1 /* ELF object file format.
2 Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
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
9 the Free Software Foundation; either version 2, or (at your option)
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.
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
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 /* HP PA-RISC support was contributed by the Center for Software Science
24 at the University of Utah. */
31 /* Note that all macros in this file should be wrapped in #ifndef, for
32 sake of obj-multi.h which includes this file. */
35 #define OUTPUT_FLAVOR bfd_target_elf_flavour
40 #define BYTES_IN_WORD 4 /* for now */
41 #include "bfd/elf-bfd.h"
46 #define ECOFF_DEBUGGING alpha_flag_mdebug
47 extern int alpha_flag_mdebug
;
50 /* For now, always set ECOFF_DEBUGGING for a MIPS target. */
53 #define ECOFF_DEBUGGING 0
55 #define ECOFF_DEBUGGING 1
56 #endif /* MIPS_STABS_ELF */
59 #ifdef OBJ_MAYBE_ECOFF
60 #ifndef ECOFF_DEBUGGING
61 #define ECOFF_DEBUGGING 1
65 /* Additional information we keep for each symbol. */
68 /* Whether the symbol has been marked as local. */
71 /* Use this to keep track of .size expressions that involve
72 differences that we can't compute yet. */
75 /* The name specified by the .symver directive. */
78 #ifdef ECOFF_DEBUGGING
79 /* If we are generating ECOFF debugging information, we need some
80 additional fields for each symbol. */
81 struct efdr
*ecoff_file
;
82 struct localsym
*ecoff_symbol
;
83 valueT ecoff_extern_size
;
87 #define OBJ_SYMFIELD_TYPE struct elf_obj_sy
95 #define obj_begin() elf_begin ()
97 extern void elf_begin
PARAMS ((void));
99 /* should be conditional on address size! */
100 #define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
103 #define S_GET_SIZE(S) \
104 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
107 #define S_SET_SIZE(S,V) \
108 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
112 #define S_GET_ALIGN(S) \
113 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
116 #define S_SET_ALIGN(S,V) \
117 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
120 int elf_s_get_other
PARAMS ((symbolS
*));
122 #define S_GET_OTHER(S) (elf_s_get_other (S))
125 #define S_SET_OTHER(S,V) \
126 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
129 extern asection
*gdb_section
;
131 #ifndef obj_frob_file
132 #define obj_frob_file elf_frob_file
134 extern void elf_frob_file
PARAMS ((void));
136 #ifndef obj_frob_file_after_relocs
137 #define obj_frob_file_after_relocs elf_frob_file_after_relocs
139 extern void elf_frob_file_after_relocs
PARAMS ((void));
142 #define obj_app_file elf_file_symbol
144 extern void elf_file_symbol
PARAMS ((const char *));
146 extern void obj_elf_section_change_hook
PARAMS ((void));
148 extern void obj_elf_section
PARAMS ((int));
149 extern void obj_elf_previous
PARAMS ((int));
150 extern void obj_elf_version
PARAMS ((int));
151 extern void obj_elf_common
PARAMS ((int));
152 extern void obj_elf_data
PARAMS ((int));
153 extern void obj_elf_text
PARAMS ((int));
154 extern struct fix
*obj_elf_vtable_inherit
PARAMS ((int));
155 extern struct fix
*obj_elf_vtable_entry
PARAMS ((int));
157 /* BFD wants to write the udata field, which is a no-no for the
158 globally defined sections. */
159 #ifndef obj_sec_sym_ok_for_reloc
160 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
163 void elf_obj_read_begin_hook
PARAMS ((void));
164 #ifndef obj_read_begin_hook
165 #define obj_read_begin_hook elf_obj_read_begin_hook
168 void elf_obj_symbol_new_hook
PARAMS ((symbolS
*));
169 #ifndef obj_symbol_new_hook
170 #define obj_symbol_new_hook elf_obj_symbol_new_hook
173 /* When setting one symbol equal to another, by default we probably
174 want them to have the same "size", whatever it means in the current
176 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
177 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
180 struct elf_obj_sy *srcelf = symbol_get_obj (SRC); \
181 struct elf_obj_sy *destelf = symbol_get_obj (DEST); \
184 if (destelf->size == NULL) \
186 (expressionS *) xmalloc (sizeof (expressionS)); \
187 *destelf->size = *srcelf->size; \
191 if (destelf->size != NULL) \
192 free (destelf->size); \
193 destelf->size = NULL; \
195 S_SET_SIZE ((DEST), S_GET_SIZE (SRC)); \
196 S_SET_OTHER ((DEST), S_GET_OTHER (SRC)); \
201 #ifndef SEPARATE_STAB_SECTIONS
202 /* Avoid ifndef each separate macro setting by wrapping the whole of the
203 stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
204 caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
205 and OBJ_PROCESS_STAB too, without needing the tweaks below. */
207 /* Stabs go in a separate section. */
208 #define SEPARATE_STAB_SECTIONS 1
210 /* We need 12 bytes at the start of the section to hold some initial
212 extern void obj_elf_init_stab_section
PARAMS ((segT
));
213 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
215 #ifdef ECOFF_DEBUGGING
216 /* We smuggle stabs in ECOFF rather than using a separate section.
217 The Irix linker can not handle a separate stabs section. */
219 #undef SEPARATE_STAB_SECTIONS
220 #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
222 #undef INIT_STAB_SECTION
223 #define INIT_STAB_SECTION(seg) \
224 ((void)(ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
226 #undef OBJ_PROCESS_STAB
227 #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
228 if (ECOFF_DEBUGGING) \
229 ecoff_stab ((seg), (what), (string), (type), (other), (desc))
230 #endif /* ECOFF_DEBUGGING */
232 #endif /* SEPARATE_STAB_SECTIONS not defined. */
234 extern void elf_frob_symbol
PARAMS ((symbolS
*, int *));
235 #ifndef obj_frob_symbol
236 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
239 extern void elf_pop_insert
PARAMS ((void));
240 #ifndef obj_pop_insert
241 #define obj_pop_insert() elf_pop_insert()
244 #ifndef OBJ_MAYBE_ELF
245 #define obj_ecoff_set_ext elf_ecoff_set_ext
246 #ifdef ANSI_PROTOTYPES
249 extern void elf_ecoff_set_ext
PARAMS ((symbolS
*, struct ecoff_extr
*));
252 #endif /* _OBJ_ELF_H */