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interpreter_ops.c
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interpreter_ops.c
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/*
* Project 64 - A Nintendo 64 emulator.
*
* (c) Copyright 2001 zilmar ([email protected]) and
* Jabo ([email protected]).
*
* pj64 homepage: www.pj64.net
*
* Permission to use, copy, modify and distribute Project64 in both binary and
* source form, for non-commercial purposes, is hereby granted without fee,
* providing that this license information and copyright notice appear with
* all copies and any derived work.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event shall the authors be held liable for any damages
* arising from the use of this software.
*
* Project64 is freeware for PERSONAL USE only. Commercial users should
* seek permission of the copyright holders first. Commercial use includes
* charging money for Project64 or software derived from Project64.
*
* The copyright holders request that bug fixes and improvements to the code
* should be forwarded to them so if they want them.
*
*/
#include <stdio.h>
#include <math.h>
#include <float.h>
#include <fpu_control.h>
#include "main.h"
#include "cpu.h"
#include "exception.h"
#include "memory.h"
#include "tlb.h"
#include "interpreter_cpu.h"
#include "interpreter_ops.h"
#include "registers.h"
int32_t RoundingModel = _FPU_RC_NEAREST;
#define ADDRESS_ERROR_EXCEPTION(Address,FromRead) \
DoAddressError(NextInstruction == JUMP,Address,FromRead);\
NextInstruction = JUMP;\
JumpToLocation = PROGRAM_COUNTER;\
return;
//#define TEST_COP1_USABLE_EXCEPTION
#define TEST_COP1_USABLE_EXCEPTION \
if ((STATUS_REGISTER & STATUS_CU1) == 0) {\
DoCopUnusableException(NextInstruction == JUMP,1);\
NextInstruction = JUMP;\
JumpToLocation = PROGRAM_COUNTER;\
return;\
}
#define TLB_READ_EXCEPTION(Address) \
DoTLBMiss(NextInstruction == JUMP,Address);\
NextInstruction = JUMP;\
JumpToLocation = PROGRAM_COUNTER;\
return;
/************************* OpCode functions *************************/
void r4300i_J (void)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = (PROGRAM_COUNTER & 0xF0000000) + (Opcode.target << 2);
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,0,0);
}
void r4300i_JAL (void)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = (PROGRAM_COUNTER & 0xF0000000) + (Opcode.target << 2);
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,0,0);
GPR[31].DW= (int32_t)(PROGRAM_COUNTER + 8);
}
void r4300i_BEQ (void)
{
NextInstruction = DELAY_SLOT;
if (GPR[Opcode.rs].DW == GPR[Opcode.rt].DW)
{
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,Opcode.rt);
}
else
{
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_BNE (void)
{
NextInstruction = DELAY_SLOT;
if (GPR[Opcode.rs].DW != GPR[Opcode.rt].DW)
{
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,Opcode.rt);
}
else
{
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_BLEZ (void)
{
NextInstruction = DELAY_SLOT;
if (GPR[Opcode.rs].DW <= 0)
{
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,0);
}
else
{
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_BGTZ (void)
{
