forked from OSchip/llvm-project
872 lines
30 KiB
C++
872 lines
30 KiB
C++
//===- Win32/Signals.cpp - Win32 Signals Implementation ---------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file provides the Win32 specific implementation of the Signals class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#include "llvm/Support/ConvertUTF.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/Path.h"
|
|
#include "llvm/Support/Process.h"
|
|
#include "llvm/Support/WindowsError.h"
|
|
#include <algorithm>
|
|
#include <io.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
|
|
#include "llvm/Support/Format.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
// The Windows.h header must be after LLVM and standard headers.
|
|
#include "WindowsSupport.h"
|
|
|
|
#ifdef __MINGW32__
|
|
#include <imagehlp.h>
|
|
#else
|
|
#include <crtdbg.h>
|
|
#include <dbghelp.h>
|
|
#endif
|
|
#include <psapi.h>
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma comment(lib, "psapi.lib")
|
|
#elif __MINGW32__
|
|
// The version of g++ that comes with MinGW does *not* properly understand
|
|
// the ll format specifier for printf. However, MinGW passes the format
|
|
// specifiers on to the MSVCRT entirely, and the CRT understands the ll
|
|
// specifier. So these warnings are spurious in this case. Since we compile
|
|
// with -Wall, this will generate these warnings which should be ignored. So
|
|
// we will turn off the warnings for this just file. However, MinGW also does
|
|
// not support push and pop for diagnostics, so we have to manually turn it
|
|
// back on at the end of the file.
|
|
#pragma GCC diagnostic ignored "-Wformat"
|
|
#pragma GCC diagnostic ignored "-Wformat-extra-args"
|
|
|
|
#if !defined(__MINGW64_VERSION_MAJOR)
|
|
// MinGW.org does not have updated support for the 64-bit versions of the
|
|
// DebugHlp APIs. So we will have to load them manually. The structures and
|
|
// method signatures were pulled from DbgHelp.h in the Windows Platform SDK,
|
|
// and adjusted for brevity.
|
|
typedef struct _IMAGEHLP_LINE64 {
|
|
DWORD SizeOfStruct;
|
|
PVOID Key;
|
|
DWORD LineNumber;
|
|
PCHAR FileName;
|
|
DWORD64 Address;
|
|
} IMAGEHLP_LINE64, *PIMAGEHLP_LINE64;
|
|
|
|
typedef struct _IMAGEHLP_SYMBOL64 {
|
|
DWORD SizeOfStruct;
|
|
DWORD64 Address;
|
|
DWORD Size;
|
|
DWORD Flags;
|
|
DWORD MaxNameLength;
|
|
CHAR Name[1];
|
|
} IMAGEHLP_SYMBOL64, *PIMAGEHLP_SYMBOL64;
|
|
|
|
typedef struct _tagADDRESS64 {
|
|
DWORD64 Offset;
|
|
WORD Segment;
|
|
ADDRESS_MODE Mode;
|
|
} ADDRESS64, *LPADDRESS64;
|
|
|
|
typedef struct _KDHELP64 {
|
|
DWORD64 Thread;
|
|
DWORD ThCallbackStack;
|
|
DWORD ThCallbackBStore;
|
|
DWORD NextCallback;
|
|
DWORD FramePointer;
|
|
DWORD64 KiCallUserMode;
|
|
DWORD64 KeUserCallbackDispatcher;
|
|
DWORD64 SystemRangeStart;
|
|
DWORD64 KiUserExceptionDispatcher;
|
|
DWORD64 StackBase;
|
|
DWORD64 StackLimit;
|
|
DWORD64 Reserved[5];
|
|
} KDHELP64, *PKDHELP64;
|
|
|
|
typedef struct _tagSTACKFRAME64 {
|
|
ADDRESS64 AddrPC;
|
|
ADDRESS64 AddrReturn;
|
|
ADDRESS64 AddrFrame;
|
|
ADDRESS64 AddrStack;
|
|
ADDRESS64 AddrBStore;
|
|
PVOID FuncTableEntry;
|
|
DWORD64 Params[4];
|
|
BOOL Far;
|
|
BOOL Virtual;
|
|
DWORD64 Reserved[3];
|
|
KDHELP64 KdHelp;
|
|
} STACKFRAME64, *LPSTACKFRAME64;
|
|
#endif // !defined(__MINGW64_VERSION_MAJOR)
|
|
#endif // __MINGW32__
|
|
|
|
typedef BOOL (__stdcall *PREAD_PROCESS_MEMORY_ROUTINE64)(HANDLE hProcess,
|
|
DWORD64 qwBaseAddress, PVOID lpBuffer, DWORD nSize,
