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tcg/sparc: Make direct jump patching thread-safe

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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>
This commit is contained in:
Sergey Fedorov 2016-04-22 19:08:51 +03:00 committed by Richard Henderson
parent 9e26911295
commit 84f79fb7c6
1 changed files with 1 additions and 1 deletions
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2
tcg/sparc/tcg-target.inc.c
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@ -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);
}