pcsx2/common/Windows/WinHostSys.cpp

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// SPDX-FileCopyrightText: 2002-2023 PCSX2 Dev Team
// SPDX-License-Identifier: LGPL-3.0+
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#if defined(_WIN32)
#include "common/BitUtils.h"
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#include "common/RedtapeWindows.h"
#include "common/Console.h"
#include "common/HostSys.h"
#include "common/StringUtil.h"
#include "common/AlignedMalloc.h"
#include "common/Assertions.h"
#include "fmt/core.h"
#include "fmt/format.h"
#include <mutex>
static std::recursive_mutex s_exception_handler_mutex;
static PageFaultHandler s_exception_handler_callback;
static void* s_exception_handler_handle;
static bool s_in_exception_handler;
long __stdcall SysPageFaultExceptionFilter(EXCEPTION_POINTERS* eps)
{
// Executing the handler concurrently from multiple threads wouldn't go down well.
std::unique_lock lock(s_exception_handler_mutex);
// Prevent recursive exception filtering.
if (s_in_exception_handler)
return EXCEPTION_CONTINUE_SEARCH;
// Only interested in page faults.
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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if (eps->ExceptionRecord->ExceptionCode != EXCEPTION_ACCESS_VIOLATION)
return EXCEPTION_CONTINUE_SEARCH;
#if defined(_M_AMD64)
void* const exception_pc = reinterpret_cast<void*>(eps->ContextRecord->Rip);
#elif defined(_M_ARM64)
void* const exception_pc = reinterpret_cast<void*>(eps->ContextRecord->Pc);
#else
void* const exception_pc = nullptr;
#endif
const PageFaultInfo pfi{(uptr)exception_pc, (uptr)eps->ExceptionRecord->ExceptionInformation[1]};
s_in_exception_handler = true;
const bool handled = s_exception_handler_callback(pfi);
s_in_exception_handler = false;
return handled ? EXCEPTION_CONTINUE_EXECUTION : EXCEPTION_CONTINUE_SEARCH;
}
bool HostSys::InstallPageFaultHandler(PageFaultHandler handler)
{
std::unique_lock lock(s_exception_handler_mutex);
pxAssertRel(!s_exception_handler_callback, "A page fault handler is already registered.");
if (!s_exception_handler_handle)
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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{
s_exception_handler_handle = AddVectoredExceptionHandler(TRUE, SysPageFaultExceptionFilter);
if (!s_exception_handler_handle)
return false;
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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}
s_exception_handler_callback = handler;
return true;
}
void HostSys::RemovePageFaultHandler(PageFaultHandler handler)
{
std::unique_lock lock(s_exception_handler_mutex);
pxAssertRel(!s_exception_handler_callback || s_exception_handler_callback == handler,
"Not removing the same handler previously registered.");
s_exception_handler_callback = nullptr;
if (s_exception_handler_handle)
{
RemoveVectoredExceptionHandler(s_exception_handler_handle);
s_exception_handler_handle = {};
}
}
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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static DWORD ConvertToWinApi(const PageProtectionMode& mode)
{
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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DWORD winmode = PAGE_NOACCESS;
// Windows has some really bizarre memory protection enumeration that uses bitwise
// numbering (like flags) but is in fact not a flag value. *Someone* from the early
// microsoft days wasn't a very good coder, me thinks. --air
if (mode.CanExecute())
{
winmode = mode.CanWrite() ? PAGE_EXECUTE_READWRITE : PAGE_EXECUTE_READ;
}
else if (mode.CanRead())
{
winmode = mode.CanWrite() ? PAGE_READWRITE : PAGE_READONLY;
}
return winmode;
}
void* HostSys::Mmap(void* base, size_t size, const PageProtectionMode& mode)
{
if (mode.IsNone())
return nullptr;
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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return VirtualAlloc(base, size, MEM_RESERVE | MEM_COMMIT, ConvertToWinApi(mode));
}
void HostSys::Munmap(void* base, size_t size)
{
if (!base)
return;
VirtualFree((void*)base, 0, MEM_RELEASE);
}
void HostSys::MemProtect(void* baseaddr, size_t size, const PageProtectionMode& mode)
{
pxAssert((size & (__pagesize - 1)) == 0);
DWORD OldProtect; // enjoy my uselessness, yo!
