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252b5132 | 1 | /* ELF object file format. |
250d07de | 2 | Copyright (C) 1992-2021 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 8 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
9 | any later version. |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
252b5132 RH |
21 | /* HP PA-RISC support was contributed by the Center for Software Science |
22 | at the University of Utah. */ | |
23 | ||
24 | #ifndef _OBJ_ELF_H | |
25 | #define _OBJ_ELF_H | |
26 | ||
27 | #define OBJ_ELF 1 | |
28 | ||
5110c57e HPN |
29 | /* Note that all macros in this file should be wrapped in #ifndef, for |
30 | sake of obj-multi.h which includes this file. */ | |
31 | ||
4ca72d38 | 32 | #ifndef OUTPUT_FLAVOR |
252b5132 | 33 | #define OUTPUT_FLAVOR bfd_target_elf_flavour |
4ca72d38 | 34 | #endif |
252b5132 | 35 | |
252b5132 RH |
36 | #define BYTES_IN_WORD 4 /* for now */ |
37 | #include "bfd/elf-bfd.h" | |
38 | ||
49309057 ILT |
39 | #include "targ-cpu.h" |
40 | ||
41 | #ifdef TC_ALPHA | |
a8316fe2 | 42 | #define ECOFF_DEBUGGING (alpha_flag_mdebug > 0) |
49309057 ILT |
43 | extern int alpha_flag_mdebug; |
44 | #endif | |
45 | ||
46 | /* For now, always set ECOFF_DEBUGGING for a MIPS target. */ | |
47 | #ifdef TC_MIPS | |
ecb4347a DJ |
48 | #define ECOFF_DEBUGGING mips_flag_mdebug |
49 | extern int mips_flag_mdebug; | |
49309057 ILT |
50 | #endif /* TC_MIPS */ |
51 | ||
4c63da97 AM |
52 | #ifdef OBJ_MAYBE_ECOFF |
53 | #ifndef ECOFF_DEBUGGING | |
54 | #define ECOFF_DEBUGGING 1 | |
55 | #endif | |
56 | #endif | |
57 | ||
6914be53 L |
58 | enum elf_visibility |
59 | { | |
60 | visibility_unchanged = 0, | |
61 | visibility_local, | |
62 | visibility_hidden, | |
63 | visibility_remove | |
64 | }; | |
65 | ||
66 | struct elf_versioned_name_list | |
67 | { | |
68 | char *name; | |
69 | struct elf_versioned_name_list *next; | |
70 | }; | |
71 | ||
252b5132 | 72 | /* Additional information we keep for each symbol. */ |
252b5132 RH |
73 | struct elf_obj_sy |
74 | { | |
49309057 | 75 | /* Whether the symbol has been marked as local. */ |
6914be53 L |
76 | unsigned int local : 1; |
77 | ||
78 | /* Whether the symbol has been marked for rename with @@@. */ | |
79 | unsigned int rename : 1; | |
80 | ||
81 | /* Whether the symbol has a bad version name. */ | |
82 | unsigned int bad_version : 1; | |
83 | ||
84 | /* Whether visibility of the symbol should be changed. */ | |
85 | ENUM_BITFIELD (elf_visibility) visibility : 2; | |
49309057 | 86 | |
252b5132 RH |
87 | /* Use this to keep track of .size expressions that involve |
88 | differences that we can't compute yet. */ | |
89 | expressionS *size; | |
90 | ||
6914be53 L |
91 | /* The list of names specified by the .symver directive. */ |
92 | struct elf_versioned_name_list *versioned_name; | |
49309057 ILT |
93 | |
94 | #ifdef ECOFF_DEBUGGING | |
95 | /* If we are generating ECOFF debugging information, we need some | |
96 | additional fields for each symbol. */ | |
97 | struct efdr *ecoff_file; | |
98 | struct localsym *ecoff_symbol; | |
99 | valueT ecoff_extern_size; | |
100 | #endif | |
252b5132 | 101 | }; |
252b5132 | 102 | |
a8c4d40b L |
103 | /* Match section group name, the sh_info field and the section_id |
104 | field. */ | |
105 | struct elf_section_match | |
106 | { | |
b71702f1 NC |
107 | const char * group_name; |
108 | const char * linked_to_symbol_name; | |
b71702f1 | 109 | unsigned int section_id; |
037311d1 L |
110 | unsigned int sh_info; /* ELF section information. */ |
111 | bfd_vma sh_flags; /* ELF section flags. */ | |
b71702f1 | 112 | flagword flags; |
a8c4d40b L |
113 | }; |
114 | ||
252b5132 RH |
115 | #define OBJ_SYMFIELD_TYPE struct elf_obj_sy |
116 | ||
252b5132 RH |
117 | #ifndef FALSE |
118 | #define FALSE 0 | |
119 | #define TRUE !FALSE | |
120 | #endif | |
121 | ||
5110c57e | 122 | #ifndef obj_begin |
