "mmu=%d miss v=%" VADDR_PRIx "\n",
+ mmu_idx, address);
+
+ switch (lu.err) {
+ case ERR_PROT:
+ env->sregs[SR_ESR] = rw == 2 ? 17 : 16;
+ env->sregs[SR_ESR] |= (rw == 1) << 10;
+ break;
+ case ERR_MISS:
+ env->sregs[SR_ESR] = rw == 2 ? 19 : 18;
+ env->sregs[SR_ESR] |= (rw == 1) << 10;
+ break;
+ default:
+ abort();
+ break;
+ }
+
+ if (cs->exception_index == EXCP_MMU) {
+ cpu_abort(cs, "recursive faults\n");
+ }
+
+ /* TLB miss. */
+ cs->exception_index = EXCP_MMU;
+ }
+ } else {
+ /* MMU disabled or not available. */
+ address &= TARGET_PAGE_MASK;
+ prot = PAGE_BITS;
+ tlb_set_page(cs, address, address, prot, mmu_idx, TARGET_PAGE_SIZE);
+ r = 0;
+ }
+ return r;
+}
+
+void mb_cpu_do_interrupt(CPUState *cs)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+ uint32_t t;
+
+ /* IMM flag cannot propagate across a branch and into the dslot. */
+ assert(!((env->iflags & D_FLAG) && (env->iflags & IMM_FLAG)));
+ assert(!(env->iflags & (DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)));
+/* assert(env->sregs[SR_MSR] & (MSR_EE)); Only for HW exceptions. */
+ env->res_addr = RES_ADDR_NONE;
+ switch (cs->exception_index) {
+ case EXCP_HW_EXCP:
+ if (!(env->pvr.regs[0] & PVR0_USE_EXC_MASK)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Exception raised on system without exceptions!\n");
+ return;
+ }
+
+ env->regs[17] = env->sregs[SR_PC] + 4;
+ env->sregs[SR_ESR] &= ~(1 << 12);
+
+ /* Exception breaks branch + dslot sequence? */
+ if (env->iflags & D_FLAG) {
+ env->sregs[SR_ESR] |= 1 << 12 ;
+ env->sregs[SR_BTR] = env->btarget;
+ }
+
+ /* Disable the MMU. */
+ t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
+ env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
+ env->sregs[SR_MSR] |= t;
+ /* Exception in progress. */
+ env->sregs[SR_MSR] |= MSR_EIP;
+
+ qemu_log_mask(CPU_LOG_INT,
+ "hw exception at pc=%x ear=%x esr=%x iflags=%x\n",
+ env->sregs[SR_PC], env->sregs[SR_EAR],
+ env->sregs[SR_ESR], env->iflags);
+ log_cpu_state_mask(CPU_LOG_INT, cs, 0);
+ env->iflags &= ~(IMM_FLAG | D_FLAG);
+ env->sregs[SR_PC] = cpu->cfg.base_vectors + 0x20;
+ break;
+
+ case EXCP_MMU:
+ env->regs[17] = env->sregs[SR_PC];
+
+ env->sregs[SR_ESR] &= ~(1 << 12);
+ /* Exception breaks branch + dslot sequence? */
+ if (env->iflags & D_FLAG) {
+ D(qemu_log("D_FLAG set at exception bimm=%d\n", env->bimm));
+ env->sregs[SR_ESR] |= 1 << 12 ;
+ env->sregs[SR_BTR] = env->btarget;
+
+ /* Reexecute the branch. */
+ env->regs[17] -= 4;
+ /* was the branch immprefixed?. */
+ if (env->bimm) {
+ qemu_log_mask(CPU_LOG_INT,
+ "bimm exception at pc=%x iflags=%x\n",
+ env->sregs[SR_PC], env->iflags);
+ env->regs[17] -= 4;
+ log_cpu_state_mask(CPU_LOG_INT, cs, 0);
+ }
+ } else if (env->iflags & IMM_FLAG) {
+ D(qemu_log("IMM_FLAG set at exception\n"));
+ env->regs[17] -= 4;
+ }
+
+ /* Disable the MMU. */
+ t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
+ env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
+ env->sregs[SR_MSR] |= t;
+ /* Exception in progress. */
+ env->sregs[SR_MSR] |= MSR_EIP;
+
+ qemu_log_mask(CPU_LOG_INT,
+ "exception at pc=%x ear=%x iflags=%x\n",
+ env->sregs[SR_PC], env->sregs[SR_EAR], env->iflags);
+ log_cpu_state_mask(CPU_LOG_INT, cs, 0);
+ env->iflags &= ~(IMM_FLAG | D_FLAG);
+ env->sregs[SR_PC] = cpu->cfg.base_vectors + 0x20;
+ break;
+
+ case EXCP_IRQ:
+ assert(!(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP)));
+ assert(env->sregs[SR_MSR] & MSR_IE);
+ assert(!(env->iflags & D_FLAG));
+
+ t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
+
+#if 0
+#include "disas/disas.h"
+
+/* Useful instrumentation when debugging interrupt issues in either
+ the models or in sw. */
+ {
+ const char *sym;
+
+ sym = lookup_symbol(env->sregs[SR_PC]);
+ if (sym
+ && (!strcmp("netif_rx", sym)
+ || !strcmp("process_backlog", sym))) {
+
+ qemu_log(
+ "interrupt at pc=%x msr=%x %x iflags=%x sym=%s\n",
+ env->sregs[SR_PC], env->sregs[SR_MSR], t, env->iflags,
+ sym);
+
+ log_cpu_state(cs, 0);
+ }
+ }
+#endif
+ qemu_log_mask(CPU_LOG_INT,
+ "interrupt at pc=%x msr=%x %x iflags=%x\n",
+ env->sregs[SR_PC], env->sregs[SR_MSR], t, env->iflags);
+
+ env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM \
+ | MSR_UM | MSR_IE);
+ env->sregs[SR_MSR] |= t;
+
+ env->regs[14] = env->sregs[SR_PC];
+ env->sregs[SR_PC] = cpu->cfg.base_vectors + 0x10;
+ //log_cpu_state_mask(CPU_LOG_INT, cs, 0);
+ break;
+
+ case EXCP_BREAK:
+ case EXCP_HW_BREAK:
+ assert(!(env->iflags & IMM_FLAG));
+ assert(!(env->iflags & D_FLAG));
+ t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
+ qemu_log_mask(CPU_LOG_INT,
+ "break at pc=%x msr=%x %x iflags=%x\n",
+ env->sregs[SR_PC], env->sregs[SR_MSR], t, env->iflags);
+ log_cpu_state_mask(CPU_LOG_INT, cs, 0);
+ env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
+ env->sregs[SR_MSR] |= t;
+ env->sregs[SR_MSR] |= MSR_BIP;
+ if (cs->exception_index == EXCP_HW_BREAK) {
+ env->regs[16] = env->sregs[SR_PC];
+ env->sregs[SR_MSR] |= MSR_BIP;
+ env->sregs[SR_PC] = cpu->cfg.base_vectors + 0x18;
+ } else
+ env->sregs[SR_PC] = env->btarget;
+ break;
+ default:
+ cpu_abort(cs, "unhandled exception type=%d\n",
+ cs->exception_index);
+ break;
+ }
+}
+
+hwaddr mb_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+ target_ulong vaddr, paddr = 0;
+ struct microblaze_mmu_lookup lu;
+ unsigned int hit;
+
+ if (env->sregs[SR_MSR] & MSR_VM) {
+ hit = mmu_translate(&env->mmu, &lu, addr, 0, 0);
+ if (hit) {
+ vaddr = addr & TARGET_PAGE_MASK;
+ paddr = lu.paddr + vaddr - lu.vaddr;
+ } else
+ paddr = 0; /* ???. */
+ } else
+ paddr = addr & TARGET_PAGE_MASK;
+
+ return paddr;
+}
+#endif
+
+bool mb_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+
+ if ((interrupt_request & CPU_INTERRUPT_HARD)
+ && (env->sregs[SR_MSR] & MSR_IE)
+ && !(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP))
+ && !(env->iflags & (D_FLAG | IMM_FLAG))) {
+ cs->exception_index = EXCP_IRQ;
+ mb_cpu_do_interrupt(cs);
+ return true;
+ }
+ return false;
+}
diff --git a/target/microblaze/helper.h b/target/microblaze/helper.h
new file mode 100644
index 0000000..bd13826
--- /dev/null
+++ b/target/microblaze/helper.h
@@ -0,0 +1,37 @@
+DEF_HELPER_2(raise_exception, void, env, i32)
+DEF_HELPER_1(debug, void, env)
+DEF_HELPER_FLAGS_3(carry, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32)
+DEF_HELPER_2(cmp, i32, i32, i32)
+DEF_HELPER_2(cmpu, i32, i32, i32)
+DEF_HELPER_FLAGS_1(clz, TCG_CALL_NO_RWG_SE, i32, i32)
+
+DEF_HELPER_3(divs, i32, env, i32, i32)
+DEF_HELPER_3(divu, i32, env, i32, i32)
+
+DEF_HELPER_3(fadd, i32, env, i32, i32)
+DEF_HELPER_3(frsub, i32, env, i32, i32)
+DEF_HELPER_3(fmul, i32, env, i32, i32)
+DEF_HELPER_3(fdiv, i32, env, i32, i32)
+DEF_HELPER_2(flt, i32, env, i32)
+DEF_HELPER_2(fint, i32, env, i32)
+DEF_HELPER_2(fsqrt, i32, env, i32)
+
+DEF_HELPER_3(fcmp_un, i32, env, i32, i32)
+DEF_HELPER_3(fcmp_lt, i32, env, i32, i32)
+DEF_HELPER_3(fcmp_eq, i32, env, i32, i32)
+DEF_HELPER_3(fcmp_le, i32, env, i32, i32)
+DEF_HELPER_3(fcmp_gt, i32, env, i32, i32)
+DEF_HELPER_3(fcmp_ne, i32, env, i32, i32)
+DEF_HELPER_3(fcmp_ge, i32, env, i32, i32)
+
+DEF_HELPER_FLAGS_2(pcmpbf, TCG_CALL_NO_RWG_SE, i32, i32, i32)
+#if !defined(CONFIG_USER_ONLY)
+DEF_HELPER_2(mmu_read, i32, env, i32)
+DEF_HELPER_3(mmu_write, void, env, i32, i32)
+#endif
+
+DEF_HELPER_5(memalign, void, env, i32, i32, i32, i32)
+DEF_HELPER_2(stackprot, void, env, i32)
+
+DEF_HELPER_2(get, i32, i32, i32)
+DEF_HELPER_3(put, void, i32, i32, i32)
diff --git a/target/microblaze/microblaze-decode.h b/target/microblaze/microblaze-decode.h