if (!VirtualProtect(baseaddr, size, ConvertToWinApi(mode), &OldProtect))
pxFail("VirtualProtect() failed");
}
std::string HostSys::GetFileMappingName(const char* prefix)
{
const unsigned pid = GetCurrentProcessId();
return fmt::format("{}_{}", prefix, pid);
}
void* HostSys::CreateSharedMemory(const char* name, size_t size)
{
return static_cast<void*>(CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
static_cast<DWORD>(size >> 32), static_cast<DWORD>(size), StringUtil::UTF8StringToWideString(name).c_str()));
}
void HostSys::DestroySharedMemory(void* ptr)
{
CloseHandle(static_cast<HANDLE>(ptr));
}
void* HostSys::MapSharedMemory(void* handle, size_t offset, void* baseaddr, size_t size, const PageProtectionMode& mode)
{
void* ret = MapViewOfFileEx(static_cast<HANDLE>(handle), FILE_MAP_READ | FILE_MAP_WRITE,
static_cast<DWORD>(offset >> 32), static_cast<DWORD>(offset), size, baseaddr);
if (!ret)
return nullptr;
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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const DWORD prot = ConvertToWinApi(mode);
if (prot != PAGE_READWRITE)
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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{
DWORD old_prot;
if (!VirtualProtect(ret, size, prot, &old_prot))
pxFail("Failed to protect memory mapping");
Common: reformat (#4720) * common: format AlignedMalloc.cpp * common: format AppTrait.h * common: format Assertions.h * common: format CheckedStaticBox * common: format Console * common: format Dependencies.h * common: format EmbeddedImage * common: format EventSource * common: format Exceptions * common: format FastFormatString.cpp * common: format General.h * common: format InitInterface * common: format MathUtils.h * common: format MemsetFast/MemcpyFast * common: format Mutex.cpp * common: format PageFaultSource.h * common: format Path.h * common: format PathUtils.cpp * common: format Pcsx2Types.h * common: format Perf * common: format PersistentThread.h * common: format RwMutex * common: format SafeArray * common: format ScopedAlloc.h * common: format ScopedPtrMT.h * common: format Semaphore.cpp * common: format StringHelpers * common: format ThreadTools.cpp * common: format Threading.h * common: format ThreadingDialogs * common: format ThreadingInternal.h * common: format TraceLog.h * common: format VirtualMemory.cpp * common: format pxCheckBox * common: format pxEvents.h * common: format pxForwardDefs.h * common: format pxRadioPanel * common: format pxStaticText * common: format pxStreams * common: format pxTranslate.cpp * common: format pxWindowTextWriter.cpp * common: format wxAppWithHelpers * common: format wxBaseTools.h * common: format wxGuiTools * common: format wxHelpers.cpp * common: format Darwin directory * common: format Linux directory * common: format Windows directory * common: format LnxCpuDetect.cpp * common: format WinCpuDetect.cpp * common: format bmi.cpp * common: format cpudetect.cpp * common: format cpu_detect_internal.h * common: format fpu.cpp * common: format groups.cpp * common: format instructions.h * common: format internal.h * common: format jmp.cpp * common: format legacy.cpp * common: format legacy_instructions.h * common: format legacy_internal.h * common: format movs.cpp * common: format simd.cpp * common: format tools.h * common: format x86emitter.cpp * common: format x86types.h * common: format bmi.h * common: format dwshift.h * common: format group1.h group2.h group3.h * common: format incdec.h * common: format jmpcall.h * common: format movs.h * common: format simd_arithmetic.h * common: format simd_comparisons.h * common: format simd_helpers.h * common: format simd_moremovs.h * common: format simd_shufflepack.h * common: format simd_templated_helpers.h * common: format test.h
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}
return ret;
}
void HostSys::UnmapSharedMemory(void* baseaddr, size_t size)
{
if (!UnmapViewOfFile(baseaddr))
pxFail("Failed to unmap shared memory");
}
#ifdef _M_ARM64
void HostSys::FlushInstructionCache(void* address, u32 size)
{
::FlushInstructionCache(GetCurrentProcess(), address, size);
}
#endif
SharedMemoryMappingArea::SharedMemoryMappingArea(u8* base_ptr, size_t size, size_t num_pages)
: m_base_ptr(base_ptr)
, m_size(size)
, m_num_pages(num_pages)
{
m_placeholder_ranges.emplace(0, size);
}
SharedMemoryMappingArea::~SharedMemoryMappingArea()
{
pxAssertRel(m_num_mappings == 0, "No mappings left");
// hopefully this will be okay, and we don't need to coalesce all the placeholders...
