Commit | Line | Data |
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252b5132 | 1 | /* ELF object file format. |
dbe2df79 | 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
293855c8 AM |
3 | 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011 |
4 | Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
11 | any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 RH |
23 | /* HP PA-RISC support was contributed by the Center for Software Science |
24 | at the University of Utah. */ | |
25 | ||
26 | #ifndef _OBJ_ELF_H | |
27 | #define _OBJ_ELF_H | |
28 | ||
29 | #define OBJ_ELF 1 | |
30 | ||
5110c57e HPN |
31 | /* Note that all macros in this file should be wrapped in #ifndef, for |
32 | sake of obj-multi.h which includes this file. */ | |
33 | ||
4ca72d38 | 34 | #ifndef OUTPUT_FLAVOR |
252b5132 | 35 | #define OUTPUT_FLAVOR bfd_target_elf_flavour |
4ca72d38 | 36 | #endif |
252b5132 | 37 | |
252b5132 RH |
38 | #define BYTES_IN_WORD 4 /* for now */ |
39 | #include "bfd/elf-bfd.h" | |
40 | ||
49309057 ILT |
41 | #include "targ-cpu.h" |
42 | ||
43 | #ifdef TC_ALPHA | |
a8316fe2 | 44 | #define ECOFF_DEBUGGING (alpha_flag_mdebug > 0) |
49309057 ILT |
45 | extern int alpha_flag_mdebug; |
46 | #endif | |
47 | ||
48 | /* For now, always set ECOFF_DEBUGGING for a MIPS target. */ | |
49 | #ifdef TC_MIPS | |
ecb4347a DJ |
50 | #define ECOFF_DEBUGGING mips_flag_mdebug |
51 | extern int mips_flag_mdebug; | |
49309057 ILT |
52 | #endif /* TC_MIPS */ |
53 | ||
4c63da97 AM |
54 | #ifdef OBJ_MAYBE_ECOFF |
55 | #ifndef ECOFF_DEBUGGING | |
56 | #define ECOFF_DEBUGGING 1 | |
57 | #endif | |
58 | #endif | |
59 | ||
252b5132 | 60 | /* Additional information we keep for each symbol. */ |
252b5132 RH |
61 | struct elf_obj_sy |
62 | { | |
49309057 ILT |
63 | /* Whether the symbol has been marked as local. */ |
64 | int local; | |
65 | ||
252b5132 RH |
66 | /* Use this to keep track of .size expressions that involve |
67 | differences that we can't compute yet. */ | |
68 | expressionS *size; | |
69 | ||
70 | /* The name specified by the .symver directive. */ | |
71 | char *versioned_name; | |
49309057 ILT |
72 | |
73 | #ifdef ECOFF_DEBUGGING | |
74 | /* If we are generating ECOFF debugging information, we need some | |
75 | additional fields for each symbol. */ | |
76 | struct efdr *ecoff_file; | |
77 | struct localsym *ecoff_symbol; | |
78 | valueT ecoff_extern_size; | |
79 | #endif | |
252b5132 | 80 | }; |
252b5132 RH |
81 | |
82 | #define OBJ_SYMFIELD_TYPE struct elf_obj_sy | |
83 | ||
252b5132 RH |
84 | #ifndef FALSE |
85 | #define FALSE 0 | |
86 | #define TRUE !FALSE | |
87 | #endif | |
88 | ||
5110c57e | 89 | #ifndef obj_begin |
252b5132 | 90 | #define obj_begin() elf_begin () |
5110c57e | 91 | #endif |
dbe2df79 | 92 | extern void elf_begin (void); |
252b5132 | 93 | |
199114c2 AS |
94 | #ifndef LOCAL_LABEL_PREFIX |
95 | #define LOCAL_LABEL_PREFIX '.' | |
96 | #endif | |
97 | ||
252b5132 | 98 | /* should be conditional on address size! */ |
814f6641 | 99 | #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd)) |
252b5132 | 100 | |
4ca72d38 | 101 | #ifndef S_GET_SIZE |
49309057 ILT |
102 | #define S_GET_SIZE(S) \ |
103 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size) | |
4ca72d38 AM |
104 | #endif |
105 | #ifndef S_SET_SIZE | |
