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, |
ae4a729b | 3 | 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 9 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
10 | any later version. |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 RH |
22 | /* HP PA-RISC support was contributed by the Center for Software Science |
23 | at the University of Utah. */ | |
24 | ||
25 | #ifndef _OBJ_ELF_H | |
26 | #define _OBJ_ELF_H | |
27 | ||
28 | #define OBJ_ELF 1 | |
29 | ||
5110c57e HPN |
30 | /* Note that all macros in this file should be wrapped in #ifndef, for |
31 | sake of obj-multi.h which includes this file. */ | |
32 | ||
4ca72d38 | 33 | #ifndef OUTPUT_FLAVOR |
252b5132 | 34 | #define OUTPUT_FLAVOR bfd_target_elf_flavour |
4ca72d38 | 35 | #endif |
252b5132 | 36 | |
252b5132 RH |
37 | #define BYTES_IN_WORD 4 /* for now */ |
38 | #include "bfd/elf-bfd.h" | |
39 | ||
49309057 ILT |
40 | #include "targ-cpu.h" |
41 | ||
42 | #ifdef TC_ALPHA | |
a8316fe2 | 43 | #define ECOFF_DEBUGGING (alpha_flag_mdebug > 0) |
49309057 ILT |
44 | extern int alpha_flag_mdebug; |
45 | #endif | |
46 | ||
47 | /* For now, always set ECOFF_DEBUGGING for a MIPS target. */ | |
48 | #ifdef TC_MIPS | |
ecb4347a DJ |
49 | #define ECOFF_DEBUGGING mips_flag_mdebug |
50 | extern int mips_flag_mdebug; | |
49309057 ILT |
51 | #endif /* TC_MIPS */ |
52 | ||
4c63da97 AM |
53 | #ifdef OBJ_MAYBE_ECOFF |
54 | #ifndef ECOFF_DEBUGGING | |
55 | #define ECOFF_DEBUGGING 1 | |
56 | #endif | |
57 | #endif | |
58 | ||
252b5132 | 59 | /* Additional information we keep for each symbol. */ |
252b5132 RH |
60 | struct elf_obj_sy |
61 | { | |
49309057 ILT |
62 | /* Whether the symbol has been marked as local. */ |
63 | int local; | |
64 | ||
252b5132 RH |
65 | /* Use this to keep track of .size expressions that involve |
66 | differences that we can't compute yet. */ | |
67 | expressionS *size; | |
68 | ||
69 | /* The name specified by the .symver directive. */ | |
70 | char *versioned_name; | |
49309057 ILT |
71 | |
72 | #ifdef ECOFF_DEBUGGING | |
73 | /* If we are generating ECOFF debugging information, we need some | |
74 | additional fields for each symbol. */ | |
75 | struct efdr *ecoff_file; | |
76 | struct localsym *ecoff_symbol; | |
77 | valueT ecoff_extern_size; | |
78 | #endif | |
252b5132 | 79 | }; |
252b5132 RH |
80 | |
81 | #define OBJ_SYMFIELD_TYPE struct elf_obj_sy | |
82 | ||
0d2bcfaf | 83 | /* Symbol fields used by the ELF back end. */ |
22772e33 | 84 | #define ELF_TARGET_SYMBOL_FIELDS unsigned int local:1; |
0d2bcfaf NC |
85 | |
86 | /* Don't change this; change ELF_TARGET_SYMBOL_FIELDS instead. */ | |
2a24298d | 87 | #ifndef TARGET_SYMBOL_FIELDS |
0d2bcfaf | 88 | #define TARGET_SYMBOL_FIELDS ELF_TARGET_SYMBOL_FIELDS |
2a24298d | 89 | #endif |
0d2bcfaf | 90 | |
252b5132 RH |
91 | #ifndef FALSE |
92 | #define FALSE 0 | |
93 | #define TRUE !FALSE | |
94 | #endif | |
95 | ||
5110c57e | 96 | #ifndef obj_begin |
252b5132 | 97 | #define obj_begin() elf_begin () |
5110c57e | 98 | #endif |
dbe2df79 | 99 | extern void elf_begin (void); |
252b5132 RH |
100 | |
101 | /* should be conditional on address size! */ | |
814f6641 | 102 | #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd)) |
252b5132 | 103 | |
4ca72d38 | 104 | #ifndef S_GET_SIZE |