if (!VirtualFreeEx(GetCurrentProcess(), m_base_ptr, 0, MEM_RELEASE))
pxFailRel("Failed to release shared memory area");
}
SharedMemoryMappingArea::PlaceholderMap::iterator SharedMemoryMappingArea::FindPlaceholder(size_t offset)
{
if (m_placeholder_ranges.empty())
return m_placeholder_ranges.end();
// this will give us an iterator equal or after page
auto it = m_placeholder_ranges.lower_bound(offset);
if (it == m_placeholder_ranges.end())
{
// check the last page
it = (++m_placeholder_ranges.rbegin()).base();
}
// it's the one we found?
if (offset >= it->first && offset < it->second)
return it;
// otherwise try the one before
if (it == m_placeholder_ranges.begin())
return m_placeholder_ranges.end();
--it;
if (offset >= it->first && offset < it->second)
return it;
else
return m_placeholder_ranges.end();
}
std::unique_ptr<SharedMemoryMappingArea> SharedMemoryMappingArea::Create(size_t size)
{
pxAssertRel(Common::IsAlignedPow2(size, __pagesize), "Size is page aligned");
void* alloc = VirtualAlloc2(GetCurrentProcess(), nullptr, size, MEM_RESERVE | MEM_RESERVE_PLACEHOLDER, PAGE_NOACCESS, nullptr, 0);
if (!alloc)
return nullptr;
return std::unique_ptr<SharedMemoryMappingArea>(new SharedMemoryMappingArea(static_cast<u8*>(alloc), size, size / __pagesize));
}
u8* SharedMemoryMappingArea::Map(void* file_handle, size_t file_offset, void* map_base, size_t map_size, const PageProtectionMode& mode)
{
pxAssert(static_cast<u8*>(map_base) >= m_base_ptr && static_cast<u8*>(map_base) < (m_base_ptr + m_size));
const size_t map_offset = static_cast<u8*>(map_base) - m_base_ptr;
pxAssert(Common::IsAlignedPow2(map_offset, __pagesize));
pxAssert(Common::IsAlignedPow2(map_size, __pagesize));
// should be a placeholder. unless there's some other mapping we didn't free.
