AuroraRuntime/Source/Debug/ExceptionWatcher.Win32.cpp

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2021-06-27 21:25:29 +00:00
/***
Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
File: ExceptionWatcher.Win32.cpp
Date: 2021-6-12
Author: Reece
***/
#include <RuntimeInternal.hpp>
#include "Debug.hpp"
#include "ExceptionWatcher.Win32.hpp"
#include <Process/ProcessMap.Win32.hpp>
#include <Telemetry/Telemetry.hpp>
#include <Windows.h>
#include <Dbghelp.h>
#include <codecvt>
#pragma comment(lib,"Dbghelp.lib")
#include <ehdata.h>
static thread_local int gDebugLocked = 0;
namespace Aurora::Debug
{
static void ParseStack(CONTEXT *ctx, StackTrace &backTrace)
{
char buffer[sizeof(SYMBOL_INFO) + (MAX_SYM_NAME + 1) * sizeof(char)] = { 0 };
AuString backTraceBuffer;
HMODULE hModule;
DWORD disp;
DWORD64 displacement = 0;
HANDLE process = GetCurrentProcess();
STACKFRAME64 stack = { 0 };
CONTEXT cpy = *ctx;
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
#if defined(AURORA_ARCH_X64)
stack.AddrPC.Offset = ctx->Rip;
stack.AddrPC.Mode = AddrModeFlat;
stack.AddrStack.Offset = ctx->Rsp;
stack.AddrStack.Mode = AddrModeFlat;
stack.AddrFrame.Offset = ctx->Rbp;
stack.AddrFrame.Mode = AddrModeFlat;
#elif defined(AURORA_ARCH_XX86)
stack.AddrPC.Offset = ctx->Eip;
stack.AddrPC.Mode = AddrModeFlat;
stack.AddrStack.Offset = ctx->Esp;
stack.AddrStack.Mode = AddrModeFlat;
stack.AddrFrame.Offset = ctx->Ebp;
stack.AddrFrame.Mode = AddrModeFlat;
#endif
for (ULONG frame = 0; ; frame++)
{
StackTraceEntry frameCurrent;
auto result = StackWalk64
(
#if defined(AURORA_ARCH_X64)
IMAGE_FILE_MACHINE_AMD64,
#else
IMAGE_FILE_MACHINE_I386,
#endif
INVALID_HANDLE_VALUE,
INVALID_HANDLE_VALUE,
&stack,
&cpy,
NULL,
SymFunctionTableAccess64,
SymGetModuleBase64,
NULL
);
if (!result)
{
break;
}
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
frameCurrent.address = stack.AddrPC.Offset;
if (GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, (LPCTSTR)(stack.AddrPC.Offset), &hModule))
{
if (hModule != NULL)
{
frameCurrent.module = Process::ModuleToPath(hModule);
}
}
if (SymFromAddr(process, (ULONG64)stack.AddrPC.Offset, &displacement, pSymbol))
{
frameCurrent.label = pSymbol->Name;
}
#if defined(DEBUG)
IMAGEHLP_LINE64 line;
line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
if (SymGetLineFromAddr64(process, stack.AddrPC.Offset, &disp, &line))
{
frameCurrent.file = std::make_tuple(line.FileName, line.LineNumber, 0);
}
#endif
backTrace.push_back(frameCurrent);
}
}
#define EXCEPTION_ENTRY(n) {n, #n}
static const AuHashMap<DWORD, AuString> kExceptionTable
{
EXCEPTION_ENTRY(STILL_ACTIVE),
EXCEPTION_ENTRY(EXCEPTION_ACCESS_VIOLATION),
EXCEPTION_ENTRY(EXCEPTION_DATATYPE_MISALIGNMENT),
EXCEPTION_ENTRY(EXCEPTION_BREAKPOINT),
EXCEPTION_ENTRY(EXCEPTION_SINGLE_STEP),
EXCEPTION_ENTRY(EXCEPTION_ARRAY_BOUNDS_EXCEEDED),
EXCEPTION_ENTRY(EXCEPTION_FLT_DENORMAL_OPERAND),
EXCEPTION_ENTRY(EXCEPTION_FLT_DIVIDE_BY_ZERO),