new file mode 100644
index 0000000..401319e
--- /dev/null
+++ b/target/microblaze/microblaze-decode.h
@@ -0,0 +1,55 @@
+/*
+ * MicroBlaze insn decoding macros.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias <edgar.iglesias@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Convenient binary macros. */
+#define HEX__(n) 0x##n##LU
+#define B8__(x) ((x&0x0000000FLU)?1:0) \
+ + ((x&0x000000F0LU)?2:0) \
+ + ((x&0x00000F00LU)?4:0) \
+ + ((x&0x0000F000LU)?8:0) \
+ + ((x&0x000F0000LU)?16:0) \
+ + ((x&0x00F00000LU)?32:0) \
+ + ((x&0x0F000000LU)?64:0) \
+ + ((x&0xF0000000LU)?128:0)
+#define B8(d) ((unsigned char)B8__(HEX__(d)))
+
+/* Decode logic, value and mask. */
+#define DEC_ADD {B8(00000000), B8(00110001)}
+#define DEC_SUB {B8(00000001), B8(00110001)}
+#define DEC_AND {B8(00100001), B8(00110101)}
+#define DEC_XOR {B8(00100010), B8(00110111)}
+#define DEC_OR {B8(00100000), B8(00110111)}
+#define DEC_BIT {B8(00100100), B8(00111111)}
+#define DEC_MSR {B8(00100101), B8(00111111)}
+
+#define DEC_BARREL {B8(00010001), B8(00110111)}
+#define DEC_MUL {B8(00010000), B8(00110111)}
+#define DEC_DIV {B8(00010010), B8(00110111)}
+#define DEC_FPU {B8(00010110), B8(00111111)}
+
+#define DEC_LD {B8(00110000), B8(00110100)}
+#define DEC_ST {B8(00110100), B8(00110100)}
+#define DEC_IMM {B8(00101100), B8(00111111)}
+
+#define DEC_BR {B8(00100110), B8(00110111)}
+#define DEC_BCC {B8(00100111), B8(00110111)}
+#define DEC_RTS {B8(00101101), B8(00111111)}
+
+#define DEC_STREAM {B8(00010011), B8(00110111)}
+
diff --git a/target/microblaze/mmu.c b/target/microblaze/mmu.c
new file mode 100644
index 0000000..a22a496
--- /dev/null
+++ b/target/microblaze/mmu.c
@@ -0,0 +1,303 @@
+/*
+ * Microblaze MMU emulation for qemu.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias
+ * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/exec-all.h"
+
+#define D(x)
+
+static unsigned int tlb_decode_size(unsigned int f)
+{
+ static const unsigned int sizes[] = {
+ 1 * 1024, 4 * 1024, 16 * 1024, 64 * 1024, 256 * 1024,
+ 1 * 1024 * 1024, 4 * 1024 * 1024, 16 * 1024 * 1024
+ };
+ assert(f < ARRAY_SIZE(sizes));
+ return sizes[f];
+}
+
+static void mmu_flush_idx(CPUMBState *env, unsigned int idx)
+{
+ CPUState *cs = CPU(mb_env_get_cpu(env));
+ struct microblaze_mmu *mmu = &env->mmu;
+ unsigned int tlb_size;
+ uint32_t tlb_tag, end, t;
+
+ t = mmu->rams[RAM_TAG][idx];
+ if (!(t & TLB_VALID))
+ return;
+
+ tlb_tag = t & TLB_EPN_MASK;
+ tlb_size = tlb_decode_size((t & TLB_PAGESZ_MASK) >> 7);
+ end = tlb_tag + tlb_size;
+
+ while (tlb_tag < end) {
+ tlb_flush_page(cs, tlb_tag);
+ tlb_tag += TARGET_PAGE_SIZE;
+ }
+}
+
+static void mmu_change_pid(CPUMBState *env, unsigned int newpid)
+{
+ struct microblaze_mmu *mmu = &env->mmu;
+ unsigned int i;
+ uint32_t t;
+
+ if (newpid & ~0xff)
+ qemu_log_mask(LOG_GUEST_ERROR, "Illegal rpid=%x\n", newpid);
+
+ for (i = 0; i < ARRAY_SIZE(mmu->rams[RAM_TAG]); i++) {
+ /* Lookup and decode. */
+ t = mmu->rams[RAM_TAG][i];
+ if (t & TLB_VALID) {
+ if (mmu->tids[i] && ((mmu->regs[MMU_R_PID] & 0xff) == mmu->tids[i]))
+ mmu_flush_idx(env, i);
+ }
+ }
+}
+
+/* rw - 0 = read, 1 = write, 2 = fetch. */
+unsigned int mmu_translate(struct microblaze_mmu *mmu,
+ struct microblaze_mmu_lookup *lu,
+ target_ulong vaddr, int rw, int mmu_idx)
+{
+ unsigned int i, hit = 0;
+ unsigned int tlb_ex = 0, tlb_wr = 0, tlb_zsel;
+ unsigned int tlb_size;
+ uint32_t tlb_tag, tlb_rpn, mask, t0;
+
+ lu->err = ERR_MISS;
+ for (i = 0; i < ARRAY_SIZE(mmu->rams[RAM_TAG]); i++) {
+ uint32_t t, d;
+
+ /* Lookup and decode. */
+ t = mmu->rams[RAM_TAG][i];
+ D(qemu_log("TLB %d valid=%d\n", i, t & TLB_VALID));
+ if (t & TLB_VALID) {
+ tlb_size = tlb_decode_size((t & TLB_PAGESZ_MASK) >> 7);
+ if (tlb_size < TARGET_PAGE_SIZE) {
+ qemu_log("%d pages not supported\n", tlb_size);
+ abort();
+ }
+
+ mask = ~(tlb_size - 1);
+ tlb_tag = t & TLB_EPN_MASK;
+ if ((vaddr & mask) != (tlb_tag & mask)) {
+ D(qemu_log("TLB %d vaddr=%x != tag=%x\n",
+ i, vaddr & mask, tlb_tag & mask));
+ continue;
+ }
+ if (mmu->tids[i]
+ && ((mmu->regs[MMU_R_PID] & 0xff) != mmu->tids[i])) {
+ D(qemu_log("TLB %d pid=%x != tid=%x\n",
+ i, mmu->regs[MMU_R_PID], mmu->tids[i]));
+ continue;
+ }
+
+ /* Bring in the data part. */
+ d = mmu->rams[RAM_DATA][i];
+ tlb_ex = d & TLB_EX;
+ tlb_wr = d & TLB_WR;
+
+ /* Now let's see if there is a zone that overrides the protbits. */
+ tlb_zsel = (d >> 4) & 0xf;
+ t0 = mmu->regs[MMU_R_ZPR] >> (30 - (tlb_zsel * 2));
+ t0 &= 0x3;
+
+ if (tlb_zsel > mmu->c_mmu_zones) {
+ qemu_log_mask(LOG_GUEST_ERROR, "tlb zone select out of range! %d\n", tlb_zsel);
+ t0 = 1; /* Ignore. */
+ }
+
+ if (mmu->c_mmu == 1) {
+ t0 = 1; /* Zones are disabled. */
+ }
+
+ switch (t0) {
+ case 0:
+ if (mmu_idx == MMU_USER_IDX)
+ continue;
+ break;
+ case 2:
+ if (mmu_idx != MMU_USER_IDX) {
+ tlb_ex = 1;
+ tlb_wr = 1;
+ }
+ break;
+ case 3:
+ tlb_ex = 1;
+ tlb_wr = 1;
+ break;
+ default: break;
+ }
+
+ lu->err = ERR_PROT;
+ lu->prot = PAGE_READ;
+ if (tlb_wr)
+ lu->prot |= PAGE_WRITE;
+ else if (rw == 1)
+ goto done;
+ if (tlb_ex)
+ lu->prot |=PAGE_EXEC;
+ else if (rw == 2) {
+ goto done;
+ }
+
+ tlb_rpn = d & TLB_RPN_MASK;
+
+ lu->vaddr = tlb_tag;
+ lu->paddr = tlb_rpn;
+ lu->size = tlb_size;
+ lu->err = ERR_HIT;
+ lu->idx = i;
+ hit = 1;
+ goto done;
+ }
+ }
+done:
+ D(qemu_log("MMU vaddr=%x rw=%d tlb_wr=%d tlb_ex=%d hit=%d\n",
+ vaddr, rw, tlb_wr, tlb_ex, hit));
+ return hit;
+}
+
+/* Writes/reads to the MMU's special regs end up here. */
+uint32_t mmu_read(CPUMBState *env, uint32_t rn)
+{
+ unsigned int i;
+ uint32_t r;
+
+ if (env->mmu.c_mmu < 2 || !env->mmu.c_mmu_tlb_access) {
+ qemu_log_mask(LOG_GUEST_ERROR, "MMU access on MMU-less system\n");
+ return 0;
+ }
+
+ switch (rn) {
+ /* Reads to HI/LO trig reads from the mmu rams. */
+ case MMU_R_TLBLO:
+ case MMU_R_TLBHI:
+ if (!(env->mmu.c_mmu_tlb_access & 1)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access to MMU reg %d\n", rn);
+ return 0;
+ }
+
+ i = env->mmu.regs[MMU_R_TLBX] & 0xff;
+ r = env->mmu.rams[rn & 1][i];
+ if (rn == MMU_R_TLBHI)
+ env->mmu.regs[MMU_R_PID] = env->mmu.tids[i];
+ break;
+ case MMU_R_PID:
+ case MMU_R_ZPR:
+ if (!(env->mmu.c_mmu_tlb_access & 1)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access to MMU reg %d\n", rn);
+ return 0;
+ }
+ r = env->mmu.regs[rn];
+ break;
+ default:
+ r = env->mmu.regs[rn];
+ break;
+ }
+ D(qemu_log("%s rn=%d=%x\n", __func__, rn, r));
+ return r;
+}
+
+void mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
+{
+ MicroBlazeCPU *cpu = mb_env_get_cpu(env);
+ unsigned int i;
+ D(qemu_log("%s rn=%d=%x old=%x\n", __func__, rn, v, env->mmu.regs[rn]));
+
+ if (env->mmu.c_mmu < 2 || !env->mmu.c_mmu_tlb_access) {
+ qemu_log_mask(LOG_GUEST_ERROR, "MMU access on MMU-less system\n");
+ return;
+ }
+
+ switch (rn) {
+ /* Writes to HI/LO trig writes to the mmu rams. */
+ case MMU_R_TLBLO:
+ case MMU_R_TLBHI:
+ i = env->mmu.regs[MMU_R_TLBX] & 0xff;
+ if (rn == MMU_R_TLBHI) {
+ if (i < 3 && !(v & TLB_VALID) && qemu_loglevel_mask(~0))
+ qemu_log_mask(LOG_GUEST_ERROR, "invalidating index %x at pc=%x\n",
+ i, env->sregs[SR_PC]);
+ env->mmu.tids[i] = env->mmu.regs[MMU_R_PID] & 0xff;
+ mmu_flush_idx(env, i);
+ }
+ env->mmu.rams[rn & 1][i] = v;
+
+ D(qemu_log("%s ram[%d][%d]=%x\n", __func__, rn & 1, i, v));
+ break;
+ case MMU_R_ZPR:
+ if (env->mmu.c_mmu_tlb_access <= 1) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access to MMU reg %d\n", rn);
+ return;
+ }
+
+ /* Changes to the zone protection reg flush the QEMU TLB.