NextInstruction = DELAY_SLOT;
if (GPR[Opcode.rs].DW > 0)
{
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,0);
}
else
{
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_ADDI (void)
{
if (Opcode.rt == 0)
{
return;
}
GPR[Opcode.rt].DW = (GPR[Opcode.rs].W[0] + ((int16_t)Opcode.immediate));
}
void r4300i_ADDIU (void)
{
GPR[Opcode.rt].DW = (GPR[Opcode.rs].W[0] + ((int16_t)Opcode.immediate));
}
void r4300i_SLTI (void)
{
if (GPR[Opcode.rs].DW < (int64_t)((int16_t)Opcode.immediate))
{
GPR[Opcode.rt].DW = 1;
}
else
{
GPR[Opcode.rt].DW = 0;
}
}
void r4300i_SLTIU (void)
{
int32_t imm32 = (int16_t)Opcode.immediate;
int64_t imm64;
imm64 = imm32;
GPR[Opcode.rt].DW = GPR[Opcode.rs].UDW < (uint64_t)imm64?1:0;
}
void r4300i_ANDI (void)
{
GPR[Opcode.rt].DW = GPR[Opcode.rs].DW & Opcode.immediate;
}
void r4300i_ORI (void)
{
GPR[Opcode.rt].DW = GPR[Opcode.rs].DW | Opcode.immediate;
}
void r4300i_XORI (void)
{
GPR[Opcode.rt].DW = GPR[Opcode.rs].DW ^ Opcode.immediate;
}
void r4300i_LUI (void)
{
if (Opcode.rt == 0)
{
return;
}
GPR[Opcode.rt].DW = (int32_t)((int16_t)Opcode.offset << 16);
}
void r4300i_BEQL (void)
{
if (GPR[Opcode.rs].DW == GPR[Opcode.rt].DW)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,Opcode.rt);
}
else
{
NextInstruction = JUMP;
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_BNEL (void)
{
if (GPR[Opcode.rs].DW != GPR[Opcode.rt].DW)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,Opcode.rt);
}
else
{
NextInstruction = JUMP;
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_BLEZL (void)
{
if (GPR[Opcode.rs].DW <= 0)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,0);
}
else
{
NextInstruction = JUMP;
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_BGTZL (void)
{
if (GPR[Opcode.rs].DW > 0)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = PROGRAM_COUNTER + ((int16_t)Opcode.offset << 2) + 4;
TestInterpreterJump(PROGRAM_COUNTER,JumpToLocation,Opcode.rs,0);
}
else
{
NextInstruction = JUMP;
JumpToLocation = PROGRAM_COUNTER + 8;
}
}
void r4300i_DADDIU (void)
{
GPR[Opcode.rt].DW = GPR[Opcode.rs].DW + (int64_t)((int16_t)Opcode.immediate);
}
uint64_t LDL_MASK[8] = { 0ULL,0xFFULL,0xFFFFULL,0xFFFFFFULL,0xFFFFFFFFULL,0xFFFFFFFFFFULL, 0xFFFFFFFFFFFFULL, 0xFFFFFFFFFFFFFFULL };
int32_t LDL_SHIFT[8] = { 0, 8, 16, 24, 32, 40, 48, 56 };
void r4300i_LDL (void)
{
uint32_t Offset, Address;
uint64_t Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 7;
if (!r4300i_LD_VAddr((Address & ~7),&Value))
{
return;
}
GPR[Opcode.rt].DW = GPR[Opcode.rt].DW & LDL_MASK[Offset];
GPR[Opcode.rt].DW += Value << LDL_SHIFT[Offset];
}
uint64_t LDR_MASK[8] = { 0xFFFFFFFFFFFFFF00ULL, 0xFFFFFFFFFFFF0000ULL,
0xFFFFFFFFFF000000ULL, 0xFFFFFFFF00000000ULL,
0xFFFFFF0000000000ULL, 0xFFFF000000000000ULL,
0xFF00000000000000ULL, 0
};
int32_t LDR_SHIFT[8] = { 56, 48, 40, 32, 24, 16, 8, 0 };
void r4300i_LDR (void)
{
uint32_t Offset, Address;
uint64_t Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 7;
if (!r4300i_LD_VAddr((Address & ~7),&Value))
{
return;
}
GPR[Opcode.rt].DW = GPR[Opcode.rt].DW & LDR_MASK[Offset];
GPR[Opcode.rt].DW += Value >> LDR_SHIFT[Offset];
}
