diff --git a/include/asm-sparc64/user.h b/include/asm-sparc64/user.h
new file mode 100644
index 0000000..fce4e85
--- /dev/null
+++ b/include/asm-sparc64/user.h
@@ -0,0 +1,60 @@
+/* $Id: user.h,v 1.1 1996/12/26 14:22:44 davem Exp $
+ * asm-sparc64/user.h: Core file definitions for the Sparc.
+ *
+ * Keep in sync with reg.h.  Actually, we could get rid of this
+ * one, since we won't a.out core dump that much anyways - miguel.
+ * Copyright (C) 1995 (davem@caip.rutgers.edu)
+ */
+#ifndef _SPARC64_USER_H
+#define _SPARC64_USER_H
+
+#include <asm/a.out.h>
+struct sunos_regs {
+	unsigned int psr, pc, npc, y;
+	unsigned int regs[15];
+};
+
+struct sunos_fpqueue {
+	unsigned int *addr;
+	unsigned int inst;
+};
+
+struct sunos_fp {
+	union {
+		unsigned int regs[32];
+		double reg_dbls[16];
+	} fregs;
+	unsigned int fsr;
+	unsigned int flags;
+	unsigned int extra;
+	unsigned int fpq_count;
+	struct sunos_fpqueue fpq[16];
+};
+
+struct sunos_fpu {
+	struct sunos_fp fpstatus;
+};
+
+/* The SunOS core file header layout. */
+struct user {
+	unsigned int magic;
+	unsigned int len;
+	struct sunos_regs regs;
+	struct exec uexec;
+	int           signal;
+	size_t        u_tsize; /* all of these in bytes! */
+	size_t        u_dsize;
+	size_t        u_ssize;
+	char          u_comm[17];
+	struct sunos_fpu fpu;
+	unsigned int  sigcode;   /* Special sigcontext subcode, if any */
+};
+
+#define NBPG                   PAGE_SIZE /* XXX 4096 maybe? */
+#define UPAGES                 1
+#define HOST_TEXT_START_ADDR   (u.start_code)
+#define HOST_DATA_START_ADDR   (u.start_data)
+#define HOST_STACK_END_ADDR    (u.start_stack + u.u_ssize * NBPG)
+#define SUNOS_CORE_MAGIC       0x080456
+
+#endif /* !(_SPARC64_USER_H) */