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Update ebacktrace to avoid crashes and improve the quality of the diagnostic output.

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git-svn-id: https://svn.eduke32.com/eduke32@4503 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
hendricks266 2014-06-13 09:03:06 +00:00
parent a03f9bce40
commit e647b6a42f
3 changed files with 94 additions and 32 deletions
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polymer/eduke32/package/debug/win32/ebacktrace1.dll
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polymer/eduke32/package/debug/win64/ebacktrace1-64.dll
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126
polymer/eduke32/platform/Windows/src/backtrace.c
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@ -43,6 +43,10 @@
# define PACKAGE_VERSION 1
#endif
#if defined(_M_X64) || defined(__amd64__) || defined(__x86_64__) || defined(_WIN64)
# define EBACKTRACE64
#endif
#include <bfd.h>
#include <psapi.h>
#include <stdlib.h>
@ -58,6 +62,9 @@
#include <stdint.h>
#ifndef MS_VC_EXCEPTION
# define MS_VC_EXCEPTION 1080890248
#endif
#if defined __GNUC__ || defined __clang__
# define ATTRIBUTE(attrlist) __attribute__(attrlist)
@ -180,7 +187,8 @@ init_bfd_ctx(struct bfd_ctx *bc, const char * procname, struct output_buffer *ob
if (!(r1 && r2 && r3)) {
bfd_close(b);
output_print(ob,"Failed to init bfd from (%s): %d %d %d\n", procname, r1,r2,r3);
if (!(r1 && r2))
output_print(ob,"Failed to init bfd from (%s): %d %d %d\n", procname, r1, r2, r3);
return 1;
}
@ -238,16 +246,17 @@ release_set(struct bfd_set *set)
{
while(set) {
struct bfd_set * temp = set->next;
free(set->name);
if (set->name)
free(set->name);
close_bfd_ctx(set->bc);
free(set);
free(set);
set = temp;
}
}
static char procname[MAX_PATH];
#if defined(_M_X64) || defined(__amd64__) || defined(__x86_64__)
#ifdef EBACKTRACE64
# define MachineType IMAGE_FILE_MACHINE_AMD64
# define MAYBE64(x) x ## 64
#else
@ -268,7 +277,7 @@ _backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT
memset(&frame,0,sizeof(frame));
#if defined(_M_X64) || defined(__amd64__) || defined(__x86_64__)
#ifdef EBACKTRACE64
frame.AddrPC.Offset = context->Rip;
frame.AddrStack.Offset = context->Rsp;
frame.AddrFrame.Offset = context->Rbp;
@ -330,23 +339,34 @@ _backtrace(struct output_buffer *ob, struct bfd_set *set, int depth , LPCONTEXT
file = "[unknown file]";
}
}
if (func == NULL) {
output_print(ob,"0x%x : %s : %s \n",
frame.AddrPC.Offset,
module_name,
file);
}
else {
output_print(ob,"0x%x : %s : %s (%d) : in function (%s) \n",
frame.AddrPC.Offset,
module_name,
file,
line,
func);
}
output_print(ob,"0x%p : %s : %s", frame.AddrPC.Offset, module_name, file);
if (func != NULL)
output_print(ob, " (%d) : in function (%s)", line, func);
output_print(ob, "\n");
}
}
static LPTSTR FormatErrorMessage(DWORD dwMessageId)
{
LPTSTR lpBuffer = NULL;
// from http://stackoverflow.com/a/455533
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM
|FORMAT_MESSAGE_ALLOCATE_BUFFER
|FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dwMessageId,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US)
(LPTSTR)&lpBuffer,
0,
NULL);
return lpBuffer; // must be LocalFree()'d by caller
}
static char * g_output = NULL;
static PVOID g_prev = NULL;
@ -355,19 +375,61 @@ exception_filter(LPEXCEPTION_POINTERS info)
{
struct output_buffer ob;
int logfd, written;
output_init(&ob, g_output, BUFFER_MAX);
PEXCEPTION_RECORD exception;
BOOL initialized = FALSE;
if (!SymInitialize(GetCurrentProcess(), 0, TRUE)) {
output_print(&ob,"Failed to init symbol context\n");
}
else {
struct bfd_set *set = calloc(1,sizeof(*set));
bfd_init();
_backtrace(&ob , set , 128 , info->ContextRecord);
release_set(set);
for (exception = info->ExceptionRecord; exception != NULL; exception = exception->ExceptionRecord)
{
#if 0
if (exception->ExceptionFlags & EXCEPTION_NONCONTINUABLE)
continuable = FALSE;
#endif
SymCleanup(GetCurrentProcess());
}
switch (exception->ExceptionCode)
{
case EXCEPTION_BREAKPOINT:
case EXCEPTION_SINGLE_STEP:
case DBG_CONTROL_C:
case MS_VC_EXCEPTION:
break;
default:
if (!initialized)
{
output_init(&ob, g_output, BUFFER_MAX);
initialized = TRUE;
}
output_print(&ob, "Caught exception 0x%08X at 0x%p\n", exception->ExceptionCode, exception->ExceptionAddress);
break;
}
}
if (!initialized)
return EXCEPTION_CONTINUE_SEARCH; // EXCEPTION_CONTINUE_EXECUTION
{
DWORD error = 0;
BOOL SymInitialized = SymInitialize(GetCurrentProcess(), NULL, TRUE);
if (!SymInitialized)
{
LPTSTR errorText;
error = GetLastError();
errorText = FormatErrorMessage(error);
output_print(&ob, "SymInitialize() failed with error %d: %s\n", error, errorText);
LocalFree(errorText);
}
if (SymInitialized || error == 87)
{
struct bfd_set *set = calloc(1,sizeof(*set));
bfd_init();
_backtrace(&ob , set , 128 , info->ContextRecord);
release_set(set);
SymCleanup(GetCurrentProcess());
}
}
logfd = open(CRASH_LOG_FILE, O_APPEND | O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
@ -393,9 +455,9 @@ exception_filter(LPEXCEPTION_POINTERS info)
//fputs(g_output, stderr);
exit(1);
exit(0xBAC);
return 0;
return EXCEPTION_CONTINUE_SEARCH;
}
static void