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Annotation of kernel/bsd/ppc/setjmp.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*-
        !            26:  * Copyright (c) 1990, 1993
        !            27:  *     The Regents of the University of California.  All rights reserved.
        !            28:  * (c) UNIX System Laboratories, Inc.
        !            29:  * All or some portions of this file are derived from material licensed
        !            30:  * to the University of California by American Telephone and Telegraph
        !            31:  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
        !            32:  * the permission of UNIX System Laboratories, Inc.
        !            33:  *
        !            34:  * Redistribution and use in source and binary forms, with or without
        !            35:  * modification, are permitted provided that the following conditions
        !            36:  * are met:
        !            37:  * 1. Redistributions of source code must retain the above copyright
        !            38:  *    notice, this list of conditions and the following disclaimer.
        !            39:  * 2. Redistributions in binary form must reproduce the above copyright
        !            40:  *    notice, this list of conditions and the following disclaimer in the
        !            41:  *    documentation and/or other materials provided with the distribution.
        !            42:  * 3. All advertising materials mentioning features or use of this software
        !            43:  *    must display the following acknowledgement:
        !            44:  *     This product includes software developed by the University of
        !            45:  *     California, Berkeley and its contributors.
        !            46:  * 4. Neither the name of the University nor the names of its contributors
        !            47:  *    may be used to endorse or promote products derived from this software
        !            48:  *    without specific prior written permission.
        !            49:  *
        !            50:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            51:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            52:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            53:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            54:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            55:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            56:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            57:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            58:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            59:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            60:  * SUCH DAMAGE.
        !            61:  *
        !            62:  *     @(#)setjmp.h    8.2 (Berkeley) 1/21/94
        !            63:  */
        !            64: /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
        !            65:  *
        !            66:  *     File:   ppc/setjmp.h
        !            67:  *
        !            68:  *     Declaration of setjmp routines and data structures.
        !            69:  */
        !            70: #ifndef _BSD_PPC_SETJMP_H_
        !            71: #define _BSD_PPC_SETJMP_H_
        !            72: 
        !            73: #include <sys/cdefs.h>
        !            74: #include <machine/signal.h>
        !            75: 
        !            76: struct _jmp_buf {
        !            77:        struct sigcontext       sigcontext; /* kernel state preserved by set/longjmp */
        !            78:        unsigned long vmask __attribute__((aligned(8))); /* vector mask register */
        !            79:        unsigned long vreg[32 * 4] __attribute__((aligned(16)));
        !            80:                /* 32 128-bit vector registers */
        !            81: };
        !            82: 
        !            83: /*
        !            84:  *     _JBLEN is number of ints required to save the following:
        !            85:  *     r1, r2, r13-r31, lr, cr, ctr, xer, sig  == 26 ints
        !            86:  *     fr14 -  fr31 = 18 doubles = 36 ints
        !            87:  *     vmask, 32 vector registers = 129 ints
        !            88:  *     2 ints to get all the elements aligned 
        !            89:  */
        !            90: 
        !            91: #define _JBLEN (26 + 36 + 129 + 1)
        !            92: 
        !            93: #if defined(_KERNEL)
        !            94: typedef struct sigcontext jmp_buf[1];
        !            95: typedef struct __sigjmp_buf {
        !            96:                int __storage[_JBLEN + 1] __attribute__((aligned(8)));
        !            97:                } sigjmp_buf[1];
        !            98: #else
        !            99: typedef int jmp_buf[_JBLEN];
        !           100: typedef int sigjmp_buf[_JBLEN + 1];
        !           101: #endif
        !           102: 
        !           103: __BEGIN_DECLS
        !           104: extern int setjmp __P((jmp_buf env));
        !           105: extern void longjmp __P((jmp_buf env, int val));
        !           106: 
        !           107: #ifndef _ANSI_SOURCE
        !           108: int sigsetjmp __P((sigjmp_buf env, int val));
        !           109: void siglongjmp __P((sigjmp_buf env, int val));
        !           110: #endif /* _ANSI_SOURCE  */
        !           111: 
        !           112: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
        !           113: int    _setjmp __P((jmp_buf env));
        !           114: void   _longjmp __P((jmp_buf, int val));
        !           115: void   longjmperror __P((void));
        !           116: #endif /* neither ANSI nor POSIX */
        !           117: __END_DECLS
        !           118: 
        !           119: #endif /* !_BSD_PPC_SETJMP_H_ */

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