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1 | /* |
2 | * ========== Copyright Header Begin ========================================== | |
3 | * | |
4 | * OpenSPARC T2 Processor File: dmmu_miss_handler.s | |
5 | * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
6 | * 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
7 | * | |
8 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; version 2 of the License. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | * For the avoidance of doubt, and except that if any non-GPL license | |
24 | * choice is available it will apply instead, Sun elects to use only | |
25 | * the General Public License version 2 (GPLv2) at this time for any | |
26 | * software where a choice of GPL license versions is made | |
27 | * available with the language indicating that GPLv2 or any later version | |
28 | * may be used, or where a choice of which version of the GPL is applied is | |
29 | * otherwise unspecified. | |
30 | * | |
31 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
32 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
33 | * have any questions. | |
34 | * | |
35 | * | |
36 | * ========== Copyright Header End ============================================ | |
37 | */ | |
38 | #ifdef EX_TRAPCHECK | |
39 | ! extended trapcheck returns traptype | |
40 | mov 0x68, %o0 | |
41 | #endif | |
42 | mov ASI_DMMU_TAG_ACCESS_VAL, %g7 | |
43 | ldxa [%g7] ASI_DMMU_TAG_REG, %g6 ! get va/context from tag-access | |
44 | ||
45 | ! N2 N2 N2 N2 ptr register not implemented. | |
46 | !ldxa [%g0] 0x59, %g1 ! dmmu ps0 ptr | |
47 | ||
48 | ! N2 N2 N2 N2 ptr register not implemented. | |
49 | ! SW Implementation of PTR register calQlations | |
50 | ||
51 | dconfig_0: | |
52 | ! Load TSB_CONFIG address in %g7 | |
53 | mov ASI_MMU_ZERO_CONTEXT_TSB_CONFIG_0, %g7 | |
54 | ||
55 | dmmu_tsbptr_calc: | |
56 | #include <mmu_ptr_calc.s> | |
57 | ||
58 | #ifdef MIMIC_SOLARIS | |
59 | srlx %g0, %g0, %g0 | |
60 | brnz %g0, HT0_Fast_Data_Access_MMU_Miss_0x68 | |
61 | sll %g0, %g0, %g0 | |
62 | xor %g0, %g0, %g0 | |
63 | #endif | |
64 | ||
65 | ba dload_entry | |
66 | nop | |
67 | nop | |
68 | nop | |
69 | nop |