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gen-aout.c
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1994-02-03
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92 lines
/* Generate parameters for an a.out system.
Copyright (C) 1990-1991 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
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 "/usr/include/a.out.h"
#include <stdio.h>
int
main (argc, argv)
int argc; char** argv;
{
struct exec my_exec;
int page_size;
char *target;
FILE *file = fopen("gen-aout", "r");
if (file == NULL) {
fprintf(stderr, "Cannot open gen-aout!\n");
return -1;
}
if (fread(&my_exec, sizeof(struct exec), 1, file) != 1) {
fprintf(stderr, "Cannot read gen-aout!\n");
return -1;
}
target = argv[1];
if (target == NULL) {
fprintf(stderr, "Usage: gen-aout target_name\n");
exit (1);
}
printf("pagesize = %d\n", getpagesize());
#ifdef N_TXTOFF
page_size = N_TXTOFF(my_exec);
if (page_size == 0)
printf("#define N_HEADER_IN_TEXT(x) 1\n");
else
printf("#define N_HEADER_IN_TEXT(x) 0\n");
#endif
printf("#define BYTES_IN_WORD 4\n");
printf("#define ARCH 32\n");
if (my_exec.a_entry == 0) {
printf("#define ENTRY_CAN_BE_ZERO\n");
printf("#define N_SHARED_LIB(x) 0 /* Avoids warning */\n");
}
else {
printf("/*#define ENTRY_CAN_BE_ZERO*/\n");
printf("/*#define N_SHARED_LIB(x) 0*/\n");
}
printf("#define TEXT_START_ADDR %d\n", my_exec.a_entry);
#ifdef PAGSIZ
if (page_size == 0)
page_size = PAGSIZ;
#endif
if (page_size != 0)
printf("#define PAGE_SIZE %d\n", page_size);
else
printf("/* #define PAGE_SIZE ??? */\n");
printf("#define SEGMENT_SIZE PAGE_SIZE\n");
printf("#define DEFAULT_ARCH bfd_arch_m68k\n");
printf("\n#define MY(OP) CAT(%s_,OP)\n", target);
printf("#define TARGETNAME \"a.out-%s\"\n\n", target);
printf("#include \"bfd.h\"\n");
printf("#include \"sysdep.h\"\n");
printf("#include \"libbfd.h\"\n");
printf("#include \"libaout.h\"\n");
printf("\n#include \"aout-target.h\"\n");
return 0;
}