gcc/config/m68k/tower.h

   1 /* Definitions of target machine for GNU compiler.
   2    Copyright (C) 1990, 1994, 1996 Free Software Foundation, Inc.
   3    Contributed by Robert Andersson, International Systems, Oslo, ra@intsys.no.
   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 /* For NCR Tower 32/4x0 and 32/6x0 running System V Release 3.  I don't have
  23    access to 200/700/800/850 machines, so I don't know if it works on those
  24    as well.  It shouldn't be far from it however.  The hardware floating point
  25    support is completely untested, as I do not have access to a machine with
  26    a 6888x FPU in it.  It does not work on the System V Release 2 based OS
  27    releases.  Making it work will not be easy, due to the silly way in which
  28    stack expansion is implemented in the OS.
  29
  30    This file is included in tower-as.h.
  31    Do *NOT* include this file directly.  */
  32
  33
  34 #include "m68k/m68k.h"
  35
  36 #define TARGET_DEFAULT (MASK_BITFIELD|MASK_68020)
  37
  38 /* Don't try using XFmode.  */
  39 #undef LONG_DOUBLE_TYPE_SIZE
  40 #define LONG_DOUBLE_TYPE_SIZE 64
  41
  42 /* Names to predefine in the preprocessor for this target machine.  */
  43
  44 #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_200 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
  45
  46 #if 0  /* It is incorrect to test these symbols.
  47           They describe the host, not the target.
  48           It should not matter which model is specified.  */
  49 #ifdef tower32_600
  50 #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_600 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
  51 #endif
  52 #ifdef tower32_700
  53 #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_700 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
  54 #endif
  55 #ifdef tower32_800
  56 #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_800 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
  57 #endif
  58 #ifdef tower32_850
  59 #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_850 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
  60 #endif
  61 #endif
  62
  63 /* The startfiles and libraries depend on the -p and -m68881 options.
  64    The Tower does not support the -pg option.  */
  65
  66 #define LINK_SPEC                                              \
  67 "%{p:%{m68881:-L/usr/lib/fp/libp} -L/usr/lib/libp}             \
  68  %{m68881:-L/usr/lib/fp}"
  69
  70 #define LIB_SPEC \
  71 "%{shlib:-lc_s} -lc crtend.o%s crtn.o%s"
  72
  73 #define STARTFILE_SPEC \
  74 "%{p:mcrt1.o%s} %{!p:crt1.o%s} crtbegin.o%s"
  75
  76 /* Use mem* functions, recognize #ident lines.  */
  77
  78 #define TARGET_MEM_FUNCTIONS
  79 #define IDENT_DIRECTIVE
  80
  81 /* Every structure and union's size must be a multiple of two bytes.  */
  82
  83 #define STRUCTURE_SIZE_BOUNDARY 16
  84
  85 /* All register names should have a leading % character.  */
  86
  87 #undef REGISTER_NAMES
  88 #define REGISTER_NAMES \
  89 {"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7",                      \
  90  "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp",                      \
  91  "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7"};
  92
  93 #undef REGISTER_PREFIX
  94 #define REGISTER_PREFIX "%"
  95
  96 #undef IMMEDIATE_PREFIX
  97 #define IMMEDIATE_PREFIX "&"
  98
  99 /* The prefix to add to user-visible assembler symbols. */
 100
 101 /* We do not want leading underscores.  */
 102
 103 #undef USER_LABEL_PREFIX
 104 #define USER_LABEL_PREFIX ""