gas/config/tc-i370.h

   1 /* tc-i370.h -- Header file for tc-i370.c.
   2    Copyright 1994, 1995, 1996, 1997, 1998, 2000
   3    Free Software Foundation, Inc.
   4    Written by Ian Lance Taylor, Cygnus Support.
   5
   6    This file is part of GAS, the GNU Assembler.
   7
   8    GAS is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    GAS is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with GAS; see the file COPYING.  If not, write to the Free
  20    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21    02111-1307, USA.  */
  22
  23 #define TC_I370
  24
  25 #ifdef ANSI_PROTOTYPES
  26 struct fix;
  27 #endif
  28
  29 /* Set the endianness we are using.  Default to big endian.  */
  30 #ifndef TARGET_BYTES_BIG_ENDIAN
  31 #define TARGET_BYTES_BIG_ENDIAN 1
  32 #endif
  33
  34 #ifndef BFD_ASSEMBLER
  35  #error I370 support requires BFD_ASSEMBLER
  36 #endif
  37
  38 /* The target BFD architecture.  */
  39 #define TARGET_ARCH (i370_arch ())
  40 extern enum bfd_architecture i370_arch PARAMS ((void));
  41
  42 /* Whether or not the target is big endian */
  43 extern int target_big_endian;
  44
  45 /* The target BFD format.  */
  46 #ifdef OBJ_ELF
  47 #define TARGET_FORMAT ("elf32-i370")
  48 #endif
  49
  50 /* Permit temporary numeric labels.  */
  51 #define LOCAL_LABELS_FB 1
  52
  53 /* $ is used to refer to the current location.  */
  54 /* #define DOLLAR_DOT */
  55
  56 #ifdef OBJ_ELF
  57 #define DIFF_EXPR_OK            /* foo-. gets turned into PC relative relocs */
  58 #endif
  59
  60 /* We don't need to handle .word strangely.  */
  61 #define WORKING_DOT_WORD
  62
  63 /* We set the fx_done field appropriately in md_apply_fix.  */
  64 #define TC_HANDLES_FX_DONE
  65 \f
  66
  67 #ifdef OBJ_ELF
  68
  69 /* Branch prediction relocations must force relocation.  */
  70 #define TC_FORCE_RELOCATION_SECTION(FIXP,SEC) 1
  71
  72 /* Support for SHF_EXCLUDE and SHT_ORDERED */
  73 extern int i370_section_letter PARAMS ((int, char **));
  74 extern int i370_section_type PARAMS ((char *, size_t));
  75 extern int i370_section_word PARAMS ((char *, size_t));
  76 extern int i370_section_flags PARAMS ((int, int, int));
  77
  78 #define md_elf_section_letter(LETTER, PTR_MSG)  i370_section_letter (LETTER, PTR_MSG)
  79 #define md_elf_section_type(STR, LEN)           i370_section_type (STR, LEN)
  80 #define md_elf_section_word(STR, LEN)           i370_section_word (STR, LEN)
  81 #define md_elf_section_flags(FLAGS, ATTR, TYPE) i370_section_flags (FLAGS, ATTR, TYPE)
  82
  83 #define tc_comment_chars i370_comment_chars
  84 extern const char *i370_comment_chars;
  85
  86 /* We must never ever try to resolve references to externally visible
  87    symbols in the assembler, because the .o file might go into a shared
  88    library, and some other shared library might override that symbol.  */
  89 #define TC_RELOC_RTSYM_LOC_FIXUP(FIX)  \
  90   ((FIX)->fx_addsy == NULL \
  91    || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
  92        && ! S_IS_WEAK ((FIX)->fx_addsy) \
  93        && S_IS_DEFINED ((FIX)->fx_addsy) \
  94        && ! S_IS_COMMON ((FIX)->fx_addsy)))
  95
  96 #endif /* OBJ_ELF */
  97
  98 /* call md_apply_fix3 with segment instead of md_apply_fix */
  99 #define MD_APPLY_FIX3
 100
 101 /* call md_pcrel_from_section, not md_pcrel_from */
 102 #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
 103 extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
 104
 105 #define md_operand(x)