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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/common.h"
#include "core/mem_map.h"
#include "core/hw/hw.h"
#include "hle/hle.h"
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 >= FCRAM_PADDR) && (addr < (FCRAM_PADDR_END))) {
return (addr & FCRAM_MASK) | 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 (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 ((vaddr & 0xFF000000) == 0x10000000 || (vaddr & 0xFF000000) == 0x1E000000) {
HW::Read<T>(var, vaddr);
// FCRAM - GSP heap
} else if ((vaddr > HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
var = *((const T*)&g_heap_gsp[vaddr & HEAP_GSP_MASK]);
// FCRAM - application heap
} else if ((vaddr > HEAP_VADDR) && (vaddr < HEAP_VADDR_END)) {
var = *((const T*)&g_heap[vaddr & HEAP_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, 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 (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 ((vaddr & 0xFF000000) == 0x10000000 || (vaddr & 0xFF000000) == 0x1E000000) {
HW::Write<T>(vaddr, data);
// FCRAM - GSP heap
} else if ((vaddr > HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
*(T*)&g_heap_gsp[vaddr & HEAP_GSP_MASK] = data;
// FCRAM - application heap
} else if ((vaddr > HEAP_VADDR) && (vaddr < HEAP_VADDR_END)) {
*(T*)&g_heap[vaddr & HEAP_MASK] = data;
} else if ((vaddr & 0xFF000000) == 0x14000000) {
_assert_msg_(MEMMAP, false, "umimplemented write to GSP heap");
} else if ((vaddr & 0xFFF00000) == 0x1EC00000) {
_assert_msg_(MEMMAP, false, "umimplemented write to IO registers");
} else if ((vaddr & 0xFF000000) == 0x1F000000) {
_assert_msg_(MEMMAP, false, "umimplemented write to VRAM");
} else if ((vaddr & 0xFFF00000) == 0x1FF00000) {
_assert_msg_(MEMMAP, false, "umimplemented write to DSP memory");
} else if ((vaddr & 0xFFFF0000) == 0x1FF80000) {
_assert_msg_(MEMMAP, false, "umimplemented write to Configuration Memory");
} else if ((vaddr & 0xFFFFF000) == 0x1FF81000) {
_assert_msg_(MEMMAP, false, "umimplemented write to shared page");
// Error out...
} else {
_assert_msg_(MEMMAP, false, "unknown Write%d 0x%08X @ 0x%08X", sizeof(data) * 8,
data, vaddr);
}
}
u8 *GetPointer(const u32 addr) {
const u32 vaddr = _AddressPhysicalToVirtual(addr);
// FCRAM - GSP heap
if ((vaddr > HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
return g_heap_gsp + (vaddr & HEAP_GSP_MASK);
// FCRAM - application heap
} else if ((vaddr > HEAP_VADDR) && (vaddr < HEAP_VADDR_END)) {
return g_heap + (vaddr & HEAP_MASK);
} else {
ERROR_LOG(MEMMAP, "Unknown GetPointer @ 0x%08x", vaddr);
return 0;
}
}
u8 Read8(const u32 addr) {
u8 _var = 0;
_Read<u8>(_var, addr);
return (u8)_var;
}
u16 Read16(const u32 addr) {
u16_le _var = 0;
_Read<u16_le>(_var, addr);
return (u16)_var;
}
u32 Read32(const u32 addr) {
u32_le _var = 0;
_Read<u32_le>(_var, addr);
return _var;
}
u64 Read64(const u32 addr) {
u64_le _var = 0;
_Read<u64_le>(_var, addr);
return _var;
}
u32 Read8_ZX(const u32 addr) {
return (u32)Read8(addr);
}
u32 Read16_ZX(const u32 addr) {
return (u32)Read16(addr);
}
void Write8(const u32 addr, const u8 data) {
_Write<u8>(addr, data);
}
void Write16(const u32 addr, const u16 data) {
_Write<u16_le>(addr, data);
}
void Write32(const u32 addr, const u32 data) {
_Write<u32_le>(addr, data);
}
void Write64(const u32 addr, const u64 data) {
_Write<u64_le>(addr, data);
}
} // namespace
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