Macintosh-Tools/dingusppc
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Fix and refactor additions with OE=1.

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This commit is contained in:
Maxim Poliakovski 2020-02-03 19:42:33 +01:00
parent 4e4d0370be
commit 8c1c1e0a0d
2 changed files with 23 additions and 67 deletions
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86
cpu/ppc/ppcopcodes.cpp
View File

@ -167,36 +167,12 @@ void ppc_carry(uint32_t a, uint32_t b) {
//Affects the XER register's SO and OV Bits
void ppc_setsoov(uint32_t a, uint32_t b, uint32_t d) {
/*
if (d >= 0) {
if ((a > 0)& (b < 0)) {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
else {
ppc_state.ppc_spr[SPR::XER] |= 0x40000000UL;
ppc_state.ppc_spr[SPR::XER] |= 0x80000000UL;
}
}
else {
if ((a < 0) & (b > 0)) {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
else {
ppc_state.ppc_spr[SPR::XER] |= 0x40000000UL;
ppc_state.ppc_spr[SPR::XER] |= 0x80000000UL;
}
}
*/
if (d > a) {
inline void ppc_setsoov(uint32_t a, uint32_t b, uint32_t d) {
if ((a ^ b) & (a ^ d) & 0x80000000UL) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000UL;
}
else {
} else {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
}
/**
@ -249,24 +225,14 @@ void ppc_adddot() {
void ppc_addo() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
if ((((ppc_result_a ^ ppc_result_d) & (ppc_result_b ^ ppc_result_d)) >> 31) != 0) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000UL;
}
else {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_store_result_regd();
}
void ppc_addodot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
if ((((ppc_result_a ^ ppc_result_d) & (ppc_result_b ^ ppc_result_d)) >> 31) != 0) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000UL;
}
else {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
@ -289,12 +255,7 @@ void ppc_addcdot() {
void ppc_addco() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
if ((((ppc_result_a ^ ppc_result_d) & (ppc_result_b ^ ppc_result_d)) >> 31) != 0) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000UL;
}
else {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_carry(ppc_result_a, ppc_result_d);
ppc_store_result_regd();
}
@ -302,12 +263,7 @@ void ppc_addco() {
void ppc_addcodot() {
ppc_grab_regsdab();
ppc_result_d = ppc_result_a + ppc_result_b;
if ((((ppc_result_a ^ ppc_result_d) & (ppc_result_b ^ ppc_result_d)) >> 31) != 0) {
ppc_state.ppc_spr[SPR::XER] |= 0xC0000000UL;
}
else {
ppc_state.ppc_spr[SPR::XER] &= 0xBFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_carry(ppc_result_a, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
@ -350,7 +306,7 @@ void ppc_addeo() {
else {
ppc_state.ppc_spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, (ppc_result_b + xer_ca), ppc_result_d);
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_store_result_regd();
}
@ -364,7 +320,7 @@ void ppc_addeodot() {
else {
ppc_state.ppc_spr[SPR::XER] &= 0xDFFFFFFFUL;
}
ppc_setsoov(ppc_result_a, (ppc_result_b + xer_ca), ppc_result_d);
ppc_setsoov(ppc_result_a, ~ppc_result_b, ppc_result_d);
ppc_changecrf0(ppc_result_d);
