[PATCH v2 6/8] target/loongarch: Add avail_LAM to check atomic instructions

[Song Gao]

Signed-off-by: Song Gao <gaosong@loongson.cn>
---
 target/loongarch/insn_trans/trans_atomic.c.inc | 12 ++++++++++++
 target/loongarch/translate.h                   |  1 +
 2 files changed, 13 insertions(+)

diff --git a/target/loongarch/insn_trans/trans_atomic.c.inc 
b/target/loongarch/insn_trans/trans_atomic.c.inc
index 194818d74d..867d09375a 100644
--- a/target/loongarch/insn_trans/trans_atomic.c.inc
+++ b/target/loongarch/insn_trans/trans_atomic.c.inc
@@ -9,6 +9,10 @@ static bool gen_ll(DisasContext *ctx, arg_rr_i *a, MemOp mop)
     TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
     TCGv t0 = make_address_i(ctx, src1, a->imm);
 
+    if (!avail_LAM(ctx)) {
+        return true;
+    }
+
     tcg_gen_qemu_ld_i64(dest, t0, ctx->mem_idx, mop);
     tcg_gen_st_tl(t0, cpu_env, offsetof(CPULoongArchState, lladdr));
     tcg_gen_st_tl(dest, cpu_env, offsetof(CPULoongArchState, llval));
@@ -25,6 +29,10 @@ static bool gen_sc(DisasContext *ctx, arg_rr_i *a, MemOp mop)
     TCGv t0 = tcg_temp_new();
     TCGv val = tcg_temp_new();
 
+    if (!avail_LAM(ctx)) {
+        return true;
+    }
+
     TCGLabel *l1 = gen_new_label();
     TCGLabel *done = gen_new_label();
 
@@ -53,6 +61,10 @@ static bool gen_am(DisasContext *ctx, arg_rrr *a,
     TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
     TCGv val = gpr_src(ctx, a->rk, EXT_NONE);
 
+    if (!avail_LAM(ctx)) {
+        return true;
+    }
+
     if (a->rd != 0 && (a->rj == a->rd || a->rk == a->rd)) {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "Warning: source register overlaps destination register"
diff --git a/target/loongarch/translate.h b/target/loongarch/translate.h
index f0d7b82932..faf4ce87f9 100644
--- a/target/loongarch/translate.h
+++ b/target/loongarch/translate.h
@@ -21,6 +21,7 @@
 #define avail_FP_SP(C) (FIELD_EX32((C)->cpucfg2, CPUCFG2, FP_SP))
 #define avail_FP_DP(C) (FIELD_EX32((C)->cpucfg2, CPUCFG2, FP_DP))
 #define avail_LSPW(C)  (FIELD_EX32((C)->cpucfg2, CPUCFG2, LSPW))
+#define avail_LAM(C)   (FIELD_EX32((C)->cpucfg2, CPUCFG2, LAM))
 
 /*
  * If an operation is being performed on less than TARGET_LONG_BITS,
-- 
2.39.1