rtld_machdep.h revision 107071 
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/ia64/rtld_machdep.h 107071 2002-11-18 22:08:50Z tmm $
27 */
28
29#ifndef RTLD_MACHDEP_H
30#define RTLD_MACHDEP_H	1
31
32/*
33 * Macros for cracking ia64 function pointers.
34 */
35struct fptr {
36	Elf_Addr	target;
37	Elf_Addr	gp;
38};
39
40#define FPTR_TARGET(f)	(((struct fptr *) (f))->target)
41#define FPTR_GP(f)	(((struct fptr *) (f))->gp)
42
43/* Return the address of the .dynamic section in the dynamic linker. */
44#define rtld_dynamic(obj)	(&_DYNAMIC)
45
46struct Struct_Obj_Entry;
47
48Elf_Addr reloc_jmpslot(Elf_Addr *, Elf_Addr, const struct Struct_Obj_Entry *,
49		       const struct Struct_Obj_Entry *, const Elf_Rel *);
50void *make_function_pointer(const Elf_Sym *, const struct Struct_Obj_Entry *);
51void call_initfini_pointer(const struct Struct_Obj_Entry *, Elf_Addr);
52
53/* Atomic operations. */
54int cmp0_and_store_int(volatile int *, int);
55void atomic_add_int(volatile int *, int);
56void atomic_incr_int(volatile int *);
57void atomic_decr_int(volatile int *);
58
59#endif
60