81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
#include <dynarec/cop/cop0instructions.hpp>
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#include <log.hpp>
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#include <Registers.hpp>
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namespace n64::JIT {
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void mtc0(n64::Registers& regs, u32 instr) {
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regs.cop0.SetReg32(RD(instr), regs.gpr[RT(instr)]);
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}
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void dmtc0(n64::Registers& regs, u32 instr) {
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regs.cop0.SetReg64(RD(instr), regs.gpr[RT(instr)]);
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}
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void mfc0(n64::Registers& regs, u32 instr) {
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regs.gpr[RT(instr)] = s32(regs.cop0.GetReg32(RD(instr)));
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}
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void dmfc0(n64::Registers& regs, u32 instr) {
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regs.gpr[RT(instr)] = s64(regs.cop0.GetReg64(RD(instr)));
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}
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void eret(n64::Registers& regs) {
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if(regs.cop0.status.erl) {
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regs.SetPC(regs.cop0.ErrorEPC);
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regs.cop0.status.erl = false;
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} else {
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regs.SetPC(regs.cop0.EPC);
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regs.cop0.status.exl = false;
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}
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regs.cop0.llbit = false;
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}
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void tlbr(n64::Registers& regs) {
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u8 Index = regs.cop0.index & 0b111111;
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if (Index >= 32) {
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Util::panic("TLBR with TLB index {}", Index);
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}
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TLBEntry entry = regs.cop0.tlb[Index];
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regs.cop0.entryHi.raw = entry.entryHi.raw;
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regs.cop0.entryLo0.raw = entry.entryLo0.raw & 0x3FFFFFFF;
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regs.cop0.entryLo1.raw = entry.entryLo1.raw & 0x3FFFFFFF;
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regs.cop0.entryLo0.g = entry.global;
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regs.cop0.entryLo1.g = entry.global;
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regs.cop0.pageMask.raw = entry.pageMask.raw;
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}
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void tlbw(n64::Registers& regs, int index_) {
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PageMask page_mask = regs.cop0.pageMask;
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u32 top = page_mask.mask & 0xAAA;
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page_mask.mask = top | (top >> 1);
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if(index_ >= 32) {
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Util::panic("TLBWI with TLB index {}", index_);
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}
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regs.cop0.tlb[index_].entryHi.raw = regs.cop0.entryHi.raw;
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regs.cop0.tlb[index_].entryHi.vpn2 &= ~page_mask.mask;
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regs.cop0.tlb[index_].entryLo0.raw = regs.cop0.entryLo0.raw & 0x03FFFFFE;
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regs.cop0.tlb[index_].entryLo1.raw = regs.cop0.entryLo1.raw & 0x03FFFFFE;
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regs.cop0.tlb[index_].pageMask.raw = page_mask.raw;
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regs.cop0.tlb[index_].global = regs.cop0.entryLo0.g && regs.cop0.entryLo1.g;
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regs.cop0.tlb[index_].initialized = true;
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}
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void tlbp(n64::Registers& regs) {
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int match = -1;
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TLBEntry* entry = TLBTryMatch(regs, regs.cop0.entryHi.raw, &match);
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if(entry && match >= 0) {
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regs.cop0.index = match;
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} else {
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regs.cop0.index = 0x80000000;
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}
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}
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} |