ppsspp/Core/MemMap.h

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// Copyright (C) 2003 Dolphin Project / 2012 PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _MEMMAP_H
#define _MEMMAP_H
// Includes
#include <string>
#include "Common.h"
#include "CommonTypes.h"
#include "HDRemaster.h"
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// Enable memory checks in the Debug/DebugFast builds, but NOT in release
#if defined(_DEBUG) || defined(DEBUGFAST)
#define ENABLE_MEM_CHECK
#endif
// PPSSPP is very aggressive about trying to do memory accesses directly, for speed.
// This can be a problem when debugging though, as stray memory reads and writes will
// crash the whole emulator.
// If safe memory is enabled and JIT is disabled, all memory access will go through the proper
// memory access functions, and thus won't crash the emu when they go out of bounds.
#if defined(_DEBUG)
//#define SAFE_MEMORY
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#endif
#ifdef __SYMBIAN32__
//#define SAFE_MEMORY
#endif
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// Global declarations
class PointerWrap;
typedef void (*writeFn8 )(const u8, const u32);
typedef void (*writeFn16)(const u16,const u32);
typedef void (*writeFn32)(const u32,const u32);
typedef void (*writeFn64)(const u64,const u32);
typedef void (*readFn8 )(u8&, const u32);
typedef void (*readFn16)(u16&, const u32);
typedef void (*readFn32)(u32&, const u32);
typedef void (*readFn64)(u64&, const u32);
namespace Memory
{
// Base is a pointer to the base of the memory map. Yes, some MMU tricks
// are used to set up a full GC or Wii memory map in process memory. on
// 32-bit, you have to mask your offsets with 0x3FFFFFFF. This means that
// some things are mirrored too many times, but eh... it works.
// In 64-bit, this might point to "high memory" (above the 32-bit limit),
// so be sure to load it into a 64-bit register.
extern u8 *base;
// These are guaranteed to point to "low memory" addresses (sub-32-bit).
// 64-bit: Pointers to low-mem (sub-0x10000000) mirror
// 32-bit: Same as the corresponding physical/virtual pointers.
extern u8 *m_pRAM;
extern u8 *m_pScratchPad;
extern u8 *m_pVRAM;
// 64-bit: Pointers to high-mem mirrors
// 32-bit: Same as above
extern u8 *m_pPhysicalRAM;
extern u8 *m_pUncachedRAM;
extern u8 *m_pPhysicalVRAM;
extern u8 *m_pUncachedVRAM;
extern u32 g_MemoryEnd; // End of PSP Userspace
extern u32 g_MemorySize; // Replaces RAM_SIZE
extern u32 g_MemoryMask; // Replaces RAM_MASK
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enum
{
VRAM_SIZE = 0x200000,
VRAM_MASK = VRAM_SIZE - 1,
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SCRATCHPAD_SIZE = 0x4000,
SCRATCHPAD_MASK = SCRATCHPAD_SIZE - 1,
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#if defined(_M_IX86) || defined(_M_ARM32)
// This wraparound should work for PSP too.
MEMVIEW32_MASK = 0x3FFFFFFF,
#endif
};
// Init and Shutdown
void Init();
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void Shutdown();
void DoState(PointerWrap &p);
void Clear();
// used by JIT to read instructions
u32 Read_Opcode_JIT(const u32 _Address);
// used by JIT. uses iCacheJIT. Reads in the "Locked cache" mode
void Write_Opcode_JIT(const u32 _Address, const u32 _Value);
// this is used by Debugger a lot.
// For now, just reads from memory!
u32 Read_Instruction(const u32 _Address);
// For use by emulator
u8 Read_U8(const u32 _Address);
u16 Read_U16(const u32 _Address);
u32 Read_U32(const u32 _Address);
u64 Read_U64(const u32 _Address);
#if (defined(ARM) || defined(_ARM)) && !defined(_M_ARM)
#define _M_ARM
#endif
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#ifdef SAFE_MEMORY
u32 ReadUnchecked_U32(const u32 _Address);
// ONLY for use by GUI and fast interpreter
u8 ReadUnchecked_U8(const u32 _Address);
u16 ReadUnchecked_U16(const u32 _Address);
void WriteUnchecked_U8(const u8 _Data, const u32 _Address);
void WriteUnchecked_U16(const u16 _Data, const u32 _Address);
void WriteUnchecked_U32(const u32 _Data, const u32 _Address);
#else
inline u32 ReadUnchecked_U32(const u32 address) {
#if defined(_M_IX86) || defined(_M_ARM32)
return (*(u32 *)(base + (address & MEMVIEW32_MASK)));
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#else
return (*(u32 *)(base + address));
#endif
}
inline u16 ReadUnchecked_U16(const u32 address) {
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#if defined(_M_IX86) || defined(_M_ARM32)
return (*(u16 *)(base + (address & MEMVIEW32_MASK)));
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#else
return (*(u16 *)(base + address));
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#endif
}
inline u8 ReadUnchecked_U8(const u32 address) {
#if defined(_M_IX86) || defined(_M_ARM32)
return (*(u8 *)(base + (address & MEMVIEW32_MASK)));
#else
return (*(u8 *)(base + address));
#endif
}
inline void WriteUnchecked_U32(u32 data, u32 address) {
#if defined(_M_IX86) || defined(_M_ARM32)
(*(u32 *)(base + (address & MEMVIEW32_MASK))) = data;
#else
(*(u32 *)(base + address)) = data;
#endif
}
inline void WriteUnchecked_U16(u16 data, u32 address) {
#if defined(_M_IX86) || defined(_M_ARM32)
(*(u16 *)(base + (address & MEMVIEW32_MASK))) = data;
#else
(*(u16 *)(base + address)) = data;
#endif
}
inline void WriteUnchecked_U8(u8 data, u32 address) {
#if defined(_M_IX86) || defined(_M_ARM32)
(*(u8 *)(base + (address & MEMVIEW32_MASK))) = data;
#else
(*(u8 *)(base + address)) = data;
#endif
}
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#endif
inline float Read_Float(u32 address)
{
u32 ifloat = Read_U32(address);
float f;
memcpy(&f, &ifloat, sizeof(float));
return f;
}
// used by JIT. Return zero-extended 32bit values
u32 Read_U8_ZX(const u32 address);
u32 Read_U16_ZX(const u32 address);
void Write_U8(const u8 data, const u32 address);
void Write_U16(const u16 data, const u32 address);
void Write_U32(const u32 data, const u32 address);
void Write_U64(const u64 data, const u32 address);
inline void Write_Float(float f, u32 address)
{
u32 u;
memcpy(&u, &f, sizeof(float));
Write_U32(u, address);
}
// Reads a zero-terminated string from memory at the address.
