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changeset 12917:d223546bf49d draft

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(svn r17409) -Codechange: split the crash log and other windows 'glue' code
author rubidium <rubidium@openttd.org>
date Thu, 03 Sep 2009 21:56:29 +0000
parents 904c1b30b7d6
children d595a7dce1de
files projects/openttd_vs80.vcproj projects/openttd_vs90.vcproj source.list src/os/windows/crashlog_win.cpp src/os/windows/win32.cpp
diffstat 5 files changed, 545 insertions(+), 518 deletions(-) [+]
line wrap: on
line diff
--- a/projects/openttd_vs80.vcproj
+++ b/projects/openttd_vs80.vcproj
@@ -652,10 +652,6 @@
 				>
 			</File>
 			<File
-				RelativePath=".\..\src\os\windows\ottdres.rc"
-				>
-			</File>
-			<File
 				RelativePath=".\..\src\pathfind.cpp"
 				>
 			</File>
@@ -760,10 +756,6 @@
 				>
 			</File>
 			<File
-				RelativePath=".\..\src\os\windows\win32.cpp"
-				>
-			</File>
-			<File
 				RelativePath=".\..\src\window.cpp"
 				>
 			</File>
@@ -3573,6 +3565,22 @@
 			</File>
 		</Filter>
 		<Filter
+			Name="Windows files"
+			>
+			<File
+				RelativePath=".\..\src\os\windows\crashlog_win.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\..\src\os\windows\ottdres.rc"
+				>
+			</File>
+			<File
+				RelativePath=".\..\src\os\windows\win32.cpp"
+				>
+			</File>
+		</Filter>
+		<Filter
 			Name="Threading"
 			>
 			<File
--- a/projects/openttd_vs90.vcproj
+++ b/projects/openttd_vs90.vcproj
@@ -649,10 +649,6 @@
 				>
 			</File>
 			<File
-				RelativePath=".\..\src\os\windows\ottdres.rc"
-				>
-			</File>
-			<File
 				RelativePath=".\..\src\pathfind.cpp"
 				>
 			</File>
@@ -757,10 +753,6 @@
 				>
 			</File>
 			<File
-				RelativePath=".\..\src\os\windows\win32.cpp"
-				>
-			</File>
-			<File
 				RelativePath=".\..\src\window.cpp"
 				>
 			</File>
@@ -3570,6 +3562,22 @@
 			</File>
 		</Filter>
 		<Filter
+			Name="Windows files"
+			>
+			<File
+				RelativePath=".\..\src\os\windows\crashlog_win.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\..\src\os\windows\ottdres.rc"
+				>
+			</File>
+			<File
+				RelativePath=".\..\src\os\windows\win32.cpp"
+				>
+			</File>
+		</Filter>
+		<Filter
 			Name="Threading"
 			>
 			<File
--- a/source.list
+++ b/source.list
@@ -48,12 +48,6 @@
 npf.cpp
 openttd.cpp
 os_timer.cpp
-#if WIN32
-	os/windows/ottdres.rc
-#end
-#if WINCE
-	os/windows/ottdres.rc
-#end
 pathfind.cpp
 pbs.cpp
 queue.cpp
@@ -80,7 +74,6 @@
 #if WIN32
 #else
 	#if WINCE
-		os/windows/win32.cpp
 	#else
 		#if OS2
 			os/os2/os2.cpp
@@ -94,9 +87,6 @@
 viewport.cpp
 waypoint.cpp
 widget.cpp
-#if WIN32
-	os/windows/win32.cpp
-#end
 window.cpp
 
 # Header Files
@@ -923,6 +913,17 @@
 	#end
 #end
 
+# Windows files
+#if WIN32
+	os/windows/crashlog_win.cpp
+	os/windows/ottdres.rc
+	os/windows/win32.cpp
+#end
+#if WINCE
+	os/windows/ottdres.rc
+	os/windows/win32.cpp
+#end
+
 # Threading
 thread/thread.h
 #if HAVE_THREAD
new file mode 100644
--- /dev/null
+++ b/src/os/windows/crashlog_win.cpp
@@ -0,0 +1,500 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file crashlog_win.cpp Implementation of a crashlogger for Windows */
+
+#include "../../stdafx.h"
+#include <windows.h>
+#include "win32.h"
+
+#ifdef _MSC_VER
+static const char *_exception_string = NULL;
+void SetExceptionString(const char *s, ...)
