1 /* Backend hook signatures internal interface for libebl. 2 Copyright (C) 2000-2011 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) (const char *, uint32_t, 115 char *, size_t); 116 117 /* Describe core note format. */ 118 int EBLHOOK(core_note) (const GElf_Nhdr *, const char *, 119 GElf_Word *, size_t *, const Ebl_Register_Location **, 120 size_t *, const Ebl_Core_Item **); 121 122 /* Handle object file note. */ 123 bool EBLHOOK(object_note) (const char *, uint32_t, uint32_t, const char *); 124 125 /* Check object attribute. */ 126 bool EBLHOOK(check_object_attribute) (Ebl *, const char *, int, uint64_t, 127 const char **, const char **); 128 129 /* Describe auxv element type. */ 130 int EBLHOOK(auxv_info) (GElf_Xword, const char **, const char **); 131 132 /* Check section name for being that of a debug informatino section. */ 133 bool EBLHOOK(debugscn_p) (const char *); 134 135 /* Check whether given relocation is a copy relocation. */ 136 bool EBLHOOK(copy_reloc_p) (int); 137 138 /* Check whether given relocation is a no-op relocation. */ 139 bool EBLHOOK(none_reloc_p) (int); 140 141 /* Check whether given relocation is a relative relocation. */ 142 bool EBLHOOK(relative_reloc_p) (int); 143 144 /* Check whether given symbol's value is ok despite normal checks. */ 145 bool EBLHOOK(check_special_symbol) (Elf *, GElf_Ehdr *, const GElf_Sym *, 146 const char *, const GElf_Shdr *); 147 148 /* Check whether only valid bits are set on the st_other symbol flag. 149 Standard ST_VISIBILITY have already been masked off. */ 150 bool EBLHOOK(check_st_other_bits) (unsigned char st_other); 151 152 /* Check if backend uses a bss PLT in this file. */ 153 bool EBLHOOK(bss_plt_p) (Elf *, GElf_Ehdr *); 154 155 /* Return location expression to find return value given the 156 DW_AT_type DIE of a DW_TAG_subprogram DIE. */ 157 int EBLHOOK(return_value_location) (Dwarf_Die *functypedie, 158 const Dwarf_Op **locp); 159 160 /* Return register name information. */ 161 ssize_t EBLHOOK(register_info) (Ebl *ebl, 162 int regno, char *name, size_t namelen, 163 const char **prefix, const char **setname, 164 int *bits, int *type); 165 166 /* Return system call ABI registers. */ 167 int EBLHOOK(syscall_abi) (Ebl *ebl, int *sp, int *pc, 168 int *callno, int args[6]); 169 170 /* Disassembler function. */ 171 int EBLHOOK(disasm) (const uint8_t **startp, const uint8_t *end, 172 GElf_Addr addr, const char *fmt, DisasmOutputCB_t outcb, 173 DisasmGetSymCB_t symcb, void *outcbarg, void *symcbarg); 174 175 /* Supply the machine-specific state of CFI before CIE initial programs. */ 176 int EBLHOOK(abi_cfi) (Ebl *ebl, Dwarf_CIE *abi_info); 177 178 /* Destructor for ELF backend handle. */ 179 void EBLHOOK(destr) (struct ebl *); 180