void r4300i_LB (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if (Opcode.rt == 0)
{
return;
}
if (!r4300i_LB_VAddr(Address,&GPR[Opcode.rt].UB[0]))
{
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].DW = GPR[Opcode.rt].B[0];
}
}
void r4300i_LH (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 1) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (!r4300i_LH_VAddr(Address,&GPR[Opcode.rt].UHW[0]))
{
//if (ShowTLBMisses) {
DisplayError("LH TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].DW = GPR[Opcode.rt].HW[0];
}
}
uint32_t LWL_MASK[4] = { 0,0xFF,0xFFFF,0xFFFFFF };
int32_t LWL_SHIFT[4] = { 0, 8, 16, 24};
void r4300i_LWL (void)
{
uint32_t Offset, Address, Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 3;
if (!r4300i_LW_VAddr((Address & ~3),&Value))
{
return;
}
GPR[Opcode.rt].DW = (int32_t)(GPR[Opcode.rt].W[0] & LWL_MASK[Offset]);
GPR[Opcode.rt].DW += (int32_t)(Value << LWL_SHIFT[Offset]);
}
void r4300i_LW (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if (Opcode.rt == 0)
{
return;
}
if (!r4300i_LW_VAddr(Address,&GPR[Opcode.rt].UW[0]))
{
//if (ShowTLBMisses) {
printf("LW TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].DW = GPR[Opcode.rt].W[0];
}
}
void r4300i_LBU (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if (!r4300i_LB_VAddr(Address,&GPR[Opcode.rt].UB[0]))
{
//if (ShowTLBMisses) {
DisplayError("LBU TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].UDW = GPR[Opcode.rt].UB[0];
}
}
void r4300i_LHU (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 1) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (!r4300i_LH_VAddr(Address,&GPR[Opcode.rt].UHW[0]))
{
//if (ShowTLBMisses) {
DisplayError("LHU TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].UDW = GPR[Opcode.rt].UHW[0];
}
}
uint32_t LWR_MASK[4] = { 0xFFFFFF00, 0xFFFF0000, 0xFF000000, 0 };
int32_t LWR_SHIFT[4] = { 24, 16 ,8, 0 };
void r4300i_LWR (void)
{
uint32_t Offset, Address, Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 3;
if (!r4300i_LW_VAddr((Address & ~3),&Value))
{
return;
}
GPR[Opcode.rt].DW = (int32_t)(GPR[Opcode.rt].W[0] & LWR_MASK[Offset]);
GPR[Opcode.rt].DW += (int32_t)(Value >> LWR_SHIFT[Offset]);
}
void r4300i_LWU (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 3) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (Opcode.rt == 0)
{
return;
}
if (!r4300i_LW_VAddr(Address,&GPR[Opcode.rt].UW[0]))
{
//if (ShowTLBMisses) {
DisplayError("LWU TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].UDW = GPR[Opcode.rt].UW[0];
}
}
void r4300i_SB (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if (!r4300i_SB_VAddr(Address,GPR[Opcode.rt].UB[0]))
{
}
}
void r4300i_SH (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 1) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,0);
}
if (!r4300i_SH_VAddr(Address,GPR[Opcode.rt].UHW[0]))
{
}
}
uint32_t SWL_MASK[4] = { 0,0xFF000000,0xFFFF0000,0xFFFFFF00 };
int32_t SWL_SHIFT[4] = { 0, 8, 16, 24 };
void r4300i_SWL (void)
{
uint32_t Offset, Address, Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 3;
if (!r4300i_LW_VAddr((Address & ~3),&Value))
{
return;
}
Value &= SWL_MASK[Offset];
Value += GPR[Opcode.rt].UW[0] >> SWL_SHIFT[Offset];
