From: Sergey Fedorov <serge.f...@gmail.com>
Ensure direct jump patching in MIPS is atomic by using
atomic_read()/atomic_set() for code patching.
Signed-off-by: Sergey Fedorov <serge.f...@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedo...@linaro.org>
Message-Id: <1461341333-19646-11-git-send-email-sergey.fedo...@linaro.org>
Signed-off-by: Richard Henderson <r...@twiddle.net>
[rth: Merged the deposit32 followup.]
[rth: Merged the following followup.]
Message-Id: <1462210518-26522-1-git-send-email-sergey.fedo...@linaro.org>
---
tcg/mips/tcg-target.inc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tcg/mips/tcg-target.inc.c b/tcg/mips/tcg-target.inc.c
index aaf881c..1e5a6b4 100644
--- a/tcg/mips/tcg-target.inc.c
+++ b/tcg/mips/tcg-target.inc.c
@@ -1885,7 +1885,6 @@ static void tcg_target_init(TCGContext *s)
void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr)
{
- uint32_t *ptr = (uint32_t *)jmp_addr;
- *ptr = deposit32(*ptr, 0, 26, addr >> 2);
+ atomic_set((uint32_t *)jmp_addr, deposit32(OPC_J, 0, 26, addr >> 2));
flush_icache_range(jmp_addr, jmp_addr + 4);
}
--
2.5.5