|
|
LPDWORD lpNumberOfBytesRead);
|
|
|
|
typedef PVOID (__stdcall *PFUNCTION_TABLE_ACCESS_ROUTINE64)( HANDLE ahProcess,
|
|
DWORD64 AddrBase);
|
|
|
|
typedef DWORD64 (__stdcall *PGET_MODULE_BASE_ROUTINE64)(HANDLE hProcess,
|
|
DWORD64 Address);
|
|
|
|
typedef DWORD64 (__stdcall *PTRANSLATE_ADDRESS_ROUTINE64)(HANDLE hProcess,
|
|
HANDLE hThread, LPADDRESS64 lpaddr);
|
|
|
|
typedef BOOL(WINAPI *fpMiniDumpWriteDump)(HANDLE, DWORD, HANDLE, MINIDUMP_TYPE,
|
|
PMINIDUMP_EXCEPTION_INFORMATION,
|
|
PMINIDUMP_USER_STREAM_INFORMATION,
|
|
PMINIDUMP_CALLBACK_INFORMATION);
|
|
static fpMiniDumpWriteDump fMiniDumpWriteDump;
|
|
|
|
typedef BOOL (WINAPI *fpStackWalk64)(DWORD, HANDLE, HANDLE, LPSTACKFRAME64,
|
|
PVOID, PREAD_PROCESS_MEMORY_ROUTINE64,
|
|
PFUNCTION_TABLE_ACCESS_ROUTINE64,
|
|
PGET_MODULE_BASE_ROUTINE64,
|
|
PTRANSLATE_ADDRESS_ROUTINE64);
|
|
static fpStackWalk64 fStackWalk64;
|
|
|
|
typedef DWORD64 (WINAPI *fpSymGetModuleBase64)(HANDLE, DWORD64);
|
|
static fpSymGetModuleBase64 fSymGetModuleBase64;
|
|
|
|
typedef BOOL (WINAPI *fpSymGetSymFromAddr64)(HANDLE, DWORD64,
|
|
PDWORD64, PIMAGEHLP_SYMBOL64);
|
|
static fpSymGetSymFromAddr64 fSymGetSymFromAddr64;
|
|
|
|
typedef BOOL (WINAPI *fpSymGetLineFromAddr64)(HANDLE, DWORD64,
|
|
PDWORD, PIMAGEHLP_LINE64);
|
|
static fpSymGetLineFromAddr64 fSymGetLineFromAddr64;
|
|
|
|
typedef BOOL(WINAPI *fpSymGetModuleInfo64)(HANDLE hProcess, DWORD64 dwAddr,
|
|
PIMAGEHLP_MODULE64 ModuleInfo);
|
|
static fpSymGetModuleInfo64 fSymGetModuleInfo64;
|
|
|
|
typedef PVOID (WINAPI *fpSymFunctionTableAccess64)(HANDLE, DWORD64);
|
|
static fpSymFunctionTableAccess64 fSymFunctionTableAccess64;
|
|
|
|
typedef DWORD (WINAPI *fpSymSetOptions)(DWORD);
|
|
static fpSymSetOptions fSymSetOptions;
|
|
|
|
typedef BOOL (WINAPI *fpSymInitialize)(HANDLE, PCSTR, BOOL);
|
|
static fpSymInitialize fSymInitialize;
|
|
|
|
typedef BOOL (WINAPI *fpEnumerateLoadedModules)(HANDLE,PENUMLOADED_MODULES_CALLBACK64,PVOID);
|
|
static fpEnumerateLoadedModules fEnumerateLoadedModules;
|
|
|
|
static bool load64BitDebugHelp(void) {
|
|
HMODULE hLib = ::LoadLibraryW(L"Dbghelp.dll");
|
|
if (hLib) {
|
|
fMiniDumpWriteDump = (fpMiniDumpWriteDump)
|
|
::GetProcAddress(hLib, "MiniDumpWriteDump");
|
|
fStackWalk64 = (fpStackWalk64)
|
|
::GetProcAddress(hLib, "StackWalk64");
|
|
fSymGetModuleBase64 = (fpSymGetModuleBase64)
|
|
::GetProcAddress(hLib, "SymGetModuleBase64");
|
|
fSymGetSymFromAddr64 = (fpSymGetSymFromAddr64)
|
|
::GetProcAddress(hLib, "SymGetSymFromAddr64");
|
|
fSymGetLineFromAddr64 = (fpSymGetLineFromAddr64)
|
|
::GetProcAddress(hLib, "SymGetLineFromAddr64");
|
|
fSymGetModuleInfo64 = (fpSymGetModuleInfo64)
|
|
::GetProcAddress(hLib, "SymGetModuleInfo64");
|
|
fSymFunctionTableAccess64 = (fpSymFunctionTableAccess64)
|
|
::GetProcAddress(hLib, "SymFunctionTableAccess64");
|
|
fSymSetOptions = (fpSymSetOptions)::GetProcAddress(hLib, "SymSetOptions");
|
|
fSymInitialize = (fpSymInitialize)::GetProcAddress(hLib, "SymInitialize");
|
|
fEnumerateLoadedModules = (fpEnumerateLoadedModules)
|
|
::GetProcAddress(hLib, "EnumerateLoadedModules64");
|
|
}
|
|
return fStackWalk64 && fSymInitialize && fSymSetOptions && fMiniDumpWriteDump;
|
|
}
|
|
|
|
using namespace llvm;
|
|
|
|
// Forward declare.
|
|
static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep);
|
|
static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType);
|
|
|
|
// The function to call if ctrl-c is pressed.
