4 * Copyright (c) 2012-2014 SUSE LINUX Products GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see
18 * <http://www.gnu.org/licenses/gpl-2.0.html>
21 #include "qemu/osdep.h"
22 #include "qapi/error.h"
23 #include "qemu-common.h"
25 #include "sysemu/kvm.h"
26 #include "qemu/notify.h"
29 #include "qemu/error-report.h"
30 #include "sysemu/sysemu.h"
31 #include "hw/qdev-properties.h"
34 bool cpu_exists(int64_t id)
39 CPUClass *cc = CPU_GET_CLASS(cpu);
41 if (cc->get_arch_id(cpu) == id) {
48 CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
50 char *str, *name, *featurestr;
56 str = g_strdup(cpu_model);
57 name = strtok(str, ",");
59 oc = cpu_class_by_name(typename, name);
66 featurestr = strtok(NULL, ",");
67 /* TODO: all callers of cpu_generic_init() need to be converted to
68 * call parse_features() only once, before calling cpu_generic_init().
70 cc->parse_features(object_class_get_name(oc), featurestr, &err);
76 cpu = CPU(object_new(object_class_get_name(oc)));
77 object_property_set_bool(OBJECT(cpu), true, "realized", &err);
81 error_report_err(err);
82 object_unref(OBJECT(cpu));
89 bool cpu_paging_enabled(const CPUState *cpu)
91 CPUClass *cc = CPU_GET_CLASS(cpu);
93 return cc->get_paging_enabled(cpu);
96 static bool cpu_common_get_paging_enabled(const CPUState *cpu)
101 void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
104 CPUClass *cc = CPU_GET_CLASS(cpu);
106 cc->get_memory_mapping(cpu, list, errp);
109 static void cpu_common_get_memory_mapping(CPUState *cpu,
110 MemoryMappingList *list,
113 error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");
116 void cpu_reset_interrupt(CPUState *cpu, int mask)
118 cpu->interrupt_request &= ~mask;
121 void cpu_exit(CPUState *cpu)
123 atomic_set(&cpu->exit_request, 1);
124 /* Ensure cpu_exec will see the exit request after TCG has exited. */
126 atomic_set(&cpu->tcg_exit_req, 1);
129 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
132 CPUClass *cc = CPU_GET_CLASS(cpu);
134 return (*cc->write_elf32_qemunote)(f, cpu, opaque);
137 static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f,
138 CPUState *cpu, void *opaque)
143 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
144 int cpuid, void *opaque)
146 CPUClass *cc = CPU_GET_CLASS(cpu);
148 return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);
151 static int cpu_common_write_elf32_note(WriteCoreDumpFunction f,
152 CPUState *cpu, int cpuid,
158 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
161 CPUClass *cc = CPU_GET_CLASS(cpu);
163 return (*cc->write_elf64_qemunote)(f, cpu, opaque);
166 static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f,
167 CPUState *cpu, void *opaque)
172 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
173 int cpuid, void *opaque)
175 CPUClass *cc = CPU_GET_CLASS(cpu);
177 return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);
180 static int cpu_common_write_elf64_note(WriteCoreDumpFunction f,
181 CPUState *cpu, int cpuid,
188 static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg)
193 static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)
198 static bool cpu_common_debug_check_watchpoint(CPUState *cpu, CPUWatchpoint *wp)
200 /* If no extra check is required, QEMU watchpoint match can be considered
201 * as an architectural match.
206 bool target_words_bigendian(void);
207 static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
209 return target_words_bigendian();
212 static void cpu_common_noop(CPUState *cpu)
216 static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req)
221 void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
224 CPUClass *cc = CPU_GET_CLASS(cpu);
226 if (cc->dump_state) {
227 cpu_synchronize_state(cpu);
228 cc->dump_state(cpu, f, cpu_fprintf, flags);
232 void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
235 CPUClass *cc = CPU_GET_CLASS(cpu);
237 if (cc->dump_statistics) {
238 cc->dump_statistics(cpu, f, cpu_fprintf, flags);
242 void cpu_reset(CPUState *cpu)
244 CPUClass *klass = CPU_GET_CLASS(cpu);
246 if (klass->reset != NULL) {
247 (*klass->reset)(cpu);
250 trace_guest_cpu_reset(cpu);
253 static void cpu_common_reset(CPUState *cpu)
255 CPUClass *cc = CPU_GET_CLASS(cpu);
258 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
259 qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index);
260 log_cpu_state(cpu, cc->reset_dump_flags);
263 cpu->interrupt_request = 0;
266 cpu->mem_io_vaddr = 0;
267 cpu->icount_extra = 0;
268 cpu->icount_decr.u32 = 0;
270 cpu->exception_index = -1;
271 cpu->crash_occurred = false;
273 for (i = 0; i < TB_JMP_CACHE_SIZE; ++i) {
274 atomic_set(&cpu->tb_jmp_cache[i], NULL);
277 #ifdef CONFIG_SOFTMMU
282 static bool cpu_common_has_work(CPUState *cs)
287 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
289 CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
291 return cc->class_by_name(cpu_model);
294 static ObjectClass *cpu_common_class_by_name(const char *cpu_model)
299 static void cpu_common_parse_features(const char *typename, char *features,
302 char *featurestr; /* Single "key=value" string being parsed */
304 static bool cpu_globals_initialized;
306 /* TODO: all callers of ->parse_features() need to be changed to
307 * call it only once, so we can remove this check (or change it
308 * to assert(!cpu_globals_initialized).
