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Don't rely on dead code elimination

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mio 2024-01-03 16:49:06 +08:00
parent 0406407213
commit 3cff3eb2d5
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GPG Key ID: DFF27E34A47CB873
1 changed files with 34 additions and 12 deletions
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46
qemu/target/ppc/mem_helper.c
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@ -377,57 +377,70 @@ target_ulong helper_lscbx(CPUPPCState *env, target_ulong addr, uint32_t reg,
uint64_t helper_lq_le_parallel(CPUPPCState *env, target_ulong addr,
uint32_t opidx)
{
#ifdef HAVE_ATOMIC128
Int128 ret;
/* We will have raised EXCP_ATOMIC from the translator. */
assert(HAVE_ATOMIC128);
ret = helper_atomic_ldo_le_mmu(env, addr, opidx, GETPC());
env->retxh = int128_gethi(ret);
return int128_getlo(ret);
#else
/* We will have raised EXCP_ATOMIC from the translator. */
abort();
return 0;
#endif
}
uint64_t helper_lq_be_parallel(CPUPPCState *env, target_ulong addr,
uint32_t opidx)
{
#ifdef HAVE_ATOMIC128
Int128 ret;
/* We will have raised EXCP_ATOMIC from the translator. */
assert(HAVE_ATOMIC128);
ret = helper_atomic_ldo_be_mmu(env, addr, opidx, GETPC());
env->retxh = int128_gethi(ret);
return int128_getlo(ret);
#else
/* We will have raised EXCP_ATOMIC from the translator. */
abort();
return 0;
#endif
}
void helper_stq_le_parallel(CPUPPCState *env, target_ulong addr,
uint64_t lo, uint64_t hi, uint32_t opidx)
{
#ifdef HAVE_ATOMIC128
Int128 val;
/* We will have raised EXCP_ATOMIC from the translator. */
assert(HAVE_ATOMIC128);
val = int128_make128(lo, hi);
helper_atomic_sto_le_mmu(env, addr, val, opidx, GETPC());
#else
/* We will have raised EXCP_ATOMIC from the translator. */
abort();
#endif
}
void helper_stq_be_parallel(CPUPPCState *env, target_ulong addr,
uint64_t lo, uint64_t hi, uint32_t opidx)
{
#ifdef HAVE_ATOMIC128
Int128 val;
/* We will have raised EXCP_ATOMIC from the translator. */
assert(HAVE_ATOMIC128);
val = int128_make128(lo, hi);
helper_atomic_sto_be_mmu(env, addr, val, opidx, GETPC());
#else
/* We will have raised EXCP_ATOMIC from the translator. */
abort();
#endif
}
uint32_t helper_stqcx_le_parallel(CPUPPCState *env, target_ulong addr,
uint64_t new_lo, uint64_t new_hi,
uint32_t opidx)
{
#ifdef HAVE_ATOMIC128
bool success = false;
/* We will have raised EXCP_ATOMIC from the translator. */
assert(HAVE_CMPXCHG128);
if (likely(addr == env->reserve_addr)) {
Int128 oldv, cmpv, newv;
@ -440,16 +453,20 @@ uint32_t helper_stqcx_le_parallel(CPUPPCState *env, target_ulong addr,
}
env->reserve_addr = -1;
return env->so + success * CRF_EQ_BIT;
#else
/* We will have raised EXCP_ATOMIC from the translator. */
abort();
return 0;
#endif
}
uint32_t helper_stqcx_be_parallel(CPUPPCState *env, target_ulong addr,
uint64_t new_lo, uint64_t new_hi,
uint32_t opidx)
{
#ifdef HAVE_ATOMIC128
bool success = false;
/* We will have raised EXCP_ATOMIC from the translator. */
assert(HAVE_CMPXCHG128);
if (likely(addr == env->reserve_addr)) {
Int128 oldv, cmpv, newv;
@ -462,6 +479,11 @@ uint32_t helper_stqcx_be_parallel(CPUPPCState *env, target_ulong addr,
}
env->reserve_addr = -1;
return env->so + success * CRF_EQ_BIT;
#else
/* We will have raised EXCP_ATOMIC from the translator. */
abort();
return 0;
#endif
}
#endif