gcc/config/m68k/vxm68k.h

   1 /* Definitions of target machine for GNU compiler.  Vxworks m68k version.
   2    Copyright (C) 1994, 1996, 1997, 1998 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 /* This comment is here to see if it will keep Sun's cpp from dying.  */
  22
  23 #include "m68k/m68k-none.h"
  24 #include "aoutos.h"
  25
  26 #undef CPP_PREDEFINES
  27 #define CPP_PREDEFINES "-Dmc68000 -D__vxworks -D__vxworks_5 -Acpu=m68k -Amachine=m68k"
  28
  29 /* The default value for -DCPU=.  */
  30 #if TARGET_CPU_DEFAULT == M68K_CPU_m68k || TARGET_CPU_DEFAULT == M68K_CPU_m68020
  31 #define CPP_SUBTARGET_CPU_DEFAULT_SPEC "-DCPU=MC68020"
  32 #else
  33 #if TARGET_CPU_DEFAULT == M68K_CPU_m68000
  34 #define CPP_SUBTARGET_CPU_DEFAULT_SPEC "-DCPU=MC68000"
  35 #else
  36 #if TARGET_CPU_DEFAULT == M68K_CPU_m68030
  37 #define CPP_SUBTARGET_CPU_DEFAULT_SPEC "-DCPU=MC68030"
  38 #else
  39 #if TARGET_CPU_DEFAULT == M68K_CPU_m68040
  40 #define CPP_SUBTARGET_CPU_DEFAULT_SPEC "-DCPU=MC68040"
  41 #else
  42 #if TARGET_CPU_DEFAULT == M68K_CPU_m68302
  43 #define CPP_SUBTARGET_CPU_DEFAULT_SPEC "-DCPU=MC68302"
  44 #else
  45 #if TARGET_CPU_DEFAULT == M68K_CPU_m68332
  46 #define CPP_SUBTARGET_CPU_DEFAULT_SPEC "-DCPU=MC68332"
  47 #else
  48 Unrecognized value in TARGET_CPU_DEFAULT.
  49 #endif
  50 #endif
  51 #endif
  52 #endif
  53 #endif
  54 #endif
  55
  56 #undef SUBTARGET_EXTRA_SPECS
  57 #define SUBTARGET_EXTRA_SPECS \
  58 { "cpp_subtarget_cpu_default", CPP_SUBTARGET_CPU_DEFAULT_SPEC }
  59
  60 /* Vxworks header files require that the macro CPU be set.  */
  61 /* ??? The previous code didn't set CPU if -ansi.  */
  62 #undef CPP_SUBTARGET_SPEC
  63 #define CPP_SUBTARGET_SPEC "\
  64 %{m68000:-DCPU=MC68000 }%{m68010:-DCPU=MC68010 }%{m68020:-DCPU=MC68020 }%{mc68020:-DCPU=MC68020 }%{m68030:-DCPU=MC68030 }%{m68040:-DCPU=MC68040 }%{m68020-40:-DCPU=MC68020 }%{m68302:-DCPU=MC68000 }%{m68332:-DCPU=CPU32 } \
  65 %{!mc68000:%{!m68000:%{!m68010:%{!mc68020:%{!m68020:%{!m68030:%{!m68040:%{!m68020-40:%{!m68302:%{!m68332:%(cpp_subtarget_cpu_default) }}}}}}}}}} \
  66 "
  67
  68 #define DBX_DEBUGGING_INFO
  69 #undef SDB_DEBUGGING_INFO
  70
  71 /* These are the official values from WRS.  */
  72 #undef WCHAR_TYPE
  73 #define WCHAR_TYPE "char"
  74 #undef WCHAR_TYPE_SIZE
  75 #define WCHAR_TYPE_SIZE 8
  76 #undef PTRDIFF_TYPE
  77 #define PTRDIFF_TYPE "long int"
  78 #undef SIZE_TYPE
  79 #define SIZE_TYPE "unsigned int"
  80
  81 /* VxWorks does all the library stuff itself.  */
  82
  83 #define LIB_SPEC ""
  84
  85 /* Provide required defaults for linker.  */
  86
  87 #define LINK_SPEC "-r"
  88
  89 /* VxWorks provides the functionality of crt0.o and friends itself.  */
  90
  91 #define STARTFILE_SPEC ""
  92
  93 /* Every structure or union's size must be a multiple of 2 bytes.  */
  94
  95 #define STRUCTURE_SIZE_BOUNDARY 16
  96
  97 /* GCC is the primary compiler for VxWorks, so we don't need this.  */
  98 #undef PCC_STATIC_STRUCT_RETURN
  99
 100 /* Restrict use of 128 bit floating-point by default since VxWorks doesn't
 101    have the proper accuracy routines for that size; this is not done because
 102    the hardware doesn't support it, despite the name.  */
 103 #define WIDEST_HARDWARE_FP_SIZE 64