1 files changed, 213 insertions, 0 deletions
diff --git a/src/3rdparty/libdbus/dbus/dbus-backtrace-win.c b/src/3rdparty/libdbus/dbus/dbus-backtrace-win.c
new file mode 100644
index 00000000..d9bc2dc4
--- /dev/null
+++ b/src/3rdparty/libdbus/dbus/dbus-backtrace-win.c
@@ -0,0 +1,213 @@
+/* -*- 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