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    Elf_Addr glink;		/* GLINK PLT call stub section */
40
41/* Return the address of the .dynamic section in the dynamic linker. */
42#define rtld_dynamic(obj)    (&_DYNAMIC)
43
44bool arch_digest_dynamic(struct Struct_Obj_Entry *, const Elf_Dyn *);
45
46/* No architecture specific notes */
47#define	arch_digest_note(obj, note)	false
48
49Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
50    const struct Struct_Obj_Entry *defobj, const struct Struct_Obj_Entry *obj,
51    const Elf_Rel *rel);
52void reloc_non_plt_self(Elf_Dyn *dynp, Elf_Addr relocbase);
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 u_long cpu_features; /* r3 */
64extern u_long cpu_features2; /* r4 */
65/* r5-r10: ifunc resolver parameters reserved for future assignment. */
66#define	call_ifunc_resolver(ptr) \
67	(((Elf_Addr (*)(uint32_t, uint32_t, uint64_t, uint64_t, uint64_t, \
68           uint64_t, uint64_t, uint64_t))ptr)((uint32_t)cpu_features, \
69           (uint32_t)cpu_features2, 0, 0, 0, 0, 0, 0))
70
71/*
72 * TLS
73 */
74
75#define round(size, align) \
76    (((size) + (align) - 1) & ~((align) - 1))
77#define calculate_first_tls_offset(size, align, offset)	\
78    TLS_TCB_SIZE
79#define calculate_tls_offset(prev_offset, prev_size, size, align, offset) \
80    round(prev_offset + prev_size, align)
81#define calculate_tls_post_size(align)  0
82
83typedef struct {
84	unsigned long ti_module;
85	unsigned long ti_offset;
86} tls_index;
87
88extern void *__tls_get_addr(tls_index* ti);
89
90extern void powerpc64_abi_variant_hook(Elf_Auxinfo **);
91#define md_abi_variant_hook(x) powerpc64_abi_variant_hook(x)
92
93#endif
94