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 cpu
->exit_request
= 1;
124 /* Ensure cpu_exec will see the exit request after TCG has exited. */
126 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
);
257 if (qemu_loglevel_mask(CPU_LOG_RESET
)) {
258 qemu_log("CPU Reset (CPU %d)\n", cpu
->cpu_index
);
259 log_cpu_state(cpu
, cc
->reset_dump_flags
);
262 cpu
->interrupt_request
= 0;
265 cpu
->mem_io_vaddr
= 0;
266 cpu
->icount_extra
= 0;
267 cpu
->icount_decr
.u32
= 0;
269 cpu
->exception_index
= -1;
270 cpu
->crash_occurred
= false;
271 memset(cpu
->tb_jmp_cache
, 0, TB_JMP_CACHE_SIZE
* sizeof(void *));
274 static bool cpu_common_has_work(CPUState
*cs
)
279 ObjectClass
*cpu_class_by_name(const char *typename
, const char *cpu_model
)
281 CPUClass
*cc
= CPU_CLASS(object_class_by_name(typename
));
283 return cc
->class_by_name(cpu_model
);
286 static ObjectClass
*cpu_common_class_by_name(const char *cpu_model
)
291 static void cpu_common_parse_features(const char *typename
, char *features
,
294 char *featurestr
; /* Single "key=value" string being parsed */
296 static bool cpu_globals_initialized
;
298 /* TODO: all callers of ->parse_features() need to be changed to
299 * call it only once, so we can remove this check (or change it
300 * to assert(!cpu_globals_initialized).
301 * Current callers of ->parse_features() are:
302 * - cpu_generic_init()
304 if (cpu_globals_initialized
) {
307 cpu_globals_initialized
= true;
309 featurestr
= features
? strtok(features
, ",") : NULL
;
312 val
= strchr(featurestr
, '=');
314 GlobalProperty
*prop
= g_new0(typeof(*prop
), 1);
317 prop
->driver
= typename
;
318 prop
->property
= g_strdup(featurestr
);
319 prop
->value
= g_strdup(val
);
320 prop
->errp
= &error_fatal
;
321 qdev_prop_register_global(prop
);
323 error_setg(errp
, "Expected key=value format, found %s.",
327 featurestr
= strtok(NULL
, ",");
331 static void cpu_common_realizefn(DeviceState
*dev
, Error
**errp
)
333 CPUState
*cpu
= CPU(dev
);
335 if (dev
->hotplugged
) {
336 cpu_synchronize_post_init(cpu
);
340 /* NOTE: latest generic point where the cpu is fully realized */
341 trace_init_vcpu(cpu
);
344 static void cpu_common_initfn(Object
*obj
)
346 CPUState
*cpu
= CPU(obj
);
347 CPUClass
*cc
= CPU_GET_CLASS(obj
);
349 cpu
->cpu_index
= UNASSIGNED_CPU_INDEX
;
350 cpu
->gdb_num_regs
= cpu
->gdb_num_g_regs
= cc
->gdb_num_core_regs
;
351 /* *-user doesn't have configurable SMP topology */
352 /* the default value is changed by qemu_init_vcpu() for softmmu */
356 qemu_mutex_init(&cpu
->work_mutex
);
357 QTAILQ_INIT(&cpu
->breakpoints
);
358 QTAILQ_INIT(&cpu
->watchpoints
);
359 bitmap_zero(cpu
->trace_dstate
, TRACE_VCPU_EVENT_COUNT
);
362 static void cpu_common_finalize(Object
*obj
)
364 cpu_exec_exit(CPU(obj
));
367 static int64_t cpu_common_get_arch_id(CPUState
*cpu
)
369 return cpu
->cpu_index
;
372 static void cpu_class_init(ObjectClass
*klass
, void *data
)
374 DeviceClass
*dc
= DEVICE_CLASS(klass
);
375 CPUClass
*k
= CPU_CLASS(klass
);
377 k
->class_by_name
= cpu_common_class_by_name
;
378 k
->parse_features
= cpu_common_parse_features
;
379 k
->reset
= cpu_common_reset
;
380 k
->get_arch_id
= cpu_common_get_arch_id
;
381 k
->has_work
= cpu_common_has_work
;
382 k
->get_paging_enabled
= cpu_common_get_paging_enabled
;
383 k
->get_memory_mapping
= cpu_common_get_memory_mapping
;
384 k
->write_elf32_qemunote
= cpu_common_write_elf32_qemunote
;
385 k
->write_elf32_note
= cpu_common_write_elf32_note
;
386 k
->write_elf64_qemunote
= cpu_common_write_elf64_qemunote
;
387 k
->write_elf64_note
= cpu_common_write_elf64_note
;
388 k
->gdb_read_register
= cpu_common_gdb_read_register
;
389 k
->gdb_write_register
= cpu_common_gdb_write_register
;
390 k
->virtio_is_big_endian
= cpu_common_virtio_is_big_endian
;
391 k
->debug_excp_handler
= cpu_common_noop
;
392 k
->debug_check_watchpoint
= cpu_common_debug_check_watchpoint
;
393 k
->cpu_exec_enter
= cpu_common_noop
;
394 k
->cpu_exec_exit
= cpu_common_noop
;
395 k
->cpu_exec_interrupt
= cpu_common_exec_interrupt
;
396 dc
->realize
= cpu_common_realizefn
;
398 * Reason: CPUs still need special care by board code: wiring up
399 * IRQs, adding reset handlers, halting non-first CPUs, ...
401 dc
->cannot_instantiate_with_device_add_yet
= true;
404 static const TypeInfo cpu_type_info
= {
406 .parent
= TYPE_DEVICE
,
407 .instance_size
= sizeof(CPUState
),
408 .instance_init
= cpu_common_initfn
,
409 .instance_finalize
= cpu_common_finalize
,
411 .class_size
= sizeof(CPUClass
),
412 .class_init
= cpu_class_init
,
415 static void cpu_register_types(void)
417 type_register_static(&cpu_type_info
);
420 type_init(cpu_register_types
)