ppc_store_result_regd();
}
@ -400,7 +356,7 @@ void ppc_addmeo() {
ppc_grab_regsda();
uint32_t xer_ca = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + xer_ca - 1;
ppc_setsoov(ppc_result_a, (xer_ca - 1), ppc_result_d);
ppc_setsoov(ppc_result_a, 0, ppc_result_d);
if (((xer_ca - 1) < 0xFFFFFFFFUL) | (ppc_result_d < ppc_result_a)) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
}
@ -414,7 +370,7 @@ void ppc_addmeodot() {
ppc_grab_regsda();
uint32_t xer_ca = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + xer_ca - 1;
ppc_setsoov(ppc_result_a, (xer_ca - 1), ppc_result_d);
ppc_setsoov(ppc_result_a, 0, ppc_result_d);
ppc_changecrf0(ppc_result_d);
if (((xer_ca - 1) < 0xFFFFFFFFUL) | (ppc_result_d < ppc_result_a)) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
@ -427,7 +383,7 @@ void ppc_addmeodot() {
void ppc_addze() {
ppc_grab_regsda();
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
if (ppc_result_d < ppc_result_a) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
@ -440,7 +396,7 @@ void ppc_addze() {
void ppc_addzedot() {
ppc_grab_regsda();
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
if (ppc_result_d < ppc_result_a) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
@ -454,9 +410,9 @@ void ppc_addzedot() {
void ppc_addzeo() {
ppc_grab_regsda();
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
ppc_setsoov(ppc_result_a, grab_xer, ppc_result_d);
ppc_setsoov(ppc_result_a, 0xFFFFFFFFUL, ppc_result_d);
if (ppc_result_d < ppc_result_a) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
}
@ -468,9 +424,9 @@ void ppc_addzeo() {
void ppc_addzeodot() {
ppc_grab_regsda();
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = ppc_result_a + grab_xer;
ppc_setsoov(ppc_result_a, grab_xer, ppc_result_d);
ppc_setsoov(ppc_result_a, 0xFFFFFFFFUL, ppc_result_d);
if (ppc_result_d < ppc_result_a) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
}
@ -588,7 +544,7 @@ void ppc_subfic() {
void ppc_subfe() {
ppc_grab_regsdab();
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
not_this = ~ppc_result_a;
ppc_result_d = not_this + ppc_result_b + (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
if (ppc_result_d <= (not_this + grab_xer)) {
@ -603,7 +559,7 @@ void ppc_subfe() {
void ppc_subfedot() {
ppc_grab_regsdab();
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
not_this = ~ppc_result_a;
ppc_result_d = not_this + ppc_result_b + grab_xer;
if (ppc_result_d <= (not_this + grab_xer)) {
@ -620,7 +576,7 @@ void ppc_subfedot() {
void ppc_subfme() {
ppc_grab_regsda();
not_this = ~ppc_result_a;
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = not_this + grab_xer - 1;
if (ppc_result_a || grab_xer) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;
@ -635,7 +591,7 @@ void ppc_subfme() {
void ppc_subfmedot() {
ppc_grab_regsda();
not_this = ~ppc_result_a;
uint32_t grab_xer = (ppc_state.ppc_spr[SPR::XER] & 0x20000000);
uint32_t grab_xer = !!(ppc_state.ppc_spr[SPR::XER] & 0x20000000);
ppc_result_d = not_this + grab_xer - 1;
if (ppc_result_d <= (not_this + grab_xer)) {
ppc_state.ppc_spr[SPR::XER] |= 0x20000000UL;

