[Feature][T106]ZXW P56U09 code
Only Configure: Yes
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: No
Doc Update: No
Change-Id: I3cbd8b420271eb20c2b40ebe5c78f83059cd42f3
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/s390/s390-64/stackguard-macros.h b/ap/libc/glibc/glibc-2.23/sysdeps/s390/s390-64/stackguard-macros.h
new file mode 100644
index 0000000..2c97d38
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/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; \
+ })