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 CPUState
*cpu_by_arch_id(int64_t id
)
42 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
44 if (cc
->get_arch_id(cpu
) == id
) {
51 bool cpu_exists(int64_t id
)
53 return !!cpu_by_arch_id(id
);
56 CPUState
*cpu_generic_init(const char *typename
, const char *cpu_model
)
64 model_pieces
= g_strsplit(cpu_model
, ",", 2);
66 oc
= cpu_class_by_name(typename
, model_pieces
[0]);
68 g_strfreev(model_pieces
);
73 /* TODO: all callers of cpu_generic_init() need to be converted to
74 * call parse_features() only once, before calling cpu_generic_init().
76 cc
->parse_features(object_class_get_name(oc
), model_pieces
[1], &err
);
77 g_strfreev(model_pieces
);
82 cpu
= CPU(object_new(object_class_get_name(oc
)));
83 object_property_set_bool(OBJECT(cpu
), true, "realized", &err
);
87 error_report_err(err
);
88 object_unref(OBJECT(cpu
));
95 bool cpu_paging_enabled(const CPUState
*cpu
)
97 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
99 return cc
->get_paging_enabled(cpu
);
102 static bool cpu_common_get_paging_enabled(const CPUState
*cpu
)
107 void cpu_get_memory_mapping(CPUState
*cpu
, MemoryMappingList
*list
,
110 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
112 cc
->get_memory_mapping(cpu
, list
, errp
);
115 static void cpu_common_get_memory_mapping(CPUState
*cpu
,
116 MemoryMappingList
*list
,
119 error_setg(errp
, "Obtaining memory mappings is unsupported on this CPU.");
122 /* Resetting the IRQ comes from across the code base so we take the
123 * BQL here if we need to. cpu_interrupt assumes it is held.*/
124 void cpu_reset_interrupt(CPUState
*cpu
, int mask
)
126 bool need_lock
= !qemu_mutex_iothread_locked();
129 qemu_mutex_lock_iothread();
131 cpu
->interrupt_request
&= ~mask
;
133 qemu_mutex_unlock_iothread();
137 void cpu_exit(CPUState
*cpu
)
139 atomic_set(&cpu
->exit_request
, 1);
140 /* Ensure cpu_exec will see the exit request after TCG has exited. */
142 atomic_set(&cpu
->icount_decr
.u16
.high
, -1);
145 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f
, CPUState
*cpu
,
148 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
150 return (*cc
->write_elf32_qemunote
)(f
, cpu
, opaque
);
153 static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f
,
154 CPUState
*cpu
, void *opaque
)
159 int cpu_write_elf32_note(WriteCoreDumpFunction f
, CPUState
*cpu
,
160 int cpuid
, void *opaque
)
162 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
164 return (*cc
->write_elf32_note
)(f
, cpu
, cpuid
, opaque
);
167 static int cpu_common_write_elf32_note(WriteCoreDumpFunction f
,
168 CPUState
*cpu
, int cpuid
,
174 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f
, CPUState
*cpu
,
177 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
179 return (*cc
->write_elf64_qemunote
)(f
, cpu
, opaque
);
182 static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f
,
183 CPUState
*cpu
, void *opaque
)
188 int cpu_write_elf64_note(WriteCoreDumpFunction f
, CPUState
*cpu
,
189 int cpuid
, void *opaque
)
191 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
193 return (*cc
->write_elf64_note
)(f
, cpu
, cpuid
, opaque
);
196 static int cpu_common_write_elf64_note(WriteCoreDumpFunction f
,
197 CPUState
*cpu
, int cpuid
,
204 static int cpu_common_gdb_read_register(CPUState
*cpu
, uint8_t *buf
, int reg
)
209 static int cpu_common_gdb_write_register(CPUState
*cpu
, uint8_t *buf
, int reg
)
214 static bool cpu_common_debug_check_watchpoint(CPUState
*cpu
, CPUWatchpoint
*wp
)
216 /* If no extra check is required, QEMU watchpoint match can be considered
217 * as an architectural match.
