rtld_machdep.h revision 309061
1/*- 2 * Copyright (c) 1999, 2000 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: stable/10/libexec/rtld-elf/ia64/rtld_machdep.h 309061 2016-11-23 17:48:43Z kib $ 27 */ 28 29#ifndef RTLD_MACHDEP_H 30#define RTLD_MACHDEP_H 1 31 32#include <sys/types.h> 33#include <machine/atomic.h> 34 35/* 36 * Macros for cracking ia64 function pointers. 37 */ 38struct fptr { 39 Elf_Addr target; 40 Elf_Addr gp; 41}; 42 43#define FPTR_TARGET(f) (((struct fptr *) (f))->target) 44#define FPTR_GP(f) (((struct fptr *) (f))->gp) 45 46/* Return the address of the .dynamic section in the dynamic linker. */ 47#define rtld_dynamic(obj) (&_DYNAMIC) 48 49struct Struct_Obj_Entry; 50 51Elf_Addr reloc_jmpslot(Elf_Addr *, Elf_Addr, const struct Struct_Obj_Entry *, 52 const struct Struct_Obj_Entry *, const Elf_Rel *); 53void *make_function_pointer(const Elf_Sym *, const struct Struct_Obj_Entry *); 54void call_initfini_pointer(const struct Struct_Obj_Entry *, Elf_Addr); 55void call_init_pointer(const struct Struct_Obj_Entry *, Elf_Addr); 56 57#define call_ifunc_resolver(ptr) \ 58 (((Elf_Addr (*)(void))ptr)()) 59 60#define TLS_TCB_SIZE 16 61 62#define round(size, align) \ 63 (((size) + (align) - 1) & ~((align) - 1)) 64#define calculate_first_tls_offset(size, align) \ 65 round(TLS_TCB_SIZE, align) 66#define calculate_tls_offset(prev_offset, prev_size, size, align) \ 67 round(prev_offset + prev_size, align) 68#define calculate_tls_end(off, size) ((off) + (size)) 69 70extern void *__tls_get_addr(unsigned long module, unsigned long offset); 71 72#define RTLD_DEFAULT_STACK_PF_EXEC 0 73#define RTLD_DEFAULT_STACK_EXEC 0 74 75#define RTLD_INIT_PAGESIZES_EARLY 1 76 77#endif 78