archdep.h revision 1.14 
1/*	$OpenBSD: archdep.h,v 1.14 2015/12/06 23:36:12 guenther Exp $ */
2
3/*
4 * Copyright (c) 1998 Per Fogelstrom, Opsycon AB
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#ifndef _I386_ARCHDEP_H_
30#define _I386_ARCHDEP_H_
31
32#define	RELOC_TAG	DT_REL
33
34#define	DL_MALLOC_ALIGN	8	/* Arch constraint or otherwise */
35
36#define	MACHID	EM_386		/* ELF e_machine ID value checked */
37
38#define	RELTYPE	Elf32_Rela
39#define	RELSIZE	sizeof(Elf32_Rela)
40
41#include <sys/mman.h>
42#include <elf_abi.h>
43#include <machine/reloc.h>
44#include "syscall.h"
45#include "util.h"
46
47static inline void *
48_dl_mmap(void *addr, unsigned int len, unsigned int prot,
49	unsigned int flags, int fd, off_t offset)
50{
51	return((void *)_dl__syscall((quad_t)SYS_mmap, addr, len, prot,
52		flags, fd, 0, offset));
53}
54
55static inline void *
56_dl_mquery(void *addr, unsigned int len, unsigned int prot,
57	unsigned int flags, int fd, off_t offset)
58{
59	return((void *)_dl__syscall((quad_t)SYS_mquery, addr, len, prot,
60		flags, fd, 0, offset));
61}
62
63
64static inline void
65RELOC_DYN(Elf32_Rel *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v)
66{
67
68	if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) {
69		*p += v;
70	} else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) {
71		*p += v + s->st_value;
72	} else if (ELF32_R_TYPE(r->r_info) == RELOC_32) {
73		*p += v + s->st_value;
74	} else {
75		_dl_printf("unknown bootstrap relocation\n");
76		_dl_exit(6);
77	}
78}
79
80#define RELOC_GOT(obj, offs)
81
82#define GOT_PERMS PROT_READ
83
84#endif /* _I386_ARCHDEP_H_ */
85