projects / OpenSPARC-T2-DV / blame
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| 86530b38 AT |
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 |