| 1 | /*
|
|---|
| 2 | * Copyright (C) 2000 The XFree86 Project, Inc. All Rights Reserved.
|
|---|
| 3 | *
|
|---|
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
|---|
| 5 | * of this software and associated documentation files (the "Software"), to
|
|---|
| 6 | * deal in the Software without restriction, including without limitation the
|
|---|
| 7 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|---|
| 8 | * sell copies of the Software, and to permit persons to whom the Software is
|
|---|
| 9 | * furnished to do so, subject to the following conditions:
|
|---|
| 10 | *
|
|---|
| 11 | * The above copyright notice and this permission notice shall be included in
|
|---|
| 12 | * all copies or substantial portions of the Software.
|
|---|
| 13 | *
|
|---|
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|---|
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|---|
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|---|
| 17 | * XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|---|
| 18 | * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|---|
| 19 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|---|
| 20 | *
|
|---|
| 21 | * Except as contained in this notice, the name of the XFree86 Project shall
|
|---|
| 22 | * not be used in advertising or otherwise to promote the sale, use or other
|
|---|
| 23 | * dealings in this Software without prior written authorization from the
|
|---|
| 24 | * XFree86 Project.
|
|---|
| 25 | *
|
|---|
| 26 | */
|
|---|
| 27 |
|
|---|
| 28 | #ifndef _MICOORD_H_
|
|---|
| 29 | #define _MICOORD_H_ 1
|
|---|
| 30 |
|
|---|
| 31 | #include "servermd.h"
|
|---|
| 32 |
|
|---|
| 33 | /* Macros which handle a coordinate in a single register */
|
|---|
| 34 |
|
|---|
| 35 | /*
|
|---|
| 36 | * Most compilers will convert divisions by 65536 into shifts, if signed
|
|---|
| 37 | * shifts exist. If your machine does arithmetic shifts and your compiler
|
|---|
| 38 | * can't get it right, add to this line.
|
|---|
| 39 | */
|
|---|
| 40 |
|
|---|
| 41 | /*
|
|---|
| 42 | * mips compiler - what a joke - it CSEs the 65536 constant into a reg
|
|---|
| 43 | * forcing as to use div instead of shift. Let's be explicit.
|
|---|
| 44 | */
|
|---|
| 45 |
|
|---|
| 46 | #if defined(mips) || \
|
|---|
| 47 | defined(sparc) || defined(__sparc64__) || \
|
|---|
| 48 | defined(__alpha) || defined(__alpha__) || \
|
|---|
| 49 | defined(__i386__) || defined(__i386) || defined(__ia64__) || \
|
|---|
| 50 | defined(__s390x__) || defined(__s390__) || \
|
|---|
| 51 | defined(__amd64__) || defined(amd64) || defined(__amd64)
|
|---|
| 52 | #define GetHighWord(x) (((int) (x)) >> 16)
|
|---|
| 53 | #else
|
|---|
| 54 | #define GetHighWord(x) (((int) (x)) / 65536)
|
|---|
| 55 | #endif
|
|---|
| 56 |
|
|---|
| 57 | #if IMAGE_BYTE_ORDER == MSBFirst
|
|---|
| 58 | #define intToCoord(i,x,y) (((x) = GetHighWord(i)), ((y) = (int) ((short) (i))))
|
|---|
| 59 | #define coordToInt(x,y) (((x) << 16) | ((y) & 0xffff))
|
|---|
| 60 | #define intToX(i) (GetHighWord(i))
|
|---|
| 61 | #define intToY(i) ((int) ((short) i))
|
|---|
| 62 | #else
|
|---|
| 63 | #define intToCoord(i,x,y) (((x) = (int) ((short) (i))), ((y) = GetHighWord(i)))
|
|---|
| 64 | #define coordToInt(x,y) (((y) << 16) | ((x) & 0xffff))
|
|---|
| 65 | #define intToX(i) ((int) ((short) (i)))
|
|---|
| 66 | #define intToY(i) (GetHighWord(i))
|
|---|
| 67 | #endif
|
|---|
| 68 |
|
|---|
| 69 | #endif /* _MICOORD_H_ */
|
|---|
