gas/config/tc-m68k.h

   1 /* This file is tc-m68k.h
   2
   3    Copyright (C) 1987, 89, 90, 91, 92, 93, 94, 95, 96, 1997
   4    Free Software Foundation, Inc.
   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
  20    the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #define TC_M68K 1
  23
  24 #define TARGET_BYTES_BIG_ENDIAN 1
  25
  26 #ifdef OBJ_AOUT
  27 #ifdef TE_SUN3
  28 #define TARGET_FORMAT "a.out-sunos-big"
  29 #endif
  30 #ifdef TE_NetBSD
  31 #define TARGET_FORMAT "a.out-m68k-netbsd"
  32 #endif
  33 #ifdef TE_LINUX
  34 #define TARGET_FORMAT "a.out-m68k-linux"
  35 #endif
  36 #ifndef TARGET_FORMAT
  37 #define TARGET_FORMAT "a.out-zero-big"
  38 #endif
  39 #endif
  40
  41 #ifdef OBJ_ELF
  42 #define TARGET_FORMAT "elf32-m68k"
  43 #endif
  44
  45 #ifdef TE_APOLLO
  46 #define COFF_MAGIC              APOLLOM68KMAGIC
  47 #define COFF_AOUTHDR_MAGIC      APOLLO_COFF_VERSION_NUMBER
  48 #undef OBJ_COFF_OMIT_OPTIONAL_HEADER
  49 #endif
  50
  51 #ifdef TE_LYNX
  52 #define TARGET_FORMAT           "coff-m68k-lynx"
  53 #endif
  54 #ifdef TE_AUX
  55 #define TARGET_FORMAT           "coff-m68k-aux"
  56 #endif
  57
  58 #ifndef COFF_MAGIC
  59 #define COFF_MAGIC MC68MAGIC
  60 #endif
  61 #define BFD_ARCH bfd_arch_m68k /* for non-BFD_ASSEMBLER */
  62 #define TARGET_ARCH bfd_arch_m68k /* BFD_ASSEMBLER */
  63 #define COFF_FLAGS F_AR32W
  64 #define TC_COUNT_RELOC(x) ((x)->fx_addsy||(x)->fx_subsy)
  65
  66 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype(fixP)
  67 #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
  68 extern int tc_coff_sizemachdep PARAMS ((struct frag *));
  69 #ifdef TE_SUN3
  70 /* This variable contains the value to write out at the beginning of
  71    the a.out file.  The 2<<16 means that this is a 68020 file instead
  72    of an old-style 68000 file */
  73
  74 #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (2<<16|OMAGIC);    /* Magic byte for file header */
  75 #endif /* TE_SUN3 */
  76
  77 #ifndef AOUT_MACHTYPE
  78 #define AOUT_MACHTYPE m68k_aout_machtype
  79 extern int m68k_aout_machtype;
  80 #endif
  81
  82 #define tc_comment_chars m68k_comment_chars
  83 extern const char *m68k_comment_chars;
  84
  85 #define tc_crawl_symbol_chain(a)        {;}     /* not used */
  86 #define tc_headers_hook(a)              {;}     /* not used */
  87 #define tc_aout_pre_write_hook(x)       {;}     /* not used */
  88
  89 #define LISTING_WORD_SIZE 2     /* A word is 2 bytes */
  90 #define LISTING_LHS_WIDTH 2     /* One word on the first line */
  91 #define LISTING_LHS_WIDTH_SECOND 2      /* One word on the second line */
  92 #define LISTING_LHS_CONT_LINES 4/* And 4 lines max */
  93 #define LISTING_HEADER "68K GAS "
  94
  95 #ifndef REGISTER_PREFIX
  96 #define REGISTER_PREFIX '%'
  97 #endif
  98
  99 #if !defined (REGISTER_PREFIX_OPTIONAL)
 100 #if defined (M68KCOFF) || defined (OBJ_ELF)
 101 #define LOCAL_LABEL(name) (name[0] == '.' \
 102                            && (name[1] == 'L' || name[1] == '.'))
