src/patches/glibc/glibc-rh929388.patch

   1 diff -pruN glibc-2.5-20061008T1257/sysdeps/x86_64/fpu/math_private.h glibc-2.5-20061008T1257.patched/sysdeps/x86_64/fpu/math_private.h
   2 --- glibc-2.5-20061008T1257/sysdeps/x86_64/fpu/math_private.h   2013-02-12 07:05:08.000000000 -0500
   3 +++ glibc-2.5-20061008T1257.patched/sysdeps/x86_64/fpu/math_private.h   2013-02-12 06:59:08.000000000 -0500
   4 @@ -90,10 +90,14 @@ while (0)
   5  #undef libc_feupdateenv
   6  #define libc_feupdateenv(e) \
   7    do {                                                                       \
   8 -    unsigned int mxcsr;                                                              \
   9 +    unsigned int mxcsr, new_mxcsr;                                           \
  10      asm volatile ("stmxcsr %0" : "=m" (*&mxcsr));                            \
  11 -    asm volatile ("ldmxcsr %0" : : "m" ((e)->__mxcsr));                              \
  12 -    feraiseexcept (mxcsr & FE_ALL_EXCEPT);                                   \
  13 +    /* Merge in the old exceptions.  */                                              \
  14 +    new_mxcsr = mxcsr & FE_ALL_EXCEPT | (e)->__mxcsr;                        \
  15 +    asm volatile ("ldmxcsr %0" : : "m" (*&new_mxcsr));                       \
  16 +    /* Only raise exception if there are any that are not masked.  */        \
  17 +    if (~(mxcsr >> 7) & mxcsr & FE_ALL_EXCEPT)                               \
  18 +      feraiseexcept (mxcsr & FE_ALL_EXCEPT);                                 \
  19    } while (0)
  20  #undef libc_feupdateenvf
  21  #define libc_feupdateenvf(e) libc_feupdateenv (e)