/*
* 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 */