1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999, 2000 John D. Polstra.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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#include <machine/tls.h>
35
36struct Struct_Obj_Entry;
37
38#define	MD_OBJ_ENTRY
39
40/* Return the address of the .dynamic section in the dynamic linker. */
41Elf_Dyn *rtld_dynamic_addr(void);
42#define	rtld_dynamic(obj)	rtld_dynamic_addr()
43
44/* No arch-specific dynamic tags */
45#define	arch_digest_dynamic(obj, dynp)	false
46
47/* No architecture specific notes */
48#define	arch_digest_note(obj, note)	false
49
50Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
51    const struct Struct_Obj_Entry *obj, const struct Struct_Obj_Entry *refobj,
52    const Elf_Rel *rel);
53
54#define make_function_pointer(def, defobj)	\
55	((defobj)->relocbase + (def)->st_value)
56
57#define call_initfini_pointer(obj, target) \
58	(((InitFunc)(target))())
59
60#define call_init_pointer(obj, target) \
61	(((InitArrFunc)(target))(main_argc, main_argv, environ))
62
63extern uint32_t cpu_feature;
64extern uint32_t cpu_feature2;
65extern uint32_t cpu_stdext_feature;
66extern uint32_t cpu_stdext_feature2;
67#define	call_ifunc_resolver(ptr) \
68	(((Elf_Addr (*)(uint32_t, uint32_t, uint32_t, uint32_t))ptr)( \
69	    cpu_feature, cpu_feature2, cpu_stdext_feature, cpu_stdext_feature2))
70
71typedef struct {
72    unsigned long ti_module;
73    unsigned long ti_offset;
74} tls_index;
75
76void *__tls_get_addr(tls_index *ti) __exported;
77
78#define md_abi_variant_hook(x)
79
80size_t calculate_first_tls_offset(size_t size, size_t align, size_t offset);
81size_t calculate_tls_offset(size_t prev_offset, size_t prev_size, size_t size,
82    size_t align, size_t offset);
83#endif
84