1/* Generate parameters for an a.out system.
2   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 2001, 2002, 2007
3   Free Software Foundation, Inc.
4
5   This file is part of BFD, the Binary File Descriptor library.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software
19   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20   MA 02110-1301, USA.  */
21
22#include "/usr/include/a.out.h"
23#include <stdio.h>
24
25#ifndef _
26#define _(X) X
27#endif
28
29int
30main (argc, argv)
31     int argc; char** argv;
32{
33  struct exec my_exec;
34  int page_size;
35  char *target = "unknown", *arch = "unknown";
36  FILE *file = fopen("gen-aout", "r");
37
38  if (file == NULL) {
39      fprintf(stderr, "Cannot open gen-aout!\n");
40      return -1;
41  }
42  if (fread(&my_exec, sizeof(struct exec), 1, file) != 1) {
43      fprintf(stderr, "Cannot read gen-aout!\n");
44      return -1;
45  }
46
47  target = argv[1];
48  if (target == NULL) {
49      fprintf(stderr, "Usage: gen-aout target_name\n");
50      exit (1);
51  }
52
53#ifdef N_TXTOFF
54  page_size = N_TXTOFF(my_exec);
55  if (page_size == 0)
56    printf("#define N_HEADER_IN_TEXT(x) 1\n");
57  else
58    printf("#define N_HEADER_IN_TEXT(x) 0\n");
59#endif
60
61  printf("#define BYTES_IN_WORD %d\n", sizeof (int));
62  if (my_exec.a_entry == 0) {
63      printf("#define ENTRY_CAN_BE_ZERO\n");
64      printf("#define N_SHARED_LIB(x) 0 /* Avoids warning */\n");
65  }
66  else {
67      printf("/*#define ENTRY_CAN_BE_ZERO*/\n");
68      printf("/*#define N_SHARED_LIB(x) 0*/\n");
69  }
70
71  printf("#define TEXT_START_ADDR %d\n", my_exec.a_entry);
72
73#ifdef PAGSIZ
74  if (page_size == 0)
75    page_size = PAGSIZ;
76#endif
77  if (page_size != 0)
78    printf("#define TARGET_PAGE_SIZE %d\n", page_size);
79  else
80    printf("/* #define TARGET_PAGE_SIZE ??? */\n");
81  printf("#define SEGMENT_SIZE TARGET_PAGE_SIZE\n");
82
83#ifdef vax
84  arch = "vax";
85#endif
86#ifdef m68k
87  arch = "m68k";
88#endif
89  if (arch[0] == '1')
90    {
91      fprintf (stderr, _("warning: preprocessor substituted architecture name inside string;"));
92      fprintf (stderr, _("         fix DEFAULT_ARCH in the output file yourself\n"));
93      arch = "unknown";
94    }
95  printf("#define DEFAULT_ARCH bfd_arch_%s\n\n", arch);
96
97  printf("/* Do not \"beautify\" the CONCAT* macro args.  Traditional C will not");
98  printf("   remove whitespace added here, and thus will fail to concatenate");
99  printf("   the tokens.  */");
100  printf("\n#define MY(OP) CONCAT2 (%s_,OP)\n\n", target);
101  printf("#define TARGETNAME \"a.out-%s\"\n\n", target);
102
103  printf("#include \"sysdep.h\"\n");
104  printf("#include \"bfd.h\"\n");
105  printf("#include \"libbfd.h\"\n");
106  printf("#include \"libaout.h\"\n");
107  printf("\n#include \"aout-target.h\"\n");
108
109  return 0;
110}
111