1 /* BFD back-end definitions used by all NetBSD targets.
2 Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 2000, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
22 /* Check for our machine type (part of magic number). */
24 #define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN)
27 /* This is the normal load address for executables. */
28 #define TEXT_START_ADDR TARGET_PAGE_SIZE
30 /* NetBSD ZMAGIC has its header in the text segment. */
31 #define N_HEADER_IN_TEXT(x) 1
33 /* Determine if this is a shared library using the flags. */
34 #define N_SHARED_LIB(x) (N_DYNAMIC(x))
36 /* We have 6 bits of flags and 10 bits of machine ID. */
37 #define N_MACHTYPE(exec) \
38 ((enum machine_type) (((exec).a_info >> 16) & 0x03ff))
39 #define N_FLAGS(exec) \
40 (((exec).a_info >> 26) & 0x3f)
42 #define N_SET_INFO(exec, magic, type, flags) \
43 ((exec).a_info = ((magic) & 0xffff) \
44 | (((int) (type) & 0x3ff) << 16) \
45 | (((flags) & 0x3f) << 24))
46 #define N_SET_MACHTYPE(exec, machtype) \
48 ((exec).a_info & 0xfb00ffff) | ((((int) (machtype))&0x3ff) << 16))
49 #define N_SET_FLAGS(exec, flags) \
51 ((exec).a_info & 0x03ffffff) | ((flags & 0x03f) << 26))
58 /* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
60 #define SWAP_MAGIC(ext) bfd_getb32 (ext)
62 /* On NetBSD, the entry point may be taken to be the start of the text
64 #define MY_entry_is_text_address 1
66 #define MY_write_object_contents MY(write_object_contents)
67 static bfd_boolean
MY(write_object_contents
) PARAMS ((bfd
*abfd
));
68 #define MY_text_includes_header 1
70 #include "aout-target.h"
72 /* Write an object file.
73 Section contents have already been written. We write the
74 file header, symbols, and relocation. */
77 MY(write_object_contents
) (abfd
)
80 struct external_exec exec_bytes
;
81 struct internal_exec
*execp
= exec_hdr (abfd
);
83 /* We must make certain that the magic number has been set. This
84 will normally have been done by set_section_contents, but only if
85 there actually are some section contents. */
86 if (! abfd
->output_has_begun
)
88 bfd_size_type text_size
;
91 NAME(aout
,adjust_sizes_and_vmas
) (abfd
, &text_size
, &text_end
);
94 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
96 /* Magic number, maestro, please! */
97 switch (bfd_get_arch(abfd
)) {
99 N_SET_MACHTYPE(*execp
, DEFAULT_MID
);
102 N_SET_MACHTYPE(*execp
, M_UNKNOWN
);
106 /* The NetBSD magic number is always big-endian */
107 #ifndef TARGET_IS_BIG_ENDIAN_P
108 /* XXX aren't there any macro to change byteorder of a word independent of
109 the host's or target's endianesses? */
111 = (execp
->a_info
& 0xff) << 24 | (execp
->a_info
& 0xff00) << 8
112 | (execp
->a_info
& 0xff0000) >> 8 | (execp
->a_info
& 0xff000000) >> 24;
115 WRITE_HEADERS(abfd
, execp
);
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