aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorSergey Fedorov <serge.fdrv@gmail.com>2016-04-22 19:08:51 +0300
committerRichard Henderson <rth@twiddle.net>2016-05-12 14:06:41 -1000
commit84f79fb7c6e857edc807e4a251338243ce0cbac3 (patch)
tree0b8e17ad6af0c3e3767d802c941c26fdf265c1cf
parent9e269112953be4d670cb0d25042bd6546fcf3e45 (diff)
downloadqemu-arm-84f79fb7c6e857edc807e4a251338243ce0cbac3.tar.gz
tcg/sparc: Make direct jump patching thread-safe
Ensure direct jump patching in SPARC 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> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <1461341333-19646-10-git-send-email-sergey.fedorov@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
-rw-r--r--tcg/sparc/tcg-target.inc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tcg/sparc/tcg-target.inc.c b/tcg/sparc/tcg-target.inc.c
index d641cfd8c5..c6479e2507 100644
--- a/tcg/sparc/tcg-target.inc.c
+++ b/tcg/sparc/tcg-target.inc.c
@@ -1647,6 +1647,6 @@ void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr)
the code_gen_buffer can't be larger than 2GB. */
tcg_debug_assert(disp == (int32_t)disp);
- *ptr = CALL | (uint32_t)disp >> 2;
+ atomic_set(ptr, deposit32(CALL, 0, 30, disp >> 2));
flush_icache_range(jmp_addr, jmp_addr + 4);
}