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/hw_accel.h"
26 #include "qemu/notify.h"
29 #include "exec/cpu-common.h"
30 #include "qemu/error-report.h"
31 #include "sysemu/sysemu.h"
32 #include "hw/qdev-properties.h"
33 #include "trace-root.h"
35 CPUInterruptHandler cpu_interrupt_handler
;
37 bool cpu_exists(int64_t id
)
42 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
44 if (cc
->get_arch_id(cpu
) == id
) {
51 CPUState
*cpu_generic_init(const char *typename
, const char *cpu_model
)
53 char *str
, *name
, *featurestr
;
59 str
= g_strdup(cpu_model
);
60 name
= strtok(str
, ",");
62 oc
= cpu_class_by_name(typename
, name
);
69 featurestr
= strtok(NULL
, ",");
70 /* TODO: all callers of cpu_generic_init() need to be converted to
71 * call parse_features() only once, before calling cpu_generic_init().
73 cc
->parse_features(object_class_get_name(oc
), featurestr
, &err
);
79 cpu
= CPU(object_new(object_class_get_name(oc
)));
80 object_property_set_bool(OBJECT(cpu
), true, "realized", &err
);
84 error_report_err(err
);
85 object_unref(OBJECT(cpu
));
92 void *cpu_alloc_env(CPUState
*cpu
)
94 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
96 return cc
->alloc_env
? cc
->alloc_env(cpu
) : NULL
;
99 void cpu_get_env(CPUState
*cpu
, void *env
)
101 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
104 cc
->get_env(cpu
, env
);
108 void cpu_set_env(CPUState
*cpu
, void *env
)
110 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
113 cc
->set_env(cpu
, env
);
117 void cpu_free_env(CPUState
*cpu
, void *env
)
119 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
122 cc
->free_env(cpu
, env
);
126 bool cpu_paging_enabled(const CPUState
*cpu
)
128 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
130 return cc
->get_paging_enabled(cpu
);
133 static bool cpu_common_get_paging_enabled(const CPUState
*cpu
)
138 void cpu_get_memory_mapping(CPUState
*cpu
, MemoryMappingList
*list
,
141 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
143 cc
->get_memory_mapping(cpu
, list
, errp
);
146 static void cpu_common_get_memory_mapping(CPUState
*cpu
,
147 MemoryMappingList
*list
,
150 error_setg(errp
, "Obtaining memory mappings is unsupported on this CPU.");
153 /* Resetting the IRQ comes from across the code base so we take the
154 * BQL here if we need to. cpu_interrupt assumes it is held.*/
155 void cpu_reset_interrupt(CPUState
*cpu
, int mask
)
157 bool need_lock
= !qemu_mutex_iothread_locked();
160 qemu_mutex_lock_iothread();
162 cpu
->interrupt_request
&= ~mask
;
164 qemu_mutex_unlock_iothread();
168 void cpu_exit(CPUState
*cpu
)
170 atomic_set(&cpu
->exit_request
, 1);
171 /* Ensure cpu_exec will see the exit request after TCG has exited. */
173 atomic_set(&cpu
->icount_decr
.u16
.high
, -1);
176 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f
, CPUState
*cpu
,
179 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
181 return (*cc
->write_elf32_qemunote
)(f
, cpu
, opaque
);
184 static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f
,
185 CPUState
*cpu
, void *opaque
)
190 int cpu_write_elf32_note(WriteCoreDumpFunction f
, CPUState
*cpu
,
191 int cpuid
, void *opaque
)
193 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
195 return (*cc
->write_elf32_note
)(f
, cpu
, cpuid
, opaque
);
198 static int cpu_common_write_elf32_note(WriteCoreDumpFunction f
,
199 CPUState
*cpu
, int cpuid
,
205 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f
, CPUState
*cpu
,
208 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
210 return (*cc
->write_elf64_qemunote
)(f
, cpu
, opaque
);
213 static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f
,
214 CPUState
*cpu
, void *opaque
)
219 int cpu_write_elf64_note(WriteCoreDumpFunction f
, CPUState
*cpu
,
220 int cpuid
, void *opaque
)
222 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
224 return (*cc
->write_elf64_note
)(f
, cpu
, cpuid
, opaque
);
227 static int cpu_common_write_elf64_note(WriteCoreDumpFunction f
,
228 CPUState
*cpu
, int cpuid
,
235 static int cpu_common_gdb_read_register(CPUState
*cpu
, uint8_t *buf
, int reg
)
240 static int cpu_common_gdb_write_register(CPUState
*cpu
, uint8_t *buf
, int reg
)
245 static bool cpu_common_debug_check_watchpoint(CPUState
*cpu
, CPUWatchpoint
*wp
)
247 /* If no extra check is required, QEMU watchpoint match can be considered
248 * as an architectural match.
