1041 lines
24 KiB
C++
Executable File
1041 lines
24 KiB
C++
Executable File
/*
|
|
* stack walk, improved assert and exception handler
|
|
* Copyright (c) 2002 Jan Wassenberg
|
|
*
|
|
* This program 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; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program 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.
|
|
*
|
|
* Contact info:
|
|
* Jan.Wassenberg@stud.uni-karlsruhe.de
|
|
* http://www.stud.uni-karlsruhe.de/~urkt/
|
|
*/
|
|
|
|
#include "precompiled.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#include "lib.h"
|
|
|
|
#include "win_internal.h"
|
|
#include <dbghelp.h>
|
|
|
|
#include "wdbg.h"
|
|
#include "assert_dlg.h"
|
|
|
|
|
|
#define LOCALISED_TEXT
|
|
|
|
#ifdef LOCALISED_TEXT
|
|
#include "ps/i18n.h"
|
|
#endif // LOCALISED_TEXT
|
|
|
|
|
|
|
|
|
|
void win_debug_break()
|
|
{
|
|
DebugBreak();
|
|
}
|
|
|
|
|
|
|
|
// need to shoehorn printf-style variable params into
|
|
// the OutputDebugString call.
|
|
// - don't want to split into multiple calls - would add newlines to output.
|
|
// - fixing Win32 _vsnprintf to return # characters that would be written,
|
|
// as required by C99, looks difficult and unnecessary. if any other code
|
|
// needs that, implement GNU vasprintf.
|
|
// - fixed size buffers aren't nice, but much simpler than vasprintf-style
|
|
// allocate+expand_until_it_fits. these calls are for quick debug output,
|
|
// not loads of data, anyway.
|
|
|
|
|
|
static const int MAX_CNT = 512;
|
|
// max output size of 1 call of (w)debug_out (including \0)
|
|
|
|
|
|
|
|
void debug_out(const char* fmt, ...)
|
|
{
|
|
char buf[MAX_CNT];
|
|
buf[MAX_CNT-1] = '\0';
|
|
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
vsnprintf(buf, MAX_CNT-1, fmt, ap);
|
|
va_end(ap);
|
|
|
|
OutputDebugString(buf);
|
|
}
|
|
|
|
|
|
void wdebug_out(const wchar_t* fmt, ...)
|
|
{
|
|
wchar_t buf[MAX_CNT];
|
|
buf[MAX_CNT-1] = L'\0';
|
|
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
vsnwprintf(buf, MAX_CNT-1, fmt, ap);
|
|
va_end(ap);
|
|
|
|
OutputDebugStringW(buf);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
* voodoo programming. PDB debug info is a poorly documented mess.
|
|
* see http://msdn.microsoft.com/msdnmag/issues/02/03/hood/default.aspx
|
|
*/
|
|
|
|
|
|
/* from DIA cvconst.h */
|
|
typedef enum
|
|
{
|
|
btNoType = 0,
|
|
btVoid = 1,
|
|
btChar = 2,
|
|
btWChar = 3,
|
|
btInt = 6,
|
|
btUInt = 7,
|
|
btFloat = 8,
|
|
btBCD = 9,
|
|
btBool = 10,
|
|
btLong = 13,
|
|
btULong = 14,
|
|
btCurrency = 25,
|
|
btDate = 26,
|
|
btVariant = 27,
|
|
btComplex = 28,
|
|
btBit = 29,
|
|
btBSTR = 30,
|
|
btHresult = 31
|
|
}
|
|
BasicType;
|
|
|
|
static void DumpMiniDump(HANDLE hFile, PEXCEPTION_POINTERS excpInfo);
|
|
|
|
// function pointers
|
|
//
|
|
// we need to link against dbghelp dynamically - some systems may not
|
|
// have v5.1. (if <= 5.0, type information is unavailable).
|
|
//
|
|
// don't delay-load: requires the .lib file, which may not be present
|
|
// on all compilers.
|
|
//
|
|
// can't skip the dbghelp.h function prototypes, so we need to
|
|
// name the function pointers differently (prepend _). Grr.
|
|
//
|
|
#define FUNC(ret, name, params) static ret (WINAPI *_##name) params;
|
|
#include "dbghelp_funcs.h"
|
|
#undef FUNC
|
|
|
|
|
|
static HANDLE hProcess;
|
|
static uintptr_t mod_base;
|
|
|
|
const int bufsize = 64000;
|
|
static wchar_t buf[bufsize]; /* buffer for stack trace */
|
|
static wchar_t* pos; /* current pos in buf */
|
|
|
|
|
|
static void out(wchar_t* fmt, ...)
