1/*-
2 * Copyright (c) 1999, 2000 John D. Polstra.
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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/libexec/rtld-elf/amd64/rtld_machdep.h 115396 2003-05-29 22:58:26Z kan $
27 */
28
29#ifndef RTLD_MACHDEP_H
30#define RTLD_MACHDEP_H 1
31
32#include <sys/types.h>
33#include <machine/atomic.h>
34
35#define CACHE_LINE_SIZE 32
36
37struct Struct_Obj_Entry;
38
39/* Return the address of the .dynamic section in the dynamic linker. */
40#define rtld_dynamic(obj) \
41 ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC))
42
43/* Fixup the jump slot at "where" to transfer control to "target". */
44static inline Elf_Addr
45reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
46 const struct Struct_Obj_Entry *obj,
47 const struct Struct_Obj_Entry *refobj, const Elf_Rel *rel)
48{
49 dbg("reloc_jmpslot: *%p = %p", (void *)(where),
50 (void *)(target));
51 (*(Elf_Addr *)(where) = (Elf_Addr)(target));
52 return target;
53}
54
55#define make_function_pointer(def, defobj) \
56 ((defobj)->relocbase + (def)->st_value)
57
58#define call_initfini_pointer(obj, target) \
59 (((InitFunc)(target))())
60
61#endif
2 * Copyright (c) 1999, 2000 John D. Polstra.
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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/libexec/rtld-elf/amd64/rtld_machdep.h 115396 2003-05-29 22:58:26Z kan $
27 */
28
29#ifndef RTLD_MACHDEP_H
30#define RTLD_MACHDEP_H 1
31
32#include <sys/types.h>
33#include <machine/atomic.h>
34
35#define CACHE_LINE_SIZE 32
36
37struct Struct_Obj_Entry;
38
39/* Return the address of the .dynamic section in the dynamic linker. */
40#define rtld_dynamic(obj) \
41 ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC))
42
43/* Fixup the jump slot at "where" to transfer control to "target". */
44static inline Elf_Addr
45reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
46 const struct Struct_Obj_Entry *obj,
47 const struct Struct_Obj_Entry *refobj, const Elf_Rel *rel)
48{
49 dbg("reloc_jmpslot: *%p = %p", (void *)(where),
50 (void *)(target));
51 (*(Elf_Addr *)(where) = (Elf_Addr)(target));
52 return target;
53}
54
55#define make_function_pointer(def, defobj) \
56 ((defobj)->relocbase + (def)->st_value)
57
58#define call_initfini_pointer(obj, target) \
59 (((InitFunc)(target))())
60
61#endif