253 bool target_words_bigendian(void);
254 static bool cpu_common_virtio_is_big_endian(CPUState
*cpu
)
256 return target_words_bigendian();
259 static void cpu_common_noop(CPUState
*cpu
)
263 static bool cpu_common_exec_interrupt(CPUState
*cpu
, int int_req
)
268 GuestPanicInformation
*cpu_get_crash_info(CPUState
*cpu
)
270 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
271 GuestPanicInformation
*res
= NULL
;
273 if (cc
->get_crash_info
) {
274 res
= cc
->get_crash_info(cpu
);
279 void cpu_dump_state(CPUState
*cpu
, FILE *f
, fprintf_function cpu_fprintf
,
282 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
284 if (cc
->dump_state
) {
285 cpu_synchronize_state(cpu
);
286 cc
->dump_state(cpu
, f
, cpu_fprintf
, flags
);
290 void cpu_dump_statistics(CPUState
*cpu
, FILE *f
, fprintf_function cpu_fprintf
,
293 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
295 if (cc
->dump_statistics
) {
296 cc
->dump_statistics(cpu
, f
, cpu_fprintf
, flags
);
300 void cpu_reset(CPUState
*cpu
)
302 CPUClass
*klass
= CPU_GET_CLASS(cpu
);
304 if (klass
->reset
!= NULL
) {
305 (*klass
->reset
)(cpu
);
308 trace_guest_cpu_reset(cpu
);
311 static void cpu_common_reset(CPUState
*cpu
)
313 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
315 if (qemu_loglevel_mask(CPU_LOG_RESET
)) {
316 qemu_log("CPU Reset (CPU %d)\n", cpu
->cpu_index
);
317 log_cpu_state(cpu
, cc
->reset_dump_flags
);
320 cpu
->interrupt_request
= 0;
323 cpu
->mem_io_vaddr
= 0;
324 cpu
->icount_extra
= 0;
325 cpu
->icount_decr
.u32
= 0;
327 cpu
->exception_index
= -1;
328 cpu
->crash_occurred
= false;
331 cpu_tb_jmp_cache_clear(cpu
);
333 tcg_flush_softmmu_tlb(cpu
);
337 static bool cpu_common_has_work(CPUState
*cs
)
342 ObjectClass
*cpu_class_by_name(const char *typename
, const char *cpu_model
)
344 CPUClass
*cc
= CPU_CLASS(object_class_by_name(typename
));
346 return cc
->class_by_name(cpu_model
);
349 static ObjectClass
*cpu_common_class_by_name(const char *cpu_model
)
354 static void cpu_common_parse_features(const char *typename
, char *features
,
357 char *featurestr
; /* Single "key=value" string being parsed */
359 static bool cpu_globals_initialized
;
361 /* TODO: all callers of ->parse_features() need to be changed to
362 * call it only once, so we can remove this check (or change it
363 * to assert(!cpu_globals_initialized).
