target/riscv: Conceal MO_TE within gen_cmpxchg*()

All callers of gen_cmpxchg() / gen_cmpxchg64() set the MO_TE flag.
Set it once in the callees.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20251010155045.78220-10-philmd@linaro.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/insn_trans/trans_rvzabha.c.inc

@@ -141,5 +141,5 @@ static bool trans_amocas_h(DisasContext *ctx, arg_amocas_h *a)
 {
     REQUIRE_ZACAS(ctx);
     REQUIRE_ZABHA(ctx);
-    return gen_cmpxchg(ctx, a, MO_ALIGN | MO_TE | MO_SW);
+    return gen_cmpxchg(ctx, a, MO_ALIGN | MO_SW);
 }

target/riscv/insn_trans/trans_rvzacas.c.inc

@@ -25,7 +25,7 @@
 static bool trans_amocas_w(DisasContext *ctx, arg_amocas_w *a)
 {
     REQUIRE_ZACAS(ctx);
-    return gen_cmpxchg(ctx, a, MO_ALIGN | MO_TE | MO_SL);
+    return gen_cmpxchg(ctx, a, MO_ALIGN | MO_SL);
 }
 
 static TCGv_i64 get_gpr_pair(DisasContext *ctx, int reg_num)
@@ -76,6 +76,7 @@ static bool gen_cmpxchg64(DisasContext *ctx, arg_atomic *a, MemOp mop)
     TCGv src1 = get_address(ctx, a->rs1, 0);
     TCGv_i64 src2 = get_gpr_pair(ctx, a->rs2);
 
+    mop |= MO_TE;
     decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO);
     tcg_gen_atomic_cmpxchg_i64(dest, src1, dest, src2, ctx->mem_idx, mop);
 
@@ -88,10 +89,10 @@ static bool trans_amocas_d(DisasContext *ctx, arg_amocas_d *a)
     REQUIRE_ZACAS(ctx);
     switch (get_ol(ctx)) {
     case MXL_RV32:
-        return gen_cmpxchg64(ctx, a, MO_ALIGN | MO_TE | MO_UQ);
+        return gen_cmpxchg64(ctx, a, MO_ALIGN | MO_UQ);
     case MXL_RV64:
     case MXL_RV128:
-        return gen_cmpxchg(ctx, a, MO_ALIGN | MO_TE | MO_UQ);
+        return gen_cmpxchg(ctx, a, MO_ALIGN | MO_UQ);
     default:
         g_assert_not_reached();
     }

target/riscv/translate.c

@@ -1156,6 +1156,7 @@ static bool gen_cmpxchg(DisasContext *ctx, arg_atomic *a, MemOp mop)
     TCGv src1 = get_address(ctx, a->rs1, 0);
     TCGv src2 = get_gpr(ctx, a->rs2, EXT_NONE);
 
+    mop |= MO_TE;
     decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO);
     tcg_gen_atomic_cmpxchg_tl(dest, src1, dest, src2, ctx->mem_idx, mop);