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ppcexec: Make illegal operations per CPU model.

This commit is contained in:
joevt 2023-12-17 05:26:26 -08:00 committed by dingusdev
parent 52dfc0cf93
commit ddb5259464
2 changed files with 15 additions and 0 deletions
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1
cpu/ppc/ppcemu.h
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@ -125,6 +125,7 @@ enum PPC_VER : uint32_t {
MPC603EV = 0x00070101,
MPC750 = 0x00080200,
MPC604E = 0x00090202,
MPC970MP = 0x00440100,
};
/**

14
cpu/ppc/ppcexec.cpp
View File

@ -773,6 +773,20 @@ void ppc_cpu_init(MemCtrlBase* mem_ctrl, uint32_t cpu_version, uint64_t tb_freq)
initialize_ppc_opcode_tables();
if (cpu_version == PPC_VER::MPC601) {
SubOpcode31Grabber[370] = ppc_illegalop; // tlbia
SubOpcode31Grabber[371] = ppc_illegalop; // mftb
SubOpcode59Grabber[24] = ppc_illegalop; // fres
for (int i = 0; i < 1024; i += 32) {
SubOpcode63Grabber[i + 23] = ppc_illegalop; // fsel
}
SubOpcode63Grabber[26] = ppc_illegalop; // frsqrte;
}
if (cpu_version != PPC_VER::MPC970MP) {
SubOpcode59Grabber[22] = ppc_illegalop; // fsqrts
SubOpcode63Grabber[22] = ppc_illegalop; // fsqrt
}
// initialize emulator timers
TimerManager::get_instance()->set_time_now_cb(&get_virt_time_ns);
TimerManager::get_instance()->set_notify_changes_cb(&force_cycle_counter_reload);