ap/libc/glibc/glibc-2.23/sysdeps/sparc/sparc64/stackguard-macros.h

#include <stdint.h>

#define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("ldx [%%g7+0x28], %0" : "=r" (x)); x; })

#define POINTER_CHK_GUARD \
  ({ uintptr_t x; asm ("ldx [%%g7+0x30], %0" : "=r" (x)); x; })