1 /* ELF object file format.
2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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 #ifndef TARGET_SYMBOL_FIELDS
90 #define TARGET_SYMBOL_FIELDS ELF_TARGET_SYMBOL_FIELDS
93 /* #include "targ-cpu.h" */
101 #define obj_begin() elf_begin ()
103 extern void elf_begin PARAMS ((void));
105 /* should be conditional on address size! */
106 #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd))
109 #define S_GET_SIZE(S) \
110 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
113 #define S_SET_SIZE(S,V) \
114 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
118 #define S_GET_ALIGN(S) \
119 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
122 #define S_SET_ALIGN(S,V) \
123 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
126 int elf_s_get_other PARAMS ((symbolS *));
128 #define S_GET_OTHER(S) (elf_s_get_other (S))
131 #define S_SET_OTHER(S,V) \
132 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
135 extern asection *gdb_section;
137 #ifndef obj_frob_file
138 #define obj_frob_file elf_frob_file
140 extern void elf_frob_file PARAMS ((void));
142 #ifndef obj_frob_file_before_adjust
143 #define obj_frob_file_before_adjust elf_frob_file_before_adjust
145 extern void elf_frob_file_before_adjust PARAMS ((void));
147 #ifndef obj_frob_file_after_relocs
148 #define obj_frob_file_after_relocs elf_frob_file_after_relocs
150 extern void elf_frob_file_after_relocs PARAMS ((void));
153 #define obj_app_file elf_file_symbol
155 extern void elf_file_symbol PARAMS ((const char *));
157 extern void obj_elf_section_change_hook PARAMS ((void));
159 extern void obj_elf_section PARAMS ((int));
160 extern void obj_elf_previous PARAMS ((int));
161 extern void obj_elf_version PARAMS ((int));
162 extern void obj_elf_common PARAMS ((int));
163 extern void obj_elf_data PARAMS ((int));
164 extern void obj_elf_text PARAMS ((int));
165 extern struct fix *obj_elf_vtable_inherit PARAMS ((int));
166 extern struct fix *obj_elf_vtable_entry PARAMS ((int));
168 /* BFD wants to write the udata field, which is a no-no for the
169 globally defined sections. */
170 #ifndef obj_sec_sym_ok_for_reloc
171 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
174 void elf_obj_read_begin_hook PARAMS ((void));
175 #ifndef obj_read_begin_hook
176 #define obj_read_begin_hook elf_obj_read_begin_hook
179 void elf_obj_symbol_new_hook PARAMS ((symbolS *));
180 #ifndef obj_symbol_new_hook
181 #define obj_symbol_new_hook elf_obj_symbol_new_hook
184 void elf_copy_symbol_attributes PARAMS ((symbolS *, symbolS *));
185 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
186 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
187 (elf_copy_symbol_attributes (DEST, SRC))
190 #ifndef SEPARATE_STAB_SECTIONS
191 /* Avoid ifndef each separate macro setting by wrapping the whole of the
192 stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
193 caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
194 and OBJ_PROCESS_STAB too, without needing the tweaks below. */
196 /* Stabs go in a separate section. */
197 #define SEPARATE_STAB_SECTIONS 1
199 /* We need 12 bytes at the start of the section to hold some initial
201 extern void obj_elf_init_stab_section PARAMS ((segT));
202 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
204 #ifdef ECOFF_DEBUGGING
205 /* We smuggle stabs in ECOFF rather than using a separate section.
206 The Irix linker can not handle a separate stabs section. */
208 #undef SEPARATE_STAB_SECTIONS
209 #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
211 #undef INIT_STAB_SECTION
212 #define INIT_STAB_SECTION(seg) \
213 ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
215 #undef OBJ_PROCESS_STAB
216 #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
217 if (ECOFF_DEBUGGING) \
218 ecoff_stab ((seg), (what), (string), (type), (other), (desc))
219 #endif /* ECOFF_DEBUGGING */
221 #endif /* SEPARATE_STAB_SECTIONS not defined. */
223 extern void elf_frob_symbol PARAMS ((symbolS *, int *));
224 #ifndef obj_frob_symbol
225 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
228 extern void elf_pop_insert PARAMS ((void));
229 #ifndef obj_pop_insert
230 #define obj_pop_insert() elf_pop_insert()
233 #ifndef OBJ_MAYBE_ELF
234 #define obj_ecoff_set_ext elf_ecoff_set_ext
235 #ifdef ANSI_PROTOTYPES
238 extern void elf_ecoff_set_ext PARAMS ((symbolS *, struct ecoff_extr *));
241 #endif /* _OBJ_ELF_H */