rtld_machdep.h revision 115396
145501Sjdp/*- 262801Sjdp * Copyright (c) 1999, 2000 John D. Polstra. 345501Sjdp * All rights reserved. 445501Sjdp * 545501Sjdp * Redistribution and use in source and binary forms, with or without 645501Sjdp * modification, are permitted provided that the following conditions 745501Sjdp * are met: 845501Sjdp * 1. Redistributions of source code must retain the above copyright 945501Sjdp * notice, this list of conditions and the following disclaimer. 1045501Sjdp * 2. Redistributions in binary form must reproduce the above copyright 1145501Sjdp * notice, this list of conditions and the following disclaimer in the 1245501Sjdp * documentation and/or other materials provided with the distribution. 1345501Sjdp * 1445501Sjdp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1545501Sjdp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1645501Sjdp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1745501Sjdp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1845501Sjdp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1945501Sjdp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2045501Sjdp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2145501Sjdp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2245501Sjdp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2345501Sjdp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2445501Sjdp * SUCH DAMAGE. 2545501Sjdp * 2650476Speter * $FreeBSD: head/libexec/rtld-elf/i386/rtld_machdep.h 115396 2003-05-29 22:58:26Z kan $ 2745501Sjdp */ 2845501Sjdp 2945501Sjdp#ifndef RTLD_MACHDEP_H 3045501Sjdp#define RTLD_MACHDEP_H 1 3145501Sjdp 32115396Skan#include <sys/types.h> 33115396Skan#include <machine/atomic.h> 34115396Skan 35115396Skan#define CACHE_LINE_SIZE 32 36115396Skan 3785004Sdfrstruct Struct_Obj_Entry; 3885004Sdfr 3945501Sjdp/* Return the address of the .dynamic section in the dynamic linker. */ 4045501Sjdp#define rtld_dynamic(obj) \ 4145501Sjdp ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC)) 4245501Sjdp 4348205Sjdp/* Fixup the jump slot at "where" to transfer control to "target". */ 4485004Sdfrstatic inline Elf_Addr 4585004Sdfrreloc_jmpslot(Elf_Addr *where, Elf_Addr target, 46107071Stmm const struct Struct_Obj_Entry *obj, 47107071Stmm const struct Struct_Obj_Entry *refobj, const Elf_Rel *rel) 4885004Sdfr{ 4985004Sdfr dbg("reloc_jmpslot: *%p = %p", (void *)(where), 5085004Sdfr (void *)(target)); 5185004Sdfr (*(Elf_Addr *)(where) = (Elf_Addr)(target)); 5285004Sdfr return target; 5385004Sdfr} 5448205Sjdp 5585004Sdfr#define make_function_pointer(def, defobj) \ 5685004Sdfr ((defobj)->relocbase + (def)->st_value) 5785004Sdfr 5885677Speter#define call_initfini_pointer(obj, target) \ 5985677Speter (((InitFunc)(target))()) 6085677Speter 6145501Sjdp#endif 62