|
|
static void (*InterruptFunction)() = 0;
|
|
|
|
static std::vector<std::string> *FilesToRemove = NULL;
|
|
static bool RegisteredUnhandledExceptionFilter = false;
|
|
static bool CleanupExecuted = false;
|
|
static PTOP_LEVEL_EXCEPTION_FILTER OldFilter = NULL;
|
|
|
|
// Windows creates a new thread to execute the console handler when an event
|
|
// (such as CTRL/C) occurs. This causes concurrency issues with the above
|
|
// globals which this critical section addresses.
|
|
static CRITICAL_SECTION CriticalSection;
|
|
static bool CriticalSectionInitialized = false;
|
|
|
|
static StringRef Argv0;
|
|
|
|
enum {
|
|
#if defined(_M_X64)
|
|
NativeMachineType = IMAGE_FILE_MACHINE_AMD64
|
|
#elif defined(_M_ARM64)
|
|
NativeMachineType = IMAGE_FILE_MACHINE_ARM64
|
|
#elif defined(_M_IX86)
|
|
NativeMachineType = IMAGE_FILE_MACHINE_I386
|
|
#elif defined(_M_ARM)
|
|
NativeMachineType = IMAGE_FILE_MACHINE_ARMNT
|
|
#else
|
|
NativeMachineType = IMAGE_FILE_MACHINE_UNKNOWN
|
|
#endif
|
|
};
|
|
|
|
static bool printStackTraceWithLLVMSymbolizer(llvm::raw_ostream &OS,
|
|
HANDLE hProcess, HANDLE hThread,
|
|
STACKFRAME64 &StackFrameOrig,
|
|
CONTEXT *ContextOrig) {
|
|
// StackWalk64 modifies the incoming stack frame and context, so copy them.
|
|
STACKFRAME64 StackFrame = StackFrameOrig;
|
|
|
|
// Copy the register context so that we don't modify it while we unwind. We
|
|
// could use InitializeContext + CopyContext, but that's only required to get
|
|
// at AVX registers, which typically aren't needed by StackWalk64. Reduce the
|
|
// flag set to indicate that there's less data.
|
|
CONTEXT Context = *ContextOrig;
|
|
Context.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
|
|
|
|
static void *StackTrace[256];
|
|
size_t Depth = 0;
|
|
while (fStackWalk64(NativeMachineType, hProcess, hThread, &StackFrame,
|
|
&Context, 0, fSymFunctionTableAccess64,
|
|
fSymGetModuleBase64, 0)) {
|
|
if (StackFrame.AddrFrame.Offset == 0)
|
|
break;
|
|
StackTrace[Depth++] = (void *)(uintptr_t)StackFrame.AddrPC.Offset;
|
|
if (Depth >= array_lengthof(StackTrace))
|
|
break;
|
|
}
|
|
|
|
return printSymbolizedStackTrace(Argv0, &StackTrace[0], Depth, OS);
|
|
}
|
|
|
|
namespace {
|
|
struct FindModuleData {
|
|
void **StackTrace;
|
|
int Depth;
|
|
const char **Modules;
|
|
intptr_t *Offsets;
|
|
StringSaver *StrPool;
|
|
};
|
|
}
|
|
|
|
static BOOL CALLBACK findModuleCallback(PCSTR ModuleName,
|
|
DWORD64 ModuleBase, ULONG ModuleSize,
|
|
void *VoidData) {
|
|
FindModuleData *Data = (FindModuleData*)VoidData;
|
|
intptr_t Beg = ModuleBase;
|
|
intptr_t End = Beg + ModuleSize;
|
|
for (int I = 0; I < Data->Depth; I++) {
|
|
if (Data->Modules[I])
|
|
continue;
|
|
intptr_t Addr = (intptr_t)Data->StackTrace[I];
|
|
if (Beg <= Addr && Addr < End) {
|
|
Data->Modules[I] = Data->StrPool->save(ModuleName).data();
|
|
Data->Offsets[I] = Addr - Beg;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static bool findModulesAndOffsets(void **StackTrace, int Depth,
|
|
const char **Modules, intptr_t *Offsets,
|
|
const char *MainExecutableName,
|
|
StringSaver &StrPool) {
|
|
if (!fEnumerateLoadedModules)
|
|
return false;
|
|
FindModuleData Data;
|
|
Data.StackTrace = StackTrace;
|
|
Data.Depth = Depth;
|
|
Data.Modules = Modules;
|
|
Data.Offsets = Offsets;
|
|
Data.StrPool = &StrPool;
|
|
fEnumerateLoadedModules(GetCurrentProcess(), findModuleCallback, &Data);
|
|
return true;
|
|
}
|
|
|
|
static void PrintStackTraceForThread(llvm::raw_ostream &OS, HANDLE hProcess,
|
|
HANDLE hThread, STACKFRAME64 &StackFrame,
|
|
CONTEXT *Context) {
|
|
// Initialize the symbol handler.
|
|
fSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_LOAD_LINES);
|
|
fSymInitialize(hProcess, NULL, TRUE);
|
|
|
|
// Try llvm-symbolizer first. llvm-symbolizer knows how to deal with both PDBs
|
|
// and DWARF, so it should do a good job regardless of what debug info or
|
|
// linker is in use.
