mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-02 18:08:58 +00:00
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#include <stdio.h>
|
|
#include "Fundamentals.h"
|
|
#include <windows.h>
|
|
|
|
unsigned char old_instruction;
|
|
|
|
extern "C" int
|
|
SetBreakPoint(void *pc)
|
|
{
|
|
old_instruction = (*((unsigned char *) pc));
|
|
*((unsigned char *) pc) = 0xcc; /* break point opcode */
|
|
fprintf(stderr, "breakpoint at: %x\n", pc);
|
|
fprintf(stderr, "value: %x\n", &old_instruction);
|
|
/* Need to flush icache here */
|
|
return 0;
|
|
}
|
|
|
|
__declspec(dllexport) EXCEPTION_DISPOSITION __cdecl
|
|
_arun_handler(struct _EXCEPTION_RECORD
|
|
*ExceptionRecord,
|
|
void * EstablisherFrame,
|
|
struct _CONTEXT *ContextRecord,
|
|
void * DispatcherContext )
|
|
|
|
{
|
|
// Indicate that we made it to our exception handler
|
|
fprintf(stderr, "Faulted with: 0x%x\n",ExceptionRecord->ExceptionCode);
|
|
// Change EIP in the context record so that it points to someplace
|
|
// where we can successfully continue
|
|
switch (ExceptionRecord->ExceptionCode) {
|
|
case STATUS_BREAKPOINT:
|
|
fprintf(stderr, "Restoring the instruction at %x\n",
|
|
ContextRecord->Eip);
|
|
(*(unsigned char *) (ContextRecord->Eip)) = old_instruction;
|
|
fprintf(stderr, "Restored: %x\n", old_instruction);
|
|
// Reexecute the same instruction
|
|
return ExceptionContinueExecution;
|
|
default:
|
|
return ExceptionContinueSearch;
|
|
}
|
|
}
|