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authorSergey Fedorov <serge.fdrv@gmail.com>2016-04-22 19:08:52 +0300
committerRichard Henderson <rth@twiddle.net>2016-05-12 14:06:41 -1000
commitc82460a560176ef69c2f0662bd280612e274db96 (patch)
tree3ef38c09e6084a63a633a85d46684f1c6b9c181d /tcg/mips/tcg-target.inc.c
parent84f79fb7c6e857edc807e4a251338243ce0cbac3 (diff)
downloadqemu-arm-c82460a560176ef69c2f0662bd280612e274db96.tar.gz
tcg/mips: Make direct jump patching thread-safe
Ensure direct jump patching in MIPS is atomic by using atomic_read()/atomic_set() for code patching. Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Message-Id: <1461341333-19646-11-git-send-email-sergey.fedorov@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net> [rth: Merged the deposit32 followup.] [rth: Merged the following followup.] Message-Id: <1462210518-26522-1-git-send-email-sergey.fedorov@linaro.org>
Diffstat (limited to 'tcg/mips/tcg-target.inc.c')
-rw-r--r--tcg/mips/tcg-target.inc.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/tcg/mips/tcg-target.inc.c b/tcg/mips/tcg-target.inc.c
index aaf881cfd0..1e5a6b41fa 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);
}