1 /* 2 * Target-specific parts of the CPU object 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "qapi/error.h" 22 #include "qemu/error-report.h" 23 #include "qemu/qemu-print.h" 24 #include "system/accel-ops.h" 25 #include "system/cpus.h" 26 #include "exec/tswap.h" 27 #include "exec/replay-core.h" 28 #include "exec/cpu-common.h" 29 #include "exec/log.h" 30 #include "accel/accel-cpu-target.h" 31 #include "trace/trace-root.h" 32 #include "qemu/accel.h" 33 #include "hw/core/cpu.h" 34 35 bool cpu_exec_realizefn(CPUState *cpu, Error **errp) 36 { 37 if (!accel_cpu_common_realize(cpu, errp)) { 38 return false; 39 } 40 41 /* Wait until cpu initialization complete before exposing cpu. */ 42 cpu_list_add(cpu); 43 44 cpu_vmstate_register(cpu); 45 46 return true; 47 } 48 49 void cpu_exec_unrealizefn(CPUState *cpu) 50 { 51 cpu_vmstate_unregister(cpu); 52 53 cpu_list_remove(cpu); 54 /* 55 * Now that the vCPU has been removed from the RCU list, we can call 56 * accel_cpu_common_unrealize, which may free fields using call_rcu. 57 */ 58 accel_cpu_common_unrealize(cpu); 59 } 60 61 char *cpu_model_from_type(const char *typename) 62 { 63 const char *suffix = "-" CPU_RESOLVING_TYPE; 64 65 if (!object_class_by_name(typename)) { 66 return NULL; 67 } 68 69 if (g_str_has_suffix(typename, suffix)) { 70 return g_strndup(typename, strlen(typename) - strlen(suffix)); 71 } 72 73 return g_strdup(typename); 74 } 75 76 const char *parse_cpu_option(const char *cpu_option) 77 { 78 ObjectClass *oc; 79 CPUClass *cc; 80 gchar **model_pieces; 81 const char *cpu_type; 82 83 model_pieces = g_strsplit(cpu_option, ",", 2); 84 if (!model_pieces[0]) { 85 error_report("-cpu option cannot be empty"); 86 exit(1); 87 } 88 89 oc = cpu_class_by_name(CPU_RESOLVING_TYPE, model_pieces[0]); 90 if (oc == NULL) { 91 error_report("unable to find CPU model '%s'", model_pieces[0]); 92 g_strfreev(model_pieces); 93 exit(EXIT_FAILURE); 94 } 95 96 cpu_type = object_class_get_name(oc); 97 cc = CPU_CLASS(oc); 98 cc->parse_features(cpu_type, model_pieces[1], &error_fatal); 99 g_strfreev(model_pieces); 100 return cpu_type; 101 } 102 103 #ifndef cpu_list 104 static void cpu_list_entry(gpointer data, gpointer user_data) 105 { 106 CPUClass *cc = CPU_CLASS(OBJECT_CLASS(data)); 107 const char *typename = object_class_get_name(OBJECT_CLASS(data)); 108 g_autofree char *model = cpu_model_from_type(typename); 109 110 if (cc->deprecation_note) { 111 qemu_printf(" %s (deprecated)\n", model); 112 } else { 113 qemu_printf(" %s\n", model); 114 } 115 } 116 117 static void cpu_list(void) 118 { 119 GSList *list; 120 121 list = object_class_get_list_sorted(TYPE_CPU, false); 122 qemu_printf("Available CPUs:\n"); 123 g_slist_foreach(list, cpu_list_entry, NULL); 124 g_slist_free(list); 125 } 126 #endif 127 128 void list_cpus(void) 129 { 130 cpu_list(); 131 } 132 133 /* enable or disable single step mode. EXCP_DEBUG is returned by the 134 CPU loop after each instruction */ 135 void cpu_single_step(CPUState *cpu, int enabled) 136 { 137 if (cpu->singlestep_enabled != enabled) { 138 cpu->singlestep_enabled = enabled; 139 140 #if !defined(CONFIG_USER_ONLY) 141 const AccelOpsClass *ops = cpus_get_accel(); 142 if (ops->update_guest_debug) { 143 ops->update_guest_debug(cpu); 144 } 145 #endif 146 147 trace_breakpoint_singlestep(cpu->cpu_index, enabled); 148 } 149 } 150 151 void cpu_abort(CPUState *cpu, const char *fmt, ...) 152 { 153 va_list ap; 154 va_list ap2; 155 156 va_start(ap, fmt); 157 va_copy(ap2, ap); 158 fprintf(stderr, "qemu: fatal: "); 159 vfprintf(stderr, fmt, ap); 160 fprintf(stderr, "\n"); 161 cpu_dump_state(cpu, stderr, CPU_DUMP_FPU | CPU_DUMP_CCOP); 162 if (qemu_log_separate()) { 163 FILE *logfile = qemu_log_trylock(); 164 if (logfile) { 165 fprintf(logfile, "qemu: fatal: "); 166 vfprintf(logfile, fmt, ap2); 167 fprintf(logfile, "\n"); 168 cpu_dump_state(cpu, logfile, CPU_DUMP_FPU | CPU_DUMP_CCOP); 169 qemu_log_unlock(logfile); 170 } 171 } 172 va_end(ap2); 173 va_end(ap); 174 replay_finish(); 175 #if defined(CONFIG_USER_ONLY) 176 { 177 struct sigaction act; 178 sigfillset(&act.sa_mask); 179 act.sa_handler = SIG_DFL; 180 act.sa_flags = 0; 181 sigaction(SIGABRT, &act, NULL); 182 } 183 #endif 184 abort(); 185 } 186 187 bool target_words_bigendian(void) 188 { 189 return TARGET_BIG_ENDIAN; 190 } 191 192 const char *target_name(void) 193 { 194 return TARGET_NAME; 195 } 196