[PATCH] target/loongarch: Add CSR_CPUID reg in cpu_env

[Tianrui Zhao]

Add CSR_CPUID register in cpu_env to save the cpu_index
value.

Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
---
 target/loongarch/cpu.c                             | 1 +
 target/loongarch/cpu.h                             | 1 +
 target/loongarch/insn_trans/trans_privileged.c.inc | 8 +-------
 3 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 97e6579f6a..bee5949ed2 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -486,6 +486,7 @@ static void loongarch_cpu_reset_hold(Object *obj)
 
     env->CSR_ESTAT = env->CSR_ESTAT & (~MAKE_64BIT_MASK(0, 2));
     env->CSR_RVACFG = FIELD_DP64(env->CSR_RVACFG, CSR_RVACFG, RBITS, 0);
+    env->CSR_CPUID = cs->cpu_index;
     env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0);
     env->CSR_LLBCTL = FIELD_DP64(env->CSR_LLBCTL, CSR_LLBCTL, KLO, 0);
     env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 0);
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
index e11c875188..1d9a4009b9 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -288,6 +288,7 @@ typedef struct CPUArchState {
     uint64_t CSR_PWCH;
     uint64_t CSR_STLBPS;
     uint64_t CSR_RVACFG;
+    uint64_t CSR_CPUID;
     uint64_t CSR_PRCFG1;
     uint64_t CSR_PRCFG2;
     uint64_t CSR_PRCFG3;
diff --git a/target/loongarch/insn_trans/trans_privileged.c.inc 
b/target/loongarch/insn_trans/trans_privileged.c.inc
index 5a04352b01..d1d98c6e9e 100644
--- a/target/loongarch/insn_trans/trans_privileged.c.inc
+++ b/target/loongarch/insn_trans/trans_privileged.c.inc
@@ -99,13 +99,7 @@ static const CSRInfo csr_info[] = {
     CSR_OFF(PWCH),
     CSR_OFF(STLBPS),
     CSR_OFF(RVACFG),
-    [LOONGARCH_CSR_CPUID] = {
-        .offset = (int)offsetof(CPUState, cpu_index)
-                  - (int)offsetof(LoongArchCPU, env),
-        .flags = CSRFL_READONLY,
-        .readfn = NULL,
-        .writefn = NULL
-    },
+    CSR_OFF_FLAGS(CPUID, CSRFL_READONLY),
     CSR_OFF_FLAGS(PRCFG1, CSRFL_READONLY),
     CSR_OFF_FLAGS(PRCFG2, CSRFL_READONLY),
     CSR_OFF_FLAGS(PRCFG3, CSRFL_READONLY),
-- 
2.31.1