rtld_machdep.h revision 281486 
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: stable/10/libexec/rtld-elf/ia64/rtld_machdep.h 281486 2015-04-13 08:35:03Z peter $
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/*
36 * Macros for cracking ia64 function pointers.
37 */
38struct fptr {
39	Elf_Addr	target;
40	Elf_Addr	gp;
41};
42
43#define FPTR_TARGET(f)	(((struct fptr *) (f))->target)
44#define FPTR_GP(f)	(((struct fptr *) (f))->gp)
45
46/* Return the address of the .dynamic section in the dynamic linker. */
47#define rtld_dynamic(obj)	(&_DYNAMIC)
48
49struct Struct_Obj_Entry;
50
51Elf_Addr reloc_jmpslot(Elf_Addr *, Elf_Addr, const struct Struct_Obj_Entry *,
52		       const struct Struct_Obj_Entry *, const Elf_Rel *);
53void *make_function_pointer(const Elf_Sym *, const struct Struct_Obj_Entry *);
54void call_initfini_pointer(const struct Struct_Obj_Entry *, Elf_Addr);
55void call_init_pointer(const struct Struct_Obj_Entry *, Elf_Addr);
56
57#define	TLS_TCB_SIZE	16
58
59#define round(size, align) \
60	(((size) + (align) - 1) & ~((align) - 1))
61#define calculate_first_tls_offset(size, align) \
62	round(TLS_TCB_SIZE, align)
63#define calculate_tls_offset(prev_offset, prev_size, size, align) \
64	round(prev_offset + prev_size, align)
65#define calculate_tls_end(off, size) 	((off) + (size))
66
67extern void *__tls_get_addr(unsigned long module, unsigned long offset);
68
69#define	RTLD_DEFAULT_STACK_PF_EXEC	0
70#define	RTLD_DEFAULT_STACK_EXEC		0
71
72#define	RTLD_INIT_PAGESIZES_EARLY	1
73
74#endif
75