|
|
if (printStackTraceWithLLVMSymbolizer(OS, hProcess, hThread, StackFrame,
|
|
Context)) {
|
|
return;
|
|
}
|
|
|
|
while (true) {
|
|
if (!fStackWalk64(NativeMachineType, hProcess, hThread, &StackFrame,
|
|
Context, 0, fSymFunctionTableAccess64,
|
|
fSymGetModuleBase64, 0)) {
|
|
break;
|
|
}
|
|
|
|
if (StackFrame.AddrFrame.Offset == 0)
|
|
break;
|
|
|
|
using namespace llvm;
|
|
// Print the PC in hexadecimal.
|
|
DWORD64 PC = StackFrame.AddrPC.Offset;
|
|
#if defined(_M_X64) || defined(_M_ARM64)
|
|
OS << format("0x%016llX", PC);
|
|
#elif defined(_M_IX86) || defined(_M_ARM)
|
|
OS << format("0x%08lX", static_cast<DWORD>(PC));
|
|
#endif
|
|
|
|
// Print the parameters. Assume there are four.
|
|
#if defined(_M_X64) || defined(_M_ARM64)
|
|
OS << format(" (0x%016llX 0x%016llX 0x%016llX 0x%016llX)",
|
|
StackFrame.Params[0], StackFrame.Params[1], StackFrame.Params[2],
|
|
StackFrame.Params[3]);
|
|
#elif defined(_M_IX86) || defined(_M_ARM)
|
|
OS << format(" (0x%08lX 0x%08lX 0x%08lX 0x%08lX)",
|
|
static_cast<DWORD>(StackFrame.Params[0]),
|
|
static_cast<DWORD>(StackFrame.Params[1]),
|
|
static_cast<DWORD>(StackFrame.Params[2]),
|
|
static_cast<DWORD>(StackFrame.Params[3]));
|
|
#endif
|
|
// Verify the PC belongs to a module in this process.
|
|
if (!fSymGetModuleBase64(hProcess, PC)) {
|
|
OS << " <unknown module>\n";
|
|
continue;
|
|
}
|
|
|
|
// Print the symbol name.
|
|
char buffer[512];
|
|
IMAGEHLP_SYMBOL64 *symbol = reinterpret_cast<IMAGEHLP_SYMBOL64 *>(buffer);
|
|
memset(symbol, 0, sizeof(IMAGEHLP_SYMBOL64));
|
|
symbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
|
|
symbol->MaxNameLength = 512 - sizeof(IMAGEHLP_SYMBOL64);
|
|
|
|
DWORD64 dwDisp;
|
|
if (!fSymGetSymFromAddr64(hProcess, PC, &dwDisp, symbol)) {
|
|
OS << '\n';
|
|
continue;
|
|
}
|
|
|
|
buffer[511] = 0;
|
|
if (dwDisp > 0)
|
|
OS << format(", %s() + 0x%llX bytes(s)", (const char*)symbol->Name,
|
|
dwDisp);
|
|
else
|
|
OS << format(", %s", (const char*)symbol->Name);
|
|
|
|
// Print the source file and line number information.
|
|
IMAGEHLP_LINE64 line = {};
|
|
DWORD dwLineDisp;
|
|
line.SizeOfStruct = sizeof(line);
|
|
if (fSymGetLineFromAddr64(hProcess, PC, &dwLineDisp, &line)) {
|
|
OS << format(", %s, line %lu", line.FileName, line.LineNumber);
|
|
if (dwLineDisp > 0)
|
|
OS << format(" + 0x%lX byte(s)", dwLineDisp);
|
|
}
|
|
|
|
OS << '\n';
|
|
}
|
|
}
|
|
|
|
namespace llvm {
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
//=== WARNING: Implementation here must contain only Win32 specific code
|
|
//=== and must not be UNIX code
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifdef _MSC_VER
|
|
/// Emulates hitting "retry" from an "abort, retry, ignore" CRT debug report
|
|
/// dialog. "retry" raises an exception which ultimately triggers our stack
|
|
/// dumper.
|
|
static LLVM_ATTRIBUTE_UNUSED int
|
|
AvoidMessageBoxHook(int ReportType, char *Message, int *Return) {
|
|
// Set *Return to the retry code for the return value of _CrtDbgReport:
|
|
// http://msdn.microsoft.com/en-us/library/8hyw4sy7(v=vs.71).aspx
|
|
// This may also trigger just-in-time debugging via DebugBreak().
|
|
if (Return)
|
|
*Return = 1;
|
|
// Don't call _CrtDbgReport.
|
|
return TRUE;
|
|
}
|
|
|
|
#endif
|
|
|
|
extern "C" void HandleAbort(int Sig) {
|
|
if (Sig == SIGABRT) {
|
|
LLVM_BUILTIN_TRAP;
|
|
}
|
|
}
|
|
|
|
static void InitializeThreading() {
|
|
if (CriticalSectionInitialized)
|
|
return;
|
|
|
|
// Now's the time to create the critical section. This is the first time
|
|
// through here, and there's only one thread.
|
|
InitializeCriticalSection(&CriticalSection);
|
|
CriticalSectionInitialized = true;
|
|
}
|
|
|
|
static void RegisterHandler() {
|
|
// If we cannot load up the APIs (which would be unexpected as they should
|
|
// exist on every version of Windows we support), we will bail out since
|
|
// there would be nothing to report.
