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target/xtensa: fix s32c1i TCGMemOp flags 

s32c1i must load and store value with target endianness, not host.
This results in an infinite loop in atomic cmpxchg sequences when target
endianness doesn't match host endianness.

Fixes: 9fb40342d4 ("target/xtensa: support MTTCG")
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 7a54cfbcee)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
stable-3.0
Max Filippov 2018-09-10 18:23:35 -07:00 committed by Michael Roth
parent ef6de9e720
commit ccdd67c8d9
1 changed files with 1 additions and 1 deletions
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2
target/xtensa/translate.c
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@ -2288,7 +2288,7 @@ static void translate_s32c1i(DisasContext *dc, const uint32_t arg[],
gen_load_store_alignment(dc, 2, addr, true);
gen_check_atomctl(dc, addr);
tcg_gen_atomic_cmpxchg_i32(cpu_R[arg[0]], addr, cpu_SR[SCOMPARE1],
tmp, dc->cring, MO_32);
tmp, dc->cring, MO_TEUL);
tcg_temp_free(addr);
tcg_temp_free(tmp);
}