if (!r4300i_SW_VAddr((Address & ~0x03),Value))
{
}
}
void r4300i_SW (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 3) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,0);
}
if (!r4300i_SW_VAddr(Address,GPR[Opcode.rt].UW[0]))
{
DisplayError("SW TLB: %X",Address);
}
}
uint64_t SDL_MASK[8] = { 0,0xFF00000000000000ULL,
0xFFFF000000000000ULL,
0xFFFFFF0000000000ULL,
0xFFFFFFFF00000000ULL,
0xFFFFFFFFFF000000ULL,
0xFFFFFFFFFFFF0000ULL,
0xFFFFFFFFFFFFFF00ULL
};
int32_t SDL_SHIFT[8] = { 0, 8, 16, 24, 32, 40, 48, 56 };
void r4300i_SDL (void)
{
uint32_t Offset, Address;
uint64_t Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 7;
if (!r4300i_LD_VAddr((Address & ~7),&Value))
{
return;
}
Value &= SDL_MASK[Offset];
Value += GPR[Opcode.rt].UDW >> SDL_SHIFT[Offset];
if (!r4300i_SD_VAddr((Address & ~7),Value))
{
}
}
uint64_t SDR_MASK[8] = { 0x00FFFFFFFFFFFFFFULL,
0x0000FFFFFFFFFFFFULL,
0x000000FFFFFFFFFFULL,
0x00000000FFFFFFFFULL,
0x0000000000FFFFFFULL,
0x000000000000FFFFULL,
0x00000000000000FFULL,
0x0000000000000000ULL
};
int32_t SDR_SHIFT[8] = { 56,48,40,32,24,16,8,0 };
void r4300i_SDR (void)
{
uint32_t Offset, Address;
uint64_t Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 7;
if (!r4300i_LD_VAddr((Address & ~7),&Value))
{
return;
}
Value &= SDR_MASK[Offset];
Value += GPR[Opcode.rt].UDW << SDR_SHIFT[Offset];
if (!r4300i_SD_VAddr((Address & ~7),Value))
{
}
}
uint32_t SWR_MASK[4] = { 0x00FFFFFF,0x0000FFFF,0x000000FF,0x00000000 };
int32_t SWR_SHIFT[4] = { 24, 16 , 8, 0 };
void r4300i_SWR (void)
{
uint32_t Offset, Address, Value;
Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
Offset = Address & 3;
if (!r4300i_LW_VAddr((Address & ~3),&Value))
{
return;
}
Value &= SWR_MASK[Offset];
Value += GPR[Opcode.rt].UW[0] << SWR_SHIFT[Offset];
if (!r4300i_SW_VAddr((Address & ~0x03),Value))
{
}
}
void r4300i_CACHE (void)
{
}
void r4300i_LL (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
uintptr_t ll = 0;
if ((Address & 3) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (Opcode.rt == 0)
{
return;
}
if (!r4300i_LW_VAddr(Address,&GPR[Opcode.rt].UW[0]))
{
//if (ShowTLBMisses) {
DisplayError("LW TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
else
{
GPR[Opcode.rt].DW = GPR[Opcode.rt].W[0];
}
LLBit = 1;
LLAddr = Address;
ll = LLAddr;
TranslateVaddr(&ll);
LLAddr = ll;
}
void r4300i_LWC1 (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (uint32_t)((int16_t)Opcode.offset);
TEST_COP1_USABLE_EXCEPTION
if ((Address & 3) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (!r4300i_LW_VAddr(Address,&*(uint32_t *)FPRFloatLocation[Opcode.ft]))
{
//if (ShowTLBMisses) {
DisplayError("LWC1 TLB: %X",Address);
//}
TLB_READ_EXCEPTION(Address);
}
}
void r4300i_SC (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 3) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,0);
}
if (LLBit == 1)
{
if (!r4300i_SW_VAddr(Address,GPR[Opcode.rt].UW[0]))
{
DisplayError("SW TLB: %X",Address);
}
}
GPR[Opcode.rt].UW[0] = LLBit;
}
void r4300i_LD (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 7) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (!r4300i_LD_VAddr(Address,&GPR[Opcode.rt].UDW))
{
