2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1995-1996 Søren Schmidt
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef _SYS_IMGACT_ELF_H_
32 #define _SYS_IMGACT_ELF_H_
34 #include <machine/elf.h>
38 #define AUXARGS_ENTRY(pos, id, val) \
39 {(pos)->a_type = (id); (pos)->a_un.a_val = (val); (pos)++;}
40 #if (defined(__LP64__) && __ELF_WORD_SIZE == 32)
41 #define AUXARGS_ENTRY_PTR(pos, id, ptr) \
42 {(pos)->a_type = (id); (pos)->a_un.a_val = (uintptr_t)(ptr); (pos)++;}
44 #define AUXARGS_ENTRY_PTR(pos, id, ptr) \
45 {(pos)->a_type = (id); (pos)->a_un.a_ptr = (ptr); (pos)++;}
51 struct note_info_list;
55 * Structure used to pass information from the loader to the
56 * stack fixup routine.
67 Elf_Word hdr_eflags; /* e_flags field from ehdr */
74 bool (*trans_osrel)(const Elf_Note *, int32_t *);
75 #define BN_CAN_FETCH_OSREL 0x0001 /* Deprecated. */
76 #define BN_TRANSLATE_OSREL 0x0002 /* Use trans_osrel to fetch osrel */
77 /* after checking the image ABI specification, if needed. */
83 const char *compat_3_brand; /* pre Binutils 2.10 method (FBSD 3) */
84 const char *interp_path;
85 struct sysentvec *sysvec;
86 const char *interp_newpath;
88 Elf_Brandnote *brand_note;
89 bool (*header_supported)(struct image_params *,
90 int32_t *, uint32_t *);
91 /* High 8 bits of flags is private to the ABI */
92 #define BI_CAN_EXEC_DYN 0x0001
93 #define BI_BRAND_NOTE 0x0002 /* May have note.ABI-tag section. */
94 #define BI_BRAND_NOTE_MANDATORY 0x0004 /* Must have note.ABI-tag section. */
95 #define BI_BRAND_ONLY_STATIC 0x0008 /* Match only interp-less binaries. */
102 #define FREEBSD_ABI_VENDOR "FreeBSD"
103 #define GNU_ABI_VENDOR "GNU"
105 typedef void (*outfunc_t)(void *, struct sbuf *, size_t *);
107 /* Closure for __elfN(size_segments)(). */
108 struct sseg_closure {
109 int count; /* Count of writable segments. */
110 size_t size; /* Total size of all writable segments. */
113 bool __elfN(brand_inuse)(Elf_Brandinfo *entry);
114 int __elfN(insert_brand_entry)(Elf_Brandinfo *entry);
115 int __elfN(remove_brand_entry)(Elf_Brandinfo *entry);
116 int __elfN(freebsd_fixup)(uintptr_t *, struct image_params *);
117 int __elfN(coredump)(struct thread *, struct vnode *, off_t, int);
118 size_t __elfN(populate_note)(int, void *, void *, size_t, void **);
119 int __elfN(freebsd_copyout_auxargs)(struct image_params *, uintptr_t);
120 void __elfN(puthdr)(struct thread *, void *, size_t, int, size_t, int);
121 void __elfN(prepare_notes)(struct thread *, struct note_info_list *,
123 void __elfN(size_segments)(struct thread *, struct sseg_closure *, int);
124 size_t __elfN(register_note)(struct thread *, struct note_info_list *,
125 int, outfunc_t, void *);
126 bool __elfN(parse_notes)(struct image_params *, Elf_Note *, const char *,
127 const Elf_Phdr *, bool (*)(const Elf_Note *, void *, bool *),
130 /* Machine specific function to dump per-thread information. */
131 void __elfN(dump_thread)(struct thread *, void *, size_t *);
133 extern int __elfN(fallback_brand);
134 extern Elf_Brandnote __elfN(freebsd_brandnote);
135 extern Elf_Brandnote __elfN(kfreebsd_brandnote);
138 #endif /* !_SYS_IMGACT_ELF_H_ */