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Diffstat (limited to 'REORG.TODO/sysdeps/s390/s390-64/stackguard-macros.h')
-rw-r--r--REORG.TODO/sysdeps/s390/s390-64/stackguard-macros.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/s390/s390-64/stackguard-macros.h b/REORG.TODO/sysdeps/s390/s390-64/stackguard-macros.h
new file mode 100644
index 0000000000..2c97d3824f
--- /dev/null
+++ b/REORG.TODO/sysdeps/s390/s390-64/stackguard-macros.h
@@ -0,0 +1,18 @@
+#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;								\
+  })