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ppcopcodes: Use macro to grab instruction fields.

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joevt 2024-04-08 22:07:23 -07:00 committed by dingusdev
parent 29a832c68d
commit 1e50d88183
1 changed files with 8 additions and 9 deletions
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17
cpu/ppc/ppcopcodes.cpp
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@ -888,8 +888,8 @@ static void update_decrementer(uint32_t val) {
} }
void dppc_interpreter::ppc_mfspr() { void dppc_interpreter::ppc_mfspr() {
uint32_t ref_spr = (((ppc_cur_instruction >> 11) & 0x1F) << 5) | ppc_grab_dab(ppc_cur_instruction);
((ppc_cur_instruction >> 16) & 0x1F); uint32_t ref_spr = (reg_b << 5) | reg_a;
#ifdef CPU_PROFILING #ifdef CPU_PROFILING
if (ref_spr > 31) { if (ref_spr > 31) {
@ -911,12 +911,12 @@ void dppc_interpreter::ppc_mfspr() {
break; break;
} }
ppc_state.gpr[(ppc_cur_instruction >> 21) & 0x1F] = ppc_state.spr[ref_spr]; ppc_state.gpr[reg_d] = ppc_state.spr[ref_spr];
} }
void dppc_interpreter::ppc_mtspr() { void dppc_interpreter::ppc_mtspr() {
uint32_t ref_spr = (((ppc_cur_instruction >> 11) & 0x1F) << 5) | ppc_grab_dab(ppc_cur_instruction);
((ppc_cur_instruction >> 16) & 0x1F); uint32_t ref_spr = (reg_b << 5) | reg_a;
#ifdef CPU_PROFILING #ifdef CPU_PROFILING
if (ref_spr > 31) { if (ref_spr > 31) {
@ -930,7 +930,7 @@ void dppc_interpreter::ppc_mtspr() {
return; return;
} }
uint32_t val = ppc_state.gpr[(ppc_cur_instruction >> 21) & 0x1F]; uint32_t val = ppc_state.gpr[reg_d];
ppc_state.spr[ref_spr] = val; ppc_state.spr[ref_spr] = val;
switch (ref_spr) { switch (ref_spr) {
@ -980,9 +980,8 @@ void dppc_interpreter::ppc_mtspr() {
} }
void dppc_interpreter::ppc_mftb() { void dppc_interpreter::ppc_mftb() {
uint32_t ref_spr = (((ppc_cur_instruction >> 11) & 0x1F) << 5) | ppc_grab_dab(ppc_cur_instruction);
((ppc_cur_instruction >> 16) & 0x1F); uint32_t ref_spr = (reg_b << 5) | reg_a;
int reg_d = (ppc_cur_instruction >> 21) & 0x1F;
uint64_t tbr_value = calc_tbr_value(); uint64_t tbr_value = calc_tbr_value();