1178476Sjb/*- 2178476Sjb * Copyright (c) 1999, 2000 John D. Polstra. 3178476Sjb * All rights reserved. 4178476Sjb * 5178476Sjb * Redistribution and use in source and binary forms, with or without 6178476Sjb * modification, are permitted provided that the following conditions 7178476Sjb * are met: 8178476Sjb * 1. Redistributions of source code must retain the above copyright 9178476Sjb * notice, this list of conditions and the following disclaimer. 10178476Sjb * 2. Redistributions in binary form must reproduce the above copyright 11178476Sjb * notice, this list of conditions and the following disclaimer in the 12178476Sjb * documentation and/or other materials provided with the distribution. 13178476Sjb * 14178476Sjb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15178476Sjb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16178476Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17178476Sjb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18178476Sjb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19178476Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20178476Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21178476Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22178476Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23178476Sjb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24178476Sjb * SUCH DAMAGE. 25178476Sjb * 26178476Sjb * $FreeBSD: releng/11.0/libexec/rtld-elf/i386/rtld_machdep.h 293066 2016-01-03 04:32:02Z imp $ 27178476Sjb */ 28178476Sjb 29178476Sjb#ifndef RTLD_MACHDEP_H 30178476Sjb#define RTLD_MACHDEP_H 1 31178476Sjb 32178476Sjb#include <sys/types.h> 33178476Sjb#include <machine/atomic.h> 34178476Sjb 35178476Sjbstruct Struct_Obj_Entry; 36178476Sjb 37178476Sjb/* Return the address of the .dynamic section in the dynamic linker. */ 38178476Sjb#define rtld_dynamic(obj) \ 39178476Sjb ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC)) 40178476Sjb 41178476Sjb/* Fixup the jump slot at "where" to transfer control to "target". */ 42178476Sjbstatic inline Elf_Addr 43178476Sjbreloc_jmpslot(Elf_Addr *where, Elf_Addr target, 44178476Sjb const struct Struct_Obj_Entry *obj, 45178476Sjb const struct Struct_Obj_Entry *refobj, const Elf_Rel *rel) 46178476Sjb{ 47178476Sjb#ifdef dbg 48178476Sjb dbg("reloc_jmpslot: *%p = %p", (void *)(where), 49178476Sjb (void *)(target)); 50178476Sjb#endif 51178476Sjb (*(Elf_Addr *)(where) = (Elf_Addr)(target)); 52178476Sjb return target; 53178476Sjb} 54 55#define make_function_pointer(def, defobj) \ 56 ((defobj)->relocbase + (def)->st_value) 57 58#define call_initfini_pointer(obj, target) \ 59 (((InitFunc)(target))()) 60 61#define call_init_pointer(obj, target) \ 62 (((InitArrFunc)(target))(main_argc, main_argv, environ)) 63 64#define round(size, align) \ 65 (((size) + (align) - 1) & ~((align) - 1)) 66#define calculate_first_tls_offset(size, align) \ 67 round(size, align) 68#define calculate_tls_offset(prev_offset, prev_size, size, align) \ 69 round((prev_offset) + (size), align) 70#define calculate_tls_end(off, size) (off) 71 72typedef struct { 73 unsigned long ti_module; 74 unsigned long ti_offset; 75} tls_index; 76 77void *___tls_get_addr(tls_index *ti) __attribute__((__regparm__(1))) __exported; 78void *__tls_get_addr(tls_index *ti) __exported; 79 80#define RTLD_DEFAULT_STACK_PF_EXEC PF_X 81#define RTLD_DEFAULT_STACK_EXEC PROT_EXEC 82 83#define md_abi_variant_hook(x) 84 85#endif 86