|
|
if (!load64BitDebugHelp()) {
|
|
assert(false && "These APIs should always be available");
|
|
return;
|
|
}
|
|
|
|
if (RegisteredUnhandledExceptionFilter) {
|
|
EnterCriticalSection(&CriticalSection);
|
|
return;
|
|
}
|
|
|
|
InitializeThreading();
|
|
|
|
// Enter it immediately. Now if someone hits CTRL/C, the console handler
|
|
// can't proceed until the globals are updated.
|
|
EnterCriticalSection(&CriticalSection);
|
|
|
|
RegisteredUnhandledExceptionFilter = true;
|
|
OldFilter = SetUnhandledExceptionFilter(LLVMUnhandledExceptionFilter);
|
|
SetConsoleCtrlHandler(LLVMConsoleCtrlHandler, TRUE);
|
|
|
|
// IMPORTANT NOTE: Caller must call LeaveCriticalSection(&CriticalSection) or
|
|
// else multi-threading problems will ensue.
|
|
}
|
|
|
|
// The public API
|
|
bool sys::RemoveFileOnSignal(StringRef Filename, std::string* ErrMsg) {
|
|
RegisterHandler();
|
|
|
|
if (CleanupExecuted) {
|
|
if (ErrMsg)
|
|
*ErrMsg = "Process terminating -- cannot register for removal";
|
|
return true;
|
|
}
|
|
|
|
if (FilesToRemove == NULL)
|
|
FilesToRemove = new std::vector<std::string>;
|
|
|
|
FilesToRemove->push_back(Filename);
|
|
|
|
LeaveCriticalSection(&CriticalSection);
|
|
return false;
|
|
}
|
|
|
|
// The public API
|
|
void sys::DontRemoveFileOnSignal(StringRef Filename) {
|
|
if (FilesToRemove == NULL)
|
|
return;
|
|
|
|
RegisterHandler();
|
|
|
|
std::vector<std::string>::reverse_iterator I =
|
|
find(reverse(*FilesToRemove), Filename);
|
|
if (I != FilesToRemove->rend())
|
|
FilesToRemove->erase(I.base()-1);
|
|
|
|
LeaveCriticalSection(&CriticalSection);
|
|
}
|
|
|
|
void sys::DisableSystemDialogsOnCrash() {
|
|
// Crash to stack trace handler on abort.
|
|
signal(SIGABRT, HandleAbort);
|
|
|
|
// The following functions are not reliably accessible on MinGW.
|
|
#ifdef _MSC_VER
|
|
// We're already handling writing a "something went wrong" message.
|
|
_set_abort_behavior(0, _WRITE_ABORT_MSG);
|
|
// Disable Dr. Watson.
|
|
_set_abort_behavior(0, _CALL_REPORTFAULT);
|
|
_CrtSetReportHook(AvoidMessageBoxHook);
|
|
#endif
|
|
|
|
// Disable standard error dialog box.
|
|
SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX |
|
|
SEM_NOOPENFILEERRORBOX);
|
|
_set_error_mode(_OUT_TO_STDERR);
|
|
}
|
|
|
|
/// When an error signal (such as SIGABRT or SIGSEGV) is delivered to the
|
|
/// process, print a stack trace and then exit.
|
|
void sys::PrintStackTraceOnErrorSignal(StringRef Argv0,
|
|
bool DisableCrashReporting) {
|
|
::Argv0 = Argv0;
|
|
|
|
if (DisableCrashReporting || getenv("LLVM_DISABLE_CRASH_REPORT"))
|
|
Process::PreventCoreFiles();
|
|
|
|
DisableSystemDialogsOnCrash();
|
|
RegisterHandler();
|
|
LeaveCriticalSection(&CriticalSection);
|
|
}
|
|
}
|
|
|
|
#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
|
|
// Provide a prototype for RtlCaptureContext, mingw32 from mingw.org is
|
|
// missing it but mingw-w64 has it.
|
|
extern "C" VOID WINAPI RtlCaptureContext(PCONTEXT ContextRecord);
|
|
#endif
|
|
|
|
void llvm::sys::PrintStackTrace(raw_ostream &OS) {
|
|
STACKFRAME64 StackFrame = {};
|
|
CONTEXT Context = {};
|
|
::RtlCaptureContext(&Context);
|
|
#if defined(_M_X64)
|
|
StackFrame.AddrPC.Offset = Context.Rip;
|
|
StackFrame.AddrStack.Offset = Context.Rsp;
|
|
StackFrame.AddrFrame.Offset = Context.Rbp;
|
|
#elif defined(_M_IX86)
|
|
StackFrame.AddrPC.Offset = Context.Eip;
|
|
StackFrame.AddrStack.Offset = Context.Esp;
|
|
StackFrame.AddrFrame.Offset = Context.Ebp;
|
|
#elif defined(_M_ARM64)
|
|
StackFrame.AddrPC.Offset = Context.Pc;
|
|
StackFrame.AddrStack.Offset = Context.Sp;
|
|
StackFrame.AddrFrame.Offset = Context.Fp;
|
|
#elif defined(_M_ARM)
|
|
StackFrame.AddrPC.Offset = Context.Pc;
|
|
StackFrame.AddrStack.Offset = Context.Sp;
|
|
StackFrame.AddrFrame.Offset = Context.R11;
|
|
#endif
|
|
StackFrame.AddrPC.Mode = AddrModeFlat;
|
|
StackFrame.AddrStack.Mode = AddrModeFlat;
|
|
StackFrame.AddrFrame.Mode = AddrModeFlat;
|
|
PrintStackTraceForThread(OS, GetCurrentProcess(), GetCurrentThread(),
|
|
StackFrame, &Context);
|
|
}
|
|
|
|
|
|
void llvm::sys::SetInterruptFunction(void (*IF)()) {
|
|
RegisterHandler();
|
|
InterruptFunction = IF;
|
|
LeaveCriticalSection(&CriticalSection);
|
|
}
|
|
|
|
|
|
/// Add a function to be called when a signal is delivered to the process. The
|
|
/// handler can have a cookie passed to it to identify what instance of the
|
|
/// handler it is.