|
|
{
|
|
// Don't overflow the buffer (and abort if we're about to)
|
|
if (pos-buf+1000 > bufsize)
|
|
throw;
|
|
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
pos += vswprintf(pos, 1000, fmt, args);
|
|
va_end(args);
|
|
}
|
|
|
|
|
|
static void dbg_cleanup(void)
|
|
{
|
|
_SymCleanup(hProcess);
|
|
}
|
|
|
|
static void dbg_init()
|
|
{
|
|
/* already initialized */
|
|
if(hProcess)
|
|
return;
|
|
|
|
HMODULE hdbghelp = LoadLibrary("dbghelp.dll");
|
|
|
|
// import functions
|
|
#define FUNC(ret, name, params) *(void**)&_##name = (void*)GetProcAddress(hdbghelp, #name);
|
|
#include "dbghelp_funcs.h"
|
|
#undef FUNC
|
|
|
|
hProcess = GetCurrentProcess();
|
|
|
|
_SymSetOptions(SYMOPT_DEFERRED_LOADS);
|
|
_SymInitialize(hProcess, 0, TRUE);
|
|
|
|
atexit(dbg_cleanup);
|
|
}
|
|
|
|
|
|
/*
|
|
* guess if addr points to a string
|
|
* algorithm:
|
|
* scan string; count # text chars vs. garbage
|
|
*/
|
|
static bool is_string_ptr(u64 addr)
|
|
{
|
|
/* early out for x86 */
|
|
#ifdef _WIN32
|
|
if(addr < 0x10000 || addr > 0x80000000)
|
|
return false;
|
|
#endif
|
|
|
|
const char* str = (const char*)addr;
|
|
|
|
__try
|
|
{
|
|
int score = 0;
|
|
for(;;)
|
|
{
|
|
const int c = *str++ & 0xff; /* signed char => promoted */
|
|
if(isalnum(c))
|
|
score += 1;
|
|
else if(!c)
|
|
return (score > 0); /* end of string reached */
|
|
else if(!isprint(c))
|
|
score -= 5;
|
|
|
|
/* give up */
|
|
if(score <= -10)
|
|
return false;
|
|
}
|
|
}
|
|
__except(1)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* output the value of 'basic' types: string, (array of) float, int
|
|
*
|
|
* not reliably supported, due to broken debug info / bad documentation:
|
|
* - multidimensional arrays (e.g. int[2][2] => len 16, elements 2)
|
|
* - arrays of character arrays (would have rely on is_string_ptr)
|
|
* - nested structures (invalid base type index)
|
|
*/
|
|
static void print_var(u32 type_idx, uint level, u64 addr)
|
|
{
|
|
// successful with index we were given?
|
|
BasicType type = btNoType;
|
|
u32 real_typeid = 0;
|
|
if(!_SymGetTypeInfo(hProcess, mod_base, type_idx, TI_GET_BASETYPE, &type))
|
|
{
|
|
// no; try to get the "real" index first
|
|
BOOL ok = _SymGetTypeInfo(hProcess, mod_base, type_idx, TI_GET_TYPEID, &real_typeid);
|
|
if(ok && real_typeid != type_idx)
|
|
_SymGetTypeInfo(hProcess, mod_base, real_typeid, TI_GET_BASETYPE, &type);
|
|
}
|
|
|
|
u64 len;
|
|
_SymGetTypeInfo(hProcess, mod_base, level? real_typeid : type_idx, TI_GET_LENGTH, &len);
|
|
|
|
u32 elements;
|
|
_SymGetTypeInfo(hProcess, mod_base, level? real_typeid : type_idx, TI_GET_COUNT, &elements);
|
|
|
|
wchar_t* fmt = L"%I64X"; /* default: 64 bit integer */
|
|
|
|
out(L"= ");
|
|
|
|
/*
|
|
* single string (character array)
|
|
* len == elements => bool array | character array (probably string)
|
|
*/
|
|
if(len == elements && is_string_ptr(addr))
|
|
{
|
|
out(L"\"%hs\"\r\n", (char*)addr);
|
|
return;
|
|
}
|
|
|
|
/* array */
|
|
if(elements)
|
|
{
|
|
len /= elements;
|
|
out(L"{ ");
|
|
}
|
|
|
|
u32 totalelements = elements;
|
|
|
|
next_element:
|
|
|
|
/* zero extend to 64 bit (little endian) */
|
|
u64 data = 0;
|
|
for(u64 i = 0; i < MIN(len,8); i++)
|
|
data |= (u64)(*(u8*)(addr+i)) << (i*8);
|
|
|
|
/* float / double */
|
|
if(type == btFloat)
|
|
{
|
|
/* convert floats to double (=> single printf call) */
|
|
if(len == 4)
|
|
{
|
|
double double_data = (double)(*(float*)addr);
|
|
data = *(u64*)&double_data;