+{
+	va_list va;
+	char buf[512];
+
+	va_start(va, s);
+	vsnprintf(buf, lengthof(buf), s, va);
+	va_end(va);
+
+	_exception_string = strdup(buf);
+}
+#endif
+
+#if defined(_MSC_VER) && !defined(WINCE)
+
+#include "../../core/alloc_func.hpp"
+#include "../../string_func.h"
+#include "../../gamelog.h"
+#include "../../saveload/saveload.h"
+#include "../../fileio_func.h"
+#include "../../rev.h"
+#include <dbghelp.h>
+#include "../../strings_func.h"
+
+static void *_safe_esp;
+static char *_crash_msg;
+static bool _expanded;
+static bool _did_emerg_save;
+
+struct DebugFileInfo {
+	uint32 size;
+	uint32 crc32;
+	SYSTEMTIME file_time;
+};
+
+static uint32 *_crc_table;
+
+static void MakeCRCTable(uint32 *table)
+{
+	uint32 crc, poly = 0xEDB88320L;
+	int i;
+	int j;
+
+	_crc_table = table;
+
+	for (i = 0; i != 256; i++) {
+		crc = i;
+		for (j = 8; j != 0; j--) {
+			crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);
+		}
+		table[i] = crc;
+	}
+}
+
+static uint32 CalcCRC(byte *data, uint size, uint32 crc)
+{
+	for (; size > 0; size--) {
+		crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];
+	}
+	return crc;
+}
+
+static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)
+{
+	HANDLE file;
+	memset(dfi, 0, sizeof(*dfi));
+
+	file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
+	if (file != INVALID_HANDLE_VALUE) {
+		byte buffer[1024];
+		DWORD numread;
+		uint32 filesize = 0;
+		FILETIME write_time;
+		uint32 crc = (uint32)-1;
+
+		for (;;) {
+			if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)
+				break;
+			filesize += numread;
+			crc = CalcCRC(buffer, numread, crc);
+		}
+		dfi->size = filesize;
+		dfi->crc32 = crc ^ (uint32)-1;
+
+		if (GetFileTime(file, NULL, NULL, &write_time)) {
+			FileTimeToSystemTime(&write_time, &dfi->file_time);
+		}
+		CloseHandle(file);
+	}
+}
+
+
+static char *PrintModuleInfo(char *output, const char *last, HMODULE mod)
+{
+	TCHAR buffer[MAX_PATH];
+	DebugFileInfo dfi;
+
+	GetModuleFileName(mod, buffer, MAX_PATH);
+	GetFileInfo(&dfi, buffer);
+	output += seprintf(output, last, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",
+		WIDE_TO_MB(buffer),
+		mod,
+		dfi.size,
+		dfi.crc32,
+		dfi.file_time.wYear,
+		dfi.file_time.wMonth,
+		dfi.file_time.wDay,
+		dfi.file_time.wHour,
+		dfi.file_time.wMinute,
+		dfi.file_time.wSecond
+	);
+	return output;
+}
+
+static char *PrintModuleList(char *output, const char *last)
+{
+	BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);
+
+	if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {
+		HMODULE modules[100];
+		DWORD needed;
+		BOOL res;
+
+		HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
+		if (proc != NULL) {
+			res = EnumProcessModules(proc, modules, sizeof(modules), &needed);
+			CloseHandle(proc);
+			if (res) {
+				size_t count = min(needed / sizeof(HMODULE), lengthof(modules));
+
+				for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, last, modules[i]);
+				return output;
+			}
+		}
+	}
+	output = PrintModuleInfo(output, last, NULL);
+	return output;
+}
+
+static const TCHAR _crash_desc[] =
+	_T("A serious fault condition occured in the game. The game will shut down.\n")
+	_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")
+	_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")
+	_T("The information contained in the report is displayed below.\n")
+	_T("Press \"Emergency save\" to attempt saving the game.");
+
+static const TCHAR _save_succeeded[] =
+	_T("Emergency save succeeded.\n")
+	_T("Be aware that critical parts of the internal game state may have become ")
+	_T("corrupted. The saved game is not guaranteed to work.");
+
+static const TCHAR _emergency_crash[] =
+	_T("A serious fault condition occured in the game. The game will shut down.\n")
+	_T("As you loaded an emergency savegame no crash information will be generated.\n");
+
+static bool EmergencySave()
+{
+	GamelogStartAction(GLAT_EMERGENCY);
