1 /* Generate parameters for an a.out system.
2 Copyright (C) 1990-2016 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
28 int
main(int argc,char ** argv)29 main (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