gen-aout.c revision 1.2 
1/* Generate parameters for an a.out system.
2   Copyright (C) 1990, 91, 92, 93, 94, 98 Free Software Foundation, Inc.
3
4This file is part of BFD, the Binary File Descriptor library.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
19
20#include "/usr/include/a.out.h"
21#include <stdio.h>
22
23int
24main (argc, argv)
25     int argc; char** argv;
26{
27  struct exec my_exec;
28  int page_size;
29  char *target = "unknown", *arch = "unknown";
30  FILE *file = fopen("gen-aout", "r");
31
32  if (file == NULL) {
33      fprintf(stderr, "Cannot open gen-aout!\n");
34      return -1;
35  }
36  if (fread(&my_exec, sizeof(struct exec), 1, file) != 1) {
37      fprintf(stderr, "Cannot read gen-aout!\n");
38      return -1;
39  }
40
41  target = argv[1];
42  if (target == NULL) {
43      fprintf(stderr, "Usage: gen-aout target_name\n");
44      exit (1);
45  }
46
47#ifdef N_TXTOFF
48  page_size = N_TXTOFF(my_exec);
49  if (page_size == 0)
50    printf("#define N_HEADER_IN_TEXT(x) 1\n");
51  else
52    printf("#define N_HEADER_IN_TEXT(x) 0\n");
53#endif
54
55  printf("#define BYTES_IN_WORD %d\n", sizeof (int));
56  if (my_exec.a_entry == 0) {
57      printf("#define ENTRY_CAN_BE_ZERO\n");
58      printf("#define N_SHARED_LIB(x) 0 /* Avoids warning */\n");
59  }
60  else {
61      printf("/*#define ENTRY_CAN_BE_ZERO*/\n");
62      printf("/*#define N_SHARED_LIB(x) 0*/\n");
63  }
64
65  printf("#define TEXT_START_ADDR %d\n", my_exec.a_entry);
66
67#ifdef PAGSIZ
68  if (page_size == 0)
69    page_size = PAGSIZ;
70#endif
71  if (page_size != 0)
72    printf("#define TARGET_PAGE_SIZE %d\n", page_size);
73  else
74    printf("/* #define TARGET_PAGE_SIZE ??? */\n");
75  printf("#define SEGMENT_SIZE TARGET_PAGE_SIZE\n");
76
77#ifdef vax
78  arch = "vax";
79#endif
80#ifdef m68k
81  arch = "m68k";
82#endif
83  if (arch[0] == '1')
84    {
85      fprintf (stderr, _("warning: preprocessor substituted architecture name inside string;"));
86      fprintf (stderr, _("         fix DEFAULT_ARCH in the output file yourself\n"));
87      arch = "unknown";
88    }
89  printf("#define DEFAULT_ARCH bfd_arch_%s\n", arch);
90
91  printf("\n#define MY(OP) CAT(%s_,OP)\n", target);
92  printf("#define TARGETNAME \"a.out-%s\"\n\n", target);
93
94  printf("#include \"bfd.h\"\n");
95  printf("#include \"sysdep.h\"\n");
96  printf("#include \"libbfd.h\"\n");
97  printf("#include \"libaout.h\"\n");
98  printf("\n#include \"aout-target.h\"\n");
99
100  return 0;
101}
102