1107572Sgrehan/*- 2107572Sgrehan * Copyright (c) 1999, 2000 John D. Polstra. 3107572Sgrehan * All rights reserved. 4107572Sgrehan * 5107572Sgrehan * Redistribution and use in source and binary forms, with or without 6107572Sgrehan * modification, are permitted provided that the following conditions 7107572Sgrehan * are met: 8107572Sgrehan * 1. Redistributions of source code must retain the above copyright 9107572Sgrehan * notice, this list of conditions and the following disclaimer. 10107572Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 11107572Sgrehan * notice, this list of conditions and the following disclaimer in the 12107572Sgrehan * documentation and/or other materials provided with the distribution. 13107572Sgrehan * 14107572Sgrehan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15107572Sgrehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16107572Sgrehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17107572Sgrehan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18107572Sgrehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19107572Sgrehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20107572Sgrehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21107572Sgrehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22107572Sgrehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23107572Sgrehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24107572Sgrehan * SUCH DAMAGE. 25107572Sgrehan * 26107572Sgrehan * $FreeBSD$ 27107572Sgrehan */ 28107572Sgrehan 29107572Sgrehan#ifndef RTLD_MACHDEP_H 30107572Sgrehan#define RTLD_MACHDEP_H 1 31107572Sgrehan 32115396Skan#include <sys/types.h> 33107572Sgrehan#include <machine/atomic.h> 34107572Sgrehan 35107572Sgrehanstruct Struct_Obj_Entry; 36107572Sgrehan 37107572Sgrehan/* Return the address of the .dynamic section in the dynamic linker. */ 38107572Sgrehan#define rtld_dynamic(obj) (&_DYNAMIC) 39107572Sgrehan 40107572SgrehanElf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target, 41107572Sgrehan const struct Struct_Obj_Entry *defobj, 42107572Sgrehan const struct Struct_Obj_Entry *obj, 43107572Sgrehan const Elf_Rel *rel); 44107572Sgrehan 45107572Sgrehan#define make_function_pointer(def, defobj) \ 46107572Sgrehan ((defobj)->relocbase + (def)->st_value) 47107572Sgrehan 48107572Sgrehan#define call_initfini_pointer(obj, target) \ 49107572Sgrehan (((InitFunc)(target))()) 50107572Sgrehan 51233694Skib#define call_init_pointer(obj, target) \ 52233694Skib (((InitArrFunc)(target))(main_argc, main_argv, environ)) 53233694Skib 54107572Sgrehan/* 55115396Skan * Lazy binding entry point, called via PLT. 56107572Sgrehan */ 57107572Sgrehanvoid _rtld_bind_start(void); 58107572Sgrehan 59107572Sgrehan/* 60137122Sssouhlal * TLS 61137122Sssouhlal */ 62137122Sssouhlal 63137122Sssouhlal#define TLS_TP_OFFSET 0x7000 64137122Sssouhlal#define TLS_DTV_OFFSET 0x8000 65209885Snwhitehorn#define TLS_TCB_SIZE 16 66137122Sssouhlal 67133133Sdfr#define round(size, align) \ 68133133Sdfr (((size) + (align) - 1) & ~((align) - 1)) 69133133Sdfr#define calculate_first_tls_offset(size, align) \ 70209885Snwhitehorn round(16, align) 71133133Sdfr#define calculate_tls_offset(prev_offset, prev_size, size, align) \ 72133133Sdfr round(prev_offset + prev_size, align) 73133133Sdfr#define calculate_tls_end(off, size) ((off) + (size)) 74133133Sdfr 75133133Sdfrtypedef struct { 76133133Sdfr unsigned long ti_module; 77133133Sdfr unsigned long ti_offset; 78133133Sdfr} tls_index; 79133133Sdfr 80133133Sdfrextern void *__tls_get_addr(tls_index* ti); 81133133Sdfr 82217851Skib#define RTLD_DEFAULT_STACK_PF_EXEC PF_X 83217851Skib#define RTLD_DEFAULT_STACK_EXEC PROT_EXEC 84217851Skib 85107572Sgrehan#endif 86