1/* Generate parameters for an a.out system.
2   Copyright (C) 1990-2017 Free Software Foundation, Inc.
3
4   This file is part of BFD, the Binary File Descriptor library.
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 3 of the License, or
9   (at your option) any later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program; if not, write to the Free Software
18   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19   MA 02110-1301, USA.  */
20
21#include "/usr/include/a.out.h"
22#include <stdio.h>
23
24#ifndef _
25#define _(X) X
26#endif
27
28int
29main (int argc, char** argv)
30{
31  struct exec my_exec;
32  int page_size;
33  char * target;
34  char * arch = "unknown";
35  FILE * file;
36
37  target = argv[1];
38  if (target == NULL)
39    {
40      fprintf (stderr, "Usage: gen-aout target_name\n");
41      exit (1);
42    }
43
44  file = fopen ("gen-aout", "r");
45  if (file == NULL)
46    {
47      fprintf (stderr, "Cannot open gen-aout!\n");
48      return -1;
49    }
50
51  if (fread (&my_exec, sizeof (struct exec), 1, file) != 1)
52    {
53      fprintf(stderr, "Cannot read gen-aout!\n");
54      return -1;
55    }
56
57  fclose (file);
58
59#ifdef N_TXTOFF
60  page_size = N_TXTOFF (&my_exec);
61  if (page_size == 0)
62    printf ("#define N_HEADER_IN_TEXT(x) 1\n");
63  else
64    printf ("#define N_HEADER_IN_TEXT(x) 0\n");
65#endif
66
67  printf("#define BYTES_IN_WORD %d\n", sizeof (int));
68  if (my_exec.a_entry == 0)
69    {
70      printf ("#define ENTRY_CAN_BE_ZERO\n");
71      printf ("#define N_SHARED_LIB(x) 0 /* Avoids warning */\n");
72    }
73  else
74    {
75      printf ("/*#define ENTRY_CAN_BE_ZERO*/\n");
76      printf ("/*#define N_SHARED_LIB(x) 0*/\n");
77    }
78
79  printf ("#define TEXT_START_ADDR %d\n", my_exec.a_entry);
80
81#ifdef PAGSIZ
82  if (page_size == 0)
83    page_size = PAGSIZ;
84#endif
85
86  if (page_size != 0)
87    printf ("#define TARGET_PAGE_SIZE %d\n", page_size);
88  else
89    printf ("/* #define TARGET_PAGE_SIZE ??? */\n");
90
91  printf ("#define SEGMENT_SIZE TARGET_PAGE_SIZE\n");
92
93#ifdef vax
94  arch = "vax";
95#endif
96#ifdef m68k
97  arch = "m68k";
98#endif
99  if (arch[0] == '1')
100    {
101      fprintf (stderr, _("warning: preprocessor substituted architecture name inside string;"));
102      fprintf (stderr, _("         fix DEFAULT_ARCH in the output file yourself\n"));
103      arch = "unknown";
104    }
105  printf ("#define DEFAULT_ARCH bfd_arch_%s\n\n", arch);
106
107  printf ("/* Do not \"beautify\" the CONCAT* macro args.  Traditional C will not");
108  printf ("   remove whitespace added here, and thus will fail to concatenate");
109  printf ("   the tokens.  */");
110  printf ("\n#define MY(OP) CONCAT2 (%s_,OP)\n\n", target);
111  printf ("#define TARGETNAME \"a.out-%s\"\n\n", target);
112
113  printf ("#include \"sysdep.h\"\n");
114  printf ("#include \"bfd.h\"\n");
115  printf ("#include \"libbfd.h\"\n");
116  printf ("#include \"libaout.h\"\n");
117  printf ("\n#include \"aout-target.h\"\n");
118
119  return 0;
120}
121