43 lines
1.2 KiB
Diff
43 lines
1.2 KiB
Diff
commit a728a38fb658f8b2f0acbea8a586db8bd054f3fe
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Wed Jun 6 10:11:14 2012 -0700
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Check __SSE_MATH__ in x86_64 feraiseexcept
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2012-06-06 H.J. Lu <hongjiu.lu@intel.com>
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[BZ #14117]
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* sysdeps/x86_64/fpu/bits/fenv.h (feraiseexcept): Check
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__SSE_MATH__.
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diff --git a/sysdeps/x86_64/fpu/bits/fenv.h b/sysdeps/x86_64/fpu/bits/fenv.h
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index bb790c9..b2c01c4 100644
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--- a/sysdeps/x86_64/fpu/bits/fenv.h
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+++ b/sysdeps/x86_64/fpu/bits/fenv.h
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@@ -109,7 +109,12 @@ __NTH (feraiseexcept (int __excepts))
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/* One example of a invalid operation is 0.0 / 0.0. */
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float __f = 0.0;
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+# ifdef __SSE_MATH__
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__asm__ __volatile__ ("divss %0, %0 " : : "x" (__f));
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+# else
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+ __asm__ __volatile__ ("fdiv %%st, %%st(0); fwait"
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+ : "=t" (__f) : "0" (__f));
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+# endif
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(void) &__f;
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}
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if ((FE_DIVBYZERO & __excepts) != 0)
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@@ -117,7 +122,12 @@ __NTH (feraiseexcept (int __excepts))
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float __f = 1.0;
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float __g = 0.0;
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+# ifdef __SSE_MATH__
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__asm__ __volatile__ ("divss %1, %0" : : "x" (__f), "x" (__g));
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+# else
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+ __asm__ __volatile__ ("fdivp %%st, %%st(1); fwait"
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+ : "=t" (__f) : "0" (__f), "u" (__g) : "st(1)");
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+# endif
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(void) &__f;
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}
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