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placeholder for making Memory and Timer classes portable

This commit is contained in:
georgemoralis 2023-08-03 11:29:14 +03:00
parent 0f85cbe54f
commit 1cd0489dfe
2 changed files with 137 additions and 119 deletions
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217
src/Core/Memory.cpp
View File

@ -1,127 +1,122 @@
#include "../Core/PS4/Loader/Elf.h"
#include "Memory.h"
#include "../Core/PS4/Loader/Elf.h"
#ifdef _WIN64
#include <windows.h>
#include <windows.h>
#else
#include <sys/mman.h>
#include <sys/mman.h>
#endif
#if !defined(_WIN64)
enum PosixPageProtection
{
PAGE_NOACCESS = 0,
PAGE_READONLY = PROT_READ,
PAGE_READWRITE = PROT_READ | PROT_WRITE,
PAGE_EXECUTE = PROT_EXEC,
PAGE_EXECUTE_READ = PROT_EXEC | PROT_READ,
enum PosixPageProtection {
PAGE_NOACCESS = 0,
PAGE_READONLY = PROT_READ,
PAGE_READWRITE = PROT_READ | PROT_WRITE,
PAGE_EXECUTE = PROT_EXEC,
PAGE_EXECUTE_READ = PROT_EXEC | PROT_READ,
PAGE_EXECUTE_READWRITE = PROT_EXEC | PROT_READ | PROT_WRITE
};
#endif
#include "../Util/Log.h"
namespace Memory
{
namespace VirtualMemory {
static u32 convertMemoryMode(MemoryMode mode)
{
switch (mode)
{
case MemoryMode::Read: return PAGE_READONLY;
case MemoryMode::Write:
case MemoryMode::ReadWrite: return PAGE_READWRITE;
namespace Memory {
namespace VirtualMemory {
static u32 convertMemoryMode(MemoryMode mode) {
switch (mode) {
case MemoryMode::Read: return PAGE_READONLY;
case MemoryMode::Write:
case MemoryMode::ReadWrite: return PAGE_READWRITE;
case MemoryMode::Execute: return PAGE_EXECUTE;
case MemoryMode::ExecuteRead: return PAGE_EXECUTE_READ;
case MemoryMode::ExecuteWrite:
case MemoryMode::ExecuteReadWrite: return PAGE_EXECUTE_READWRITE;
case MemoryMode::Execute: return PAGE_EXECUTE;
case MemoryMode::ExecuteRead: return PAGE_EXECUTE_READ;
case MemoryMode::ExecuteWrite:
case MemoryMode::ExecuteReadWrite: return PAGE_EXECUTE_READWRITE;
case MemoryMode::NoAccess: return PAGE_NOACCESS;
default:
return PAGE_NOACCESS;
}
}
static MemoryMode convertMemoryMode(u32 mode) {
switch (mode) {
case PAGE_NOACCESS: return MemoryMode::NoAccess;
case PAGE_READONLY: return MemoryMode::Read;
case PAGE_READWRITE: return MemoryMode::ReadWrite;
case PAGE_EXECUTE: return MemoryMode::Execute;
case PAGE_EXECUTE_READ: return MemoryMode::ExecuteRead;
case PAGE_EXECUTE_READWRITE: return MemoryMode::ExecuteReadWrite;
default: return MemoryMode::NoAccess;
}
}
u64 memory_alloc(u64 address, u64 size, MemoryMode mode)
{
#ifdef _WIN64
auto ptr = reinterpret_cast<uintptr_t>(VirtualAlloc(reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)),
size,
static_cast<DWORD>(MEM_COMMIT) | static_cast<DWORD>(MEM_RESERVE),
convertMemoryMode(mode)));
if (ptr == 0)
{
auto err = static_cast<u32>(GetLastError());
LOG_ERROR_IF(true, "VirtualAlloc() failed: 0x{:X}\n", err);
}
#else
auto ptr = reinterpret_cast<uintptr_t>(mmap(reinterpret_cast<void *>(static_cast<uintptr_t>(address)),
size,
PROT_EXEC | PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE,
-1,
0));
if (ptr == reinterpret_cast<uintptr_t>MAP_FAILED)
{
LOG_ERROR_IF(true, "mmap() failed: {}\n", std::strerror(errno));
}
#endif
return ptr;
}
bool memory_protect(u64 address, u64 size, MemoryMode mode, MemoryMode* old_mode) {
DWORD old_protect = 0;
if (VirtualProtect(reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)), size, convertMemoryMode(mode), &old_protect) == 0) {
auto err = static_cast<u32>(GetLastError());
LOG_ERROR_IF(true, "VirtualProtect() failed: 0x{:X}\n", err);
return false;
}
if (old_mode != nullptr) {
*old_mode = convertMemoryMode(old_protect);
}
return true;
}
bool memory_flush(u64 address, u64 size) {
if (::FlushInstructionCache(GetCurrentProcess(), reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)), size) == 0) {
auto err = static_cast<u32>(GetLastError());
LOG_ERROR_IF(true, "FlushInstructionCache() failed: 0x{:X}\n", err);
return false;
}
return true;
}
bool memory_patch(u64 vaddr, u64 value) {
MemoryMode old_mode{};
memory_protect(vaddr, 8, MemoryMode::ReadWrite, &old_mode);
auto* ptr = reinterpret_cast<uint64_t*>(vaddr);
bool ret = (*ptr != value);
*ptr = value;
memory_protect(vaddr, 8, old_mode, nullptr);
//if mode is executable flush it so insure that cpu finds it
if ((old_mode == MemoryMode::Execute || old_mode == MemoryMode::ExecuteRead || old_mode == MemoryMode::ExecuteWrite ||
old_mode == MemoryMode::ExecuteReadWrite)) {
memory_flush(vaddr, 8);
}
return ret;
}
}
case MemoryMode::NoAccess: return PAGE_NOACCESS;
default: return PAGE_NOACCESS;
}
}
static MemoryMode convertMemoryMode(u32 mode) {
switch (mode) {
case PAGE_NOACCESS: return MemoryMode::NoAccess;
case PAGE_READONLY: return MemoryMode::Read;
case PAGE_READWRITE: return MemoryMode::ReadWrite;
case PAGE_EXECUTE: return MemoryMode::Execute;
case PAGE_EXECUTE_READ: return MemoryMode::ExecuteRead;
case PAGE_EXECUTE_READWRITE: return MemoryMode::ExecuteReadWrite;
default: return MemoryMode::NoAccess;
}
}
u64 memory_alloc(u64 address, u64 size, MemoryMode mode) {
#ifdef _WIN64
auto ptr = reinterpret_cast<uintptr_t>(VirtualAlloc(reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)), size,
static_cast<DWORD>(MEM_COMMIT) | static_cast<DWORD>(MEM_RESERVE), convertMemoryMode(mode)));
if (ptr == 0) {
auto err = static_cast<u32>(GetLastError());
LOG_ERROR_IF(true, "VirtualAlloc() failed: 0x{:X}\n", err);
}
#else
auto ptr = reinterpret_cast<uintptr_t>(
mmap(reinterpret_cast<void*>(static_cast<uintptr_t>(address)), size, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0));
if (ptr == reinterpret_cast<uintptr_t> MAP_FAILED) {
LOG_ERROR_IF(true, "mmap() failed: {}\n", std::strerror(errno));
}
#endif
return ptr;
}
bool memory_protect(u64 address, u64 size, MemoryMode mode, MemoryMode* old_mode) {
#ifdef _WIN64
DWORD old_protect = 0;
if (VirtualProtect(reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)), size, convertMemoryMode(mode), &old_protect) == 0) {
auto err = static_cast<u32>(GetLastError());
LOG_ERROR_IF(true, "VirtualProtect() failed: 0x{:X}\n", err);
return false;
}
if (old_mode != nullptr) {
*old_mode = convertMemoryMode(old_protect);
}
return true;
#else
#error Unimplement memory_protect function
#endif
}
bool memory_flush(u64 address, u64 size) {
#ifdef _WIN64
if (::FlushInstructionCache(GetCurrentProcess(), reinterpret_cast<LPVOID>(static_cast<uintptr_t>(address)), size) == 0) {
auto err = static_cast<u32>(GetLastError());
LOG_ERROR_IF(true, "FlushInstructionCache() failed: 0x{:X}\n", err);
return false;
}
return true;
#else // linux probably doesn't have something similar
return true;
#endif
}
bool memory_patch(u64 vaddr, u64 value) {
MemoryMode old_mode{};
memory_protect(vaddr, 8, MemoryMode::ReadWrite, &old_mode);
auto* ptr = reinterpret_cast<uint64_t*>(vaddr);
bool ret = (*ptr != value);
*ptr = value;
memory_protect(vaddr, 8, old_mode, nullptr);
// if mode is executable flush it so insure that cpu finds it
if ((old_mode == MemoryMode::Execute || old_mode == MemoryMode::ExecuteRead || old_mode == MemoryMode::ExecuteWrite ||
old_mode == MemoryMode::ExecuteReadWrite)) {
memory_flush(vaddr, 8);
}
return ret;
}
} // namespace VirtualMemory
} // namespace Memory

