From: Sergey Fedorov <serge.f...@gmail.com>
Ensure direct jump patching in SPARC 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>
Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
---
Changes in v2:
* Use deposit32() to put displacement into call instruction
tcg/sparc/tcg-target.inc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tcg/sparc/tcg-target.inc.c b/tcg/sparc/tcg-target.inc.c
index 54df1bc42432..3b54fbd22760 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. */
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);
}
--
2.8.1
