ppsspp/Core/MemMap.cpp

261 lines
7.8 KiB
C++
Raw Normal View History

2012-11-01 15:19:01 +00:00
// 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.
2012-11-01 15:19:01 +00:00
// 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 git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
2013-12-11 12:55:57 +00:00
#include <algorithm>
2012-11-01 15:19:01 +00:00
#include "Common.h"
#include "MemoryUtil.h"
#include "MemArena.h"
#include "ChunkFile.h"
#include "MemMap.h"
2012-11-01 15:19:01 +00:00
#include "MIPS/MIPS.h"
#include "MIPS/JitCommon/JitCommon.h"
#include "HLE/HLE.h"
#include "Core/Core.h"
#include "Core/Debugger/SymbolMap.h"
#include "Core/Debugger/Breakpoints.h"
2013-11-28 19:58:59 +00:00
#include "Core/Config.h"
#include "Core/HLE/ReplaceTables.h"
2012-11-01 15:19:01 +00:00
namespace Memory {
2012-11-01 15:19:01 +00:00
// The base pointer to the auto-mirrored arena.
u8* base = NULL;
// The MemArena class
MemArena g_arena;
// ==============
// 64-bit: Pointers to low-mem (sub-0x10000000) mirror
// 32-bit: Same as the corresponding physical/virtual pointers.
u8 *m_pRAM;
u8 *m_pRAM2;
u8 *m_pRAM3;
2012-11-01 15:19:01 +00:00
u8 *m_pScratchPad;
u8 *m_pVRAM;
u8 *m_pPhysicalScratchPad;
u8 *m_pUncachedScratchPad;
2012-11-01 15:19:01 +00:00
// 64-bit: Pointers to high-mem mirrors
// 32-bit: Same as above
u8 *m_pPhysicalRAM;
u8 *m_pUncachedRAM;
u8 *m_pKernelRAM; // RAM mirrored up to "kernel space". Fully accessible at all times currently.
u8 *m_pPhysicalRAM2;
u8 *m_pUncachedRAM2;
u8 *m_pKernelRAM2;
u8 *m_pPhysicalRAM3;
u8 *m_pUncachedRAM3;
u8 *m_pKernelRAM3;
2012-11-01 15:19:01 +00:00
u8 *m_pPhysicalVRAM;
u8 *m_pUncachedVRAM;
// Holds the ending address of the PSP's user space.
// Required for HD Remasters to work properly.
// These replace RAM_NORMAL_SIZE and RAM_NORMAL_MASK, respectively.
u32 g_MemorySize;
u32 g_MemoryMask;
// Used to store the PSP model on game startup.
u32 g_PSPModel;
2012-11-01 15:19:01 +00:00
// We don't declare the IO region in here since its handled by other means.
static MemoryView views[] =
2012-11-01 15:19:01 +00:00
{
{&m_pScratchPad, &m_pPhysicalScratchPad, 0x00010000, SCRATCHPAD_SIZE, 0},
{NULL, &m_pUncachedScratchPad, 0x40010000, SCRATCHPAD_SIZE, MV_MIRROR_PREVIOUS},
2012-11-01 15:19:01 +00:00
{&m_pVRAM, &m_pPhysicalVRAM, 0x04000000, 0x00800000, 0},
{NULL, &m_pUncachedVRAM, 0x44000000, 0x00800000, MV_MIRROR_PREVIOUS},
{&m_pRAM, &m_pPhysicalRAM, 0x08000000, g_MemorySize, MV_IS_PRIMARY_RAM}, // only from 0x08800000 is it usable (last 24 megs)
{NULL, &m_pUncachedRAM, 0x48000000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_PRIMARY_RAM},
{NULL, &m_pKernelRAM, 0x88000000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_PRIMARY_RAM},
// Starts at memory + 31 MB.
{&m_pRAM2, &m_pPhysicalRAM2, 0x09F00000, g_MemorySize, MV_IS_EXTRA1_RAM},
{NULL, &m_pUncachedRAM2, 0x49F00000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_EXTRA1_RAM},
{NULL, &m_pKernelRAM2, 0x89F00000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_EXTRA1_RAM},
// Starts at memory + 31 * 2 MB.
{&m_pRAM3, &m_pPhysicalRAM3, 0x0BE00000, g_MemorySize, MV_IS_EXTRA2_RAM},
{NULL, &m_pUncachedRAM3, 0x4BE00000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_EXTRA2_RAM},
{NULL, &m_pKernelRAM3, 0x8BE00000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_EXTRA2_RAM},
2012-11-01 15:19:01 +00:00
// TODO: There are a few swizzled mirrors of VRAM, not sure about the best way to
// implement those.
};
static const int num_views = sizeof(views) / sizeof(MemoryView);
void Init()
2012-11-01 15:19:01 +00:00
{
int flags = 0;
// This mask is used ONLY after validating the address is in the correct range.
2013-09-09 07:35:31 +00:00
// So let's just use a fixed mask to remove the uncached/user memory bits.
// Using (Memory::g_MemorySize - 1) won't work for e.g. 0x04C00000.
