From: Richard Henderson <richard.hender...@linaro.org>
Leave only the minimal amount of code within the STCX macro,
moving the rest of the code into gen_conditional_store.
Remove the explicit call to gen_check_align; the matching LDAX will
have already checked alignment, and we verify the same address.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
---
target/ppc/translate.c | 28 +++++++++++-----------------
1 file changed, 11 insertions(+), 17 deletions(-)
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 03e8c5df03..e751072404 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -3201,14 +3201,17 @@ ST_ATOMIC(stwat, DEF_MEMOP(MO_UL), i32, trunc_tl_i32)
ST_ATOMIC(stdat, DEF_MEMOP(MO_Q), i64, mov_i64)
#endif
-static void gen_conditional_store(DisasContext *ctx, TCGv EA,
- int reg, int memop)
+static void gen_conditional_store(DisasContext *ctx, TCGMemOp memop)
{
TCGLabel *l1 = gen_new_label();
TCGLabel *l2 = gen_new_label();
- TCGv t0;
+ TCGv t0 = tcg_temp_new();
+ int reg = rS(ctx->opcode);
- tcg_gen_brcond_tl(TCG_COND_NE, EA, cpu_reserve, l1);
+ gen_set_access_type(ctx, ACCESS_RES);
+ gen_addr_reg_index(ctx, t0);
+ tcg_gen_brcond_tl(TCG_COND_NE, t0, cpu_reserve, l1);
+ tcg_temp_free(t0);
t0 = tcg_temp_new();
tcg_gen_atomic_cmpxchg_tl(t0, cpu_reserve, cpu_reserve_val,
@@ -3232,19 +3235,10 @@ static void gen_conditional_store(DisasContext *ctx,
TCGv EA,
tcg_gen_movi_tl(cpu_reserve, -1);
}
-#define STCX(name, memop) \
-static void gen_##name(DisasContext *ctx) \
-{ \
- TCGv t0; \
- int len = MEMOP_GET_SIZE(memop); \
- gen_set_access_type(ctx, ACCESS_RES); \
- t0 = tcg_temp_local_new(); \
- gen_addr_reg_index(ctx, t0); \
- if (len > 1) { \
- gen_check_align(ctx, t0, (len) - 1); \
- } \
- gen_conditional_store(ctx, t0, rS(ctx->opcode), memop); \
- tcg_temp_free(t0); \
+#define STCX(name, memop) \
+static void gen_##name(DisasContext *ctx) \
+{ \
+ gen_conditional_store(ctx, memop); \
}
STCX(stbcx_, DEF_MEMOP(MO_UB))
--
2.17.1