+	GamelogEmergency();
+	GamelogStopAction();
+	SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);
+	return true;
+}
+
+static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };
+
+static void SetWndSize(HWND wnd, int mode)
+{
+	RECT r, r2;
+
+	GetWindowRect(wnd, &r);
+	SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);
+
+	if (mode >= 0) {
+		GetWindowRect(GetDlgItem(wnd, 11), &r2);
+		int offs = r2.bottom - r2.top + 10;
+		if (!mode) offs = -offs;
+		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,
+			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);
+	} else {
+		SetWindowPos(wnd, HWND_TOPMOST,
+			(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,
+			(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,
+			0, 0, SWP_NOSIZE);
+	}
+}
+
+static bool DoEmergencySave(HWND wnd)
+{
+	bool b = false;
+
+	EnableWindow(GetDlgItem(wnd, 13), FALSE);
+	_did_emerg_save = true;
+	__try {
+		b = EmergencySave();
+	} __except (1) {}
+	return b;
+}
+
+static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+	switch (msg) {
+		case WM_INITDIALOG: {
+#if defined(UNICODE)
+			/* We need to put the crash-log in a seperate buffer because the default
+			 * buffer in MB_TO_WIDE is not large enough (512 chars) */
+			wchar_t crash_msgW[8096];
+#endif
+			SetDlgItemText(wnd, 10, _crash_desc);
+			SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));
+			SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
+			SetWndSize(wnd, -1);
+		} return TRUE;
+		case WM_COMMAND:
+			switch (wParam) {
+				case 12: // Close
+					ExitProcess(0);
+				case 13: // Emergency save
+					if (DoEmergencySave(wnd)) {
+						MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);
+					} else {
+						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);
+					}
+					break;
+				case 15: // Expand window to show crash-message
+					_expanded ^= 1;
+					SetWndSize(wnd, _expanded);
+					break;
+			}
+			return TRUE;
+		case WM_CLOSE: ExitProcess(0);
+	}
+
+	return FALSE;
+}
+
+static void Handler2()
+{
+	ShowCursor(TRUE);
+	ShowWindow(GetActiveWindow(), FALSE);
+	DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);
+}
+
+extern bool CloseConsoleLogIfActive();
+
+static HANDLE _file_crash_log;
+
+static void GamelogPrintCrashLogProc(const char *s)
+{
+	DWORD num_written;
+	WriteFile(_file_crash_log, s, (DWORD)strlen(s), &num_written, NULL);
+	WriteFile(_file_crash_log, "\r\n", (DWORD)strlen("\r\n"), &num_written, NULL);
+}
+
+/** Amount of output for the execption handler. */
+static const int EXCEPTION_OUTPUT_SIZE = 8192;
+
+static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
+{
+	char *output;
+	static bool had_exception = false;
+
+	if (had_exception) ExitProcess(0);
+	if (GamelogTestEmergency()) {
+		MessageBox(NULL, _emergency_crash, _T("Fatal Application Failure"), MB_ICONERROR);
+		ExitProcess(0);
+	}
+	had_exception = true;
+
+	MakeCRCTable(AllocaM(uint32, 256));
+	_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, EXCEPTION_OUTPUT_SIZE);
+	const char *last = output + EXCEPTION_OUTPUT_SIZE - 1;
+
+	{
+		SYSTEMTIME time;
+		GetLocalTime(&time);
+		output += seprintf(output, last,
+			"*** OpenTTD Crash Report ***\r\n"
+			"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"
+			"Build: %s (%d) built on " __DATE__ " " __TIME__ "\r\n",
+			time.wYear,
+			time.wMonth,
+			time.wDay,
+			time.wHour,
+			time.wMinute,
+			time.wSecond,
+			_openttd_revision,
+			_openttd_revision_modified
+		);
+	}
+
+	if (_exception_string)
+		output += seprintf(output, last, "Reason: %s\r\n", _exception_string);
+
+	output += seprintf(output, last, "Language: %s\r\n", _dynlang.curr_file);
+
+#ifdef _M_AMD64
+	output += seprintf(output, last, "Exception %.8X at %.16IX\r\n"
+		"Registers:\r\n"
+		"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"
+		"RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\r\n"
+		"R8:  %.16llX R9:  %.16llX R10: %.16llX R11: %.16llX\r\n"