Memory::g_MemoryMask = 0x07FFFFFF;
// On some 32 bit platforms, you can only map < 32 megs at a time.
const static int MAX_MMAP_SIZE = 31 * 1024 * 1024;
2013-12-11 10:00:01 +00:00
_dbg_assert_msg_(MEMMAP, g_MemorySize < MAX_MMAP_SIZE * 3, "ACK - too much memory for three mmap views.");
for (size_t i = 0; i < ARRAY_SIZE(views); i++) {
if (views[i].flags & MV_IS_PRIMARY_RAM)
views[i].size = std::min((int)g_MemorySize, MAX_MMAP_SIZE);
if (views[i].flags & MV_IS_EXTRA1_RAM)
views[i].size = std::min(std::max((int)g_MemorySize - MAX_MMAP_SIZE, 0), MAX_MMAP_SIZE);
if (views[i].flags & MV_IS_EXTRA2_RAM)
views[i].size = std::min(std::max((int)g_MemorySize - MAX_MMAP_SIZE * 2, 0), MAX_MMAP_SIZE);
}
2012-11-01 15:19:01 +00:00
base = MemoryMap_Setup(views, num_views, flags, &g_arena);
INFO_LOG(MEMMAP, "Memory system initialized. RAM at %p (mirror at 0 @ %p, uncached @ %p)",
m_pRAM, m_pPhysicalRAM, m_pUncachedRAM);
}
void DoState(PointerWrap &p)
{
auto s = p.Section("Memory", 1, 2);
if (!s)
return;
if (s < 2) {
if (!g_RemasterMode)
g_MemorySize = RAM_NORMAL_SIZE;
g_PSPModel = PSP_MODEL_FAT;
} else {
p.Do(g_PSPModel);
p.DoMarker("PSPModel");
if (!g_RemasterMode)
g_MemorySize = g_PSPModel == PSP_MODEL_FAT ? RAM_NORMAL_SIZE : RAM_DOUBLE_SIZE;
}
p.DoArray(GetPointer(PSP_GetKernelMemoryBase()), g_MemorySize);
2012-11-01 15:19:01 +00:00
p.DoMarker("RAM");
2012-11-01 15:19:01 +00:00
p.DoArray(m_pVRAM, VRAM_SIZE);
p.DoMarker("VRAM");
p.DoArray(m_pScratchPad, SCRATCHPAD_SIZE);
p.DoMarker("ScratchPad");
}
void Shutdown()
{
u32 flags = 0;
MemoryMap_Shutdown(views, num_views, flags, &g_arena);
g_arena.ReleaseSpace();
base = NULL;
2013-12-09 12:45:17 +00:00
DEBUG_LOG(MEMMAP, "Memory system shut down.");
2012-11-01 15:19:01 +00:00
}
void Clear()
{
if (m_pRAM)
memset(GetPointerUnchecked(PSP_GetKernelMemoryBase()), 0, g_MemorySize);
2012-11-01 15:19:01 +00:00
if (m_pScratchPad)
memset(m_pScratchPad, 0, SCRATCHPAD_SIZE);
if (m_pVRAM)
memset(m_pVRAM, 0, VRAM_SIZE);
}
Opcode Read_Instruction(u32 address, bool resolveReplacements)
2012-11-01 15:19:01 +00:00
{
Opcode inst = Opcode(Read_U32(address));
if (MIPS_IS_RUNBLOCK(inst.encoding) && MIPSComp::jit) {
JitBlockCache *bc = MIPSComp::jit->GetBlockCache();
2013-12-10 12:06:57 +00:00
int block_num = bc->GetBlockNumberFromEmuHackOp(inst, true);
if (block_num >= 0) {
inst = bc->GetOriginalFirstOp(block_num);
if (resolveReplacements && MIPS_IS_REPLACEMENT(inst)) {
u32 op;
if (GetReplacedOpAt(address, &op)) {
if (MIPS_IS_EMUHACK(op)) {
ERROR_LOG(HLE,"WTF 1");
return Opcode(op);
} else {
return Opcode(op);
}
} else {
2013-12-30 00:08:06 +00:00
ERROR_LOG(HLE, "Replacement, but no replacement op? %08x", inst.encoding);
}
}
return inst;
} else {
return inst;
}
} else if (MIPS_IS_REPLACEMENT(inst.encoding)) {
u32 op;
if (GetReplacedOpAt(address, &op)) {
if (MIPS_IS_EMUHACK(op)) {
ERROR_LOG(HLE,"WTF 2");
return Opcode(op);
} else {
return Opcode(op);
}
} else {
return inst;
}
} else {
2012-11-01 15:19:01 +00:00
return inst;
}
2012-11-01 15:19:01 +00:00
}
Opcode Read_Opcode_JIT(u32 address)
2012-11-01 15:19:01 +00:00
{
Opcode inst = Opcode(Read_U32(address));
if (MIPS_IS_RUNBLOCK(inst.encoding) && MIPSComp::jit) {
JitBlockCache *bc = MIPSComp::jit->GetBlockCache();
int block_num = bc->GetBlockNumberFromEmuHackOp(inst, true);
if (block_num >= 0) {
return bc->GetOriginalFirstOp(block_num);
} else {
return inst;
}
} else {
return inst;
}
2012-11-01 15:19:01 +00:00
}
// WARNING! No checks!
// We assume that _Address is cached
void Write_Opcode_JIT(const u32 _Address, const Opcode _Value)
2012-11-01 15:19:01 +00:00
{
Memory::WriteUnchecked_U32(_Value.encoding, _Address);
2012-11-01 15:19:01 +00:00
}
void Memset(const u32 _Address, const u8 _iValue, const u32 _iLength)
{
2012-11-01 15:19:01 +00:00
u8 *ptr = GetPointer(_Address);
if (ptr != NULL) {
memset(ptr, _iValue, _iLength);
2012-11-01 15:19:01 +00:00
}
else
{
for (size_t i = 0; i < _iLength; i++)
2012-11-05 14:41:37 +00:00
Write_U8(_iValue, (u32)(_Address + i));
2012-11-01 15:19:01 +00:00
}
#ifndef USING_GLES2
CBreakPoints::ExecMemCheck(_Address, true, _iLength, currentMIPS->pc);
#endif
2012-11-01 15:19:01 +00:00
}
const char *GetAddressName(u32 address)
{
// TODO, follow GetPointer
return "[mem]";
}
} // namespace