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target/arm: Check HAVE_CMPXCHG128 at translate time

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Backports part of commit 62823083b8a2da8e126bb82b7b70f68eaa27b338 from
qemu
This commit is contained in:
Richard Henderson 2018-10-23 15:26:54 -04:00 committed by Lioncash
parent 65beab9dd9
commit af6c47e192
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GPG Key ID: 4E3C3CC1031BA9C7
1 changed files with 2 additions and 6 deletions
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8
qemu/target/arm/helper-a64.c
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@ -686,9 +686,7 @@ void HELPER(casp_le_parallel)(CPUARMState *env, uint32_t rs, uint64_t addr,
int mem_idx;
TCGMemOpIdx oi;
if (!HAVE_CMPXCHG128) {
cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);
}
assert(HAVE_CMPXCHG128);
mem_idx = cpu_mmu_index(env, false);
oi = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx);
@ -710,9 +708,7 @@ void HELPER(casp_be_parallel)(CPUARMState *env, uint32_t rs, uint64_t addr,
int mem_idx;
TCGMemOpIdx oi;
if (!HAVE_CMPXCHG128) {
cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);
}
assert(HAVE_CMPXCHG128);
mem_idx = cpu_mmu_index(env, false);
oi = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx);