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More opcode fixes and adjustments

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dingusdev 2019-08-13 20:29:52 -07:00 committed by GitHub
parent 449934e0f3
commit 698a761d15
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1 changed files with 84 additions and 76 deletions
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ppcopcodes.cpp
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@ -1072,92 +1072,100 @@ void ppc_divw(){
ppc_grab_regsdab();
//handle division by zero cases
if (ppc_result_b == 0){
switch (ppc_result_b){
case 0:
ppc_result_d = 0;
ppc_store_result_regd();
return;
}
else if ((ppc_result_a == 0x80000000) & (ppc_result_b == 0xFFFFFFFF)){
ppc_result_d = 0;
case 0xFFFFFFFF:
if (ppc_result_a == 0x80000000){
ppc_result_d = 0;
ppc_store_result_regd();
return;
}
default:
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_store_result_regd();
return;
}
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_store_result_regd();
}
void ppc_divwdot(){
ppc_grab_regsdab();
//handle division by zero cases
if (ppc_result_b == 0){
switch (ppc_result_b){
case 0:
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
return;
}
else if ((ppc_result_a == 0x80000000) & (ppc_result_b == 0xFFFFFFFF)){
ppc_result_d = 0;
case 0xFFFFFFFF:
if (ppc_result_a == 0x80000000){
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
return;
}
default:
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
return;
}
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_divwo(){
ppc_grab_regsdab();
//handle division by zero cases
if (ppc_result_b == 0){
switch (ppc_result_b){
case 0:
ppc_result_d = 0;
ppc_state.ppc_cr |= 0x10000000;
ppc_store_result_regd();
return;
}
else if ((ppc_result_a == 0x80000000) & (ppc_result_b == 0xFFFFFFFF)){
ppc_result_d = 0;
ppc_state.ppc_cr |= 0x10000000;
case 0xFFFFFFFF:
if (ppc_result_a == 0x80000000){
ppc_result_d = 0;
ppc_state.ppc_cr |= 0x10000000;
ppc_store_result_regd();
return;
}
default:
ppc_setsoov(ppc_result_a, ppc_result_b);
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_store_result_regd();
return;
}
ppc_setsoov(ppc_result_a, ppc_result_b);
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_store_result_regd();
}
void ppc_divwodot(){
ppc_grab_regsdab();
//handle division by zero cases
if (ppc_result_b == 0){
//handle division by zero cases
switch (ppc_result_b){
case 0:
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
ppc_state.ppc_cr |= 0x10000000;
return;
}
else if ((ppc_result_a == 0x80000000) & (ppc_result_b == 0xFFFFFFFF)){
ppc_result_d = 0;
case 0xFFFFFFFF:
if (ppc_result_a == 0x80000000){
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
ppc_state.ppc_cr |= 0x10000000;
return;
}
default:
ppc_setsoov(ppc_result_a, ppc_result_b);
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
ppc_state.ppc_cr |= 0x10000000;
return;
}
ppc_setsoov(ppc_result_a, ppc_result_b);
sidiv_result = (int32_t) ppc_result_a / (int32_t) ppc_result_b;
ppc_result_d = (uint32_t) sidiv_result;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
void ppc_divwu(){
@ -1731,9 +1739,9 @@ void ppc_cmpi(){
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regsasimm();
xercon = (ppc_state.ppc_spr[1] & 0x80000000) >> 3;
cmp_c = (((int32_t)ppc_result_a) == simm) ? 0x20000000 : (((int32_t)ppc_result_a) > simm) ? 0x40000000 : 0x80000000;
ppc_state.ppc_cr = ((ppc_state.ppc_cr & ~(0xf0000000 >> crf_d)) | ((cmp_c + xercon) >> crf_d));
xercon = (ppc_state.ppc_spr[1] & 0x80000000UL) >> 3;
cmp_c = (((int32_t)ppc_result_a) == simm) ? 0x20000000UL : (((int32_t)ppc_result_a) > simm) ? 0x40000000UL : 0x80000000UL;
ppc_state.ppc_cr = ((ppc_state.ppc_cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
void ppc_cmpl(){
