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patches/glibc/2.5.1/160-use_short_for_fnstsw.patch
author Zhenqiang Chen <zhenqiang.chen@linaro.org>
Wed Dec 07 16:15:50 2011 +0800 (2011-12-07)
branch1.13
changeset 2844 78145960027e
parent 607 aaf7ae5cb11a
permissions -rw-r--r--
scripts: create CT_HEADERS_DIR

"${CT_SYSROOT_DIR}/usr/include" is only for "${CT_USE_SYSROOT}" = "y".
We should also mkdir when "${CT_USE_SYSROOT}" != "y".
"${CT_HEADERS_DIR}" can support both cases.

Signed-off-by: Zhenqiang Chen <zhenqiang.chen@linaro.org>
(transplanted from bdff4164a1227ebdd538e0ad3c9b6862b3c5a253) 
     1 Original patch from H.J. Lu, as reported there:

     2 http://www.nabble.com/PATCH:-Use-short-for-fnstsw-td14775171.html

     3 

     4 fnstsw stores 16bit into %ax. The upper 16bit of %eax is unchanged.

     5 The new assembler (binutils-2.18.50.0.4 and up) will disallow "fnstsw %eax".

     6 

     7 diff -dur glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c

     8 --- glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c	2004-03-05 11:14:48.000000000 +0100

     9 +++ glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c	2008-06-24 10:56:14.000000000 +0200

    10 @@ -26,7 +26,7 @@

    11  int

    12  fetestexcept (int excepts)

    13  {

    14 -  int temp;

    15 +  short temp;

    16    int xtemp = 0;

    17  

    18    /* Get current exceptions.  */
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