252b5132 | 106 | #define S_SET_SIZE(S,V) \ |
49309057 | 107 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V)) |
4ca72d38 | 108 | #endif |
252b5132 | 109 | |
4ca72d38 | 110 | #ifndef S_GET_ALIGN |
49309057 ILT |
111 | #define S_GET_ALIGN(S) \ |
112 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value) | |
4ca72d38 AM |
113 | #endif |
114 | #ifndef S_SET_ALIGN | |
252b5132 | 115 | #define S_SET_ALIGN(S,V) \ |
49309057 | 116 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V)) |
4ca72d38 | 117 | #endif |
252b5132 | 118 | |
dbe2df79 | 119 | int elf_s_get_other (symbolS *); |
4c63da97 AM |
120 | #ifndef S_GET_OTHER |
121 | #define S_GET_OTHER(S) (elf_s_get_other (S)) | |
122 | #endif | |
123 | #ifndef S_SET_OTHER | |
252b5132 | 124 | #define S_SET_OTHER(S,V) \ |
49309057 | 125 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V)) |
4c63da97 | 126 | #endif |
252b5132 RH |
127 | |
128 | extern asection *gdb_section; | |
129 | ||
4ca72d38 | 130 | #ifndef obj_frob_file |
252b5132 | 131 | #define obj_frob_file elf_frob_file |
4ca72d38 | 132 | #endif |
dbe2df79 | 133 | extern void elf_frob_file (void); |
252b5132 | 134 | |
339681c0 L |
135 | #ifndef obj_frob_file_before_adjust |
136 | #define obj_frob_file_before_adjust elf_frob_file_before_adjust | |
137 | #endif | |
dbe2df79 | 138 | extern void elf_frob_file_before_adjust (void); |
339681c0 | 139 | |
4ca72d38 | 140 | #ifndef obj_frob_file_after_relocs |
252b5132 | 141 | #define obj_frob_file_after_relocs elf_frob_file_after_relocs |
4ca72d38 | 142 | #endif |
dbe2df79 | 143 | extern void elf_frob_file_after_relocs (void); |
252b5132 | 144 | |
07a53e5c RH |
145 | /* If the target doesn't have special processing for labels, take care of |
146 | dwarf2 output at the object file level. */ | |
147 | #ifndef tc_frob_label | |
148 | #include "dwarf2dbg.h" | |
149 | #define obj_frob_label dwarf2_emit_label | |
150 | #endif | |
151 | ||
5110c57e | 152 | #ifndef obj_app_file |
252b5132 | 153 | #define obj_app_file elf_file_symbol |
5110c57e | 154 | #endif |
c04f5787 | 155 | extern void elf_file_symbol (const char *, int); |
252b5132 | 156 | |
dbe2df79 | 157 | extern void obj_elf_section_change_hook (void); |
252b5132 | 158 | |
dbe2df79 | 159 | extern void obj_elf_section (int); |
52b010e4 | 160 | extern char * obj_elf_section_name (void); |
dbe2df79 AM |
161 | extern void obj_elf_previous (int); |
162 | extern void obj_elf_version (int); | |
163 | extern void obj_elf_common (int); | |
164 | extern void obj_elf_data (int); | |
165 | extern void obj_elf_text (int); | |
e8cf2216 | 166 | extern void obj_elf_change_section |
01e1a5bc | 167 | (const char *, int, bfd_vma, int, const char *, int, int); |
dbe2df79 AM |
168 | extern struct fix *obj_elf_vtable_inherit (int); |
169 | extern struct fix *obj_elf_vtable_entry (int); | |
252b5132 RH |
170 | |
171 | /* BFD wants to write the udata field, which is a no-no for the | |
a161fe53 | 172 | predefined section symbols in bfd/section.c. They are read-only. */ |
4ca72d38 | 173 | #ifndef obj_sec_sym_ok_for_reloc |
252b5132 | 174 | #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) |
4ca72d38 | 175 | #endif |
252b5132 | 176 | |
dbe2df79 | 177 | void elf_obj_read_begin_hook (void); |
4c63da97 AM |
178 | #ifndef obj_read_begin_hook |
