mirror of
https://github.com/jpd002/Play-.git
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196 lines
3.6 KiB
C++
196 lines
3.6 KiB
C++
#pragma once
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#include "iop/Iop_BiosBase.h"
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#include "OsStructManager.h"
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#include "OsVariableWrapper.h"
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#include "MIPS.h"
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class CPsxBios : public Iop::CBiosBase
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{
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public:
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struct EXEHEADER
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{
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uint8 id[8];
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uint32 text;
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uint32 data;
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uint32 pc0;
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uint32 gp0;
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uint32 textAddr;
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uint32 textSize;
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uint32 dataAddr;
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uint32 dataSize;
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uint32 bssAddr;
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uint32 bssSize;
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uint32 stackAddr;
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uint32 stackSize;
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uint32 savedSp;
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uint32 savedFp;
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uint32 savedGp;
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uint32 savedRa;
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uint32 savedS0;
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};
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CPsxBios(CMIPS&, uint8*, uint32);
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virtual ~CPsxBios() = default;
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void Reset();
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void HandleInterrupt() override;
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void HandleException() override;
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void CountTicks(uint32) override;
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void LoadExe(const uint8*);
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void SaveState(Framework::CZipArchiveWriter&) override;
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void LoadState(Framework::CZipArchiveReader&) override;
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void NotifyVBlankStart() override;
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void NotifyVBlankEnd() override;
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bool IsIdle() override;
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#ifdef DEBUGGER_INCLUDED
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void LoadDebugTags(Framework::Xml::CNode*) override;
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void SaveDebugTags(Framework::Xml::CNode*) override;
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BiosDebugModuleInfoArray GetModulesDebugInfo() const override;
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#endif
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private:
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struct EVENT
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{
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uint32 isValid;
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uint32 enabled;
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uint32 classId;
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uint32 spec;
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uint32 mode;
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uint32 func;
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uint32 fired;
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};
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struct CB_TABLE
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{
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uint32 address;
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uint32 size;
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};
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struct PROCESS
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{
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uint32 currentThreadControlBlockAddr;
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};
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enum THREAD_STATUS
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{
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THREAD_STATUS_FREE = 0x1000,
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THREAD_STATUS_ALLOCATED = 0x4000,
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};
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struct THREAD
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{
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uint32 status;
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uint32 reserved0;
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uint32 gpr[0x20];
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uint32 pc;
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uint32 hi;
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uint32 lo;
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uint32 sr;
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uint32 cause;
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uint32 reserved1[9];
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};
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static_assert(sizeof(THREAD) == 0xC0, "Size of THREAD must be 192 bytes.");
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enum
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{
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MAX_EVENT = 32,
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};
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enum
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{
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EVENT_ID_RCNT2 = 0xF2000002,
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};
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typedef void (CPsxBios::*SyscallHandler)();
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void LongJump(uint32, uint32 = 0);
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PROCESS* GetProcess();
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void SaveCpuState();
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void LoadCpuState();
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uint32 AllocateSysMemory(uint32);
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void DisassembleSyscall(uint32);
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void ProcessSubFunction(SyscallHandler*, unsigned int);
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void AssembleInterruptHandler();
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void AssembleEventChecker();
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//A0
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void sc_setjmp();
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void sc_longjmp();
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void sc_strcpy();
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void sc_bzero();
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void sc_memcpy();
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void sc_memset();
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void sc_rand();
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void sc_srand();
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void sc_InitHeap();
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void sc_printf();
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void sc_FlushCache();
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void sc_bu_init();
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void sc_96_remove();
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void sc_SetMem();
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//B0
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void sc_SysMalloc();
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void sc_DeliverEvent();
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void sc_OpenEvent();
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void sc_CloseEvent();
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void sc_WaitEvent();
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void sc_TestEvent();
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void sc_EnableEvent();
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void sc_DisableEvent();
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void sc_OpenThread();
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void sc_ChangeThread();
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void sc_StopPAD();
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void sc_PAD_dr();
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void sc_ReturnFromException();
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void sc_SetDefaultExitFromException();
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void sc_SetCustomExitFromException();
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void sc_puts();
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void sc_InitCARD();
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void sc_StartCARD();
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void sc_GetC0Table();
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void sc_GetB0Table();
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void sc_ChangeClearPad();
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//C0
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void sc_EnqueueTimerAndVblankIrqs();
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void sc_EnqueueSyscallHandler();
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void sc_SysDeqIntRP();
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void sc_SysInitMemory();
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void sc_ChangeClearRCnt();
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void sc_InitDefInt();
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void sc_EnterCriticalSection();
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void sc_ExitCriticalSection();
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void sc_Illegal();
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enum
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{
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MAX_HANDLER_A0 = 0x100,
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MAX_HANDLER_B0 = 0x80,
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MAX_HANDLER_C0 = 0x20,
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};
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CMIPS& m_cpu;
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uint8* m_ram;
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uint32 m_ramSize;
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OsVariableWrapper<uint32> m_exitFromExceptionStateAddr;
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OsVariableWrapper<uint32> m_sysHeapPointerAddr;
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COsStructManager<EVENT> m_events;
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static SyscallHandler m_handlerA0[MAX_HANDLER_A0];
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static SyscallHandler m_handlerB0[MAX_HANDLER_B0];
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static SyscallHandler m_handlerC0[MAX_HANDLER_C0];
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};
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