elf/stackguard-macros.h

   1 #include <stdint.h>
   2
   3 #ifdef __i386__
   4 # define STACK_CHK_GUARD \
   5   ({ uintptr_t x; asm ("movl %%gs:0x14, %0" : "=r" (x)); x; })
   6 #elif defined __x86_64__
   7 # define STACK_CHK_GUARD \
   8   ({ uintptr_t x; asm ("movq %%fs:0x28, %0" : "=r" (x)); x; })
   9 #elif defined __powerpc64__
  10 # define STACK_CHK_GUARD \
  11   ({ uintptr_t x; asm ("ld %0,-28688(13)" : "=r" (x)); x; })
  12 #elif defined __powerpc__
  13 # define STACK_CHK_GUARD \
  14   ({ uintptr_t x; asm ("lwz %0,-28680(2)" : "=r" (x)); x; })
  15 #elif defined __sparc__ && defined __arch64__
  16 # define STACK_CHK_GUARD \
  17   ({ uintptr_t x; asm ("ldx [%%g7+0x28], %0" : "=r" (x)); x; })
  18 #elif defined __sparc__
  19 # define STACK_CHK_GUARD \
  20   ({ uintptr_t x; asm ("ld [%%g7+0x14], %0" : "=r" (x)); x; })
  21 #elif defined __s390x__
  22 # define STACK_CHK_GUARD \
  23   ({ uintptr_t x; asm ("ear %0,%%a0; sllg %0,%0,32; ear %0,%%a1; lg %0,0x28(%0)" : "=a" (x)); x; })
  24 #elif defined __s390__
  25 # define STACK_CHK_GUARD \
  26   ({ uintptr_t x; asm ("ear %0,%%a0; l %0,0x14(%0)" : "=a" (x)); x; })
  27 #elif !defined STACK_CHK_GUARD
  28 extern uintptr_t __stack_chk_guard;
  29 # define STACK_CHK_GUARD __stack_chk_guard
  30 #endif