[S390] 64-bit register support for 31-bit processes

From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Martin Schwidefsky <schwidefsky@de.ibm.com>

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/s390/include/asm/ucontext.h b/arch/s390/include/asm/ucontext.h
index d69bec0b03f5..cfb874e66c9a 100644
--- a/arch/s390/include/asm/ucontext.h
+++ b/arch/s390/include/asm/ucontext.h
@@ -9,6 +9,21 @@
 #ifndef _ASM_S390_UCONTEXT_H
 #define _ASM_S390_UCONTEXT_H
 
+#define UC_EXTENDED     0x00000001
+
+#ifndef __s390x__
+
+struct ucontext_extended {
+        unsigned long     uc_flags;
+        struct ucontext  *uc_link;
+        stack_t           uc_stack;
+        _sigregs          uc_mcontext;
+        unsigned long     uc_sigmask[2];
+        unsigned long     uc_gprs_high[16];
+};
+
+#endif
+
 struct ucontext {
         unsigned long     uc_flags;
         struct ucontext  *uc_link;