+		"R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\r\n"
+		"RIP: %.16llX EFLAGS: %.8X\r\n"
+		"\r\nBytes at CS:RIP:\r\n",
+		ep->ExceptionRecord->ExceptionCode,
+		ep->ExceptionRecord->ExceptionAddress,
+		ep->ContextRecord->Rax,
+		ep->ContextRecord->Rbx,
+		ep->ContextRecord->Rcx,
+		ep->ContextRecord->Rdx,
+		ep->ContextRecord->Rsi,
+		ep->ContextRecord->Rdi,
+		ep->ContextRecord->Rbp,
+		ep->ContextRecord->Rsp,
+		ep->ContextRecord->R8,
+		ep->ContextRecord->R9,
+		ep->ContextRecord->R10,
+		ep->ContextRecord->R11,
+		ep->ContextRecord->R12,
+		ep->ContextRecord->R13,
+		ep->ContextRecord->R14,
+		ep->ContextRecord->R15,
+		ep->ContextRecord->Rip,
+		ep->ContextRecord->EFlags
+	);
+#else
+	output += seprintf(output, last, "Exception %.8X at %.8p\r\n"
+		"Registers:\r\n"
+		" EAX: %.8X EBX: %.8X ECX: %.8X EDX: %.8X\r\n"
+		" ESI: %.8X EDI: %.8X EBP: %.8X ESP: %.8X\r\n"
+		" EIP: %.8X EFLAGS: %.8X\r\n"
+		"\r\nBytes at CS:EIP:\r\n",
+		ep->ExceptionRecord->ExceptionCode,
+		ep->ExceptionRecord->ExceptionAddress,
+		ep->ContextRecord->Eax,
+		ep->ContextRecord->Ebx,
+		ep->ContextRecord->Ecx,
+		ep->ContextRecord->Edx,
+		ep->ContextRecord->Esi,
+		ep->ContextRecord->Edi,
+		ep->ContextRecord->Ebp,
+		ep->ContextRecord->Esp,
+		ep->ContextRecord->Eip,
+		ep->ContextRecord->EFlags
+	);
+#endif
+
+	{
+#ifdef _M_AMD64
+		byte *b = (byte*)ep->ContextRecord->Rip;
+#else
+		byte *b = (byte*)ep->ContextRecord->Eip;
+#endif
+		int i;
+		for (i = 0; i != 24; i++) {
+			if (IsBadReadPtr(b, 1)) {
+				output += seprintf(output, last, " ??"); // OCR: WAS: , 0);
+			} else {
+				output += seprintf(output, last, " %.2X", *b);
+			}
+			b++;
+		}
+		output += seprintf(output, last,
+			"\r\n"
+			"\r\nStack trace: \r\n"
+		);
+	}
+
+	{
+		int i, j;
+#ifdef _M_AMD64
+		uint32 *b = (uint32*)ep->ContextRecord->Rsp;
+#else
+		uint32 *b = (uint32*)ep->ContextRecord->Esp;
+#endif
+		for (j = 0; j != 24; j++) {
+			for (i = 0; i != 8; i++) {
+				if (IsBadReadPtr(b, sizeof(uint32))) {
+					output += seprintf(output, last, " ????????"); // OCR: WAS - , 0);
+				} else {
+					output += seprintf(output, last, " %.8X", *b);
+				}
+				b++;
+			}
+			output += seprintf(output, last, "\r\n");
+		}
+	}
+
+	output += seprintf(output, last, "\r\nModule information:\r\n");
+	output = PrintModuleList(output, last);
+
+	{
+		_OSVERSIONINFOA os;
+		os.dwOSVersionInfoSize = sizeof(os);
+		GetVersionExA(&os);
+		output += seprintf(output, last, "\r\nSystem information:\r\n"
+			" Windows version %d.%d %d %s\r\n\r\n",
+			os.dwMajorVersion, os.dwMinorVersion, os.dwBuildNumber, os.szCSDVersion);
+	}
+
+	_file_crash_log = CreateFile(_T("crash.log"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
+
+	if (_file_crash_log != INVALID_HANDLE_VALUE) {
+		DWORD num_written;
+		WriteFile(_file_crash_log, _crash_msg, output - _crash_msg, &num_written, NULL);
+	}
+
+#if !defined(_DEBUG)
+	HMODULE dbghelp = LoadLibrary(_T("dbghelp.dll"));
+	if (dbghelp != NULL) {
+		typedef BOOL (WINAPI *MiniDumpWriteDump_t)(HANDLE, DWORD, HANDLE,
+				MINIDUMP_TYPE,
+				CONST PMINIDUMP_EXCEPTION_INFORMATION,
+				CONST PMINIDUMP_USER_STREAM_INFORMATION,
+				CONST PMINIDUMP_CALLBACK_INFORMATION);
+		MiniDumpWriteDump_t funcMiniDumpWriteDump = (MiniDumpWriteDump_t)GetProcAddress(dbghelp, "MiniDumpWriteDump");
+		if (funcMiniDumpWriteDump != NULL) {
+			HANDLE file  = CreateFile(_T("crash.dmp"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
+			HANDLE proc  = GetCurrentProcess();
+			DWORD procid = GetCurrentProcessId();
+			MINIDUMP_EXCEPTION_INFORMATION mdei;
+			MINIDUMP_USER_STREAM userstream;
+			MINIDUMP_USER_STREAM_INFORMATION musi;
+			char msg[] = "****** Built on " __DATE__ " " __TIME__ ". ******";
+
+			userstream.Type        = LastReservedStream + 1;
+			userstream.Buffer      = msg;
+			userstream.BufferSize  = sizeof(msg);
+
+			musi.UserStreamCount   = 1;