|
|
}
|
|
fmt = L"%lf";
|
|
}
|
|
/* string (char*) */
|
|
else if(len == sizeof(void*) && is_string_ptr(data))
|
|
{
|
|
fmt = L"\"%hs\"";
|
|
}
|
|
|
|
out(fmt, data);
|
|
|
|
/* ascii char */
|
|
if(data < 0x100 && isprint((int)data))
|
|
out(L" ('%hc')", (char)data);
|
|
|
|
if(elements)
|
|
{
|
|
addr += len; /* add stride */
|
|
elements--;
|
|
|
|
/* don't display too many elements of huge arrays */
|
|
if (totalelements-elements > 32)
|
|
out(L" ... }");
|
|
|
|
else if(elements == 0)
|
|
out(L" }");
|
|
|
|
else
|
|
{
|
|
out(L", ");
|
|
goto next_element;
|
|
}
|
|
}
|
|
|
|
out(L"\r\n");
|
|
}
|
|
|
|
|
|
/* print sym name; if not a basic type, recurse for each child */
|
|
static void dump_sym(u32 type_idx, uint level, u64 addr)
|
|
{
|
|
/* print type name / member name */
|
|
WCHAR* type_name;
|
|
if(_SymGetTypeInfo(hProcess, mod_base, type_idx, TI_GET_SYMNAME, &type_name))
|
|
{
|
|
/* ignore things that look like member functions, because
|
|
there's no point in outputting them */
|
|
if (wcsstr(type_name, L"::"))
|
|
{
|
|
LocalFree(type_name);
|
|
return;
|
|
}
|
|
|
|
/* indent */
|
|
for(uint i = 0; i < level+2; i++)
|
|
out(L" ");
|
|
|
|
out(L"%ls ", type_name);
|
|
|
|
/* exclude some specific variable types, because
|
|
they just fill the stack trace with rubbish */
|
|
if (!wcscmp(type_name, L"JSType")
|
|
|| !wcscmp(type_name, L"JSVersion")
|
|
)
|
|
{
|
|
LocalFree(type_name);
|
|
out(L"\r\n");
|
|
return;
|
|
}
|
|
|
|
LocalFree(type_name);
|
|
}
|
|
|
|
u32 num_children = 0;
|
|
|
|
/* built-in type? yes - show its value, terminate recursion */
|
|
if (! _SymGetTypeInfo(hProcess, mod_base, type_idx, TI_GET_CHILDRENCOUNT, &num_children)
|
|
|| num_children == 0)
|
|
{
|
|
print_var(type_idx, level, addr);
|
|
return;
|
|
}
|
|
|
|
// bogus
|
|
if(num_children > 50)
|
|
return;
|
|
|
|
/* get children's type indices */
|
|
char child_buf[sizeof(TI_FINDCHILDREN_PARAMS) + 256*4];
|
|
TI_FINDCHILDREN_PARAMS* children = (TI_FINDCHILDREN_PARAMS*)child_buf;
|
|
children->Count = num_children;
|
|
children->Start = 0;
|
|
_SymGetTypeInfo(hProcess, mod_base, type_idx, TI_FINDCHILDREN, children);
|
|
|
|
out(L"\r\n");
|
|
|
|
/* recurse for each child */
|
|
for(uint child_idx = 0; child_idx < num_children; child_idx++)
|
|
{
|
|
u32 child_id = children->ChildId[child_idx];
|
|
|
|
u32 member_ofs;
|
|
_SymGetTypeInfo(hProcess, mod_base, child_id, TI_GET_OFFSET, &member_ofs);
|
|
|
|
dump_sym(child_id, level+1, addr+member_ofs);
|
|
}
|
|
}
|
|
|
|
|
|
static enum
|
|
{
|
|
NONE,
|
|
PARAMS,
|
|
LOCALS
|
|
}
|
|
var_type;
|
|
|
|
|
|
#define SYM_FLAG(flag) (sym->Flags & (IMAGEHLP_SYMBOL_INFO_##flag))
|
|
|
|
|
|
/* called for each local symbol */
|
|
static BOOL CALLBACK sym_callback(SYMBOL_INFO* sym, ULONG /* SymbolSize */, void* ctx)
|
|
{
|
|
STACKFRAME64* frame = (STACKFRAME64*)ctx;
|
|
|
|
mod_base = (uintptr_t)sym->ModBase;
|
|
|
|
__try
|
|
{
|
|
if(SYM_FLAG(PARAMETER))
|
|
{
|
|
if(var_type != PARAMS)
|
|
{
|
|
var_type = PARAMS;
|
|
out(L" params:\r\n");
|
|
}
|
|
}
|
|
else
|
|
if(var_type != LOCALS)
|
|
{
|
|
var_type = LOCALS;
|
|
out(L" locals:\r\n");
|
|
}
|
|
|
|
out(L" %hs ", sym->Name);
|
|
|
|
u64 addr = sym->Address; /* -> var's contents */
|
|
if(SYM_FLAG(REGRELATIVE))
|
|
addr += frame->AddrFrame.Offset;
|
|
else if(SYM_FLAG(REGISTER))
|
|
return 0;
|
|
|
|
dump_sym(sym->TypeIndex, 0, addr);
|
|
}
|
|
__except(1)
|
|
{
|
|
