gcc/config/arm/xscale-elf.h

   1 /* Definitions for XScale architectures using ELF
   2    Copyright (C) 1999, 2000, 2001, 2007 Free Software Foundation, Inc.
   3    Contributed by Catherine Moore <clm@cygnus.com>
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 /* Run-time Target Specification.  */
  22 #ifndef TARGET_VERSION
  23 #define TARGET_VERSION  fputs (" (XScale/ELF non-Linux)", stderr);
  24 #endif
  25
  26 #ifndef SUBTARGET_CPU_DEFAULT
  27 #define SUBTARGET_CPU_DEFAULT           TARGET_CPU_xscale
  28 #endif
  29
  30 /* Note - there are three possible -mfpu= arguments that can be passed to
  31    the assembler:
  32
  33      -mfpu=softvfp   This is the default.  It indicates thats doubles are
  34                      stored in a format compatible with the VFP
  35                      specification.  This is the newer double format, whereby
  36                      the endian-ness of the doubles matches the endian-ness
  37                      of the memory architecture.
  38
  39      -mfpu=fpa       This is when -mhard-float is specified.
  40                      [It is not known if any XScale's have been made with
  41                      hardware floating point support, but nevertheless this
  42                      is what happens].
  43
  44      -mfpu=softfpa   This is when -msoft-float is specified.
  45                      This is the normal behavior of other arm configurations,
  46                      which for backwards compatibility purposes default to
  47                      supporting the old FPA format which was always big
  48                      endian, regardless of the endian-ness of the memory
  49                      system.  */
  50
  51 #define SUBTARGET_EXTRA_ASM_SPEC "%{!mcpu=*:-mcpu=xscale} \
  52   %{mhard-float:-mfpu=fpa} \
  53   %{!mhard-float: %{msoft-float:-mfpu=softfpa;:-mfpu=softvfp}}"
  54
  55 #ifndef MULTILIB_DEFAULTS
  56 #define MULTILIB_DEFAULTS \
  57   { "mlittle-endian", "mno-thumb-interwork", "marm", "msoft-float" }
  58 #endif