309 * Current callers of ->parse_features() are:
310 * - cpu_generic_init()
312 if (cpu_globals_initialized) {
315 cpu_globals_initialized = true;
317 featurestr = features ? strtok(features, ",") : NULL;
320 val = strchr(featurestr, '=');
322 GlobalProperty *prop = g_new0(typeof(*prop), 1);
325 prop->driver = typename;
326 prop->property = g_strdup(featurestr);
327 prop->value = g_strdup(val);
328 prop->errp = &error_fatal;
329 qdev_prop_register_global(prop);
331 error_setg(errp, "Expected key=value format, found %s.",
335 featurestr = strtok(NULL, ",");
339 static void cpu_common_realizefn(DeviceState *dev, Error **errp)
341 CPUState *cpu = CPU(dev);
343 if (dev->hotplugged) {
344 cpu_synchronize_post_init(cpu);
348 /* NOTE: latest generic point where the cpu is fully realized */
349 trace_init_vcpu(cpu);
352 static void cpu_common_unrealizefn(DeviceState *dev, Error **errp)
354 CPUState *cpu = CPU(dev);
355 cpu_exec_unrealizefn(cpu);
358 static void cpu_common_initfn(Object *obj)
360 CPUState *cpu = CPU(obj);
361 CPUClass *cc = CPU_GET_CLASS(obj);
363 cpu->cpu_index = UNASSIGNED_CPU_INDEX;
364 cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs;
365 /* *-user doesn't have configurable SMP topology */
366 /* the default value is changed by qemu_init_vcpu() for softmmu */
370 qemu_mutex_init(&cpu->work_mutex);
371 QTAILQ_INIT(&cpu->breakpoints);
372 QTAILQ_INIT(&cpu->watchpoints);
374 cpu->trace_dstate = bitmap_new(trace_get_vcpu_event_count());
376 cpu_exec_initfn(cpu);
379 static void cpu_common_finalize(Object *obj)
381 CPUState *cpu = CPU(obj);
382 g_free(cpu->trace_dstate);
385 static int64_t cpu_common_get_arch_id(CPUState *cpu)
387 return cpu->cpu_index;
390 static void cpu_class_init(ObjectClass *klass, void *data)
392 DeviceClass *dc = DEVICE_CLASS(klass);
393 CPUClass *k = CPU_CLASS(klass);
395 k->class_by_name = cpu_common_class_by_name;
396 k->parse_features = cpu_common_parse_features;
397 k->reset = cpu_common_reset;
398 k->get_arch_id = cpu_common_get_arch_id;
399 k->has_work = cpu_common_has_work;
400 k->get_paging_enabled = cpu_common_get_paging_enabled;
401 k->get_memory_mapping = cpu_common_get_memory_mapping;
402 k->write_elf32_qemunote = cpu_common_write_elf32_qemunote;
403 k->write_elf32_note = cpu_common_write_elf32_note;
404 k->write_elf64_qemunote = cpu_common_write_elf64_qemunote;
405 k->write_elf64_note = cpu_common_write_elf64_note;
406 k->gdb_read_register = cpu_common_gdb_read_register;
407 k->gdb_write_register = cpu_common_gdb_write_register;
408 k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
409 k->debug_excp_handler = cpu_common_noop;
410 k->debug_check_watchpoint = cpu_common_debug_check_watchpoint;
411 k->cpu_exec_enter = cpu_common_noop;
412 k->cpu_exec_exit = cpu_common_noop;
413 k->cpu_exec_interrupt = cpu_common_exec_interrupt;
414 dc->realize = cpu_common_realizefn;
415 dc->unrealize = cpu_common_unrealizefn;
417 * Reason: CPUs still need special care by board code: wiring up
418 * IRQs, adding reset handlers, halting non-first CPUs, ...
420 dc->cannot_instantiate_with_device_add_yet = true;
423 static const TypeInfo cpu_type_info = {
425 .parent = TYPE_DEVICE,
426 .instance_size = sizeof(CPUState),
427 .instance_init = cpu_common_initfn,
428 .instance_finalize = cpu_common_finalize,
430 .class_size = sizeof(CPUClass),
431 .class_init = cpu_class_init,
434 static void cpu_register_types(void)
436 type_register_static(&cpu_type_info);
439 type_init(cpu_register_types)