1 /* BFD back-end definitions used by all FreeBSD targets.
2 Copyright 1990, 1991, 1992, 1996, 1997, 2000, 2001
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 /* $FreeBSD: src/contrib/binutils/bfd/freebsd.h,v 1.2.6.4 2002/09/01 23:43:39 obrien Exp $ */
23 /* $DragonFly: src/contrib/binutils/bfd/Attic/dragonfly.h,v 1.1 2003/11/19 00:51:31 dillon Exp $ */
25 /* FreeBSD QMAGIC files have the header in the text. */
26 #define N_HEADER_IN_TEXT(x) 1
27 #define MY_text_includes_header 1
29 #define TEXT_START_ADDR (TARGET_PAGE_SIZE + 0x20)
32 * FreeBSD uses a weird mix of byte orderings for its a_info field.
33 * Its assembler emits NetBSD style object files, with a big-endian
34 * a_info. Its linker seems to accept either byte ordering, but
35 * emits a little-endian a_info.
37 * Here, we accept either byte ordering, but always produce
40 * FIXME - Probably we should always produce the _native_ byte
41 * ordering. I.e., it should be in the architecture-specific
42 * file, not here. But in reality, there is no chance
43 * that FreeBSD will ever use a.out in a new port.
46 #define N_MACHTYPE(exec) \
47 ((enum machine_type) \
48 ((freebsd_swap_magic(&(exec).a_info) >> 16) & 0x3ff))
49 #define N_FLAGS(exec) \
50 ((enum machine_type) \
51 ((freebsd_swap_magic(&(exec).a_info) >> 26) & 0x3f))
53 #define N_SET_INFO(exec, magic, type, flags) \
54 ((exec).a_info = ((magic) & 0xffff) \
55 | (((int)(type) & 0x3ff) << 16) \
56 | (((flags) & 0x3f) << 26))
57 #define N_SET_MACHTYPE(exec, machtype) \
59 ((exec).a_info & 0xfb00ffff) | ((((int)(machtype))&0x3ff) << 16))
60 #define N_SET_FLAGS(exec, flags) \
62 ((exec).a_info & 0x03ffffff) | ((flags & 0x03f) << 26))
69 #define SWAP_MAGIC(ext) (freebsd_swap_magic(ext))
71 #define MY_bfd_final_link MY(bfd_final_link)
72 #define MY_write_object_contents MY(write_object_contents)
74 static boolean MY(bfd_final_link) PARAMS ((bfd *, struct bfd_link_info *));
75 static boolean MY(write_object_contents) PARAMS ((bfd *abfd));
76 static long freebsd_swap_magic PARAMS ((void *ext));
78 #include "aout-target.h"
81 MY(bfd_final_link) (abfd, info)
83 struct bfd_link_info *info;
85 obj_aout_subformat (abfd) = q_magic_format;
86 return NAME(aout,final_link) (abfd, info, MY_final_link_callback);
89 /* Swap a magic number. We accept either endian, whichever looks valid. */
92 freebsd_swap_magic (ext)
95 long linfo = bfd_getl32(ext);
96 long binfo = bfd_getb32(ext);
97 int lmagic = linfo & 0xffff;
98 int bmagic = binfo & 0xffff;
99 int lmagic_ok = lmagic == OMAGIC || lmagic == NMAGIC ||
100 lmagic == ZMAGIC || lmagic == QMAGIC;
101 int bmagic_ok = bmagic == OMAGIC || bmagic == NMAGIC ||
102 bmagic == ZMAGIC || bmagic == QMAGIC;
104 return bmagic_ok && !lmagic_ok ? binfo : linfo;
107 /* Write an object file.
108 Section contents have already been written. We write the
109 file header, symbols, and relocation. */
112 MY(write_object_contents) (abfd)
115 struct external_exec exec_bytes;
116 struct internal_exec *execp = exec_hdr (abfd);
118 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
120 /* Magic number, maestro, please! */
121 switch (bfd_get_arch(abfd)) {
123 if (strcmp (abfd->xvec->name, "a.out-m68k4k-netbsd") == 0)
124 N_SET_MACHTYPE(*execp, M_68K4K_NETBSD);
126 N_SET_MACHTYPE(*execp, M_68K_NETBSD);
129 N_SET_MACHTYPE(*execp, M_SPARC_NETBSD);
132 N_SET_MACHTYPE(*execp, M_386_NETBSD);
135 N_SET_MACHTYPE(*execp, M_532_NETBSD);
138 N_SET_MACHTYPE(*execp, M_UNKNOWN);
142 WRITE_HEADERS(abfd, execp);