| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: kernel_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 | .global kernel_syscall |
| 39 | kernel_syscall: |
| 40 | ! save globals |
| 41 | stx %g1, [%g7+8] |
| 42 | stx %g2, [%g7+16] |
| 43 | stx %g3, [%g7+24] |
| 44 | stx %g4, [%g7+32] |
| 45 | stx %g5, [%g7+40] |
| 46 | stx %g6, [%g7+48] |
| 47 | |
| 48 | setx syscall_jmptab, %g1, %g2 |
| 49 | sllx %o1, 3, %g1 |
| 50 | add %g2, %g1, %g2 ! %g2 = ptr into jump table based on call # |
| 51 | ldx [%g2], %g1 |
| 52 | jmp %g1 |
| 53 | |
| 54 | kernel_sysret: |
| 55 | ! restore globals |
| 56 | ldx [%g7+8], %g1 |
| 57 | ldx [%g7+16], %g2 |
| 58 | ldx [%g7+24], %g3 |
| 59 | ldx [%g7+32], %g4 |
| 60 | ldx [%g7+40], %g5 |
| 61 | ldx [%g7+48], %g6 |
| 62 | |
| 63 | ta T_SYSRET |
| 64 | nop |
| 65 | |
| 66 | ! %o2 = size in bytes |
| 67 | ! %o3 = alignment in bytes (has to be power of 2) |
| 68 | ! %o4 = returned pointer |
| 69 | kernel_memalign: |
| 70 | setx heapptr, %g1, %g2 |
| 71 | ldx [%g2], %g1 ! %g1 = heapptr |
| 72 | mov %o3, %g3 |
| 73 | sub %g3, 1, %g3 ! alignment mask |
| 74 | and %g3, %g1, %g4 |
| 75 | brz %g4, align_done |
| 76 | not %g3 |
| 77 | and %g3, %g1, %g1 |
| 78 | add %g1, %o3, %g1 |
| 79 | align_done: |
| 80 | mov %g1, %o4 |
| 81 | add %g1, %o2, %g1 |
| 82 | ba kernel_sysret |
| 83 | stx %g1, [%g2] |
| 84 | |
| 85 | kernel_printhex: |
| 86 | ba kernel_sysret ! $ EV trig_pc_d(1,expr(@VA(.KERNEL.kernel_printhex), 16, 16)) -> printhex("diagprinthex", %o2) |
| 87 | nop |
| 88 | |
| 89 | kernel_printdec: |
| 90 | ba kernel_sysret ! $ EV trig_pc_d(1,expr(@VA(.KERNEL.kernel_printdec), 16, 16)) -> printdec("diagprintdec", %o2) |
| 91 | nop |
| 92 | |
| 93 | .data |
| 94 | syscall_jmptab: |
| 95 | .xword 0x0000000000000000 |
| 96 | .xword kernel_memalign |
| 97 | .xword kernel_printhex |
| 98 | .xword kernel_printdec |
| 99 | |
| 100 | heapptr: |
| 101 | .xword 0x0000000000000000 |
| 102 | |
| 103 | .global start_label_list |
| 104 | start_label_list: |
| 105 | #if defined(USER_PAGE_CUSTOM_MAP) || !defined(USER_TEXT_MT_MAP) |
| 106 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 107 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 108 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 109 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 110 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 111 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 112 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 113 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 114 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 115 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 116 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 117 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 118 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 119 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 120 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 121 | .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL |
| 122 | #else |
| 123 | changequote([, ])dnl |
| 124 | foreachbit([i], 64, M4_user_data_mask, [ |
| 125 | .xword [main]i |
| 126 | ])dnl |
| 127 | changequote(`,')dnl' |
| 128 | #endif |
| 129 | |
| 130 | .align 512 |
| 131 | user_globals: |
| 132 | |
| 133 | #ifndef USER_HEAP_SIZE |
| 134 | #define USER_HEAP_SIZE 0x2000 |
| 135 | #endif |
| 136 | |
| 137 | #ifndef USER_PAGE_CUSTOM_MAP |
| 138 | SECTION .USER_HEAP DATA_VA=USER_HEAP_DATA_VA |
| 139 | changequote([, ])dnl |
| 140 | forloop([i], 0, 7, [ |
| 141 | ifdef([part_]i[_used],[ |
| 142 | attr_data { |
| 143 | Name = .USER_HEAP, |
| 144 | RA = USER_HEAP_DATA_RA, |
| 145 | PA = ra2pa2(USER_HEAP_DATA_RA,i), |
| 146 | #ifndef USE_N1_TSB_NAMES |
| 147 | [part_]i[_ctx_nonzero_tsb_config_0], |
| 148 | #else |
| 149 | [part_]i[_d_ctx_nonzero_ps0_tsb], |
| 150 | #endif |
| 151 | TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0, TTE_IE=0, |
| 152 | TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0, TTE_L=0, TTE_CP=1, TTE_CV=0, |
| 153 | TTE_E=0, TTE_P=0, TTE_W=1 |
| 154 | } |
| 155 | |
| 156 | .data |
| 157 | .global user_heap_start |
| 158 | user_heap_start: |
| 159 | .skip (USER_HEAP_SIZE-0x4) |
| 160 | .word 0x0 |
| 161 | .end |
| 162 | ])dnl |
| 163 | ])dnl |
| 164 | changequote(`,')dnl' |
| 165 | #endif |