179 | #define obj_read_begin_hook elf_obj_read_begin_hook | |
180 | #endif | |
181 | ||
dbe2df79 | 182 | void elf_obj_symbol_new_hook (symbolS *); |
4c63da97 AM |
183 | #ifndef obj_symbol_new_hook |
184 | #define obj_symbol_new_hook elf_obj_symbol_new_hook | |
185 | #endif | |
186 | ||
dbe2df79 | 187 | void elf_copy_symbol_attributes (symbolS *, symbolS *); |
4ca72d38 | 188 | #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES |
8fd3e36b AM |
189 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \ |
190 | (elf_copy_symbol_attributes (DEST, SRC)) | |
4ca72d38 | 191 | #endif |
252b5132 | 192 | |
709001e9 MM |
193 | void elf_adjust_symtab (void); |
194 | #ifndef obj_adjust_symtab | |
195 | #define obj_adjust_symtab elf_adjust_symtab | |
196 | #endif | |
197 | ||
5110c57e HPN |
198 | #ifndef SEPARATE_STAB_SECTIONS |
199 | /* Avoid ifndef each separate macro setting by wrapping the whole of the | |
200 | stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS | |
201 | caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS | |
202 | and OBJ_PROCESS_STAB too, without needing the tweaks below. */ | |
203 | ||
252b5132 RH |
204 | /* Stabs go in a separate section. */ |
205 | #define SEPARATE_STAB_SECTIONS 1 | |
206 | ||
207 | /* We need 12 bytes at the start of the section to hold some initial | |
208 | information. */ | |
dbe2df79 | 209 | extern void obj_elf_init_stab_section (segT); |
252b5132 RH |
210 | #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg) |
211 | ||
252b5132 | 212 | #ifdef ECOFF_DEBUGGING |
252b5132 RH |
213 | /* We smuggle stabs in ECOFF rather than using a separate section. |
214 | The Irix linker can not handle a separate stabs section. */ | |
215 | ||
216 | #undef SEPARATE_STAB_SECTIONS | |
217 | #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING) | |
218 | ||
219 | #undef INIT_STAB_SECTION | |
220 | #define INIT_STAB_SECTION(seg) \ | |
814f6641 | 221 | ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0))) |
252b5132 | 222 | |
4ca72d38 | 223 | #undef OBJ_PROCESS_STAB |
252b5132 RH |
224 | #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \ |
225 | if (ECOFF_DEBUGGING) \ | |
226 | ecoff_stab ((seg), (what), (string), (type), (other), (desc)) | |
227 | #endif /* ECOFF_DEBUGGING */ | |
228 | ||
bf514e21 | 229 | #endif /* SEPARATE_STAB_SECTIONS not defined. */ |
5110c57e | 230 | |
dbe2df79 | 231 | extern void elf_frob_symbol (symbolS *, int *); |
252b5132 RH |
232 | #ifndef obj_frob_symbol |
233 | #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt) | |
234 | #endif | |
235 | ||
dbe2df79 | 236 | extern void elf_pop_insert (void); |
4ca72d38 | 237 | #ifndef obj_pop_insert |
252b5132 | 238 | #define obj_pop_insert() elf_pop_insert() |
4ca72d38 | 239 | #endif |
252b5132 RH |
240 | |
241 | #ifndef OBJ_MAYBE_ELF | |
ae4a729b | 242 | /* If OBJ_MAYBE_ELF then obj-multi.h will define obj_ecoff_set_ext. */ |
252b5132 | 243 | #define obj_ecoff_set_ext elf_ecoff_set_ext |
252b5132 | 244 | struct ecoff_extr; |
dbe2df79 | 245 | extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *); |
252b5132 | 246 | #endif |
3b22753a L |
247 | extern asection *elf_com_section_ptr; |
248 | extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, | |
249 | addressT size); | |
252b5132 RH |
250 | |
251 | #endif /* _OBJ_ELF_H */ |