OpenSolaris Launch

1 files changed, 77 insertions, 0 deletions

diff --git a/usr/src/uts/intel/sys/frame.h b/usr/src/uts/intel/sys/frame.h
new file mode 100644
index 0000000000..5494ce82d0
--- /dev/null
+++ b/usr/src/uts/intel/sys/frame.h
@@ -0,0 +1,77 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_FRAME_H
+#define	_SYS_FRAME_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/regset.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * In the Intel world, a stack frame looks like this:
+ *
+ * %fp0->|				 |
+ *	 |-------------------------------|
+ *	 |  Args to next subroutine	 |
+ *	 |-------------------------------|-\
+ * %sp0->|  One word struct-ret address	 | |
+ *	 |-------------------------------|  > minimum stack frame
+ * %fp1->|  Previous frame pointer (%fp0)| |
+ *	 |-------------------------------|-/
+ *	 |  Local variables		 |
+ * %sp1->|-------------------------------|
+ *
+ * For amd64, the minimum stack frame is 16 bytes and the frame pointer must
+ * be 16-byte aligned.
+ */
+
+struct frame {
+	greg_t	fr_savfp;		/* saved frame pointer */
+	greg_t	fr_savpc;		/* saved program counter */
+};
+
+#ifdef _SYSCALL32
+
+/*
+ * Kernel's view of a 32-bit stack frame.
+ */
+struct frame32 {
+	greg32_t fr_savfp;		/* saved frame pointer */
+	greg32_t fr_savpc;		/* saved program counter */
+};
+
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_FRAME_H */