252b5132 | 123 | #define obj_begin() elf_begin () |
5110c57e | 124 | #endif |
dbe2df79 | 125 | extern void elf_begin (void); |
252b5132 | 126 | |
199114c2 AS |
127 | #ifndef LOCAL_LABEL_PREFIX |
128 | #define LOCAL_LABEL_PREFIX '.' | |
129 | #endif | |
130 | ||
252b5132 | 131 | /* should be conditional on address size! */ |
814f6641 | 132 | #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd)) |
252b5132 | 133 | |
4ca72d38 | 134 | #ifndef S_GET_SIZE |
49309057 ILT |
135 | #define S_GET_SIZE(S) \ |
136 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size) | |
4ca72d38 AM |
137 | #endif |
138 | #ifndef S_SET_SIZE | |
252b5132 | 139 | #define S_SET_SIZE(S,V) \ |
49309057 | 140 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V)) |
4ca72d38 | 141 | #endif |
252b5132 | 142 | |
4ca72d38 | 143 | #ifndef S_GET_ALIGN |
49309057 ILT |
144 | #define S_GET_ALIGN(S) \ |
145 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value) | |
4ca72d38 AM |
146 | #endif |
147 | #ifndef S_SET_ALIGN | |
252b5132 | 148 | #define S_SET_ALIGN(S,V) \ |
49309057 | 149 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V)) |
4ca72d38 | 150 | #endif |
252b5132 | 151 | |
dbe2df79 | 152 | int elf_s_get_other (symbolS *); |
4c63da97 AM |
153 | #ifndef S_GET_OTHER |
154 | #define S_GET_OTHER(S) (elf_s_get_other (S)) | |
155 | #endif | |
156 | #ifndef S_SET_OTHER | |
252b5132 | 157 | #define S_SET_OTHER(S,V) \ |
49309057 | 158 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V)) |
4c63da97 | 159 | #endif |
252b5132 RH |
160 | |
161 | extern asection *gdb_section; | |
162 | ||
4ca72d38 | 163 | #ifndef obj_frob_file |
252b5132 | 164 | #define obj_frob_file elf_frob_file |
4ca72d38 | 165 | #endif |
dbe2df79 | 166 | extern void elf_frob_file (void); |
252b5132 | 167 | |
339681c0 L |
168 | #ifndef obj_frob_file_before_adjust |
169 | #define obj_frob_file_before_adjust elf_frob_file_before_adjust | |
170 | #endif | |
dbe2df79 | 171 | extern void elf_frob_file_before_adjust (void); |
339681c0 | 172 | |
4ca72d38 | 173 | #ifndef obj_frob_file_after_relocs |
252b5132 | 174 | #define obj_frob_file_after_relocs elf_frob_file_after_relocs |
4ca72d38 | 175 | #endif |
dbe2df79 | 176 | extern void elf_frob_file_after_relocs (void); |
252b5132 | 177 | |
07a53e5c RH |
178 | /* If the target doesn't have special processing for labels, take care of |
179 | dwarf2 output at the object file level. */ | |
180 | #ifndef tc_frob_label | |
181 | #include "dwarf2dbg.h" | |
182 | #define obj_frob_label dwarf2_emit_label | |
183 | #endif | |
184 | ||
5110c57e | 185 | #ifndef obj_app_file |
252b5132 | 186 | #define obj_app_file elf_file_symbol |
5110c57e | 187 | #endif |
c04f5787 | 188 | extern void elf_file_symbol (const char *, int); |
252b5132 | 189 | |
dbe2df79 | 190 | extern void obj_elf_section_change_hook (void); |
252b5132 | 191 | |
dbe2df79 | 192 | extern void obj_elf_section (int); |
82b8a785 | 193 | extern const char * obj_elf_section_name (void); |
dbe2df79 AM |
194 | extern void obj_elf_previous (int); |
195 | extern void obj_elf_version (int); | |
196 | extern void obj_elf_common (int); | |
197 | extern void obj_elf_data (int); | |
198 | extern void obj_elf_text (int); | |
e8cf2216 | 199 | extern void obj_elf_change_section |
a8c4d40b | 200 | (const char *, unsigned int, bfd_vma, int, struct elf_section_match *, |
a91e1603 | 201 | int, int); |
68d20676 NC |
202 | extern void obj_elf_vtable_inherit (int); |
203 | extern void obj_elf_vtable_entry (int); | |
204 | extern struct fix * obj_elf_get_vtable_inherit (void); | |
205 | extern struct fix * obj_elf_get_vtable_entry (void); | |
9440a904 RS |
206 | extern bfd_boolean obj_elf_seen_attribute |
207 | (int, unsigned int); | |
0420f52b | 208 | extern int obj_elf_vendor_attribute (int); |
252b5132 RH |
209 | |
210 | /* BFD wants to write the udata field, which is a no-no for the | |
