patches/glibc/2.5.1/160-use_short_for_fnstsw.patch
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"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> |
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Sat Oct 03 18:49:23 2009 +0200 (2009-10-03) |
| changeset 1560 |
79a609170a83 |
| parent 607 |
aaf7ae5cb11a
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| permissions |
-rw-r--r-- |
configure: split has_or_abort in two: one to check, one to abort
Split the has_or_abort function in two:
- one that checks if the tool if found,
- one that calls the above check, and aborts if not found
The rational behind this is to be able to check for a tool
and if not found, fallback to using our bundled version,
should the need arise (and I get time).
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yann@607
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Original patch from H.J. Lu, as reported there:
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yann@607
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http://www.nabble.com/PATCH:-Use-short-for-fnstsw-td14775171.html
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yann@607
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yann@607
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fnstsw stores 16bit into %ax. The upper 16bit of %eax is unchanged.
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yann@607
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The new assembler (binutils-2.18.50.0.4 and up) will disallow "fnstsw %eax".
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yann@607
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yann@607
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diff -dur glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c
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yann@607
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--- glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c 2004-03-05 11:14:48.000000000 +0100
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yann@607
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+++ glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c 2008-06-24 10:56:14.000000000 +0200
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yann@607
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@@ -26,7 +26,7 @@
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yann@607
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int
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yann@607
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fetestexcept (int excepts)
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yann@607
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{
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- int temp;
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yann@607
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+ short temp;
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yann@607
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int xtemp = 0;
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yann@607
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yann@607
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/* Get current exceptions. */
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