}
}
void r4300i_LDC1 (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
TEST_COP1_USABLE_EXCEPTION
if ((Address & 7) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,1);
}
if (!r4300i_LD_VAddr(Address,&*(uint64_t *)FPRDoubleLocation[Opcode.ft]))
{
}
}
void r4300i_SWC1 (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
TEST_COP1_USABLE_EXCEPTION
if ((Address & 3) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,0);
}
if (!r4300i_SW_VAddr(Address,*(uint32_t *)FPRFloatLocation[Opcode.ft]))
{
}
}
void r4300i_SDC1 (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
TEST_COP1_USABLE_EXCEPTION
if ((Address & 7) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,0);
}
if (!r4300i_SD_VAddr(Address,*(int64_t *)FPRDoubleLocation[Opcode.ft]))
{
}
}
void r4300i_SD (void)
{
uint32_t Address = GPR[Opcode.base].UW[0] + (int16_t)Opcode.offset;
if ((Address & 7) != 0)
{
ADDRESS_ERROR_EXCEPTION(Address,0);
}
if (!r4300i_SD_VAddr(Address,GPR[Opcode.rt].UDW))
{
}
}
/********************** R4300i OpCodes: Special **********************/
void r4300i_SPECIAL_SLL (void)
{
GPR[Opcode.rd].DW = (GPR[Opcode.rt].W[0] << Opcode.sa);
}
void r4300i_SPECIAL_SRL (void)
{
GPR[Opcode.rd].DW = (int32_t)(GPR[Opcode.rt].UW[0] >> Opcode.sa);
}
void r4300i_SPECIAL_SRA (void)
{
GPR[Opcode.rd].DW = (GPR[Opcode.rt].W[0] >> Opcode.sa);
}
void r4300i_SPECIAL_SLLV (void)
{
if (Opcode.rd == 0)
{
return;
}
GPR[Opcode.rd].DW = (GPR[Opcode.rt].W[0] << (GPR[Opcode.rs].UW[0] & 0x1F));
}
void r4300i_SPECIAL_SRLV (void)
{
GPR[Opcode.rd].DW = (int32_t)(GPR[Opcode.rt].UW[0] >> (GPR[Opcode.rs].UW[0] & 0x1F));
}
void r4300i_SPECIAL_SRAV (void)
{
GPR[Opcode.rd].DW = (GPR[Opcode.rt].W[0] >> (GPR[Opcode.rs].UW[0] & 0x1F));
}
void r4300i_SPECIAL_JR (void)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = GPR[Opcode.rs].UW[0];
}
void r4300i_SPECIAL_JALR (void)
{
NextInstruction = DELAY_SLOT;
JumpToLocation = GPR[Opcode.rs].UW[0];
GPR[Opcode.rd].DW = (int32_t)(PROGRAM_COUNTER + 8);
}
void r4300i_SPECIAL_SYSCALL (void)
{
DoSysCallException(NextInstruction == JUMP);
NextInstruction = JUMP;
JumpToLocation = PROGRAM_COUNTER;
}
void r4300i_SPECIAL_BREAK (void)
{
*WaitMode=1;
}
void r4300i_SPECIAL_SYNC (void)
{
}
void r4300i_SPECIAL_MFHI (void)
{
GPR[Opcode.rd].DW = HI.DW;
}
void r4300i_SPECIAL_MTHI (void)
{
HI.DW = GPR[Opcode.rs].DW;
}
void r4300i_SPECIAL_MFLO (void)
{
GPR[Opcode.rd].DW = LO.DW;
}
void r4300i_SPECIAL_MTLO (void)
{
LO.DW = GPR[Opcode.rs].DW;
}
void r4300i_SPECIAL_DSLLV (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rt].DW << (GPR[Opcode.rs].UW[0] & 0x3F);
}
void r4300i_SPECIAL_DSRLV (void)
{
GPR[Opcode.rd].UDW = GPR[Opcode.rt].UDW >> (GPR[Opcode.rs].UW[0] & 0x3F);
}
void r4300i_SPECIAL_DSRAV (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rt].DW >> (GPR[Opcode.rs].UW[0] & 0x3F);
}
void r4300i_SPECIAL_MULT (void)
{
HI.DW = (int64_t)(GPR[Opcode.rs].W[0]) * (int64_t)(GPR[Opcode.rt].W[0]);
LO.DW = HI.W[0];
HI.DW = HI.W[1];
}
void r4300i_SPECIAL_MULTU (void)
{
HI.DW = (uint64_t)(GPR[Opcode.rs].UW[0]) * (uint64_t)(GPR[Opcode.rt].UW[0]);
LO.DW = HI.W[0];
HI.DW = HI.W[1];
}
void r4300i_SPECIAL_DIV (void)
{
