Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format. |
b3adc24a | 2 | Copyright (C) 1992-2020 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 | ||
252b5132 | 58 | /* Additional information we keep for each symbol. */ |
252b5132 RH |
59 | struct elf_obj_sy |
60 | { | |
49309057 ILT |
61 | /* Whether the symbol has been marked as local. */ |
62 | int local; | |
63 | ||
252b5132 RH |
64 | /* Use this to keep track of .size expressions that involve |
65 | differences that we can't compute yet. */ | |
66 | expressionS *size; | |
67 | ||
68 | /* The name specified by the .symver directive. */ | |
69 | char *versioned_name; | |
49309057 ILT |
70 | |
71 | #ifdef ECOFF_DEBUGGING | |
72 | /* If we are generating ECOFF debugging information, we need some | |
73 | additional fields for each symbol. */ | |
74 | struct efdr *ecoff_file; | |
75 | struct localsym *ecoff_symbol; | |
76 | valueT ecoff_extern_size; | |
77 | #endif | |
252b5132 | 78 | }; |
252b5132 | 79 | |
a8c4d40b L |
80 | /* Match section group name, the sh_info field and the section_id |
81 | field. */ | |
82 | struct elf_section_match | |
83 | { | |
84 | const char *group_name; | |
b7d07216 | 85 | const char *linked_to_symbol_name; |
a8c4d40b L |
86 | unsigned int info; |
87 | unsigned int section_id; | |
88 | flagword flags; | |
89 | }; | |
90 | ||
252b5132 RH |
91 | #define OBJ_SYMFIELD_TYPE struct elf_obj_sy |
92 | ||
252b5132 RH |
93 | #ifndef FALSE |
94 | #define FALSE 0 | |
95 | #define TRUE !FALSE | |
96 | #endif | |
97 | ||
5110c57e | 98 | #ifndef obj_begin |
252b5132 | 99 | #define obj_begin() elf_begin () |
5110c57e | 100 | #endif |
dbe2df79 | 101 | extern void elf_begin (void); |
252b5132 | 102 | |
199114c2 AS |
103 | #ifndef LOCAL_LABEL_PREFIX |
104 | #define LOCAL_LABEL_PREFIX '.' | |
105 | #endif | |
106 | ||
252b5132 | 107 | /* should be conditional on address size! */ |
814f6641 | 108 | #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd)) |
252b5132 | 109 | |
4ca72d38 | 110 | #ifndef S_GET_SIZE |
49309057 ILT |
111 | #define S_GET_SIZE(S) \ |
112 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size) | |
4ca72d38 AM |
113 | #endif |
114 | #ifndef S_SET_SIZE | |
252b5132 | 115 | #define S_SET_SIZE(S,V) \ |
49309057 | 116 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V)) |
4ca72d38 | 117 | #endif |
252b5132 | 118 | |
4ca72d38 | 119 | #ifndef S_GET_ALIGN |
49309057 ILT |
120 | #define S_GET_ALIGN(S) \ |
121 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value) | |
4ca72d38 AM |
122 | #endif |
123 | #ifndef S_SET_ALIGN | |
252b5132 | 124 | #define S_SET_ALIGN(S,V) \ |
49309057 | 125 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V)) |
4ca72d38 | 126 | #endif |
252b5132 | 127 | |
dbe2df79 | 128 | int elf_s_get_other (symbolS *); |
4c63da97 AM |
129 | #ifndef S_GET_OTHER |
130 | #define S_GET_OTHER(S) (elf_s_get_other (S)) | |
131 | #endif | |
132 | #ifndef S_SET_OTHER | |
252b5132 | 133 | #define S_SET_OTHER(S,V) \ |
49309057 | 134 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V)) |
4c63da97 | 135 | #endif |
252b5132 RH |
136 | |
137 | extern asection *gdb_section; | |
138 | ||
4ca72d38 | 139 | #ifndef obj_frob_file |
252b5132 | 140 | #define obj_frob_file elf_frob_file |
4ca72d38 | 141 | #endif |
dbe2df79 | 142 | extern void elf_frob_file (void); |
252b5132 | 143 | |
339681c0 L |
144 | #ifndef obj_frob_file_before_adjust |
145 | #define obj_frob_file_before_adjust elf_frob_file_before_adjust | |
146 | #endif | |
dbe2df79 | 147 | extern void elf_frob_file_before_adjust (void); |
339681c0 | 148 | |
4ca72d38 | 149 | #ifndef obj_frob_file_after_relocs |
252b5132 | 150 | #define obj_frob_file_after_relocs elf_frob_file_after_relocs |
4ca72d38 | 151 | #endif |
dbe2df79 | 152 | extern void elf_frob_file_after_relocs (void); |
252b5132 | 153 | |
07a53e5c RH |
154 | /* If the target doesn't have special processing for labels, take care of |
155 | dwarf2 output at the object file level. */ | |
156 | #ifndef tc_frob_label | |
157 | #include "dwarf2dbg.h" | |
158 | #define obj_frob_label dwarf2_emit_label | |
159 | #endif | |
160 | ||
5110c57e | 161 | #ifndef obj_app_file |
252b5132 | 162 | #define obj_app_file elf_file_symbol |
5110c57e | 163 | #endif |
c04f5787 | 164 | extern void elf_file_symbol (const char *, int); |
252b5132 | 165 | |
dbe2df79 | 166 | extern void obj_elf_section_change_hook (void); |
252b5132 | 167 | |
dbe2df79 | 168 | extern void obj_elf_section (int); |
82b8a785 | 169 | extern const char * obj_elf_section_name (void); |
dbe2df79 AM |
