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https://github.com/shadps4-emu/shadPS4.git
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76 lines
1.9 KiB
C++
76 lines
1.9 KiB
C++
#include "../Core/PS4/Loader/Elf.h"
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#include "Memory.h"
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#ifdef _WIN64
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#include <windows.h>
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#else
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#include <sys/mman.h>
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#endif
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#if !defined(_WIN64)
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enum PosixPageProtection
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{
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PAGE_NOACCESS = 0,
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PAGE_READONLY = PROT_READ,
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PAGE_READWRITE = PROT_READ | PROT_WRITE,
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PAGE_EXECUTE = PROT_EXEC,
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PAGE_EXECUTE_READ = PROT_EXEC | PROT_READ,
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PAGE_EXECUTE_READWRITE = PROT_EXEC | PROT_READ | PROT_WRITE
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};
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#endif
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#include "../Util/Log.h"
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namespace Memory
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{
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namespace VirtualMemory {
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static u32 convertMemoryMode(MemoryMode mode)
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{
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switch (mode)
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{
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case MemoryMode::Read: return PAGE_READONLY;
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case MemoryMode::Write:
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case MemoryMode::ReadWrite: return PAGE_READWRITE;
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case MemoryMode::Execute: return PAGE_EXECUTE;
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case MemoryMode::ExecuteRead: return PAGE_EXECUTE_READ;
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case MemoryMode::ExecuteWrite:
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case MemoryMode::ExecuteReadWrite: return PAGE_EXECUTE_READWRITE;
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case MemoryMode::NoAccess: return PAGE_NOACCESS;
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default:
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return PAGE_NOACCESS;
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}
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}
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u64 memory_alloc(u64 address, u64 size, MemoryMode mode)
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{
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#ifdef _WIN64
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auto ptr = reinterpret_cast<uintptr_t>(VirtualAlloc(reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)),
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size,
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static_cast<DWORD>(MEM_COMMIT) | static_cast<DWORD>(MEM_RESERVE),
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convertMemoryMode(mode)));
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if (ptr == 0)
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{
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auto err = static_cast<u32>(GetLastError());
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LOG_ERROR_IF(true, "VirtualAlloc() failed: 0x{:X}\n", err);
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}
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#else
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auto ptr = reinterpret_cast<uintptr_t>(mmap(reinterpret_cast<void *>(static_cast<uintptr_t>(address)),
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size,
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PROT_EXEC | PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE,
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-1,
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0));
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if (ptr == reinterpret_cast<uintptr_t>MAP_FAILED)
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{
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LOG_ERROR_IF(true, "mmap() failed: {}\n", std::strerror(errno));
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}
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#endif
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return ptr;
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}
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}
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}
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