diff options
Diffstat (limited to 'sysdeps/s390')
| -rw-r--r-- | sysdeps/s390/s390-32/stackguard-macros.h | 11 | ||||
| -rw-r--r-- | sysdeps/s390/s390-64/stackguard-macros.h | 14 |
2 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/stackguard-macros.h b/sysdeps/s390/s390-32/stackguard-macros.h index b74c579..449e8d4 100644 --- a/sysdeps/s390/s390-32/stackguard-macros.h +++ b/sysdeps/s390/s390-32/stackguard-macros.h @@ -2,3 +2,14 @@ #define STACK_CHK_GUARD \ ({ uintptr_t x; asm ("ear %0,%%a0; l %0,0x14(%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; l %0,%1(%0)" \ + : "=a" (x) \ + : "i" (offsetof (tcbhead_t, stack_guard))); \ + x; \ + }) diff --git a/sysdeps/s390/s390-64/stackguard-macros.h b/sysdeps/s390/s390-64/stackguard-macros.h index 0cebb5f..c8270fb 100644 --- a/sysdeps/s390/s390-64/stackguard-macros.h +++ b/sysdeps/s390/s390-64/stackguard-macros.h @@ -2,3 +2,17 @@ #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; \ + }) |