| 1 | /*␊ |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * ␊ |
| 5 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 6 | * as defined in and that are subject to the Apple Public Source License␊ |
| 7 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 8 | * compliance with the License. Please obtain a copy of the License at␊ |
| 9 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
| 10 | * file.␊ |
| 11 | * ␊ |
| 12 | * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 17 | * Please see the License for the specific language governing rights and␊ |
| 18 | * limitations under the License.␊ |
| 19 | * ␊ |
| 20 | * Copyright (c) 1996 NeXT Software, Inc.␊ |
| 21 | *␊ |
| 22 | *␉File:␉architecture/ppc/alignment.h␊ |
| 23 | ␊ |
| 24 | * Natural alignment of shorts and longs (for ppc)␊ |
| 25 | *␊ |
| 26 | * HISTORY␊ |
| 27 | *␊ |
| 28 | * 29-Dec-96 Umesh Vaishampayan (umeshv@NeXT.com)␊ |
| 29 | *␉Ported from m98k.␊ |
| 30 | * 2 Sept 1992 Brian Raymor at NeXT␊ |
| 31 | * Moved over to architecture.␊ |
| 32 | * 17 August 1992 Jack Greenfield at NeXT␊ |
| 33 | *␉Created.␊ |
| 34 | */␊ |
| 35 | ␊ |
| 36 | __inline__ static unsigned short ␊ |
| 37 | get_align_short(void *ivalue)␊ |
| 38 | {␊ |
| 39 | unsigned short␉ovalue = ((unsigned char *) ivalue)[0];␊ |
| 40 | ␊ |
| 41 | ovalue <<= 8 * sizeof(unsigned char);␊ |
| 42 | return ovalue + ((unsigned char *) ivalue)[1];␊ |
| 43 | }␊ |
| 44 | ␊ |
| 45 | __inline__ static unsigned short ␊ |
| 46 | put_align_short(unsigned short ivalue, void *ovalue)␊ |
| 47 | {␊ |
| 48 | unsigned short␉*tvalue = &ivalue;␊ |
| 49 | ␊ |
| 50 | ((unsigned char *) ovalue)[0] = ((unsigned char *) tvalue)[0];␊ |
| 51 | ((unsigned char *) ovalue)[1] = ((unsigned char *) tvalue)[1];␊ |
| 52 | return ivalue;␊ |
| 53 | }␊ |
| 54 | ␊ |
| 55 | __inline__ static unsigned long ␊ |
| 56 | get_align_long(void *ivalue)␊ |
| 57 | {␊ |
| 58 | unsigned long␉ovalue = get_align_short(ivalue);␊ |
| 59 | ␊ |
| 60 | ovalue <<= 8 * sizeof(unsigned short);␊ |
| 61 | return ovalue + get_align_short(((unsigned char *) ivalue) + sizeof(short));␊ |
| 62 | }␊ |
| 63 | ␊ |
| 64 | __inline__ static unsigned long ␊ |
| 65 | put_align_long(unsigned long ivalue, void *ovalue)␊ |
| 66 | {␊ |
| 67 | unsigned long␉*tvalue = &ivalue;␊ |
| 68 | ␊ |
| 69 | ((unsigned char *) ovalue)[0] = ((unsigned char *) tvalue)[0];␊ |
| 70 | ((unsigned char *) ovalue)[1] = ((unsigned char *) tvalue)[1];␊ |
| 71 | ((unsigned char *) ovalue)[2] = ((unsigned char *) tvalue)[2];␊ |
| 72 | ((unsigned char *) ovalue)[3] = ((unsigned char *) tvalue)[3];␊ |
| 73 | return ivalue;␊ |
| 74 | }␊ |
| 75 | ␊ |
| 76 | |
