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573456a931
GNU and Oracle libelf implementations added support for section compression, intended to reduce the size of DWARF debug info (which might be an order of magnitude larger than the code). There are two compressed ELF section formats: 1. Old GNU - sections are renmaed to start with 'z'. Section contains a magic number, uncompressed size, and compressed data. 2. Oracle and New GNU - compressed sections use the SHF_COMPRESSED flag. The compression header contains the compression type, uncompressed size, and uncompressed alignment. The second style is preferred and this change implements only that one. Submitted by: Tiger Gao <tig@FreeBSDFoundation.org> Reviewed by: markj MFC after: 2 weeks Relnotes: Yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D24566
113 lines
5 KiB
C
113 lines
5 KiB
C
/*-
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* Copyright (c) 2006,2008 Joseph Koshy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: gelf.h 3174 2015-03-27 17:13:41Z emaste $
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*/
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#ifndef _GELF_H_
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#define _GELF_H_
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#include <libelf.h>
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typedef Elf64_Addr GElf_Addr; /* Addresses */
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typedef Elf64_Half GElf_Half; /* Half words (16 bit) */
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typedef Elf64_Off GElf_Off; /* Offsets */
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typedef Elf64_Sword GElf_Sword; /* Signed words (32 bit) */
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typedef Elf64_Sxword GElf_Sxword; /* Signed long words (64 bit) */
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typedef Elf64_Word GElf_Word; /* Unsigned words (32 bit) */
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typedef Elf64_Xword GElf_Xword; /* Unsigned long words (64 bit) */
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typedef Elf64_Chdr GElf_Chdr; /* Compressed section header */
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typedef Elf64_Dyn GElf_Dyn; /* ".dynamic" section entries */
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typedef Elf64_Ehdr GElf_Ehdr; /* ELF header */
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typedef Elf64_Phdr GElf_Phdr; /* Program header */
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typedef Elf64_Shdr GElf_Shdr; /* Section header */
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typedef Elf64_Sym GElf_Sym; /* Symbol table entries */
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typedef Elf64_Rel GElf_Rel; /* Relocation entries */
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typedef Elf64_Rela GElf_Rela; /* Relocation entries with addend */
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typedef Elf64_Cap GElf_Cap; /* SW/HW capabilities */
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typedef Elf64_Move GElf_Move; /* Move entries */
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typedef Elf64_Syminfo GElf_Syminfo; /* Symbol information */
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#define GELF_M_INFO ELF64_M_INFO
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#define GELF_M_SIZE ELF64_M_SIZE
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#define GELF_M_SYM ELF64_M_SYM
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#define GELF_R_INFO ELF64_R_INFO
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#define GELF_R_SYM ELF64_R_SYM
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#define GELF_R_TYPE ELF64_R_TYPE
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#define GELF_R_TYPE_DATA ELF64_R_TYPE_DATA
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#define GELF_R_TYPE_ID ELF64_R_TYPE_ID
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#define GELF_R_TYPE_INFO ELF64_R_TYPE_INFO
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#define GELF_ST_BIND ELF64_ST_BIND
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#define GELF_ST_INFO ELF64_ST_INFO
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#define GELF_ST_TYPE ELF64_ST_TYPE
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#define GELF_ST_VISIBILITY ELF64_ST_VISIBILITY
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#ifdef __cplusplus
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extern "C" {
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#endif
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long gelf_checksum(Elf *_elf);
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size_t gelf_fsize(Elf *_elf, Elf_Type _type, size_t _count,
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unsigned int _version);
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GElf_Chdr *gelf_getchdr(Elf_Scn *_scn, GElf_Chdr *_dst);
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int gelf_getclass(Elf *_elf);
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GElf_Dyn *gelf_getdyn(Elf_Data *_data, int _index, GElf_Dyn *_dst);
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GElf_Ehdr *gelf_getehdr(Elf *_elf, GElf_Ehdr *_dst);
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GElf_Phdr *gelf_getphdr(Elf *_elf, int _index, GElf_Phdr *_dst);
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GElf_Rel *gelf_getrel(Elf_Data *_src, int _index, GElf_Rel *_dst);
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GElf_Rela *gelf_getrela(Elf_Data *_src, int _index, GElf_Rela *_dst);
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GElf_Shdr *gelf_getshdr(Elf_Scn *_scn, GElf_Shdr *_dst);
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GElf_Sym *gelf_getsym(Elf_Data *_src, int _index, GElf_Sym *_dst);
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GElf_Sym *gelf_getsymshndx(Elf_Data *_src, Elf_Data *_shindexsrc,
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int _index, GElf_Sym *_dst, Elf32_Word *_shindexdst);
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void * gelf_newehdr(Elf *_elf, int _class);
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void * gelf_newphdr(Elf *_elf, size_t _phnum);
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int gelf_update_dyn(Elf_Data *_dst, int _index, GElf_Dyn *_src);
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int gelf_update_ehdr(Elf *_elf, GElf_Ehdr *_src);
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int gelf_update_phdr(Elf *_elf, int _index, GElf_Phdr *_src);
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int gelf_update_rel(Elf_Data *_dst, int _index, GElf_Rel *_src);
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int gelf_update_rela(Elf_Data *_dst, int _index, GElf_Rela *_src);
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int gelf_update_shdr(Elf_Scn *_dst, GElf_Shdr *_src);
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int gelf_update_sym(Elf_Data *_dst, int _index, GElf_Sym *_src);
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int gelf_update_symshndx(Elf_Data *_symdst, Elf_Data *_shindexdst,
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int _index, GElf_Sym *_symsrc, Elf32_Word _shindexsrc);
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Elf_Data *gelf_xlatetof(Elf *_elf, Elf_Data *_dst, const Elf_Data *_src, unsigned int _encode);
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Elf_Data *gelf_xlatetom(Elf *_elf, Elf_Data *_dst, const Elf_Data *_src, unsigned int _encode);
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GElf_Cap *gelf_getcap(Elf_Data *_data, int _index, GElf_Cap *_cap);
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GElf_Move *gelf_getmove(Elf_Data *_src, int _index, GElf_Move *_dst);
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GElf_Syminfo *gelf_getsyminfo(Elf_Data *_src, int _index, GElf_Syminfo *_dst);
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int gelf_update_cap(Elf_Data *_dst, int _index, GElf_Cap *_src);
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int gelf_update_move(Elf_Data *_dst, int _index, GElf_Move *_src);
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int gelf_update_syminfo(Elf_Data *_dst, int _index, GElf_Syminfo *_src);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GELF_H_ */
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