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author | bunnei <ericbunnie@gmail.com> | 2014-04-18 00:40:42 +0200 |
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committer | bunnei <ericbunnie@gmail.com> | 2014-04-18 00:40:42 +0200 |
commit | ae99574b6dd2f21960bd42e0bb9a1978e18413d4 (patch) | |
tree | b3b03484e87c67ed6008eb142706f2b126f75197 /src/core/mem_map_funcs.cpp | |
parent | fixed framebuffer color order (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/mem_map_funcs.cpp | 144 |
1 files changed, 48 insertions, 96 deletions
diff --git a/src/core/mem_map_funcs.cpp b/src/core/mem_map_funcs.cpp index 3e85a119f..bb83855fe 100644 --- a/src/core/mem_map_funcs.cpp +++ b/src/core/mem_map_funcs.cpp @@ -10,154 +10,106 @@ namespace Memory { +/// Convert a physical address to virtual address +u32 _AddressPhysicalToVirtual(const u32 addr) { + // Our memory interface read/write functions assume virtual addresses. Put any physical address + // to virtual address translations here. This is obviously quite hacky... But we're not doing + // any MMU emulation yet or anything + if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) { + return (addr & MEM_FCRAM_MASK) | MEM_FCRAM_VADDR; + } + return addr; +} + template <typename T> inline void _Read(T &var, const u32 addr) { // TODO: Figure out the fastest order of tests for both read and write (they are probably different). // TODO: Make sure this represents the mirrors in a correct way. // Could just do a base-relative read, too.... TODO + const u32 vaddr = _AddressPhysicalToVirtual(addr); // Memory allocated for HLE use that can be addressed from the emulated application // The primary use of this is sharing a commandbuffer between the HLE OS (syscore) and the LLE // core running the user application (appcore) - if (addr >= HLE::CMD_BUFFER_ADDR && addr < HLE::CMD_BUFFER_ADDR_END) { - HLE::Read<T>(var, addr); + if (vaddr >= HLE::CMD_BUFFER_ADDR && vaddr < HLE::CMD_BUFFER_ADDR_END) { + HLE::Read<T>(var, vaddr); // Hardware I/O register reads // 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space - } else if ((addr & 0xFF000000) == 0x10000000 || (addr & 0xFF000000) == 0x1E000000) { - HW::Read<T>(var, addr); - - // FCRAM virtual address reads - } else if ((addr & 0x3E000000) == 0x08000000) { - var = *((const T*)&g_fcram[addr & MEM_FCRAM_MASK]); - - // Scratchpad memory - } else if (addr > MEM_SCRATCHPAD_VADDR && addr <= (MEM_SCRATCHPAD_VADDR + MEM_SCRATCHPAD_SIZE)) { - var = *((const T*)&g_scratchpad[addr & MEM_SCRATCHPAD_MASK]); - - /*else if ((addr & 0x3F800000) == 0x04000000) { - var = *((const T*)&m_pVRAM[addr & VRAM_MASK]); - }*/ - - // HACK(bunnei): There is no layer yet to translate virtual addresses to physical addresses. - // Until we progress far enough along, we'll accept all physical address reads here. I think - // that this is typically a corner-case from usermode software unless they are trying to do - // bare-metal things (e.g. early 3DS homebrew writes directly to the FB @ 0x20184E60, etc. - } else if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) { - var = *((const T*)&g_fcram[addr & MEM_FCRAM_MASK]); + } else if ((vaddr & 0xFF000000) == 0x10000000 || (vaddr & 0xFF000000) == 0x1E000000) { + HW::Read<T>(var, vaddr); + + // FCRAM + } else if ((vaddr > MEM_FCRAM_VADDR) && (vaddr < MEM_FCRAM_VADDR_END)) { + var = *((const T*)&g_fcram[vaddr & MEM_FCRAM_MASK]); + + /*else if ((vaddr & 0x3F800000) == 0x04000000) { + var = *((const T*)&m_pVRAM[vaddr & VRAM_MASK]);*/ } else { - _assert_msg_(MEMMAP, false, "unknown Read%d @ 0x%08X", sizeof(var) * 8, addr); + _assert_msg_(MEMMAP, false, "unknown Read%d @ 0x%08X", sizeof(var) * 8, vaddr); } } template <typename T> inline void _Write(u32 addr, const T data) { + u32 vaddr = _AddressPhysicalToVirtual(addr); // Memory allocated for HLE use that can be addressed from the emulated application // The primary use of this is sharing a commandbuffer between the HLE OS (syscore) and the LLE // core running the user application (appcore) - if (addr >= HLE::CMD_BUFFER_ADDR && addr < HLE::CMD_BUFFER_ADDR_END) { - HLE::Write<T>(addr, data); + if (vaddr >= HLE::CMD_BUFFER_ADDR && vaddr < HLE::CMD_BUFFER_ADDR_END) { + HLE::Write<T>(vaddr, data); // Hardware I/O register writes // 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space - } else if ((addr & 0xFF000000) == 0x10000000 || (addr & 0xFF000000) == 0x1E000000) { - HW::Write<T>(addr, data); + } else if ((vaddr & 0xFF000000) == 0x10000000 || (vaddr & 0xFF000000) == 0x1E000000) { + HW::Write<T>(vaddr, data); // ExeFS:/.code is loaded here: - } else if ((addr & 0xFFF00000) == 0x00100000) { + } else if ((vaddr & 0xFFF00000) == 0x00100000) { // TODO(ShizZy): This is dumb... handle correctly. From 3DBrew: // http://3dbrew.org/wiki/Memory_layout#ARM11_User-land_memory_regions // The ExeFS:/.code is loaded here, executables must be loaded to the 0x00100000 region when // the exheader "special memory" flag is clear. The 0x03F00000-byte size restriction only // applies when this flag is clear. Executables are usually loaded to 0x14000000 when the // exheader "special memory" flag is set, however this address can be arbitrary. - *(T*)&g_fcram[addr & MEM_FCRAM_MASK] = data; - - // Scratchpad memory - } else if (addr > MEM_SCRATCHPAD_VADDR && addr <= (MEM_SCRATCHPAD_VADDR + MEM_SCRATCHPAD_SIZE)) { - *(T*)&g_scratchpad[addr & MEM_SCRATCHPAD_MASK] = data; + *(T*)&g_fcram[vaddr & MEM_FCRAM_MASK] = data; - // Heap mapped by ControlMemory: - } else if ((addr & 0x3E000000) == 0x08000000) { - // TODO(ShizZy): Writes to this virtual address should be put in physical memory at FCRAM + GSP - // heap size... the following is writing to FCRAM + 0, which is actually supposed to be the - // application's GSP heap - *(T*)&g_fcram[addr & MEM_FCRAM_MASK] = data; + // FCRAM + } else if ((vaddr > MEM_FCRAM_VADDR) && (vaddr < MEM_FCRAM_VADDR_END)) { + *(T*)&g_fcram[vaddr & MEM_FCRAM_MASK] = data; - } else if ((addr & 0xFF000000) == 0x14000000) { + } else if ((vaddr & 0xFF000000) == 0x14000000) { _assert_msg_(MEMMAP, false, "umimplemented write to GSP heap"); - } else if ((addr & 0xFFF00000) == 0x1EC00000) { + } else if ((vaddr & 0xFFF00000) == 0x1EC00000) { _assert_msg_(MEMMAP, false, "umimplemented write to IO registers"); - } else if ((addr & 0xFF000000) == 0x1F000000) { + } else if ((vaddr & 0xFF000000) == 0x1F000000) { _assert_msg_(MEMMAP, false, "umimplemented write to VRAM"); - } else if ((addr & 0xFFF00000) == 0x1FF00000) { + } else if ((vaddr & 0xFFF00000) == 0x1FF00000) { _assert_msg_(MEMMAP, false, "umimplemented write to DSP memory"); - } else if ((addr & 0xFFFF0000) == 0x1FF80000) { + } else if ((vaddr & 0xFFFF0000) == 0x1FF80000) { _assert_msg_(MEMMAP, false, "umimplemented write to Configuration Memory"); - } else if ((addr & 0xFFFFF000) == 0x1FF81000) { + } else if ((vaddr & 0xFFFFF000) == 0x1FF81000) { _assert_msg_(MEMMAP, false, "umimplemented write to shared page"); - // HACK(bunnei): There is no layer yet to translate virtual addresses to physical addresses. - // Until we progress far enough along, we'll accept all physical address writes here. I think - // that this is typically a corner-case from usermode software unless they are trying to do - // bare-metal things (e.g. early 3DS homebrew writes directly to the FB @ 0x20184E60, etc. - } else if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) { - *(T*)&g_fcram[addr & MEM_FCRAM_MASK] = data; - // Error out... } else { _assert_msg_(MEMMAP, false, "unknown Write%d 0x%08X @ 0x%08X", sizeof(data) * 8, - data, addr); - } -} - -bool IsValidAddress(const u32 addr) { - if ((addr & 0x3E000000) == 0x08000000) { - return true; - } else if ((addr & 0x3F800000) == 0x04000000) { - return true; - } else if ((addr & 0xBFFF0000) == 0x00010000) { - return true; - } else if ((addr & 0x3F000000) >= 0x08000000 && (addr & 0x3F000000) < 0x08000000 + MEM_FCRAM_MASK) { - return true; - } else { - return false; + data, vaddr); } } u8 *GetPointer(const u32 addr) { - // TODO(bunnei): Just a stub for now... ImplementMe! - if ((addr & 0x3E000000) == 0x08000000) { - return g_fcram + (addr & MEM_FCRAM_MASK); - - // HACK(bunnei): There is no layer yet to translate virtual addresses to physical addresses. - // Until we progress far enough along, we'll accept all physical address reads here. I think - // that this is typically a corner-case from usermode software unless they are trying to do - // bare-metal things (e.g. early 3DS homebrew writes directly to the FB @ 0x20184E60, etc. - } else if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) { - return g_fcram + (addr & MEM_FCRAM_MASK); - - //else if ((addr & 0x3F800000) == 0x04000000) { - // return g_vram + (addr & MEM_VRAM_MASK); - //} - //else if ((addr & 0x3F000000) >= 0x08000000 && (addr & 0x3F000000) < 0x08000000 + g_MemorySize) { - // return m_pRAM + (addr & g_MemoryMask); - //} + const u32 vaddr = _AddressPhysicalToVirtual(addr); + + // FCRAM + if ((vaddr > MEM_FCRAM_VADDR) && (vaddr < MEM_FCRAM_VADDR_END)) { + return g_fcram + (vaddr & MEM_FCRAM_MASK); + } else { - //ERROR_LOG(MEMMAP, "Unknown GetPointer %08x PC %08x LR %08x", addr, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]); - ERROR_LOG(MEMMAP, "Unknown GetPointer %08x", addr); - static bool reported = false; - //if (!reported) { - // Reporting::ReportMessage("Unknown GetPointer %08x PC %08x LR %08x", addr, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]); - // reported = true; - //} - //if (!g_Config.bIgnoreBadMemAccess) { - // Core_EnableStepping(true); - // host->SetDebugMode(true); - //} + ERROR_LOG(MEMMAP, "Unknown GetPointer @ 0x%08x", vaddr); return 0; } } |