2 * Copyright (c) 1999, 2000 John D. Polstra.
3 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
6 * Portions of this software were developed by SRI International and the
7 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
8 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
10 * Portions of this software were developed by the University of Cambridge
11 * Computer Laboratory as part of the CTSRD Project, with support from the
12 * UK Higher Education Innovation Fund (HEIF).
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #ifndef RTLD_MACHDEP_H
39 #define RTLD_MACHDEP_H 1
41 #include <sys/types.h>
42 #include <machine/atomic.h>
44 struct Struct_Obj_Entry;
46 uint64_t set_gp(struct Struct_Obj_Entry *obj);
48 /* Return the address of the .dynamic section in the dynamic linker. */
49 #define rtld_dynamic(obj) \
51 Elf_Addr _dynamic_addr; \
52 __asm __volatile("lla %0, _DYNAMIC" : "=r"(_dynamic_addr)); \
53 (const Elf_Dyn *)_dynamic_addr; \
56 Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
57 const struct Struct_Obj_Entry *defobj, const struct Struct_Obj_Entry *obj,
60 #define make_function_pointer(def, defobj) \
61 ((defobj)->relocbase + (def)->st_value)
63 #define call_initfini_pointer(obj, target) \
67 (((InitFunc)(target))()); \
68 __asm __volatile("mv gp, %0" :: "r"(old0)); \
71 #define call_init_pointer(obj, target) \
75 (((InitArrFunc)(target))(main_argc, main_argv, environ)); \
76 __asm __volatile("mv gp, %0" :: "r"(old1)); \
79 #define call_ifunc_resolver(ptr) \
80 (((Elf_Addr (*)(void))ptr)())
85 #define TLS_TP_OFFSET 0x0
86 #define TLS_DTV_OFFSET 0x800
87 #define TLS_TCB_SIZE 16
89 #define round(size, align) \
90 (((size) + (align) - 1) & ~((align) - 1))
91 #define calculate_first_tls_offset(size, align, offset) \
93 #define calculate_tls_offset(prev_offset, prev_size, size, align, offset) \
94 round(prev_offset + prev_size, align)
95 #define calculate_tls_end(off, size) ((off) + (size))
96 #define calculate_tls_post_size(align) 0
99 unsigned long ti_module;
100 unsigned long ti_offset;
103 extern void *__tls_get_addr(tls_index* ti);
105 #define RTLD_DEFAULT_STACK_PF_EXEC PF_X
106 #define RTLD_DEFAULT_STACK_EXEC PROT_EXEC
108 #define md_abi_variant_hook(x)