gcc/config/rs6000/vxworks.h

   1 /* Definitions of target machine for GNU compiler.  Vxworks PowerPC version.
   2    Copyright (C) 1996, 2000, 2002 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 /* N.B. Only big endian PPC is supported by VxWorks.  */
  22
  23 #undef CPP_PREDEFINES
  24 #define CPP_PREDEFINES \
  25   "-D__vxworks -D__vxworks__ -D_BIG_ENDIAN -D__BIG_ENDIAN__"
  26
  27 /* We have to kill off the entire specs set created by rs6000/sysv4.h
  28    and substitute our own set.  The top level vxworks.h has done some
  29    of this for us.  */
  30
  31 #undef SUBTARGET_EXTRA_SPECS
  32 #undef CPP_SPEC
  33 #undef CC1_SPEC
  34 #undef ASM_SPEC
  35
  36 #define SUBTARGET_EXTRA_SPECS /* none needed */
  37
  38 #define CPP_SPEC \
  39 "-DCPU_FAMILY=PPC -D__ppc -D__EABI__ -D__ELF__ \
  40  %{t403: -DCPU=PPC403 -D_SOFT_FLOAT ; \
  41    t405: -DCPU=PPC405 -D_SOFT_FLOAT ; \
  42    t440: -DCPU=PPC440 -D_SOFT_FLOAT ; \
  43    t603: -DCPU=PPC603               ; \
  44    t604: -DCPU=PPC604               ; \
  45    t860: -DCPU=PPC860 -D_SOFT_FLOAT ; \
  46        : -DCPU=PPC604}  \
  47  %{!msoft-float:-D__hardfp}        \
  48  %{fpic: -D__PIC__=1 -D__pic__=1 ; \
  49    fPIC: -D__PIC__=2 -D__pic__=2 } \
  50  %(cpp_cpu)"
  51
  52 /* N.B. GCC does not currently support the 440 processor as distinct
  53    from the 405 series.  */
  54 #define CC1_SPEC \
  55 "%{t403: -mcpu=403 -mstrict-align ;                             \
  56    t405: -mcpu=405 -mstrict-align ;                             \
  57    t440: -mcpu=405 -mstrict-align ;                             \
  58    t603: -mcpu=603 -mstrict-align ;                             \
  59    t604: -mcpu=604 -mstrict-align ;                             \
  60    t860: -mcpu=860                ;                             \
  61        : -mcpu=604 -mstrict-align }                             \
  62  %{G*} %{mno-sdata:-msdata=none} %{msdata:-msdata=default}      \
  63  %{mlittle|mlittle-endian:-mstrict-align}                       \
  64  %{profile: -p}                                                 \
  65  %{fvec:-maltivec} %{fvec-eabi:-maltivec -mabi=altivec}"
  66
  67 #define ASM_SPEC "%(asm_cpu) \
  68 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
  69 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
  70 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} -mbig"
  71
  72 #undef MULTILIB_DEFAULTS
  73 #define MULTILIB_DEFAULTS { "t604" }
  74
  75 /* We can't use .ctors/.dtors sections.  */
  76 #undef TARGET_ASM_OUTPUT_CONSTRUCTOR
  77 #undef TARGET_ASM_OUTPUT_DESTRUCTOR
  78
  79 /* Nor sdata.  */
  80 #undef SDATA_DEFAULT_SIZE
  81 #define SDATA_DEFAULT_SIZE 0