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Diffstat (limited to 'src/core/memory.h')
-rw-r--r-- | src/core/memory.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/core/memory.h b/src/core/memory.h new file mode 100644 index 000000000..5ae7784e0 --- /dev/null +++ b/src/core/memory.h @@ -0,0 +1,125 @@ +// Copyright 2014 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "common/common_types.h" + +namespace Memory { + +const u32 PAGE_SIZE = 0x1000; + +/// Physical memory regions as seen from the ARM11 +enum : PAddr { + /// IO register area + IO_AREA_PADDR = 0x10100000, + IO_AREA_SIZE = 0x01000000, ///< IO area size (16MB) + IO_AREA_PADDR_END = IO_AREA_PADDR + IO_AREA_SIZE, + + /// MPCore internal memory region + MPCORE_RAM_PADDR = 0x17E00000, + MPCORE_RAM_SIZE = 0x00002000, ///< MPCore internal memory size (8KB) + MPCORE_RAM_PADDR_END = MPCORE_RAM_PADDR + MPCORE_RAM_SIZE, + + /// Video memory + VRAM_PADDR = 0x18000000, + VRAM_SIZE = 0x00600000, ///< VRAM size (6MB) + VRAM_PADDR_END = VRAM_PADDR + VRAM_SIZE, + + /// DSP memory + DSP_RAM_PADDR = 0x1FF00000, + DSP_RAM_SIZE = 0x00080000, ///< DSP memory size (512KB) + DSP_RAM_PADDR_END = DSP_RAM_PADDR + DSP_RAM_SIZE, + + /// AXI WRAM + AXI_WRAM_PADDR = 0x1FF80000, + AXI_WRAM_SIZE = 0x00080000, ///< AXI WRAM size (512KB) + AXI_WRAM_PADDR_END = AXI_WRAM_PADDR + AXI_WRAM_SIZE, + + /// Main FCRAM + FCRAM_PADDR = 0x20000000, + FCRAM_SIZE = 0x08000000, ///< FCRAM size (128MB) + FCRAM_PADDR_END = FCRAM_PADDR + FCRAM_SIZE, +}; + +/// Virtual user-space memory regions +enum : VAddr { + /// Where the application text, data and bss reside. + PROCESS_IMAGE_VADDR = 0x00100000, + PROCESS_IMAGE_MAX_SIZE = 0x03F00000, + PROCESS_IMAGE_VADDR_END = PROCESS_IMAGE_VADDR + PROCESS_IMAGE_MAX_SIZE, + + /// Area where IPC buffers are mapped onto. + IPC_MAPPING_VADDR = 0x04000000, + IPC_MAPPING_SIZE = 0x04000000, + IPC_MAPPING_VADDR_END = IPC_MAPPING_VADDR + IPC_MAPPING_SIZE, + + /// Application heap (includes stack). + HEAP_VADDR = 0x08000000, + HEAP_SIZE = 0x08000000, + HEAP_VADDR_END = HEAP_VADDR + HEAP_SIZE, + + /// Area where shared memory buffers are mapped onto. + SHARED_MEMORY_VADDR = 0x10000000, + SHARED_MEMORY_SIZE = 0x04000000, + SHARED_MEMORY_VADDR_END = SHARED_MEMORY_VADDR + SHARED_MEMORY_SIZE, + + /// Maps 1:1 to an offset in FCRAM. Used for HW allocations that need to be linear in physical memory. + LINEAR_HEAP_VADDR = 0x14000000, + LINEAR_HEAP_SIZE = 0x08000000, + LINEAR_HEAP_VADDR_END = LINEAR_HEAP_VADDR + LINEAR_HEAP_SIZE, + + /// Maps 1:1 to the IO register area. + IO_AREA_VADDR = 0x1EC00000, + IO_AREA_VADDR_END = IO_AREA_VADDR + IO_AREA_SIZE, + + /// Maps 1:1 to VRAM. + VRAM_VADDR = 0x1F000000, + VRAM_VADDR_END = VRAM_VADDR + VRAM_SIZE, + + /// Maps 1:1 to DSP memory. + DSP_RAM_VADDR = 0x1FF00000, + DSP_RAM_VADDR_END = DSP_RAM_VADDR + DSP_RAM_SIZE, + + /// Read-only page containing kernel and system configuration values. + CONFIG_MEMORY_VADDR = 0x1FF80000, + CONFIG_MEMORY_SIZE = 0x00001000, + CONFIG_MEMORY_VADDR_END = CONFIG_MEMORY_VADDR + CONFIG_MEMORY_SIZE, + + /// Usually read-only page containing mostly values read from hardware. + SHARED_PAGE_VADDR = 0x1FF81000, + SHARED_PAGE_SIZE = 0x00001000, + SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE, + + // TODO(yuriks): The size of this area is dynamic, the kernel grows + // it as more and more threads are created. For now we'll just use a + // hardcoded value. + /// Area where TLS (Thread-Local Storage) buffers are allocated. + TLS_AREA_VADDR = 0x1FF82000, + TLS_AREA_SIZE = 0x00030000, // Each TLS buffer is 0x200 bytes, allows for 300 threads + TLS_AREA_VADDR_END = TLS_AREA_VADDR + TLS_AREA_SIZE, +}; + +u8 Read8(VAddr addr); +u16 Read16(VAddr addr); +u32 Read32(VAddr addr); +u64 Read64(VAddr addr); + +void Write8(VAddr addr, u8 data); +void Write16(VAddr addr, u16 data); +void Write32(VAddr addr, u32 data); +void Write64(VAddr addr, u64 data); + +void WriteBlock(VAddr addr, const u8* data, size_t size); + +u8* GetPointer(VAddr virtual_address); + +/** + * Gets a pointer to the memory region beginning at the specified physical address. + * + * @note This is currently implemented using PhysicalToVirtualAddress(). + */ +u8* GetPhysicalPointer(PAddr address); + +} |