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Annotation of XNU/bsd/ppc/setjmp.h, revision 1.1.1.1

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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