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crnand and crnor fixes

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dingusdev 2022-01-22 22:33:13 -07:00
parent 5883524fb8
commit 3258abe190
1 changed files with 9 additions and 6 deletions
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15
cpu/ppc/ppcopcodes.cpp
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@ -1270,18 +1270,21 @@ void dppc_interpreter::ppc_creqv() {
}
void dppc_interpreter::ppc_crnand() {
ppc_grab_regsdab();
if (!((ppc_state.cr & (0x80000000UL >> reg_a)) && (ppc_state.cr & (0x80000000UL >> reg_b)))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
uint8_t ir = (ppc_state.cr >> (31 - reg_a)) & (ppc_state.cr >> (31 - reg_b));
if (ir & 1) {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
} else {
ppc_state.cr |= (0x80000000UL >> reg_d);
}
}
void dppc_interpreter::ppc_crnor() {
ppc_grab_regsdab();
if (!((ppc_state.cr & (0x80000000UL >> reg_a)) || (ppc_state.cr & (0x80000000UL >> reg_b)))) {
ppc_state.cr |= (0x80000000UL >> reg_d);
} else {
uint8_t ir = (ppc_state.cr >> (31 - reg_a)) | (ppc_state.cr >> (31 - reg_b));
if (ir & 1) {
ppc_state.cr &= ~(0x80000000UL >> reg_d);
} else {
ppc_state.cr |= (0x80000000UL >> reg_d);
}
}