4 * Copyright (c) 2012 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>
24 #include "hw/qdev-core.h"
25 #include "exec/hwaddr.h"
26 #include "qemu/thread.h"
28 #include "qemu/typedefs.h"
30 typedef int (*WriteCoreDumpFunction)(void *buf, size_t size, void *opaque);
34 * Type wide enough to contain any #target_ulong virtual address.
36 typedef uint64_t vaddr;
37 #define VADDR_PRId PRId64
38 #define VADDR_PRIu PRIu64
39 #define VADDR_PRIo PRIo64
40 #define VADDR_PRIx PRIx64
41 #define VADDR_PRIX PRIX64
42 #define VADDR_MAX UINT64_MAX
46 * @section_id: QEMU-cpu
48 * @short_description: Base class for all CPUs
51 #define TYPE_CPU "cpu"
53 #define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU)
54 #define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU)
55 #define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU)
57 typedef struct CPUState CPUState;
59 typedef void (*CPUUnassignedAccess)(CPUState *cpu, hwaddr addr,
60 bool is_write, bool is_exec, int opaque,
65 * @class_by_name: Callback to map -cpu command line model name to an
66 * instantiatable CPU type.
67 * @reset: Callback to reset the #CPUState to its initial state.
68 * @reset_dump_flags: #CPUDumpFlags to use for reset logging.
69 * @do_interrupt: Callback for interrupt handling.
70 * @do_unassigned_access: Callback for unassigned access handling.
71 * @dump_state: Callback for dumping state.
72 * @dump_statistics: Callback for dumping statistics.
73 * @get_arch_id: Callback for getting architecture-dependent CPU ID.
74 * @get_paging_enabled: Callback for inquiring whether paging is enabled.
75 * @get_memory_mapping: Callback for obtaining the memory mappings.
76 * @set_pc: Callback for setting the Program Counter register.
77 * @vmsd: State description for migration.
79 * Represents a CPU family or model.
81 typedef struct CPUClass {
83 DeviceClass parent_class;
86 ObjectClass *(*class_by_name)(const char *cpu_model);
88 void (*reset)(CPUState *cpu);
90 void (*do_interrupt)(CPUState *cpu);
91 CPUUnassignedAccess do_unassigned_access;
92 void (*dump_state)(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
94 void (*dump_statistics)(CPUState *cpu, FILE *f,
95 fprintf_function cpu_fprintf, int flags);
96 int64_t (*get_arch_id)(CPUState *cpu);
97 bool (*get_paging_enabled)(const CPUState *cpu);
98 void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
100 void (*set_pc)(CPUState *cpu, vaddr value);
102 const struct VMStateDescription *vmsd;
103 int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
104 int cpuid, void *opaque);
105 int (*write_elf64_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
107 int (*write_elf32_note)(WriteCoreDumpFunction f, CPUState *cpu,
108 int cpuid, void *opaque);
109 int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
118 * @cpu_index: CPU index (informative).
119 * @nr_cores: Number of cores within this CPU package.
120 * @nr_threads: Number of threads within this CPU.
121 * @numa_node: NUMA node this CPU is belonging to.
122 * @host_tid: Host thread ID.
123 * @running: #true if CPU is currently running (usermode).
124 * @created: Indicates whether the CPU thread has been successfully created.
125 * @interrupt_request: Indicates a pending interrupt request.
126 * @halted: Nonzero if the CPU is in suspended state.
127 * @stop: Indicates a pending stop request.
128 * @stopped: Indicates the CPU has been artificially stopped.
129 * @tcg_exit_req: Set to force TCG to stop executing linked TBs for this
130 * CPU and return to its top level loop.
131 * @env_ptr: Pointer to subclass-specific CPUArchState field.
132 * @current_tb: Currently executing TB.
133 * @next_cpu: Next CPU sharing TB cache.
134 * @kvm_fd: vCPU file descriptor for KVM.
136 * State of one CPU core or thread.
