master
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * from: @(#)exec.h 8.1 (Berkeley) 6/11/93
32 */
33
34#ifndef _IMGACT_AOUT_H_
35#define _IMGACT_AOUT_H_
36
37#define N_GETMAGIC(ex) \
38 ( le32toh((ex).a_midmag) & 0xffff )
39#define N_GETMID(ex) \
40 ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
41 ((ex).a_midmag >> 16) & 0x03ff )
42#define N_GETFLAG(ex) \
43 ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
44 ((ex).a_midmag >> 26) & 0x3f )
45#define N_SETMAGIC(ex,mag,mid,flag) \
46 ( (ex).a_midmag = htole32((((flag) & 0x3f) <<26) | \
47 (((mid) & 0x03ff) << 16) | \
48 ((mag) & 0xffff)) )
49
50#define N_GETMAGIC_NET(ex) \
51 (ntohl((ex).a_midmag) & 0xffff)
52#define N_GETMID_NET(ex) \
53 ((ntohl((ex).a_midmag) >> 16) & 0x03ff)
54#define N_GETFLAG_NET(ex) \
55 ((ntohl((ex).a_midmag) >> 26) & 0x3f)
56#define N_SETMAGIC_NET(ex,mag,mid,flag) \
57 ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) \
58 | (((mag)&0xffff)) ) )
59
60#define N_ALIGN(ex,x) \
61 (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
62 N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
63 ((x) + __LDPGSZ - 1) & ~(uint32_t)(__LDPGSZ - 1) : (x))
64
65/* Valid magic number check. */
66#define N_BADMAG(ex) \
67 (N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
68 N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
69 N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
70 N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
71
72/* Address of the bottom of the text segment. */
73/*
74 * This can not be done right. Abuse a_entry in some cases to handle kernels.
75 */
76#define N_TXTADDR(ex) \
77 ((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
78 N_GETMAGIC(ex) == ZMAGIC) ? \
79 (le32toh((ex).a_entry) < le32toh((ex).a_text) ? 0 : \
80 le32toh((ex).a_entry) & ~__LDPGSZ) : __LDPGSZ)
81
82/* Address of the bottom of the data segment. */
83#define N_DATADDR(ex) \
84 N_ALIGN(ex, N_TXTADDR(ex) + le32toh((ex).a_text))
85
86/* Text segment offset. */
87#define N_TXTOFF(ex) \
88 (N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
89 N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))
90
91/* Data segment offset. */
92#define N_DATOFF(ex) \
93 N_ALIGN(ex, N_TXTOFF(ex) + le32toh((ex).a_text))
94
95/* Relocation table offset. */
96#define N_RELOFF(ex) \
97 N_ALIGN(ex, N_DATOFF(ex) + le32toh((ex).a_data))
98
99/* Symbol table offset. */
100#define N_SYMOFF(ex) \
101 (N_RELOFF(ex) + le32toh((ex).a_trsize) + le32toh((ex).a_drsize))
102
103/* String table offset. */
104#define N_STROFF(ex) (N_SYMOFF(ex) + le32toh((ex).a_syms))
105
106/*
107 * Header prepended to each a.out file.
108 * Only manipulate the a_midmag field via the
109 * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros.
110 */
111
112struct exec {
113 uint32_t a_midmag; /* flags<<26 | mid<<16 | magic */
114 uint32_t a_text; /* text segment size */
115 uint32_t a_data; /* initialized data size */
116 uint32_t a_bss; /* uninitialized data size */
117 uint32_t a_syms; /* symbol table size */
118 uint32_t a_entry; /* entry point */
119 uint32_t a_trsize; /* text relocation size */
120 uint32_t a_drsize; /* data relocation size */
121};
122#define a_magic a_midmag /* Hack for emulators */
123
124/* a_magic */
125#define OMAGIC 0407 /* old impure format */
126#define NMAGIC 0410 /* read-only text */
127#define ZMAGIC 0413 /* demand load format */
128#define QMAGIC 0314 /* "compact" demand load format */
129
130/* a_mid */
131#define MID_ZERO 0 /* unknown - implementation dependent */
132#define MID_SUN010 1 /* sun 68010/68020 binary */
133#define MID_SUN020 2 /* sun 68020-only binary */
134#define MID_I386 134 /* i386 BSD binary */
135#define MID_SPARC 138 /* sparc */
136#define MID_ARM6 143 /* ARM6 */
137#define MID_HP200 200 /* hp200 (68010) BSD binary */
138#define MID_HP300 300 /* hp300 (68020+68881) BSD binary */
139#define MID_HPUX 0x20C /* hp200/300 HP-UX binary */
140#define MID_HPUX800 0x20B /* hp800 HP-UX binary */
141
142/*
143 * a_flags
144 */
145#define EX_PIC 0x10 /* contains position independent code */
146#define EX_DYNAMIC 0x20 /* contains run-time link-edit info */
147#define EX_DPMASK 0x30 /* mask for the above */
148
149#ifdef _KERNEL
150struct thread;
151struct vnode;
152
153int aout_coredump(struct thread *td, struct vnode *vp, off_t limit,
154 int flags);
155#endif
156
157#endif /* !_IMGACT_AOUT_H_ */