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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-backtrace-win.c Backtrace Generator
*
* Copyright 2004 Eric Poech
* Copyright 2004 Robert Shearman
* Copyright 2010 Patrick von Reth <patrick.vonreth@gmail.com>
* Copyright 2015 Ralf Habacker <ralf.habacker@freenet.de>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include "dbus-internals.h"
#include "dbus-sysdeps.h"
#if !defined (DBUS_DISABLE_ASSERT) || defined(DBUS_ENABLE_EMBEDDED_TESTS)
#if defined(_MSC_VER) || defined(DBUS_WINCE)
# ifdef BACKTRACES
# undef BACKTRACES
# endif
#else
# define BACKTRACES
#endif
#ifdef BACKTRACES
#include "dbus-sysdeps-win.h"
#include <stdio.h>
#include <windows.h>
#include <imagehlp.h>
#define DPRINTF(fmt, ...) fprintf (stderr, fmt, ##__VA_ARGS__)
#ifdef _MSC_VER
#define BOOL int
#define __i386__
#endif
static void dump_backtrace_for_thread (HANDLE hThread)
{
ADDRESS old_address;
STACKFRAME sf;
CONTEXT context;
DWORD dwImageType;
int i = 0;
SymSetOptions (SYMOPT_UNDNAME | SYMOPT_LOAD_LINES);
SymInitialize (GetCurrentProcess (), NULL, TRUE);
/* can't use this function for current thread as GetThreadContext
* doesn't support getting context from current thread */
if (hThread == GetCurrentThread())
return;
DPRINTF ("Backtrace:\n");
_DBUS_ZERO (old_address);
_DBUS_ZERO (context);
context.ContextFlags = CONTEXT_FULL;
SuspendThread (hThread);
if (!GetThreadContext (hThread, &context))
{
DPRINTF ("Couldn't get thread context (error %ld)\n", GetLastError ());
ResumeThread (hThread);
return;
}
_DBUS_ZERO (sf);
#ifdef __i386__
dwImageType = IMAGE_FILE_MACHINE_I386;
sf.AddrFrame.Offset = context.Ebp;
sf.AddrFrame.Mode = AddrModeFlat;
sf.AddrPC.Offset = context.Eip;
sf.AddrPC.Mode = AddrModeFlat;
#elif defined(_M_X64)
dwImageType = IMAGE_FILE_MACHINE_AMD64;
sf.AddrPC.Offset = context.Rip;
sf.AddrPC.Mode = AddrModeFlat;
sf.AddrFrame.Offset = context.Rsp;
sf.AddrFrame.Mode = AddrModeFlat;
sf.AddrStack.Offset = context.Rsp;
sf.AddrStack.Mode = AddrModeFlat;
#elif defined(_M_IA64)
dwImageType = IMAGE_FILE_MACHINE_IA64;
sf.AddrPC.Offset = context.StIIP;
sf.AddrPC.Mode = AddrModeFlat;
sf.AddrFrame.Offset = context.IntSp;
sf.AddrFrame.Mode = AddrModeFlat;
sf.AddrBStore.Offset= context.RsBSP;
sf.AddrBStore.Mode = AddrModeFlat;
sf.AddrStack.Offset = context.IntSp;
sf.AddrStack.Mode = AddrModeFlat;
#else
# error You need to fill in the STACKFRAME structure for your architecture
#endif
/*
backtrace format
<level> <address> <symbol>[+offset] [ '[' <file> ':' <line> ']' ] [ 'in' <module> ]
example:
6 0xf75ade6b wine_switch_to_stack+0x2a [/usr/src/debug/wine-snapshot/libs/wine/port.c:59] in libwine.so.1
*/
while (StackWalk (dwImageType, GetCurrentProcess (),
hThread, &sf, &context, NULL, SymFunctionTableAccess,
SymGetModuleBase, NULL))
{
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(char)];
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
DWORD64 displacement;
IMAGEHLP_LINE line;
DWORD dwDisplacement;
IMAGEHLP_MODULE moduleInfo;
/*
on Wine64 version 1.7.54, we get an infinite number of stack entries
pointing to the same stack frame (_start+0x29 in <wine-loader>)
see bug https://bugs.winehq.org/show_bug.cgi?id=39606
*/
#ifndef __i386__
if (old_address.Offset == sf.AddrPC.Offset)
{
break;
}
#endif
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
if (SymFromAddr (GetCurrentProcess (), sf.AddrPC.Offset, &displacement, pSymbol))
{
if (displacement)
DPRINTF ("%3d %s+0x%I64x", i++, pSymbol->Name, displacement);
else
DPRINTF ("%3d %s", i++, pSymbol->Name);
}
else
DPRINTF ("%3d 0x%Ix", i++, sf.AddrPC.Offset);
line.SizeOfStruct = sizeof(IMAGEHLP_LINE);
if (SymGetLineFromAddr (GetCurrentProcess (), sf.AddrPC.Offset, &dwDisplacement, &line))
{
DPRINTF (" [%s:%ld]", line.FileName, line.LineNumber);
}
moduleInfo.SizeOfStruct = sizeof(moduleInfo);
if (SymGetModuleInfo (GetCurrentProcess (), sf.AddrPC.Offset, &moduleInfo))
{
DPRINTF (" in %s", moduleInfo.ModuleName);
}
DPRINTF ("\n");
old_address = sf.AddrPC;
}
ResumeThread (hThread);
}
static DWORD WINAPI dump_thread_proc (LPVOID lpParameter)
{
dump_backtrace_for_thread ((HANDLE) lpParameter);
return 0;
}
/* cannot get valid context from current thread, so we have to execute
* backtrace from another thread */
static void
dump_backtrace (void)
{
HANDLE hCurrentThread;
HANDLE hThread;
DWORD dwThreadId;
DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
GetCurrentProcess (), &hCurrentThread,
0, FALSE, DUPLICATE_SAME_ACCESS);
hThread = CreateThread (NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread,
0, &dwThreadId);
WaitForSingleObject (hThread, INFINITE);
CloseHandle (hThread);
CloseHandle (hCurrentThread);
}
#endif
#endif /* asserts or tests enabled */
#ifdef BACKTRACES
void _dbus_print_backtrace (void)
{
dump_backtrace ();
}
#else
void _dbus_print_backtrace (void)
{
_dbus_verbose (" D-Bus not compiled with backtrace support\n");
}
#endif
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