gas/config/tc-m88k.h

   1 /* m88k.h -- Assembler for the Motorola 88000
   2    Contributed by Devon Bowen of Buffalo University
   3    and Torbjorn Granlund of the Swedish Institute of Computer Science.
   4    Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000,
   5    2002, 2005 Free Software Foundation, Inc.
   6
   7    This file is part of GAS, the GNU Assembler.
   8
   9    GAS is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2, or (at your option)
  12    any later version.
  13
  14    GAS is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GAS; see the file COPYING.  If not, write to the Free
  21    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  22    02110-1301, USA.  */
  23
  24 #define TC_M88K
  25
  26 #define TARGET_BYTES_BIG_ENDIAN 1
  27
  28 #ifdef M88KCOFF
  29 #define COFF_MAGIC     MC88OMAGIC
  30 #define BFD_ARCH       bfd_arch_m88k
  31 #define COFF_FLAGS     F_AR32W
  32 #endif
  33
  34 #define NEED_FX_R_TYPE
  35 #define TC_KEEP_FX_OFFSET
  36 #define TC_CONS_RELOC RELOC_32
  37
  38 /* Different type of relocation available in the m88k.  */
  39
  40 enum reloc_type
  41 {
  42   RELOC_LO16,                   /* lo16(sym).  */
  43   RELOC_HI16,                   /* hi16(sym).  */
  44   RELOC_PC16,                   /* bb0, bb1, bcnd.  */
  45   RELOC_PC26,                   /* br, bsr.  */
  46   RELOC_32,                     /* Jump tables, etc.  */
  47   RELOC_IW16,                   /* Global access through linker regs 28.  */
  48   NO_RELOC
  49 };
  50
  51 struct reloc_info_m88k
  52 {
  53   unsigned long int r_address;
  54   unsigned int r_symbolnum:24;
  55   unsigned int r_extern:1;
  56   unsigned int r_pad:3;
  57   enum reloc_type r_type:4;
  58   long int r_addend;
  59 };
  60
  61 #define relocation_info reloc_info_m88k
  62
  63 /* The m88k uses '@' to start local labels.  */
  64 #define LEX_AT (LEX_BEGIN_NAME | LEX_NAME)
  65
  66 #ifndef BFD_ASSEMBLER
  67 #define LOCAL_LABEL(name) \
  68   ((name[0] =='@' && (name [1] == 'L' || name [1] == '.')) \
  69    || (name[0] == 'L' && name[1] == '0' && name[2] == '\001'))
  70 #endif
  71
  72 /* The m88k uses pseudo-ops with no leading period.  */
  73 #define NO_PSEUDO_DOT 1
  74
  75 /* Don't warn on word overflow; it happens on %hi relocs.  */
  76 #undef WARN_SIGNED_OVERFLOW_WORD
  77
  78 #define md_convert_frag(b,s,f)          {as_fatal (_("m88k convert_frag\n"));}
  79
  80 /* We don't need to do anything special for undefined symbols.  */
  81 #define md_undefined_symbol(s) 0
  82
  83 /* We have no special operand handling.  */
  84 #define md_operand(e)
  85
  86 #ifdef M88KCOFF
  87
  88 /* Whether a reloc should be output.  */
  89 #define TC_COUNT_RELOC(fixp) ((fixp)->fx_addsy != NULL)
  90
  91 /* Get the BFD reloc type to use for a gas fixS structure.  */
  92 #define TC_COFF_FIX2RTYPE(fixp) tc_coff_fix2rtype (fixp)
  93
  94 /* No special hook needed for symbols.  */
  95 #define tc_coff_symbol_emit_hook(s)
  96
  97 /* Align sections to a four byte boundary.  */
  98 #ifndef max
  99 #define max(a,b)        (((a) > (b)) ? (a) : (b))
 100 #endif
 101 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) max (section_alignment[(int) (SEG)], 4)
 102
 103 /* Fill in rs_align_code fragments.  */
 104 extern void m88k_handle_align (fragS *);
 105 #define HANDLE_ALIGN(frag)  m88k_handle_align (frag)
 106
 107 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4)
 108
 109 #endif /* M88KCOFF */