1  #include <stdint.h>
       2  
       3  #define STACK_CHK_GUARD \
       4    ({ uintptr_t x; __asm__ ("ear %0,%%a0; sllg %0,%0,32; ear %0,%%a1; lg %0,0x28(%0)" : "=a" (x)); x; })
       5  
       6  /* On s390/s390x there is no unique pointer guard, instead we use the
       7     same value as the stack guard.  */
       8  #define POINTER_CHK_GUARD					\
       9    ({								\
      10      uintptr_t x;						\
      11      __asm__ ("ear %0,%%a0;"					\
      12  	     "sllg %0,%0,32;"					\
      13  	     "ear %0,%%a1;"					\
      14  	     "lg %0,%1(%0)"					\
      15  	     : "=a" (x)						\
      16  	     : "i" (offsetof (tcbhead_t, stack_guard)));	\
      17      x;								\
      18    })