Commit | Line | Data |
---|---|---|
920dae64 AT |
1 | /* |
2 | * ========== Copyright Header Begin ========================================== | |
3 | * | |
4 | * Hypervisor Software File: util.h | |
5 | * | |
6 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
7 | * | |
8 | * - Do no alter or remove copyright notices | |
9 | * | |
10 | * - Redistribution and use of this software in source and binary forms, with | |
11 | * or without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistribution of source code must retain the above copyright notice, | |
15 | * this list of conditions and the following disclaimer. | |
16 | * | |
17 | * - Redistribution in binary form must reproduce the above copyright notice, | |
18 | * this list of conditions and the following disclaimer in the | |
19 | * documentation and/or other materials provided with the distribution. | |
20 | * | |
21 | * Neither the name of Sun Microsystems, Inc. or the names of contributors | |
22 | * may be used to endorse or promote products derived from this software | |
23 | * without specific prior written permission. | |
24 | * | |
25 | * This software is provided "AS IS," without a warranty of any kind. | |
26 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
27 | * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
28 | * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
29 | * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
30 | * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
31 | * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
32 | * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
33 | * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
34 | * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
35 | * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
36 | * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
37 | * | |
38 | * You acknowledge that this software is not designed, licensed or | |
39 | * intended for use in the design, construction, operation or maintenance of | |
40 | * any nuclear facility. | |
41 | * | |
42 | * ========== Copyright Header End ============================================ | |
43 | */ | |
44 | /* | |
45 | * Copyright 2007 Sun Microsystems, Inc. All rights reserved. | |
46 | * Use is subject to license terms. | |
47 | */ | |
48 | ||
49 | #ifndef _PLATFORM_UTIL_H | |
50 | #define _PLATFORM_UTIL_H | |
51 | ||
52 | #pragma ident "@(#)util.h 1.2 07/09/06 SMI" | |
53 | ||
54 | #ifdef __cplusplus | |
55 | extern "C" { | |
56 | #endif | |
57 | ||
58 | /* BEGIN CSTYLED */ | |
59 | ||
60 | /* | |
61 | * Cause the CPU to spin in a loop for the specified number of milliseconds | |
62 | * | |
63 | * Inputs: | |
64 | * | |
65 | * msecs - (constant) time value to spin | |
66 | * | |
67 | */ | |
68 | #define CPU_MSEC_DELAY(msecs, scr1, scr2, scr3) \ | |
69 | .pushlocals ;\ | |
70 | ROOT_STRUCT(scr1) ;\ | |
71 | ldx [scr1 + CONFIG_STICKFREQUENCY], scr1 ;\ | |
72 | brnz,pt scr1, 1f ;\ | |
73 | nop ;\ | |
74 | setx 1400000000, scr2, scr1 /* if MD hasn't been loaded */ ;\ | |
75 | /* use a default of 1.4ghz */ ;\ | |
76 | 1: ;\ | |
77 | set 1000, scr3 ;\ | |
78 | udivx scr1, scr3, scr1 /* ticks per millisecond */ ;\ | |
79 | setx msecs, scr3, scr2 /* # of milliseconds to wait */ ;\ | |
80 | mulx scr1, scr2, scr2 /* delay value in ticks */ ;\ | |
81 | rdpr %tick, scr1 ;\ | |
82 | 0: ;\ | |
83 | rdpr %tick, scr3 ;\ | |
84 | sub scr3, scr1, scr3 ;\ | |
85 | cmp scr3, scr2 ;\ | |
86 | bl %xcc, 0b ;\ | |
87 | nop ;\ | |
88 | .poplocals | |
89 | ||
90 | /* END CSTYLED */ | |
91 | ||
92 | #ifdef __cplusplus | |
93 | } | |
94 | #endif | |
95 | ||
96 | #endif /* _PLATFORM_UTIL_H */ |