target/loongarch: Add common source file for CSR register

Common source file csr.c is added here, it can be used by both
TCG mode and kvm mode. The common code is removed from file
tcg/insn_trans/trans_privileged.c.inc to csrc.c

Signed-off-by: Bibo Mao <maobibo@loongson.cn>

4 files changed, 116 insertions, 107 deletions

diff --git a/target/loongarch/csr.c b/target/loongarch/csr.c
new file mode 100644
index 0000000..62c1815
--- /dev/null
+++ b/target/loongarch/csr.c
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2025 Loongson Technology Corporation Limited
+ */
+#include <stddef.h>
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "csr.h"
+
+#define CSR_OFF_FUNCS(NAME, FL, RD, WR)                    \
+    [LOONGARCH_CSR_##NAME] = {                             \
+        .offset = offsetof(CPULoongArchState, CSR_##NAME), \
+        .flags = FL, .readfn = RD, .writefn = WR           \
+    }
+
+#define CSR_OFF_ARRAY(NAME, N)                                \
+    [LOONGARCH_CSR_##NAME(N)] = {                             \
+        .offset = offsetof(CPULoongArchState, CSR_##NAME[N]), \
+        .flags = 0, .readfn = NULL, .writefn = NULL           \
+    }
+
+#define CSR_OFF_FLAGS(NAME, FL)   CSR_OFF_FUNCS(NAME, FL, NULL, NULL)
+#define CSR_OFF(NAME)             CSR_OFF_FLAGS(NAME, 0)
+
+static CSRInfo csr_info[] = {
+    CSR_OFF_FLAGS(CRMD, CSRFL_EXITTB),
+    CSR_OFF(PRMD),
+    CSR_OFF_FLAGS(EUEN, CSRFL_EXITTB),
+    CSR_OFF_FLAGS(MISC, CSRFL_READONLY),
+    CSR_OFF(ECFG),
+    CSR_OFF_FLAGS(ESTAT, CSRFL_EXITTB),
+    CSR_OFF(ERA),
+    CSR_OFF(BADV),
+    CSR_OFF_FLAGS(BADI, CSRFL_READONLY),
+    CSR_OFF(EENTRY),
+    CSR_OFF(TLBIDX),
+    CSR_OFF(TLBEHI),
+    CSR_OFF(TLBELO0),
+    CSR_OFF(TLBELO1),
+    CSR_OFF_FLAGS(ASID, CSRFL_EXITTB),
+    CSR_OFF(PGDL),
+    CSR_OFF(PGDH),
+    CSR_OFF_FLAGS(PGD, CSRFL_READONLY),
+    CSR_OFF(PWCL),
+    CSR_OFF(PWCH),
+    CSR_OFF(STLBPS),
+    CSR_OFF(RVACFG),
+    CSR_OFF_FLAGS(CPUID, CSRFL_READONLY),
+    CSR_OFF_FLAGS(PRCFG1, CSRFL_READONLY),
+    CSR_OFF_FLAGS(PRCFG2, CSRFL_READONLY),
+    CSR_OFF_FLAGS(PRCFG3, CSRFL_READONLY),
+    CSR_OFF_ARRAY(SAVE, 0),
+    CSR_OFF_ARRAY(SAVE, 1),
+    CSR_OFF_ARRAY(SAVE, 2),
+    CSR_OFF_ARRAY(SAVE, 3),
+    CSR_OFF_ARRAY(SAVE, 4),
+    CSR_OFF_ARRAY(SAVE, 5),
+    CSR_OFF_ARRAY(SAVE, 6),
+    CSR_OFF_ARRAY(SAVE, 7),
+    CSR_OFF_ARRAY(SAVE, 8),
+    CSR_OFF_ARRAY(SAVE, 9),
+    CSR_OFF_ARRAY(SAVE, 10),
+    CSR_OFF_ARRAY(SAVE, 11),
+    CSR_OFF_ARRAY(SAVE, 12),
+    CSR_OFF_ARRAY(SAVE, 13),
+    CSR_OFF_ARRAY(SAVE, 14),
+    CSR_OFF_ARRAY(SAVE, 15),
+    CSR_OFF(TID),
+    CSR_OFF_FLAGS(TCFG, CSRFL_IO),
+    CSR_OFF_FLAGS(TVAL, CSRFL_READONLY | CSRFL_IO),
+    CSR_OFF(CNTC),
+    CSR_OFF_FLAGS(TICLR, CSRFL_IO),
+    CSR_OFF(LLBCTL),
+    CSR_OFF(IMPCTL1),
+    CSR_OFF(IMPCTL2),
+    CSR_OFF(TLBRENTRY),
+    CSR_OFF(TLBRBADV),
+    CSR_OFF(TLBRERA),
+    CSR_OFF(TLBRSAVE),
+    CSR_OFF(TLBRELO0),
+    CSR_OFF(TLBRELO1),
+    CSR_OFF(TLBREHI),
+    CSR_OFF(TLBRPRMD),
+    CSR_OFF(MERRCTL),
+    CSR_OFF(MERRINFO1),
+    CSR_OFF(MERRINFO2),
+    CSR_OFF(MERRENTRY),
+    CSR_OFF(MERRERA),
+    CSR_OFF(MERRSAVE),
+    CSR_OFF(CTAG),
+    CSR_OFF_ARRAY(DMW, 0),
+    CSR_OFF_ARRAY(DMW, 1),
+    CSR_OFF_ARRAY(DMW, 2),
+    CSR_OFF_ARRAY(DMW, 3),
+    CSR_OFF(DBG),
+    CSR_OFF(DERA),
+    CSR_OFF(DSAVE),
+};
+
+CSRInfo *get_csr(unsigned int csr_num)
+{
+    CSRInfo *csr;
+
+    if (csr_num >= ARRAY_SIZE(csr_info)) {
+        return NULL;
+    }
+
+    csr = &csr_info[csr_num];
+    if (csr->offset == 0) {
+        return NULL;
+    }
+
+    return csr;
+}
diff --git a/target/loongarch/csr.h b/target/loongarch/csr.h
index 20d4bf5..caad832 100644
--- a/target/loongarch/csr.h
+++ b/target/loongarch/csr.h
@@ -22,4 +22,5 @@ typedef struct {
     GenCSRFunc writefn;
 } CSRInfo;
 
