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Division Ops Fixes WIP

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dingusdev 2020-01-31 21:06:06 -07:00
parent 8c10004f52
commit 0b2de4ac4c
1 changed files with 11 additions and 13 deletions
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24
cpu/ppc/ppcopcodes.cpp
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@ -826,7 +826,7 @@ void ppc_negodot() {
ppc_grab_regsda();
ppc_result_d = ~(ppc_result_a)+1;
if (ppc_result_a == 0x80000000)
ppc_state.ppc_spr[SPR::XER] |= 0x40000000;
ppc_state.ppc_spr[SPR::XER] |= 0xc0000000;
else
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFF;
ppc_changecrf0(ppc_result_d);
@ -969,7 +969,7 @@ void ppc_divw() {
}
default:
sidiv_result = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
ppc_result_d = (uint32_t)sidiv_result;
ppc_result_d = sidiv_result;
ppc_store_result_regd();
}
}
@ -994,7 +994,7 @@ void ppc_divwdot() {
}
default:
sidiv_result = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
ppc_result_d = (uint32_t)sidiv_result;
ppc_result_d = sidiv_result;
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
@ -1012,15 +1012,15 @@ void ppc_divwo() {
return;
case 0xFFFFFFFF:
if (ppc_result_a == 0x80000000) {
ppc_result_d = 0;
ppc_state.ppc_cr |= 0x10000000;
ppc_result_d = 0xFFFFFFFF;
ppc_store_result_regd();
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000;
return;
}
default:
ppc_setsoov(ppc_result_a, ppc_result_b, ppc_result_d);
sidiv_result = (int32_t)ppc_result_a / (int32_t)ppc_result_b;
ppc_result_d = (uint32_t)sidiv_result;
ppc_result_d = sidiv_result;
ppc_store_result_regd();
}
}
@ -1033,14 +1033,13 @@ void ppc_divwodot() {
case 0:
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr |= 0xC0000000;
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000;
ppc_state.ppc_cr |= 0x30000000;
return;
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:
@ -1076,7 +1075,7 @@ void ppc_divwudot() {
case 0:
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
ppc_state.ppc_cr |= 0x20000000;
return;
default:
uidiv_result = ppc_result_a / ppc_result_b;
@ -1093,7 +1092,7 @@ void ppc_divwuo() {
switch (ppc_result_b) {
case 0:
ppc_result_d = 0;
ppc_state.ppc_cr |= 0x10000000;
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000;
ppc_store_result_regd();
return;
default:
@ -1112,8 +1111,7 @@ void ppc_divwuodot() {
case 0:
ppc_result_d = 0;
ppc_store_result_regd();
ppc_state.ppc_cr &= 0x1FFFFFFF;
ppc_state.ppc_cr |= 0x10000000;
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000;
return;
default:
ppc_setsoov(ppc_result_a, ppc_result_b, ppc_result_d);