+ Fortunately, these are very uncommon. */
+ if (v != env->mmu.regs[rn]) {
+ tlb_flush(CPU(cpu), 1);
+ }
+ env->mmu.regs[rn] = v;
+ break;
+ case MMU_R_PID:
+ if (env->mmu.c_mmu_tlb_access <= 1) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access to MMU reg %d\n", rn);
+ return;
+ }
+
+ if (v != env->mmu.regs[rn]) {
+ mmu_change_pid(env, v);
+ env->mmu.regs[rn] = v;
+ }
+ break;
+ case MMU_R_TLBSX:
+ {
+ struct microblaze_mmu_lookup lu;
+ int hit;
+
+ if (env->mmu.c_mmu_tlb_access <= 1) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access to MMU reg %d\n", rn);
+ return;
+ }
+
+ hit = mmu_translate(&env->mmu, &lu,
+ v & TLB_EPN_MASK, 0, cpu_mmu_index(env, false));
+ if (hit) {
+ env->mmu.regs[MMU_R_TLBX] = lu.idx;
+ } else
+ env->mmu.regs[MMU_R_TLBX] |= 0x80000000;
+ break;
+ }
+ default:
+ env->mmu.regs[rn] = v;
+ break;
+ }
+}
+
+void mmu_init(struct microblaze_mmu *mmu)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(mmu->regs); i++) {
+ mmu->regs[i] = 0;
+ }
+}
diff --git a/target/microblaze/mmu.h b/target/microblaze/mmu.h
new file mode 100644
index 0000000..3b7a998
--- /dev/null
+++ b/target/microblaze/mmu.h
@@ -0,0 +1,90 @@
+/*
+ * Microblaze MMU emulation for qemu.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define MMU_R_PID 0
+#define MMU_R_ZPR 1
+#define MMU_R_TLBX 2
+#define MMU_R_TLBLO 3
+#define MMU_R_TLBHI 4
+#define MMU_R_TLBSX 5
+
+#define RAM_DATA 1
+#define RAM_TAG 0
+
+/* Tag portion */
+#define TLB_EPN_MASK 0xFFFFFC00 /* Effective Page Number */
+#define TLB_PAGESZ_MASK 0x00000380
+#define TLB_PAGESZ(x) (((x) & 0x7) << 7)
+#define PAGESZ_1K 0
+#define PAGESZ_4K 1
+#define PAGESZ_16K 2
+#define PAGESZ_64K 3
+#define PAGESZ_256K 4
+#define PAGESZ_1M 5
+#define PAGESZ_4M 6
+#define PAGESZ_16M 7
+#define TLB_VALID 0x00000040 /* Entry is valid */
+
+/* Data portion */
+#define TLB_RPN_MASK 0xFFFFFC00 /* Real Page Number */
+#define TLB_PERM_MASK 0x00000300
+#define TLB_EX 0x00000200 /* Instruction execution allowed */
+#define TLB_WR 0x00000100 /* Writes permitted */
+#define TLB_ZSEL_MASK 0x000000F0
+#define TLB_ZSEL(x) (((x) & 0xF) << 4)
+#define TLB_ATTR_MASK 0x0000000F
+#define TLB_W 0x00000008 /* Caching is write-through */
+#define TLB_I 0x00000004 /* Caching is inhibited */
+#define TLB_M 0x00000002 /* Memory is coherent */
+#define TLB_G 0x00000001 /* Memory is guarded from prefetch */
+
+#define TLB_ENTRIES 64
+
+struct microblaze_mmu
+{
+ /* Data and tag brams. */
+ uint32_t rams[2][TLB_ENTRIES];
+ /* We keep a separate ram for the tids to avoid the 48 bit tag width. */
+ uint8_t tids[TLB_ENTRIES];
+ /* Control flops. */
+ uint32_t regs[8];
+
+ int c_mmu;
+ int c_mmu_tlb_access;
+ int c_mmu_zones;
+};
+
+struct microblaze_mmu_lookup
+{
+ uint32_t paddr;
+ uint32_t vaddr;
+ unsigned int size;
+ unsigned int idx;
+ int prot;
+ enum {
+ ERR_PROT, ERR_MISS, ERR_HIT
+ } err;
+};
+
+unsigned int mmu_translate(struct microblaze_mmu *mmu,
+ struct microblaze_mmu_lookup *lu,
+ target_ulong vaddr, int rw, int mmu_idx);
+uint32_t mmu_read(CPUMBState *env, uint32_t rn);
+void mmu_write(CPUMBState *env, uint32_t rn, uint32_t v);
+void mmu_init(struct microblaze_mmu *mmu);
diff --git a/target/microblaze/op_helper.c b/target/microblaze/op_helper.c
new file mode 100644
index 0000000..4a856e6
--- /dev/null
+++ b/target/microblaze/op_helper.c
@@ -0,0 +1,523 @@
+/*
+ * Microblaze helper routines.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias <edgar.iglesias@gmail.com>.
+ * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "qemu/host-utils.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+
+#define D(x)
+
+#if !defined(CONFIG_USER_ONLY)
+
+/* Try to fill the TLB and return an exception if error. If retaddr is
+ * NULL, it means that the function was called in C code (i.e. not
+ * from generated code or from helper.c)
+ */
+void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type,
+ int mmu_idx, uintptr_t retaddr)
+{
+ int ret;
+
+ ret = mb_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx);
+ if (unlikely(ret)) {
+ if (retaddr) {
+ /* now we have a real cpu fault */
+ cpu_restore_state(cs, retaddr);
+ }
+ cpu_loop_exit(cs);
+ }
+}
+#endif
+
+void helper_put(uint32_t id, uint32_t ctrl, uint32_t data)
+{
+ int test = ctrl & STREAM_TEST;
+ int atomic = ctrl & STREAM_ATOMIC;
+ int control = ctrl & STREAM_CONTROL;
+ int nonblock = ctrl & STREAM_NONBLOCK;
+ int exception = ctrl & STREAM_EXCEPTION;
+
+ qemu_log_mask(LOG_UNIMP, "Unhandled stream put to stream-id=%d data=%x %s%s%s%s%s\n",
+ id, data,
+ test ? "t" : "",
+ nonblock ? "n" : "",
+ exception ? "e" : "",
+ control ? "c" : "",
+ atomic ? "a" : "");
+}
+
+uint32_t helper_get(uint32_t id, uint32_t ctrl)
+{
+ int test = ctrl & STREAM_TEST;
+ int atomic = ctrl & STREAM_ATOMIC;
+ int control = ctrl & STREAM_CONTROL;
+ int nonblock = ctrl & STREAM_NONBLOCK;
+ int exception = ctrl & STREAM_EXCEPTION;
+
+ qemu_log_mask(LOG_UNIMP, "Unhandled stream get from stream-id=%d %s%s%s%s%s\n",
+ id,
+ test ? "t" : "",
+ nonblock ? "n" : "",
+ exception ? "e" : "",
+ control ? "c" : "",
+ atomic ? "a" : "");
+ return 0xdead0000 | id;
+}
+
+void helper_raise_exception(CPUMBState *env, uint32_t index)
+{
+ CPUState *cs = CPU(mb_env_get_cpu(env));
+
+ cs->exception_index = index;
+ cpu_loop_exit(cs);
+}
+
+void helper_debug(CPUMBState *env)
+{
+ int i;
+
+ qemu_log("PC=%8.8x\n", env->sregs[SR_PC]);
+ qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n",
+ env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
+ env->debug, env->imm, env->iflags);
+ qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
+ env->btaken, env->btarget,
+ (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
+ (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",
+ (env->sregs[SR_MSR] & MSR_EIP),
+ (env->sregs[SR_MSR] & MSR_IE));
+ for (i = 0; i < 32; i++) {
+ qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
+ if ((i + 1) % 4 == 0)
+ qemu_log("\n");
+ }
+ qemu_log("\n\n");
+}
+
+static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin)
+{
+ uint32_t cout = 0;
+
+ if ((b == ~0) && cin)
+ cout = 1;
+ else if ((~0 - a) < (b + cin))
+ cout = 1;
+ return cout;
+}
+
+uint32_t helper_cmp(uint32_t a, uint32_t b)
+{
+ uint32_t t;
+
+ t = b + ~a + 1;
+ if ((b & 0x80000000) ^ (a & 0x80000000))
+ t = (t & 0x7fffffff) | (b & 0x80000000);
+ return t;
+}
+
+uint32_t helper_cmpu(uint32_t a, uint32_t b)
+{
+ uint32_t t;
+
+ t = b + ~a + 1;
+ if ((b & 0x80000000) ^ (a & 0x80000000))
+ t = (t & 0x7fffffff) | (a & 0x80000000);
+ return t;
+}
+
+uint32_t helper_clz(uint32_t t0)
+{
+ return clz32(t0);
+}
+
+uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
+{
+ return compute_carry(a, b, cf);
+}
+
+static inline int div_prepare(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ if (b == 0) {
+ env->sregs[SR_MSR] |= MSR_DZ;
+
+ if ((env->sregs[SR_MSR] & MSR_EE)
+ && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
+ env->sregs[SR_ESR] = ESR_EC_DIVZERO;
+ helper_raise_exception(env, EXCP_HW_EXCP);
+ }
+ return 0;
+ }
+ env->sregs[SR_MSR] &= ~MSR_DZ;
+ return 1;
+}
+
+uint32_t helper_divs(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ if (!div_prepare(env, a, b)) {
+ return 0;
+ }
+ return (int32_t)a / (int32_t)b;
+}
+
+uint32_t helper_divu(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ if (!div_prepare(env, a, b)) {
+ return 0;
+ }
+ return a / b;
+}
+
+/* raise FPU exception. */
+static void raise_fpu_exception(CPUMBState *env)
+{
+ env->sregs[SR_ESR] = ESR_EC_FPU;
+ helper_raise_exception(env, EXCP_HW_EXCP);
+}
+
+static void update_fpu_flags(CPUMBState *env, int flags)
+{
+ int raise = 0;
+
+ if (flags & float_flag_invalid) {
+ env->sregs[SR_FSR] |= FSR_IO;
+ raise = 1;
+ }
+ if (flags & float_flag_divbyzero) {
+ env->sregs[SR_FSR] |= FSR_DZ;
+ raise = 1;
+ }
+ if (flags & float_flag_overflow) {
+ env->sregs[SR_FSR] |= FSR_OF;
+ raise = 1;
+ }
+ if (flags & float_flag_underflow) {
+ env->sregs[SR_FSR] |= FSR_UF;
+ raise = 1;
+ }
+ if (raise
+ && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
+ && (env->sregs[SR_MSR] & MSR_EE)) {
+ raise_fpu_exception(env);
+ }
+}
+
+uint32_t helper_fadd(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fd, fa, fb;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fb.l = b;
+ fd.f = float32_add(fa.f, fb.f, &env->fp_status);
+
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags);
+ return fd.l;
+}
+
+uint32_t helper_frsub(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fd, fa, fb;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fb.l = b;
+ fd.f = float32_sub(fb.f, fa.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags);
+ return fd.l;
+}
+
+uint32_t helper_fmul(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fd, fa, fb;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fb.l = b;
+ fd.f = float32_mul(fa.f, fb.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags);
+
+ return fd.l;
+}
+
+uint32_t helper_fdiv(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fd, fa, fb;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fb.l = b;
+ fd.f = float32_div(fb.f, fa.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags);
+
+ return fd.l;
+}
+
+uint32_t helper_fcmp_un(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ uint32_t r = 0;
+
+ fa.l = a;
+ fb.l = b;
+
+ if (float32_is_signaling_nan(fa.f, &env->fp_status) ||
+ float32_is_signaling_nan(fb.f, &env->fp_status)) {
+ update_fpu_flags(env, float_flag_invalid);
+ r = 1;
+ }
+
+ if (float32_is_quiet_nan(fa.f, &env->fp_status) ||
+ float32_is_quiet_nan(fb.f, &env->fp_status)) {
+ r = 1;
+ }
+
+ return r;
+}
+
+uint32_t helper_fcmp_lt(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ int r;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fb.l = b;
+ r = float32_lt(fb.f, fa.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags & float_flag_invalid);
+
+ return r;
+}
+
+uint32_t helper_fcmp_eq(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ int flags;
+ int r;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fb.l = b;
+ r = float32_eq_quiet(fa.f, fb.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags & float_flag_invalid);
+
+ return r;
+}
+
+uint32_t helper_fcmp_le(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ int flags;
+ int r;
+
+ fa.l = a;
+ fb.l = b;
+ set_float_exception_flags(0, &env->fp_status);
+ r = float32_le(fa.f, fb.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags & float_flag_invalid);
+
+
+ return r;
+}
+
+uint32_t helper_fcmp_gt(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ int flags, r;
+
+ fa.l = a;
+ fb.l = b;
+ set_float_exception_flags(0, &env->fp_status);
+ r = float32_lt(fa.f, fb.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags & float_flag_invalid);
+ return r;
+}
+
+uint32_t helper_fcmp_ne(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ int flags, r;
+
+ fa.l = a;
+ fb.l = b;
+ set_float_exception_flags(0, &env->fp_status);
+ r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags & float_flag_invalid);
+
+ return r;
+}
+
+uint32_t helper_fcmp_ge(CPUMBState *env, uint32_t a, uint32_t b)
+{
+ CPU_FloatU fa, fb;
+ int flags, r;
+
+ fa.l = a;
+ fb.l = b;
+ set_float_exception_flags(0, &env->fp_status);
+ r = !float32_lt(fa.f, fb.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags & float_flag_invalid);
+
+ return r;
+}
+
+uint32_t helper_flt(CPUMBState *env, uint32_t a)
+{
+ CPU_FloatU fd, fa;
+
+ fa.l = a;
+ fd.f = int32_to_float32(fa.l, &env->fp_status);
+ return fd.l;
+}
+
+uint32_t helper_fint(CPUMBState *env, uint32_t a)
+{
+ CPU_FloatU fa;
+ uint32_t r;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ r = float32_to_int32(fa.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags);
+
+ return r;
+}
+
+uint32_t helper_fsqrt(CPUMBState *env, uint32_t a)
+{
+ CPU_FloatU fd, fa;
+ int flags;
+
+ set_float_exception_flags(0, &env->fp_status);
+ fa.l = a;
+ fd.l = float32_sqrt(fa.f, &env->fp_status);
+ flags = get_float_exception_flags(&env->fp_status);
+ update_fpu_flags(env, flags);
+
+ return fd.l;
+}
+
+uint32_t helper_pcmpbf(uint32_t a, uint32_t b)
+{
+ unsigned int i;
+ uint32_t mask = 0xff000000;
+
+ for (i = 0; i < 4; i++) {
+ if ((a & mask) == (b & mask))
+ return i + 1;
+ mask >>= 8;
+ }
+ return 0;
+}
+
+void helper_memalign(CPUMBState *env, uint32_t addr, uint32_t dr, uint32_t wr,
+ uint32_t mask)
+{
+ if (addr & mask) {
+ qemu_log_mask(CPU_LOG_INT,
+ "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
+ addr, mask, wr, dr);
+ env->sregs[SR_EAR] = addr;
+ env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \
+ | (dr & 31) << 5;
+ if (mask == 3) {
+ env->sregs[SR_ESR] |= 1 << 11;
+ }
+ if (!(env->sregs[SR_MSR] & MSR_EE)) {
+ return;
+ }
+ helper_raise_exception(env, EXCP_HW_EXCP);
+ }
+}
+
+void helper_stackprot(CPUMBState *env, uint32_t addr)
+{
+ if (addr < env->slr || addr > env->shr) {
+ qemu_log_mask(CPU_LOG_INT, "Stack protector violation at %x %x %x\n",
+ addr, env->slr, env->shr);
+ env->sregs[SR_EAR] = addr;
+ env->sregs[SR_ESR] = ESR_EC_STACKPROT;
+ helper_raise_exception(env, EXCP_HW_EXCP);
+ }
+}
+
+#if !defined(CONFIG_USER_ONLY)
+/* Writes/reads to the MMU's special regs end up here. */
+uint32_t helper_mmu_read(CPUMBState *env, uint32_t rn)
+{
+ return mmu_read(env, rn);
+}
+
+void helper_mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
+{
+ mmu_write(env, rn, v);
+}
+
+void mb_cpu_unassigned_access(CPUState *cs, hwaddr addr,
+ bool is_write, bool is_exec, int is_asi,
+ unsigned size)
+{
+ MicroBlazeCPU *cpu;
+ CPUMBState *env;
+
+ qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n",
+ addr, is_write ? 1 : 0, is_exec ? 1 : 0);
+ if (cs == NULL) {
+ return;
+ }
+ cpu = MICROBLAZE_CPU(cs);
+ env = &cpu->env;
+ if (!(env->sregs[SR_MSR] & MSR_EE)) {
+ return;
+ }
+
+ env->sregs[SR_EAR] = addr;
+ if (is_exec) {
+ if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) {
+ env->sregs[SR_ESR] = ESR_EC_INSN_BUS;
+ helper_raise_exception(env, EXCP_HW_EXCP);
+ }
+ } else {
+ if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) {
+ env->sregs[SR_ESR] = ESR_EC_DATA_BUS;
+ helper_raise_exception(env, EXCP_HW_EXCP);
+ }
+ }
+}
+#endif
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
new file mode 100644
index 0000000..de2090a
--- /dev/null
+++ b/target/microblaze/translate.c
@@ -0,0 +1,1872 @@
+/*
+ * Xilinx MicroBlaze emulation for qemu: main translation routines.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias.
+ * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "disas/disas.h"
+#include "exec/exec-all.h"
+#include "tcg-op.h"
+#include "exec/helper-proto.h"
+#include "microblaze-decode.h"
+#include "exec/cpu_ldst.h"
+#include "exec/helper-gen.h"
+
+#include "trace-tcg.h"
+#include "exec/log.h"
+
+
+#define SIM_COMPAT 0
+#define DISAS_GNU 1
+#define DISAS_MB 1
+#if DISAS_MB && !SIM_COMPAT
+# define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
+#else
+# define LOG_DIS(...) do { } while (0)
+#endif
+
+#define D(x)
+
+#define EXTRACT_FIELD(src, start, end) \
+ (((src) >> start) & ((1 << (end - start + 1)) - 1))
+
+static TCGv env_debug;
+static TCGv_env cpu_env;
+static TCGv cpu_R[32];
+static TCGv cpu_SR[18];
+static TCGv env_imm;
+static TCGv env_btaken;
+static TCGv env_btarget;
+static TCGv env_iflags;
+static TCGv env_res_addr;
+static TCGv env_res_val;
+
+#include "exec/gen-icount.h"
+
+/* This is the state at translation time. */
+typedef struct DisasContext {
+ MicroBlazeCPU *cpu;
+ target_ulong pc;
+
+ /* Decoder. */
+ int type_b;
+ uint32_t ir;
+ uint8_t opcode;
+ uint8_t rd, ra, rb;
+ uint16_t imm;
+
+ unsigned int cpustate_changed;
+ unsigned int delayed_branch;
+ unsigned int tb_flags, synced_flags; /* tb dependent flags. */
+ unsigned int clear_imm;
+ int is_jmp;
+
+#define JMP_NOJMP 0
+#define JMP_DIRECT 1
+#define JMP_DIRECT_CC 2
+#define JMP_INDIRECT 3
+ unsigned int jmp;
+ uint32_t jmp_pc;
+
+ int abort_at_next_insn;
+ int nr_nops;
+ struct TranslationBlock *tb;
+ int singlestep_enabled;
+} DisasContext;
+
+static const char *regnames[] =
+{
+ "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",
+};
+
+static const char *special_regnames[] =
+{
+ "rpc", "rmsr", "sr2", "sr3", "sr4", "sr5", "sr6", "sr7",
+ "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+ "sr16", "sr17", "sr18"
+};
+
+static inline void t_sync_flags(DisasContext *dc)
+{
+ /* Synch the tb dependent flags between translator and runtime. */
+ if (dc->tb_flags != dc->synced_flags) {
+ tcg_gen_movi_tl(env_iflags, dc->tb_flags);
+ dc->synced_flags = dc->tb_flags;
+ }
+}
+
+static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
+{
+ TCGv_i32 tmp = tcg_const_i32(index);
+
+ t_sync_flags(dc);
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
+ gen_helper_raise_exception(cpu_env, tmp);
+ tcg_temp_free_i32(tmp);
+ dc->is_jmp = DISAS_UPDATE;
+}
+
+static inline bool use_goto_tb(DisasContext *dc, target_ulong dest)
+{
+#ifndef CONFIG_USER_ONLY
+ return (dc->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
+#else
+ return true;
+#endif
+}
+
+static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
+{
+ if (use_goto_tb(dc, dest)) {
+ tcg_gen_goto_tb(n);
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dest);
+ tcg_gen_exit_tb((uintptr_t)dc->tb + n);
+ } else {
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dest);
+ tcg_gen_exit_tb(0);
+ }
+}
+
+static void read_carry(DisasContext *dc, TCGv d)
+{
+ tcg_gen_shri_tl(d, cpu_SR[SR_MSR], 31);
+}
+
+/*
+ * write_carry sets the carry bits in MSR based on bit 0 of v.
+ * v[31:1] are ignored.
+ */
+static void write_carry(DisasContext *dc, TCGv v)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_shli_tl(t0, v, 31);
+ tcg_gen_sari_tl(t0, t0, 31);
+ tcg_gen_andi_tl(t0, t0, (MSR_C | MSR_CC));
+ tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR],
+ ~(MSR_C | MSR_CC));
+ tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], t0);
+ tcg_temp_free(t0);
+}
+
+static void write_carryi(DisasContext *dc, bool carry)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_movi_tl(t0, carry);
+ write_carry(dc, t0);
+ tcg_temp_free(t0);
+}
+
+/* True if ALU operand b is a small immediate that may deserve
+ faster treatment. */
+static inline int dec_alu_op_b_is_small_imm(DisasContext *dc)
+{
+ /* Immediate insn without the imm prefix ? */
+ return dc->type_b && !(dc->tb_flags & IMM_FLAG);
+}
+
+static inline TCGv *dec_alu_op_b(DisasContext *dc)
+{
+ if (dc->type_b) {
+ if (dc->tb_flags & IMM_FLAG)
+ tcg_gen_ori_tl(env_imm, env_imm, dc->imm);
+ else
+ tcg_gen_movi_tl(env_imm, (int32_t)((int16_t)dc->imm));
+ return &env_imm;
+ } else
+ return &cpu_R[dc->rb];
+}
+
+static void dec_add(DisasContext *dc)
+{
+ unsigned int k, c;
+ TCGv cf;
+
+ k = dc->opcode & 4;
+ c = dc->opcode & 2;
+
+ LOG_DIS("add%s%s%s r%d r%d r%d\n",
+ dc->type_b ? "i" : "", k ? "k" : "", c ? "c" : "",
+ dc->rd, dc->ra, dc->rb);
+
+ /* Take care of the easy cases first. */
+ if (k) {
+ /* k - keep carry, no need to update MSR. */
+ /* If rd == r0, it's a nop. */
+ if (dc->rd) {
+ tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+
+ if (c) {
+ /* c - Add carry into the result. */
+ cf = tcg_temp_new();
+
+ read_carry(dc, cf);
+ tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
+ tcg_temp_free(cf);
+ }
+ }
+ return;
+ }
+
+ /* From now on, we can assume k is zero. So we need to update MSR. */
+ /* Extract carry. */
+ cf = tcg_temp_new();
+ if (c) {
+ read_carry(dc, cf);
+ } else {
+ tcg_gen_movi_tl(cf, 0);
+ }
+
+ if (dc->rd) {
+ TCGv ncf = tcg_temp_new();
+ gen_helper_carry(ncf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
+ tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+ tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
+ write_carry(dc, ncf);
+ tcg_temp_free(ncf);
+ } else {
+ gen_helper_carry(cf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
+ write_carry(dc, cf);
+ }
+ tcg_temp_free(cf);
+}
+
+static void dec_sub(DisasContext *dc)
+{
+ unsigned int u, cmp, k, c;
+ TCGv cf, na;
+
+ u = dc->imm & 2;
+ k = dc->opcode & 4;
+ c = dc->opcode & 2;
+ cmp = (dc->imm & 1) && (!dc->type_b) && k;
+
+ if (cmp) {
+ LOG_DIS("cmp%s r%d, r%d ir=%x\n", u ? "u" : "", dc->rd, dc->ra, dc->ir);
+ if (dc->rd) {
+ if (u)
+ gen_helper_cmpu(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ else
+ gen_helper_cmp(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ }
+ return;
+ }
+
+ LOG_DIS("sub%s%s r%d, r%d r%d\n",
+ k ? "k" : "", c ? "c" : "", dc->rd, dc->ra, dc->rb);
+
+ /* Take care of the easy cases first. */
+ if (k) {
+ /* k - keep carry, no need to update MSR. */
+ /* If rd == r0, it's a nop. */
+ if (dc->rd) {
+ tcg_gen_sub_tl(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
+
+ if (c) {
+ /* c - Add carry into the result. */
+ cf = tcg_temp_new();
+
+ read_carry(dc, cf);
+ tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
+ tcg_temp_free(cf);
+ }
+ }
+ return;
+ }
+
+ /* From now on, we can assume k is zero. So we need to update MSR. */
+ /* Extract carry. And complement a into na. */
+ cf = tcg_temp_new();
+ na = tcg_temp_new();
+ if (c) {
+ read_carry(dc, cf);
+ } else {
+ tcg_gen_movi_tl(cf, 1);
+ }
+
+ /* d = b + ~a + c. carry defaults to 1. */
+ tcg_gen_not_tl(na, cpu_R[dc->ra]);
+
+ if (dc->rd) {
+ TCGv ncf = tcg_temp_new();
+ gen_helper_carry(ncf, na, *(dec_alu_op_b(dc)), cf);
+ tcg_gen_add_tl(cpu_R[dc->rd], na, *(dec_alu_op_b(dc)));
+ tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
+ write_carry(dc, ncf);
+ tcg_temp_free(ncf);
+ } else {
+ gen_helper_carry(cf, na, *(dec_alu_op_b(dc)), cf);
+ write_carry(dc, cf);
+ }
+ tcg_temp_free(cf);
+ tcg_temp_free(na);
+}
+
+static void dec_pattern(DisasContext *dc)
+{
+ unsigned int mode;
+
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && !((dc->cpu->env.pvr.regs[2] & PVR2_USE_PCMP_INSTR))) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+
+ mode = dc->opcode & 3;
+ switch (mode) {
+ case 0:
+ /* pcmpbf. */
+ LOG_DIS("pcmpbf r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ if (dc->rd)
+ gen_helper_pcmpbf(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 2:
+ LOG_DIS("pcmpeq r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ if (dc->rd) {
+ tcg_gen_setcond_tl(TCG_COND_EQ, cpu_R[dc->rd],
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ }
+ break;
+ case 3:
+ LOG_DIS("pcmpne r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ if (dc->rd) {
+ tcg_gen_setcond_tl(TCG_COND_NE, cpu_R[dc->rd],
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ }
+ break;
+ default:
+ cpu_abort(CPU(dc->cpu),
+ "unsupported pattern insn opcode=%x\n", dc->opcode);
+ break;
+ }
+}
+
+static void dec_and(DisasContext *dc)
+{
+ unsigned int not;
+
+ if (!dc->type_b && (dc->imm & (1 << 10))) {
+ dec_pattern(dc);
+ return;
+ }
+
+ not = dc->opcode & (1 << 1);