EXCEPTION_ENTRY(EXCEPTION_FLT_INEXACT_RESULT),
EXCEPTION_ENTRY(EXCEPTION_FLT_INVALID_OPERATION),
EXCEPTION_ENTRY(EXCEPTION_FLT_OVERFLOW),
EXCEPTION_ENTRY(EXCEPTION_FLT_STACK_CHECK),
EXCEPTION_ENTRY(EXCEPTION_FLT_UNDERFLOW),
EXCEPTION_ENTRY(EXCEPTION_INT_DIVIDE_BY_ZERO),
EXCEPTION_ENTRY(EXCEPTION_INT_OVERFLOW),
EXCEPTION_ENTRY(EXCEPTION_PRIV_INSTRUCTION),
EXCEPTION_ENTRY(EXCEPTION_IN_PAGE_ERROR),
EXCEPTION_ENTRY(EXCEPTION_ILLEGAL_INSTRUCTION),
EXCEPTION_ENTRY(EXCEPTION_NONCONTINUABLE_EXCEPTION),
EXCEPTION_ENTRY(EXCEPTION_STACK_OVERFLOW),
EXCEPTION_ENTRY(EXCEPTION_INVALID_DISPOSITION),
EXCEPTION_ENTRY(EXCEPTION_GUARD_PAGE),
EXCEPTION_ENTRY(EXCEPTION_INVALID_HANDLE),
//EXCEPTION_ENTRY(EXCEPTION_POSSIBLE_DEADLOCK),
EXCEPTION_ENTRY(CONTROL_C_EXIT)
};
#undef EXCEPTION_ENTRY
#define EXCEPTION_ENTRY(n) {n, true}
static const AuHashMap<DWORD, bool> kExceptionFatalTable
{
EXCEPTION_ENTRY(EXCEPTION_ACCESS_VIOLATION),
EXCEPTION_ENTRY(EXCEPTION_DATATYPE_MISALIGNMENT),
EXCEPTION_ENTRY(EXCEPTION_ARRAY_BOUNDS_EXCEEDED),
EXCEPTION_ENTRY(EXCEPTION_FLT_DENORMAL_OPERAND),
EXCEPTION_ENTRY(EXCEPTION_FLT_DIVIDE_BY_ZERO),
EXCEPTION_ENTRY(EXCEPTION_FLT_INEXACT_RESULT),
EXCEPTION_ENTRY(EXCEPTION_FLT_INVALID_OPERATION),
EXCEPTION_ENTRY(EXCEPTION_FLT_OVERFLOW),
EXCEPTION_ENTRY(EXCEPTION_FLT_STACK_CHECK),
EXCEPTION_ENTRY(EXCEPTION_FLT_UNDERFLOW),
EXCEPTION_ENTRY(EXCEPTION_INT_DIVIDE_BY_ZERO),
EXCEPTION_ENTRY(EXCEPTION_INT_OVERFLOW),
EXCEPTION_ENTRY(EXCEPTION_PRIV_INSTRUCTION),
EXCEPTION_ENTRY(EXCEPTION_IN_PAGE_ERROR),
EXCEPTION_ENTRY(EXCEPTION_ILLEGAL_INSTRUCTION),
EXCEPTION_ENTRY(EXCEPTION_NONCONTINUABLE_EXCEPTION),
EXCEPTION_ENTRY(EXCEPTION_STACK_OVERFLOW),
EXCEPTION_ENTRY(EXCEPTION_INVALID_DISPOSITION),
EXCEPTION_ENTRY(EXCEPTION_GUARD_PAGE)
};
#undef EXCEPTION_ENTRY
static bool IsReadable(const void *address)
{
MEMORY_BASIC_INFORMATION info;
if (!VirtualQuery(address, &info, sizeof(info)))
{
return false;
}
if (!info.BaseAddress)
{
return false;
}
return (info.Protect & (PAGE_READONLY | PAGE_READWRITE)) != 0;
}
void InitWin32()
{
#if defined(DEBUG) || defined(INTERNAL)
SymInitialize(GetCurrentProcess(), NULL, TRUE);
#endif
AddVectoredExceptionHandler(1,
[](_EXCEPTION_POINTERS *ExceptionInfo) -> LONG
{
Telemetry::NewBlockboxEntry entry;
entry.type = Telemetry::ENewBlackBoxEntry::eWinCxxException;
std::exception *exception = nullptr;
if (ExceptionInfo->ExceptionRecord->ExceptionCode < STATUS_GUARD_PAGE_VIOLATION)
{
return EXCEPTION_CONTINUE_SEARCH;
}
if (ExceptionInfo->ExceptionRecord->ExceptionCode == EXCEPTION_BREAKPOINT)
{
return EXCEPTION_CONTINUE_SEARCH;
}
auto minimal = gDebugLocked++;
if (minimal >= 3)
{
SysPanic("Nested Exception");
}
bool cxxThrow = ExceptionInfo->ExceptionRecord->ExceptionInformation[0] == EH_PURE_MAGIC_NUMBER1;
bool cxxThrowPure = ExceptionInfo->ExceptionRecord->ExceptionInformation[0] == EH_MAGIC_NUMBER1;
