gcc/config/m68k/altos3068.h

   1 /* Definitions of target machine for GNU compiler.  Altos 3068 68020 version.
   2    Copyright (C) 1988, 1989, 1993, 1996 Free Software Foundation, Inc.
   3    Contributed by Jyrki Kuoppala <jkp@cs.hut.fi>
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 #include "m68k/m68k.h"
  24
  25 /* See m68k.h.  7 means 68020 with 68881.  */
  26 /* 5 is without 68881.  Change to 7 if you have 68881 */
  27
  28 #ifndef TARGET_DEFAULT
  29 #define TARGET_DEFAULT (MASK_BITFIELD|MASK_68020)
  30
  31 /* Don't try using XFmode.  */
  32 #undef LONG_DOUBLE_TYPE_SIZE
  33 #define LONG_DOUBLE_TYPE_SIZE 64
  34 #endif
  35
  36 /* Define __HAVE_68881__ in preprocessor,
  37    according to the -m flags.
  38    This will control the use of inline 68881 insns in certain macros.
  39    Also inform the program which CPU this is for.  */
  40
  41 #if TARGET_DEFAULT & MASK_68881
  42
  43 /* -m68881 is the default */
  44 #define CPP_SPEC \
  45 "%{!msoft-float:-D__HAVE_68881__ }\
  46 %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
  47
  48 #else
  49
  50 /* -msoft-float is the default */
  51 #define CPP_SPEC \
  52 "%{m68881:-D__HAVE_68881__ }\
  53 %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
  54
  55 #endif
  56
  57 /* -m68000 requires special flags to the assembler.  */
  58
  59 #define ASM_SPEC \
  60  "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
  61
  62 /* Names to predefine in the preprocessor for this target machine.  */
  63
  64 #define CPP_PREDEFINES "-Dmc68000 -DPORTAR -Dmc68k32 -Uvax -Dm68k -Dunix -Asystem=unix  -Acpu=m68k -Amachine=m68k"
  65
  66 /* Every structure or union's size must be a multiple of 2 bytes.  */
  67
  68 #define STRUCTURE_SIZE_BOUNDARY 16
  69
  70 /* Generate calls to memcpy, memcmp and memset.  */
  71 #define TARGET_MEM_FUNCTIONS
  72
  73 /* We use gnu assembler, linker and gdb, so we want DBX format.  */
  74
  75 #define DBX_DEBUGGING_INFO
  76
  77 /* Tell some conditionals we will use GAS.  Is this really used?  */
  78
  79 #define USE_GAS
  80
  81 #undef ASM_OUTPUT_FLOAT_OPERAND
  82 #define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE)               \
  83  do {                                                           \
  84       if (CODE == 'f')                                          \
  85         {                                                       \
  86           char dstr[30];                                        \
  87           REAL_VALUE_TO_DECIMAL (VALUE, "%.9g", dstr);          \
  88           fprintf (FILE, "#0r%s", dstr);                        \
  89         }                                                       \
  90       else                                                      \
  91         {                                                       \
  92           long l;                                               \
  93           REAL_VALUE_TO_TARGET_SINGLE (VALUE, l);               \
  94           if (sizeof (int) == sizeof (long))                    \
  95             asm_fprintf ((FILE), "%I0x%x", (int) l);            \
  96           else                                                  \
  97             asm_fprintf ((FILE), "%I0x%lx", l);                 \
  98         }                                                       \
  99      } while (0)
 100
 101 #undef ASM_OUTPUT_DOUBLE_OPERAND
 102 #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE)           \
 103   do { char dstr[30];                                   \
 104        REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr);    \
 105        fprintf (FILE, "#0r%s", dstr);                   \
 106      } while (0)
 107
 108 /* Return pointer values in both d0 and a0.  */
 109
 110 #undef FUNCTION_EXTRA_EPILOGUE
 111 #define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE)                             \
 112 {                                                                       \
 113   if (current_function_returns_pointer                                  \
 114       && ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))     \
 115     fprintf (FILE, "\tmovel d0,a0\n");                                  \
 116 }