out(L"\r\nError reading symbol %hs!\r\n", sym->Name);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* most recent <skip> stack frames will be skipped
|
|
* (we don't want to show e.g. GetThreadContext / this call)
|
|
*/
|
|
static void walk_stack(int skip, wchar_t* out_buf, CONTEXT* override_context = NULL)
|
|
{
|
|
dbg_init();
|
|
|
|
bool type_avail = _SymFromAddr != 0;
|
|
|
|
pos = out_buf;
|
|
out(L"\r\nCall stack:\r\n\r\n");
|
|
|
|
if(!type_avail)
|
|
out(L"warning: older dbghelp.dll loaded; no type information available.\r\n");
|
|
|
|
HANDLE hThread = GetCurrentThread();
|
|
|
|
CONTEXT context;
|
|
if(override_context)
|
|
{
|
|
memcpy(&context, override_context, sizeof(CONTEXT));
|
|
}
|
|
else
|
|
{
|
|
memset(&context, 0, sizeof(context));
|
|
context.ContextFlags = CONTEXT_FULL;
|
|
GetThreadContext(hThread, &context);
|
|
}
|
|
|
|
STACKFRAME64 frame;
|
|
memset(&frame, 0, sizeof(frame));
|
|
|
|
#ifdef _M_IX86
|
|
/* x86 only: init STACKFRAME for first StackWalk call (undocumented) */
|
|
frame.AddrPC.Offset = context.Eip;
|
|
frame.AddrPC.Mode = AddrModeFlat;
|
|
frame.AddrStack.Offset = context.Esp;
|
|
frame.AddrStack.Mode = AddrModeFlat;
|
|
frame.AddrFrame.Offset = context.Ebp;
|
|
frame.AddrFrame.Mode = AddrModeFlat;
|
|
#endif
|
|
|
|
u64 base = _SymGetModuleBase64(hProcess, (u64)&walk_stack);
|
|
IMAGE_NT_HEADERS* header = _ImageNtHeader((void*)base);
|
|
u32 machine = header->FileHeader.Machine;
|
|
|
|
char sym_buf[sizeof(SYMBOL_INFO) + 1024];
|
|
memset(sym_buf, 0, sizeof(sym_buf));
|
|
SYMBOL_INFO* sym = (SYMBOL_INFO*)sym_buf;
|
|
sym->SizeOfStruct = sizeof(SYMBOL_INFO);
|
|
sym->MaxNameLen = 1024;
|
|
|
|
IMAGEHLP_LINE64 line = { sizeof(IMAGEHLP_LINE64) };
|
|
IMAGEHLP_STACK_FRAME imghlp_frame;
|
|
|
|
for(;;)
|
|
{
|
|
if(!_StackWalk64(machine, hProcess, hThread, &frame, &context, 0, _SymFunctionTableAccess64, _SymGetModuleBase64, 0))
|
|
break;
|
|
|
|
if(skip-- > 0)
|
|
continue;
|
|
|
|
u64 pc = frame.AddrPC.Offset;
|
|
|
|
if(!type_avail)
|
|
{
|
|
out(L"%I64X\r\n", pc);
|
|
continue;
|
|
}
|
|
|
|
/* function name / address */
|
|
u64 sym_disp;
|
|
if(type_avail && _SymFromAddr(hProcess, pc, &sym_disp, sym))
|
|
out(L"%hs", sym->Name);
|
|
else
|
|
out(L"%I64X", pc);
|
|
|
|
/* source file + line number */
|
|
DWORD line_disp;
|
|
if(_SymGetLineFromAddr64(hProcess, pc, &line_disp, &line))
|
|
out(L" (%hs, line %lu)", line.FileName, line.LineNumber);
|
|
|
|
out(L"\r\n");
|
|
|
|
/* params + vars */
|
|
var_type = NONE;
|
|
|
|
imghlp_frame.InstructionOffset = pc;
|
|
_SymSetContext(hProcess, &imghlp_frame, 0);
|
|
_SymEnumSymbols(hProcess, 0, 0, sym_callback, &frame);
|
|
|
|
out(L"\r\n");
|
|
}
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
|
|
#include "resource.h"
|
|
|
|
|
|
typedef enum
|
|
{
|
|
ASSERT,
|
|
EXCEPTION
|
|
}
|
|
DLG_TYPE;
|
|
|
|
|
|
static int CALLBACK dlgproc(HWND hDlg, unsigned int msg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
switch(msg)
|
|
{
|
|
case WM_INITDIALOG:
|
|
{
|
|
DLG_TYPE type = (DLG_TYPE)lParam;
|
|
|
|
/* disable inappropriate buttons */
|
|
if(type != ASSERT)
|
|
{
|
|
HWND h;
|
|
h = GetDlgItem(hDlg, IDC_CONTINUE);
|
|
EnableWindow(h, 0);
|
|
h = GetDlgItem(hDlg, IDC_SUPPRESS);
|
|
EnableWindow(h, 0);
|
|
h = GetDlgItem(hDlg, IDC_BREAK);
|
|
EnableWindow(h, 0);
|
|
}
|
|
|
|
SetDlgItemTextW(hDlg, IDC_EDIT1, buf);
|
|
return 1; /* allow focus to be set */
|
|
}
|
|
|
|
case WM_SYSCOMMAND:
|
|
if(wParam == SC_CLOSE)
|