@ -1747,9 +1755,9 @@ void ppc_cmpl(){
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regssab();
xercon = (ppc_state.ppc_spr[1] & 0x80000000) >> 3;
cmp_c = (ppc_result_a == ppc_result_b) ? 0x20000000 : (ppc_result_a > ppc_result_b) ? 0x40000000 : 0x80000000;
ppc_state.ppc_cr = ((ppc_state.ppc_cr & ~(0xf0000000 >> crf_d)) | ((cmp_c + xercon) >> crf_d));
xercon = (ppc_state.ppc_spr[1] & 0x80000000UL) >> 3;
cmp_c = (ppc_result_a == ppc_result_b) ? 0x20000000UL : (ppc_result_a > ppc_result_b) ? 0x40000000UL : 0x80000000UL;
ppc_state.ppc_cr = ((ppc_state.ppc_cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
void ppc_cmpli(){
@ -1763,56 +1771,56 @@ void ppc_cmpli(){
crf_d = (ppc_cur_instruction >> 23) & 7;
crf_d = crf_d << 2;
ppc_grab_regssauimm();
xercon = (ppc_state.ppc_spr[1] & 0x80000000) >> 3;
cmp_c = (ppc_result_a == uimm) ? 0x20000000 : (ppc_result_a > uimm) ? 0x40000000 : 0x80000000;
ppc_state.ppc_cr = ((ppc_state.ppc_cr & ~(0xf0000000 >> crf_d)) | ((cmp_c + xercon) >> crf_d));
xercon = (ppc_state.ppc_spr[1] & 0x80000000UL) >> 3;
cmp_c = (ppc_result_a == uimm) ? 0x20000000UL : (ppc_result_a > uimm) ? 0x40000000UL : 0x80000000UL;
ppc_state.ppc_cr = ((ppc_state.ppc_cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
//Condition Register Changes
void ppc_crand(){
ppc_grab_regsdab();
if ((ppc_state.ppc_cr && (0x80000000 >> reg_a)) & (ppc_state.ppc_cr && (0x80000000 >> reg_b))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if ((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) & (ppc_state.ppc_cr & (0x80000000UL >> reg_b))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crandc(){
ppc_grab_regsdab();
if ((ppc_state.ppc_cr && (0x80000000 >> reg_a)) & !(ppc_state.ppc_cr && (0x80000000 >> reg_b))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if ((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) & !(ppc_state.ppc_cr & (0x80000000UL >> reg_b))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_creqv(){
ppc_grab_regsdab();
if (!((ppc_state.ppc_cr && (0x80000000 >> reg_a)) ^ (ppc_state.ppc_cr && (0x80000000 >> reg_b)))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if (!((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) ^ (ppc_state.ppc_cr & (0x80000000UL >> reg_b)))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crnand(){
ppc_grab_regsdab();
if (!((ppc_state.ppc_cr && (0x80000000 >> reg_a)) & (ppc_state.ppc_cr && (0x80000000 >> reg_b)))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if (!((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) & (ppc_state.ppc_cr & (0x80000000UL >> reg_b)))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crnor(){
ppc_grab_regsdab();
if (!((ppc_state.ppc_cr && (0x80000000 >> reg_a)) | (ppc_state.ppc_cr && (0x80000000 >> reg_b)))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if (!((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) | (ppc_state.ppc_cr & (0x80000000UL >> reg_b)))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}
@ -1827,20 +1835,20 @@ void ppc_cror(){
}
void ppc_crorc(){
ppc_grab_regsdab();
if ((ppc_state.ppc_cr && (0x80000000 >> reg_a)) | !(ppc_state.ppc_cr && (0x80000000 >> reg_b))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if ((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) | !(ppc_state.ppc_cr & (0x80000000UL >> reg_b))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}
void ppc_crxor(){
ppc_grab_regsdab();
if ((ppc_state.ppc_cr && (0x80000000 >> reg_a)) ^ (ppc_state.ppc_cr && (0x80000000 >> reg_b))){
ppc_state.ppc_cr |= (0x80000000 >> reg_d);
if ((ppc_state.ppc_cr & (0x80000000UL >> reg_a)) ^ (ppc_state.ppc_cr & (0x80000000UL >> reg_b))){
ppc_state.ppc_cr |= (0x80000000UL >> reg_d);
}
else{
ppc_state.ppc_cr &= ~(0x80000000 >> reg_d);
ppc_state.ppc_cr &= ~(0x80000000UL >> reg_d);
}
}