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Produce demangled backtraces under MinGW

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This commit is contained in:
Nick Tiskov 2014-11-28 01:18:34 +03:00
parent 2dd3d1fb22
commit 6bab65e5b4
1 changed files with 43 additions and 4 deletions
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47
src/stacktrace_win.h
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@ -23,6 +23,9 @@
#include <stdio.h> #include <stdio.h>
#include <QTextStream> #include <QTextStream>
#ifdef __MINGW32__
#include <cxxabi.h>
#endif
namespace straceWin namespace straceWin
{ {
@ -31,8 +34,27 @@ namespace straceWin
BOOL CALLBACK EnumModulesCB(LPCSTR, DWORD64, PVOID); BOOL CALLBACK EnumModulesCB(LPCSTR, DWORD64, PVOID);
const QString getBacktrace(); const QString getBacktrace();
struct EnumModulesContext; struct EnumModulesContext;
// Also works for MinGW64
#ifdef __MINGW32__
void demangle(QString& str);
#endif
} }
#ifdef __MINGW32__
void straceWin::demangle(QString& str)
{
char const* inStr = qPrintable("_" + str); // Really need that underline or demangling will fail
int status = 0;
size_t outSz = 0;
char* demangled_name = abi::__cxa_demangle(inStr, 0, &outSz, &status);
if (status == 0) {
str = QString::fromLocal8Bit(demangled_name);
if (outSz > 0)
free(demangled_name);
}
}
#endif
void straceWin::loadHelpStackFrame(IMAGEHLP_STACK_FRAME& ihsf, const STACKFRAME64& stackFrame) void straceWin::loadHelpStackFrame(IMAGEHLP_STACK_FRAME& ihsf, const STACKFRAME64& stackFrame)
{ {
ZeroMemory(&ihsf, sizeof(IMAGEHLP_STACK_FRAME)); ZeroMemory(&ihsf, sizeof(IMAGEHLP_STACK_FRAME));
@ -42,6 +64,7 @@ void straceWin::loadHelpStackFrame(IMAGEHLP_STACK_FRAME& ihsf, const STACKFRAME6
BOOL CALLBACK straceWin::EnumSymbolsCB(PSYMBOL_INFO symInfo, ULONG size, PVOID user) BOOL CALLBACK straceWin::EnumSymbolsCB(PSYMBOL_INFO symInfo, ULONG size, PVOID user)
{ {
Q_UNUSED(size)
QStringList* params = (QStringList*)user; QStringList* params = (QStringList*)user;
if (symInfo->Flags & SYMFLAG_PARAMETER) if (symInfo->Flags & SYMFLAG_PARAMETER)
params->append(symInfo->Name); params->append(symInfo->Name);
@ -58,6 +81,7 @@ struct straceWin::EnumModulesContext
BOOL CALLBACK straceWin::EnumModulesCB(LPCSTR ModuleName, DWORD64 BaseOfDll, PVOID UserContext) BOOL CALLBACK straceWin::EnumModulesCB(LPCSTR ModuleName, DWORD64 BaseOfDll, PVOID UserContext)
{ {
Q_UNUSED(ModuleName)
IMAGEHLP_MODULE64 mod; IMAGEHLP_MODULE64 mod;
EnumModulesContext* context = (EnumModulesContext*)UserContext; EnumModulesContext* context = (EnumModulesContext*)UserContext;
mod.SizeOfStruct = sizeof(IMAGEHLP_MODULE64); mod.SizeOfStruct = sizeof(IMAGEHLP_MODULE64);
@ -194,21 +218,36 @@ const QString straceWin::getBacktrace()
fileName = fileName.mid(slashPos + 1); fileName = fileName.mid(slashPos + 1);
} }
QString funcName; QString funcName;
if(SymFromAddr(hProcess, ihsf.InstructionOffset, &dwDisplacement, pSymbol)) if(SymFromAddr(hProcess, ihsf.InstructionOffset, &dwDisplacement, pSymbol)) {
funcName = QString(pSymbol->Name); funcName = QString(pSymbol->Name);
else #ifdef __MINGW32__
demangle(funcName);
#endif
}
else {
funcName = QString("0x%1").arg(ihsf.InstructionOffset, 8, 16, QLatin1Char('0')); funcName = QString("0x%1").arg(ihsf.InstructionOffset, 8, 16, QLatin1Char('0'));
QStringList params; }
SymSetContext(hProcess, &ihsf, NULL); SymSetContext(hProcess, &ihsf, NULL);
#ifndef __MINGW32__
QStringList params;
SymEnumSymbols(hProcess, 0, NULL, EnumSymbolsCB, (PVOID)&params); SymEnumSymbols(hProcess, 0, NULL, EnumSymbolsCB, (PVOID)&params);
#endif
QString insOffset = QString("0x%1").arg(ihsf.InstructionOffset, 16, 16, QLatin1Char('0')); QString insOffset = QString("0x%1").arg(ihsf.InstructionOffset, 16, 16, QLatin1Char('0'));
QString debugLine = QString("#%1 %2 %3 %4(%5)") QString formatLine = "#%1 %2 %3 %4";
#ifndef __MINGW32__
formatLine += "(%5)";
#endif
QString debugLine = formatLine
.arg(i, 3, 10) .arg(i, 3, 10)
.arg(fileName, -20) .arg(fileName, -20)
.arg(insOffset, -11) .arg(insOffset, -11)
.arg(funcName) .arg(funcName)
#ifndef __MINGW32__
.arg(params.join(", ")); .arg(params.join(", "));
#else
;
#endif
logStream << debugLine << '\n'; logStream << debugLine << '\n';
i++; i++;
} }