+			musi.UserStreamArray   = &userstream;
+
+			mdei.ThreadId = GetCurrentThreadId();
+			mdei.ExceptionPointers  = ep;
+			mdei.ClientPointers     = false;
+
+			funcMiniDumpWriteDump(proc, procid, file, MiniDumpWithDataSegs, &mdei, &musi, NULL);
+		}
+		FreeLibrary(dbghelp);
+	}
+#endif
+
+	if (_file_crash_log != INVALID_HANDLE_VALUE) {
+		GamelogPrint(&GamelogPrintCrashLogProc);
+		CloseHandle(_file_crash_log);
+	}
+
+	/* Close any possible log files */
+	CloseConsoleLogIfActive();
+
+	if (_safe_esp) {
+#ifdef _M_AMD64
+		ep->ContextRecord->Rip = (DWORD64)Handler2;
+		ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
+#else
+		ep->ContextRecord->Eip = (DWORD)Handler2;
+		ep->ContextRecord->Esp = (DWORD)_safe_esp;
+#endif
+		return EXCEPTION_CONTINUE_EXECUTION;
+	}
+
+
+	return EXCEPTION_EXECUTE_HANDLER;
+}
+
+#ifdef _M_AMD64
+extern "C" void *_get_safe_esp();
+#endif
+
+void Win32InitializeExceptions()
+{
+#ifdef _M_AMD64
+	_safe_esp = _get_safe_esp();
+#else
+	_asm {
+		mov _safe_esp, esp
+	}
+#endif
+
+	SetUnhandledExceptionFilter(ExceptionHandler);
+}
+#endif /* _MSC_VER */
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -10,35 +10,21 @@
 /** @file win32.cpp Implementation of MS Windows system calls */
 
 #include "../../stdafx.h"
-#include "../../openttd.h"
 #include "../../debug.h"
-#include "../../saveload/saveload.h"
 #include "../../gfx_func.h"
 #include "../../textbuf_gui.h"
 #include "../../fileio_func.h"
 #include "../../fios.h"
-#include "../../rev.h"
 #include <windows.h>
-#include <winnt.h>
-#include <wininet.h>
 #include <fcntl.h>
 #include <shlobj.h> /* SHGetFolderPath */
-#include "../../variables.h"
 #include "win32.h"
 #include "../../core/alloc_func.hpp"
 #include "../../functions.h"
 #include "../../core/random_func.hpp"
-#include "../../core/bitmath_func.hpp"
 #include "../../string_func.h"
-#include "../../gamelog.h"
-#include <ctype.h>
 #include <errno.h>
-#include <sys/types.h>
 #include <sys/stat.h>
-#if defined(_MSC_VER) && !defined(WINCE)
-	#include <dbghelp.h>
-	#include "../../strings_func.h"
-#endif
 
 static bool _has_console;
 
@@ -82,21 +68,6 @@
 	return true;
 }
 
-#ifdef _MSC_VER
-static const char *_exception_string = NULL;
-void SetExceptionString(const char *s, ...)
-{
-	va_list va;
-	char buf[512];
-
-	va_start(va, s);
-	vsnprintf(buf, lengthof(buf), s, va);
-	va_end(va);
-
-	_exception_string = strdup(buf);
-}
-#endif
-
 void ShowOSErrorBox(const char *buf, bool system)
 {
 	MyShowCursor(true);
@@ -105,474 +76,12 @@
 /* if exception tracker is enabled, we crash here to let the exception handler handle it. */
 #if defined(WIN32_EXCEPTION_TRACKER) && !defined(_DEBUG)
 	if (system) {
-		_exception_string = buf;
+		SetExceptionString("%s", buf);
 		*(byte*)0 = 0;
 	}
 #endif
 }
 
-#if defined(_MSC_VER) && !defined(WINCE)
-
-static void *_safe_esp;
-static char *_crash_msg;
-static bool _expanded;
-static bool _did_emerg_save;
-
-struct DebugFileInfo {
-	uint32 size;
-	uint32 crc32;
-	SYSTEMTIME file_time;
-};
-
-static uint32 *_crc_table;
-
-static void MakeCRCTable(uint32 *table)
-{
-	uint32 crc, poly = 0xEDB88320L;
-	int i;
-	int j;
-
-	_crc_table = table;
-
-	for (i = 0; i != 256; i++) {
-		crc = i;
-		for (j = 8; j != 0; j--) {
-			crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);
-		}
-		table[i] = crc;
-	}
-}
-
-static uint32 CalcCRC(byte *data, uint size, uint32 crc)
-{
-	for (; size > 0; size--) {
-		crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];
-	}
-	return crc;
-}
-
-static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)
-{
-	HANDLE file;
-	memset(dfi, 0, sizeof(*dfi));
-
-	file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
-	if (file != INVALID_HANDLE_VALUE) {
-		byte buffer[1024];
-		DWORD numread;
-		uint32 filesize = 0;
-		FILETIME write_time;
-		uint32 crc = (uint32)-1;
-
-		for (;;) {
-			if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)
-				break;