if ( GPR[Opcode.rt].UDW != 0 )
{
LO.DW = GPR[Opcode.rs].W[0] / GPR[Opcode.rt].W[0];
HI.DW = GPR[Opcode.rs].W[0] % GPR[Opcode.rt].W[0];
}
else
{
}
}
void r4300i_SPECIAL_DIVU (void)
{
if ( GPR[Opcode.rt].UDW != 0 )
{
LO.DW = (int32_t)(GPR[Opcode.rs].UW[0] / GPR[Opcode.rt].UW[0]);
HI.DW = (int32_t)(GPR[Opcode.rs].UW[0] % GPR[Opcode.rt].UW[0]);
}
else
{
}
}
void r4300i_SPECIAL_DMULT (void)
{
MIPS_DWORD Tmp[3];
LO.UDW = (uint64_t)GPR[Opcode.rs].UW[0] * (uint64_t)GPR[Opcode.rt].UW[0];
Tmp[0].UDW = (int64_t)GPR[Opcode.rs].W[1] * (int64_t)(uint64_t)GPR[Opcode.rt].UW[0];
Tmp[1].UDW = (int64_t)(uint64_t)GPR[Opcode.rs].UW[0] * (int64_t)GPR[Opcode.rt].W[1];
HI.UDW = (int64_t)GPR[Opcode.rs].W[1] * (int64_t)GPR[Opcode.rt].W[1];
Tmp[2].UDW = (uint64_t)LO.UW[1] + (uint64_t)Tmp[0].UW[0] + (uint64_t)Tmp[1].UW[0];
LO.UDW += ((uint64_t)Tmp[0].UW[0] + (uint64_t)Tmp[1].UW[0]) << 32;
HI.UDW += (uint64_t)Tmp[0].W[1] + (uint64_t)Tmp[1].W[1] + Tmp[2].UW[1];
}
void r4300i_SPECIAL_DMULTU (void)
{
MIPS_DWORD Tmp[3];
LO.UDW = (uint64_t)GPR[Opcode.rs].UW[0] * (uint64_t)GPR[Opcode.rt].UW[0];
Tmp[0].UDW = (uint64_t)GPR[Opcode.rs].UW[1] * (uint64_t)GPR[Opcode.rt].UW[0];
Tmp[1].UDW = (uint64_t)GPR[Opcode.rs].UW[0] * (uint64_t)GPR[Opcode.rt].UW[1];
HI.UDW = (uint64_t)GPR[Opcode.rs].UW[1] * (uint64_t)GPR[Opcode.rt].UW[1];
Tmp[2].UDW = (uint64_t)LO.UW[1] + (uint64_t)Tmp[0].UW[0] + (uint64_t)Tmp[1].UW[0];
LO.UDW += ((uint64_t)Tmp[0].UW[0] + (uint64_t)Tmp[1].UW[0]) << 32;
HI.UDW += (uint64_t)Tmp[0].UW[1] + (uint64_t)Tmp[1].UW[1] + Tmp[2].UW[1];
}
void r4300i_SPECIAL_DDIV (void)
{
if ( GPR[Opcode.rt].UDW != 0 )
{
LO.DW = GPR[Opcode.rs].DW / GPR[Opcode.rt].DW;
HI.DW = GPR[Opcode.rs].DW % GPR[Opcode.rt].DW;
}
else
{
}
}
void r4300i_SPECIAL_DDIVU (void)
{
if ( GPR[Opcode.rt].UDW != 0 )
{
LO.UDW = GPR[Opcode.rs].UDW / GPR[Opcode.rt].UDW;
HI.UDW = GPR[Opcode.rs].UDW % GPR[Opcode.rt].UDW;
}
else
{
}
}
void r4300i_SPECIAL_ADD (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].W[0] + GPR[Opcode.rt].W[0];
}
void r4300i_SPECIAL_ADDU (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].W[0] + GPR[Opcode.rt].W[0];
}
void r4300i_SPECIAL_SUB (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].W[0] - GPR[Opcode.rt].W[0];
}
void r4300i_SPECIAL_SUBU (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].W[0] - GPR[Opcode.rt].W[0];
}
void r4300i_SPECIAL_AND (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].DW & GPR[Opcode.rt].DW;
}
void r4300i_SPECIAL_OR (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].DW | GPR[Opcode.rt].DW;
}
void r4300i_SPECIAL_XOR (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].DW ^ GPR[Opcode.rt].DW;
}
void r4300i_SPECIAL_NOR (void)
{
GPR[Opcode.rd].DW = ~(GPR[Opcode.rs].DW | GPR[Opcode.rt].DW);
}
void r4300i_SPECIAL_SLT (void)
{
if (GPR[Opcode.rs].DW < GPR[Opcode.rt].DW)
{
GPR[Opcode.rd].DW = 1;
}
else
{
GPR[Opcode.rd].DW = 0;
}
}
void r4300i_SPECIAL_SLTU (void)
{
if (GPR[Opcode.rs].UDW < GPR[Opcode.rt].UDW)
{
GPR[Opcode.rd].DW = 1;
}
else
{
GPR[Opcode.rd].DW = 0;
}
}
void r4300i_SPECIAL_DADD (void)
{
GPR[Opcode.rd].DW = GPR[Opcode.rs].DW + GPR[Opcode.rt].DW;
}
void r4300i_SPECIAL_DADDU (void)