+ LOG_DIS("and%s\n", not ? "n" : "");
+
+ if (!dc->rd)
+ return;
+
+ if (not) {
+ tcg_gen_andc_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+ } else
+ tcg_gen_and_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+}
+
+static void dec_or(DisasContext *dc)
+{
+ if (!dc->type_b && (dc->imm & (1 << 10))) {
+ dec_pattern(dc);
+ return;
+ }
+
+ LOG_DIS("or r%d r%d r%d imm=%x\n", dc->rd, dc->ra, dc->rb, dc->imm);
+ if (dc->rd)
+ tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+}
+
+static void dec_xor(DisasContext *dc)
+{
+ if (!dc->type_b && (dc->imm & (1 << 10))) {
+ dec_pattern(dc);
+ return;
+ }
+
+ LOG_DIS("xor r%d\n", dc->rd);
+ if (dc->rd)
+ tcg_gen_xor_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+}
+
+static inline void msr_read(DisasContext *dc, TCGv d)
+{
+ tcg_gen_mov_tl(d, cpu_SR[SR_MSR]);
+}
+
+static inline void msr_write(DisasContext *dc, TCGv v)
+{
+ TCGv t;
+
+ t = tcg_temp_new();
+ dc->cpustate_changed = 1;
+ /* PVR bit is not writable. */
+ tcg_gen_andi_tl(t, v, ~MSR_PVR);
+ tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], MSR_PVR);
+ tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], v);
+ tcg_temp_free(t);
+}
+
+static void dec_msr(DisasContext *dc)
+{
+ CPUState *cs = CPU(dc->cpu);
+ TCGv t0, t1;
+ unsigned int sr, to, rn;
+ int mem_index = cpu_mmu_index(&dc->cpu->env, false);
+
+ sr = dc->imm & ((1 << 14) - 1);
+ to = dc->imm & (1 << 14);
+ dc->type_b = 1;
+ if (to)
+ dc->cpustate_changed = 1;
+
+ /* msrclr and msrset. */
+ if (!(dc->imm & (1 << 15))) {
+ unsigned int clr = dc->ir & (1 << 16);
+
+ LOG_DIS("msr%s r%d imm=%x\n", clr ? "clr" : "set",
+ dc->rd, dc->imm);
+
+ if (!(dc->cpu->env.pvr.regs[2] & PVR2_USE_MSR_INSTR)) {
+ /* nop??? */
+ return;
+ }
+
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX && (dc->imm != 4 && dc->imm != 0)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ if (dc->rd)
+ msr_read(dc, cpu_R[dc->rd]);
+
+ t0 = tcg_temp_new();
+ t1 = tcg_temp_new();
+ msr_read(dc, t0);
+ tcg_gen_mov_tl(t1, *(dec_alu_op_b(dc)));
+
+ if (clr) {
+ tcg_gen_not_tl(t1, t1);
+ tcg_gen_and_tl(t0, t0, t1);
+ } else
+ tcg_gen_or_tl(t0, t0, t1);
+ msr_write(dc, t0);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4);
+ dc->is_jmp = DISAS_UPDATE;
+ return;
+ }
+
+ if (to) {
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+ }
+
+#if !defined(CONFIG_USER_ONLY)
+ /* Catch read/writes to the mmu block. */
+ if ((sr & ~0xff) == 0x1000) {
+ sr &= 7;
+ LOG_DIS("m%ss sr%d r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
+ if (to)
+ gen_helper_mmu_write(cpu_env, tcg_const_tl(sr), cpu_R[dc->ra]);
+ else
+ gen_helper_mmu_read(cpu_R[dc->rd], cpu_env, tcg_const_tl(sr));
+ return;
+ }
+#endif
+
+ if (to) {
+ LOG_DIS("m%ss sr%x r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
+ switch (sr) {
+ case 0:
+ break;
+ case 1:
+ msr_write(dc, cpu_R[dc->ra]);
+ break;
+ case 0x3:
+ tcg_gen_mov_tl(cpu_SR[SR_EAR], cpu_R[dc->ra]);
+ break;
+ case 0x5:
+ tcg_gen_mov_tl(cpu_SR[SR_ESR], cpu_R[dc->ra]);
+ break;
+ case 0x7:
+ tcg_gen_andi_tl(cpu_SR[SR_FSR], cpu_R[dc->ra], 31);
+ break;
+ case 0x800:
+ tcg_gen_st_tl(cpu_R[dc->ra], cpu_env, offsetof(CPUMBState, slr));
+ break;
+ case 0x802:
+ tcg_gen_st_tl(cpu_R[dc->ra], cpu_env, offsetof(CPUMBState, shr));
+ break;
+ default:
+ cpu_abort(CPU(dc->cpu), "unknown mts reg %x\n", sr);
+ break;
+ }
+ } else {
+ LOG_DIS("m%ss r%d sr%x imm=%x\n", to ? "t" : "f", dc->rd, sr, dc->imm);
+
+ switch (sr) {
+ case 0:
+ tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc);
+ break;
+ case 1:
+ msr_read(dc, cpu_R[dc->rd]);
+ break;
+ case 0x3:
+ tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_EAR]);
+ break;
+ case 0x5:
+ tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_ESR]);
+ break;
+ case 0x7:
+ tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_FSR]);
+ break;
+ case 0xb:
+ tcg_gen_mov_tl(cpu_R[dc->rd], cpu_SR[SR_BTR]);
+ break;
+ case 0x800:
+ tcg_gen_ld_tl(cpu_R[dc->rd], cpu_env, offsetof(CPUMBState, slr));
+ break;
+ case 0x802:
+ tcg_gen_ld_tl(cpu_R[dc->rd], cpu_env, offsetof(CPUMBState, shr));
+ break;
+ case 0x2000:
+ case 0x2001:
+ case 0x2002:
+ case 0x2003:
+ case 0x2004:
+ case 0x2005:
+ case 0x2006:
+ case 0x2007:
+ case 0x2008:
+ case 0x2009:
+ case 0x200a:
+ case 0x200b:
+ case 0x200c:
+ rn = sr & 0xf;
+ tcg_gen_ld_tl(cpu_R[dc->rd],
+ cpu_env, offsetof(CPUMBState, pvr.regs[rn]));
+ break;
+ default:
+ cpu_abort(cs, "unknown mfs reg %x\n", sr);
+ break;
+ }
+ }
+
+ if (dc->rd == 0) {
+ tcg_gen_movi_tl(cpu_R[0], 0);
+ }
+}
+
+/* Multiplier unit. */
+static void dec_mul(DisasContext *dc)
+{
+ TCGv tmp;
+ unsigned int subcode;
+
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && !(dc->cpu->env.pvr.regs[0] & PVR0_USE_HW_MUL_MASK)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ subcode = dc->imm & 3;
+
+ if (dc->type_b) {
+ LOG_DIS("muli r%d r%d %x\n", dc->rd, dc->ra, dc->imm);
+ tcg_gen_mul_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+ return;
+ }
+
+ /* mulh, mulhsu and mulhu are not available if C_USE_HW_MUL is < 2. */
+ if (subcode >= 1 && subcode <= 3
+ && !((dc->cpu->env.pvr.regs[2] & PVR2_USE_MUL64_MASK))) {
+ /* nop??? */
+ }
+
+ tmp = tcg_temp_new();
+ switch (subcode) {
+ case 0:
+ LOG_DIS("mul r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ tcg_gen_mul_tl(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 1:
+ LOG_DIS("mulh r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ tcg_gen_muls2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 2:
+ LOG_DIS("mulhsu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ tcg_gen_mulsu2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 3:
+ LOG_DIS("mulhu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
+ tcg_gen_mulu2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ default:
+ cpu_abort(CPU(dc->cpu), "unknown MUL insn %x\n", subcode);
+ break;
+ }
+ tcg_temp_free(tmp);
+}
+
+/* Div unit. */
+static void dec_div(DisasContext *dc)
+{
+ unsigned int u;
+
+ u = dc->imm & 2;
+ LOG_DIS("div\n");
+
+ if ((dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && !((dc->cpu->env.pvr.regs[0] & PVR0_USE_DIV_MASK))) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+
+ if (u)
+ gen_helper_divu(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)),
+ cpu_R[dc->ra]);
+ else
+ gen_helper_divs(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)),
+ cpu_R[dc->ra]);
+ if (!dc->rd)
+ tcg_gen_movi_tl(cpu_R[dc->rd], 0);
+}
+
+static void dec_barrel(DisasContext *dc)
+{
+ TCGv t0;
+ unsigned int s, t;
+
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && !(dc->cpu->env.pvr.regs[0] & PVR0_USE_BARREL_MASK)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ s = dc->imm & (1 << 10);
+ t = dc->imm & (1 << 9);
+
+ LOG_DIS("bs%s%s r%d r%d r%d\n",
+ s ? "l" : "r", t ? "a" : "l", dc->rd, dc->ra, dc->rb);
+
+ t0 = tcg_temp_new();
+
+ tcg_gen_mov_tl(t0, *(dec_alu_op_b(dc)));
+ tcg_gen_andi_tl(t0, t0, 31);
+
+ if (s)
+ tcg_gen_shl_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
+ else {
+ if (t)
+ tcg_gen_sar_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
+ else
+ tcg_gen_shr_tl(cpu_R[dc->rd], cpu_R[dc->ra], t0);
+ }
+}
+
+static void dec_bit(DisasContext *dc)
+{
+ CPUState *cs = CPU(dc->cpu);
+ TCGv t0;
+ unsigned int op;
+ int mem_index = cpu_mmu_index(&dc->cpu->env, false);
+
+ op = dc->ir & ((1 << 9) - 1);
+ switch (op) {
+ case 0x21:
+ /* src. */
+ t0 = tcg_temp_new();
+
+ LOG_DIS("src r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_andi_tl(t0, cpu_SR[SR_MSR], MSR_CC);
+ write_carry(dc, cpu_R[dc->ra]);
+ if (dc->rd) {
+ tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
+ tcg_gen_or_tl(cpu_R[dc->rd], cpu_R[dc->rd], t0);
+ }
+ tcg_temp_free(t0);
+ break;
+
+ case 0x1:
+ case 0x41:
+ /* srl. */
+ LOG_DIS("srl r%d r%d\n", dc->rd, dc->ra);
+
+ /* Update carry. Note that write carry only looks at the LSB. */
+ write_carry(dc, cpu_R[dc->ra]);
+ if (dc->rd) {
+ if (op == 0x41)
+ tcg_gen_shri_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
+ else
+ tcg_gen_sari_tl(cpu_R[dc->rd], cpu_R[dc->ra], 1);
+ }
+ break;
+ case 0x60:
+ LOG_DIS("ext8s r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_ext8s_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
+ break;
+ case 0x61:
+ LOG_DIS("ext16s r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_ext16s_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