4
cpu/ppc/test/ppcinttests.csv
View File

@ -42,7 +42,7 @@ ADDCO.,0x7C632415,rD=0x00000001,rA=0x00000001,rB=0x00000000,XER=0x00000000,CR=0x
ADDCO.,0x7C632415,rD=0xFFFFFFFF,rA=0x00000000,rB=0xFFFFFFFF,XER=0x00000000,CR=0x80000000
ADDO,0x7C632614,rD=0x80000000,rA=0x7FFFFFFF,rB=0x00000001,XER=0xC0000000,CR=0x00000000
ADDO,0x7C632614,rD=0x80000001,rA=0x80000000,rB=0x00000001,XER=0x00000000,CR=0x00000000
ADDO,0x7C632614,rD=0x00000000,rA=0xFFFFFFFF,rB=0x00000001,XER=0x00000000,CR=0x00000000
ADDO,0x7C632614,rD=0x00000000,rA=0x80000000,rB=0x80000000,XER=0xC0000000,CR=0x00000000
ADDO,0x7C632614,rD=0x00000000,rA=0xFFFFFFFF,rB=0x00000001,XER=0x00000000,CR=0x00000000
ADDO,0x7C632614,rD=0xFFFFFFFE,rA=0xFFFFFFFF,rB=0xFFFFFFFF,XER=0x00000000,CR=0x00000000
ADDO,0x7C632614,rD=0x00000001,rA=0x00000001,rB=0x00000000,XER=0x00000000,CR=0x00000000
@ -70,7 +70,7 @@ ADDE.,0x7C632115,rD=0x00000001,rA=0x00000001,rB=0x00000000,XER=0x00000000,CR=0x4
ADDE.,0x7C632115,rD=0xFFFFFFFF,rA=0x00000000,rB=0xFFFFFFFF,XER=0x00000000,CR=0x80000000
ADDEO,0x7C632514,rD=0x80000000,rA=0x7FFFFFFF,rB=0x00000001,XER=0xC0000000,CR=0x00000000
ADDEO,0x7C632514,rD=0x80000001,rA=0x80000000,rB=0x00000001,XER=0x00000000,CR=0x00000000
ADDEO,0x7C632514,rD=0x00000000,rA=0xFFFFFFFF,rB=0x00000001,XER=0x20000000,CR=0x00000000
ADDEO,0x7C632514,rD=0x00000000,rA=0x80000000,rB=0x80000000,XER=0xE0000000,CR=0x00000000
ADDEO,0x7C632514,rD=0x00000000,rA=0xFFFFFFFF,rB=0x00000001,XER=0x20000000,CR=0x00000000
ADDEO,0x7C632514,rD=0xFFFFFFFE,rA=0xFFFFFFFF,rB=0xFFFFFFFF,XER=0x20000000,CR=0x00000000
ADDEO,0x7C632514,rD=0x00000001,rA=0x00000001,rB=0x00000000,XER=0x00000000,CR=0x00000000

1 ADD 0x7C632214 rD=0x80000000 rA=0x7FFFFFFF rB=0x00000001 XER=0x00000000 CR=0x00000000
42 ADDCO. 0x7C632415 rD=0xFFFFFFFF rA=0x00000000 rB=0xFFFFFFFF XER=0x00000000 CR=0x80000000
43 ADDO 0x7C632614 rD=0x80000000 rA=0x7FFFFFFF rB=0x00000001 XER=0xC0000000 CR=0x00000000
44 ADDO 0x7C632614 rD=0x80000001 rA=0x80000000 rB=0x00000001 XER=0x00000000 CR=0x00000000
45 ADDO 0x7C632614 rD=0x00000000 rA=0xFFFFFFFF rA=0x80000000 rB=0x00000001 rB=0x80000000 XER=0x00000000 XER=0xC0000000 CR=0x00000000
46 ADDO 0x7C632614 rD=0x00000000 rA=0xFFFFFFFF rB=0x00000001 XER=0x00000000 CR=0x00000000
47 ADDO 0x7C632614 rD=0xFFFFFFFE rA=0xFFFFFFFF rB=0xFFFFFFFF XER=0x00000000 CR=0x00000000
48 ADDO 0x7C632614 rD=0x00000001 rA=0x00000001 rB=0x00000000 XER=0x00000000 CR=0x00000000
70 ADDE. 0x7C632115 rD=0xFFFFFFFF rA=0x00000000 rB=0xFFFFFFFF XER=0x00000000 CR=0x80000000
71 ADDEO 0x7C632514 rD=0x80000000 rA=0x7FFFFFFF rB=0x00000001 XER=0xC0000000 CR=0x00000000
72 ADDEO 0x7C632514 rD=0x80000001 rA=0x80000000 rB=0x00000001 XER=0x00000000 CR=0x00000000
73 ADDEO 0x7C632514 rD=0x00000000 rA=0xFFFFFFFF rA=0x80000000 rB=0x00000001 rB=0x80000000 XER=0x20000000 XER=0xE0000000 CR=0x00000000
74 ADDEO 0x7C632514 rD=0x00000000 rA=0xFFFFFFFF rB=0x00000001 XER=0x20000000 CR=0x00000000
75 ADDEO 0x7C632514 rD=0xFFFFFFFE rA=0xFFFFFFFF rB=0xFFFFFFFF XER=0x20000000 CR=0x00000000
76 ADDEO 0x7C632514 rD=0x00000001 rA=0x00000001 rB=0x00000000 XER=0x00000000 CR=0x00000000