|
EndDialog(hDlg, 0);
|
|
return 0; /* allows dragging; don't understand why. */
|
|
|
|
case WM_COMMAND:
|
|
switch(wParam)
|
|
{
|
|
case IDC_COPY:
|
|
clipboard_set(buf);
|
|
break;
|
|
|
|
case IDC_CONTINUE: /* 2000 */
|
|
case IDC_SUPPRESS:
|
|
case IDC_BREAK: /* 2002 */
|
|
EndDialog(hDlg, wParam-2000);
|
|
break;
|
|
|
|
case IDC_EXIT:
|
|
exit(0);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
return 0; /* do default processing for msg */
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* show error dialog, with stack trace (must be stored in buf[])
|
|
* exits directly if 'exit' is clicked.
|
|
*
|
|
* return values:
|
|
* 0 - continue
|
|
* 1 - suppress
|
|
* 2 - break
|
|
*/
|
|
static int dialog(DLG_TYPE type)
|
|
{
|
|
return (int)DialogBoxParam(0, MAKEINTRESOURCE(IDD_DIALOG1), 0, dlgproc, (LPARAM)type);
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
|
|
static PTOP_LEVEL_EXCEPTION_FILTER prev_except_filter;
|
|
|
|
static long CALLBACK except_filter(EXCEPTION_POINTERS* except)
|
|
{
|
|
PEXCEPTION_RECORD except_record = except->ExceptionRecord;
|
|
uintptr_t addr = (uintptr_t)except_record->ExceptionAddress;
|
|
|
|
DWORD code = except_record->ExceptionCode;
|
|
char* except_str = "(unknown)";
|
|
#define X(e) case EXCEPTION_##e: except_str = #e; break;
|
|
switch(code)
|
|
{
|
|
X(ACCESS_VIOLATION)
|
|
X(DATATYPE_MISALIGNMENT)
|
|
X(BREAKPOINT)
|
|
X(SINGLE_STEP)
|
|
X(ARRAY_BOUNDS_EXCEEDED)
|
|
X(FLT_DENORMAL_OPERAND)
|
|
X(FLT_DIVIDE_BY_ZERO)
|
|
X(FLT_INEXACT_RESULT)
|
|
X(FLT_INVALID_OPERATION)
|
|
X(FLT_OVERFLOW)
|
|
X(FLT_STACK_CHECK)
|
|
X(FLT_UNDERFLOW)
|
|
X(INT_DIVIDE_BY_ZERO)
|
|
X(INT_OVERFLOW)
|
|
X(PRIV_INSTRUCTION)
|
|
X(IN_PAGE_ERROR)
|
|
X(ILLEGAL_INSTRUCTION)
|
|
X(NONCONTINUABLE_EXCEPTION)
|
|
X(STACK_OVERFLOW)
|
|
X(INVALID_DISPOSITION)
|
|
X(GUARD_PAGE)
|
|
X(INVALID_HANDLE)
|
|
}
|
|
#undef X
|
|
|
|
MEMORY_BASIC_INFORMATION mbi;
|
|
char module_buf[100];
|
|
char* module = "???";
|
|
uintptr_t base = 0;
|
|
|
|
if(VirtualQuery((void*)addr, &mbi, sizeof(mbi)))
|
|
{
|
|
base = (uintptr_t)mbi.AllocationBase;
|
|
if(GetModuleFileName((HMODULE)base, module_buf, sizeof(module_buf)))
|
|
module = strrchr(module_buf, '\\')+1;
|
|
// GetModuleFileName returns fully qualified path =>
|
|
// trailing '\\' exists
|
|
}
|
|
|
|
|
|
int pos = swprintf(buf, 1000, L"Exception %hs at %hs!%08lX\r\n", except_str, module, addr-base);
|
|
walk_stack(0, buf+pos, except->ContextRecord);
|
|
|
|
dialog(EXCEPTION);
|
|
|
|
if(prev_except_filter)
|
|
return prev_except_filter(except);
|
|
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
|
|
|
|
static void set_exception_handler()
|
|
{
|
|
prev_except_filter = SetUnhandledExceptionFilter(except_filter);
|
|
}
|
|
|
|
|
|
|
|
#ifdef LOCALISED_TEXT
|
|
|
|
// Split this into a separate function because destructors and __try don't mix
|
|
void i18n_display_fatal_msg(const wchar_t* errortext) {
|
|
CStrW title = translate(L"Prometheus Failure");
|
|
CStrW message = translate(L"A fatal error has occurred: $msg. Please report this to http://bugs.wildfiregames.com/ and attach the crashlog.txt and crashlog.dmp files from your 'data' folder.") << I18n::Raw(errortext);
|
|
wdisplay_msg(title.c_str(), message.c_str());
|
|
}
|
|
|
|
#endif // LOCALISED_TEXT
|
|
|
|
// PT: Alternate version of the exception handler, which makes
|
|
// the crash log more useful, and takes the responsibility of
|
|
// suiciding away from main.cpp.
