1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Stubs for basic system services otherwise unavailable to the debugger. 28 */ 29 30 #include <stdlib.h> 31 #include <unistd.h> 32 #include <libproc.h> 33 #include <sys/time.h> 34 35 #include <kmdb/kmdb_dpi.h> 36 #include <kmdb/kmdb_promif.h> 37 #include <kmdb/kmdb_io.h> 38 #include <mdb/mdb_debug.h> 39 #include <mdb/mdb_signal.h> 40 #include <mdb/mdb_io_impl.h> 41 #include <mdb/mdb.h> 42 43 /*ARGSUSED*/ 44 char * 45 getenv(const char *name) 46 { 47 /* There aren't any environment variables here */ 48 return (NULL); 49 } 50 51 char * 52 strerror(int errnum) 53 { 54 static char errnostr[16]; 55 56 (void) mdb_snprintf(errnostr, sizeof (errnostr), "Error %d", errnum); 57 58 return (errnostr); 59 } 60 61 pid_t 62 getpid(void) 63 { 64 return (1); 65 } 66 67 /* 68 * We're trying to isolate ourselves from the rest of the world as much as 69 * possible, so we can't rely on the time in the kernel proper. For now, we 70 * just bump a counter whenever time is requested, thus guaranteeing that 71 * things with timestamps can be compared according to order of occurrance. 72 */ 73 hrtime_t 74 gethrtime(void) 75 { 76 static hrtime_t kmdb_timestamp; 77 78 return (++kmdb_timestamp); 79 } 80 81 /* 82 * Signal handling 83 */ 84 85 /*ARGSUSED*/ 86 int 87 sigemptyset(sigset_t *set) 88 { 89 return (0); 90 } 91 92 /*ARGSUSED*/ 93 int 94 sigaddset(sigset_t *set, int signo) 95 { 96 return (0); 97 } 98 99 /*ARGSUSED*/ 100 int 101 sigfillset(sigset_t *set) 102 { 103 return (0); 104 } 105 106 /*ARGSUSED*/ 107 int 108 sigprocmask(int how, const sigset_t *set, sigset_t *oset) 109 { 110 return (0); 111 } 112 113 /*ARGSUSED*/ 114 int 115 sigaction(int sig, const struct sigaction *act, struct sigaction *oact) 116 { 117 return (0); 118 } 119 120 /*ARGSUSED*/ 121 int 122 kill(pid_t pid, int sig) 123 { 124 if (sig == SIGABRT) { 125 mdb_printf("Debugger aborted\n"); 126 exit(1); 127 } 128 129 return (0); 130 } 131 132 /*ARGSUSED*/ 133 int 134 proc_str2flt(const char *buf, int *ptr) 135 { 136 return (-1); 137 } 138 139 /*ARGSUSED*/ 140 int 141 proc_str2sig(const char *buf, int *ptr) 142 { 143 return (-1); 144 } 145 146 /*ARGSUSED*/ 147 int 148 proc_str2sys(const char *buf, int *ptr) 149 { 150 return (-1); 151 } 152 153 /*ARGSUSED*/ 154 void 155 exit(int status) 156 { 157 #ifdef __sparc 158 extern void kmdb_prom_exit_to_mon(void) __NORETURN; 159 160 kmdb_prom_exit_to_mon(); 161 #else 162 extern void kmdb_dpi_reboot(void) __NORETURN; 163 static int recurse = 0; 164 165 if (!recurse) { 166 167 recurse = 1; 168 169 mdb_iob_printf(mdb.m_out, "Press any key to reboot\n"); 170 mdb_iob_flush(mdb.m_out); 171 mdb_iob_clearlines(mdb.m_out); 172 173 (void) kmdb_getchar(); 174 } 175 176 kmdb_dpi_reboot(); 177 #endif 178 } 179