222 bool target_words_bigendian(void);
223 static bool cpu_common_virtio_is_big_endian(CPUState
*cpu
)
225 return target_words_bigendian();
228 static void cpu_common_noop(CPUState
*cpu
)
232 static bool cpu_common_exec_interrupt(CPUState
*cpu
, int int_req
)
237 GuestPanicInformation
*cpu_get_crash_info(CPUState
*cpu
)
239 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
240 GuestPanicInformation
*res
= NULL
;
242 if (cc
->get_crash_info
) {
243 res
= cc
->get_crash_info(cpu
);
248 void cpu_dump_state(CPUState
*cpu
, FILE *f
, fprintf_function cpu_fprintf
,
251 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
253 if (cc
->dump_state
) {
254 cpu_synchronize_state(cpu
);
255 cc
->dump_state(cpu
, f
, cpu_fprintf
, flags
);
259 void cpu_dump_statistics(CPUState
*cpu
, FILE *f
, fprintf_function cpu_fprintf
,
262 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
264 if (cc
->dump_statistics
) {
265 cc
->dump_statistics(cpu
, f
, cpu_fprintf
, flags
);
269 void cpu_reset(CPUState
*cpu
)
271 CPUClass
*klass
= CPU_GET_CLASS(cpu
);
273 if (klass
->reset
!= NULL
) {
274 (*klass
->reset
)(cpu
);
277 trace_guest_cpu_reset(cpu
);
280 static void cpu_common_reset(CPUState
*cpu
)
282 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
284 if (qemu_loglevel_mask(CPU_LOG_RESET
)) {
285 qemu_log("CPU Reset (CPU %d)\n", cpu
->cpu_index
);
286 log_cpu_state(cpu
, cc
->reset_dump_flags
);
289 cpu
->interrupt_request
= 0;
292 cpu
->mem_io_vaddr
= 0;
293 cpu
->icount_extra
= 0;
294 cpu
->icount_decr
.u32
= 0;
296 cpu
->exception_index
= -1;
297 cpu
->crash_occurred
= false;
300 cpu_tb_jmp_cache_clear(cpu
);
302 tcg_flush_softmmu_tlb(cpu
);
306 static bool cpu_common_has_work(CPUState
*cs
)
311 ObjectClass
*cpu_class_by_name(const char *typename
, const char *cpu_model
)
313 CPUClass
*cc
= CPU_CLASS(object_class_by_name(typename
));
315 return cc
->class_by_name(cpu_model
);
318 static ObjectClass
*cpu_common_class_by_name(const char *cpu_model
)
323 static void cpu_common_parse_features(const char *typename
, char *features
,
326 char *featurestr
; /* Single "key=value" string being parsed */
328 static bool cpu_globals_initialized
;
330 /* TODO: all callers of ->parse_features() need to be changed to
331 * call it only once, so we can remove this check (or change it
332 * to assert(!cpu_globals_initialized).
333 * Current callers of ->parse_features() are:
334 * - cpu_generic_init()
336 if (cpu_globals_initialized
) {
339 cpu_globals_initialized
= true;
341 featurestr
= features
? strtok(features
, ",") : NULL
;
344 val
= strchr(featurestr
, '=');
346 GlobalProperty
*prop
= g_new0(typeof(*prop
), 1);
349 prop
->driver
= typename
;
350 prop
->property
= g_strdup(featurestr
);
351 prop
->value
= g_strdup(val
);
352 prop
->errp
= &error_fatal
;
353 qdev_prop_register_global(prop
);
355 error_setg(errp
, "Expected key=value format, found %s.",
359 featurestr
= strtok(NULL
, ",");
363 static void cpu_common_realizefn(DeviceState
*dev
, Error
**errp
)
365 CPUState
*cpu
= CPU(dev
);
367 if (dev
->hotplugged
) {
368 cpu_synchronize_post_init(cpu
);
372 /* NOTE: latest generic point where the cpu is fully realized */
373 trace_init_vcpu(cpu
