| #include <stdint.h> | |
| #define STACK_CHK_GUARD \ | |
| ({ uintptr_t x; asm ("ear %0,%%a0; sllg %0,%0,32; ear %0,%%a1; lg %0,0x28(%0)" : "=a" (x)); x; }) | |
| /* On s390/s390x there is no unique pointer guard, instead we use the | |
| same value as the stack guard. */ | |
| #define POINTER_CHK_GUARD \ | |
| ({ \ | |
| uintptr_t x; \ | |
| asm ("ear %0,%%a0;" \ | |
| "sllg %0,%0,32;" \ | |
| "ear %0,%%a1;" \ | |
| "lg %0,%1(%0)" \ | |
| : "=a" (x) \ | |
| : "i" (offsetof (tcbhead_t, stack_guard))); \ | |
| x; \ | |
| }) |