1706f2543Smrg/* 2706f2543Smrg * Copyright (C) 2000 The XFree86 Project, Inc. All Rights Reserved. 3706f2543Smrg * 4706f2543Smrg * Permission is hereby granted, free of charge, to any person obtaining a copy 5706f2543Smrg * of this software and associated documentation files (the "Software"), to 6706f2543Smrg * deal in the Software without restriction, including without limitation the 7706f2543Smrg * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 8706f2543Smrg * sell copies of the Software, and to permit persons to whom the Software is 9706f2543Smrg * furnished to do so, subject to the following conditions: 10706f2543Smrg * 11706f2543Smrg * The above copyright notice and this permission notice shall be included in 12706f2543Smrg * all copies or substantial portions of the Software. 13706f2543Smrg * 14706f2543Smrg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15706f2543Smrg * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16706f2543Smrg * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17706f2543Smrg * XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 18706f2543Smrg * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 19706f2543Smrg * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 20706f2543Smrg * 21706f2543Smrg * Except as contained in this notice, the name of the XFree86 Project shall 22706f2543Smrg * not be used in advertising or otherwise to promote the sale, use or other 23706f2543Smrg * dealings in this Software without prior written authorization from the 24706f2543Smrg * XFree86 Project. 25706f2543Smrg * 26706f2543Smrg */ 27706f2543Smrg 28706f2543Smrg#ifndef _MICOORD_H_ 29706f2543Smrg#define _MICOORD_H_ 1 30706f2543Smrg 31706f2543Smrg#include "servermd.h" 32706f2543Smrg 33706f2543Smrg/* Macros which handle a coordinate in a single register */ 34706f2543Smrg 35706f2543Smrg/* 36706f2543Smrg * Most compilers will convert divisions by 65536 into shifts, if signed 37706f2543Smrg * shifts exist. If your machine does arithmetic shifts and your compiler 38706f2543Smrg * can't get it right, add to this line. 39706f2543Smrg */ 40706f2543Smrg 41706f2543Smrg/* 42706f2543Smrg * mips compiler - what a joke - it CSEs the 65536 constant into a reg 43706f2543Smrg * forcing as to use div instead of shift. Let's be explicit. 44706f2543Smrg */ 45706f2543Smrg 46706f2543Smrg#if defined(mips) || \ 47706f2543Smrg defined(sparc) || defined(__sparc64__) || \ 48706f2543Smrg defined(__alpha) || defined(__alpha__) || \ 49706f2543Smrg defined(__i386__) || defined(__i386) || defined(__ia64__) || \ 50706f2543Smrg defined(__s390x__) || defined(__s390__) || \ 51706f2543Smrg defined(__amd64__) || defined(amd64) || defined(__amd64) 52706f2543Smrg#define GetHighWord(x) (((int) (x)) >> 16) 53706f2543Smrg#else 54706f2543Smrg#define GetHighWord(x) (((int) (x)) / 65536) 55706f2543Smrg#endif 56706f2543Smrg 57706f2543Smrg#if IMAGE_BYTE_ORDER == MSBFirst 58706f2543Smrg#define intToCoord(i,x,y) (((x) = GetHighWord(i)), ((y) = (int) ((short) (i)))) 59706f2543Smrg#define coordToInt(x,y) (((x) << 16) | ((y) & 0xffff)) 60706f2543Smrg#define intToX(i) (GetHighWord(i)) 61706f2543Smrg#define intToY(i) ((int) ((short) i)) 62706f2543Smrg#else 63706f2543Smrg#define intToCoord(i,x,y) (((x) = (int) ((short) (i))), ((y) = GetHighWord(i))) 64706f2543Smrg#define coordToInt(x,y) (((y) << 16) | ((x) & 0xffff)) 65706f2543Smrg#define intToX(i) ((int) ((short) (i))) 66706f2543Smrg#define intToY(i) (GetHighWord(i)) 67706f2543Smrg#endif 68706f2543Smrg 69706f2543Smrg#endif /* _MICOORD_H_ */ 70