File: getprio.c

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#include <errno.h>
#include <sys/resource.h>
#include <sys/syscall.h>

#define	PZERO	15

int
getpriority(int which, int who)
{
   long res;
     
	__asm__ volatile ("or %%g0, %0, %%g1\n\t"
			  "or %%g0, %1, %%o0\n\t"
			  "or %%g0, %2, %%o1\n\t"
			  "t 0x10\n\t"
			  "or %%o0, %%g0, %0\n\t"
			  : "=r" (res), "=r" ((long)which), "=r" ((long)who)
			  : "0" ((long) SYS_getpriority),
			    "1" ((long) which), "2" ((long)who)
			  : "g1", "o0", "o1"
			  );
        if (res >= 0) {
		errno = 0;
                return (int) PZERO - res;
        }
        errno = -res;
        return -1;
}