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exe2coff.c
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C/C++ Source or Header
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1993-07-24
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/* This is file EXE2AOUT.C */
/*
** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
**
** This file is distributed under the terms listed in the document
** "copying.dj", available from DJ Delorie at the address above.
** A copy of "copying.dj" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.dj".
**
** This file is distributed WITHOUT ANY WARRANTY; without even the implied
** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <string.h>
#include <io.h>
void exe2aout(char *fname)
{
unsigned short header[3];
int ifile;
int ofile;
char buf[4096];
int rbytes;
ifile = open(fname, O_RDONLY|O_BINARY);
if (ifile < 0)
{
perror(fname);
return;
}
read(ifile, header, sizeof(header));
if (header[0] == 0x5a4d)
{
long header_offset = (long)header[2]*512L;
if (header[1])
header_offset += (long)header[1] - 512L;
lseek(ifile, header_offset, 0);
header[0] = 0;
read(ifile, header, sizeof(header));
if ((header[0] != 0x010b) && (header[0] != 0x014c))
{
fprintf(stderr, "%s does not have an a.out file appended to it\n", fname);
exit(1);
}
lseek(ifile, header_offset, 0);
}
else
{
fprintf(stderr, "%s is not an .EXE file\n", fname);
exit(1);
}
*strrchr(fname, '.') = 0;
ofile = open(fname, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0666);
if (ofile < 0)
{
perror(fname);
return;
}
while ((rbytes=read(ifile, buf, 4096)) > 0)
{
int wb = write(ofile, buf, rbytes);
if (wb < 0)
{
perror(fname);
break;
}
if (wb < rbytes)
{
fprintf(stderr, "%s: disk full\n", fname);
exit(1);
}
}
close(ifile);
close(ofile);
}
int main(int argc, char **argv)
{
int i;
for (i=1; i<argc; i++)
exe2aout(argv[i]);
return 0;
}