39
src/Lib/Timer.cpp
View File

@ -1,33 +1,50 @@
#include "Timer.h"
#ifdef _WIN64
#include <windows.h>
#endif
Lib::Timer::Timer() {
#ifdef _WIN64
LARGE_INTEGER f;
QueryPerformanceFrequency(&f);
m_Frequency = f.QuadPart;
#else
#error Unimplemented
#endif
}
void Lib::Timer::Start() {
#ifdef _WIN64
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
m_StartTime = c.QuadPart;
#else
#error Unimplemented
#endif
m_is_timer_paused = false;
}
void Lib::Timer::Pause() {
#ifdef _WIN64
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
m_PauseTime = c.QuadPart;
#else
#error Unimplemented
#endif
m_is_timer_paused = true;
}
void Lib::Timer::Resume() {
u64 current_time = 0;
#ifdef _WIN64
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
current_time = c.QuadPart;
#else
#error Unimplemented
#endif
m_StartTime += current_time - m_PauseTime;
m_is_timer_paused = false;
}
@ -40,11 +57,13 @@ double Lib::Timer::GetTimeMsec() const {
}
u64 current_time = 0;
#ifdef _WIN64
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
current_time = c.QuadPart;
#else
#error Unimplemented
#endif
return 1000.0 * (static_cast<double>(current_time - m_StartTime)) / static_cast<double>(m_Frequency);
}
@ -54,11 +73,13 @@ double Lib::Timer::GetTimeSec() const {
}
u64 current_time = 0;
#ifdef _WIN64
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
current_time = c.QuadPart;
#else
#error Unimplemented
#endif
return (static_cast<double>(current_time - m_StartTime)) / static_cast<double>(m_Frequency);
}
@ -68,11 +89,13 @@ u64 Lib::Timer::GetTicks() const {
}
u64 current_time = 0;
#ifdef _WIN64
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
current_time = c.QuadPart;
#else
#error Unimplemented
#endif
return (current_time - m_StartTime);
}