+ break;
+ case 0x64:
+ case 0x66:
+ case 0x74:
+ case 0x76:
+ /* wdc. */
+ LOG_DIS("wdc r%d\n", dc->ra);
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+ break;
+ case 0x68:
+ /* wic. */
+ LOG_DIS("wic r%d\n", dc->ra);
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+ break;
+ case 0xe0:
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && !((dc->cpu->env.pvr.regs[2] & PVR2_USE_PCMP_INSTR))) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+ if (dc->cpu->env.pvr.regs[2] & PVR2_USE_PCMP_INSTR) {
+ gen_helper_clz(cpu_R[dc->rd], cpu_R[dc->ra]);
+ }
+ break;
+ case 0x1e0:
+ /* swapb */
+ LOG_DIS("swapb r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_bswap32_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
+ break;
+ case 0x1e2:
+ /*swaph */
+ LOG_DIS("swaph r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_rotri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 16);
+ break;
+ default:
+ cpu_abort(cs, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n",
+ dc->pc, op, dc->rd, dc->ra, dc->rb);
+ break;
+ }
+}
+
+static inline void sync_jmpstate(DisasContext *dc)
+{
+ if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
+ if (dc->jmp == JMP_DIRECT) {
+ tcg_gen_movi_tl(env_btaken, 1);
+ }
+ dc->jmp = JMP_INDIRECT;
+ tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
+ }
+}
+
+static void dec_imm(DisasContext *dc)
+{
+ LOG_DIS("imm %x\n", dc->imm << 16);
+ tcg_gen_movi_tl(env_imm, (dc->imm << 16));
+ dc->tb_flags |= IMM_FLAG;
+ dc->clear_imm = 0;
+}
+
+static inline TCGv *compute_ldst_addr(DisasContext *dc, TCGv *t)
+{
+ unsigned int extimm = dc->tb_flags & IMM_FLAG;
+ /* Should be set to one if r1 is used by loadstores. */
+ int stackprot = 0;
+
+ /* All load/stores use ra. */
+ if (dc->ra == 1 && dc->cpu->cfg.stackprot) {
+ stackprot = 1;
+ }
+
+ /* Treat the common cases first. */
+ if (!dc->type_b) {
+ /* If any of the regs is r0, return a ptr to the other. */
+ if (dc->ra == 0) {
+ return &cpu_R[dc->rb];
+ } else if (dc->rb == 0) {
+ return &cpu_R[dc->ra];
+ }
+
+ if (dc->rb == 1 && dc->cpu->cfg.stackprot) {
+ stackprot = 1;
+ }
+
+ *t = tcg_temp_new();
+ tcg_gen_add_tl(*t, cpu_R[dc->ra], cpu_R[dc->rb]);
+
+ if (stackprot) {
+ gen_helper_stackprot(cpu_env, *t);
+ }
+ return t;
+ }
+ /* Immediate. */
+ if (!extimm) {
+ if (dc->imm == 0) {
+ return &cpu_R[dc->ra];
+ }
+ *t = tcg_temp_new();
+ tcg_gen_movi_tl(*t, (int32_t)((int16_t)dc->imm));
+ tcg_gen_add_tl(*t, cpu_R[dc->ra], *t);
+ } else {
+ *t = tcg_temp_new();
+ tcg_gen_add_tl(*t, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+ }
+
+ if (stackprot) {
+ gen_helper_stackprot(cpu_env, *t);
+ }
+ return t;
+}
+
+static void dec_load(DisasContext *dc)
+{
+ TCGv t, v, *addr;
+ unsigned int size, rev = 0, ex = 0;
+ TCGMemOp mop;
+
+ mop = dc->opcode & 3;
+ size = 1 << mop;
+ if (!dc->type_b) {
+ rev = (dc->ir >> 9) & 1;
+ ex = (dc->ir >> 10) & 1;
+ }
+ mop |= MO_TE;
+ if (rev) {
+ mop ^= MO_BSWAP;
+ }
+
+ if (size > 4 && (dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ LOG_DIS("l%d%s%s%s\n", size, dc->type_b ? "i" : "", rev ? "r" : "",
+ ex ? "x" : "");
+
+ t_sync_flags(dc);
+ addr = compute_ldst_addr(dc, &t);
+
+ /*
+ * When doing reverse accesses we need to do two things.
+ *
+ * 1. Reverse the address wrt endianness.
+ * 2. Byteswap the data lanes on the way back into the CPU core.
+ */
+ if (rev && size != 4) {
+ /* Endian reverse the address. t is addr. */
+ switch (size) {
+ case 1:
+ {
+ /* 00 -> 11
+ 01 -> 10
+ 10 -> 10
+ 11 -> 00 */
+ TCGv low = tcg_temp_new();
+
+ /* Force addr into the temp. */
+ if (addr != &t) {
+ t = tcg_temp_new();
+ tcg_gen_mov_tl(t, *addr);
+ addr = &t;
+ }
+
+ tcg_gen_andi_tl(low, t, 3);
+ tcg_gen_sub_tl(low, tcg_const_tl(3), low);
+ tcg_gen_andi_tl(t, t, ~3);
+ tcg_gen_or_tl(t, t, low);
+ tcg_gen_mov_tl(env_imm, t);
+ tcg_temp_free(low);
+ break;
+ }
+
+ case 2:
+ /* 00 -> 10
+ 10 -> 00. */
+ /* Force addr into the temp. */
+ if (addr != &t) {
+ t = tcg_temp_new();
+ tcg_gen_xori_tl(t, *addr, 2);
+ addr = &t;
+ } else {
+ tcg_gen_xori_tl(t, t, 2);
+ }
+ break;
+ default:
+ cpu_abort(CPU(dc->cpu), "Invalid reverse size\n");
+ break;
+ }
+ }
+
+ /* lwx does not throw unaligned access errors, so force alignment */
+ if (ex) {
+ /* Force addr into the temp. */
+ if (addr != &t) {
+ t = tcg_temp_new();
+ tcg_gen_mov_tl(t, *addr);
+ addr = &t;
+ }
+ tcg_gen_andi_tl(t, t, ~3);
+ }
+
+ /* If we get a fault on a dslot, the jmpstate better be in sync. */
+ sync_jmpstate(dc);
+
+ /* Verify alignment if needed. */
+ /*
+ * Microblaze gives MMU faults priority over faults due to
+ * unaligned addresses. That's why we speculatively do the load
+ * into v. If the load succeeds, we verify alignment of the
+ * address and if that succeeds we write into the destination reg.
+ */
+ v = tcg_temp_new();
+ tcg_gen_qemu_ld_tl(v, *addr, cpu_mmu_index(&dc->cpu->env, false), mop);
+
+ if ((dc->cpu->env.pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) {
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
+ gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd),
+ tcg_const_tl(0), tcg_const_tl(size - 1));
+ }
+
+ if (ex) {
+ tcg_gen_mov_tl(env_res_addr, *addr);
+ tcg_gen_mov_tl(env_res_val, v);
+ }
+ if (dc->rd) {
+ tcg_gen_mov_tl(cpu_R[dc->rd], v);
+ }
+ tcg_temp_free(v);
+
+ if (ex) { /* lwx */
+ /* no support for AXI exclusive so always clear C */
+ write_carryi(dc, 0);
+ }
+
+ if (addr == &t)
+ tcg_temp_free(t);
+}
+
+static void dec_store(DisasContext *dc)
+{
+ TCGv t, *addr, swx_addr;
+ TCGLabel *swx_skip = NULL;
+ unsigned int size, rev = 0, ex = 0;
+ TCGMemOp mop;
+
+ mop = dc->opcode & 3;
+ size = 1 << mop;
+ if (!dc->type_b) {
+ rev = (dc->ir >> 9) & 1;
+ ex = (dc->ir >> 10) & 1;
+ }
+ mop |= MO_TE;
+ if (rev) {
+ mop ^= MO_BSWAP;
+ }
+
+ if (size > 4 && (dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ LOG_DIS("s%d%s%s%s\n", size, dc->type_b ? "i" : "", rev ? "r" : "",
+ ex ? "x" : "");
+ t_sync_flags(dc);
+ /* If we get a fault on a dslot, the jmpstate better be in sync. */
+ sync_jmpstate(dc);
+ addr = compute_ldst_addr(dc, &t);
+
+ swx_addr = tcg_temp_local_new();
+ if (ex) { /* swx */
+ TCGv tval;
+
+ /* Force addr into the swx_addr. */
+ tcg_gen_mov_tl(swx_addr, *addr);
+ addr = &swx_addr;
+ /* swx does not throw unaligned access errors, so force alignment */
+ tcg_gen_andi_tl(swx_addr, swx_addr, ~3);
+
+ write_carryi(dc, 1);
+ swx_skip = gen_new_label();
+ tcg_gen_brcond_tl(TCG_COND_NE, env_res_addr, swx_addr, swx_skip);
+
+ /* Compare the value loaded at lwx with current contents of
+ the reserved location.
+ FIXME: This only works for system emulation where we can expect
+ this compare and the following write to be atomic. For user
+ emulation we need to add atomicity between threads. */
+ tval = tcg_temp_new();
+ tcg_gen_qemu_ld_tl(tval, swx_addr, cpu_mmu_index(&dc->cpu->env, false),
+ MO_TEUL);
+ tcg_gen_brcond_tl(TCG_COND_NE, env_res_val, tval, swx_skip);
+ write_carryi(dc, 0);
+ tcg_temp_free(tval);
+ }
+
+ if (rev && size != 4) {
+ /* Endian reverse the address. t is addr. */
+ switch (size) {
+ case 1:
+ {
+ /* 00 -> 11
+ 01 -> 10
+ 10 -> 10
+ 11 -> 00 */
+ TCGv low = tcg_temp_new();
+
+ /* Force addr into the temp. */
+ if (addr != &t) {
+ t = tcg_temp_new();
+ tcg_gen_mov_tl(t, *addr);
+ addr = &t;
+ }
+
+ tcg_gen_andi_tl(low, t, 3);
+ tcg_gen_sub_tl(low, tcg_const_tl(3), low);
+ tcg_gen_andi_tl(t, t, ~3);
+ tcg_gen_or_tl(t, t, low);
+ tcg_gen_mov_tl(env_imm, t);
+ tcg_temp_free(low);
+ break;
+ }
+
+ case 2:
+ /* 00 -> 10
+ 10 -> 00. */
+ /* Force addr into the temp. */
+ if (addr != &t) {
+ t = tcg_temp_new();
+ tcg_gen_xori_tl(t, *addr, 2);
+ addr = &t;
+ } else {
+ tcg_gen_xori_tl(t, t, 2);
+ }
+ break;
+ default:
+ cpu_abort(CPU(dc->cpu), "Invalid reverse size\n");
+ break;
+ }
+ }
+ tcg_gen_qemu_st_tl(cpu_R[dc->rd], *addr, cpu_mmu_index(&dc->cpu->env, false), mop);
+
+ /* Verify alignment if needed. */
+ if ((dc->cpu->env.pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) {
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
+ /* FIXME: if the alignment is wrong, we should restore the value
+ * in memory. One possible way to achieve this is to probe
+ * the MMU prior to the memaccess, thay way we could put
+ * the alignment checks in between the probe and the mem
+ * access.
