FreeBSD/Linux Kernel Cross Reference
sys/sys/imgact_elf.h
1 /*-
2 * Copyright (c) 1995-1996 Søren 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 * $FreeBSD$
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
40 struct image_params;
41 struct thread;
42 struct vnode;
43
44 /*
45 * Structure used to pass information from the loader to the
46 * stack fixup routine.
47 */
48 typedef struct {
49 Elf_Ssize execfd;
50 Elf_Size phdr;
51 Elf_Size phent;
52 Elf_Size phnum;
53 Elf_Size pagesz;
54 Elf_Size base;
55 Elf_Size flags;
56 Elf_Size entry;
57 Elf_Word hdr_eflags; /* e_flags field from ehdr */
58 } __ElfN(Auxargs);
59
60 typedef struct {
61 Elf_Note hdr;
62 const char * vendor;
63 int flags;
64 bool (*trans_osrel)(const Elf_Note *, int32_t *);
65 #define BN_CAN_FETCH_OSREL 0x0001 /* Deprecated. */
66 #define BN_TRANSLATE_OSREL 0x0002 /* Use trans_osrel to fetch osrel */
67 /* after checking the image ABI specification, if needed. */
68 } Elf_Brandnote;
69
70 typedef struct {
71 int brand;
72 int machine;
73 const char *compat_3_brand; /* pre Binutils 2.10 method (FBSD 3) */
74 const char *emul_path;
75 const char *interp_path;
76 struct sysentvec *sysvec;
77 const char *interp_newpath;
78 int flags;
79 Elf_Brandnote *brand_note;
80 boolean_t (*header_supported)(struct image_params *);
81 #define BI_CAN_EXEC_DYN 0x0001
82 #define BI_BRAND_NOTE 0x0002 /* May have note.ABI-tag section. */
83 #define BI_BRAND_NOTE_MANDATORY 0x0004 /* Must have note.ABI-tag section. */
84 #define BI_BRAND_ONLY_STATIC 0x0008 /* Match only interp-less binaries. */
85 } __ElfN(Brandinfo);
86
87 __ElfType(Auxargs);
88 __ElfType(Brandinfo);
89
90 #define MAX_BRANDS 8
91
92 int __elfN(brand_inuse)(Elf_Brandinfo *entry);
93 int __elfN(insert_brand_entry)(Elf_Brandinfo *entry);
94 int __elfN(remove_brand_entry)(Elf_Brandinfo *entry);
95 int __elfN(freebsd_fixup)(register_t **, struct image_params *);
96 int __elfN(coredump)(struct thread *, struct vnode *, off_t, int);
97 size_t __elfN(populate_note)(int, void *, void *, size_t, void **);
98
99 /* Machine specific function to dump per-thread information. */
100 void __elfN(dump_thread)(struct thread *, void *, size_t *);
101
102 extern int __elfN(fallback_brand);
103 extern Elf_Brandnote __elfN(freebsd_brandnote);
104 extern Elf_Brandnote __elfN(kfreebsd_brandnote);
105 #endif /* _KERNEL */
106
107 #endif /* !_SYS_IMGACT_ELF_H_ */
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