uint32_t helper_subkc(uint32_t a, uint32_t b, uint32_t k, uint32_t c)
{
uint32_t d, cf = 1, ncf;
if (c)
cf = env->sregs[SR_MSR] >> 31;
assert(cf == 0 || cf == 1);
d = b + ~a + cf;
if (!k) {
ncf = compute_carry(b, ~a, cf);
assert(ncf == 0 || ncf == 1);
if (ncf)
env->sregs[SR_MSR] |= MSR_C | MSR_CC;
else
env->sregs[SR_MSR] &= ~(MSR_C | MSR_CC);
}
D(qemu_log("%x = %x + %x cf=%d ncf=%d k=%d c=%d\n",
d, a, b, cf, ncf, k, c));
return d;
}
uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
{
return compute_carry(a, b, cf);
}
uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
{
uint32_t ncf;
ncf = compute_carry(a, b, cf);
return ncf;
}
