1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 /* 6 * Copyright (C) 2012 The Android Open Source Project 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * * Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * * Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 26 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 #ifndef LINKER_PHDR_H 33 #define LINKER_PHDR_H 34 35 /* Declarations related to the ELF program header table and segments. 36 * 37 * The design goal is to provide an API that is as close as possible 38 * to the ELF spec, and does not depend on linker-specific data 39 * structures (e.g. the exact layout of struct soinfo). 40 */ 41 42 #include "elf_traits.h" 43 44 size_t phdr_table_get_load_size(const ELF::Phdr* phdr_table, 45 size_t phdr_count, 46 ELF::Addr* min_vaddr = NULL, 47 ELF::Addr* max_vaddr = NULL); 48 49 int phdr_table_protect_segments(const ELF::Phdr* phdr_table, 50 int phdr_count, 51 ELF::Addr load_bias); 52 53 int phdr_table_unprotect_segments(const ELF::Phdr* phdr_table, 54 int phdr_count, 55 ELF::Addr load_bias); 56 57 int phdr_table_get_relro_info(const ELF::Phdr* phdr_table, 58 int phdr_count, 59 ELF::Addr load_bias, 60 ELF::Addr* relro_start, 61 ELF::Addr* relro_size); 62 63 int phdr_table_protect_gnu_relro(const ELF::Phdr* phdr_table, 64 int phdr_count, 65 ELF::Addr load_bias); 66 67 #ifdef __arm__ 68 int phdr_table_get_arm_exidx(const ELF::Phdr* phdr_table, 69 int phdr_count, 70 ELF::Addr load_bias, 71 ELF::Addr** arm_exidx, 72 unsigned* arm_exidix_count); 73 #endif 74 75 void phdr_table_get_dynamic_section(const ELF::Phdr* phdr_table, 76 int phdr_count, 77 ELF::Addr load_bias, 78 const ELF::Dyn** dynamic, 79 size_t* dynamic_count, 80 ELF::Word* dynamic_flags); 81 82 #endif /* LINKER_PHDR_H */ 83