archdep.h revision 1.8 
1/*	$OpenBSD: archdep.h,v 1.8 2003/06/09 16:10:03 deraadt 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	DL_MALLOC_ALIGN	8	/* Arch constraint or otherwise */
33
34#define	MACHID	EM_386		/* ELF e_machine ID value checked */
35
36#define	RELTYPE	Elf32_Rela
37#define	RELSIZE	sizeof(Elf32_Rela)
38
39#include <sys/mman.h>
40#include <elf_abi.h>
41#include <machine/reloc.h>
42#include "syscall.h"
43#include "util.h"
44
45static inline void *
46_dl_mmap(void *addr, unsigned int len, unsigned int prot,
47	unsigned int flags, int fd, off_t offset)
48{
49	return((void *)_dl__syscall((quad_t)SYS_mmap, addr, len, prot,
50		flags, fd, 0, offset));
51}
52
53static inline void *
54_dl_mquery(void *addr, unsigned int len, unsigned int prot,
55	unsigned int flags, int fd, off_t offset)
56{
57	return((void *)_dl__syscall((quad_t)SYS_mquery, addr, len, prot,
58		flags, fd, 0, offset));
59}
60
61
62static inline void
63RELOC_REL(Elf32_Rel *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v)
64{
65
66	if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) {
67		*p += v;
68	} else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) {
69		*p += v + s->st_value;
70	} else {
71		_dl_printf("unknown bootstrap relocation\n");
72		_dl_exit(6);
73	}
74}
75
76static inline void
77RELOC_RELA(Elf32_Rela *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v)
78{
79	/* does i386 use RELA type relocations? - XXX */
80
81	if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) {
82		*p = v + r->r_addend;
83	} else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) {
84		*p = v + s->st_value + r->r_addend;
85	} else {
86		_dl_printf("unknown bootstrap relocation\n");
87		_dl_exit(6);
88	}
89}
90
91#define RELOC_GOT(obj, offs)
92
93#define GOT_PERMS PROT_READ
94
95#endif /* _I386_ARCHDEP_H_ */
96