|
|
void llvm::sys::AddSignalHandler(sys::SignalHandlerCallback FnPtr,
|
|
void *Cookie) {
|
|
insertSignalHandler(FnPtr, Cookie);
|
|
RegisterHandler();
|
|
LeaveCriticalSection(&CriticalSection);
|
|
}
|
|
|
|
static void Cleanup() {
|
|
if (CleanupExecuted)
|
|
return;
|
|
|
|
EnterCriticalSection(&CriticalSection);
|
|
|
|
// Prevent other thread from registering new files and directories for
|
|
// removal, should we be executing because of the console handler callback.
|
|
CleanupExecuted = true;
|
|
|
|
// FIXME: open files cannot be deleted.
|
|
if (FilesToRemove != NULL)
|
|
while (!FilesToRemove->empty()) {
|
|
llvm::sys::fs::remove(FilesToRemove->back());
|
|
FilesToRemove->pop_back();
|
|
}
|
|
llvm::sys::RunSignalHandlers();
|
|
LeaveCriticalSection(&CriticalSection);
|
|
}
|
|
|
|
void llvm::sys::RunInterruptHandlers() {
|
|
// The interrupt handler may be called from an interrupt, but it may also be
|
|
// called manually (such as the case of report_fatal_error with no registered
|
|
// error handler). We must ensure that the critical section is properly
|
|
// initialized.
|
|
InitializeThreading();
|
|
Cleanup();
|
|
}
|
|
|
|
/// Find the Windows Registry Key for a given location.
|
|
///
|
|
/// \returns a valid HKEY if the location exists, else NULL.
|
|
static HKEY FindWERKey(const llvm::Twine &RegistryLocation) {
|
|
HKEY Key;
|
|
if (ERROR_SUCCESS != ::RegOpenKeyExA(HKEY_LOCAL_MACHINE,
|
|
RegistryLocation.str().c_str(), 0,
|
|
KEY_QUERY_VALUE | KEY_READ, &Key))
|
|
return NULL;
|
|
|
|
return Key;
|
|
}
|
|
|
|
/// Populate ResultDirectory with the value for "DumpFolder" for a given
|
|
/// Windows Registry key.
|
|
///
|
|
/// \returns true if a valid value for DumpFolder exists, false otherwise.
|
|
static bool GetDumpFolder(HKEY Key,
|
|
llvm::SmallVectorImpl<char> &ResultDirectory) {
|
|
using llvm::sys::windows::UTF16ToUTF8;
|
|
|
|
if (!Key)
|
|
return false;
|
|
|
|
DWORD BufferLengthBytes = 0;
|
|
|
|
if (ERROR_SUCCESS != ::RegGetValueW(Key, 0, L"DumpFolder", REG_EXPAND_SZ,
|
|
NULL, NULL, &BufferLengthBytes))
|
|
return false;
|
|
|
|
SmallVector<wchar_t, MAX_PATH> Buffer(BufferLengthBytes);
|
|
|
|
if (ERROR_SUCCESS != ::RegGetValueW(Key, 0, L"DumpFolder", REG_EXPAND_SZ,
|
|
NULL, Buffer.data(), &BufferLengthBytes))
|
|
return false;
|
|
|
|
DWORD ExpandBufferSize = ::ExpandEnvironmentStringsW(Buffer.data(), NULL, 0);
|
|
|
|
if (!ExpandBufferSize)
|
|
return false;
|
|
|
|
SmallVector<wchar_t, MAX_PATH> ExpandBuffer(ExpandBufferSize);
|
|
|
|
if (ExpandBufferSize != ::ExpandEnvironmentStringsW(Buffer.data(),
|
|
ExpandBuffer.data(),
|
|
ExpandBufferSize))
|
|
return false;
|
|
|
|
if (UTF16ToUTF8(ExpandBuffer.data(), ExpandBufferSize - 1, ResultDirectory))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/// Populate ResultType with a valid MINIDUMP_TYPE based on the value of
|
|
/// "DumpType" for a given Windows Registry key.
|
|
///
|
|
/// According to
|
|
/// https://msdn.microsoft.com/en-us/library/windows/desktop/bb787181(v=vs.85).aspx
|
|
/// valid values for DumpType are:
|
|
/// * 0: Custom dump
|
|
/// * 1: Mini dump
|
|
/// * 2: Full dump
|
|
/// If "Custom dump" is specified then the "CustomDumpFlags" field is read
|
|
/// containing a bitwise combination of MINIDUMP_TYPE values.
