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src/Cafe/HW/Espresso/PPCState.h
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src/Cafe/HW/Espresso/PPCState.h
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#pragma once
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#include "Cafe/HW/MMU/MMU.h"
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enum
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{
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CPUException_NOTHING,
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CPUException_FPUUNAVAILABLE,
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CPUException_EXTERNAL,
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CPUException_SYSTEMCALL
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};
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#define PPC_LWARX_RESERVATION_MAX (4)
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union FPR_t
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{
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double fpr;
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struct
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{
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double fp0;
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double fp1;
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};
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struct
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{
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uint64 guint;
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};
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struct
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{
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uint64 fp0int;
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uint64 fp1int;
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};
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};
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typedef struct
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{
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struct
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{
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uint32 scr;
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uint32 car;
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//uint32 bcr;
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}sprGlobal;
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uint64 tb;
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}PPCInterpreterGlobal_t;
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struct PPCInterpreter_t
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{
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uint32 instructionPointer;
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uint32 gpr[32];
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FPR_t fpr[32];
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uint32 fpscr;
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uint8 cr[32]; // 0 -> bit not set, 1 -> bit set (upper 7 bits of each byte must always be zero) (cr0 starts at index 0, cr1 at index 4 ..)
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uint8 xer_ca; // carry from xer
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uint8 LSQE;
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uint8 PSE;
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// thread remaining cycles
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sint32 remainingCycles; // if this value goes below zero, the next thread is scheduled
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sint32 skippedCycles; // number of skipped cycles
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struct
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{
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uint32 LR;
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uint32 CTR;
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uint32 XER;
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uint32 UPIR;
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uint32 UGQR[8];
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}spr;
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// LWARX and STWCX
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uint32 reservedMemAddr;
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uint32 reservedMemValue;
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/* Note: Everything above is potentially hardcoded into Cemuhook. Do not touch anything or it will risk breaking compatibility */
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// temporary storage for recompiler
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FPR_t temporaryFPR[8];
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uint32 temporaryGPR[4];
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// values below this are not used by Cafe OS usermode
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struct
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{
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uint32 fpecr; // is this the same register as fpscr ?
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uint32 DEC;
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uint32 srr0;
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uint32 srr1;
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uint32 PVR;
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uint32 msr;
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uint32 sprg[4];
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// DSI/ISI
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uint32 dar;
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uint32 dsisr;
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// DMA
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uint32 dmaU;
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uint32 dmaL;
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// MMU
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uint32 dbatU[8];
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uint32 dbatL[8];
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uint32 ibatU[8];
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uint32 ibatL[8];
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uint32 sr[16];
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uint32 sdr1;
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}sprExtended;
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// global CPU values
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PPCInterpreterGlobal_t* global;
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// interpreter control
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bool memoryException;
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// core context (starts at 0xFFFFFF00?)
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/* 0xFFFFFFE4 */ uint32 coreInterruptMask;
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// extra variables for recompiler
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void* rspTemp;
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};
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// parameter access (legacy C style)
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static uint32 PPCInterpreter_getCallParamU32(PPCInterpreter_t* hCPU, uint32 index)
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{
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if (index >= 8)
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return memory_readU32(hCPU->gpr[1] + 8 + (index - 8) * 4);
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return hCPU->gpr[3 + index];
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}
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static uint64 PPCInterpreter_getCallParamU64(PPCInterpreter_t* hCPU, uint32 index)
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{
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uint64 v = ((uint64)PPCInterpreter_getCallParamU32(hCPU, index)) << 32ULL;
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v |= ((uint64)PPCInterpreter_getCallParamU32(hCPU, index+1));
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return v;
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}
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#define ppcGetCallParamU32(__index) PPCInterpreter_getCallParamU32(hCPU, __index)
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#define ppcGetCallParamU16(__index) ((uint16)(PPCInterpreter_getCallParamU32(hCPU, __index)&0xFFFF))
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#define ppcGetCallParamU8(__index) ((uint8)(PPCInterpreter_getCallParamU32(hCPU, __index)&0xFF))
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#define ppcGetCallParamStruct(__index, __type) ((__type*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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// legacy way of accessing parameters
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#define ppcDefineParamU32(__name, __index) uint32 __name = PPCInterpreter_getCallParamU32(hCPU, __index)
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#define ppcDefineParamU16(__name, __index) uint16 __name = (uint16)PPCInterpreter_getCallParamU32(hCPU, __index)
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#define ppcDefineParamU32BEPtr(__name, __index) uint32be* __name = (uint32be*)((uint8*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamS32(__name, __index) sint32 __name = (sint32)PPCInterpreter_getCallParamU32(hCPU, __index)
