diff options
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/ChangeLog | 9 | ||||
| -rw-r--r-- | libgcc/config.host | 12 | ||||
| -rw-r--r-- | libgcc/config/i386/crtprec.c | 47 | ||||
| -rw-r--r-- | libgcc/config/i386/t-crtpc | 6 |
4 files changed, 65 insertions, 9 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 401287c..49fed6e 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,5 +1,14 @@ 2011-07-13 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> + * config/i386/crtprec.c: New file. + * config/i386/t-crtpc: Use $(srcdir) to refer to crtprec.c. + * config.host (i[34567]86-*-darwin*): Add i386/t-crtpc to tmake_file. + Add crtprec32.o, crtprec64.o, crtprec80.o to extra_parts. + (x86_64-*-darwin*): Likewise. + (i[34567]86-*-solaris2*: Likewise. + +2011-07-13 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> + * config/alpha/crtfastmath.c: New file. * config/i386/crtfastmath.c: New file. * config/ia64/crtfastmath.c: New file. diff --git a/libgcc/config.host b/libgcc/config.host index fba7ecd..63c4dcc 100644 --- a/libgcc/config.host +++ b/libgcc/config.host @@ -325,12 +325,12 @@ hppa[12]*-*-hpux11*) md_unwind_header=pa/hpux-unwind.h ;; i[34567]86-*-darwin*) - tmake_file="$tmake_file i386/t-crtfm" - extra_parts="$extra_parts crtfastmath.o" + tmake_file="$tmake_file i386/t-crtpc i386/t-crtfm" + extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o" ;; x86_64-*-darwin*) - tmake_file="t-darwin ${cpu_type}/t-darwin64 i386/t-crtfm t-slibgcc-darwin" - extra_parts="$extra_parts crtfastmath.o" + tmake_file="t-darwin ${cpu_type}/t-darwin64 i386/t-crtpc i386/t-crtfm t-slibgcc-darwin" + extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o" ;; i[34567]86-*-elf*) ;; @@ -387,8 +387,8 @@ i[34567]86-*-rtems*) tmake_file="${tmake_file} t-crtin i386/t-softfp i386/t-crtstuff t-rtems" ;; i[34567]86-*-solaris2* | x86_64-*-solaris2.1[0-9]*) - tmake_file="$tmake_file i386/t-crtfm" - extra_parts="$extra_parts crtfastmath.o" + tmake_file="$tmake_file i386/t-crtpc i386/t-crtfm" + extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o" md_unwind_header=i386/sol2-unwind.h ;; i[4567]86-wrs-vxworks|i[4567]86-wrs-vxworksae) diff --git a/libgcc/config/i386/crtprec.c b/libgcc/config/i386/crtprec.c new file mode 100644 index 0000000..4f42a8f --- /dev/null +++ b/libgcc/config/i386/crtprec.c @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2007, 2009 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/>. + */ + +#if __PREC == 32 + #define X87CW (0 << 8) /* Single precision (24 bits) */ +#elif __PREC == 64 + #define X87CW (2 << 8) /* Double precision (53 bits) */ +#elif __PREC == 80 + #define X87CW (3 << 8) /* Extended precision (64 bits) */ +#else + #error "Wrong precision requested." +#endif + +#define X87CW_PCMASK (3 << 8) + +static void __attribute__((constructor)) +set_precision (void) +{ + unsigned short int cwd; + + asm volatile ("fstcw\t%0" : "=m" (cwd)); + + cwd &= ~X87CW_PCMASK; + cwd |= X87CW; + + asm volatile ("fldcw\t%0" : : "m" (cwd)); +} diff --git a/libgcc/config/i386/t-crtpc b/libgcc/config/i386/t-crtpc index c231ce1..b605f6f 100644 --- a/libgcc/config/i386/t-crtpc +++ b/libgcc/config/i386/t-crtpc @@ -1,8 +1,8 @@ -crtprec32.o: $(gcc_srcdir)/config/i386/crtprec.c +crtprec32.o: $(srcdir)/config/i386/crtprec.c $(gcc_compile) -D__PREC=32 -c $< -crtprec64.o: $(gcc_srcdir)/config/i386/crtprec.c +crtprec64.o: $(srcdir)/config/i386/crtprec.c $(gcc_compile) -D__PREC=64 -c $< -crtprec80.o: $(gcc_srcdir)/config/i386/crtprec.c +crtprec80.o: $(srcdir)/config/i386/crtprec.c $(gcc_compile) -D__PREC=80 -c $< |