-			filesize += numread;
-			crc = CalcCRC(buffer, numread, crc);
-		}
-		dfi->size = filesize;
-		dfi->crc32 = crc ^ (uint32)-1;
-
-		if (GetFileTime(file, NULL, NULL, &write_time)) {
-			FileTimeToSystemTime(&write_time, &dfi->file_time);
-		}
-		CloseHandle(file);
-	}
-}
-
-
-static char *PrintModuleInfo(char *output, const char *last, HMODULE mod)
-{
-	TCHAR buffer[MAX_PATH];
-	DebugFileInfo dfi;
-
-	GetModuleFileName(mod, buffer, MAX_PATH);
-	GetFileInfo(&dfi, buffer);
-	output += seprintf(output, last, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",
-		WIDE_TO_MB(buffer),
-		mod,
-		dfi.size,
-		dfi.crc32,
-		dfi.file_time.wYear,
-		dfi.file_time.wMonth,
-		dfi.file_time.wDay,
-		dfi.file_time.wHour,
-		dfi.file_time.wMinute,
-		dfi.file_time.wSecond
-	);
-	return output;
-}
-
-static char *PrintModuleList(char *output, const char *last)
-{
-	BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);
-
-	if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {
-		HMODULE modules[100];
-		DWORD needed;
-		BOOL res;
-
-		HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
-		if (proc != NULL) {
-			res = EnumProcessModules(proc, modules, sizeof(modules), &needed);
-			CloseHandle(proc);
-			if (res) {
-				size_t count = min(needed / sizeof(HMODULE), lengthof(modules));
-
-				for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, last, modules[i]);
-				return output;
-			}
-		}
-	}
-	output = PrintModuleInfo(output, last, NULL);
-	return output;
-}
-
-static const TCHAR _crash_desc[] =
-	_T("A serious fault condition occured in the game. The game will shut down.\n")
-	_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")
-	_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")
-	_T("The information contained in the report is displayed below.\n")
-	_T("Press \"Emergency save\" to attempt saving the game.");
-
-static const TCHAR _save_succeeded[] =
-	_T("Emergency save succeeded.\n")
-	_T("Be aware that critical parts of the internal game state may have become ")
-	_T("corrupted. The saved game is not guaranteed to work.");
-
-static const TCHAR _emergency_crash[] =
-	_T("A serious fault condition occured in the game. The game will shut down.\n")
-	_T("As you loaded an emergency savegame no crash information will be generated.\n");
-
-static bool EmergencySave()
-{
-	GamelogStartAction(GLAT_EMERGENCY);
-	GamelogEmergency();
-	GamelogStopAction();
-	SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);
-	return true;
-}
-
-static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };
-
-static void SetWndSize(HWND wnd, int mode)
-{
-	RECT r, r2;
-
-	GetWindowRect(wnd, &r);
-	SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);
-
-	if (mode >= 0) {
-		GetWindowRect(GetDlgItem(wnd, 11), &r2);
-		int offs = r2.bottom - r2.top + 10;
-		if (!mode) offs = -offs;
-		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,
-			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);
-	} else {
-		SetWindowPos(wnd, HWND_TOPMOST,
-			(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,
-			(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,
-			0, 0, SWP_NOSIZE);
-	}
-}
-
-static bool DoEmergencySave(HWND wnd)
-{
-	bool b = false;
-
-	EnableWindow(GetDlgItem(wnd, 13), FALSE);
-	_did_emerg_save = true;
-	__try {
-		b = EmergencySave();
-	} __except (1) {}
-	return b;
-}
-
-static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
-{
-	switch (msg) {
-		case WM_INITDIALOG: {
-#if defined(UNICODE)
-			/* We need to put the crash-log in a seperate buffer because the default
-			 * buffer in MB_TO_WIDE is not large enough (512 chars) */
-			wchar_t crash_msgW[8096];
-#endif
-			SetDlgItemText(wnd, 10, _crash_desc);
-			SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));
-			SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
-			SetWndSize(wnd, -1);
-		} return TRUE;
-		case WM_COMMAND:
-			switch (wParam) {
-				case 12: // Close