+CSRInfo *get_csr(unsigned int csr_num);
 #endif /* TARGET_LOONGARCH_CSR_H */
diff --git a/target/loongarch/meson.build b/target/loongarch/meson.build
index 7817318..20bd3e2 100644
--- a/target/loongarch/meson.build
+++ b/target/loongarch/meson.build
@@ -10,6 +10,7 @@ loongarch_system_ss = ss.source_set()
 loongarch_system_ss.add(files(
   'arch_dump.c',
   'cpu_helper.c',
+  'csr.c',
   'loongarch-qmp-cmds.c',
   'machine.c',
 ))
diff --git a/target/loongarch/tcg/insn_trans/trans_privileged.c.inc b/target/loongarch/tcg/insn_trans/trans_privileged.c.inc
index 87506ec..3afa23a 100644
--- a/target/loongarch/tcg/insn_trans/trans_privileged.c.inc
+++ b/target/loongarch/tcg/insn_trans/trans_privileged.c.inc
@@ -45,99 +45,6 @@ GEN_FALSE_TRANS(idle)
 typedef void (*GenCSRRead)(TCGv dest, TCGv_ptr env);
 typedef void (*GenCSRWrite)(TCGv dest, TCGv_ptr env, TCGv src);
 
-#define CSR_OFF_FUNCS(NAME, FL, RD, WR)                    \
-    [LOONGARCH_CSR_##NAME] = {                             \
-        .offset = offsetof(CPULoongArchState, CSR_##NAME), \
-        .flags = FL, .readfn = RD, .writefn = WR           \
-    }
-
-#define CSR_OFF_ARRAY(NAME, N)                                \
-    [LOONGARCH_CSR_##NAME(N)] = {                             \
-        .offset = offsetof(CPULoongArchState, CSR_##NAME[N]), \
-        .flags = 0, .readfn = NULL, .writefn = NULL           \
-    }
-
-#define CSR_OFF_FLAGS(NAME, FL) \
-    CSR_OFF_FUNCS(NAME, FL, NULL, NULL)
-
-#define CSR_OFF(NAME) \
-    CSR_OFF_FLAGS(NAME, 0)
-
-static CSRInfo csr_info[] = {
-    CSR_OFF_FLAGS(CRMD, CSRFL_EXITTB),
-    CSR_OFF(PRMD),
-    CSR_OFF_FLAGS(EUEN, CSRFL_EXITTB),
-    CSR_OFF_FLAGS(MISC, CSRFL_READONLY),
-    CSR_OFF(ECFG),
-    CSR_OFF_FLAGS(ESTAT, CSRFL_EXITTB),
-    CSR_OFF(ERA),
-    CSR_OFF(BADV),
-    CSR_OFF_FLAGS(BADI, CSRFL_READONLY),
-    CSR_OFF(EENTRY),
-    CSR_OFF(TLBIDX),
-    CSR_OFF(TLBEHI),
-    CSR_OFF(TLBELO0),
-    CSR_OFF(TLBELO1),
-    CSR_OFF_FLAGS(ASID, CSRFL_EXITTB),
-    CSR_OFF(PGDL),
-    CSR_OFF(PGDH),
-    CSR_OFF_FLAGS(PGD, CSRFL_READONLY),
