1 /* Backend hook signatures internal interface for libebl. 2 Copyright (C) 2000,2001,2002,2004,2005,2006,2007,2008 Red Hat, Inc. 3 This file is part of Red Hat elfutils. 4 5 Red Hat elfutils is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by the 7 Free Software Foundation; version 2 of the License. 8 9 Red Hat elfutils is distributed in the hope that it will be useful, but 10 WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 General Public License for more details. 13 14 You should have received a copy of the GNU General Public License along 15 with Red Hat elfutils; if not, write to the Free Software Foundation, 16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 17 18 In addition, as a special exception, Red Hat, Inc. gives You the 19 additional right to link the code of Red Hat elfutils with code licensed 20 under any Open Source Initiative certified open source license 21 (http://www.opensource.org/licenses/index.php) which requires the 22 distribution of source code with any binary distribution and to 23 distribute linked combinations of the two. Non-GPL Code permitted under 24 this exception must only link to the code of Red Hat elfutils through 25 those well defined interfaces identified in the file named EXCEPTION 26 found in the source code files (the "Approved Interfaces"). The files 27 of Non-GPL Code may instantiate templates or use macros or inline 28 functions from the Approved Interfaces without causing the resulting 29 work to be covered by the GNU General Public License. Only Red Hat, 30 Inc. may make changes or additions to the list of Approved Interfaces. 31 Red Hat's grant of this exception is conditioned upon your not adding 32 any new exceptions. If you wish to add a new Approved Interface or 33 exception, please contact Red Hat. You must obey the GNU General Public 34 License in all respects for all of the Red Hat elfutils code and other 35 code used in conjunction with Red Hat elfutils except the Non-GPL Code 36 covered by this exception. If you modify this file, you may extend this 37 exception to your version of the file, but you are not obligated to do 38 so. If you do not wish to provide this exception without modification, 39 you must delete this exception statement from your version and license 40 this file solely under the GPL without exception. 41 42 Red Hat elfutils is an included package of the Open Invention Network. 43 An included package of the Open Invention Network is a package for which 44 Open Invention Network licensees cross-license their patents. No patent 45 license is granted, either expressly or impliedly, by designation as an 46 included package. Should you wish to participate in the Open Invention 47 Network licensing program, please visit www.openinventionnetwork.com 48 <http://www.openinventionnetwork.com>. */ 49 50 /* Return symbol representaton of object file type. */ 51 const char *EBLHOOK(object_type_name) (int, char *, size_t); 52 53 /* Return symbolic representation of relocation type. */ 54 const char *EBLHOOK(reloc_type_name) (int, char *, size_t); 55 56 /* Check relocation type. */ 57 bool EBLHOOK(reloc_type_check) (int); 58 59 /* Check if relocation type is for simple absolute relocations. */ 60 Elf_Type EBLHOOK(reloc_simple_type) (Ebl *, int); 61 62 /* Check relocation type use. */ 63 bool EBLHOOK(reloc_valid_use) (Elf *, int); 64 65 /* Return true if the symbol type is that referencing the GOT. */ 66 bool EBLHOOK(gotpc_reloc_check) (Elf *, int); 67 68 /* Return symbolic representation of segment type. */ 69 const char *EBLHOOK(segment_type_name) (int, char *, size_t); 70 71 /* Return symbolic representation of section type. */ 72 const char *EBLHOOK(section_type_name) (int, char *, size_t); 73 74 /* Return section name. */ 75 const char *EBLHOOK(section_name) (int, int, char *, size_t); 76 77 /* Return next machine flag name. */ 78 const char *EBLHOOK(machine_flag_name) (GElf_Word *); 79 80 /* Check whether machine flags are valid. */ 81 bool EBLHOOK(machine_flag_check) (GElf_Word); 82 83 /* Check whether SHF_MASKPROC flag bits are valid. */ 84 bool EBLHOOK(machine_section_flag_check) (GElf_Xword); 85 86 /* Check whether the section with the given index, header, and name 87 is a special machine section that is valid despite a combination 88 of flags or other details that are not generically valid. */ 89 bool EBLHOOK(check_special_section) (Ebl *, int, 90 const GElf_Shdr *, const char *); 91 92 /* Return symbolic representation of symbol type. */ 93 const char *EBLHOOK(symbol_type_name) (int, char *, size_t); 94 95 /* Return symbolic representation of symbol binding. */ 96 const char *EBLHOOK(symbol_binding_name) (int, char *, size_t); 97 98 /* Return symbolic representation of dynamic tag. */ 99 const char *EBLHOOK(dynamic_tag_name) (int64_t, char *, size_t); 100 101 /* Check dynamic tag. */ 102 bool EBLHOOK(dynamic_tag_check) (int64_t); 103 104 /* Combine section header flags values. */ 105 GElf_Word EBLHOOK(sh_flags_combine) (GElf_Word, GElf_Word); 106 107 /* Return symbolic representation of OS ABI. */ 108 const char *EBLHOOK(osabi_name) (int, char *, size_t); 109 110 /* Name of a note entry type for core files. */ 111 const char *EBLHOOK(core_note_type_name) (uint32_t, char *, size_t); 112 113 /* Name of a note entry type for object files. */ 114 const char *EBLHOOK(object_note_type_name) (uint32_t, char *, size_t); 115 116 /* Describe core note format. */ 117 int EBLHOOK(core_note) (GElf_Word, GElf_Word, GElf_Word *, size_t *, 118 const Ebl_Register_Location **, 119 size_t *, const Ebl_Core_Item **); 120 121 /* Handle object file note. */ 122 bool EBLHOOK(object_note) (const char *, uint32_t, uint32_t, const char *); 123 124 /* Check object attribute. */ 125 bool EBLHOOK(check_object_attribute) (Ebl *, const char *, int, uint64_t, 126 const char **, const char **); 127 128 /* Describe auxv element type. */ 129 int EBLHOOK(auxv_info) (GElf_Xword, const char **, const char **); 130 131 /* Check section name for being that of a debug informatino section. */ 132 bool EBLHOOK(debugscn_p) (const char *); 133 134 /* Check whether given relocation is a copy relocation. */ 135 bool EBLHOOK(copy_reloc_p) (int); 136 137 /* Check whether given relocation is a no-op relocation. */ 138 bool EBLHOOK(none_reloc_p) (int); 139 140 /* Check whether given relocation is a relative relocation. */ 141 bool EBLHOOK(relative_reloc_p) (int); 142 143 /* Check whether given symbol's value is ok despite normal checks. */ 144 bool EBLHOOK(check_special_symbol) (Elf *, GElf_Ehdr *, const GElf_Sym *, 145 const char *, const GElf_Shdr *); 146 147 /* Check if backend uses a bss PLT in this file. */ 148 bool EBLHOOK(bss_plt_p) (Elf *, GElf_Ehdr *); 149 150 /* Return location expression to find return value given the 151 DW_AT_type DIE of a DW_TAG_subprogram DIE. */ 152 int EBLHOOK(return_value_location) (Dwarf_Die *functypedie, 153 const Dwarf_Op **locp); 154 155 /* Return register name information. */ 156 ssize_t EBLHOOK(register_info) (Ebl *ebl, 157 int regno, char *name, size_t namelen, 158 const char **prefix, const char **setname, 159 int *bits, int *type); 160 161 /* Return system call ABI registers. */ 162 int EBLHOOK(syscall_abi) (Ebl *ebl, int *sp, int *pc, 163 int *callno, int args[6]); 164 165 /* Disassembler function. */ 166 int EBLHOOK(disasm) (const uint8_t **startp, const uint8_t *end, 167 GElf_Addr addr, const char *fmt, DisasmOutputCB_t outcb, 168 DisasmGetSymCB_t symcb, void *outcbarg, void *symcbarg); 169 170 171 /* Destructor for ELF backend handle. */ 172 void EBLHOOK(destr) (struct ebl *); 173