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252b5132 | 1 | /* BFD back-end for i386 a.out binaries. |
7898deda NC |
2 | Copyright 1990, 1991, 1992, 1994, 1996, 1997 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | ||
22 | /* The only 386 aout system we have here is GO32 from DJ. | |
23 | These numbers make BFD work with that. If your aout 386 system | |
24 | doesn't work with these, we'll have to split them into different | |
25 | files. Send me (sac@cygnus.com) the runes to make it work on your | |
26 | system, and I'll stick it in for the next release. */ | |
27 | ||
28 | #define N_HEADER_IN_TEXT(x) 0 | |
29 | #define BYTES_IN_WORD 4 | |
30 | ||
31 | #define N_TXTOFF(x) 0x20 | |
32 | #define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0) | |
33 | ||
34 | #define N_TXTSIZE(x) ((x).a_text) | |
35 | #if 0 | |
36 | #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1)))) | |
37 | #define NOSUBEXECB | |
38 | ||
39 | #endif | |
40 | #define TARGET_PAGE_SIZE 4096 | |
41 | #define SEGMENT_SIZE 0x400000 | |
42 | #define DEFAULT_ARCH bfd_arch_i386 | |
43 | ||
44 | #define MY(OP) CAT(i386aout_,OP) | |
45 | #define TARGETNAME "a.out-i386" | |
46 | #define NO_WRITE_HEADER_KLUDGE 1 | |
47 | ||
48 | #include "bfd.h" | |
49 | #include "sysdep.h" | |
50 | #include "libbfd.h" | |
51 | #include "aout/aout64.h" | |
52 | #include "libaout.h" | |
53 | ||
54 | /* Set the machine type correctly. */ | |
55 | ||
56 | static boolean | |
57 | i386aout_write_object_contents (abfd) | |
58 | bfd *abfd; | |
59 | { | |
60 | struct external_exec exec_bytes; | |
61 | struct internal_exec *execp = exec_hdr (abfd); | |
62 | ||
63 | N_SET_MACHTYPE (*execp, M_386); | |
64 | ||
65 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
66 | ||
67 | WRITE_HEADERS (abfd, execp); | |
68 | ||
69 | return true; | |
70 | } | |
71 | ||
72 | #define MY_write_object_contents i386aout_write_object_contents | |
73 | ||
74 | static boolean MY(set_sizes)(); | |
75 | #define MY_backend_data &MY(backend_data) | |
76 | static CONST struct aout_backend_data MY(backend_data) = { | |
77 | 0, /* zmagic contiguous */ | |
78 | 1, /* text incl header */ | |
79 | 0, /* entry is text address */ | |
80 | 0, /* exec_hdr_flags */ | |
81 | 0, /* text vma? */ | |
82 | MY(set_sizes), | |
83 | 1, /* exec header not counted */ | |
84 | 0, /* add_dynamic_symbols */ | |
85 | 0, /* add_one_symbol */ | |
86 | 0, /* link_dynamic_object */ | |
87 | 0, /* write_dynamic_symbol */ | |
88 | 0, /* check_dynamic_reloc */ | |
89 | 0 /* finish_dynamic_link */ | |
90 | }; | |
91 | ||
92 | #include "aout-target.h" |