364 * Current callers of ->parse_features() are:
365 * - cpu_generic_init()
367 if (cpu_globals_initialized
) {
370 cpu_globals_initialized
= true;
372 featurestr
= features
? strtok(features
, ",") : NULL
;
375 val
= strchr(featurestr
, '=');
377 GlobalProperty
*prop
= g_new0(typeof(*prop
), 1);
380 prop
->driver
= typename
;
381 prop
->property
= g_strdup(featurestr
);
382 prop
->value
= g_strdup(val
);
383 prop
->errp
= &error_fatal
;
384 qdev_prop_register_global(prop
);
386 error_setg(errp
, "Expected key=value format, found %s.",
390 featurestr
= strtok(NULL
, ",");
394 static void cpu_common_realizefn(DeviceState
*dev
, Error
**errp
)
396 CPUState
*cpu
= CPU(dev
);
398 if (dev
->hotplugged
) {
399 cpu_synchronize_post_init(cpu
);
403 /* NOTE: latest generic point where the cpu is fully realized */
404 trace_init_vcpu(cpu
);
407 static void cpu_common_unrealizefn(DeviceState
*dev
, Error
**errp
)
409 CPUState
*cpu
= CPU(dev
);
410 /* NOTE: latest generic point before the cpu is fully unrealized */
411 trace_fini_vcpu(cpu
);
412 cpu_exec_unrealizefn(cpu
);
415 static void cpu_common_initfn(Object
*obj
)
417 CPUState
*cpu
= CPU(obj
);
418 CPUClass
*cc
= CPU_GET_CLASS(obj
);
420 cpu
->cpu_index
= UNASSIGNED_CPU_INDEX
;
421 cpu
->gdb_num_regs
= cpu
->gdb_num_g_regs
= cc
->gdb_num_core_regs
;
422 /* *-user doesn't have configurable SMP topology */
423 /* the default value is changed by qemu_init_vcpu() for softmmu */
427 qemu_mutex_init(&cpu
->work_mutex
);
428 QTAILQ_INIT(&cpu
->breakpoints
);
429 QTAILQ_INIT(&cpu
->watchpoints
);
431 cpu_exec_initfn(cpu
);
434 static void cpu_common_finalize(Object
*obj
)
438 static int64_t cpu_common_get_arch_id(CPUState
*cpu
)
440 return cpu
->cpu_index
;
443 static vaddr
cpu_adjust_watchpoint_address(CPUState
*cpu
, vaddr addr
, int len
)
448 static void generic_handle_interrupt(CPUState
*cpu
, int mask
)
450 cpu
->interrupt_request
|= mask
;
452 if (!qemu_cpu_is_self(cpu
)) {
457 CPUInterruptHandler cpu_interrupt_handler
= generic_handle_interrupt
;
459 static void cpu_class_init(ObjectClass
*klass
, void *data
)
461 DeviceClass
*dc
= DEVICE_CLASS(klass
);
462 CPUClass
*k
= CPU_CLASS(klass
);
464 k
->class_by_name
= cpu_common_class_by_name
;
465 k
->parse_features
= cpu_common_parse_features
;
466 k
->reset
= cpu_common_reset
;
467 k
->get_arch_id
= cpu_common_get_arch_id
;
468 k
->has_work
= cpu_common_has_work
;
469 k
->get_paging_enabled
= cpu_common_get_paging_enabled
;
470 k
->get_memory_mapping
= cpu_common_get_memory_mapping
;
471 k
->write_elf32_qemunote
= cpu_common_write_elf32_qemunote
;
472 k
->write_elf32_note
= cpu_common_write_elf32_note
;
473 k
->write_elf64_qemunote
= cpu_common_write_elf64_qemunote
;
474 k
->write_elf64_note
= cpu_common_write_elf64_note
;
475 k
->gdb_read_register
= cpu_common_gdb_read_register
;
476 k
->gdb_write_register
= cpu_common_gdb_write_register
;
477 k
->virtio_is_big_endian
= cpu_common_virtio_is_big_endian
;
478 k
->debug_excp_handler
= cpu_common_noop
;
479 k
->debug_check_watchpoint
= cpu_common_debug_check_watchpoint
;
480 k
->cpu_exec_enter
= cpu_common_noop
;
481 k
->cpu_exec_exit
= cpu_common_noop
;
482 k
->cpu_exec_interrupt
= cpu_common_exec_interrupt
;
483 k
->adjust_watchpoint_address
= cpu_adjust_watchpoint_address
;
484 set_bit(DEVICE_CATEGORY_CPU
, dc
->categories
);
485 dc
->realize
= cpu_common_realizefn
;
486 dc
->unrealize
= cpu_common_unrealizefn
;
487 dc
->props
= cpu_common_props
;
489 * Reason: CPUs still need special care by board code: wiring up
490 * IRQs, adding reset handlers, halting non-first CPUs, ...
492 dc
->user_creatable
= false;
495 static const TypeInfo cpu_type_info
= {
497 .parent
= TYPE_DEVICE
,
498 .instance_size
= sizeof(CPUState
),
499 .instance_init
= cpu_common_initfn
,
500 .instance_finalize
= cpu_common_finalize
,
502 .class_size
= sizeof(CPUClass
),
503 .class_init
= cpu_class_init
,
506 static void cpu_register_types(void)
508 type_register_static(&cpu_type_info
);
511 type_init(cpu_register_types
)