snes9x/win32/objfix.c

130 lines
2.6 KiB
C
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2010-09-25 15:46:12 +00:00
/*
Copyright (c) 1998-2005 Charles Bilyue'.
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.
*/
#include <stdio.h>
#include <string.h>
int open_error(const char *filename, const char *mode)
{
printf("Failure opening %s for %s\n",filename,mode);
return 1;
}
int main(int argc, char **argv)
{
int c;
int section_count;
FILE *in, *out;
unsigned char section_header[40];
if (argc < 2 || argc > 3)
{
printf("Fixes MS Win32 object files to be compatible with the incorrect\n");
printf(" implementation in MinGW32.\n");
printf("Usage: objfix infile [outfile]\n");
return 1;
}
in = fopen(argv[1], (argc == 2 ? "rb+" : "rb"));
if (!in) return open_error(argv[1], (argc == 2 ? "read" : "update"));
if (argc == 3)
{
out = fopen(argv[2], "wb");
if (!out) return open_error(argv[1], (argc == 2 ? "read" : "update"));
}
else
{
out = NULL;
}
if (out)
{
fputc(fgetc(in), out);
fputc(fgetc(in), out);
fputc(section_count = fgetc(in), out);
fputc(c = fgetc(in), out);
section_count += c << 8;
for (c = 4; c < 0x14; c++)
{
fputc(fgetc(in), out);
}
for (c = 0; c < section_count; c++)
{
fread(section_header, 1, 40, in);
if (!strncmp(section_header, ".bss", 8))
{
memcpy(section_header + 8, section_header + 16, 4);
memset(section_header + 16, 0, 4);
}
else
{
memset(section_header + 8, 0, 4);
}
fwrite(section_header, 1, 40, out);
}
while ((c = fgetc(in)) != EOF)
{
fputc(c, out);
}
}
else
{
fgetc(in);
fgetc(in);
section_count = fgetc(in);
section_count += fgetc(in) << 8;
fseek(in, 0x14, SEEK_SET);
for (c = 0; c < section_count; c++)
{
fread(section_header, 1, 40, in);
fseek(in, -40, SEEK_CUR);
if (!strncmp(section_header, ".bss", 8))
{
memcpy(section_header + 8, section_header + 16, 4);
memset(section_header + 16, 0, 4);
}
else
{
memset(section_header + 8, 0, 4);
}
fwrite(section_header, 1, 40, in);
fseek(in, 0, SEEK_CUR);
}
}
fclose(in);
if (out) fclose(out);
return 0;
}