1 /* $NetBSD: db_machdep.c,v 1.30 2026/07/19 01:03:00 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Machine-dependent functions used by ddb 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: db_machdep.c,v 1.30 2026/07/19 01:03:00 thorpej Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/proc.h> 41 42 #include <machine/db_machdep.h> 43 #include <machine/pte.h> 44 #include <machine/mon.h> 45 46 #ifdef _SUN3_ 47 #include <sun3/sun3/control.h> 48 #endif /* SUN3 */ 49 50 #include <ddb/db_command.h> 51 #include <ddb/db_output.h> 52 #include <ddb/db_interface.h> 53 54 static void db_mach_abort (db_expr_t, bool, db_expr_t, const char *); 55 static void db_mach_halt (db_expr_t, bool, db_expr_t, const char *); 56 static void db_mach_reboot (db_expr_t, bool, db_expr_t, const char *); 57 static void db_mach_pagemap(db_expr_t, bool, db_expr_t, const char *); 58 59 const struct db_command db_machine_command_table[] = { 60 { DDB_ADD_CMD("abort", db_mach_abort, 0, 61 "Calls prom_abort()", NULL, NULL) }, 62 { DDB_ADD_CMD("halt", db_mach_halt, 0, 63 "Calls prom_halt()", NULL, NULL) }, 64 { DDB_ADD_CMD("pgmap", db_mach_pagemap, CS_SET_DOT, 65 "Prints the PTE and segmap values", "virtual-address", NULL) }, 66 { DDB_ADD_CMD("reboot", db_mach_reboot, 0, 67 "Calls prom_boot()", NULL, NULL) }, 68 { DDB_END_CMD }, 69 }; 70 71 /* 72 * Machine-specific ddb commands for the sun3: 73 * abort: Drop into monitor via abort (allows continue) 74 * halt: Exit to monitor as in halt(8) 75 * reboot: Reboot the machine as in reboot(8) 76 * pgmap: Given addr, Print addr, segmap, pagemap, pte 77 */ 78 79 static void 80 db_mach_abort(db_expr_t addr, bool have_addr, db_expr_t count, 81 const char *modif) 82 { 83 84 sunmon_abort(); 85 } 86 87 static void 88 db_mach_halt(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif) 89 { 90 91 sunmon_halt(); 92 } 93 94 static void 95 db_mach_reboot(db_expr_t addr, bool have_addr, db_expr_t count, 96 const char *modif) 97 { 98 99 sunmon_reboot(""); 100 } 101 102 103 static void pte_print(int); 104 105 static void 106 db_mach_pagemap(db_expr_t addr, bool have_addr, db_expr_t count, 107 const char *modif) 108 { 109 u_long va = m68k_trunc_page((u_long)addr); 110 int pte; 111 #ifdef _SUN3_ 112 int sme; 113 114 sme = get_segmap(va); 115 if (sme == 0xFF) { 116 pte = 0; 117 } else { 118 pte = get_pte(va); 119 } 120 db_printf("0x%08lx [%02x] 0x%08x", va, sme, pte); 121 #endif /* SUN3 */ 122 #ifdef _SUN3X_ 123 pte = get_pte(va); 124 db_printf("0x%08lx 0x%08x", va, pte); 125 #endif /* SUN3X */ 126 127 pte_print(pte); 128 db_next = va + PAGE_SIZE; 129 } 130 131 #ifdef _SUN3_ 132 static void 133 pte_print(int pte) 134 { 135 int t; 136 static const char *pgt_names[] = { 137 "MEM", "OBIO", "VMES", "VMEL", 138 }; 139 140 if (pte & PG_VALID) { 141 db_printf(" V"); 142 if (pte & PG_WRITE) 143 db_printf(" W"); 144 if (pte & PG_SYSTEM) 145 db_printf(" S"); 146 if (pte & PG_NC) 147 db_printf(" NC"); 148 if (pte & PG_REF) 149 db_printf(" Ref"); 150 if (pte & PG_MOD) 151 db_printf(" Mod"); 152 153 t = (pte >> PG_TYPE_SHIFT) & 3; 154 db_printf(" %s", pgt_names[t]); 155 db_printf(" PA=0x%x\n", PG_PA(pte)); 156 } else 157 db_printf(" INVALID\n"); 158 } 159 #endif /* SUN3 */ 160 161 #ifdef _SUN3X_ 162 static void 163 pte_print(int pte) 164 { 165 166 if (pte & MMU_SHORT_PTE_DT) { 167 if (pte & MMU_SHORT_PTE_CI) 168 db_printf(" CI"); 169 if (pte & MMU_SHORT_PTE_M) 170 db_printf(" Mod"); 171 if (pte & MMU_SHORT_PTE_USED) 172 db_printf(" Ref"); 173 if (pte & MMU_SHORT_PTE_WP) 174 db_printf(" WP"); 175 db_printf(" DT%d\n", pte & MMU_SHORT_PTE_DT); 176 } else 177 db_printf(" INVALID\n"); 178 } 179 #endif /* SUN3X */ 180
Indexes created Sun Oct 25 00:26:45 UTC 2026