1 /* ELF object file format.
2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
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 > 0)
46 extern int alpha_flag_mdebug
;
49 /* For now, always set ECOFF_DEBUGGING for a MIPS target. */
51 #define ECOFF_DEBUGGING mips_flag_mdebug
52 extern int mips_flag_mdebug
;
55 #ifdef OBJ_MAYBE_ECOFF
56 #ifndef ECOFF_DEBUGGING
57 #define ECOFF_DEBUGGING 1
61 /* Additional information we keep for each symbol. */
64 /* Whether the symbol has been marked as local. */
67 /* Use this to keep track of .size expressions that involve
68 differences that we can't compute yet. */
71 /* The name specified by the .symver directive. */
74 #ifdef ECOFF_DEBUGGING
75 /* If we are generating ECOFF debugging information, we need some
76 additional fields for each symbol. */
77 struct efdr
*ecoff_file
;
78 struct localsym
*ecoff_symbol
;
79 valueT ecoff_extern_size
;
83 #define OBJ_SYMFIELD_TYPE struct elf_obj_sy
85 /* Symbol fields used by the ELF back end. */
86 #define ELF_TARGET_SYMBOL_FIELDS int local:1;
88 /* Don't change this; change ELF_TARGET_SYMBOL_FIELDS instead. */
89 #define TARGET_SYMBOL_FIELDS ELF_TARGET_SYMBOL_FIELDS
91 /* #include "targ-cpu.h" */
99 #define obj_begin() elf_begin ()
101 extern void elf_begin
PARAMS ((void));
103 /* should be conditional on address size! */
104 #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd))
107 #define S_GET_SIZE(S) \
108 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
111 #define S_SET_SIZE(S,V) \
112 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
116 #define S_GET_ALIGN(S) \
117 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
120 #define S_SET_ALIGN(S,V) \
121 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
124 int elf_s_get_other
PARAMS ((symbolS
*));
126 #define S_GET_OTHER(S) (elf_s_get_other (S))
129 #define S_SET_OTHER(S,V) \
130 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
133 extern asection
*gdb_section
;
135 #ifndef obj_frob_file
136 #define obj_frob_file elf_frob_file
138 extern void elf_frob_file
PARAMS ((void));
140 #ifndef obj_frob_file_before_adjust
141 #define obj_frob_file_before_adjust elf_frob_file_before_adjust
143 extern void elf_frob_file_before_adjust
PARAMS ((void));
145 #ifndef obj_frob_file_after_relocs
146 #define obj_frob_file_after_relocs elf_frob_file_after_relocs
148 extern void elf_frob_file_after_relocs
PARAMS ((void));
151 #define obj_app_file elf_file_symbol
153 extern void elf_file_symbol
PARAMS ((const char *));
155 extern void obj_elf_section_change_hook
PARAMS ((void));
157 extern void obj_elf_section
PARAMS ((int));
158 extern void obj_elf_previous
PARAMS ((int));
159 extern void obj_elf_version
PARAMS ((int));
160 extern void obj_elf_common
PARAMS ((int));
161 extern void obj_elf_data
PARAMS ((int));
162 extern void obj_elf_text
PARAMS ((int));
163 extern struct fix
*obj_elf_vtable_inherit
PARAMS ((int));
164 extern struct fix
*obj_elf_vtable_entry
PARAMS ((int));
166 /* BFD wants to write the udata field, which is a no-no for the
167 globally defined sections. */
168 #ifndef obj_sec_sym_ok_for_reloc
169 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
172 void elf_obj_read_begin_hook
PARAMS ((void));
173 #ifndef obj_read_begin_hook
174 #define obj_read_begin_hook elf_obj_read_begin_hook
177 void elf_obj_symbol_new_hook
PARAMS ((symbolS
*));
178 #ifndef obj_symbol_new_hook
179 #define obj_symbol_new_hook elf_obj_symbol_new_hook
182 void elf_copy_symbol_attributes
PARAMS ((symbolS
*, symbolS
*));
183 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
184 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
185 (elf_copy_symbol_attributes (DEST, SRC))
188 #ifndef SEPARATE_STAB_SECTIONS
189 /* Avoid ifndef each separate macro setting by wrapping the whole of the
190 stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
191 caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
192 and OBJ_PROCESS_STAB too, without needing the tweaks below. */
194 /* Stabs go in a separate section. */
195 #define SEPARATE_STAB_SECTIONS 1
197 /* We need 12 bytes at the start of the section to hold some initial
199 extern void obj_elf_init_stab_section
PARAMS ((segT
));
200 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
202 #ifdef ECOFF_DEBUGGING
203 /* We smuggle stabs in ECOFF rather than using a separate section.
204 The Irix linker can not handle a separate stabs section. */
206 #undef SEPARATE_STAB_SECTIONS
207 #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
209 #undef INIT_STAB_SECTION
210 #define INIT_STAB_SECTION(seg) \
211 ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
213 #undef OBJ_PROCESS_STAB
214 #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
215 if (ECOFF_DEBUGGING) \
216 ecoff_stab ((seg), (what), (string), (type), (other), (desc))
217 #endif /* ECOFF_DEBUGGING */
219 #endif /* SEPARATE_STAB_SECTIONS not defined. */
221 extern void elf_frob_symbol
PARAMS ((symbolS
*, int *));
222 #ifndef obj_frob_symbol
223 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
226 extern void elf_pop_insert
PARAMS ((void));
227 #ifndef obj_pop_insert
228 #define obj_pop_insert() elf_pop_insert()
231 #ifndef OBJ_MAYBE_ELF
232 #define obj_ecoff_set_ext elf_ecoff_set_ext
233 #ifdef ANSI_PROTOTYPES
236 extern void elf_ecoff_set_ext
PARAMS ((symbolS
*, struct ecoff_extr
*));
239 #endif /* _OBJ_ELF_H */