diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/bits/mathinline.h | 42 |
2 files changed, 34 insertions, 15 deletions
diff --git a/ChangeLog b/ChangeLog index 6a175b5a47..37effa8e18 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2006-11-10 Ulrich Drepper <drepper@redhat.com> + + [BZ #3451] + * sysdeps/i386/fpu/bits/mathinline.h (floor): Make rounding mode + change atomic. + (ceil): Likewise. + 2006-11-10 Jakub Jelinek <jakub@redhat.com> * string/strxfrm_l.c (STRXFRM): Fix trailing \1 optimization diff --git a/sysdeps/i386/fpu/bits/mathinline.h b/sysdeps/i386/fpu/bits/mathinline.h index e04ce95099..8e7a867ec6 100644 --- a/sysdeps/i386/fpu/bits/mathinline.h +++ b/sysdeps/i386/fpu/bits/mathinline.h @@ -1,5 +1,5 @@ /* Inline math functions for i387. - Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004 + Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995. @@ -529,24 +529,36 @@ __inline_mathcodeNP (tanh, __x, \ __inline_mathcodeNP (floor, __x, \ register long double __value; \ - __volatile unsigned short int __cw; \ - __volatile unsigned short int __cwtmp; \ - __asm __volatile ("fnstcw %0" : "=m" (__cw)); \ - __cwtmp = (__cw & 0xf3ff) | 0x0400; /* rounding down */ \ - __asm __volatile ("fldcw %0" : : "m" (__cwtmp)); \ - __asm __volatile ("frndint" : "=t" (__value) : "0" (__x)); \ - __asm __volatile ("fldcw %0" : : "m" (__cw)); \ + register int __ignore; \ + unsigned short int __cw; \ + unsigned short int __cwtmp; \ + __asm __volatile ("fnstcw %4\n\t" \ + "movzwl %4, %1\n\t" \ + "andl $0xf3ff, %1\n\t" \ + "orl $0x0400, %1\n\t" /* rounding down */ \ + "movw %1, %3\n\t" \ + "fldcw %3\n\t" \ + "frndint\n\t" \ + "fldcw %4" \ + : "=t" (__value), "=&q" (__ignore) \ + : "0" (__x), "m" (__cwtmp), "m" (__cw)); \ return __value) __inline_mathcodeNP (ceil, __x, \ register long double __value; \ - __volatile unsigned short int __cw; \ - __volatile unsigned short int __cwtmp; \ - __asm __volatile ("fnstcw %0" : "=m" (__cw)); \ - __cwtmp = (__cw & 0xf3ff) | 0x0800; /* rounding up */ \ - __asm __volatile ("fldcw %0" : : "m" (__cwtmp)); \ - __asm __volatile ("frndint" : "=t" (__value) : "0" (__x)); \ - __asm __volatile ("fldcw %0" : : "m" (__cw)); \ + register int __ignore; \ + unsigned short int __cw; \ + unsigned short int __cwtmp; \ + __asm __volatile ("fnstcw %4\n\t" \ + "movzwl %4, %1\n\t" \ + "andl $0xf3ff, %1\n\t" \ + "orl $0x0800, %1\n\t" /* rounding up */ \ + "movw %1, %3\n\t" \ + "fldcw %3\n\t" \ + "frndint\n\t" \ + "fldcw %4" \ + : "=t" (__value), "=&q" (__ignore) \ + : "0" (__x), "m" (__cwtmp), "m" (__cw)); \ return __value) #ifdef __FAST_MATH__ |