gas/config/obj-elf.h

   1 /* ELF object file format.
   2    Copyright (C) 1992, 93, 94, 95, 1996 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 1, or (at your option)
   9    any later version.
  10
  11    GAS is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GAS; see the file COPYING.  If not, write to the Free
  18    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19    02111-1307, USA.  */
  20
  21
  22 /* HP PA-RISC support was contributed by the Center for Software Science
  23    at the University of Utah.  */
  24
  25 #ifndef _OBJ_ELF_H
  26 #define _OBJ_ELF_H
  27
  28 #define OBJ_ELF 1
  29
  30 #define OUTPUT_FLAVOR bfd_target_elf_flavour
  31
  32 #include <bfd.h>
  33
  34 #define BYTES_IN_WORD 4         /* for now */
  35 #include "bfd/elf-bfd.h"
  36
  37 /* Use this to keep track of .size expressions that involve differences
  38    that we can't compute yet.  */
  39 #define OBJ_SYMFIELD_TYPE expressionS *
  40
  41 /* Symbol fields used by the ELF back end.  */
  42 #define ELF_TARGET_SYMBOL_FIELDS int local:1;
  43
  44 /* Don't change this; change ELF_TARGET_SYMBOL_FIELDS instead.  */
  45 #define TARGET_SYMBOL_FIELDS ELF_TARGET_SYMBOL_FIELDS
  46
  47 #include "targ-cpu.h"
  48
  49 #ifndef FALSE
  50 #define FALSE 0
  51 #define TRUE  !FALSE
  52 #endif
  53
  54 #define obj_begin() elf_begin ()
  55 extern void elf_begin PARAMS ((void));
  56
  57 /* should be conditional on address size! */
  58 #define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
  59
  60 #define S_GET_SIZE(S) (elf_symbol ((S)->bsym)->internal_elf_sym.st_size)
  61 #define S_SET_SIZE(S,V) \
  62   (elf_symbol((S)->bsym)->internal_elf_sym.st_size = (V))
  63
  64 #define S_GET_ALIGN(S) (elf_symbol ((S)->bsym)->internal_elf_sym.st_value)
  65 #define S_SET_ALIGN(S,V) \
  66   (elf_symbol ((S)->bsym)->internal_elf_sym.st_value = (V))
  67
  68 extern asection *gdb_section;
  69
  70 #define obj_frob_file() elf_frob_file()
  71
  72 extern void elf_frob_file PARAMS ((void));
  73 extern void elf_file_symbol PARAMS ((char *));
  74 #define obj_app_file elf_file_symbol
  75
  76 extern void obj_elf_section PARAMS ((int));
  77 extern void obj_elf_previous PARAMS ((int));
  78 extern void obj_elf_version PARAMS ((int));
  79
  80 /* BFD wants to write the udata field, which is a no-no for the
  81    globally defined sections.  */
  82 #define obj_sec_sym_ok_for_reloc(SEC)   ((SEC)->owner != 0)
  83
  84 /* When setting one symbol equal to another, by default we probably
  85    want them to have the same "size", whatever it means in the current
  86    context.  */
  87 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
  88   S_SET_SIZE ((DEST), S_GET_SIZE (SRC))
  89
  90 /* Stabs go in a separate section.  */
  91 #define SEPARATE_STAB_SECTIONS 1
  92
  93 /* We need 12 bytes at the start of the section to hold some initial
  94    information.  */
  95 extern void obj_elf_init_stab_section PARAMS ((segT));
  96 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
  97
  98 /* For now, always set ECOFF_DEBUGGING for an Alpha target.  */
  99 #ifdef TC_ALPHA
 100 #define ECOFF_DEBUGGING 1
 101 #endif
 102
 103 /* For now, always set ECOFF_DEBUGGING for a MIPS target.  */
 104 #ifdef TC_MIPS
 105 #define ECOFF_DEBUGGING 1
 106 #endif
 107
 108 #if ECOFF_DEBUGGING
 109
 110 /* If we are generating ECOFF debugging information, we need some
 111    additional fields for each symbol.  */
 112 #undef TARGET_SYMBOL_FIELDS
 113 #define TARGET_SYMBOL_FIELDS \
 114   ELF_TARGET_SYMBOL_FIELDS \
 115   struct efdr *ecoff_file; \
 116   struct localsym *ecoff_symbol; \
 117   valueT ecoff_extern_size;
 118
 119 /* We smuggle stabs in ECOFF rather than using a separate section.
 120    The Irix linker can not handle a separate stabs section.  */
 121 #undef SEPARATE_STAB_SECTIONS
 122 #undef INIT_STAB_SECTION
 123 #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
 124   ecoff_stab ((seg), (what), (string), (type), (other), (desc))
 125
 126 #define OBJ_GENERATE_ASM_LINENO(filename, lineno) \
 127   ecoff_generate_asm_lineno ((filename), (lineno))
 128
 129 #endif /* ECOFF_DEBUGGING */
 130
 131 extern void elf_frob_symbol PARAMS ((struct symbol *, int *));
 132 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
 133
 134 extern void elf_pop_insert PARAMS ((void));
 135 #define obj_pop_insert()        elf_pop_insert()
 136
 137 #ifndef OBJ_MAYBE_ELF
 138 #define obj_ecoff_set_ext elf_ecoff_set_ext
 139 extern void elf_ecoff_set_ext ();
 140 #endif
 141
 142 #endif /* _OBJ_ELF_H */