1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/* BFD back-end definitions used by all NetBSD targets.
Copyright (C) 1990-2021 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
/* Check for our machine type (part of magic number). */
#ifndef MACHTYPE_OK
#define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN)
#endif
/* This is the normal load address for executables. */
#define TEXT_START_ADDR TARGET_PAGE_SIZE
/* NetBSD ZMAGIC has its header in the text segment. */
#define N_HEADER_IN_TEXT(x) 1
/* Determine if this is a shared library using the flags. */
#define N_SHARED_LIB(x) (N_DYNAMIC (x))
/* We have 6 bits of flags and 10 bits of machine ID. */
#define N_MACHTYPE(execp) \
((enum machine_type) (((execp)->a_info >> 16) & 0x03ff))
#define N_FLAGS(execp) \
(((execp)->a_info >> 26) & 0x3f)
#define N_SET_INFO(execp, magic, type, flags) \
((execp)->a_info = ((magic) & 0xffff) \
| (((int) (type) & 0x3ff) << 16) \
| (((flags) & 0x3f) << 24))
#define N_SET_MACHTYPE(execp, machtype) \
((execp)->a_info = \
((execp)->a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16))
#define N_SET_FLAGS(execp, flags) \
((execp)->a_info = \
((execp)->a_info & 0x03ffffff) | ((flags & 0x3fu) << 26))
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "libaout.h"
/* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
format. */
#define SWAP_MAGIC(ext) bfd_getb32 (ext)
/* On NetBSD, the entry point may be taken to be the start of the text
section. */
#define MY_entry_is_text_address 1
#define MY_write_object_contents MY (write_object_contents)
static bfd_boolean MY (write_object_contents) (bfd *);
#define MY_text_includes_header 1
#include "aout-target.h"
/* Write an object file.
Section contents have already been written. We write the
file header, symbols, and relocation. */
static bfd_boolean
MY (write_object_contents) (bfd *abfd)
{
struct external_exec exec_bytes;
struct internal_exec *execp = exec_hdr (abfd);
/* We must make certain that the magic number has been set. This
will normally have been done by set_section_contents, but only if
there actually are some section contents. */
if (! abfd->output_has_begun)
NAME (aout, adjust_sizes_and_vmas) (abfd);
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
/* Magic number, maestro, please! */
switch (bfd_get_arch(abfd))
{
case DEFAULT_ARCH:
N_SET_MACHTYPE (execp, DEFAULT_MID);
break;
default:
N_SET_MACHTYPE (execp, M_UNKNOWN);
break;
}
/* The NetBSD magic number is always big-endian. */
#ifndef TARGET_IS_BIG_ENDIAN_P
/* XXX aren't there any macro to change byteorder of a word independent of
the host's or target's endiannesses? */
execp->a_info
= (execp->a_info & 0xffu) << 24 | (execp->a_info & 0xff00) << 8
| (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24;
#endif
WRITE_HEADERS (abfd, execp);
return TRUE;
}
|