|
|
///
|
|
/// \returns true if a valid value for ResultType can be set, false otherwise.
|
|
static bool GetDumpType(HKEY Key, MINIDUMP_TYPE &ResultType) {
|
|
if (!Key)
|
|
return false;
|
|
|
|
DWORD DumpType;
|
|
DWORD TypeSize = sizeof(DumpType);
|
|
if (ERROR_SUCCESS != ::RegGetValueW(Key, NULL, L"DumpType", RRF_RT_REG_DWORD,
|
|
NULL, &DumpType,
|
|
&TypeSize))
|
|
return false;
|
|
|
|
switch (DumpType) {
|
|
case 0: {
|
|
DWORD Flags = 0;
|
|
if (ERROR_SUCCESS != ::RegGetValueW(Key, NULL, L"CustomDumpFlags",
|
|
RRF_RT_REG_DWORD, NULL, &Flags,
|
|
&TypeSize))
|
|
return false;
|
|
|
|
ResultType = static_cast<MINIDUMP_TYPE>(Flags);
|
|
break;
|
|
}
|
|
case 1:
|
|
ResultType = MiniDumpNormal;
|
|
break;
|
|
case 2:
|
|
ResultType = MiniDumpWithFullMemory;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/// Write a Windows dump file containing process information that can be
|
|
/// used for post-mortem debugging.
|
|
///
|
|
/// \returns zero error code if a mini dump created, actual error code
|
|
/// otherwise.
|
|
static std::error_code WINAPI
|
|
WriteWindowsDumpFile(PMINIDUMP_EXCEPTION_INFORMATION ExceptionInfo) {
|
|
using namespace llvm;
|
|
using namespace llvm::sys;
|
|
|
|
std::string MainExecutableName = fs::getMainExecutable(nullptr, nullptr);
|
|
StringRef ProgramName;
|
|
|
|
if (MainExecutableName.empty()) {
|
|
// If we can't get the executable filename,
|
|
// things are in worse shape than we realize
|
|
// and we should just bail out.
|
|
return mapWindowsError(::GetLastError());
|
|
}
|
|
|
|
ProgramName = path::filename(MainExecutableName.c_str());
|
|
|
|
// The Windows Registry location as specified at
|
|
// https://msdn.microsoft.com/en-us/library/windows/desktop/bb787181%28v=vs.85%29.aspx
|
|
// "Collecting User-Mode Dumps" that may optionally be set to collect crash
|
|
// dumps in a specified location.
|
|
StringRef LocalDumpsRegistryLocation =
|
|
"SOFTWARE\\Microsoft\\Windows\\Windows Error Reporting\\LocalDumps";
|
|
|
|
// The key pointing to the Registry location that may contain global crash
|
|
// dump settings. This will be NULL if the location can not be found.
|
|
ScopedRegHandle DefaultLocalDumpsKey(FindWERKey(LocalDumpsRegistryLocation));
|
|
|
|
// The key pointing to the Registry location that may contain
|
|
// application-specific crash dump settings. This will be NULL if the
|
|
// location can not be found.
|
|
ScopedRegHandle AppSpecificKey(
|
|
FindWERKey(Twine(LocalDumpsRegistryLocation) + "\\" + ProgramName));
|
|
|
|
// Look to see if a dump type is specified in the registry; first with the
|
|
// app-specific key and failing that with the global key. If none are found
|
|
// default to a normal dump (GetDumpType will return false either if the key
|
|
// is NULL or if there is no valid DumpType value at its location).
|
|
MINIDUMP_TYPE DumpType;
|
|
if (!GetDumpType(AppSpecificKey, DumpType))
|
|
if (!GetDumpType(DefaultLocalDumpsKey, DumpType))
|
|
DumpType = MiniDumpNormal;
|
|
|
|
// Look to see if a dump location is specified in the registry; first with the
|
|
// app-specific key and failing that with the global key. If none are found
|
|
// we'll just create the dump file in the default temporary file location
|
|
// (GetDumpFolder will return false either if the key is NULL or if there is
|
|
// no valid DumpFolder value at its location).
|
|
bool ExplicitDumpDirectorySet = true;
|
|
SmallString<MAX_PATH> DumpDirectory;
|
|
if (!GetDumpFolder(AppSpecificKey, DumpDirectory))
|
|
if (!GetDumpFolder(DefaultLocalDumpsKey, DumpDirectory))
|
|
ExplicitDumpDirectorySet = false;
|
|
|
|
int FD;
|
|
SmallString<MAX_PATH> DumpPath;
|
|
|
|
if (ExplicitDumpDirectorySet) {
|
|
if (std::error_code EC = fs::create_directories(DumpDirectory))
|
|
return EC;
|
|
if (std::error_code EC = fs::createUniqueFile(
|
|
Twine(DumpDirectory) + "\\" + ProgramName + ".%%%%%%.dmp", FD,
|
|
DumpPath))
|
|
return EC;
|
|
} else if (std::error_code EC =
|
|
fs::createTemporaryFile(ProgramName, "dmp", FD, DumpPath))
|
|
return EC;
|
|
|
|
// Our support functions return a file descriptor but Windows wants a handle.
