patches/glibc/2.6/160-use_short_for_fnstsw.patch
author "Frederic Roussel" <fr.frasc@gmail.com>
Wed Feb 06 13:11:46 2013 -0800 (2013-02-06)
changeset 3182 7209c64d2318
parent 607 aaf7ae5cb11a
permissions -rw-r--r--
libc/glibc: add patch to fix build for PowerPC64.

For a PowerPC64 build, avoid erroneous inline optimization of initfini.s

Signed-off-by: "Frederic R. ROUSSEL" <fr.frasc@gmail.com>
Message-Id: <7585f649ad60b23c4a31.1360185227@x58>
Patchwork-Id: 218755
     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.  */