a161fe53 | 211 | predefined section symbols in bfd/section.c. They are read-only. */ |
4ca72d38 | 212 | #ifndef obj_sec_sym_ok_for_reloc |
252b5132 | 213 | #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) |
4ca72d38 | 214 | #endif |
252b5132 | 215 | |
dbe2df79 | 216 | void elf_obj_read_begin_hook (void); |
4c63da97 AM |
217 | #ifndef obj_read_begin_hook |
218 | #define obj_read_begin_hook elf_obj_read_begin_hook | |
219 | #endif | |
220 | ||
dbe2df79 | 221 | void elf_obj_symbol_new_hook (symbolS *); |
4c63da97 AM |
222 | #ifndef obj_symbol_new_hook |
223 | #define obj_symbol_new_hook elf_obj_symbol_new_hook | |
224 | #endif | |
225 | ||
7bed8466 AM |
226 | void elf_obj_symbol_clone_hook (symbolS *, symbolS *); |
227 | #ifndef obj_symbol_clone_hook | |
228 | #define obj_symbol_clone_hook elf_obj_symbol_clone_hook | |
229 | #endif | |
230 | ||
dbe2df79 | 231 | void elf_copy_symbol_attributes (symbolS *, symbolS *); |
4ca72d38 | 232 | #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES |
8fd3e36b AM |
233 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \ |
234 | (elf_copy_symbol_attributes (DEST, SRC)) | |
4ca72d38 | 235 | #endif |
252b5132 | 236 | |
709001e9 MM |
237 | void elf_adjust_symtab (void); |
238 | #ifndef obj_adjust_symtab | |
239 | #define obj_adjust_symtab elf_adjust_symtab | |
240 | #endif | |
241 | ||
5110c57e HPN |
242 | #ifndef SEPARATE_STAB_SECTIONS |
243 | /* Avoid ifndef each separate macro setting by wrapping the whole of the | |
244 | stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS | |
245 | caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS | |
246 | and OBJ_PROCESS_STAB too, without needing the tweaks below. */ | |
247 | ||
252b5132 RH |
248 | /* Stabs go in a separate section. */ |
249 | #define SEPARATE_STAB_SECTIONS 1 | |
250 | ||
251 | /* We need 12 bytes at the start of the section to hold some initial | |
252 | information. */ | |
dbe2df79 | 253 | extern void obj_elf_init_stab_section (segT); |
252b5132 RH |
254 | #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg) |
255 | ||
252b5132 | 256 | #ifdef ECOFF_DEBUGGING |
252b5132 RH |
257 | /* We smuggle stabs in ECOFF rather than using a separate section. |
258 | The Irix linker can not handle a separate stabs section. */ | |
259 | ||
260 | #undef SEPARATE_STAB_SECTIONS | |
261 | #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING) | |
262 | ||
263 | #undef INIT_STAB_SECTION | |
264 | #define INIT_STAB_SECTION(seg) \ | |
814f6641 | 265 | ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0))) |
252b5132 | 266 | |
4ca72d38 | 267 | #undef OBJ_PROCESS_STAB |
252b5132 RH |
268 | #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \ |
269 | if (ECOFF_DEBUGGING) \ | |
270 | ecoff_stab ((seg), (what), (string), (type), (other), (desc)) | |
271 | #endif /* ECOFF_DEBUGGING */ | |
272 | ||
bf514e21 | 273 | #endif /* SEPARATE_STAB_SECTIONS not defined. */ |
5110c57e | 274 | |
dbe2df79 | 275 | extern void elf_frob_symbol (symbolS *, int *); |
252b5132 RH |
276 | #ifndef obj_frob_symbol |
277 | #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt) | |
278 | #endif | |
279 | ||
dbe2df79 | 280 | extern void elf_pop_insert (void); |
4ca72d38 | 281 | #ifndef obj_pop_insert |
252b5132 | 282 | #define obj_pop_insert() elf_pop_insert() |
4ca72d38 | 283 | #endif |
252b5132 RH |
284 | |
285 | #ifndef OBJ_MAYBE_ELF | |
ae4a729b | 286 | /* If OBJ_MAYBE_ELF then obj-multi.h will define obj_ecoff_set_ext. */ |
252b5132 | 287 | #define obj_ecoff_set_ext elf_ecoff_set_ext |
252b5132 | 288 | struct ecoff_extr; |
dbe2df79 | 289 | extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *); |
252b5132 | 290 | #endif |
3b22753a L |
291 | extern asection *elf_com_section_ptr; |
292 | extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, | |
293 | addressT size); | |
252b5132 RH |
294 | |
295 | #endif /* _OBJ_ELF_H */ |