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| author | H.J. Lu <hjl.tools@gmail.com> | 2012-06-06 10:11:14 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2012-06-06 10:11:14 -0700 |
| commit | a728a38fb658f8b2f0acbea8a586db8bd054f3fe (patch) | |
| tree | 1ded79da9b33f46cdb0b4b7c32dbf4088b7c52fd /sysdeps/x86_64 | |
| parent | 6e230d11837f3ae7b375ea69d7905f0d18eb79e5 (diff) | |
| download | glibc-a728a38fb658f8b2f0acbea8a586db8bd054f3fe.tar.gz glibc-a728a38fb658f8b2f0acbea8a586db8bd054f3fe.tar.xz glibc-a728a38fb658f8b2f0acbea8a586db8bd054f3fe.zip | |
Check __SSE_MATH__ in x86_64 feraiseexcept
Diffstat (limited to 'sysdeps/x86_64')
| -rw-r--r-- | sysdeps/x86_64/fpu/bits/fenv.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sysdeps/x86_64/fpu/bits/fenv.h b/sysdeps/x86_64/fpu/bits/fenv.h index bb790c936a..b2c01c403f 100644 --- a/sysdeps/x86_64/fpu/bits/fenv.h +++ b/sysdeps/x86_64/fpu/bits/fenv.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1997-2001,2004,2011,2012 Free Software Foundation, Inc. +/* Copyright (C) 1997-2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -109,7 +109,12 @@ __NTH (feraiseexcept (int __excepts)) /* One example of a invalid operation is 0.0 / 0.0. */ float __f = 0.0; +# ifdef __SSE_MATH__ __asm__ __volatile__ ("divss %0, %0 " : : "x" (__f)); +# else + __asm__ __volatile__ ("fdiv %%st, %%st(0); fwait" + : "=t" (__f) : "0" (__f)); +# endif (void) &__f; } if ((FE_DIVBYZERO & __excepts) != 0) @@ -117,7 +122,12 @@ __NTH (feraiseexcept (int __excepts)) float __f = 1.0; float __g = 0.0; +# ifdef __SSE_MATH__ __asm__ __volatile__ ("divss %1, %0" : : "x" (__f), "x" (__g)); +# else + __asm__ __volatile__ ("fdivp %%st, %%st(1); fwait" + : "=t" (__f) : "0" (__f), "u" (__g) : "st(1)"); +# endif (void) &__f; } |