sysdeps/i386/stackguard-macros.h

   1 #include <stdint.h>
   2
   3 #define STACK_CHK_GUARD \
   4   ({ uintptr_t x; asm ("movl %%gs:0x14, %0" : "=r" (x)); x; })
   5
   6 #define POINTER_CHK_GUARD \
   7   ({                                                    \
   8      uintptr_t x;                                       \
   9      asm ("movl %%gs:%c1, %0" : "=r" (x)                \
  10           : "i" (offsetof (tcbhead_t, pointer_guard))); \
  11      x;                                                 \
  12    })