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#define ppcDefineParamU64(__name, __index) uint64 __name = PPCInterpreter_getCallParamU64(hCPU, __index)
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#define ppcDefineParamMPTR(__name, __index) MPTR __name = (MPTR)PPCInterpreter_getCallParamU32(hCPU, __index)
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#define ppcDefineParamMEMPTR(__name, __type, __index) MEMPTR<__type> __name{PPCInterpreter_getCallParamU32(hCPU, __index)}
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#define ppcDefineParamU8(__name, __index) uint8 __name = (PPCInterpreter_getCallParamU32(hCPU, __index)&0xFF)
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#define ppcDefineParamStructPtr(__name, __type, __index) __type* __name = ((__type*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamTypePtr(__name, __type, __index) __type* __name = ((__type*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamPtr(__name, __type, __index) __type* __name = ((__type*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamStr(__name, __index) char* __name = ((char*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamUStr(__name, __index) uint8* __name = ((uint8*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamWStr(__name, __index) wchar_t* __name = ((wchar_t*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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#define ppcDefineParamWStrBE(__name, __index) uint16be* __name = ((uint16be*)memory_getPointerFromVirtualOffsetAllowNull(PPCInterpreter_getCallParamU32(hCPU, __index)))
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// GPR constants
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#define GPR_SP 1
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// interpreter functions
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PPCInterpreter_t* PPCInterpreter_createInstance(unsigned int Entrypoint);
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PPCInterpreter_t* PPCInterpreter_getCurrentInstance();
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uint64 PPCInterpreter_getMainCoreCycleCounter();
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void PPCInterpreter_nextInstruction(PPCInterpreter_t* cpuInterpreter);
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void PPCInterpreter_jumpToInstruction(PPCInterpreter_t* cpuInterpreter, uint32 newIP);
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void PPCInterpreterSlim_executeInstruction(PPCInterpreter_t* hCPU);
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void PPCInterpreterFull_executeInstruction(PPCInterpreter_t* hCPU);
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// misc
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uint32 PPCInterpreter_getXER(PPCInterpreter_t* hCPU);
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void PPCInterpreter_setXER(PPCInterpreter_t* hCPU, uint32 v);
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// Wii U clocks (deprecated. Moved to Espresso/Const.h)
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#define ESPRESSO_CORE_CLOCK 1243125000
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#define ESPRESSO_BUS_CLOCK 248625000
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#define ESPRESSO_TIMER_CLOCK (ESPRESSO_BUS_CLOCK/4) // 62156250
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#define ESPRESSO_CORE_CLOCK_TO_TIMER_CLOCK(__cc) ((__cc)/20ULL)
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// interrupt vectors
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#define CPU_EXCEPTION_DSI 0x00000300
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#define CPU_EXCEPTION_INTERRUPT 0x00000500 // todo: validate
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#define CPU_EXCEPTION_FPUUNAVAIL 0x00000800 // todo: validate
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#define CPU_EXCEPTION_SYSTEMCALL 0x00000C00 // todo: validate
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#define CPU_EXCEPTION_DECREMENTER 0x00000900 // todo: validate
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// FPU available check
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//#define FPUCheckAvailable() if ((hCPU->msr & MSR_FP) == 0) { IPTException(hCPU, CPU_EXCEPTION_FPUUNAVAIL); return; }
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#define FPUCheckAvailable() // since the emulated code always runs in usermode we can assume that MSR_FP is always set
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// spr
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void PPCSpr_set(PPCInterpreter_t* hCPU, uint32 spr, uint32 newValue);
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uint32 PPCSpr_get(PPCInterpreter_t* hCPU, uint32 spr);
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uint32 PPCInterpreter_getCoreIndex(PPCInterpreter_t* hCPU);
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uint32 PPCInterpreter_getCurrentCoreIndex();
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// decrement register
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void PPCInterpreter_setDEC(PPCInterpreter_t* hCPU, uint32 newValue);
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// timing for main processor
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extern volatile uint64 ppcMainThreadCycleCounter;
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extern uint64 ppcCyclesSince2000; // on init this is set to the cycles that passed since 1.1.2000
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extern uint64 ppcCyclesSince2000TimerClock; // on init this is set to the cycles that passed since 1.1.2000 / 20
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extern uint64 ppcCyclesSince2000_UTC;
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extern uint64 ppcMainThreadDECCycleValue; // value that was set to dec register
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extern uint64 ppcMainThreadDECCycleStart; // at which cycle the dec register was set
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// PPC timer
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void PPCTimer_init();
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void PPCTimer_waitForInit();
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uint64 PPCTimer_getFromRDTSC();
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bool PPCTimer_hasInvariantRDTSCSupport();
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uint64 PPCTimer_microsecondsToTsc(uint64 us);
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uint64 PPCTimer_tscToMicroseconds(uint64 us);
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uint64 PPCTimer_getRawTsc();
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void PPCTimer_start();
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// core info and control
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extern uint32 ppcThreadQuantum;
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extern thread_local PPCInterpreter_t *ppcInterpreterCurrentInstance;
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uint8* PPCInterpreterGetAndModifyStackPointer(sint32 offset);
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uint8* PPCInterpreterGetStackPointer();
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void PPCInterpreterModifyStackPointer(sint32 offset);
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uint32 PPCInterpreter_makeCallableExportDepr(void (*ppcCallableExport)(PPCInterpreter_t* hCPU));
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static inline float flushDenormalToZero(float f)
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{
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uint32 v = *(uint32*)&f;
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return *(float*)&v;
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}
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// HLE interface
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typedef void(*HLECALL)(PPCInterpreter_t* hCPU);
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typedef sint32 HLEIDX;
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HLEIDX PPCInterpreter_registerHLECall(HLECALL hleCall);
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HLECALL PPCInterpreter_getHLECall(HLEIDX funcIndex);
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// HLE scheduler
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void PPCCore_deleteAllThreads();
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void PPCInterpreter_relinquishTimeslice();
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void PPCCore_boostQuantum(sint32 numCycles);
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void PPCCore_deboostQuantum(sint32 numCycles);
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void PPCCore_switchToScheduler();
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void PPCCore_switchToSchedulerWithLock();
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PPCInterpreter_t* PPCCore_executeCallbackInternal(uint32 functionMPTR);
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void PPCCore_init();
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// LLE scheduler
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void PPCCoreLLE_startSingleCoreScheduler(uint32 entrypoint);
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