1 /* ELF object file format.
2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2006 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, 51 Franklin Street - Fifth Floor, 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
37 #define BYTES_IN_WORD 4 /* for now */
38 #include "bfd/elf-bfd.h"
43 #define ECOFF_DEBUGGING (alpha_flag_mdebug > 0)
44 extern int alpha_flag_mdebug
;
47 /* For now, always set ECOFF_DEBUGGING for a MIPS target. */
49 #define ECOFF_DEBUGGING mips_flag_mdebug
50 extern int mips_flag_mdebug
;
53 #ifdef OBJ_MAYBE_ECOFF
54 #ifndef ECOFF_DEBUGGING
55 #define ECOFF_DEBUGGING 1
59 /* Additional information we keep for each symbol. */
62 /* Whether the symbol has been marked as local. */
65 /* Use this to keep track of .size expressions that involve
66 differences that we can't compute yet. */
69 /* The name specified by the .symver directive. */
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
;
81 #define OBJ_SYMFIELD_TYPE struct elf_obj_sy
83 /* Symbol fields used by the ELF back end. */
84 #define ELF_TARGET_SYMBOL_FIELDS unsigned int local:1;
86 /* Don't change this; change ELF_TARGET_SYMBOL_FIELDS instead. */
87 #ifndef TARGET_SYMBOL_FIELDS
88 #define TARGET_SYMBOL_FIELDS ELF_TARGET_SYMBOL_FIELDS
97 #define obj_begin() elf_begin ()
99 extern void elf_begin (void);
101 /* should be conditional on address size! */
102 #define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd))
105 #define S_GET_SIZE(S) \
106 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
109 #define S_SET_SIZE(S,V) \
110 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
114 #define S_GET_ALIGN(S) \
115 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
118 #define S_SET_ALIGN(S,V) \
119 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
122 int elf_s_get_other (symbolS
*);
124 #define S_GET_OTHER(S) (elf_s_get_other (S))
127 #define S_SET_OTHER(S,V) \
128 (elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
131 extern asection
*gdb_section
;
133 #ifndef obj_frob_file
134 #define obj_frob_file elf_frob_file
136 extern void elf_frob_file (void);
138 #ifndef obj_frob_file_before_adjust
139 #define obj_frob_file_before_adjust elf_frob_file_before_adjust
141 extern void elf_frob_file_before_adjust (void);
143 #ifndef obj_frob_file_after_relocs
144 #define obj_frob_file_after_relocs elf_frob_file_after_relocs
146 extern void elf_frob_file_after_relocs (void);
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
156 #define obj_app_file elf_file_symbol
158 extern void elf_file_symbol (const char *, int);
160 extern void obj_elf_section_change_hook (void);
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);
168 extern void obj_elf_change_section
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);
173 /* BFD wants to write the udata field, which is a no-no for the
174 predefined section symbols in bfd/section.c. They are read-only. */
175 #ifndef obj_sec_sym_ok_for_reloc
176 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
179 void elf_obj_read_begin_hook (void);
180 #ifndef obj_read_begin_hook
181 #define obj_read_begin_hook elf_obj_read_begin_hook
184 void elf_obj_symbol_new_hook (symbolS
*);
185 #ifndef obj_symbol_new_hook
186 #define obj_symbol_new_hook elf_obj_symbol_new_hook
189 void elf_copy_symbol_attributes (symbolS
*, symbolS
*);
190 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
191 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
192 (elf_copy_symbol_attributes (DEST, SRC))
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. */
201 /* Stabs go in a separate section. */
202 #define SEPARATE_STAB_SECTIONS 1
204 /* We need 12 bytes at the start of the section to hold some initial
206 extern void obj_elf_init_stab_section (segT
);
207 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
209 #ifdef ECOFF_DEBUGGING
210 /* We smuggle stabs in ECOFF rather than using a separate section.
211 The Irix linker can not handle a separate stabs section. */
213 #undef SEPARATE_STAB_SECTIONS
214 #define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
216 #undef INIT_STAB_SECTION
217 #define INIT_STAB_SECTION(seg) \
218 ((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
220 #undef OBJ_PROCESS_STAB
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 */
226 #endif /* SEPARATE_STAB_SECTIONS not defined. */
228 extern void elf_frob_symbol (symbolS
*, int *);
229 #ifndef obj_frob_symbol
230 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
233 extern void elf_pop_insert (void);
234 #ifndef obj_pop_insert
235 #define obj_pop_insert() elf_pop_insert()
238 #ifndef OBJ_MAYBE_ELF
239 #define obj_ecoff_set_ext elf_ecoff_set_ext
241 extern void elf_ecoff_set_ext (symbolS
*, struct ecoff_extr
*);
243 extern asection
*elf_com_section_ptr
;
244 extern symbolS
* elf_common_parse (int ignore ATTRIBUTE_UNUSED
, symbolS
*symbolP
,
247 #endif /* _OBJ_ELF_H */
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