83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
#include <core/registers/Cop0.hpp>
|
|
#include <core/registers/Registers.hpp>
|
|
#include <log.hpp>
|
|
|
|
namespace n64 {
|
|
void Cop0::mtc0(u32 instr) {
|
|
SetReg32(RD(instr), regs.gpr[RT(instr)]);
|
|
}
|
|
|
|
void Cop0::dmtc0(u32 instr) {
|
|
SetReg64(RD(instr), regs.gpr[RT(instr)]);
|
|
}
|
|
|
|
void Cop0::mfc0(u32 instr) {
|
|
regs.gpr[RT(instr)] = s32(GetReg32(RD(instr)));
|
|
}
|
|
|
|
void Cop0::dmfc0(u32 instr) const {
|
|
regs.gpr[RT(instr)] = s64(GetReg64(RD(instr)));
|
|
}
|
|
|
|
void Cop0::eret() {
|
|
if(status.erl) {
|
|
regs.SetPC64(ErrorEPC);
|
|
status.erl = false;
|
|
} else {
|
|
regs.SetPC64(EPC);
|
|
status.exl = false;
|
|
}
|
|
regs.cop0.Update();
|
|
llbit = false;
|
|
}
|
|
|
|
|
|
void Cop0::tlbr() {
|
|
if (index.i >= 32) {
|
|
Util::panic("TLBR with TLB index {}", index.i);
|
|
}
|
|
|
|
TLBEntry entry = tlb[index.i];
|
|
|
|
entryHi.raw = entry.entryHi.raw;
|
|
entryLo0.raw = entry.entryLo0.raw & 0x3FFFFFFF;
|
|
entryLo1.raw = entry.entryLo1.raw & 0x3FFFFFFF;
|
|
|
|
entryLo0.g = entry.global;
|
|
entryLo1.g = entry.global;
|
|
pageMask.raw = entry.pageMask.raw;
|
|
}
|
|
|
|
void Cop0::tlbw(int index_) {
|
|
PageMask page_mask{};
|
|
page_mask = pageMask;
|
|
u32 top = page_mask.mask & 0xAAA;
|
|
page_mask.mask = top | (top >> 1);
|
|
|
|
if(index_ >= 32) {
|
|
Util::panic("TLBWI with TLB index {}", index_);
|
|
}
|
|
|
|
tlb[index_].entryHi.raw = entryHi.raw;
|
|
tlb[index_].entryHi.vpn2 &= ~page_mask.mask;
|
|
|
|
tlb[index_].entryLo0.raw = entryLo0.raw & 0x03FFFFFE;
|
|
tlb[index_].entryLo1.raw = entryLo1.raw & 0x03FFFFFE;
|
|
tlb[index_].pageMask.raw = page_mask.raw;
|
|
|
|
tlb[index_].global = entryLo0.g && entryLo1.g;
|
|
tlb[index_].initialized = true;
|
|
}
|
|
|
|
void Cop0::tlbp() {
|
|
int match = -1;
|
|
TLBEntry* entry = TLBTryMatch(entryHi.raw, &match);
|
|
if(entry && match >= 0) {
|
|
index.raw = match;
|
|
} else {
|
|
index.raw = 0;
|
|
index.p = 1;
|
|
}
|
|
}
|
|
|
|
} |