);
376 static void cpu_common_unrealizefn(DeviceState
*dev
, Error
**errp
)
378 CPUState
*cpu
= CPU(dev
);
379 /* NOTE: latest generic point before the cpu is fully unrealized */
380 trace_fini_vcpu(cpu
);
381 cpu_exec_unrealizefn(cpu
);
384 static void cpu_common_initfn(Object
*obj
)
386 CPUState
*cpu
= CPU(obj
);
387 CPUClass
*cc
= CPU_GET_CLASS(obj
);
389 cpu
->cpu_index
= UNASSIGNED_CPU_INDEX
;
390 cpu
->gdb_num_regs
= cpu
->gdb_num_g_regs
= cc
->gdb_num_core_regs
;
391 /* *-user doesn't have configurable SMP topology */
392 /* the default value is changed by qemu_init_vcpu() for softmmu */
396 qemu_mutex_init(&cpu
->work_mutex
);
397 QTAILQ_INIT(&cpu
->breakpoints
);
398 QTAILQ_INIT(&cpu
->watchpoints
);
400 cpu_exec_initfn(cpu
);
403 static void cpu_common_finalize(Object
*obj
)
407 static int64_t cpu_common_get_arch_id(CPUState
*cpu
)
409 return cpu
->cpu_index
;
412 static vaddr
cpu_adjust_watchpoint_address(CPUState
*cpu
, vaddr addr
, int len
)
417 static void generic_handle_interrupt(CPUState
*cpu
, int mask
)
419 cpu
->interrupt_request
|= mask
;
421 if (!qemu_cpu_is_self(cpu
)) {
426 CPUInterruptHandler cpu_interrupt_handler
= generic_handle_interrupt
;
428 static void cpu_class_init(ObjectClass
*klass
, void *data
)
430 DeviceClass
*dc
= DEVICE_CLASS(klass
);
431 CPUClass
*k
= CPU_CLASS(klass
);
433 k
->class_by_name
= cpu_common_class_by_name
;
434 k
->parse_features
= cpu_common_parse_features
;
435 k
->reset
= cpu_common_reset
;
436 k
->get_arch_id
= cpu_common_get_arch_id
;
437 k
->has_work
= cpu_common_has_work
;
438 k
->get_paging_enabled
= cpu_common_get_paging_enabled
;
439 k
->get_memory_mapping
= cpu_common_get_memory_mapping
;
440 k
->write_elf32_qemunote
= cpu_common_write_elf32_qemunote
;
441 k
->write_elf32_note
= cpu_common_write_elf32_note
;
442 k
->write_elf64_qemunote
= cpu_common_write_elf64_qemunote
;
443 k
->write_elf64_note
= cpu_common_write_elf64_note
;
444 k
->gdb_read_register
= cpu_common_gdb_read_register
;
445 k
->gdb_write_register
= cpu_common_gdb_write_register
;
446 k
->virtio_is_big_endian
= cpu_common_virtio_is_big_endian
;
447 k
->debug_excp_handler
= cpu_common_noop
;
448 k
->debug_check_watchpoint
= cpu_common_debug_check_watchpoint
;
449 k
->cpu_exec_enter
= cpu_common_noop
;
450 k
->cpu_exec_exit
= cpu_common_noop
;
451 k
->cpu_exec_interrupt
= cpu_common_exec_interrupt
;
452 k
->adjust_watchpoint_address
= cpu_adjust_watchpoint_address
;
453 set_bit(DEVICE_CATEGORY_CPU
, dc
->categories
);
454 dc
->realize
= cpu_common_realizefn
;
455 dc
->unrealize
= cpu_common_unrealizefn
;
456 dc
->props
= cpu_common_props
;
458 * Reason: CPUs still need special care by board code: wiring up
459 * IRQs, adding reset handlers, halting non-first CPUs, ...
461 dc
->user_creatable
= false;
464 static const TypeInfo cpu_type_info
= {
466 .parent
= TYPE_DEVICE
,
467 .instance_size
= sizeof(CPUState
),
468 .instance_init
= cpu_common_initfn
,
469 .instance_finalize
= cpu_common_finalize
,
471 .class_size
= sizeof(CPUClass
),
472 .class_init
= cpu_class_init
,
475 static void cpu_register_types(void)
477 type_register_static(&cpu_type_info
);
480 type_init(cpu_register_types
)