-    CSR_OFF(PWCL),
-    CSR_OFF(PWCH),
-    CSR_OFF(STLBPS),
-    CSR_OFF(RVACFG),
-    CSR_OFF_FLAGS(CPUID, CSRFL_READONLY),
-    CSR_OFF_FLAGS(PRCFG1, CSRFL_READONLY),
-    CSR_OFF_FLAGS(PRCFG2, CSRFL_READONLY),
-    CSR_OFF_FLAGS(PRCFG3, CSRFL_READONLY),
-    CSR_OFF_ARRAY(SAVE, 0),
-    CSR_OFF_ARRAY(SAVE, 1),
-    CSR_OFF_ARRAY(SAVE, 2),
-    CSR_OFF_ARRAY(SAVE, 3),
-    CSR_OFF_ARRAY(SAVE, 4),
-    CSR_OFF_ARRAY(SAVE, 5),
-    CSR_OFF_ARRAY(SAVE, 6),
-    CSR_OFF_ARRAY(SAVE, 7),
-    CSR_OFF_ARRAY(SAVE, 8),
-    CSR_OFF_ARRAY(SAVE, 9),
-    CSR_OFF_ARRAY(SAVE, 10),
-    CSR_OFF_ARRAY(SAVE, 11),
-    CSR_OFF_ARRAY(SAVE, 12),
-    CSR_OFF_ARRAY(SAVE, 13),
-    CSR_OFF_ARRAY(SAVE, 14),
-    CSR_OFF_ARRAY(SAVE, 15),
-    CSR_OFF(TID),
-    CSR_OFF_FLAGS(TCFG, CSRFL_IO),
-    CSR_OFF_FLAGS(TVAL, CSRFL_READONLY | CSRFL_IO),
-    CSR_OFF(CNTC),
-    CSR_OFF_FLAGS(TICLR, CSRFL_IO),
-    CSR_OFF(LLBCTL),
-    CSR_OFF(IMPCTL1),
-    CSR_OFF(IMPCTL2),
-    CSR_OFF(TLBRENTRY),
-    CSR_OFF(TLBRBADV),
-    CSR_OFF(TLBRERA),
-    CSR_OFF(TLBRSAVE),
-    CSR_OFF(TLBRELO0),
-    CSR_OFF(TLBRELO1),
-    CSR_OFF(TLBREHI),
-    CSR_OFF(TLBRPRMD),
-    CSR_OFF(MERRCTL),
-    CSR_OFF(MERRINFO1),
-    CSR_OFF(MERRINFO2),
-    CSR_OFF(MERRENTRY),
-    CSR_OFF(MERRERA),
-    CSR_OFF(MERRSAVE),
-    CSR_OFF(CTAG),
-    CSR_OFF_ARRAY(DMW, 0),
-    CSR_OFF_ARRAY(DMW, 1),
-    CSR_OFF_ARRAY(DMW, 2),
-    CSR_OFF_ARRAY(DMW, 3),
-    CSR_OFF(DBG),
-    CSR_OFF(DERA),
-    CSR_OFF(DSAVE),
-};
-
 static bool check_plv(DisasContext *ctx)
 {
     if (ctx->plv == MMU_PLV_USER) {
@@ -147,20 +54,6 @@ static bool check_plv(DisasContext *ctx)
     return false;
 }
 
-static CSRInfo *get_csr(unsigned csr_num)
-{
-    CSRInfo *csr;
-
-    if (csr_num >= ARRAY_SIZE(csr_info)) {
-        return NULL;
-    }
-    csr = &csr_info[csr_num];
-    if (csr->offset == 0) {
-        return NULL;
-    }
-    return csr;
-}
-
 static bool set_csr_trans_func(unsigned int csr_num, GenCSRRead readfn,
                                GenCSRWrite writefn)
 {