** misplaced entry deleted, see next one
Posted Date : 2007-06-08 05:47:12.0

The problem occurs on both Solaris x64 and Linux, when using any optimisation,
including -xO0, with -g. The following is derived from openmpi-1.2.2:

$ cat inlineasm.c
typedef int          int32_t;
typedef unsigned int uint32_t;

static int opal_atomic_cmpset_32( volatile int32_t *addr,
                                        int32_t oldval, int32_t newval)
{
   unsigned char ret;
   __asm__ __volatile__ (
                       "lock; " "cmpxchgl %1,%2   \n\t"
                               "sete     %0      \n\t"
                       : "=qm" (ret)
                       : "q"(newval), "m"(*((volatile long*)addr)), "a"(oldval)
                       : "memory");

   return (int)ret;
}
$ suncc -xO0 -m64 -g -c inlineasm.c
"inlineasm.c", line 13: warning: parameter in inline asm statement unused: %3
"inlineasm.c", [opal_atomic_cmpset_32]:ube: error: SIGNAL: Segmentation Fault



cat
Posted Date : 2007-06-08 04:15:51.0

N/A

The failure was due to inadequate support for the "q" constraint in ube.
Posted Date : 2007-06-13 15:48:37.0