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Annotation of sys/arch/sparc/include/frame.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: frame.h,v 1.3 2003/06/02 23:27:54 millert Exp $       */
        !             2: /*     $NetBSD: frame.h,v 1.2 1994/11/20 20:53:07 deraadt Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1992, 1993
        !             6:  *     The Regents of the University of California.  All rights reserved.
        !             7:  *
        !             8:  * This software was developed by the Computer Systems Engineering group
        !             9:  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
        !            10:  * contributed to Berkeley.
        !            11:  *
        !            12:  * All advertising materials mentioning features or use of this software
        !            13:  * must display the following acknowledgement:
        !            14:  *     This product includes software developed by the University of
        !            15:  *     California, Lawrence Berkeley Laboratory.
        !            16:  *
        !            17:  * Redistribution and use in source and binary forms, with or without
        !            18:  * modification, are permitted provided that the following conditions
        !            19:  * are met:
        !            20:  * 1. Redistributions of source code must retain the above copyright
        !            21:  *    notice, this list of conditions and the following disclaimer.
        !            22:  * 2. Redistributions in binary form must reproduce the above copyright
        !            23:  *    notice, this list of conditions and the following disclaimer in the
        !            24:  *    documentation and/or other materials provided with the distribution.
        !            25:  * 3. Neither the name of the University nor the names of its contributors
        !            26:  *    may be used to endorse or promote products derived from this software
        !            27:  *    without specific prior written permission.
        !            28:  *
        !            29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            39:  * SUCH DAMAGE.
        !            40:  *
        !            41:  *     @(#)frame.h     8.1 (Berkeley) 6/11/93
        !            42:  */
        !            43:
        !            44: /*
        !            45:  * Sparc stack frame format.
        !            46:  *
        !            47:  * Note that the contents of each stack frame may be held only in
        !            48:  * machine register windows.  In order to get an accurate picture
        !            49:  * of the frame, you must first force the kernel to write any such
        !            50:  * windows to the stack.
        !            51:  */
        !            52: struct frame {
        !            53:        int     fr_local[8];    /* space to save locals (%l0..%l7) */
        !            54:        int     fr_arg[6];      /* space to save arguments (%i0..%i5) */
        !            55:        struct  frame *fr_fp;   /* space to save frame pointer (%i6) */
        !            56:        int     fr_pc;          /* space to save return pc (%i7) */
        !            57:        /*
        !            58:         * SunOS reserves another 8 words here; this is pointless
        !            59:         * but we do it for compatibility.
        !            60:         */
        !            61:        int     fr_xxx;         /* `structure return pointer' (unused) */
        !            62:        int     fr_argd[6];     /* `arg dump area' (lunacy) */
        !            63:        int     fr_argx[1];     /* arg extension (args 7..n; variable size) */
        !            64: };