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
22 /* HP PA-RISC support was contributed by the Center for Software Science
23 at the University of Utah. */
30 /* Note that all macros in this file should be wrapped in #ifndef, for
31 sake of obj-multi.h which includes this file. */
34 #define OUTPUT_FLAVOR bfd_target_elf_flavour
39 #define BYTES_IN_WORD 4 /* for now */
40 #include "bfd/elf-bfd.h"
45 #define ECOFF_DEBUGGING alpha_flag_mdebug
46 extern int alpha_flag_mdebug
;
49 /* For now, always set ECOFF_DEBUGGING for a MIPS target. */
52 #define ECOFF_DEBUGGING 0
54 #define ECOFF_DEBUGGING 1
55 #endif /* MIPS_STABS_ELF */
58 #ifdef OBJ_MAYBE_ECOFF
59 #ifndef ECOFF_DEBUGGING
60 #define ECOFF_DEBUGGING 1
64 /* Additional information we keep for each symbol. */
67 /* Whether the symbol has been marked as local. */
70 /* Use this to keep track of .size expressions that involve
71 differences that we can't compute yet. */
74 /* The name specified by the .symver directive. */
77 #ifdef ECOFF_DEBUGGING
78 /* If we are generating ECOFF debugging information, we need some
79 additional fields for each symbol. */
80 struct efdr
*ecoff_file
;
81 struct localsym
*ecoff_symbol
;
82 valueT ecoff_extern_size
;
86 #define OBJ_SYMFIELD_TYPE struct elf_obj_sy
94 #define obj_begin() elf_begin ()
96 extern void elf_begin
PARAMS ((void));
98 /* should be conditional on address size! */
99 #define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
102 #define S_GET_SIZE(S) \
103 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
106 #define S_SET_SIZE(S,V) \
107 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
111 #define S_GET_ALIGN(S) \
112 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
115 #define S_SET_ALIGN(S,V) \
116 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
119 int elf_s_get_other
PARAMS ((symbolS
*));
121 #define S_GET_OTHER(S) (elf_s_get_other (S))
124 #define S_SET_OTHER(S,V) \
125 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
128 extern asection
*gdb_section
;
130 #ifndef obj_frob_file
131 #define obj_frob_file elf_frob_file
133 extern void elf_frob_file
PARAMS ((void));
135 #ifndef obj_frob_file_before_adjust
136 #define obj_frob_file_before_adjust elf_frob_file_before_adjust
138 extern void elf_frob_file_before_adjust
PARAMS ((void));
140 #ifndef obj_frob_file_after_relocs
141 #define obj_frob_file_after_relocs elf_frob_file_after_relocs
143 extern void elf_frob_file_after_relocs
PARAMS ((void));
146 #define obj_app_file elf_file_symbol
148 extern void elf_file_symbol
PARAMS ((const char *));
150 extern void obj_elf_section_change_hook
PARAMS ((void));
152 extern void obj_elf_section
PARAMS ((int));
153 extern void obj_elf_previous
PARAMS ((int));
154 extern void obj_elf_version
PARAMS ((int));
155 extern void obj_elf_common
PARAMS ((int));
156 extern void obj_elf_data
PARAMS ((int));
157 extern void obj_elf_text
PARAMS ((int));
158 extern struct fix
*obj_elf_vtable_inherit
PARAMS ((int));
159 extern struct fix
*obj_elf_vtable_entry
PARAMS ((int));
161 /* BFD wants to write the udata field, which is a no-no for the
162 globally defined sections. */
163 #ifndef obj_sec_sym_ok_for_reloc
164 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
167 void elf_obj_read_begin_hook
PARAMS ((void));
168 #ifndef obj_read_begin_hook
169 #define obj_read_begin_hook elf_obj_read_begin_hook
172 void elf_obj_symbol_new_hook
PARAMS ((symbolS
*));
173 #ifndef obj_symbol_new_hook
174 #define obj_symbol_new_hook elf_obj_symbol_new_hook
177 /* When setting one symbol equal to another, by default we probably
178 want them to have the same "size", whatever it means in the current
180 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
181 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
184 struct elf_obj_sy *srcelf = symbol_get_obj (SRC); \
185 struct elf_obj_sy *destelf = symbol_get_obj (DEST); \
188 if (destelf->size == NULL) \
190 (expressionS *) xmalloc (sizeof (expressionS)); \
191 *destelf->size = *srcelf->size; \
195 if (destelf->size != NULL) \
196 free (destelf->size); \
197 destelf->size = NULL; \
199 S_SET_SIZE ((DEST), S_GET_SIZE (SRC)); \
200 S_SET_OTHER ((DEST), S_GET_OTHER (SRC)); \
205 #ifndef SEPARATE_STAB_SECTIONS
206 /* Avoid ifndef each separate macro setting by wrapping the whole of the
207 stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
208 caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
209 and OBJ_PROCESS_STAB too, without needing the tweaks below. */
211 /* Stabs go in a separate section. */
212 #define SEPARATE_STAB_SECTIONS 1
214 /* We need 12 bytes at the start of the section to hold some initial
216 extern void obj_elf_init_stab_section
PARAMS ((segT
));
217 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
219 #ifdef ECOFF_DEBUGGING
220 /* We smuggle stabs in ECOFF rather than using a separate section.
221 The Irix linker can not handle a separate stabs section. */
223 #undef SEPARATE_STAB_SECTIONS
224 #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
226 #undef INIT_STAB_SECTION
227 #define INIT_STAB_SECTION(seg) \
228 ((void)(ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
230 #undef OBJ_PROCESS_STAB
231 #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
232 if (ECOFF_DEBUGGING) \
233 ecoff_stab ((seg), (what), (string), (type), (other), (desc))
234 #endif /* ECOFF_DEBUGGING */
236 #endif /* SEPARATE_STAB_SECTIONS not defined. */
238 extern void elf_frob_symbol
PARAMS ((symbolS
*, int *));
239 #ifndef obj_frob_symbol
240 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
243 extern void elf_pop_insert
PARAMS ((void));
244 #ifndef obj_pop_insert
245 #define obj_pop_insert() elf_pop_insert()
248 #ifndef OBJ_MAYBE_ELF
249 #define obj_ecoff_set_ext elf_ecoff_set_ext
250 #ifdef ANSI_PROTOTYPES
253 extern void elf_ecoff_set_ext
PARAMS ((symbolS
*, struct ecoff_extr
*));
256 #endif /* _OBJ_ELF_H */