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SimoneN64
2024-05-21 22:46:08 +02:00
parent 89aa79fa2a
commit a35fac4a4e
9 changed files with 368 additions and 36 deletions
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59
src/backend/core/JIT.cpp
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@@ -2,7 +2,10 @@
#include <jit/helpers.hpp>
namespace n64 {
JIT::JIT(ParallelRDP& parallel) : mem(regs, parallel) { }
JIT::JIT(ParallelRDP& parallel) : mem(regs, parallel) {
regs.gpr[0] = 0;
regs.gprIsConstant[0] = true;
}
bool JIT::ShouldServiceInterrupt() {
bool interrupts_pending = (regs.cop0.status.im & regs.cop0.cause.interruptPending) != 0;
@@ -24,46 +27,40 @@ void JIT::CheckCompareInterrupt() {
}
int JIT::Step() {
CheckCompareInterrupt();
u32 instruction;
s64 pc = regs.pc;
regs.prevDelaySlot = regs.delaySlot;
regs.delaySlot = false;
do {
//CheckCompareInterrupt();
if (check_address_error(0b11, u64(regs.pc))) [[unlikely]] {
regs.cop0.HandleTLBException(regs.pc);
regs.cop0.FireException(ExceptionCode::AddressErrorLoad, 0, regs.pc);
return 1;
}
//regs.prevDelaySlot = regs.delaySlot;
//regs.delaySlot = false;
u32 paddr = 0;
if (!regs.cop0.MapVAddr(Cop0::LOAD, regs.pc, paddr)) {
regs.cop0.HandleTLBException(regs.pc);
regs.cop0.FireException(regs.cop0.GetTLBExceptionCode(regs.cop0.tlbError, Cop0::LOAD), 0, regs.pc);
return 1;
}
u32 instruction = mem.Read<u32>(regs, paddr);
while (!InstrEndsBlock(instr)) {
if (!regs.cop0.MapVAddr(Cop0::LOAD, regs.pc, paddr)) {
regs.cop0.HandleTLBException(regs.pc);
regs.cop0.FireException(regs.cop0.GetTLBExceptionCode(regs.cop0.tlbError, Cop0::LOAD), 0, regs.pc);
/*if (check_address_error(0b11, u64(pc))) [[unlikely]] {
regs.cop0.HandleTLBException(pc);
regs.cop0.FireException(ExceptionCode::AddressErrorLoad, 0, pc);
return 1;
}*/
u32 paddr = 0;
if (!regs.cop0.MapVAddr(Cop0::LOAD, pc, paddr)) {
/*regs.cop0.HandleTLBException(pc);
regs.cop0.FireException(regs.cop0.GetTLBExceptionCode(regs.cop0.tlbError, Cop0::LOAD), 0, pc);
return 1;*/
Util::panic("[JIT]: Unhandled exception TLB exception {} when retrieving PC physical address!", regs.cop0.GetTLBExceptionCode(regs.cop0.tlbError, Cop0::LOAD));
}
instruction = mem.Read<u32>(regs, paddr);
}
if(ShouldServiceInterrupt()) {
regs.cop0.FireException(ExceptionCode::Interrupt, 0, regs.pc);
return 1;
}
/*if(ShouldServiceInterrupt()) {
regs.cop0.FireException(ExceptionCode::Interrupt, 0, regs.pc);
return 1;
}*/
regs.oldPC = regs.pc;
regs.pc = regs.nextPC;
regs.nextPC += 4;
pc += 4;
Exec(instruction);
//Exec(instruction);
} while (!InstrEndsBlock(instruction));
return 1;
}