From: Sergey Fedorov <[email protected]> Ensure direct jump patching in SPARC is atomic by using atomic_read()/atomic_set() for code patching.
Signed-off-by: Sergey Fedorov <[email protected]> Signed-off-by: Sergey Fedorov <[email protected]> Reviewed-by: Alex Bennée <[email protected]> --- 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
