diff options
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/ChangeLog | 7 | ||||
| -rw-r--r-- | libgcc/config.host | 6 | ||||
| -rw-r--r-- | libgcc/config/aarch64/crtfastmath.c | 36 |
3 files changed, 47 insertions, 2 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 531bdca..317dc29 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,10 @@ +2014-09-09 Marcus Shawcroft <marcus.shawcroft@arm.com> + Ramana Radhakrishnan <ramana.radhakrishnan@arm.com> + + * config.host (aarch64*): Include crtfastmath.o and + t-crtfm. + * config/aarch64/crtfastmath.c: New file. + 2014-09-08 Trevor Saunders <tsaunders@mozilla.com> * config.host: Remove picochip support. diff --git a/libgcc/config.host b/libgcc/config.host index 6ea1887..2f6569b 100644 --- a/libgcc/config.host +++ b/libgcc/config.host @@ -322,13 +322,15 @@ esac case ${host} in aarch64*-*-elf) extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o" + extra_parts="$extra_parts crtfastmath.o" tmake_file="${tmake_file} ${cpu_type}/t-aarch64" - tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp" + tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm" ;; aarch64*-*-linux*) + extra_parts="$extra_parts crtfastmath.o" md_unwind_header=aarch64/linux-unwind.h tmake_file="${tmake_file} ${cpu_type}/t-aarch64" - tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp" + tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm" ;; alpha*-*-linux*) tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee t-crtfm alpha/t-linux" diff --git a/libgcc/config/aarch64/crtfastmath.c b/libgcc/config/aarch64/crtfastmath.c new file mode 100644 index 0000000..3a8ddfc --- /dev/null +++ b/libgcc/config/aarch64/crtfastmath.c @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2014 Free Software Foundation, Inc. + * + * This file 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 3, or (at your option) any + * later version. + * + * This file 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. + * + * Under Section 7 of GPL version 3, you are granted additional + * permissions described in the GCC Runtime Library Exception, version + * 3.1, as published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License and + * a copy of the GCC Runtime Library Exception along with this program; + * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + * <http://www.gnu.org/licenses/>. + */ + +#define _FPU_FPCR_FZ 0x1000000 + +#define _FPU_SETCW(fpcr) \ + { \ + __asm__ __volatile__ ("msr fpcr, %0" : : "r" (fpcr)); \ + } + +static void __attribute__((constructor)) +set_fast_math (void) +{ + /* Flush to zero, round to nearest, IEEE exceptions disabled. */ + _FPU_SETCW (_FPU_FPCR_FZ); +} |