void helper_bndstx64(CPUX86State *env, target_ulong base, target_ulong ptr,
uint64_t lb, uint64_t ub)
{
uintptr_t ra = GETPC();
uint64_t bte;
bte = lookup_bte64(env, base, ra);
cpu_stq_data_ra(env, bte, lb, ra);
cpu_stq_data_ra(env, bte + 8, ub, ra);
cpu_stq_data_ra(env, bte + 16, ptr, ra);
}
void helper_cmpxchg8b_unlocked(CPUX86State *env, target_ulong a0)
{
uintptr_t ra = GETPC();
uint64_t oldv, cmpv, newv;
int eflags;
eflags = cpu_cc_compute_all(env, CC_OP);
cmpv = deposit64(env->regs[R_EAX], 32, 32, env->regs[R_EDX]);
newv = deposit64(env->regs[R_EBX], 32, 32, env->regs[R_ECX]);
oldv = cpu_ldq_data_ra(env, a0, ra);
newv = (cmpv == oldv ? newv : oldv);
/* always do the store */
cpu_stq_data_ra(env, a0, newv, ra);
if (oldv == cmpv) {
eflags |= CC_Z;
} else {
env->regs[R_EAX] = (uint32_t)oldv;
env->regs[R_EDX] = (uint32_t)(oldv >> 32);
eflags &= ~CC_Z;
}
CC_SRC = eflags;
}
void helper_cmpxchg16b_unlocked(CPUX86State *env, target_ulong a0)
{
uintptr_t ra = GETPC();
Int128 oldv, cmpv, newv;
uint64_t o0, o1;
int eflags;
bool success;
if ((a0 & 0xf) != 0) {
raise_exception_ra(env, EXCP0D_GPF, GETPC());
}
eflags = cpu_cc_compute_all(env, CC_OP);
cmpv = int128_make128(env->regs[R_EAX], env->regs[R_EDX]);
newv = int128_make128(env->regs[R_EBX], env->regs[R_ECX]);
o0 = cpu_ldq_data_ra(env, a0 + 0, ra);
o1 = cpu_ldq_data_ra(env, a0 + 8, ra);
oldv = int128_make128(o0, o1);
success = int128_eq(oldv, cmpv);
if (!success) {
newv = oldv;
}
cpu_stq_data_ra(env, a0 + 0, int128_getlo(newv), ra);
cpu_stq_data_ra(env, a0 + 8, int128_gethi(newv), ra);
if (success) {
eflags |= CC_Z;
} else {
env->regs[R_EAX] = int128_getlo(oldv);
env->regs[R_EDX] = int128_gethi(oldv);
eflags &= ~CC_Z;
}
CC_SRC = eflags;
}
