1 /* BFD back-end definitions used by all NetBSD targets.
2 Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 2000, 2002,
3 2005, 2007 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 3 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,
20 MA 02110-1301, USA. */
23 /* Check for our machine type (part of magic number). */
25 #define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN)
28 /* This is the normal load address for executables. */
29 #define TEXT_START_ADDR TARGET_PAGE_SIZE
31 /* NetBSD ZMAGIC has its header in the text segment. */
32 #define N_HEADER_IN_TEXT(x) 1
34 /* Determine if this is a shared library using the flags. */
35 #define N_SHARED_LIB(x) (N_DYNAMIC (x))
37 /* We have 6 bits of flags and 10 bits of machine ID. */
38 #define N_MACHTYPE(exec) \
39 ((enum machine_type) (((exec).a_info >> 16) & 0x03ff))
40 #define N_FLAGS(exec) \
41 (((exec).a_info >> 26) & 0x3f)
43 #define N_SET_INFO(exec, magic, type, flags) \
44 ((exec).a_info = ((magic) & 0xffff) \
45 | (((int) (type) & 0x3ff) << 16) \
46 | (((flags) & 0x3f) << 24))
47 #define N_SET_MACHTYPE(exec, machtype) \
49 ((exec).a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16))
50 #define N_SET_FLAGS(exec, flags) \
52 ((exec).a_info & 0x03ffffff) | ((flags & 0x03f) << 26))
59 /* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
61 #define SWAP_MAGIC(ext) bfd_getb32 (ext)
63 /* On NetBSD, the entry point may be taken to be the start of the text
65 #define MY_entry_is_text_address 1
67 #define MY_write_object_contents MY (write_object_contents)
68 static bfd_boolean
MY (write_object_contents
) (bfd
*);
70 #define MY_text_includes_header 1
72 #include "aout-target.h"
74 /* Write an object file.
75 Section contents have already been written. We write the
76 file header, symbols, and relocation. */
79 MY (write_object_contents
) (bfd
*abfd
)
81 struct external_exec exec_bytes
;
82 struct internal_exec
*execp
= exec_hdr (abfd
);
84 /* We must make certain that the magic number has been set. This
85 will normally have been done by set_section_contents, but only if
86 there actually are some section contents. */
87 if (! abfd
->output_has_begun
)
89 bfd_size_type text_size
;
92 NAME (aout
, adjust_sizes_and_vmas
) (abfd
, & text_size
, & text_end
);
95 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
97 /* Magic number, maestro, please! */
98 switch (bfd_get_arch(abfd
))
101 N_SET_MACHTYPE(*execp
, DEFAULT_MID
);
104 N_SET_MACHTYPE(*execp
, M_UNKNOWN
);
108 /* The NetBSD magic number is always big-endian */
109 #ifndef TARGET_IS_BIG_ENDIAN_P
110 /* XXX aren't there any macro to change byteorder of a word independent of
111 the host's or target's endianesses? */
113 = (execp
->a_info
& 0xff) << 24 | (execp
->a_info
& 0xff00) << 8
114 | (execp
->a_info
& 0xff0000) >> 8 | (execp
->a_info
& 0xff000000) >> 24;
117 WRITE_HEADERS (abfd
, execp
);
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