rtld_machdep.h revision 50476
1/*- 2 * Copyright (c) 1999 John D. Polstra. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/libexec/rtld-elf/amd64/rtld_machdep.h 50476 1999-08-28 00:22:10Z peter $ 27 */ 28 29#ifndef RTLD_MACHDEP_H 30#define RTLD_MACHDEP_H 1 31 32/* Return the address of the .dynamic section in the dynamic linker. */ 33#define rtld_dynamic(obj) \ 34 ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC)) 35 36/* Fixup the jump slot at "where" to transfer control to "target". */ 37#define reloc_jmpslot(where, target) \ 38 do { \ 39 dbg("reloc_jmpslot: *%p = %p", (void *)(where), \ 40 (void *)(target)); \ 41 (*(Elf_Addr *)(where) = (Elf_Addr)(target)); \ 42 } while (0) 43 44#endif 45