140 DeviceState parent_obj;
147 struct QemuThread *thread;
154 struct QemuCond *halt_cond;
155 struct qemu_work_item *queued_work_first, *queued_work_last;
160 volatile sig_atomic_t exit_request;
161 volatile sig_atomic_t tcg_exit_req;
162 uint32_t interrupt_request;
164 void *env_ptr; /* CPUArchState */
165 struct TranslationBlock *current_tb;
170 struct KVMState *kvm_state;
171 struct kvm_run *kvm_run;
173 /* TODO Move common fields from CPUArchState here. */
174 int cpu_index; /* used by alpha TCG */
175 uint32_t halted; /* used by alpha, cris, ppc TCG */
178 extern CPUState *first_cpu;
180 DECLARE_TLS(CPUState *, current_cpu);
181 #define current_cpu tls_var(current_cpu)
184 * cpu_paging_enabled:
185 * @cpu: The CPU whose state is to be inspected.
187 * Returns: %true if paging is enabled, %false otherwise.
189 bool cpu_paging_enabled(const CPUState *cpu);
192 * cpu_get_memory_mapping:
193 * @cpu: The CPU whose memory mappings are to be obtained.
194 * @list: Where to write the memory mappings to.
195 * @errp: Pointer for reporting an #Error.
197 void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
201 * cpu_write_elf64_note:
202 * @f: pointer to a function that writes memory to a file
203 * @cpu: The CPU whose memory is to be dumped
204 * @cpuid: ID number of the CPU
205 * @opaque: pointer to the CPUState struct
207 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
208 int cpuid, void *opaque);
211 * cpu_write_elf64_qemunote:
212 * @f: pointer to a function that writes memory to a file
213 * @cpu: The CPU whose memory is to be dumped
214 * @cpuid: ID number of the CPU
215 * @opaque: pointer to the CPUState struct
217 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
221 * cpu_write_elf32_note:
222 * @f: pointer to a function that writes memory to a file
223 * @cpu: The CPU whose memory is to be dumped
224 * @cpuid: ID number of the CPU
225 * @opaque: pointer to the CPUState struct
227 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
228 int cpuid, void *opaque);
231 * cpu_write_elf32_qemunote:
232 * @f: pointer to a function that writes memory to a file
233 * @cpu: The CPU whose memory is to be dumped
234 * @cpuid: ID number of the CPU
235 * @opaque: pointer to the CPUState struct
237 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
243 * @CPU_DUMP_FPU: dump FPU register state, not just integer
244 * @CPU_DUMP_CCOP: dump info about TCG QEMU's condition code optimization state
247 CPU_DUMP_CODE = 0x00010000,
248 CPU_DUMP_FPU = 0x00020000,
249 CPU_DUMP_CCOP = 0x00040000,
254 * @cpu: The CPU whose state is to be dumped.
255 * @f: File to dump to.
256 * @cpu_fprintf: Function to dump with.
257 * @flags: Flags what to dump.
261 void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
265 * cpu_dump_statistics:
266 * @cpu: The CPU whose state is to be dumped.
267 * @f: File to dump to.
268 * @cpu_fprintf: Function to dump with.
269 * @flags: Flags what to dump.
271 * Dumps CPU statistics.
273 void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
278 * @cpu: The CPU whose state is to be reset.
280 void cpu_reset(CPUState *cpu);
284 * @typename: The CPU base type.
285 * @cpu_model: The model string without any parameters.
287 * Looks up a CPU #ObjectClass matching name @cpu_model.
289 * Returns: A #CPUClass or %NULL if not matching class is found.
291 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
294 * cpu_class_set_vmsd:
296 * @value: Value to set. Unused for %CONFIG_USER_ONLY.
298 * Sets #VMStateDescription for @cc.
300 * The @value argument is intentionally discarded for the non-softmmu targets
301 * to avoid linker errors or excessive preprocessor usage. If this behavior
302 * is undesired, you should assign #CPUClass.vmsd directly instead.
304 #ifndef CONFIG_USER_ONLY
305 static inline void cpu_class_set_vmsd(CPUClass *cc,
306 const struct VMStateDescription *value)
311 #define cpu_class_set_vmsd(cc, value) ((cc)->vmsd = NULL)
314 #ifndef CONFIG_USER_ONLY
315 static inline void cpu_class_set_do_unassigned_access(CPUClass *cc,
316 CPUUnassignedAccess value)
318 cc->do_unassigned_access = value;
321 #define cpu_class_set_do_unassigned_access(cc, value) \
322 ((cc)->do_unassigned_access = NULL)
326 * device_class_set_vmsd:
328 * @value: Value to set. Unused for %CONFIG_USER_ONLY.
330 * Sets #VMStateDescription for @dc.