 103 #define FAKE_LABEL_NAME ".L0\001"
 104 #define REGISTER_PREFIX_OPTIONAL 0
 105 #else
 106 #define REGISTER_PREFIX_OPTIONAL 1
 107 #endif
 108 #endif /* not def REGISTER_PREFIX and not def OPTIONAL_REGISTER_PREFIX */
 109
 110 #ifdef TE_DELTA
 111 /* On the Delta, `%' can occur within a label name.  I'm assuming it
 112    can't be used as the initial character.  If that's not true, more
 113    work will be needed to fix this up.  */
 114 #define LEX_PCT 1
 115 /* On the Delta, dots are not required before pseudo-ops.  */
 116 #define NO_PSEUDO_DOT
 117 #endif
 118
 119 extern void m68k_mri_mode_change PARAMS ((int));
 120 #define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i)
 121
 122 extern int m68k_conditional_pseudoop PARAMS ((pseudo_typeS *));
 123 #define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop)
 124
 125 #ifdef BFD_ASSEMBLER
 126
 127 #define tc_frob_symbol(sym,punt)                                \
 128 do                                                              \
 129   {                                                             \
 130     if (S_GET_SEGMENT (sym) == reg_section)                     \
 131       punt = 1;                                                 \
 132     if (S_GET_SEGMENT (sym) == text_section                     \
 133         && (S_GET_VALUE (sym) & 1) != 0)                        \
 134       as_warn ("text label `%s' aligned to odd boundary",       \
 135                S_GET_NAME (sym));                               \
 136   }                                                             \
 137 while (0)
 138
 139 #define NO_RELOC BFD_RELOC_NONE
 140
 141 #ifdef OBJ_ELF
 142
 143 /* This expression evaluates to false if the relocation is for a local object
 144    for which we still want to do the relocation at runtime.  True if we
 145    are willing to perform this relocation while building the .o file.  */
 146
 147 #define TC_RELOC_RTSYM_LOC_FIXUP(FIX)                   \
 148         ((FIX)->fx_r_type != BFD_RELOC_8_PLT_PCREL      \
 149          && (FIX)->fx_r_type != BFD_RELOC_16_PLT_PCREL  \
 150          && (FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL  \
 151          && (FIX)->fx_r_type != BFD_RELOC_8_GOT_PCREL   \
 152          && (FIX)->fx_r_type != BFD_RELOC_16_GOT_PCREL  \
 153          && (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL)
 154
 155 #define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X)
 156 #endif
 157
 158 #else /* ! BFD_ASSEMBLER */
 159
 160 #define tc_frob_coff_symbol(sym)                                \
 161 do                                                              \
 162   {                                                             \
 163     if (S_GET_SEGMENT (sym) == text_section                     \
 164         && (S_GET_VALUE (sym) & 1) != 0)                        \
 165       as_warn ("text label `%s' aligned to odd boundary",       \
 166                S_GET_NAME (sym));                               \
 167   }                                                             \
 168 while (0)
 169
 170 #define NO_RELOC 0
 171
 172 #endif /* ! BFD_ASSEMBLER */
 173
 174 #define DIFF_EXPR_OK
 175
 176 extern void m68k_init_after_args PARAMS ((void));
 177 #define tc_init_after_args m68k_init_after_args
 178
 179 extern int m68k_parse_long_option PARAMS ((char *));
 180 #define md_parse_long_option m68k_parse_long_option
 181
 182 #define md_operand(x)
 183
 184 #define TARGET_WORD_SIZE 32
 185 #define TARGET_ARCH bfd_arch_m68k
 186
 187 extern struct relax_type md_relax_table[];
 188 #define TC_GENERIC_RELAX_TABLE md_relax_table
 189
 190 /* Copied from write.c */
 191 /* This was formerly called M68K_AIM_KLUDGE.  */
 192 #define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \
 193   if (aim==0 && this_state== 4) { /* hard encoded from tc-m68k.c */ \
 194     aim=this_type->rlx_forward+1; /* Force relaxation into word mode */ \
 195   }
 196
 197 /* end of tc-m68k.h */