+ */
+ gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd),
+ tcg_const_tl(1), tcg_const_tl(size - 1));
+ }
+
+ if (ex) {
+ gen_set_label(swx_skip);
+ }
+ tcg_temp_free(swx_addr);
+
+ if (addr == &t)
+ tcg_temp_free(t);
+}
+
+static inline void eval_cc(DisasContext *dc, unsigned int cc,
+ TCGv d, TCGv a, TCGv b)
+{
+ switch (cc) {
+ case CC_EQ:
+ tcg_gen_setcond_tl(TCG_COND_EQ, d, a, b);
+ break;
+ case CC_NE:
+ tcg_gen_setcond_tl(TCG_COND_NE, d, a, b);
+ break;
+ case CC_LT:
+ tcg_gen_setcond_tl(TCG_COND_LT, d, a, b);
+ break;
+ case CC_LE:
+ tcg_gen_setcond_tl(TCG_COND_LE, d, a, b);
+ break;
+ case CC_GE:
+ tcg_gen_setcond_tl(TCG_COND_GE, d, a, b);
+ break;
+ case CC_GT:
+ tcg_gen_setcond_tl(TCG_COND_GT, d, a, b);
+ break;
+ default:
+ cpu_abort(CPU(dc->cpu), "Unknown condition code %x.\n", cc);
+ break;
+ }
+}
+
+static void eval_cond_jmp(DisasContext *dc, TCGv pc_true, TCGv pc_false)
+{
+ TCGLabel *l1 = gen_new_label();
+ /* Conditional jmp. */
+ tcg_gen_mov_tl(cpu_SR[SR_PC], pc_false);
+ tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
+ tcg_gen_mov_tl(cpu_SR[SR_PC], pc_true);
+ gen_set_label(l1);
+}
+
+static void dec_bcc(DisasContext *dc)
+{
+ unsigned int cc;
+ unsigned int dslot;
+
+ cc = EXTRACT_FIELD(dc->ir, 21, 23);
+ dslot = dc->ir & (1 << 25);
+ LOG_DIS("bcc%s r%d %x\n", dslot ? "d" : "", dc->ra, dc->imm);
+
+ dc->delayed_branch = 1;
+ if (dslot) {
+ dc->delayed_branch = 2;
+ dc->tb_flags |= D_FLAG;
+ tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
+ cpu_env, offsetof(CPUMBState, bimm));
+ }
+
+ if (dec_alu_op_b_is_small_imm(dc)) {
+ int32_t offset = (int32_t)((int16_t)dc->imm); /* sign-extend. */
+
+ tcg_gen_movi_tl(env_btarget, dc->pc + offset);
+ dc->jmp = JMP_DIRECT_CC;
+ dc->jmp_pc = dc->pc + offset;
+ } else {
+ dc->jmp = JMP_INDIRECT;
+ tcg_gen_movi_tl(env_btarget, dc->pc);
+ tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
+ }
+ eval_cc(dc, cc, env_btaken, cpu_R[dc->ra], tcg_const_tl(0));
+}
+
+static void dec_br(DisasContext *dc)
+{
+ unsigned int dslot, link, abs, mbar;
+ int mem_index = cpu_mmu_index(&dc->cpu->env, false);
+
+ dslot = dc->ir & (1 << 20);
+ abs = dc->ir & (1 << 19);
+ link = dc->ir & (1 << 18);
+
+ /* Memory barrier. */
+ mbar = (dc->ir >> 16) & 31;
+ if (mbar == 2 && dc->imm == 4) {
+ /* mbar IMM & 16 decodes to sleep. */
+ if (dc->rd & 16) {
+ TCGv_i32 tmp_hlt = tcg_const_i32(EXCP_HLT);
+ TCGv_i32 tmp_1 = tcg_const_i32(1);
+
+ LOG_DIS("sleep\n");
+
+ t_sync_flags(dc);
+ tcg_gen_st_i32(tmp_1, cpu_env,
+ -offsetof(MicroBlazeCPU, env)
+ +offsetof(CPUState, halted));
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4);
+ gen_helper_raise_exception(cpu_env, tmp_hlt);
+ tcg_temp_free_i32(tmp_hlt);
+ tcg_temp_free_i32(tmp_1);
+ return;
+ }
+ LOG_DIS("mbar %d\n", dc->rd);
+ /* Break the TB. */
+ dc->cpustate_changed = 1;
+ return;
+ }
+
+ LOG_DIS("br%s%s%s%s imm=%x\n",
+ abs ? "a" : "", link ? "l" : "",
+ dc->type_b ? "i" : "", dslot ? "d" : "",
+ dc->imm);
+
+ dc->delayed_branch = 1;
+ if (dslot) {
+ dc->delayed_branch = 2;
+ dc->tb_flags |= D_FLAG;
+ tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
+ cpu_env, offsetof(CPUMBState, bimm));
+ }
+ if (link && dc->rd)
+ tcg_gen_movi_tl(cpu_R[dc->rd], dc->pc);
+
+ dc->jmp = JMP_INDIRECT;
+ if (abs) {
+ tcg_gen_movi_tl(env_btaken, 1);
+ tcg_gen_mov_tl(env_btarget, *(dec_alu_op_b(dc)));
+ if (link && !dslot) {
+ if (!(dc->tb_flags & IMM_FLAG) && (dc->imm == 8 || dc->imm == 0x18))
+ t_gen_raise_exception(dc, EXCP_BREAK);
+ if (dc->imm == 0) {
+ if ((dc->tb_flags & MSR_EE_FLAG) && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ t_gen_raise_exception(dc, EXCP_DEBUG);
+ }
+ }
+ } else {
+ if (dec_alu_op_b_is_small_imm(dc)) {
+ dc->jmp = JMP_DIRECT;
+ dc->jmp_pc = dc->pc + (int32_t)((int16_t)dc->imm);
+ } else {
+ tcg_gen_movi_tl(env_btaken, 1);
+ tcg_gen_movi_tl(env_btarget, dc->pc);
+ tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
+ }
+ }
+}
+
+static inline void do_rti(DisasContext *dc)
+{
+ TCGv t0, t1;
+ t0 = tcg_temp_new();
+ t1 = tcg_temp_new();
+ tcg_gen_shri_tl(t0, cpu_SR[SR_MSR], 1);
+ tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_IE);
+ tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
+
+ tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
+ tcg_gen_or_tl(t1, t1, t0);
+ msr_write(dc, t1);
+ tcg_temp_free(t1);
+ tcg_temp_free(t0);
+ dc->tb_flags &= ~DRTI_FLAG;
+}
+
+static inline void do_rtb(DisasContext *dc)
+{
+ TCGv t0, t1;
+ t0 = tcg_temp_new();
+ t1 = tcg_temp_new();
+ tcg_gen_andi_tl(t1, cpu_SR[SR_MSR], ~MSR_BIP);
+ tcg_gen_shri_tl(t0, t1, 1);
+ tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
+
+ tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
+ tcg_gen_or_tl(t1, t1, t0);
+ msr_write(dc, t1);
+ tcg_temp_free(t1);
+ tcg_temp_free(t0);
+ dc->tb_flags &= ~DRTB_FLAG;
+}
+
+static inline void do_rte(DisasContext *dc)
+{
+ TCGv t0, t1;
+ t0 = tcg_temp_new();
+ t1 = tcg_temp_new();
+
+ tcg_gen_ori_tl(t1, cpu_SR[SR_MSR], MSR_EE);
+ tcg_gen_andi_tl(t1, t1, ~MSR_EIP);
+ tcg_gen_shri_tl(t0, t1, 1);
+ tcg_gen_andi_tl(t0, t0, (MSR_VM | MSR_UM));
+
+ tcg_gen_andi_tl(t1, t1, ~(MSR_VM | MSR_UM));
+ tcg_gen_or_tl(t1, t1, t0);
+ msr_write(dc, t1);
+ tcg_temp_free(t1);
+ tcg_temp_free(t0);
+ dc->tb_flags &= ~DRTE_FLAG;
+}
+
+static void dec_rts(DisasContext *dc)
+{
+ unsigned int b_bit, i_bit, e_bit;
+ int mem_index = cpu_mmu_index(&dc->cpu->env, false);
+
+ i_bit = dc->ir & (1 << 21);
+ b_bit = dc->ir & (1 << 22);
+ e_bit = dc->ir & (1 << 23);
+
+ dc->delayed_branch = 2;
+ dc->tb_flags |= D_FLAG;
+ tcg_gen_st_tl(tcg_const_tl(dc->type_b && (dc->tb_flags & IMM_FLAG)),
+ cpu_env, offsetof(CPUMBState, bimm));
+
+ if (i_bit) {
+ LOG_DIS("rtid ir=%x\n", dc->ir);
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+ dc->tb_flags |= DRTI_FLAG;
+ } else if (b_bit) {
+ LOG_DIS("rtbd ir=%x\n", dc->ir);
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+ dc->tb_flags |= DRTB_FLAG;
+ } else if (e_bit) {
+ LOG_DIS("rted ir=%x\n", dc->ir);
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && mem_index == MMU_USER_IDX) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+ dc->tb_flags |= DRTE_FLAG;
+ } else
+ LOG_DIS("rts ir=%x\n", dc->ir);
+
+ dc->jmp = JMP_INDIRECT;
+ tcg_gen_movi_tl(env_btaken, 1);
+ tcg_gen_add_tl(env_btarget, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+}
+
+static int dec_check_fpuv2(DisasContext *dc)
+{
+ if ((dc->cpu->cfg.use_fpu != 2) && (dc->tb_flags & MSR_EE_FLAG)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_FPU);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ }
+ return (dc->cpu->cfg.use_fpu == 2) ? 0 : PVR2_USE_FPU2_MASK;
+}
+
+static void dec_fpu(DisasContext *dc)
+{
+ unsigned int fpu_insn;
+
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && (dc->cpu->cfg.use_fpu != 1)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ fpu_insn = (dc->ir >> 7) & 7;
+
+ switch (fpu_insn) {
+ case 0:
+ gen_helper_fadd(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
+ cpu_R[dc->rb]);
+ break;
+
+ case 1:
+ gen_helper_frsub(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
+ cpu_R[dc->rb]);
+ break;
+
+ case 2:
+ gen_helper_fmul(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
+ cpu_R[dc->rb]);
+ break;
+
+ case 3:
+ gen_helper_fdiv(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
+ cpu_R[dc->rb]);
+ break;
+
+ case 4:
+ switch ((dc->ir >> 4) & 7) {
+ case 0:
+ gen_helper_fcmp_un(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 1:
+ gen_helper_fcmp_lt(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 2:
+ gen_helper_fcmp_eq(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 3:
+ gen_helper_fcmp_le(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 4:
+ gen_helper_fcmp_gt(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 5:
+ gen_helper_fcmp_ne(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ case 6:
+ gen_helper_fcmp_ge(cpu_R[dc->rd], cpu_env,
+ cpu_R[dc->ra], cpu_R[dc->rb]);
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP,
+ "unimplemented fcmp fpu_insn=%x pc=%x"
+ " opc=%x\n",
+ fpu_insn, dc->pc, dc->opcode);
+ dc->abort_at_next_insn = 1;
+ break;
+ }
+ break;
+
+ case 5:
+ if (!dec_check_fpuv2(dc)) {
+ return;
+ }
+ gen_helper_flt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
+ break;
+
+ case 6:
+ if (!dec_check_fpuv2(dc)) {
+ return;
+ }
+ gen_helper_fint(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
+ break;
+
+ case 7:
+ if (!dec_check_fpuv2(dc)) {
+ return;
+ }
+ gen_helper_fsqrt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
+ break;
+
+ default:
+ qemu_log_mask(LOG_UNIMP, "unimplemented FPU insn fpu_insn=%x pc=%x"
+ " opc=%x\n",
+ fpu_insn, dc->pc, dc->opcode);
+ dc->abort_at_next_insn = 1;
+ break;
+ }
+}
+
+static void dec_null(DisasContext *dc)
+{
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+ qemu_log_mask(LOG_GUEST_ERROR, "unknown insn pc=%x opc=%x\n", dc->pc, dc->opcode);
+ dc->abort_at_next_insn = 1;
+}
+
+/* Insns connected to FSL or AXI stream attached devices. */
+static void dec_stream(DisasContext *dc)
+{
+ int mem_index = cpu_mmu_index(&dc->cpu->env, false);
+ TCGv_i32 t_id, t_ctrl;
+ int ctrl;
+
+ LOG_DIS("%s%s imm=%x\n", dc->rd ? "get" : "put",
+ dc->type_b ? "" : "d", dc->imm);
+
