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 "cpu.h" 22 #include "qapi/error.h" 23 #include "qemu/error-report.h" 24 #include "qemu/qemu-print.h" 25 #include "system/accel-ops.h" 26 #include "system/cpus.h" 27 #include "exec/cpu-common.h" 28 #include "exec/tswap.h" 29 #include "exec/replay-core.h" 30 #include "exec/log.h" 31 #include "accel/accel-cpu-target.h" 32 #include "trace/trace-root.h" 33 34 /* Validate correct placement of CPUArchState. */ 35 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, parent_obj) != 0); 36 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, env) != sizeof(CPUState)); 37 38 char *cpu_model_from_type(const char *typename) 39 { 40 const char *suffix = "-" CPU_RESOLVING_TYPE; 41 42 if (!object_class_by_name(typename)) { 43 return NULL; 44 } 45 46 if (g_str_has_suffix(typename, suffix)) { 47 return g_strndup(typename, strlen(typename) - strlen(suffix)); 48 } 49 50 return g_strdup(typename); 51 } 52 53 const char *parse_cpu_option(const char *cpu_option) 54 { 55 ObjectClass *oc; 56 CPUClass *cc; 57 gchar **model_pieces; 58 const char *cpu_type; 59 60 model_pieces = g_strsplit(cpu_option, ",", 2); 61 if (!model_pieces[0]) { 62 error_report("-cpu option cannot be empty"); 63 exit(1); 64 } 65 66 oc = cpu_class_by_name(CPU_RESOLVING_TYPE, model_pieces[0]); 67 if (oc == NULL) { 68 error_report("unable to find CPU model '%s'", model_pieces[0]); 69 g_strfreev(model_pieces); 70 exit(EXIT_FAILURE); 71 } 72 73 cpu_type = object_class_get_name(oc); 74 cc = CPU_CLASS(oc); 75 cc->parse_features(cpu_type, model_pieces[1], &error_fatal); 76 g_strfreev(model_pieces); 77 return cpu_type; 78 } 79 80 static void cpu_list_entry(gpointer data, gpointer user_data) 81 { 82 CPUClass *cc = CPU_CLASS(OBJECT_CLASS(data)); 83 const char *typename = object_class_get_name(OBJECT_CLASS(data)); 84 g_autofree char *model = cpu_model_from_type(typename); 85 86 if (cc->deprecation_note) { 87 qemu_printf(" %s (deprecated)\n", model); 88 } else { 89 qemu_printf(" %s\n", model); 90 } 91 } 92 93 void list_cpus(void) 94 { 95 CPUClass *cc = CPU_CLASS(object_class_by_name(CPU_RESOLVING_TYPE)); 96 97 if (cc->list_cpus) { 98 cc->list_cpus(); 99 } else { 100 GSList *list; 101 102 list = object_class_get_list_sorted(TYPE_CPU, false); 103 qemu_printf("Available CPUs:\n"); 104 g_slist_foreach(list, cpu_list_entry, NULL); 105 g_slist_free(list); 106 } 107 } 108 109 /* enable or disable single step mode. EXCP_DEBUG is returned by the 110 CPU loop after each instruction */ 111 void cpu_single_step(CPUState *cpu, int enabled) 112 { 113 if (cpu->singlestep_enabled != enabled) { 114 cpu->singlestep_enabled = enabled; 115 116 #if !defined(CONFIG_USER_ONLY) 117 const AccelOpsClass *ops = cpus_get_accel(); 118 if (ops->update_guest_debug) { 119 ops->update_guest_debug(cpu); 120 } 121 #endif 122 123 trace_breakpoint_singlestep(cpu->cpu_index, enabled); 124 } 125 } 126 127 void cpu_abort(CPUState *cpu, const char *fmt, ...) 128 { 129 va_list ap; 130 va_list ap2; 131 132 va_start(ap, fmt); 133 va_copy(ap2, ap); 134 fprintf(stderr, "qemu: fatal: "); 135 vfprintf(stderr, fmt, ap); 136 fprintf(stderr, "\n"); 137 cpu_dump_state(cpu, stderr, CPU_DUMP_FPU | CPU_DUMP_CCOP); 138 if (qemu_log_separate()) { 139 FILE *logfile = qemu_log_trylock(); 140 if (logfile) { 141 fprintf(logfile, "qemu: fatal: "); 142 vfprintf(logfile, fmt, ap2); 143 fprintf(logfile, "\n"); 144 cpu_dump_state(cpu, logfile, CPU_DUMP_FPU | CPU_DUMP_CCOP); 145 qemu_log_unlock(logfile); 146 } 147 } 148 va_end(ap2); 149 va_end(ap); 150 replay_finish(); 151 #if defined(CONFIG_USER_ONLY) 152 { 153 struct sigaction act; 154 sigfillset(&act.sa_mask); 155 act.sa_handler = SIG_DFL; 156 act.sa_flags = 0; 157 sigaction(SIGABRT, &act, NULL); 158 } 159 #endif 160 abort(); 161 } 162 163 #undef target_words_bigendian 164 bool target_words_bigendian(void) 165 { 166 return TARGET_BIG_ENDIAN; 167 } 168 169 const char *target_name(void) 170 { 171 return TARGET_NAME; 172 } 173