170 | extern void obj_elf_previous (int); |
171 | extern void obj_elf_version (int); | |
172 | extern void obj_elf_common (int); | |
173 | extern void obj_elf_data (int); | |
174 | extern void obj_elf_text (int); | |
e8cf2216 | 175 | extern void obj_elf_change_section |
a8c4d40b | 176 | (const char *, unsigned int, bfd_vma, int, struct elf_section_match *, |
a91e1603 | 177 | int, int); |
68d20676 NC |
178 | extern void obj_elf_vtable_inherit (int); |
179 | extern void obj_elf_vtable_entry (int); | |
180 | extern struct fix * obj_elf_get_vtable_inherit (void); | |
181 | extern struct fix * obj_elf_get_vtable_entry (void); | |
9440a904 RS |
182 | extern bfd_boolean obj_elf_seen_attribute |
183 | (int, unsigned int); | |
0420f52b | 184 | extern int obj_elf_vendor_attribute (int); |
252b5132 RH |
185 | |
186 | /* BFD wants to write the udata field, which is a no-no for the | |
a161fe53 | 187 | predefined section symbols in bfd/section.c. They are read-only. */ |
4ca72d38 | 188 | #ifndef obj_sec_sym_ok_for_reloc |
252b5132 | 189 | #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) |
4ca72d38 | 190 | #endif |
252b5132 | 191 | |
dbe2df79 | 192 | void elf_obj_read_begin_hook (void); |
4c63da97 AM |
193 | #ifndef obj_read_begin_hook |
194 | #define obj_read_begin_hook elf_obj_read_begin_hook | |
195 | #endif | |
196 | ||
dbe2df79 | 197 | void elf_obj_symbol_new_hook (symbolS *); |
4c63da97 AM |
198 | #ifndef obj_symbol_new_hook |
199 | #define obj_symbol_new_hook elf_obj_symbol_new_hook | |
200 | #endif | |
201 | ||
dbe2df79 | 202 | void elf_copy_symbol_attributes (symbolS *, symbolS *); |
4ca72d38 | 203 | #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES |
8fd3e36b AM |
204 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \ |
205 | (elf_copy_symbol_attributes (DEST, SRC)) | |
4ca72d38 | 206 | #endif |
252b5132 | 207 | |
709001e9 MM |
208 | void elf_adjust_symtab (void); |
209 | #ifndef obj_adjust_symtab | |
210 | #define obj_adjust_symtab elf_adjust_symtab | |
211 | #endif | |
212 | ||
5110c57e HPN |
213 | #ifndef SEPARATE_STAB_SECTIONS |
214 | /* Avoid ifndef each separate macro setting by wrapping the whole of the | |
215 | stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS | |
216 | caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS | |
217 | and OBJ_PROCESS_STAB too, without needing the tweaks below. */ | |
218 | ||
252b5132 RH |
219 | /* Stabs go in a separate section. */ |
220 | #define SEPARATE_STAB_SECTIONS 1 | |
221 | ||
222 | /* We need 12 bytes at the start of the section to hold some initial | |
223 | information. */ | |
dbe2df79 | 224 | extern void obj_elf_init_stab_section (segT); |
252b5132 RH |
225 | #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg) |
226 | ||
252b5132 | 227 | #ifdef ECOFF_DEBUGGING |
252b5132 RH |
228 | /* We smuggle stabs in ECOFF rather than using a separate section. |
229 | The Irix linker can not handle a separate stabs section. */ | |
230 | ||
231 | #undef SEPARATE_STAB_SECTIONS | |
232 | #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING) | |
233 | ||
234 | #undef INIT_STAB_SECTION | |
235 | #define INIT_STAB_SECTION(seg) \ | |
814f6641 | 236 | ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0))) |
252b5132 | 237 | |
4ca72d38 | 238 | #undef OBJ_PROCESS_STAB |
252b5132 RH |
239 | #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \ |
240 | if (ECOFF_DEBUGGING) \ | |
241 | ecoff_stab ((seg), (what), (string), (type), (other), (desc)) | |
242 | #endif /* ECOFF_DEBUGGING */ | |
243 | ||
bf514e21 | 244 | #endif /* SEPARATE_STAB_SECTIONS not defined. */ |
5110c57e | 245 | |
dbe2df79 | 246 | extern void elf_frob_symbol (symbolS *, int *); |
252b5132 RH |
247 | #ifndef obj_frob_symbol |
248 | #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt) | |
249 | #endif | |
250 | ||
dbe2df79 | 251 | extern void elf_pop_insert (void); |
4ca72d38 | 252 | #ifndef obj_pop_insert |
252b5132 | 253 | #define obj_pop_insert() elf_pop_insert() |
4ca72d38 | 254 | #endif |
252b5132 RH |
255 | |
256 | #ifndef OBJ_MAYBE_ELF | |
ae4a729b | 257 | /* If OBJ_MAYBE_ELF then obj-multi.h will define obj_ecoff_set_ext. */ |
252b5132 | 258 | #define obj_ecoff_set_ext elf_ecoff_set_ext |
252b5132 | 259 | struct ecoff_extr; |
dbe2df79 | 260 | extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *); |
252b5132 | 261 | #endif |
3b22753a L |
262 | extern asection *elf_com_section_ptr; |
263 | extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, | |
264 | addressT size); | |
252b5132 RH |
265 | |
266 | #endif /* _OBJ_ELF_H */ |