diff options
Diffstat (limited to 'contrib/gcc/config/arm/xscale-elf.h')
| -rw-r--r-- | contrib/gcc/config/arm/xscale-elf.h | 51 |
1 files changed, 37 insertions, 14 deletions
diff --git a/contrib/gcc/config/arm/xscale-elf.h b/contrib/gcc/config/arm/xscale-elf.h index 8ea3588..aea8360 100644 --- a/contrib/gcc/config/arm/xscale-elf.h +++ b/contrib/gcc/config/arm/xscale-elf.h @@ -2,22 +2,22 @@ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. Contributed by Catherine Moore <clm@cygnus.com> -This file is part of GNU CC. + This file is part of GCC. -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. + GCC is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 2, or (at your + option) any later version. -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + GCC is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. -You should have received a copy of the GNU General Public License -along with this program; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING. If not, write to + the Free Software Foundation, 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ /* Run-time Target Specification. */ #ifndef TARGET_VERSION @@ -28,7 +28,30 @@ Boston, MA 02111-1307, USA. */ #define SUBTARGET_CPU_DEFAULT TARGET_CPU_xscale #endif -#define SUBTARGET_EXTRA_ASM_SPEC "%{!mcpu=*:-mcpu=xscale} %{!mhard-float:-mno-fpu}" +/* Note - there are three possible -mfpu= arguments that can be passed to + the assembler: + + -mfpu=softvfp This is the default. It indicates thats doubles are + stored in a format compatible with the VFP + specification. This is the newer double format, whereby + the endian-ness of the doubles matches the endian-ness + of the memory architecture. + + -mfpu=fpa This is when -mhard-float is specified. + [It is not known if any XScale's have been made with + hardware floating point support, but nevertheless this + is what happens]. + + -mfpu=softfpa This is when -msoft-float is specified. + This is the normal behavior of other arm configurations, + which for backwards compatibility purposes default to + supporting the old FPA format which was always big + endian, regardless of the endian-ness of the memory + system. */ + +#define SUBTARGET_EXTRA_ASM_SPEC "%{!mcpu=*:-mcpu=xscale} \ + %{mhard-float:-mfpu=fpa} \ + %{!mhard-float: %{msoft-float:-mfpu=softfpa;:-mfpu=softvfp}}" #ifndef MULTILIB_DEFAULTS #define MULTILIB_DEFAULTS \ |
