127bd4146SNathan Whitehorn /*- 2e6209940SPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3e6209940SPedro F. Giffuni * 427bd4146SNathan Whitehorn * Copyright (c) 1999, 2000 John D. Polstra. 527bd4146SNathan Whitehorn * All rights reserved. 627bd4146SNathan Whitehorn * 727bd4146SNathan Whitehorn * Redistribution and use in source and binary forms, with or without 827bd4146SNathan Whitehorn * modification, are permitted provided that the following conditions 927bd4146SNathan Whitehorn * are met: 1027bd4146SNathan Whitehorn * 1. Redistributions of source code must retain the above copyright 1127bd4146SNathan Whitehorn * notice, this list of conditions and the following disclaimer. 1227bd4146SNathan Whitehorn * 2. Redistributions in binary form must reproduce the above copyright 1327bd4146SNathan Whitehorn * notice, this list of conditions and the following disclaimer in the 1427bd4146SNathan Whitehorn * documentation and/or other materials provided with the distribution. 1527bd4146SNathan Whitehorn * 1627bd4146SNathan Whitehorn * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1727bd4146SNathan Whitehorn * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1827bd4146SNathan Whitehorn * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1927bd4146SNathan Whitehorn * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2027bd4146SNathan Whitehorn * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2127bd4146SNathan Whitehorn * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2227bd4146SNathan Whitehorn * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2327bd4146SNathan Whitehorn * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2427bd4146SNathan Whitehorn * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2527bd4146SNathan Whitehorn * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2627bd4146SNathan Whitehorn * SUCH DAMAGE. 2727bd4146SNathan Whitehorn * 2827bd4146SNathan Whitehorn * $FreeBSD$ 2927bd4146SNathan Whitehorn */ 3027bd4146SNathan Whitehorn 3127bd4146SNathan Whitehorn #ifndef RTLD_MACHDEP_H 3227bd4146SNathan Whitehorn #define RTLD_MACHDEP_H 1 3327bd4146SNathan Whitehorn 3427bd4146SNathan Whitehorn #include <sys/types.h> 3527bd4146SNathan Whitehorn #include <machine/atomic.h> 3627bd4146SNathan Whitehorn 3727bd4146SNathan Whitehorn struct Struct_Obj_Entry; 3827bd4146SNathan Whitehorn 3927bd4146SNathan Whitehorn /* Return the address of the .dynamic section in the dynamic linker. */ 4027bd4146SNathan Whitehorn #define rtld_dynamic(obj) (&_DYNAMIC) 4127bd4146SNathan Whitehorn 4227bd4146SNathan Whitehorn Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target, 43e35ddbe4SKonstantin Belousov const struct Struct_Obj_Entry *defobj, const struct Struct_Obj_Entry *obj, 4427bd4146SNathan Whitehorn const Elf_Rel *rel); 45903e0ffdSAlex Richardson void reloc_non_plt_self(Elf_Dyn *dynp, Elf_Addr relocbase); 4627bd4146SNathan Whitehorn 4727bd4146SNathan Whitehorn #define make_function_pointer(def, defobj) \ 4827bd4146SNathan Whitehorn ((defobj)->relocbase + (def)->st_value) 4927bd4146SNathan Whitehorn 5027bd4146SNathan Whitehorn #define call_initfini_pointer(obj, target) \ 5127bd4146SNathan Whitehorn (((InitFunc)(target))()) 5227bd4146SNathan Whitehorn 5383aa9cc0SKonstantin Belousov #define call_init_pointer(obj, target) \ 5483aa9cc0SKonstantin Belousov (((InitArrFunc)(target))(main_argc, main_argv, environ)) 5583aa9cc0SKonstantin Belousov 564352999eSKonstantin Belousov #define call_ifunc_resolver(ptr) \ 574352999eSKonstantin Belousov (((Elf_Addr (*)(void))ptr)()) 584352999eSKonstantin Belousov 5927bd4146SNathan Whitehorn /* 6027bd4146SNathan Whitehorn * TLS 6127bd4146SNathan Whitehorn */ 6227bd4146SNathan Whitehorn 6327bd4146SNathan Whitehorn #define TLS_TP_OFFSET 0x7000 6427bd4146SNathan Whitehorn #define TLS_DTV_OFFSET 0x8000 6527bd4146SNathan Whitehorn #define TLS_TCB_SIZE 16 6627bd4146SNathan Whitehorn 6727bd4146SNathan Whitehorn #define round(size, align) \ 6827bd4146SNathan Whitehorn (((size) + (align) - 1) & ~((align) - 1)) 6927bd4146SNathan Whitehorn #define calculate_first_tls_offset(size, align) \ 7017fb2856SBrooks Davis TLS_TCB_SIZE 7127bd4146SNathan Whitehorn #define calculate_tls_offset(prev_offset, prev_size, size, align) \ 7227bd4146SNathan Whitehorn round(prev_offset + prev_size, align) 7327bd4146SNathan Whitehorn #define calculate_tls_end(off, size) ((off) + (size)) 7417fb2856SBrooks Davis #define calculate_tls_post_size(align) 0 7527bd4146SNathan Whitehorn 7627bd4146SNathan Whitehorn typedef struct { 7727bd4146SNathan Whitehorn unsigned long ti_module; 7827bd4146SNathan Whitehorn unsigned long ti_offset; 7927bd4146SNathan Whitehorn } tls_index; 8027bd4146SNathan Whitehorn 8127bd4146SNathan Whitehorn extern void *__tls_get_addr(tls_index* ti); 8227bd4146SNathan Whitehorn 83cb38d494SKonstantin Belousov #define RTLD_DEFAULT_STACK_PF_EXEC PF_X 84cb38d494SKonstantin Belousov #define RTLD_DEFAULT_STACK_EXEC PROT_EXEC 85cb38d494SKonstantin Belousov 868fd53f45SWarner Losh #define md_abi_variant_hook(x) 878fd53f45SWarner Losh 8827bd4146SNathan Whitehorn #endif 89