gas/config/obj-elf.h

   1 /* ELF object file format.
   2    Copyright (C) 1992, 1993 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
  18    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 /* HP PA-RISC support was contributed by the Center for Software Science
  22    at the University of Utah.  */
  23
  24 #ifndef _OBJ_ELF_H
  25 #define _OBJ_ELF_H
  26
  27 #define OBJ_ELF 1
  28
  29 #define OUTPUT_FLAVOR bfd_target_elf_flavour
  30
  31 #include <bfd.h>
  32
  33 #define BYTES_IN_WORD 4         /* for now */
  34 #include "bfd/libelf.h"
  35
  36 /* Use this to keep track of .size expressions that involve differences
  37    that we can't compute yet.  */
  38 #define OBJ_SYMFIELD_TYPE expressionS *
  39
  40 /* Symbol fields used by the ELF back end.  */
  41 #define ELF_TARGET_SYMBOL_FIELDS int local:1; unsigned long sy_name_offset;
  42
  43 /* Don't change this; change ELF_TARGET_SYMBOL_FIELDS instead.  */
  44 #define TARGET_SYMBOL_FIELDS ELF_TARGET_SYMBOL_FIELDS
  45
  46 #include "targ-cpu.h"
  47
  48 #ifndef FALSE
  49 #define FALSE 0
  50 #define TRUE  !FALSE
  51 #endif
  52
  53 /* should be conditional on address size! */
  54 #define elf_symbol(asymbol) ((elf_symbol_type *)(&(asymbol)->the_bfd))
  55
  56 #define S_GET_SIZE(S) (elf_symbol ((S)->bsym)->internal_elf_sym.st_size)
  57 #define S_SET_SIZE(S,V) \
  58   (elf_symbol((S)->bsym)->internal_elf_sym.st_size = (V))
  59
  60 #define S_GET_ALIGN(S) (elf_symbol ((S)->bsym)->internal_elf_sym.st_value)
  61 #define S_SET_ALIGN(S,V) \
  62   (elf_symbol ((S)->bsym)->internal_elf_sym.st_value = (V))
  63
  64 extern asection *gdb_section;
  65
  66 #define obj_frob_file() elf_frob_file()
  67
  68 extern void elf_frob_file PARAMS ((void));
  69 extern void elf_file_symbol PARAMS ((char *));
  70 #define obj_app_file elf_file_symbol
  71
  72 extern void obj_elf_section PARAMS ((int));
  73 extern void obj_elf_previous PARAMS ((int));
  74 extern void obj_elf_version PARAMS ((int));
  75
  76 /* BFD wants to write the udata field, which is a no-no for the
  77    globally defined sections.  */
  78 #define obj_sec_sym_ok_for_reloc(SEC)   ((SEC)->owner != 0)
  79
  80 /* When setting one symbol equal to another, by default we probably
  81    want them to have the same "size", whatever it means in the current
  82    context.  */
  83 #define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST,SRC) \
  84   S_SET_SIZE ((DEST), S_GET_SIZE (SRC))
  85
  86 /* Stabs go in a separate section.  */
  87 #define SEPARATE_STAB_SECTIONS 1
  88
  89 /* We need 12 bytes at the start of the section to hold some initial
  90    information.  */
  91 extern void obj_elf_init_stab_section PARAMS ((segT));
  92 #define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
  93
  94 /* For now, always set ECOFF_DEBUGGING for a MIPS target.  */
  95 #ifdef TC_MIPS
  96 #define ECOFF_DEBUGGING 1
  97 #endif
  98
  99 #if ECOFF_DEBUGGING
 100
 101 /* If we are generating ECOFF debugging information, we need some
 102    additional fields for each symbol.  */
 103 #undef TARGET_SYMBOL_FIELDS
 104 #define TARGET_SYMBOL_FIELDS \
 105   ELF_TARGET_SYMBOL_FIELDS \
 106   struct efdr *ecoff_file; \
 107   struct localsym *ecoff_symbol; \
 108   valueT ecoff_extern_size;
 109
 110 /* We smuggle stabs in ECOFF rather than using a separate section.
 111    The Irix linker can not handle a separate stabs section.  */
 112 #undef SEPARATE_STAB_SECTIONS
 113 #undef INIT_STAB_SECTION
 114 #define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
 115   ecoff_stab ((what), (string), (type), (other), (desc))
 116
 117 #define OBJ_GENERATE_ASM_LINENO(filename, lineno) \
 118   ecoff_generate_asm_lineno ((filename), (lineno))
 119
 120 #endif /* ECOFF_DEBUGGING */
 121
 122 extern void elf_frob_symbol PARAMS ((struct symbol *));
 123 #define obj_frob_symbol(symp, punt) elf_frob_symbol (symp)
 124
 125 #endif /* _OBJ_ELF_H */