gas/config/tc-arm.h

   1 /* This file is tc-arm.h
   2    Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
   3    Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
   4         Modified by David Taylor (dtaylor@armltd.co.uk)
   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_ARM 1
  24
  25 #ifndef TARGET_BYTES_BIG_ENDIAN
  26 #define TARGET_BYTES_BIG_ENDIAN 0
  27 #endif
  28
  29 #define WORKING_DOT_WORD
  30
  31 #define COFF_MAGIC ARMMAGIC
  32 #define TARGET_ARCH bfd_arch_arm
  33
  34 #define AOUT_MACHTYPE 0
  35
  36 #define DIFF_EXPR_OK
  37
  38 #ifdef  LITTLE_ENDIAN
  39 #undef  LITTLE_ENDIAN
  40 #endif
  41 #ifdef  BIG_ENDIAN
  42 #undef  BIG_ENDIAN
  43 #endif
  44
  45 #define LITTLE_ENDIAN 1234
  46 #define BIG_ENDIAN 4321
  47
  48 #ifdef OBJ_AOUT
  49 #ifdef TE_RISCIX
  50 #define TARGET_FORMAT "a.out-riscix"
  51 #else
  52 #define ARM_BI_ENDIAN
  53 #define TARGET_FORMAT \
  54   (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
  55 #endif
  56 #endif
  57
  58 #ifdef OBJ_AIF
  59 #define TARGET_FORMAT "aif"
  60 #endif
  61
  62 #ifdef OBJ_COFF
  63 # define ARM_BI_ENDIAN
  64   extern boolean arm_validate_fix ();
  65 # define TC_VALIDATE_FIX(fixP,segType,Label) if (arm_validate_fix (fixP)) add_symbolP = fixP->fx_addsy
  66 # ifdef TE_PE
  67 #  define TC_FORCE_RELOCATION(x) ((x)->fx_r_type==BFD_RELOC_RVA)
  68 #  define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
  69 # else
  70 #  define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
  71    /* Tell tc-arm.c to support runtime endian selection.  */
  72 # endif
  73 #endif
  74
  75 /* start-sanitize-armelf */
  76 #ifdef OBJ_ELF
  77 extern boolean arm_validate_fix ();
  78 #define TC_VALIDATE_FIX(fixP,segType,Label) if (arm_validate_fix (fixP)) add_symbolP = fixP->fx_addsy
  79 #define ARM_BI_ENDIAN
  80 #define TARGET_FORMAT (target_big_endian ? "elf32-bigarm" : "elf32-littlearm")
  81 #endif
  82 /* end-sanitize-armelf */
  83
  84 #define md_convert_frag(b,s,f)          {as_fatal (_("arm convert_frag\n"));}
  85
  86 extern void arm_cleanup PARAMS ((void));
  87 extern void arm_start_line_hook PARAMS ((void));
  88 extern void arm_frob_label PARAMS ((struct symbol *));
  89 #define md_cleanup() arm_cleanup ()
  90 #define md_start_line_hook() arm_start_line_hook ()
  91 #define tc_frob_label(S) arm_frob_label (S)
  92 /* We also need to mark assembler created symbols:  */
  93 #define tc_frob_fake_label(S) arm_frob_label (S)
  94 /* NOTE: The fake label creation in stabs.c:s_stab_generic() has
  95    deliberately not been updated to mark assembler created stabs
  96    symbols as Thumb.  */
  97
  98 /* start-sanitize-armelf */
  99 #ifdef OBJ_ELF
 100 #define obj_fix_adjustable(fixP) arm_fix_adjustable(fixP)
 101 #else
 102 /* end-sanitize-armelf */
 103 #define obj_fix_adjustable(fixP) 0
 104 /* start-sanitize-armelf */
 105 #endif
 106 /* end-sanitize-armelf */
 107
 108 /* We need to keep some local information on symbols.  */
 109
 110 #define TC_SYMFIELD_TYPE unsigned int
 111 #define ARM_GET_FLAG(s)         ((s)->sy_tc)
 112 #define ARM_SET_FLAG(s,v)       ((s)->sy_tc |= (v))
 113 #define ARM_RESET_FLAG(s,v)     ((s)->sy_tc &= ~(v))
 114
 115 #define ARM_FLAG_THUMB          (1 << 0)        /* The symbol is a Thumb symbol rather than an Arm symbol.  */
 116 #define ARM_FLAG_INTERWORK      (1 << 1)        /* The symbol is attached to code that suppports interworking.  */
 117 #define THUMB_FLAG_FUNC         (1 << 2)        /* The symbol is attached to the start of a Thumb function.  */
 118
 119 #define ARM_IS_THUMB(s)         (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
 120 #define ARM_IS_INTERWORK(s)     (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
 121 #define THUMB_IS_FUNC(s)        (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
 122
 123 #define ARM_SET_THUMB(s,t)      ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB)     : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
 124 #define ARM_SET_INTERWORK(s,t)  ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
 125 #define THUMB_SET_FUNC(s,t)     ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC)    : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
 126
 127
 128 #define TC_FIX_TYPE PTR
 129 #define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL)
 130
 131 #define TC_START_LABEL(C,STR) \
 132   (c == ':' || (c == '/' && arm_data_in_code ()))
 133 int arm_data_in_code PARAMS ((void));
 134
 135 #define tc_canonicalize_symbol_name(str) \
 136   arm_canonicalize_symbol_name (str);
 137 char *arm_canonicalize_symbol_name PARAMS ((char *));
 138
 139 #if 0   /* It isn't as simple as this */
 140 #define tc_frob_symbol(sym,punt)        \
 141 {       if (S_IS_LOCAL (sym))           \
 142           {                             \
 143             punt = 1;                   \
 144             sym->sy_used_in_reloc = 0;  \
 145           }}
 146 #endif
 147
 148 #ifdef OBJ_ELF
 149 #define obj_frob_symbol(sym, punt)  armelf_frob_symbol (sym, punt)
 150 #endif
 151
 152 /* Finish processing the entire symbol table:  */
 153 #ifdef OBJ_ELF
 154 #define obj_adjust_symtab armelf_adjust_symtab
 155 extern void armelf_adjust_symtab PARAMS ((void));
 156 #else
 157 #define obj_adjust_symtab arm_adjust_symtab
 158 extern void arm_adjust_symtab PARAMS ((void));
 159 #endif
 160
 161 #if 0
 162 #define tc_crawl_symbol_chain(a)        {;}     /* not used */
 163 #define tc_headers_hook(a)              {;}     /* not used */
 164 #endif
 165
 166 #define tc_aout_pre_write_hook(x)       {;}     /* not used */
 167
 168 #define LISTING_HEADER "ARM GAS "
 169
 170 #define OPTIONAL_REGISTER_PREFIX '%'
 171
 172 #define md_operand(x)
 173
 174 #define TC_HANDLES_FX_DONE
 175
 176 #define MD_APPLY_FIX3
 177
 178 #define LOCAL_LABEL(name) (name[0] == '.' \
 179                            && (name[1] == 'L'))
 180 #define LOCAL_LABELS_FB  1
 181
 182 /* end of tc-arm.h */