332 * The @value argument is intentionally discarded for the non-softmmu targets
333 * to avoid linker errors or excessive preprocessor usage. If this behavior
334 * is undesired, you should assign #DeviceClass.vmsd directly instead.
336 #ifndef CONFIG_USER_ONLY
337 static inline void device_class_set_vmsd(DeviceClass *dc,
338 const struct VMStateDescription *value)
343 #define device_class_set_vmsd(dc, value) ((dc)->vmsd = NULL)
348 * @cpu: The vCPU to check.
350 * Checks whether the CPU has work to do.
352 * Returns: %true if the CPU has work, %false otherwise.
354 bool qemu_cpu_has_work(CPUState *cpu);
358 * @cpu: The vCPU to check against.
360 * Checks whether the caller is executing on the vCPU thread.
362 * Returns: %true if called from @cpu's thread, %false otherwise.
364 bool qemu_cpu_is_self(CPUState *cpu);
368 * @cpu: The vCPU to kick.
370 * Kicks @cpu's thread.
372 void qemu_cpu_kick(CPUState *cpu);
376 * @cpu: The CPU to check.
378 * Checks whether the CPU is stopped.
380 * Returns: %true if run state is not running or if artificially stopped;
383 bool cpu_is_stopped(CPUState *cpu);
387 * @cpu: The vCPU to run on.
388 * @func: The function to be executed.
389 * @data: Data to pass to the function.
391 * Schedules the function @func for execution on the vCPU @cpu.
393 void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data);
397 * @cpu: The vCPU to run on.
398 * @func: The function to be executed.
399 * @data: Data to pass to the function.
401 * Schedules the function @func for execution on the vCPU @cpu asynchronously.
403 void async_run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data);
407 * @func: The function to be executed.
408 * @data: Data to pass to the function.
410 * Executes @func for each CPU.
412 void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data);
416 * @index: The CPUState@cpu_index value of the CPU to obtain.
418 * Gets a CPU matching @index.
420 * Returns: The CPU or %NULL if there is no matching CPU.
422 CPUState *qemu_get_cpu(int index);
426 * @id: Guest-exposed CPU ID to lookup.
428 * Search for CPU with specified ID.
430 * Returns: %true - CPU is found, %false - CPU isn't found.
432 bool cpu_exists(int64_t id);
434 #ifndef CONFIG_USER_ONLY
436 typedef void (*CPUInterruptHandler)(CPUState *, int);
438 extern CPUInterruptHandler cpu_interrupt_handler;
442 * @cpu: The CPU to set an interrupt on.
443 * @mask: The interupts to set.
445 * Invokes the interrupt handler.
447 static inline void cpu_interrupt(CPUState *cpu, int mask)
449 cpu_interrupt_handler(cpu, mask);
452 #else /* USER_ONLY */
454 void cpu_interrupt(CPUState *cpu, int mask);
456 #endif /* USER_ONLY */
458 #ifndef CONFIG_USER_ONLY
460 static inline void cpu_unassigned_access(CPUState *cpu, hwaddr addr,
461 bool is_write, bool is_exec,
462 int opaque, unsigned size)
464 CPUClass *cc = CPU_GET_CLASS(cpu);
466 if (cc->do_unassigned_access) {
467 cc->do_unassigned_access(cpu, addr, is_write, is_exec, opaque, size);
474 * cpu_reset_interrupt:
475 * @cpu: The CPU to clear the interrupt on.
476 * @mask: The interrupt mask to clear.
478 * Resets interrupts on the vCPU @cpu.
480 void cpu_reset_interrupt(CPUState *cpu, int mask);
484 * @cpu: The CPU to exit.
486 * Requests the CPU @cpu to exit execution.
488 void cpu_exit(CPUState *cpu);
492 * @cpu: The CPU to resume.
494 * Resumes CPU, i.e. puts CPU into runnable state.
496 void cpu_resume(CPUState *cpu);
500 * @cpu: The vCPU to initialize.
502 * Initializes a vCPU.
504 void qemu_init_vcpu(CPUState *cpu);
506 #ifdef CONFIG_SOFTMMU
507 extern const struct VMStateDescription vmstate_cpu_common;
509 #define vmstate_cpu_common vmstate_dummy
512 #define VMSTATE_CPU() { \
513 .name = "parent_obj", \
514 .size = sizeof(CPUState), \
515 .vmsd = &vmstate_cpu_common, \
516 .flags = VMS_STRUCT, \