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