if ((ExceptionInfo->ExceptionRecord->ExceptionCode == EH_EXCEPTION_NUMBER) &&
(ExceptionInfo->ExceptionRecord->NumberParameters >= 4) &&
(cxxThrow) ||
(cxxThrowPure)
)
{
HMODULE handle {};
auto *throwInfo = reinterpret_cast<ThrowInfo *>(ExceptionInfo->ExceptionRecord->ExceptionInformation[2]);
if (throwInfo)
{
auto attribs = throwInfo->attributes;
if (_EH_RELATIVE_TYPEINFO)
{
handle = reinterpret_cast<HMODULE>(ExceptionInfo->ExceptionRecord->ExceptionInformation[3]);
}
#if defined(_EH_RELATIVE_TYPEINFO)
const auto catchableTypeArray = reinterpret_cast<const CatchableTypeArray*>(static_cast<AuUInt>(throwInfo->pCatchableTypeArray) + reinterpret_cast<AuUInt>(handle));
const auto type = reinterpret_cast<CatchableType*>(static_cast<AuUInt>(catchableTypeArray->arrayOfCatchableTypes[0]) + reinterpret_cast<AuUInt>(handle));
const auto descriptor = reinterpret_cast<TypeDescriptor*>(static_cast<AuUInt>(type->pType) + reinterpret_cast<AuUInt>(handle));
#else
const auto catchableTypeArray = reinterpret_cast<const CatchableTypeArray*>(static_cast<AuUInt>(throwInfo->pCatchableTypeArray));
const auto type = reinterpret_cast<CatchableType*>(static_cast<AuUInt>(catchableTypeArray->arrayOfCatchableTypes[0]));
const auto descriptor = reinterpret_cast<TypeDescriptor*>(static_cast<AuUInt>(type->pType));
#endif
if (strncmp(descriptor->name, ".?AVException@", ArraySize(".?AVException@") - 1) == 0)
{
exception = reinterpret_cast<std::exception *>(ExceptionInfo->ExceptionRecord->ExceptionInformation[1]);
if (IsReadable(exception))
{
entry.wincxx.str = exception->what();
}
}
else if (((type->properties & CT_IsSimpleType) != 0) &&
((type->properties & CT_IsWinRTHandle) == 0))
{
// assert descriptor->name == ".PEAD"? `DEAP.`?
auto possibleStringPointer = reinterpret_cast<const char **>(ExceptionInfo->ExceptionRecord->ExceptionInformation[1]);
if (IsReadable(possibleStringPointer))
{
auto string = *possibleStringPointer;
if (IsReadable(string))
{
entry.wincxx.str = string;
}
}
}
}
}
bool isCritical = TryFind(kExceptionFatalTable, ExceptionInfo->ExceptionRecord->ExceptionCode);
if (entry.wincxx.str.empty())
{
const AuString *msg;
if (TryFind(kExceptionTable, ExceptionInfo->ExceptionRecord->ExceptionCode, msg))
{
entry.wincxx.str = *msg;
}
else
{
entry.wincxx.str = std::to_string(ExceptionInfo->ExceptionRecord->ExceptionCode);
}
}
try
{
if (minimal < 3)
{
ParseStack(ExceptionInfo->ContextRecord, entry.wincxx.stack.backtrace);
}
}
catch (...)
{
}
#if defined(INTERNAL) || defined(DEBUG)
bool isInternal = true;
#else
bool isInternal = false;
#endif
if ((isCritical || isInternal) && (minimal == 0))
{
LogWarn("NT Exception: 0x{:x}, {}", ExceptionInfo->ExceptionRecord->ExceptionCode, entry.wincxx.str);
LogWarn("{}", StringifyStackTrace(entry.wincxx.stack.backtrace));
}
try
{
Telemetry::Report(entry);
if (isCritical)
{
Telemetry::Mayday();
}
}
catch (...)
{
}
gDebugLocked = 0;
return EXCEPTION_CONTINUE_SEARCH;
});
}
}