49309057 ILT |
105 | #define S_GET_SIZE(S) \ |
106 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size) | |
4ca72d38 AM |
107 | #endif |
108 | #ifndef S_SET_SIZE | |
252b5132 | 109 | #define S_SET_SIZE(S,V) \ |
49309057 | 110 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V)) |
4ca72d38 | 111 | #endif |
252b5132 | 112 | |
4ca72d38 | 113 | #ifndef S_GET_ALIGN |
49309057 ILT |
114 | #define S_GET_ALIGN(S) \ |
115 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value) | |
4ca72d38 AM |
116 | #endif |
117 | #ifndef S_SET_ALIGN | |
252b5132 | 118 | #define S_SET_ALIGN(S,V) \ |
49309057 | 119 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V)) |
4ca72d38 | 120 | #endif |
252b5132 | 121 | |
dbe2df79 | 122 | int elf_s_get_other (symbolS *); |
4c63da97 AM |
123 | #ifndef S_GET_OTHER |
124 | #define S_GET_OTHER(S) (elf_s_get_other (S)) | |
125 | #endif | |
126 | #ifndef S_SET_OTHER | |
252b5132 | 127 | #define S_SET_OTHER(S,V) \ |
49309057 | 128 | (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V)) |
4c63da97 | 129 | #endif |
252b5132 RH |
130 | |
131 | extern asection *gdb_section; | |
132 | ||
4ca72d38 | 133 | #ifndef obj_frob_file |
252b5132 | 134 | #define obj_frob_file elf_frob_file |
4ca72d38 | 135 | #endif |
dbe2df79 | 136 | extern void elf_frob_file (void); |
252b5132 | 137 | |
339681c0 L |
138 | #ifndef obj_frob_file_before_adjust |
139 | #define obj_frob_file_before_adjust elf_frob_file_before_adjust | |
140 | #endif | |
dbe2df79 | 141 | extern void elf_frob_file_before_adjust (void); |
339681c0 | 142 | |
4ca72d38 | 143 | #ifndef obj_frob_file_after_relocs |
252b5132 | 144 | #define obj_frob_file_after_relocs elf_frob_file_after_relocs |
4ca72d38 | 145 | #endif |
dbe2df79 | 146 | extern void elf_frob_file_after_relocs (void); |
252b5132 | 147 | |
07a53e5c RH |
148 | /* If the target doesn't have special processing for labels, take care of |
149 | dwarf2 output at the object file level. */ | |
150 | #ifndef tc_frob_label | |
151 | #include "dwarf2dbg.h" | |
152 | #define obj_frob_label dwarf2_emit_label | |
153 | #endif | |
154 | ||
5110c57e | 155 | #ifndef obj_app_file |
252b5132 | 156 | #define obj_app_file elf_file_symbol |
5110c57e | 157 | #endif |
c04f5787 | 158 | extern void elf_file_symbol (const char *, int); |
252b5132 | 159 | |
dbe2df79 | 160 | extern void obj_elf_section_change_hook (void); |
252b5132 | 161 | |
dbe2df79 AM |
162 | extern void obj_elf_section (int); |
163 | extern void obj_elf_previous (int); | |
164 | extern void obj_elf_version (int); | |
165 | extern void obj_elf_common (int); | |
166 | extern void obj_elf_data (int); | |
167 | extern void obj_elf_text (int); | |
e8cf2216 | 168 | extern void obj_elf_change_section |
dbe2df79 AM |
169 | (const char *, int, int, int, const char *, int, int); |
170 | extern struct fix *obj_elf_vtable_inherit (int); | |
171 | extern struct fix *obj_elf_vtable_entry (int); | |
252b5132 RH |
172 | |
173 | /* BFD wants to write the udata field, which is a no-no for the | |
a161fe53 | 174 | predefined section symbols in bfd/section.c. They are read-only. */ |
4ca72d38 | 175 | #ifndef obj_sec_sym_ok_for_reloc |
252b5132 | 176 | #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) |
4ca72d38 | 177 | #endif |
