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-rw-r--r--include/asm-x86/ucontext.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86/ucontext.h b/include/asm-x86/ucontext.h
index 9948dd32808..89eaa5456a7 100644
--- a/include/asm-x86/ucontext.h
+++ b/include/asm-x86/ucontext.h
@@ -1,6 +1,12 @@
#ifndef ASM_X86__UCONTEXT_H
#define ASM_X86__UCONTEXT_H
+#define UC_FP_XSTATE 0x1 /* indicates the presence of extended state
+ * information in the memory layout pointed
+ * by the fpstate pointer in the ucontext's
+ * sigcontext struct (uc_mcontext).
+ */
+
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;