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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
        !            23:  *
        !            24:  *     File:   ppc/setjmp.h
        !            25:  *
        !            26:  *     Declaration of setjmp routines and data structures.
        !            27:  */
        !            28: #ifndef _BSD_PPC_SETJMP_H_
        !            29: #define _BSD_PPC_SETJMP_H_
        !            30: 
        !            31: #include <sys/cdefs.h>
        !            32: #include <machine/signal.h>
        !            33: 
        !            34: struct _jmp_buf {
        !            35:        struct sigcontext       sigcontext; /* kernel state preserved by set/longjmp */
        !            36:        unsigned long vmask __attribute__((aligned(8))); /* vector mask register */
        !            37:        unsigned long vreg[32 * 4] __attribute__((aligned(16)));
        !            38:                /* 32 128-bit vector registers */
        !            39: };
        !            40: 
        !            41: /*
        !            42:  *     _JBLEN is number of ints required to save the following:
        !            43:  *     r1, r2, r13-r31, lr, cr, ctr, xer, sig  == 26 ints
        !            44:  *     fr14 -  fr31 = 18 doubles = 36 ints
        !            45:  *     vmask, 32 vector registers = 129 ints
        !            46:  *     2 ints to get all the elements aligned 
        !            47:  */
        !            48: 
        !            49: #define _JBLEN (26 + 36 + 129 + 1)
        !            50: 
        !            51: #if defined(KERNEL)
        !            52: typedef struct sigcontext jmp_buf[1];
        !            53: typedef struct __sigjmp_buf {
        !            54:                int __storage[_JBLEN + 1] __attribute__((aligned(8)));
        !            55:                } sigjmp_buf[1];
        !            56: #else
        !            57: typedef int jmp_buf[_JBLEN];
        !            58: typedef int sigjmp_buf[_JBLEN + 1];
        !            59: #endif
        !            60: 
        !            61: __BEGIN_DECLS
        !            62: extern int setjmp __P((jmp_buf env));
        !            63: extern void longjmp __P((jmp_buf env, int val));
        !            64: 
        !            65: #ifndef _ANSI_SOURCE
        !            66: int sigsetjmp __P((sigjmp_buf env, int val));
        !            67: void siglongjmp __P((sigjmp_buf env, int val));
        !            68: #endif /* _ANSI_SOURCE  */
        !            69: 
        !            70: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
        !            71: int    _setjmp __P((jmp_buf env));
        !            72: void   _longjmp __P((jmp_buf, int val));
        !            73: void   longjmperror __P((void));
        !            74: #endif /* neither ANSI nor POSIX */
        !            75: __END_DECLS
        !            76: 
        !            77: #endif /* !_BSD_PPC_SETJMP_H_ */

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