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Fixed all multiplication issues

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dingusdev
2020-01-31 18:17:01 -07:00
parent 99e8bc98f3
commit 8c10004f52
1 changed files with 7 additions and 9 deletions
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16
cpu/ppc/ppcopcodes.cpp
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@@ -906,7 +906,7 @@ void ppc_mulhwdot() {
void ppc_mullw() { void ppc_mullw() {
ppc_grab_regsdab(); ppc_grab_regsdab();
siproduct = (int64_t)ppc_result_a * (int64_t)ppc_result_b; siproduct = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
siproduct &= 4294967295; siproduct &= 4294967295;
ppc_result_d = (uint32_t)siproduct; ppc_result_d = (uint32_t)siproduct;
ppc_store_result_regd(); ppc_store_result_regd();
@@ -914,7 +914,7 @@ void ppc_mullw() {
void ppc_mullwdot() { void ppc_mullwdot() {
ppc_grab_regsdab(); ppc_grab_regsdab();
siproduct = (int64_t)ppc_result_a * (int64_t)ppc_result_b; siproduct = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
siproduct &= 4294967295; siproduct &= 4294967295;
ppc_result_d = (uint32_t)siproduct; ppc_result_d = (uint32_t)siproduct;
ppc_changecrf0(ppc_result_d); ppc_changecrf0(ppc_result_d);
@@ -923,9 +923,8 @@ void ppc_mullwdot() {
void ppc_mullwo() { void ppc_mullwo() {
ppc_grab_regsdab(); ppc_grab_regsdab();
siproduct = (int64_t)ppc_result_a * (int64_t)ppc_result_b; siproduct = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
siproduct &= 4294967295; if ((siproduct > 0xFFFFFFFFUL) || (siproduct > 0x7FFFFFFFUL)) {
if ((siproduct > 0xFFFFFFFFUL) | (siproduct > 0x7FFFFFFFUL)) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000; ppc_state.ppc_spr[SPR::XER] |= 0xC0000000;
} }
ppc_result_d = (uint32_t)siproduct; ppc_result_d = (uint32_t)siproduct;
@@ -934,9 +933,8 @@ void ppc_mullwo() {
void ppc_mullwodot() { void ppc_mullwodot() {
ppc_grab_regsdab(); ppc_grab_regsdab();
siproduct = (int64_t)ppc_result_a * (int64_t)ppc_result_b; siproduct = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)ppc_result_b;
siproduct &= 4294967295; if ((siproduct > 0xFFFFFFFFUL) || (siproduct > 0x7FFFFFFFUL)) {
if ((siproduct > 0xFFFFFFFFUL) | (siproduct > 0x7FFFFFFFUL)) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000; ppc_state.ppc_spr[SPR::XER] |= 0xC0000000;
} }
ppc_result_d = (uint32_t)siproduct; ppc_result_d = (uint32_t)siproduct;
@@ -946,7 +944,7 @@ void ppc_mullwodot() {
void ppc_mulli() { void ppc_mulli() {
ppc_grab_regsdasimm(); ppc_grab_regsdasimm();
int64_t siproduct = (int64_t)((ppc_result_a) * ((int64_t)simm)); int64_t siproduct = (int64_t)(int32_t)ppc_result_a * (int64_t)(int32_t)simm;
siproduct &= 4294967295; siproduct &= 4294967295;
ppc_result_d = (uint32_t)siproduct; ppc_result_d = (uint32_t)siproduct;
ppc_store_result_regd(); ppc_store_result_regd();