|
|
ScopedCommonHandle FileHandle(reinterpret_cast<HANDLE>(_get_osfhandle(FD)));
|
|
|
|
if (!fMiniDumpWriteDump(::GetCurrentProcess(), ::GetCurrentProcessId(),
|
|
FileHandle, DumpType, ExceptionInfo, NULL, NULL))
|
|
return mapWindowsError(::GetLastError());
|
|
|
|
llvm::errs() << "Wrote crash dump file \"" << DumpPath << "\"\n";
|
|
return std::error_code();
|
|
}
|
|
|
|
static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep) {
|
|
Cleanup();
|
|
|
|
// We'll automatically write a Minidump file here to help diagnose
|
|
// the nasty sorts of crashes that aren't 100% reproducible from a set of
|
|
// inputs (or in the event that the user is unable or unwilling to provide a
|
|
// reproducible case).
|
|
if (!llvm::sys::Process::AreCoreFilesPrevented()) {
|
|
MINIDUMP_EXCEPTION_INFORMATION ExceptionInfo;
|
|
ExceptionInfo.ThreadId = ::GetCurrentThreadId();
|
|
ExceptionInfo.ExceptionPointers = ep;
|
|
ExceptionInfo.ClientPointers = FALSE;
|
|
|
|
if (std::error_code EC = WriteWindowsDumpFile(&ExceptionInfo))
|
|
llvm::errs() << "Could not write crash dump file: " << EC.message()
|
|
<< "\n";
|
|
}
|
|
|
|
// Initialize the STACKFRAME structure.
|
|
STACKFRAME64 StackFrame = {};
|
|
|
|
#if defined(_M_X64)
|
|
StackFrame.AddrPC.Offset = ep->ContextRecord->Rip;
|
|
StackFrame.AddrPC.Mode = AddrModeFlat;
|
|
StackFrame.AddrStack.Offset = ep->ContextRecord->Rsp;
|
|
StackFrame.AddrStack.Mode = AddrModeFlat;
|
|
StackFrame.AddrFrame.Offset = ep->ContextRecord->Rbp;
|
|
StackFrame.AddrFrame.Mode = AddrModeFlat;
|
|
#elif defined(_M_IX86)
|
|
StackFrame.AddrPC.Offset = ep->ContextRecord->Eip;
|
|
StackFrame.AddrPC.Mode = AddrModeFlat;
|
|
StackFrame.AddrStack.Offset = ep->ContextRecord->Esp;
|
|
StackFrame.AddrStack.Mode = AddrModeFlat;
|
|
StackFrame.AddrFrame.Offset = ep->ContextRecord->Ebp;
|
|
StackFrame.AddrFrame.Mode = AddrModeFlat;
|
|
#elif defined(_M_ARM64) || defined(_M_ARM)
|
|
StackFrame.AddrPC.Offset = ep->ContextRecord->Pc;
|
|
StackFrame.AddrPC.Mode = AddrModeFlat;
|
|
StackFrame.AddrStack.Offset = ep->ContextRecord->Sp;
|
|
StackFrame.AddrStack.Mode = AddrModeFlat;
|
|
#if defined(_M_ARM64)
|
|
StackFrame.AddrFrame.Offset = ep->ContextRecord->Fp;
|
|
#else
|
|
StackFrame.AddrFrame.Offset = ep->ContextRecord->R11;
|
|
#endif
|
|
StackFrame.AddrFrame.Mode = AddrModeFlat;
|
|
#endif
|
|
|
|
HANDLE hProcess = GetCurrentProcess();
|
|
HANDLE hThread = GetCurrentThread();
|
|
PrintStackTraceForThread(llvm::errs(), hProcess, hThread, StackFrame,
|
|
ep->ContextRecord);
|
|
|
|
_exit(ep->ExceptionRecord->ExceptionCode);
|
|
}
|
|
|
|
static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType) {
|
|
// We are running in our very own thread, courtesy of Windows.
|
|
EnterCriticalSection(&CriticalSection);
|
|
Cleanup();
|
|
|
|
// If an interrupt function has been set, go and run one it; otherwise,
|
|
// the process dies.
|
|
void (*IF)() = InterruptFunction;
|
|
InterruptFunction = 0; // Don't run it on another CTRL-C.
|
|
|
|
if (IF) {
|
|
// Note: if the interrupt function throws an exception, there is nothing
|
|
// to catch it in this thread so it will kill the process.
|
|
IF(); // Run it now.
|
|
LeaveCriticalSection(&CriticalSection);
|
|
return TRUE; // Don't kill the process.
|
|
}
|
|
|
|
// Allow normal processing to take place; i.e., the process dies.
|
|
LeaveCriticalSection(&CriticalSection);
|
|
return FALSE;
|
|
}
|
|
|
|
#if __MINGW32__
|
|
// We turned these warnings off for this file so that MinGW-g++ doesn't
|
|
// complain about the ll format specifiers used. Now we are turning the
|
|
// warnings back on. If MinGW starts to support diagnostic stacks, we can
|
|
// replace this with a pop.
|
|
#pragma GCC diagnostic warning "-Wformat"
|
|
#pragma GCC diagnostic warning "-Wformat-extra-args"
|
|
#endif
|