+ if ((dc->tb_flags & MSR_EE_FLAG) && (mem_index == MMU_USER_IDX)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_PRIVINSN);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ t_id = tcg_temp_new();
+ if (dc->type_b) {
+ tcg_gen_movi_tl(t_id, dc->imm & 0xf);
+ ctrl = dc->imm >> 10;
+ } else {
+ tcg_gen_andi_tl(t_id, cpu_R[dc->rb], 0xf);
+ ctrl = dc->imm >> 5;
+ }
+
+ t_ctrl = tcg_const_tl(ctrl);
+
+ if (dc->rd == 0) {
+ gen_helper_put(t_id, t_ctrl, cpu_R[dc->ra]);
+ } else {
+ gen_helper_get(cpu_R[dc->rd], t_id, t_ctrl);
+ }
+ tcg_temp_free(t_id);
+ tcg_temp_free(t_ctrl);
+}
+
+static struct decoder_info {
+ struct {
+ uint32_t bits;
+ uint32_t mask;
+ };
+ void (*dec)(DisasContext *dc);
+} decinfo[] = {
+ {DEC_ADD, dec_add},
+ {DEC_SUB, dec_sub},
+ {DEC_AND, dec_and},
+ {DEC_XOR, dec_xor},
+ {DEC_OR, dec_or},
+ {DEC_BIT, dec_bit},
+ {DEC_BARREL, dec_barrel},
+ {DEC_LD, dec_load},
+ {DEC_ST, dec_store},
+ {DEC_IMM, dec_imm},
+ {DEC_BR, dec_br},
+ {DEC_BCC, dec_bcc},
+ {DEC_RTS, dec_rts},
+ {DEC_FPU, dec_fpu},
+ {DEC_MUL, dec_mul},
+ {DEC_DIV, dec_div},
+ {DEC_MSR, dec_msr},
+ {DEC_STREAM, dec_stream},
+ {{0, 0}, dec_null}
+};
+
+static inline void decode(DisasContext *dc, uint32_t ir)
+{
+ int i;
+
+ dc->ir = ir;
+ LOG_DIS("%8.8x\t", dc->ir);
+
+ if (dc->ir)
+ dc->nr_nops = 0;
+ else {
+ if ((dc->tb_flags & MSR_EE_FLAG)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
+ && (dc->cpu->env.pvr.regs[2] & PVR2_OPCODE_0x0_ILL_MASK)) {
+ tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+ t_gen_raise_exception(dc, EXCP_HW_EXCP);
+ return;
+ }
+
+ LOG_DIS("nr_nops=%d\t", dc->nr_nops);
+ dc->nr_nops++;
+ if (dc->nr_nops > 4) {
+ cpu_abort(CPU(dc->cpu), "fetching nop sequence\n");
+ }
+ }
+ /* bit 2 seems to indicate insn type. */
+ dc->type_b = ir & (1 << 29);
+
+ dc->opcode = EXTRACT_FIELD(ir, 26, 31);
+ dc->rd = EXTRACT_FIELD(ir, 21, 25);
+ dc->ra = EXTRACT_FIELD(ir, 16, 20);
+ dc->rb = EXTRACT_FIELD(ir, 11, 15);
+ dc->imm = EXTRACT_FIELD(ir, 0, 15);
+
+ /* Large switch for all insns. */
+ for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
+ if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
+ decinfo[i].dec(dc);
+ break;
+ }
+ }
+}
+
+/* generate intermediate code for basic block 'tb'. */
+void gen_intermediate_code(CPUMBState *env, struct TranslationBlock *tb)
+{
+ MicroBlazeCPU *cpu = mb_env_get_cpu(env);
+ CPUState *cs = CPU(cpu);
+ uint32_t pc_start;
+ struct DisasContext ctx;
+ struct DisasContext *dc = &ctx;
+ uint32_t next_page_start, org_flags;
+ target_ulong npc;
+ int num_insns;
+ int max_insns;
+
+ pc_start = tb->pc;
+ dc->cpu = cpu;
+ dc->tb = tb;
+ org_flags = dc->synced_flags = dc->tb_flags = tb->flags;
+
+ dc->is_jmp = DISAS_NEXT;
+ dc->jmp = 0;
+ dc->delayed_branch = !!(dc->tb_flags & D_FLAG);
+ if (dc->delayed_branch) {
+ dc->jmp = JMP_INDIRECT;
+ }
+ dc->pc = pc_start;
+ dc->singlestep_enabled = cs->singlestep_enabled;
+ dc->cpustate_changed = 0;
+ dc->abort_at_next_insn = 0;
+ dc->nr_nops = 0;
+
+ if (pc_start & 3) {
+ cpu_abort(cs, "Microblaze: unaligned PC=%x\n", pc_start);
+ }
+
+ next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
+ num_insns = 0;
+ max_insns = tb->cflags & CF_COUNT_MASK;
+ if (max_insns == 0) {
+ max_insns = CF_COUNT_MASK;
+ }
+ if (max_insns > TCG_MAX_INSNS) {
+ max_insns = TCG_MAX_INSNS;
+ }
+
+ gen_tb_start(tb);
+ do
+ {
+ tcg_gen_insn_start(dc->pc);
+ num_insns++;
+
+#if SIM_COMPAT
+ if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+ tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
+ gen_helper_debug();
+ }
+#endif
+
+ if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
+ t_gen_raise_exception(dc, EXCP_DEBUG);
+ dc->is_jmp = DISAS_UPDATE;
+ /* The address covered by the breakpoint must be included in
+ [tb->pc, tb->pc + tb->size) in order to for it to be
+ properly cleared -- thus we increment the PC here so that
+ the logic setting tb->size below does the right thing. */
+ dc->pc += 4;
+ break;
+ }
+
+ /* Pretty disas. */
+ LOG_DIS("%8.8x:\t", dc->pc);
+
+ if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
+ gen_io_start();
+ }
+
+ dc->clear_imm = 1;
+ decode(dc, cpu_ldl_code(env, dc->pc));
+ if (dc->clear_imm)
+ dc->tb_flags &= ~IMM_FLAG;
+ dc->pc += 4;
+
+ if (dc->delayed_branch) {
+ dc->delayed_branch--;
+ if (!dc->delayed_branch) {
+ if (dc->tb_flags & DRTI_FLAG)
+ do_rti(dc);
+ if (dc->tb_flags & DRTB_FLAG)
+ do_rtb(dc);
+ if (dc->tb_flags & DRTE_FLAG)
+ do_rte(dc);
+ /* Clear the delay slot flag. */
+ dc->tb_flags &= ~D_FLAG;
+ /* If it is a direct jump, try direct chaining. */
+ if (dc->jmp == JMP_INDIRECT) {
+ eval_cond_jmp(dc, env_btarget, tcg_const_tl(dc->pc));
+ dc->is_jmp = DISAS_JUMP;
+ } else if (dc->jmp == JMP_DIRECT) {
+ t_sync_flags(dc);
+ gen_goto_tb(dc, 0, dc->jmp_pc);
+ dc->is_jmp = DISAS_TB_JUMP;
+ } else if (dc->jmp == JMP_DIRECT_CC) {
+ TCGLabel *l1 = gen_new_label();
+ t_sync_flags(dc);
+ /* Conditional jmp. */
+ tcg_gen_brcondi_tl(TCG_COND_NE, env_btaken, 0, l1);
+ gen_goto_tb(dc, 1, dc->pc);
+ gen_set_label(l1);
+ gen_goto_tb(dc, 0, dc->jmp_pc);
+
+ dc->is_jmp = DISAS_TB_JUMP;
+ }
+ break;
+ }
+ }
+ if (cs->singlestep_enabled) {
+ break;
+ }
+ } while (!dc->is_jmp && !dc->cpustate_changed
+ && !tcg_op_buf_full()
+ && !singlestep
+ && (dc->pc < next_page_start)
+ && num_insns < max_insns);
+
+ npc = dc->pc;
+ if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
+ if (dc->tb_flags & D_FLAG) {
+ dc->is_jmp = DISAS_UPDATE;
+ tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
+ sync_jmpstate(dc);
+ } else
+ npc = dc->jmp_pc;
+ }
+
+ if (tb->cflags & CF_LAST_IO)
+ gen_io_end();
+ /* Force an update if the per-tb cpu state has changed. */
+ if (dc->is_jmp == DISAS_NEXT
+ && (dc->cpustate_changed || org_flags != dc->tb_flags)) {
+ dc->is_jmp = DISAS_UPDATE;
+ tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
+ }
+ t_sync_flags(dc);
+
+ if (unlikely(cs->singlestep_enabled)) {
+ TCGv_i32 tmp = tcg_const_i32(EXCP_DEBUG);
+
+ if (dc->is_jmp != DISAS_JUMP) {
+ tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
+ }
+ gen_helper_raise_exception(cpu_env, tmp);
+ tcg_temp_free_i32(tmp);
+ } else {
+ switch(dc->is_jmp) {
+ case DISAS_NEXT:
+ gen_goto_tb(dc, 1, npc);
+ break;
+ default:
+ case DISAS_JUMP:
+ case DISAS_UPDATE:
+ /* indicate that the hash table must be used
+ to find the next TB */
+ tcg_gen_exit_tb(0);
+ break;
+ case DISAS_TB_JUMP:
+ /* nothing more to generate */
+ break;
+ }
+ }
+ gen_tb_end(tb, num_insns);
+
+ tb->size = dc->pc - pc_start;
+ tb->icount = num_insns;
+
+#ifdef DEBUG_DISAS
+#if !SIM_COMPAT
+ if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
+ && qemu_log_in_addr_range(pc_start)) {
+ qemu_log_lock();
+ qemu_log("--------------\n");
+#if DISAS_GNU
+ log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
+#endif
+ qemu_log("\nisize=%d osize=%d\n",
+ dc->pc - pc_start, tcg_op_buf_count());
+ qemu_log_unlock();
+ }
+#endif
+#endif
+ assert(!dc->abort_at_next_insn);
+}
+
+void mb_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
+ int flags)
+{
+ MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+ CPUMBState *env = &cpu->env;
+ int i;
+
+ if (!env || !f)
+ return;
+
+ cpu_fprintf(f, "IN: PC=%x %s\n",
+ env->sregs[SR_PC], lookup_symbol(env->sregs[SR_PC]));
+ cpu_fprintf(f, "rmsr=%x resr=%x rear=%x debug=%x imm=%x iflags=%x fsr=%x\n",
+ env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
+ env->debug, env->imm, env->iflags, env->sregs[SR_FSR]);
+ cpu_fprintf(f, "btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
+ env->btaken, env->btarget,
+ (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
+ (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",
+ (env->sregs[SR_MSR] & MSR_EIP),
+ (env->sregs[SR_MSR] & MSR_IE));
+
+ for (i = 0; i < 32; i++) {
+ cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
+ if ((i + 1) % 4 == 0)
+ cpu_fprintf(f, "\n");
+ }
+ cpu_fprintf(f, "\n\n");
+}
+
+MicroBlazeCPU *cpu_mb_init(const char *cpu_model)
+{
+ MicroBlazeCPU *cpu;
+
+ cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
+
+ object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
+
+ return cpu;
+}
+
+void mb_tcg_init(void)
+{
+ int i;
+
+ cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+ tcg_ctx.tcg_env = cpu_env;
+
+ env_debug = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, debug),
+ "debug0");
+ env_iflags = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, iflags),
+ "iflags");
+ env_imm = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, imm),
+ "imm");
+ env_btarget = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, btarget),
+ "btarget");
+ env_btaken = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, btaken),
+ "btaken");
+ env_res_addr = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, res_addr),
+ "res_addr");
+ env_res_val = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, res_val),
+ "res_val");
+ for (i = 0; i < ARRAY_SIZE(cpu_R); i++) {
+ cpu_R[i] = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, regs[i]),
+ regnames[i]);
+ }
+ for (i = 0; i < ARRAY_SIZE(cpu_SR); i++) {
+ cpu_SR[i] = tcg_global_mem_new(cpu_env,
+ offsetof(CPUMBState, sregs[i]),
+ special_regnames[i]);
+ }
+}
+
+void restore_state_to_opc(CPUMBState *env, TranslationBlock *tb,
+ target_ulong *data)
+{
+ env->sregs[SR_PC] = data[0];
+}
generated by cgit v1.1 at 2024-12-28 16:09:31 +0000