PlaceholderMap::iterator phit = FindPlaceholder(map_offset);
pxAssertMsg(phit != m_placeholder_ranges.end(), "Page we're mapping is a placeholder");
pxAssertMsg(map_offset >= phit->first && map_offset < phit->second, "Page is in returned placeholder range");
pxAssertMsg((map_offset + map_size) <= phit->second, "Page range is in returned placeholder range");
// do we need to split to the left? (i.e. is there a placeholder before this range)
const size_t old_ph_end = phit->second;
if (map_offset != phit->first)
{
phit->second = map_offset;
// split it (i.e. left..start and start..end are now separated)
if (!VirtualFreeEx(GetCurrentProcess(), OffsetPointer(phit->first),
(map_offset - phit->first), MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER))
{
pxFailRel("Failed to left split placeholder for map");
}
}
else
{
// start of the placeholder is getting used, we'll split it right below if there's anything left over
m_placeholder_ranges.erase(phit);
}
// do we need to split to the right? (i.e. is there a placeholder after this range)
if ((map_offset + map_size) != old_ph_end)
{
// split out end..ph_end
m_placeholder_ranges.emplace(map_offset + map_size, old_ph_end);
if (!VirtualFreeEx(GetCurrentProcess(), OffsetPointer(map_offset), map_size,
MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER))
{
pxFailRel("Failed to right split placeholder for map");
}
}
// actually do the mapping, replacing the placeholder on the range
if (!MapViewOfFile3(static_cast<HANDLE>(file_handle), GetCurrentProcess(),
map_base, file_offset, map_size, MEM_REPLACE_PLACEHOLDER, PAGE_READWRITE, nullptr, 0))
{
Console.Error("(SharedMemoryMappingArea) MapViewOfFile3() failed: %u", GetLastError());
return nullptr;
}
const DWORD prot = ConvertToWinApi(mode);
if (prot != PAGE_READWRITE)
{
DWORD old_prot;
if (!VirtualProtect(map_base, map_size, prot, &old_prot))
pxFail("Failed to protect memory mapping");
}
m_num_mappings++;
return static_cast<u8*>(map_base);
}
bool SharedMemoryMappingArea::Unmap(void* map_base, size_t map_size)
{
pxAssert(static_cast<u8*>(map_base) >= m_base_ptr && static_cast<u8*>(map_base) < (m_base_ptr + m_size));
const size_t map_offset = static_cast<u8*>(map_base) - m_base_ptr;
pxAssert(Common::IsAlignedPow2(map_offset, __pagesize));
pxAssert(Common::IsAlignedPow2(map_size, __pagesize));
// unmap the specified range
if (!UnmapViewOfFile2(GetCurrentProcess(), map_base, MEM_PRESERVE_PLACEHOLDER))
{
Console.Error("(SharedMemoryMappingArea) UnmapViewOfFile2() failed: %u", GetLastError());
return false;
}
// can we coalesce to the left?
PlaceholderMap::iterator left_it = (map_offset > 0) ? FindPlaceholder(map_offset - 1) : m_placeholder_ranges.end();
if (left_it != m_placeholder_ranges.end())
{
// the left placeholder should end at our start
pxAssert(map_offset == left_it->second);
left_it->second = map_offset + map_size;
// combine placeholders before and the range we're unmapping, i.e. to the left
if (!VirtualFreeEx(GetCurrentProcess(), OffsetPointer(left_it->first),
left_it->second - left_it->first, MEM_RELEASE | MEM_COALESCE_PLACEHOLDERS))
{
pxFail("Failed to coalesce placeholders left for unmap");
}
}
else
{
// this is a new placeholder
left_it = m_placeholder_ranges.emplace(map_offset, map_offset + map_size).first;
}
// can we coalesce to the right?
PlaceholderMap::iterator right_it = ((map_offset + map_size) < m_size) ? FindPlaceholder(map_offset + map_size) : m_placeholder_ranges.end();
if (right_it != m_placeholder_ranges.end())
{
// should start at our end
pxAssert(right_it->first == (map_offset + map_size));
left_it->second = right_it->second;
m_placeholder_ranges.erase(right_it);
// combine our placeholder and the next, i.e. to the right
if (!VirtualFreeEx(GetCurrentProcess(), OffsetPointer(left_it->first),
left_it->second - left_it->first, MEM_RELEASE | MEM_COALESCE_PLACEHOLDERS))
{
pxFail("Failed to coalescae placeholders right for unmap");
}
}
m_num_mappings--;
return true;
}
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#endif