215 lines
6 KiB
C
215 lines
6 KiB
C
/* ELF object file format.
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Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 1999
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Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* HP PA-RISC support was contributed by the Center for Software Science
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at the University of Utah. */
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#ifndef _OBJ_ELF_H
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#define _OBJ_ELF_H
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#define OBJ_ELF 1
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#ifndef OUTPUT_FLAVOR
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#define OUTPUT_FLAVOR bfd_target_elf_flavour
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#endif
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#include <bfd.h>
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#define BYTES_IN_WORD 4 /* for now */
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#include "bfd/elf-bfd.h"
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#include "targ-cpu.h"
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#ifdef TC_ALPHA
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#define ECOFF_DEBUGGING alpha_flag_mdebug
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extern int alpha_flag_mdebug;
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#endif
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/* For now, always set ECOFF_DEBUGGING for a MIPS target. */
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#ifdef TC_MIPS
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#ifdef MIPS_STABS_ELF
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#define ECOFF_DEBUGGING 0
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#else
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#define ECOFF_DEBUGGING 1
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#endif /* MIPS_STABS_ELF */
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#endif /* TC_MIPS */
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/* Additional information we keep for each symbol. */
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struct elf_obj_sy
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{
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/* Whether the symbol has been marked as local. */
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int local;
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/* Use this to keep track of .size expressions that involve
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differences that we can't compute yet. */
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expressionS *size;
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/* The name specified by the .symver directive. */
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char *versioned_name;
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#ifdef ECOFF_DEBUGGING
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/* If we are generating ECOFF debugging information, we need some
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additional fields for each symbol. */
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struct efdr *ecoff_file;
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struct localsym *ecoff_symbol;
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valueT ecoff_extern_size;
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#endif
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};
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#define OBJ_SYMFIELD_TYPE struct elf_obj_sy
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#ifndef FALSE
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#define FALSE 0
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#define TRUE !FALSE
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#endif
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#define obj_begin() elf_begin ()
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extern void elf_begin PARAMS ((void));
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/* should be conditional on address size! */
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#define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
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#ifndef S_GET_SIZE
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#define S_GET_SIZE(S) \
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(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
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#endif
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#ifndef S_SET_SIZE
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#define S_SET_SIZE(S,V) \
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(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
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#endif
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#ifndef S_GET_ALIGN
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#define S_GET_ALIGN(S) \
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(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
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#endif
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#ifndef S_SET_ALIGN
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#define S_SET_ALIGN(S,V) \
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(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
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#endif
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#define S_GET_OTHER(S) \
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(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other)
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#define S_SET_OTHER(S,V) \
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(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
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extern asection *gdb_section;
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#ifndef obj_frob_file
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#define obj_frob_file elf_frob_file
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#endif
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extern void elf_frob_file PARAMS ((void));
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#ifndef obj_frob_file_after_relocs
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#define obj_frob_file_after_relocs elf_frob_file_after_relocs
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#endif
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extern void elf_frob_file_after_relocs PARAMS ((void));
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#define obj_app_file elf_file_symbol
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extern void elf_file_symbol PARAMS ((char *));
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extern void obj_elf_section_change_hook PARAMS ((void));
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extern void obj_elf_section PARAMS ((int));
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extern void obj_elf_previous PARAMS ((int));
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extern void obj_elf_version PARAMS ((int));
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extern void obj_elf_common PARAMS ((int));
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extern void obj_elf_data PARAMS ((int));
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extern void obj_elf_text PARAMS ((int));
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/* BFD wants to write the udata field, which is a no-no for the
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globally defined sections. */
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#ifndef obj_sec_sym_ok_for_reloc
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#define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
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#endif
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/* When setting one symbol equal to another, by default we probably
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want them to have the same "size", whatever it means in the current
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context. */
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#ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
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#define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
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do \
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{ \
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struct elf_obj_sy *srcelf = symbol_get_obj (SRC); \
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struct elf_obj_sy *destelf = symbol_get_obj (DEST); \
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if (srcelf->size) \
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{ \
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if (destelf->size == NULL) \
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destelf->size = \
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(expressionS *) xmalloc (sizeof (expressionS)); \
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*destelf->size = *srcelf->size; \
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} \
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else \
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{ \
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if (destelf->size != NULL) \
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free (destelf->size); \
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destelf->size = NULL; \
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} \
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S_SET_SIZE ((DEST), S_GET_SIZE (SRC)); \
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S_SET_OTHER ((DEST), S_GET_OTHER (SRC)); \
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} \
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while (0)
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#endif
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/* Stabs go in a separate section. */
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#define SEPARATE_STAB_SECTIONS 1
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/* We need 12 bytes at the start of the section to hold some initial
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information. */
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extern void obj_elf_init_stab_section PARAMS ((segT));
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#define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
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#ifdef ECOFF_DEBUGGING
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/* We smuggle stabs in ECOFF rather than using a separate section.
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The Irix linker can not handle a separate stabs section. */
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#undef SEPARATE_STAB_SECTIONS
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#define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
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#undef INIT_STAB_SECTION
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#define INIT_STAB_SECTION(seg) \
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((void)(ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
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#undef OBJ_PROCESS_STAB
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#define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
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if (ECOFF_DEBUGGING) \
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ecoff_stab ((seg), (what), (string), (type), (other), (desc))
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#endif /* ECOFF_DEBUGGING */
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extern void elf_frob_symbol PARAMS ((symbolS *, int *));
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#ifndef obj_frob_symbol
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#define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
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#endif
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extern void elf_pop_insert PARAMS ((void));
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#ifndef obj_pop_insert
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#define obj_pop_insert() elf_pop_insert()
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#endif
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#ifndef OBJ_MAYBE_ELF
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#define obj_ecoff_set_ext elf_ecoff_set_ext
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#ifdef ANSI_PROTOTYPES
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struct ecoff_extr;
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#endif
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extern void elf_ecoff_set_ext PARAMS ((symbolS *, struct ecoff_extr *));
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#endif
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#endif /* _OBJ_ELF_H */
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