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Minor clean-up for branching instructions

This commit is contained in:
dingusdev 2024-02-12 20:59:04 -07:00
parent 8a800062dd
commit ec23a532f6
1 changed files with 10 additions and 10 deletions
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20
cpu/ppc/ppcopcodes.cpp
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@ -1122,15 +1122,15 @@ void dppc_interpreter::ppc_extsh() {
void dppc_interpreter::ppc_b() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFCUL);
int32_t adr_li = (quick_test < 0x2000000UL) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = (uint32_t)(ppc_state.pc + adr_li);
ppc_next_instruction_address = uint32_t(ppc_state.pc + adr_li);
exec_flags = EXEF_BRANCH;
}
void dppc_interpreter::ppc_bl() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFCUL);
int32_t adr_li = (quick_test < 0x2000000UL) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = (uint32_t)(ppc_state.pc + adr_li);
ppc_state.spr[SPR::LR] = (uint32_t)(ppc_state.pc + 4);
ppc_next_instruction_address = uint32_t(ppc_state.pc + adr_li);
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
exec_flags = EXEF_BRANCH;
}
@ -1145,7 +1145,7 @@ void dppc_interpreter::ppc_bla() {
uint32_t quick_test = (ppc_cur_instruction & 0x03FFFFFCUL);
int32_t adr_li = (quick_test < 0x2000000UL) ? quick_test : (0xFC000000UL + quick_test);
ppc_next_instruction_address = adr_li;
ppc_state.spr[SPR::LR] = ppc_state.pc + 4;
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
exec_flags = EXEF_BRANCH;
}
@ -1154,7 +1154,7 @@ void dppc_interpreter::ppc_bc() {
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
int32_t br_bd = int32_t(int16_t(ppc_cur_instruction & 0xFFFCUL));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
@ -1173,7 +1173,7 @@ void dppc_interpreter::ppc_bca() {
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
int32_t br_bd = int32_t(int16_t(ppc_cur_instruction & 0xFFFCUL));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
@ -1192,7 +1192,7 @@ void dppc_interpreter::ppc_bcl() {
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
int32_t br_bd = int32_t(int16_t(ppc_cur_instruction & 0xFFFCUL));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
@ -1212,7 +1212,7 @@ void dppc_interpreter::ppc_bcla() {
uint32_t cnd_ok;
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
int32_t br_bd = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFC));
int32_t br_bd = int32_t(int16_t(ppc_cur_instruction & 0xFFFCUL));
if (!(br_bo & 0x04)) {
(ppc_state.spr[SPR::CTR])--; /* decrement CTR */
@ -1231,7 +1231,7 @@ void dppc_interpreter::ppc_bcctr() {
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
uint32_t cnd_ok = (br_bo & 0x10) |
uint32_t cnd_ok = (br_bo & 0x10) | \
(!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (cnd_ok) {
@ -1244,7 +1244,7 @@ void dppc_interpreter::ppc_bcctrl() {
uint32_t br_bo = (ppc_cur_instruction >> 21) & 31;
uint32_t br_bi = (ppc_cur_instruction >> 16) & 31;
uint32_t cnd_ok = (br_bo & 0x10) |
uint32_t cnd_ok = (br_bo & 0x10) | \
(!(ppc_state.cr & (0x80000000UL >> br_bi)) == !(br_bo & 0x08));
if (cnd_ok) {