|
|
|
|
void abort_timer(); // from wtime.cpp
|
|
|
|
int debug_main_exception_filter(unsigned int UNUSEDPARAM(code), PEXCEPTION_POINTERS ep)
|
|
{
|
|
// If something crashes after we've already crashed (i.e. when shutting
|
|
// down everything), don't bother logging it, because the first crash
|
|
// is the most important one to fix.
|
|
static bool already_crashed = false;
|
|
if (already_crashed)
|
|
{
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
}
|
|
already_crashed = true;
|
|
|
|
// The timer thread sometimes dies from EXCEPTION_PRIV_INSTRUCTION
|
|
// when debugging this exception handler code (which gets quite
|
|
// annoying), so kill it before it gets a chance.
|
|
__try
|
|
{
|
|
abort_timer();
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
}
|
|
|
|
const wchar_t* error = NULL;
|
|
|
|
// C++ exceptions put a pointer to the exception object
|
|
// into ExceptionInformation[1] -- so see if it looks like
|
|
// a PSERROR*, and use the relevant message if it is.
|
|
__try
|
|
{
|
|
if (ep->ExceptionRecord->NumberParameters == 3)
|
|
{
|
|
PSERROR* err = (PSERROR*) ep->ExceptionRecord->ExceptionInformation[1];
|
|
if (err->magic == 0x45725221)
|
|
{
|
|
int code = err->code;
|
|
error = GetErrorString(code);
|
|
}
|
|
}
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
// Presumably it wasn't a PSERROR and resulted in
|
|
// accessing invalid memory locations.
|
|
error = NULL;
|
|
}
|
|
|
|
// Try getting nice names for other types of error:
|
|
if (! error)
|
|
{
|
|
switch (ep->ExceptionRecord->ExceptionCode)
|
|
{
|
|
case EXCEPTION_ACCESS_VIOLATION: error = L"Access violation"; break;
|
|
case EXCEPTION_DATATYPE_MISALIGNMENT: error = L"Datatype misalignment"; break;
|
|
case EXCEPTION_BREAKPOINT: error = L"Breakpoint"; break;
|
|
case EXCEPTION_SINGLE_STEP: error = L"Single step"; break;
|
|
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: error = L"Array bounds exceeded"; break;
|
|
case EXCEPTION_FLT_DENORMAL_OPERAND: error = L"Float denormal operand"; break;
|
|
case EXCEPTION_FLT_DIVIDE_BY_ZERO: error = L"Float divide by zero"; break;
|
|
case EXCEPTION_FLT_INEXACT_RESULT: error = L"Float inexact result"; break;
|
|
case EXCEPTION_FLT_INVALID_OPERATION: error = L"Float invalid operation"; break;
|
|
case EXCEPTION_FLT_OVERFLOW: error = L"Float overflow"; break;
|
|
case EXCEPTION_FLT_STACK_CHECK: error = L"Float stack check"; break;
|
|
case EXCEPTION_FLT_UNDERFLOW: error = L"Float underflow"; break;
|
|
case EXCEPTION_INT_DIVIDE_BY_ZERO: error = L"Integer divide by zero"; break;
|
|
case EXCEPTION_INT_OVERFLOW: error = L"Integer overflow"; break;
|
|
case EXCEPTION_PRIV_INSTRUCTION: error = L"Privileged instruction"; break;
|
|
case EXCEPTION_IN_PAGE_ERROR: error = L"In page error"; break;
|
|
case EXCEPTION_ILLEGAL_INSTRUCTION: error = L"Illegal instruction"; break;
|
|
case EXCEPTION_NONCONTINUABLE_EXCEPTION:error = L"Noncontinuable exception"; break;
|
|
case EXCEPTION_STACK_OVERFLOW: error = L"Stack overflow"; break;
|
|
case EXCEPTION_INVALID_DISPOSITION: error = L"Invalid disposition"; break;
|
|
case EXCEPTION_GUARD_PAGE: error = L"Guard page"; break;
|
|
case EXCEPTION_INVALID_HANDLE: error = L"Invalid handle"; break;
|
|
default: error = L"[unknown exception]";
|
|
}
|
|
}
|
|
|
|
wchar_t* errortext = (wchar_t*) error;
|
|
|
|
// Handle access violations specially, because we can see
|
|
// whether and where they were reading/writing.