void GetString(std::string& _string, const u32 _Address);
u8* GetPointer(const u32 address);
bool IsValidAddress(const u32 address);
inline const char* GetCharPointer(const u32 address) {
return (const char *)GetPointer(address);
}
void Memset(const u32 _Address, const u8 _Data, const u32 _iLength);
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void Memcpy(const u32 to_address, const void *from_data, const u32 len);
void Memcpy(void *to_data, const u32 from_address, const u32 len);
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template<class T>
void ReadStruct(u32 address, T *ptr)
{
size_t sz = sizeof(*ptr);
memcpy(ptr, GetPointer(address), sz);
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}
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template<class T>
void WriteStruct(u32 address, T *ptr)
{
size_t sz = sizeof(*ptr);
memcpy(GetPointer(address), ptr, sz);
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}
// Expect this to be some form of auto class on big endian.
template<class T>
T *GetStruct(u32 address)
{
return (T *)GetPointer(address);
}
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const char *GetAddressName(u32 address);
};
template <typename T>
struct PSPPointer
{
u32 ptr;
inline T &operator*() const
{
return *(T *)(Memory::base + ptr);
}
inline T &operator[](int i) const
{
return *((T *)(Memory::base + ptr) + i);
}
inline T *operator->() const
{
return (T *)(Memory::base + ptr);
}
inline PSPPointer<T> operator+(int i) const
{
PSPPointer other;
other.ptr = ptr + i * sizeof(T);
return other;
}
inline PSPPointer<T> &operator=(u32 p)
{
ptr = p;
return *this;
}
inline PSPPointer<T> &operator+=(int i)
{
ptr = ptr + i * sizeof(T);
return *this;
}
inline PSPPointer<T> operator-(int i) const
{
PSPPointer other;
other.ptr = ptr - i * sizeof(T);
return other;
}
inline PSPPointer<T> &operator-=(int i)
{
ptr = ptr - i * sizeof(T);
return *this;
}
inline PSPPointer<T> &operator++()
{
ptr += sizeof(T);
return *this;
}
inline PSPPointer<T> operator++(int i)
{
PSPPointer<T> other;
other.ptr = ptr;
ptr += sizeof(T);
return other;
}
inline PSPPointer<T> &operator--()
{
ptr -= sizeof(T);
return *this;
}
inline PSPPointer<T> operator--(int i)
{
PSPPointer<T> other;
other.ptr = ptr;
ptr -= sizeof(T);
return other;
}
inline operator T*()
{
return (T *)(Memory::base + ptr);
}
bool IsValid() const
{
return Memory::IsValidAddress(ptr);
}
};
inline u32 PSP_GetUserMemoryEnd() { return Memory::g_MemoryEnd;}
inline u32 PSP_GetScratchpadMemoryBase() { return 0x00010000;}
inline u32 PSP_GetScratchpadMemoryEnd() { return 0x00014000;}
inline u32 PSP_GetKernelMemoryBase() { return 0x08000000;}
inline u32 PSP_GetKernelMemoryEnd() { return 0x08400000;}
// "Volatile" RAM is between 0x08400000 and 0x08800000, can be requested by the
// game through sceKernelVolatileMemTryLock.
inline u32 PSP_GetUserMemoryBase() { return 0x08800000;}
inline u32 PSP_GetDefaultLoadAddress() { return 0x08804000;}
//inline u32 PSP_GetDefaultLoadAddress() { return 0x0898dab0;}
inline u32 PSP_GetVidMemBase() { return 0x04000000;}
inline u32 PSP_GetVidMemEnd() { return 0x04800000;}
template <typename T>
inline bool operator==(const PSPPointer<T> &lhs, const PSPPointer<T> &rhs)
{
return lhs.ptr == rhs.ptr;
}
template <typename T>
inline bool operator!=(const PSPPointer<T> &lhs, const PSPPointer<T> &rhs)
{
return lhs.ptr != rhs.ptr;
}
template <typename T>
inline bool operator<(const PSPPointer<T> &lhs, const PSPPointer<T> &rhs)
{
return lhs.ptr < rhs.ptr;
}
template <typename T>
inline bool operator>(const PSPPointer<T> &lhs, const PSPPointer<T> &rhs)
{
return lhs.ptr > rhs.ptr;
}
template <typename T>
inline bool operator<=(const PSPPointer<T> &lhs, const PSPPointer<T> &rhs)
{
return lhs.ptr <= rhs.ptr;
}
template <typename T>
inline bool operator>=(const PSPPointer<T> &lhs, const PSPPointer<T> &rhs)
{
return lhs.ptr >= rhs.ptr;
}
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#endif