imgact_elf.h revision 210446 
1/*-
2 * Copyright (c) 1995-1996 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD: head/sys/sys/imgact_elf.h 210446 2010-07-24 14:23:06Z kib $
29 */
30
31#ifndef _SYS_IMGACT_ELF_H_
32#define	_SYS_IMGACT_ELF_H_
33
34#include <machine/elf.h>
35
36#ifdef _KERNEL
37
38#define	AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
39
40struct thread;
41
42/*
43 * Structure used to pass infomation from the loader to the
44 * stack fixup routine.
45 */
46typedef struct {
47	Elf_Ssize	execfd;
48	Elf_Size	phdr;
49	Elf_Size	phent;
50	Elf_Size	phnum;
51	Elf_Size	pagesz;
52	Elf_Size	base;
53	Elf_Size	flags;
54	Elf_Size	entry;
55} __ElfN(Auxargs);
56
57typedef struct {
58	Elf_Note	hdr;
59	const char *	vendor;
60	int		flags;
61	boolean_t	(*trans_osrel)(const Elf_Note *, int32_t *);
62#define	BN_CAN_FETCH_OSREL	0x0001	/* Deprecated. */
63#define	BN_TRANSLATE_OSREL	0x0002	/* Use trans_osrel to fetch osrel */
64		/* after checking the image ABI specification, if needed. */
65} Elf_Brandnote;
66
67typedef struct {
68	int brand;
69	int machine;
70	const char *compat_3_brand;	/* pre Binutils 2.10 method (FBSD 3) */
71	const char *emul_path;
72	const char *interp_path;
73	struct sysentvec *sysvec;
74	const char *interp_newpath;
75	int flags;
76	Elf_Brandnote *brand_note;
77#define	BI_CAN_EXEC_DYN		0x0001
78#define	BI_BRAND_NOTE		0x0002	/* May have note.ABI-tag section. */
79#define	BI_BRAND_NOTE_MANDATORY	0x0004	/* Must have note.ABI-tag section. */
80} __ElfN(Brandinfo);
81
82__ElfType(Auxargs);
83__ElfType(Brandinfo);
84
85#define	MAX_BRANDS	8
86
87int	__elfN(brand_inuse)(Elf_Brandinfo *entry);
88int	__elfN(insert_brand_entry)(Elf_Brandinfo *entry);
89int	__elfN(remove_brand_entry)(Elf_Brandinfo *entry);
90int	__elfN(freebsd_fixup)(register_t **, struct image_params *);
91int	__elfN(coredump)(struct thread *, struct vnode *, off_t, int);
92
93/* Machine specific function to dump per-thread information. */
94void	__elfN(dump_thread)(struct thread *, void *, size_t *);
95
96extern int __elfN(fallback_brand);
97extern Elf_Brandnote __elfN(freebsd_brandnote);
98extern Elf_Brandnote __elfN(kfreebsd_brandnote);
99#endif /* _KERNEL */
100
101#endif /* !_SYS_IMGACT_ELF_H_ */
102