|
|
if (ep->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
|
|
{
|
|
errortext = new wchar_t[256];
|
|
if (ep->ExceptionRecord->ExceptionInformation[0])
|
|
swprintf(errortext, 256, L"Access violation writing 0x%08X", ep->ExceptionRecord->ExceptionInformation[1]);
|
|
else
|
|
swprintf(errortext, 256, L"Access violation reading 0x%08X", ep->ExceptionRecord->ExceptionInformation[1]);
|
|
}
|
|
|
|
bool localised_successfully = false;
|
|
#ifdef LOCALISED_TEXT
|
|
|
|
// In case this is called before/after the i18n system is
|
|
// alive, make sure it's actually a valid pointer
|
|
if (g_CurrentLocale)
|
|
{
|
|
__try
|
|
{
|
|
i18n_display_fatal_msg(errortext);
|
|
localised_successfully = true;
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
}
|
|
}
|
|
#endif // LOCALISED_TEXT
|
|
if (!localised_successfully)
|
|
{
|
|
wchar_t message[1024];
|
|
swprintf(message, 1024, L"A fatal error has occurred: %ls.\nPlease report this to http://bugs.wildfiregames.com/ and attach the crashlog.txt and crashlog.dmp files from your 'data' folder.", errortext);
|
|
message[1023] = 0;
|
|
|
|
wdisplay_msg(L"Prometheus failure", message);
|
|
}
|
|
|
|
|
|
__try
|
|
{
|
|
debug_write_crashlog("crashlog.txt", errortext, ep->ContextRecord);
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
wdisplay_msg(L"Prometheus failure", L"Error generating crash log.");
|
|
}
|
|
|
|
__try
|
|
{
|
|
HANDLE hFile = CreateFile("crashlog.dmp", GENERIC_WRITE, FILE_SHARE_WRITE, 0, CREATE_ALWAYS, 0, 0);
|
|
if (hFile == INVALID_HANDLE_VALUE) throw;
|
|
DumpMiniDump(hFile, ep);
|
|
CloseHandle(hFile);
|
|
}
|
|
__except (EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
wdisplay_msg(L"Prometheus failure", L"Error generating crash dump.");
|
|
}
|
|
|
|
// Disable memory-leak reporting, because it's going to
|
|
// leak like a bucket with a missing bottom when it crashes.
|
|
#ifdef HAVE_DEBUGALLOC
|
|
uint flags = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
|
|
_CrtSetDbgFlag(flags & ~_CRTDBG_LEAK_CHECK_DF);
|
|
#endif
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
|
|
|
|
static void init()
|
|
{
|
|
ONCE(dbg_init());
|
|
}
|
|
|
|
|
|
int debug_assert_failed(const char* file, int line, const char* expr)
|
|
{
|
|
init();
|
|
|
|
int pos = swprintf(buf, 1000, L"Assertion failed in %hs, line %d: %hs\r\n", file, line, expr);
|
|
walk_stack(2, buf+pos);
|
|
|
|
return dialog(ASSERT);
|
|
}
|
|
|
|
|
|
// main.cpp will have an exception handler, but this covers low-level init
|
|
// (before main is called)
|
|
static int wdbg_init()
|
|
{
|
|
set_exception_handler();
|
|
return 0;
|
|
}
|
|
|
|
|
|
#pragma data_seg(".LIB$WIB") // first
|
|
WIN_REGISTER_FUNC(wdbg_init);
|
|
#pragma data_seg()
|
|
|
|
|
|
// from http://www.codeproject.com/debug/XCrashReportPt3.asp
|
|
static void DumpMiniDump(HANDLE hFile, PEXCEPTION_POINTERS excpInfo)
|
|
{
|
|
/*
|
|
if (excpInfo == NULL)
|
|
{
|
|
// Generate exception to get proper context in dump
|
|
__try
|
|
{
|
|
OutputDebugString("RaiseException for MinidumpWriteDump\n");
|
|
RaiseException(EXCEPTION_BREAKPOINT, 0, 0, NULL);
|
|
}
|
|
__except(DumpMiniDump(hFile, GetExceptionInformation()), EXCEPTION_CONTINUE_EXECUTION)
|
|
{
|
|
}
|
|
}
|
|
else
|
|
{*/
|
|
MINIDUMP_EXCEPTION_INFORMATION eInfo;
|
|
eInfo.ThreadId = GetCurrentThreadId();
|
|
eInfo.ExceptionPointers = excpInfo;
|
|
eInfo.ClientPointers = FALSE;
|
|
|
|
// TODO: Store the crashlog.txt inside the UserStreamParam
|
|
// so that people only have to send us one file?
