bfin-pthreads-gcc-constraints.patch

   1 Index: uClibc/libpthread/linuxthreads.old/sysdeps/bfin/pt-machine.h
   2 ===================================================================
   3 --- uClibc/libpthread/linuxthreads.old/sysdeps/bfin/pt-machine.h        (revision 1807)
   4 +++ uClibc/libpthread/linuxthreads.old/sysdeps/bfin/pt-machine.h        (working copy)
   5 @@ -22,7 +22,7 @@
   6  #define _PT_MACHINE_H   1
   7
   8  #ifndef PT_EI
   9 -# define PT_EI extern inline
  10 +# define PT_EI extern inline __attribute__((always_inline))
  11  #endif
  12
  13  extern long int testandset (int *spinlock);
  14 @@ -41,11 +41,11 @@ testandset (int *spinlock)
  15  {
  16      long int res;
  17
  18 -    asm volatile ("R1 = 1; P0 = %2; CALL (%4); %0 = R0;"
  19 -                 : "=d" (res), "=m" (*spinlock)
  20 -                 : "da" (spinlock), "m" (*spinlock),
  21 -                 "a" (ATOMIC_XCHG32)
  22 -                 :"R0", "R1", "P0", "RETS", "cc", "memory");
  23 +    __asm__ __volatile__ (
  24 +               "CALL (%4);"
  25 +               : "=q0" (res), "=m" (*spinlock)
  26 +               : "qA" (spinlock), "m" (*spinlock), "a" (ATOMIC_XCHG32), "q1" (1)
  27 +               : "RETS", "cc", "memory");
  28
  29      return res;
  30  }
  31 @@ -55,18 +55,15 @@ PT_EI int
  32  __compare_and_swap (long int *p, long int oldval, long int newval)
  33  {
  34      long int readval;
  35 -    asm volatile ("P0 = %2;\n\t"
  36 -                 "R1 = %3;\n\t"
  37 -                 "R2 = %4;\n\t"
  38 -                 "CALL (%5);\n\t"
  39 -                 "%0 = R0;\n\t"
  40 -                 : "=da" (readval), "=m" (*p)
  41 -                 : "da" (p),
  42 -                 "da" (oldval),
  43 -                 "da" (newval),
  44 +    __asm__ __volatile__ (
  45 +               "CALL (%5);"
  46 +               : "=q0" (readval), "=m" (*p)
  47 +               : "qA" (p),
  48 +                 "q1" (oldval),
  49 +                 "q2" (newval),
  50                   "a" (ATOMIC_CAS32),
  51                   "m" (*p)
  52 -                 : "P0", "R0", "R1", "R2", "RETS", "memory", "cc");
  53 +               : "RETS", "memory", "cc");
  54      return readval == oldval;
  55  }
  56