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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Stubs for basic system services otherwise unavailable to the debugger. 31 */ 32 33 #include <stdlib.h> 34 #include <unistd.h> 35 #include <libproc.h> 36 #include <sys/time.h> 37 38 #include <kmdb/kmdb_dpi.h> 39 #include <kmdb/kmdb_promif.h> 40 #include <mdb/mdb_debug.h> 41 #include <mdb/mdb_signal.h> 42 #include <mdb/mdb_io_impl.h> 43 #include <mdb/mdb.h> 44 45 /*ARGSUSED*/ 46 char * 47 getenv(const char *name) 48 { 49 /* There aren't any environment variables here */ 50 return (NULL); 51 } 52 53 char * 54 strerror(int errnum) 55 { 56 static char errnostr[16]; 57 58 (void) mdb_snprintf(errnostr, sizeof (errnostr), "Error %d", errnum); 59 60 return (errnostr); 61 } 62 63 pid_t 64 getpid(void) 65 { 66 return (1); 67 } 68 69 /* 70 * We're trying to isolate ourselves from the rest of the world as much as 71 * possible, so we can't rely on the time in the kernel proper. For now, we 72 * just bump a counter whenever time is requested, thus guaranteeing that 73 * things with timestamps can be compared according to order of occurrance. 74 */ 75 hrtime_t 76 gethrtime(void) 77 { 78 static hrtime_t kmdb_timestamp; 79 80 return (++kmdb_timestamp); 81 } 82 83 /* 84 * Signal handling 85 */ 86 87 /*ARGSUSED*/ 88 int 89 sigemptyset(sigset_t *set) 90 { 91 return (0); 92 } 93 94 /*ARGSUSED*/ 95 int 96 sigaddset(sigset_t *set, int signo) 97 { 98 return (0); 99 } 100 101 /*ARGSUSED*/ 102 int 103 sigfillset(sigset_t *set) 104 { 105 return (0); 106 } 107 108 /*ARGSUSED*/ 109 int 110 sigprocmask(int how, const sigset_t *set, sigset_t *oset) 111 { 112 return (0); 113 } 114 115 /*ARGSUSED*/ 116 int 117 sigaction(int sig, const struct sigaction *act, struct sigaction *oact) 118 { 119 return (0); 120 } 121 122 /*ARGSUSED*/ 123 int 124 kill(pid_t pid, int sig) 125 { 126 if (sig == SIGABRT) { 127 mdb_printf("Debugger aborted\n"); 128 exit(1); 129 } 130 131 return (0); 132 } 133 134 /*ARGSUSED*/ 135 int 136 proc_str2flt(const char *buf, int *ptr) 137 { 138 return (-1); 139 } 140 141 /*ARGSUSED*/ 142 int 143 proc_str2sig(const char *buf, int *ptr) 144 { 145 return (-1); 146 } 147 148 /*ARGSUSED*/ 149 int 150 proc_str2sys(const char *buf, int *ptr) 151 { 152 return (-1); 153 } 154 155 /*ARGSUSED*/ 156 void 157 exit(int status) 158 { 159 #ifdef __sparc 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 char c; 167 168 recurse = 1; 169 170 mdb_iob_printf(mdb.m_out, "Press any key to reboot\n"); 171 mdb_iob_flush(mdb.m_out); 172 173 while (IOP_READ(mdb.m_term, &c, 1) != 1) 174 continue; 175 mdb_iob_printf(mdb.m_out, "%c%s", c, (c == '\n' ? "" : "\n")); 176 } 177 178 kmdb_dpi_reboot(); 179 #endif 180 } 181