gcc/config/m68k/ccur-GAS.h

   1 /* Definitions of target machine for GNU compiler.  Concurrent 68k version.
   2    Copyright (C) 1987, 1988, 1995, 1996, 1997 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC 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 2, or (at your option)
   9 any later version.
  10
  11 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef MASSCOMP
  22 #define MASSCOMP
  23 #endif
  24
  25 #ifndef CONCURRENT
  26 #define CONCURRENT
  27 #endif
  28
  29 #ifndef __mc68000__
  30 #define __mc68000__
  31 #endif
  32
  33 #ifndef __mc68020__
  34 #define __mc68020__
  35 #endif
  36
  37 #define USE_GAS
  38 #define MOVE_RATIO 100
  39
  40 #define SPACE_AFTER_L_OPTION
  41 #define SWITCHES_NEED_SPACES "oL"
  42
  43 /* See m68k.h.  7 means 68020 with 68881.  */
  44 #define TARGET_DEFAULT (MASK_68040|MASK_BITFIELD|MASK_68881|MASK_68020)
  45
  46 #include "m68k/m68k.h"
  47
  48 #define SIZE_TYPE "int"
  49
  50 /* for 68k machines this only needs to be TRUE for the 68000 */
  51
  52 #undef STRICT_ALIGNMENT
  53 #define STRICT_ALIGNMENT 0
  54
  55 /* Names to predefine in the preprocessor for this target machine.  */
  56 #define CPP_PREDEFINES \
  57     "-Dmc68000 -Dmasscomp -DMASSCOMP -Dunix -DLANGUAGE_C -Dconcurrent -DCONCURRENT"
  58
  59 #undef TARGET_VERSION
  60 #define TARGET_VERSION fprintf (stderr, " (68k, GNU GAS syntax)");
  61
  62 /* Discard internal local symbols beginning with 'L'.  */
  63 #define LINK_SPEC "-X"
  64
  65 /* Every structure or union's size must be a multiple of 4 bytes.  */
  66 #define STRUCTURE_SIZE_BOUNDARY 16
  67
  68 /* No data type wants to be aligned rounder than this.  */
  69 #undef BIGGEST_ALIGNMENT
  70 #define BIGGEST_ALIGNMENT 32
  71
  72 /* Allocation boundary (in *bits*) for storing pointers in memory.  */
  73 #undef POINTER_BOUNDARY
  74 #define POINTER_BOUNDARY 32
  75
  76 /* Alignment of field after `int : 0' in a structure.  */
  77 #undef EMPTY_FIELD_BOUNDARY
  78 #define EMPTY_FIELD_BOUNDARY 32
  79
  80 /* Allocation boundary in bits for the code of a function */
  81 #undef  FUNCTION_BOUNDARY
  82 #define FUNCTION_BOUNDARY 32
  83
  84 /* Make strings long-word aligned so dhrystones will run faster.  */
  85 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
  86    (TREE_CODE (EXP) == STRING_CST \
  87     && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
  88
  89 /* Make arrays of chars word-aligned for the same reasons.  */
  90 #define DATA_ALIGNMENT(TYPE, ALIGN)             \
  91   (TREE_CODE (TYPE) == ARRAY_TYPE               \
  92    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode    \
  93    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
  94
  95 /* This is BSD, so it wants DBX format.  */
  96 #define DBX_DEBUGGING_INFO 1
  97
  98 /* Override parts of m68k.h */
  99
 100 #undef CALL_USED_REGISTERS
 101 #define CALL_USED_REGISTERS \
 102  {1, 1, 0, 0, 0, 0, 0, 0, \
 103   1, 1, 0, 0, 0, 0, 0, 1, \
 104   1, 1, 0, 0, 0, 0, 1, 1 }
 105
 106 #undef REG_ALLOC_ORDER
 107 #define REG_ALLOC_ORDER \
 108 {  0,  1,  2,  3,  4,  5,  6,  7,\
 109    8,  9, 10, 11, 12, 13, 14, 15, \
 110   16, 17, 22, 23, 18, 19, 20, 21 }
 111
 112 #undef ASM_FILE_START
 113 #define ASM_FILE_START(FILE)    \
 114   fprintf (FILE, "#NO_APP\n.globl fltused\n");
 115
 116 #undef ASM_OUTPUT_ALIGN
 117 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 118 { int _LOG = LOG;                       \
 119   if (_LOG == 1)                        \
 120     fprintf (FILE, "\t.even\n");        \
 121   else if (_LOG == 2)                   \
 122     fprintf (FILE, "\t.align 4\n");     \
 123   else if (_LOG != 0)                   \
 124     fprintf (FILE, "\t.align %d\n", _LOG);\
 125 }
 126
 127 /* crt0.c should use the vax-bsd style of entry, with a dummy arg.  */
 128
 129 #define CRT0_DUMMIES bogus_fp,