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Diffstat (limited to 'linker/linker_phdr.h')
| -rw-r--r-- | linker/linker_phdr.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/linker/linker_phdr.h b/linker/linker_phdr.h new file mode 100644 index 0000000..d542e46 --- /dev/null +++ b/linker/linker_phdr.h @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#ifndef LINKER_PHDR_H +#define LINKER_PHDR_H + +/* Declarations related to the ELF program header table and segments. + * + * The design goal is to provide an API that is as close as possible + * to the ELF spec, and does not depend on linker-specific data + * structures (e.g. the exact layout of struct soinfo). + */ + +#include "linker.h" + +/* See linker_phdr.c for all usage documentation */ + +int +phdr_table_load(int fd, + Elf32_Addr phdr_offset, + Elf32_Half phdr_num, + void** phdr_mmap, + Elf32_Addr* phdr_size, + const Elf32_Phdr** phdr_table); + +void +phdr_table_unload(void* phdr_mmap, Elf32_Addr phdr_memsize); + +Elf32_Addr +phdr_table_get_load_size(const Elf32_Phdr* phdr_table, + int phdr_count); + +int +phdr_table_reserve_memory(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr required_base, + void** load_start, + Elf32_Addr* load_size, + Elf32_Addr* load_bias); + +int +phdr_table_load_segments(const Elf32_Phdr* phdr_table, + int phdr_count, + void* load_start, + Elf32_Addr load_size, + Elf32_Addr load_bias, + int fd); + +int +phdr_table_protect_segments(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias); + +int +phdr_table_unprotect_segments(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias); + +int +phdr_table_protect_gnu_relro(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias); + +int +phdr_table_unprotect_gnu_relro(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias); + +const Elf32_Phdr* +phdr_table_get_loaded_phdr(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias); + +#ifdef ANDROID_ARM_LINKER +int +phdr_table_get_arm_exidx(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias, + Elf32_Addr** arm_exidx, + unsigned* arm_exidix_count); +#endif + +Elf32_Addr* +phdr_table_get_dynamic_section(const Elf32_Phdr* phdr_table, + int phdr_count, + Elf32_Addr load_bias); + +#endif /* LINKER_PHDR_H */ |