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Minor checks for Data Cache opcodes and LMW

This commit is contained in:
dingusdev 2023-09-04 07:21:00 -07:00
parent a7ef177164
commit fd6327ab62
1 changed files with 21 additions and 3 deletions
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24
cpu/ppc/ppcopcodes.cpp
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@ -1460,6 +1460,9 @@ void dppc_interpreter::ppc_icbi() {
void dppc_interpreter::ppc_dcbf() {
/* placeholder */
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
LOG_F(9, "DCBF attempted; EA: %d", ppc_effective_address);
}
void dppc_interpreter::ppc_dcbi() {
@ -1467,10 +1470,18 @@ void dppc_interpreter::ppc_dcbi() {
num_supervisor_instrs++;
#endif
/* placeholder */
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
if (ppc_state.msr & 0x100000) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x100000);
}
LOG_F(WARNING, "DCBI attempted; EA: %d", ppc_effective_address);
}
void dppc_interpreter::ppc_dcbst() {
/* placeholder */
ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
LOG_F(WARNING, "DCBST attempted; EA: %d", ppc_effective_address);
}
void dppc_interpreter::ppc_dcbt() {
@ -2010,11 +2021,18 @@ void dppc_interpreter::ppc_lmw() {
ppc_grab_regsda();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a > 0) ? ppc_result_a : 0;
if (ppc_state.spr[PVR] != MPC601) {
if (reg_d <= reg_a) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x80000);
}
}
// How many words to load in memory - using a do-while for this
do {
//ppc_state.gpr[reg_d] = mem_grab_dword(ppc_effective_address);
ppc_state.gpr[reg_d] = mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_effective_address += 4;
if (reg_d != reg_a){
ppc_state.gpr[reg_d] = mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_effective_address += 4;
}
reg_d++;
} while (reg_d < 32);
}