-					ExitProcess(0);
-				case 13: // Emergency save
-					if (DoEmergencySave(wnd)) {
-						MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);
-					} else {
-						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);
-					}
-					break;
-				case 15: // Expand window to show crash-message
-					_expanded ^= 1;
-					SetWndSize(wnd, _expanded);
-					break;
-			}
-			return TRUE;
-		case WM_CLOSE: ExitProcess(0);
-	}
-
-	return FALSE;
-}
-
-static void Handler2()
-{
-	ShowCursor(TRUE);
-	ShowWindow(GetActiveWindow(), FALSE);
-	DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);
-}
-
-extern bool CloseConsoleLogIfActive();
-
-static HANDLE _file_crash_log;
-
-static void GamelogPrintCrashLogProc(const char *s)
-{
-	DWORD num_written;
-	WriteFile(_file_crash_log, s, (DWORD)strlen(s), &num_written, NULL);
-	WriteFile(_file_crash_log, "\r\n", (DWORD)strlen("\r\n"), &num_written, NULL);
-}
-
-/** Amount of output for the execption handler. */
-static const int EXCEPTION_OUTPUT_SIZE = 8192;
-
-static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
-{
-	char *output;
-	static bool had_exception = false;
-
-	if (had_exception) ExitProcess(0);
-	if (GamelogTestEmergency()) {
-		MessageBox(NULL, _emergency_crash, _T("Fatal Application Failure"), MB_ICONERROR);
-		ExitProcess(0);
-	}
-	had_exception = true;
-
-	MakeCRCTable(AllocaM(uint32, 256));
-	_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, EXCEPTION_OUTPUT_SIZE);
-	const char *last = output + EXCEPTION_OUTPUT_SIZE - 1;
-
-	{
-		SYSTEMTIME time;
-		GetLocalTime(&time);
-		output += seprintf(output, last,
-			"*** OpenTTD Crash Report ***\r\n"
-			"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"
-			"Build: %s (%d) built on " __DATE__ " " __TIME__ "\r\n",
-			time.wYear,
-			time.wMonth,
-			time.wDay,
-			time.wHour,
-			time.wMinute,
-			time.wSecond,
-			_openttd_revision,
-			_openttd_revision_modified
-		);
-	}
-
-	if (_exception_string)
-		output += seprintf(output, last, "Reason: %s\r\n", _exception_string);
-
-	output += seprintf(output, last, "Language: %s\r\n", _dynlang.curr_file);
-
-#ifdef _M_AMD64
-	output += seprintf(output, last, "Exception %.8X at %.16IX\r\n"
-		"Registers:\r\n"
-		"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"
-		"RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\r\n"
-		"R8:  %.16llX R9:  %.16llX R10: %.16llX R11: %.16llX\r\n"
-		"R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\r\n"
-		"RIP: %.16llX EFLAGS: %.8X\r\n"
-		"\r\nBytes at CS:RIP:\r\n",
-		ep->ExceptionRecord->ExceptionCode,
-		ep->ExceptionRecord->ExceptionAddress,
-		ep->ContextRecord->Rax,
-		ep->ContextRecord->Rbx,
-		ep->ContextRecord->Rcx,
-		ep->ContextRecord->Rdx,
-		ep->ContextRecord->Rsi,
-		ep->ContextRecord->Rdi,
-		ep->ContextRecord->Rbp,
-		ep->ContextRecord->Rsp,
-		ep->ContextRecord->R8,
-		ep->ContextRecord->R9,
-		ep->ContextRecord->R10,
-		ep->ContextRecord->R11,
-		ep->ContextRecord->R12,
-		ep->ContextRecord->R13,
-		ep->ContextRecord->R14,
-		ep->ContextRecord->R15,
-		ep->ContextRecord->Rip,
-		ep->ContextRecord->EFlags
-	);
-#else
-	output += seprintf(output, last, "Exception %.8X at %.8p\r\n"
-		"Registers:\r\n"
-		" EAX: %.8X EBX: %.8X ECX: %.8X EDX: %.8X\r\n"
-		" ESI: %.8X EDI: %.8X EBP: %.8X ESP: %.8X\r\n"
-		" EIP: %.8X EFLAGS: %.8X\r\n"
-		"\r\nBytes at CS:EIP:\r\n",
-		ep->ExceptionRecord->ExceptionCode,
-		ep->ExceptionRecord->ExceptionAddress,
-		ep->ContextRecord->Eax,
-		ep->ContextRecord->Ebx,
-		ep->ContextRecord->Ecx,
-		ep->ContextRecord->Edx,
-		ep->ContextRecord->Esi,
-		ep->ContextRecord->Edi,
-		ep->ContextRecord->Ebp,
-		ep->ContextRecord->Esp,
-		ep->ContextRecord->Eip,
-		ep->ContextRecord->EFlags
-	);
-#endif
-
-	{
-#ifdef _M_AMD64
-		byte *b = (byte*)ep->ContextRecord->Rip;
-#else
-		byte *b = (byte*)ep->ContextRecord->Eip;
-#endif
-		int i;
-		for (i = 0; i != 24; i++) {
-			if (IsBadReadPtr(b, 1)) {