|
|
|
|
// note: MiniDumpWithIndirectlyReferencedMemory does not work on Win98
|
|
if (!_MiniDumpWriteDump(
|
|
GetCurrentProcess(),
|
|
GetCurrentProcessId(),
|
|
hFile,
|
|
MiniDumpNormal,
|
|
excpInfo ? &eInfo : NULL,
|
|
NULL,
|
|
NULL))
|
|
{
|
|
throw; // fail noisily
|
|
}
|
|
// }
|
|
}
|
|
|
|
static void cat_atow(FILE* in, FILE* out)
|
|
{
|
|
const int bufsize = 1024;
|
|
char buffer[bufsize+1]; // bufsize+1 so there's space for a \0 at the end
|
|
while (!feof(in))
|
|
{
|
|
int r = (int)fread(buffer, 1, bufsize, in);
|
|
if (!r) break;
|
|
buffer[r] = 0; // ensure proper NULLness
|
|
fwprintf(out, L"%hs", &buffer);
|
|
}
|
|
}
|
|
|
|
// Imported from sysdep.cpp
|
|
extern wchar_t MicroBuffer[];
|
|
extern int MicroBuffer_off;
|
|
|
|
int debug_write_crashlog(const char* file, wchar_t* header, void* context)
|
|
{
|
|
init();
|
|
|
|
int len = swprintf(buf, 1000, L"Undefined state reached.\r\n");
|
|
|
|
__try
|
|
{
|
|
if (context)
|
|
walk_stack(0, buf+len, (CONTEXT*)context);
|
|
else
|
|
walk_stack(2, buf+len);
|
|
}
|
|
__except(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
// Probably caught a buffer overflow
|
|
}
|
|
|
|
FILE* f = fopen(file, "wb");
|
|
int BOM = 0xFEFF;
|
|
fwrite(&BOM, 2, 1, f);
|
|
if (header)
|
|
{
|
|
fwrite(header, wcslen(header), sizeof(wchar_t), f);
|
|
fwrite(L"\r\n\r\n", 4, sizeof(wchar_t), f);
|
|
}
|
|
fwrite(buf, pos-buf, 2, f);
|
|
|
|
const wchar_t* divider = L"\r\n\r\n====================================\r\n\r\n";
|
|
|
|
fwrite(divider, wcslen(divider), sizeof(wchar_t), f);
|
|
|
|
// HACK: Insert the contents from a couple of other log files
|
|
// and one memory log. These really ought to be integrated better.
|
|
|
|
// Copy the contents of ../logs/systeminfo.txt
|
|
FILE* in;
|
|
in = fopen("../logs/system_info.txt", "rb");
|
|
if (in)
|
|
{
|
|
fwprintf(f, L"System info:\r\n\r\n");
|
|
cat_atow(in, f);
|
|
fclose(in);
|
|
}
|
|
|
|
fwrite(divider, wcslen(divider), sizeof(wchar_t), f);
|
|
|
|
// Copy the contents of ../logs/mainlog.html
|
|
in = fopen("../logs/mainlog.html", "rb");
|
|
if (in)
|
|
{
|
|
fwprintf(f, L"Main log:\r\n\r\n");
|
|
cat_atow(in, f);
|
|
fclose(in);
|
|
}
|
|
|
|
fwrite(divider, wcslen(divider), sizeof(wchar_t), f);
|
|
|
|
fwprintf(f, L"Last known activity:\r\n\r\n");
|
|
fwrite(MicroBuffer, MicroBuffer_off, sizeof(wchar_t), f);
|
|
fclose(f);
|
|
|
|
return 0;
|
|
} |