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1 | /* |
2 | * ========== Copyright Header Begin ========================================== | |
3 | * | |
4 | * Hypervisor Software File: hcall_cpu.s | |
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 | .ident "@(#)hcall_cpu.s 1.98 07/05/03 SMI" | |
50 | ||
51 | #include <sys/asm_linkage.h> | |
52 | #include <asi.h> | |
53 | #include <hprivregs.h> | |
54 | #include <offsets.h> | |
55 | #include <guest.h> | |
56 | #include <util.h> | |
57 | ||
58 | /* | |
59 | * Halt the current strand | |
60 | * | |
61 | * %g1 clobbered | |
62 | * %g2 - %g6 preserved | |
63 | * %g7 return address | |
64 | */ | |
65 | ENTRY_NP(plat_halt_strand) | |
66 | #ifdef NIAGARA_ERRATUM_39 | |
67 | rdhpr %hver, %g1 | |
68 | srlx %g1, VER_MASK_MAJOR_SHIFT, %g1 | |
69 | and %g1, VER_MASK_MAJOR_MASK, %g1 | |
70 | cmp %g1, 1 ! Check for Niagara 1.x | |
71 | bleu,pt %xcc, 1f | |
72 | nop | |
73 | #endif | |
74 | rd STR_STATUS_REG, %g1 | |
75 | ! xor ACTIVE to clear it on current strand | |
76 | wr %g1, STR_STATUS_STRAND_ACTIVE, STR_STATUS_REG | |
77 | ! skid | |
78 | nop | |
79 | nop | |
80 | nop | |
81 | nop | |
82 | 1: | |
83 | HVRET | |
84 | ||
85 | SET_SIZE(plat_halt_strand) |