glibc-hppa-tighter-atomic-constraints.patch

   1 With some code compiled with -fPIC -O1, gcc may use a "register(register)"
   2 format when stw can only take "constant(register)" ... so change the
   3 constraint to match this requirement.
   4
   5 2007-02-10  Mike Frysinger  <vapier@gentoo.org>
   6
   7         * sysdeps/unix/sysv/linux/hppa/bits/atomic.h
   8         (atomic_compare_and_exchange_val_acq): Change `m' constraint to an
   9         `o' memory constraint for first two input operands.
  10
  11 --- ports/sysdeps/unix/sysv/linux/hppa/bits/atomic.h
  12 +++ ports/sysdeps/unix/sysv/linux/hppa/bits/atomic.h
  13 @@ -76,7 +76,7 @@ typedef uintmax_t uatomic_max_t;
  14         "stw    %%r28, %0                       \n\t"                   \
  15          "sub   %%r0, %%r21, %%r21              \n\t"                   \
  16         "stw    %%r21, %1                       \n\t"                   \
  17 -       : "=m" (lws_ret), "=m" (lws_errno), "=m" (*mem)                 \
  18 +       : "=o" (lws_ret), "=o" (lws_errno), "=m" (*mem)                 \
  19          : "r" (mem), "r" (oldval), "r" (newval)                                \
  20         : LWS_CLOBBER                                                   \
  21       );                                                                        \