opdis.c

来自「Fenris是一个检测并把高层次的语言结构做成文档的多功能故障检测器、调试器、代」· C语言 代码 · 共 60 行

/*
   fenris - program execution path analysis tool
   ---------------------------------------------

   Copyright (C) 2001, 2002 by Bindview Corporation
   Portions copyright (C) 2001, 2002 by their respective contributors
   Developed and maintained by Michal Zalewski <[e-mail]>

   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.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

   This code is taken from cxmon utility, http://www.uni-mainz.de/~bauec002/,
   written by Christian Bauer and Marc Hellwig. Most of their code was
   taken from GNU binutils libopcode for i386, which is probably
   authored mostly by Pace Willisson. I made several changes, changed
   the notation a bit and removed some code, but I'm not the one to take
   credit for the functionality of this code (or lack of thereof ;-).

*/

#include <stdarg.h>
#include <stdio.h>
#include "nasm/disasm.h"
#include "nasm/insns.h" // for pref cpu

extern char* describe_address(unsigned int addr);

int disass_x86(FILE *f, unsigned int adr) {
  char outbuf[256];
  long lendis;
  char* x;
  
  lendis = disasm((unsigned char*) adr, outbuf, 32, adr, 0 /*FALSE*/, IF_PENT);
  
  fprintf(f,"%08x",adr);
  x=describe_address(adr);
  if (strlen(x)) fprintf(f," [%s]",x);
  fprintf(f, ": \t%s\n", outbuf);
  
  return lendis;
}

void disass (const char* buf,unsigned int addr,unsigned int len) {
  int add=addr;

  while (add <= addr+len) 
   add+=disass_x86(stderr,add);
}