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target/ppc: Fix lqarx to set cpu_reserve 

lqarx does not set cpu_reserve, which causes stqcx. to never succeed.

Cc: qemu-stable@nongnu.org
Fixes: 94bf265867 ("target/ppc: Use atomic load for LQ and LQARX")
Fixes: 57b38ffd0c ("target/ppc: Use tcg_gen_qemu_{ld,st}_i128 for LQARX, LQ, STQ")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230605025445.161932-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
(cherry picked from commit e025e8f5a8)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Nicholas Piggin 2023-06-05 12:54:42 +10:00 committed by Michael Tokarev
parent 9b55660e4a
commit d31e0a3843
1 changed files with 1 additions and 0 deletions
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target/ppc/translate.c
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@ -3972,6 +3972,7 @@ static void gen_lqarx(DisasContext *ctx)
}
tcg_temp_free(EA);
tcg_gen_mov_tl(cpu_reserve, EA);
tcg_gen_st_tl(hi, cpu_env, offsetof(CPUPPCState, reserve_val));
tcg_gen_st_tl(lo, cpu_env, offsetof(CPUPPCState, reserve_val2));
}