2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1999, 2000 John D. Polstra.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
31 #ifndef RTLD_MACHDEP_H
32 #define RTLD_MACHDEP_H 1
34 #include <sys/types.h>
35 #include <machine/atomic.h>
36 #include <machine/tls.h>
38 struct Struct_Obj_Entry;
40 /* Return the address of the .dynamic section in the dynamic linker. */
41 #define rtld_dynamic(obj) \
42 ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC))
44 Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
45 const struct Struct_Obj_Entry *obj, const struct Struct_Obj_Entry *refobj,
48 #define make_function_pointer(def, defobj) \
49 ((defobj)->relocbase + (def)->st_value)
51 #define call_initfini_pointer(obj, target) \
52 (((InitFunc)(target))())
54 #define call_init_pointer(obj, target) \
55 (((InitArrFunc)(target))(main_argc, main_argv, environ))
57 extern uint32_t cpu_feature;
58 extern uint32_t cpu_feature2;
59 extern uint32_t cpu_stdext_feature;
60 extern uint32_t cpu_stdext_feature2;
61 #define call_ifunc_resolver(ptr) \
62 (((Elf_Addr (*)(uint32_t, uint32_t, uint32_t, uint32_t))(ptr))( \
63 cpu_feature, cpu_feature2, cpu_stdext_feature, cpu_stdext_feature2))
66 unsigned long ti_module;
67 unsigned long ti_offset;
70 void *___tls_get_addr(tls_index *ti) __attribute__((__regparm__(1))) __exported;
71 void *__tls_get_addr(tls_index *ti) __exported;
73 #define md_abi_variant_hook(x)
75 size_t calculate_first_tls_offset(size_t size, size_t align, size_t offset);
76 size_t calculate_tls_offset(size_t prev_offset, size_t prev_size, size_t size,
77 size_t align, size_t offset);