252b5132 | 178 | |
dbe2df79 | 179 | void elf_obj_read_begin_hook (void); |
4c63da97 AM |
180 | #ifndef obj_read_begin_hook |
181 | #define obj_read_begin_hook elf_obj_read_begin_hook | |
182 | #endif | |
183 | ||
dbe2df79 | 184 | void elf_obj_symbol_new_hook (symbolS *); |
4c63da97 AM |
185 | #ifndef obj_symbol_new_hook |
186 | #define obj_symbol_new_hook elf_obj_symbol_new_hook | |
187 | #endif | |
188 | ||
dbe2df79 | 189 | void elf_copy_symbol_attributes (symbolS *, symbolS *); |
4ca72d38 | 190 | #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES |
8fd3e36b AM |
191 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \ |
192 | (elf_copy_symbol_attributes (DEST, SRC)) | |
4ca72d38 | 193 | #endif |
252b5132 | 194 | |
5110c57e HPN |
195 | #ifndef SEPARATE_STAB_SECTIONS |
196 | /* Avoid ifndef each separate macro setting by wrapping the whole of the | |
197 | stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS | |
198 | caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS | |
199 | and OBJ_PROCESS_STAB too, without needing the tweaks below. */ | |
200 | ||
252b5132 RH |
201 | /* Stabs go in a separate section. */ |
202 | #define SEPARATE_STAB_SECTIONS 1 | |
203 | ||
204 | /* We need 12 bytes at the start of the section to hold some initial | |
205 | information. */ | |
dbe2df79 | 206 | extern void obj_elf_init_stab_section (segT); |
252b5132 RH |
207 | #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg) |
208 | ||
252b5132 | 209 | #ifdef ECOFF_DEBUGGING |
252b5132 RH |
210 | /* We smuggle stabs in ECOFF rather than using a separate section. |
211 | The Irix linker can not handle a separate stabs section. */ | |
212 | ||
213 | #undef SEPARATE_STAB_SECTIONS | |
214 | #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING) | |
215 | ||
216 | #undef INIT_STAB_SECTION | |
217 | #define INIT_STAB_SECTION(seg) \ | |
814f6641 | 218 | ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0))) |
252b5132 | 219 | |
4ca72d38 | 220 | #undef OBJ_PROCESS_STAB |
252b5132 RH |
221 | #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \ |
222 | if (ECOFF_DEBUGGING) \ | |
223 | ecoff_stab ((seg), (what), (string), (type), (other), (desc)) | |
224 | #endif /* ECOFF_DEBUGGING */ | |
225 | ||
bf514e21 | 226 | #endif /* SEPARATE_STAB_SECTIONS not defined. */ |
5110c57e | 227 | |
dbe2df79 | 228 | extern void elf_frob_symbol (symbolS *, int *); |
252b5132 RH |
229 | #ifndef obj_frob_symbol |
230 | #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt) | |
231 | #endif | |
232 | ||
dbe2df79 | 233 | extern void elf_pop_insert (void); |
4ca72d38 | 234 | #ifndef obj_pop_insert |
252b5132 | 235 | #define obj_pop_insert() elf_pop_insert() |
4ca72d38 | 236 | #endif |
252b5132 RH |
237 | |
238 | #ifndef OBJ_MAYBE_ELF | |
ae4a729b | 239 | /* If OBJ_MAYBE_ELF then obj-multi.h will define obj_ecoff_set_ext. */ |
252b5132 | 240 | #define obj_ecoff_set_ext elf_ecoff_set_ext |
252b5132 | 241 | struct ecoff_extr; |
dbe2df79 | 242 | extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *); |
252b5132 | 243 | #endif |
3b22753a L |
244 | extern asection *elf_com_section_ptr; |
245 | extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, | |
246 | addressT size); | |
252b5132 RH |
247 | |
248 | #endif /* _OBJ_ELF_H */ |