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| author | Nicholas Piggin <npiggin@gmail.com> | 2023-06-05 12:54:44 +1000 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2023-06-10 10:19:24 -0300 |
| commit | 2c901dca1863515bd71c3f351610f0698cb8f0b4 (patch) | |
| tree | 69028d53b1235203ced15b9ed16092cc8fc0c3c5 /target/ppc | |
| parent | 392d328abe7534a6e852151740913e2cd50426bc (diff) | |
| download | qemu-2c901dca1863515bd71c3f351610f0698cb8f0b4.zip qemu-2c901dca1863515bd71c3f351610f0698cb8f0b4.tar.gz qemu-2c901dca1863515bd71c3f351610f0698cb8f0b4.tar.bz2 | |
target/ppc: Remove larx/stcx. memory barrier semantics
larx and stcx. are not defined to order any memory operations.
Remove the barriers.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20230605025445.161932-3-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'target/ppc')
| -rw-r--r-- | target/ppc/translate.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/target/ppc/translate.c b/target/ppc/translate.c index cf0bd79..cb47644 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -3476,7 +3476,6 @@ static void gen_load_locked(DisasContext *ctx, MemOp memop) tcg_gen_mov_tl(cpu_reserve, t0); tcg_gen_movi_tl(cpu_reserve_length, memop_size(memop)); tcg_gen_mov_tl(cpu_reserve_val, gpr); - tcg_gen_mb(TCG_MO_ALL | TCG_BAR_LDAQ); } #define LARX(name, memop) \ @@ -3720,11 +3719,6 @@ static void gen_conditional_store(DisasContext *ctx, MemOp memop) gen_set_label(l1); - /* - * Address mismatch implies failure. But we still need to provide - * the memory barrier semantics of the instruction. - */ - tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL); tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so); gen_set_label(l2); @@ -3828,11 +3822,6 @@ static void gen_stqcx_(DisasContext *ctx) tcg_gen_br(lab_over); gen_set_label(lab_fail); - /* - * Address mismatch implies failure. But we still need to provide - * the memory barrier semantics of the instruction. - */ - tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL); tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so); gen_set_label(lab_over); |