-				output += seprintf(output, last, " ??"); // OCR: WAS: , 0);
-			} else {
-				output += seprintf(output, last, " %.2X", *b);
-			}
-			b++;
-		}
-		output += seprintf(output, last,
-			"\r\n"
-			"\r\nStack trace: \r\n"
-		);
-	}
-
-	{
-		int i, j;
-#ifdef _M_AMD64
-		uint32 *b = (uint32*)ep->ContextRecord->Rsp;
-#else
-		uint32 *b = (uint32*)ep->ContextRecord->Esp;
-#endif
-		for (j = 0; j != 24; j++) {
-			for (i = 0; i != 8; i++) {
-				if (IsBadReadPtr(b, sizeof(uint32))) {
-					output += seprintf(output, last, " ????????"); // OCR: WAS - , 0);
-				} else {
-					output += seprintf(output, last, " %.8X", *b);
-				}
-				b++;
-			}
-			output += seprintf(output, last, "\r\n");
-		}
-	}
-
-	output += seprintf(output, last, "\r\nModule information:\r\n");
-	output = PrintModuleList(output, last);
-
-	{
-		_OSVERSIONINFOA os;
-		os.dwOSVersionInfoSize = sizeof(os);
-		GetVersionExA(&os);
-		output += seprintf(output, last, "\r\nSystem information:\r\n"
-			" Windows version %d.%d %d %s\r\n\r\n",
-			os.dwMajorVersion, os.dwMinorVersion, os.dwBuildNumber, os.szCSDVersion);
-	}
-
-	_file_crash_log = CreateFile(_T("crash.log"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
-
-	if (_file_crash_log != INVALID_HANDLE_VALUE) {
-		DWORD num_written;
-		WriteFile(_file_crash_log, _crash_msg, output - _crash_msg, &num_written, NULL);
-	}
-
-#if !defined(_DEBUG)
-	HMODULE dbghelp = LoadLibrary(_T("dbghelp.dll"));
-	if (dbghelp != NULL) {
-		typedef BOOL (WINAPI *MiniDumpWriteDump_t)(HANDLE, DWORD, HANDLE,
-				MINIDUMP_TYPE,
-				CONST PMINIDUMP_EXCEPTION_INFORMATION,
-				CONST PMINIDUMP_USER_STREAM_INFORMATION,
-				CONST PMINIDUMP_CALLBACK_INFORMATION);
-		MiniDumpWriteDump_t funcMiniDumpWriteDump = (MiniDumpWriteDump_t)GetProcAddress(dbghelp, "MiniDumpWriteDump");
-		if (funcMiniDumpWriteDump != NULL) {
-			HANDLE file  = CreateFile(_T("crash.dmp"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
-			HANDLE proc  = GetCurrentProcess();
-			DWORD procid = GetCurrentProcessId();
-			MINIDUMP_EXCEPTION_INFORMATION mdei;
-			MINIDUMP_USER_STREAM userstream;
-			MINIDUMP_USER_STREAM_INFORMATION musi;
-			char msg[] = "****** Built on " __DATE__ " " __TIME__ ". ******";
-
-			userstream.Type        = LastReservedStream + 1;
-			userstream.Buffer      = msg;
-			userstream.BufferSize  = sizeof(msg);
-
-			musi.UserStreamCount   = 1;
-			musi.UserStreamArray   = &userstream;
-
-			mdei.ThreadId = GetCurrentThreadId();
-			mdei.ExceptionPointers  = ep;
-			mdei.ClientPointers     = false;
-
-			funcMiniDumpWriteDump(proc, procid, file, MiniDumpWithDataSegs, &mdei, &musi, NULL);
-		}
-		FreeLibrary(dbghelp);
-	}
-#endif
-
-	if (_file_crash_log != INVALID_HANDLE_VALUE) {
-		GamelogPrint(&GamelogPrintCrashLogProc);
-		CloseHandle(_file_crash_log);
-	}
-
-	/* Close any possible log files */
-	CloseConsoleLogIfActive();
-
-	if (_safe_esp) {
-#ifdef _M_AMD64
-		ep->ContextRecord->Rip = (DWORD64)Handler2;
-		ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
-#else
-		ep->ContextRecord->Eip = (DWORD)Handler2;
-		ep->ContextRecord->Esp = (DWORD)_safe_esp;
-#endif
-		return EXCEPTION_CONTINUE_EXECUTION;
-	}
-
-
-	return EXCEPTION_EXECUTE_HANDLER;
-}
-
-#ifdef _M_AMD64
-extern "C" void *_get_safe_esp();
-#endif
-
-static void Win32InitializeExceptions()
-{
-#ifdef _M_AMD64
-	_safe_esp = _get_safe_esp();
-#else
-	_asm {
-		mov _safe_esp, esp
-	}
-#endif
-
-	SetUnhandledExceptionFilter(ExceptionHandler);
-}
-#endif /* _MSC_VER */
-
 /* Code below for windows version of opendir/readdir/closedir copied and
  * modified from Jan Wassenberg's GPL implementation posted over at
  * http://www.gamedev.net/community/forums/topic.asp?topic_id=364584&whichpage=1&#2398903 */
@@ -874,6 +383,7 @@
 	argc = ParseCommandLine(cmdline, argv, lengthof(argv));
 
 #if defined(WIN32_EXCEPTION_TRACKER)
+	extern void Win32InitializeExceptions();
 	Win32InitializeExceptions();
 #endif