gas/
[binutils.git] / bfd / gen-aout.c
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1 /* Generate parameters for an a.out system.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 2001, 2002
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
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 2 of the License, or
10 (at your option) any later version.
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.
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, MA 02110-1301, USA. */
21 #include "/usr/include/a.out.h"
22 #include <stdio.h>
24 #ifndef _
25 #define _(X) X
26 #endif
28 int
29 main (argc, argv)
30 int argc; char** argv;
32 struct exec my_exec;
33 int page_size;
34 char *target = "unknown", *arch = "unknown";
35 FILE *file = fopen("gen-aout", "r");
37 if (file == NULL) {
38 fprintf(stderr, "Cannot open gen-aout!\n");
39 return -1;
41 if (fread(&my_exec, sizeof(struct exec), 1, file) != 1) {
42 fprintf(stderr, "Cannot read gen-aout!\n");
43 return -1;
46 target = argv[1];
47 if (target == NULL) {
48 fprintf(stderr, "Usage: gen-aout target_name\n");
49 exit (1);
52 #ifdef N_TXTOFF
53 page_size = N_TXTOFF(my_exec);
54 if (page_size == 0)
55 printf("#define N_HEADER_IN_TEXT(x) 1\n");
56 else
57 printf("#define N_HEADER_IN_TEXT(x) 0\n");
58 #endif
60 printf("#define BYTES_IN_WORD %d\n", sizeof (int));
61 if (my_exec.a_entry == 0) {
62 printf("#define ENTRY_CAN_BE_ZERO\n");
63 printf("#define N_SHARED_LIB(x) 0 /* Avoids warning */\n");
65 else {
66 printf("/*#define ENTRY_CAN_BE_ZERO*/\n");
67 printf("/*#define N_SHARED_LIB(x) 0*/\n");
70 printf("#define TEXT_START_ADDR %d\n", my_exec.a_entry);
72 #ifdef PAGSIZ
73 if (page_size == 0)
74 page_size = PAGSIZ;
75 #endif
76 if (page_size != 0)
77 printf("#define TARGET_PAGE_SIZE %d\n", page_size);
78 else
79 printf("/* #define TARGET_PAGE_SIZE ??? */\n");
80 printf("#define SEGMENT_SIZE TARGET_PAGE_SIZE\n");
82 #ifdef vax
83 arch = "vax";
84 #endif
85 #ifdef m68k
86 arch = "m68k";
87 #endif
88 if (arch[0] == '1')
90 fprintf (stderr, _("warning: preprocessor substituted architecture name inside string;"));
91 fprintf (stderr, _(" fix DEFAULT_ARCH in the output file yourself\n"));
92 arch = "unknown";
94 printf("#define DEFAULT_ARCH bfd_arch_%s\n\n", arch);
96 printf("/* Do not \"beautify\" the CONCAT* macro args. Traditional C will not");
97 printf(" remove whitespace added here, and thus will fail to concatenate");
98 printf(" the tokens. */");
99 printf("\n#define MY(OP) CONCAT2 (%s_,OP)\n\n", target);
100 printf("#define TARGETNAME \"a.out-%s\"\n\n", target);
102 printf("#include \"bfd.h\"\n");
103 printf("#include \"sysdep.h\"\n");
104 printf("#include \"libbfd.h\"\n");
105 printf("#include \"libaout.h\"\n");
106 printf("\n#include \"aout-target.h\"\n");
108 return 0;