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,
63 struct TranslationBlock;
67 * @class_by_name: Callback to map -cpu command line model name to an
68 * instantiatable CPU type.
69 * @reset: Callback to reset the #CPUState to its initial state.
70 * @reset_dump_flags: #CPUDumpFlags to use for reset logging.
71 * @do_interrupt: Callback for interrupt handling.
72 * @do_unassigned_access: Callback for unassigned access handling.
73 * @dump_state: Callback for dumping state.
74 * @dump_statistics: Callback for dumping statistics.
75 * @get_arch_id: Callback for getting architecture-dependent CPU ID.
76 * @get_paging_enabled: Callback for inquiring whether paging is enabled.
77 * @get_memory_mapping: Callback for obtaining the memory mappings.
78 * @set_pc: Callback for setting the Program Counter register.
79 * @synchronize_from_tb: Callback for synchronizing state from a TCG
81 * @vmsd: State description for migration.
83 * Represents a CPU family or model.
85 typedef struct CPUClass {
87 DeviceClass parent_class;
90 ObjectClass *(*class_by_name)(const char *cpu_model);
92 void (*reset)(CPUState *cpu);
94 void (*do_interrupt)(CPUState *cpu);
95 CPUUnassignedAccess do_unassigned_access;
96 void (*dump_state)(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
98 void (*dump_statistics)(CPUState *cpu, FILE *f,
99 fprintf_function cpu_fprintf, int flags);
100 int64_t (*get_arch_id)(CPUState *cpu);
101 bool (*get_paging_enabled)(const CPUState *cpu);
102 void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
104 void (*set_pc)(CPUState *cpu, vaddr value);
105 void (*synchronize_from_tb)(CPUState *cpu, struct TranslationBlock *tb);
107 const struct VMStateDescription *vmsd;
108 int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
109 int cpuid, void *opaque);
110 int (*write_elf64_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
112 int (*write_elf32_note)(WriteCoreDumpFunction f, CPUState *cpu,
113 int cpuid, void *opaque);
114 int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
123 * @cpu_index: CPU index (informative).
124 * @nr_cores: Number of cores within this CPU package.
125 * @nr_threads: Number of threads within this CPU.
126 * @numa_node: NUMA node this CPU is belonging to.
127 * @host_tid: Host thread ID.
128 * @running: #true if CPU is currently running (usermode).
129 * @created: Indicates whether the CPU thread has been successfully created.
130 * @interrupt_request: Indicates a pending interrupt request.
131 * @halted: Nonzero if the CPU is in suspended state.
132 * @stop: Indicates a pending stop request.
133 * @stopped: Indicates the CPU has been artificially stopped.
134 * @tcg_exit_req: Set to force TCG to stop executing linked TBs for this
135 * CPU and return to its top level loop.
136 * @singlestep_enabled: Flags for single-stepping.
137 * @env_ptr: Pointer to subclass-specific CPUArchState field.
138 * @current_tb: Currently executing TB.
139 * @next_cpu: Next CPU sharing TB cache.
140 * @kvm_fd: vCPU file descriptor for KVM.
142 * State of one CPU core or thread.
146 DeviceState parent_obj;
153 struct QemuThread *thread;
160 struct QemuCond *halt_cond;
161 struct qemu_work_item *queued_work_first, *queued_work_last;
166 volatile sig_atomic_t exit_request;
167 volatile sig_atomic_t tcg_exit_req;
168 uint32_t interrupt_request;
169 int singlestep_enabled;
171 void *env_ptr; /* CPUArchState */
172 struct TranslationBlock *current_tb;
177 struct KVMState *kvm_state;
178 struct kvm_run *kvm_run;
180 /* TODO Move common fields from CPUArchState here. */
181 int cpu_index; /* used by alpha TCG */
182 uint32_t halted; /* used by alpha, cris, ppc TCG */
185 extern CPUState *first_cpu;
187 DECLARE_TLS(CPUState *, current_cpu);
188 #define current_cpu tls_var(current_cpu)
191 * cpu_paging_enabled:
192 * @cpu: The CPU whose state is to be inspected.
194 * Returns: %true if paging is enabled, %false otherwise.
196 bool cpu_paging_enabled(const CPUState *cpu);
199 * cpu_get_memory_mapping:
200 * @cpu: The CPU whose memory mappings are to be obtained.
201 * @list: Where to write the memory mappings to.
202 * @errp: Pointer for reporting an #Error.
204 void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
208 * cpu_write_elf64_note:
209 * @f: pointer to a function that writes memory to a file
210 * @cpu: The CPU whose memory is to be dumped
211 * @cpuid: ID number of the CPU
212 * @opaque: pointer to the CPUState struct
214 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
215 int cpuid, void *opaque);
218 * cpu_write_elf64_qemunote:
219 * @f: pointer to a function that writes memory to a file
220 * @cpu: The CPU whose memory is to be dumped
221 * @cpuid: ID number of the CPU
222 * @opaque: pointer to the CPUState struct
224 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
228 * cpu_write_elf32_note:
229 * @f: pointer to a function that writes memory to a file
230 * @cpu: The CPU whose memory is to be dumped
231 * @cpuid: ID number of the CPU
232 * @opaque: pointer to the CPUState struct
234 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
235 int cpuid, void *opaque);
238 * cpu_write_elf32_qemunote:
239 * @f: pointer to a function that writes memory to a file
240 * @cpu: The CPU whose memory is to be dumped
241 * @cpuid: ID number of the CPU
242 * @opaque: pointer to the CPUState struct
244 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
250 * @CPU_DUMP_FPU: dump FPU register state, not just integer
251 * @CPU_DUMP_CCOP: dump info about TCG QEMU's condition code optimization state
254 CPU_DUMP_CODE = 0x00010000,
255 CPU_DUMP_FPU = 0x00020000,
256 CPU_DUMP_CCOP = 0x00040000,
261 * @cpu: The CPU whose state is to be dumped.
262 * @f: File to dump to.
263 * @cpu_fprintf: Function to dump with.
264 * @flags: Flags what to dump.
268 void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
272 * cpu_dump_statistics:
273 * @cpu: The CPU whose state is to be dumped.
274 * @f: File to dump to.
275 * @cpu_fprintf: Function to dump with.
276 * @flags: Flags what to dump.
278 * Dumps CPU statistics.
280 void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
285 * @cpu: The CPU whose state is to be reset.
287 void cpu_reset(CPUState *cpu);
291 * @typename: The CPU base type.
292 * @cpu_model: The model string without any parameters.
294 * Looks up a CPU #ObjectClass matching name @cpu_model.
296 * Returns: A #CPUClass or %NULL if not matching class is found.
298 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
301 * cpu_class_set_vmsd:
303 * @value: Value to set. Unused for %CONFIG_USER_ONLY.
305 * Sets #VMStateDescription for @cc.
307 * The @value argument is intentionally discarded for the non-softmmu targets
308 * to avoid linker errors or excessive preprocessor usage. If this behavior
309 * is undesired, you should assign #CPUClass.vmsd directly instead.
311 #ifndef CONFIG_USER_ONLY
312 static inline void cpu_class_set_vmsd(CPUClass *cc,
313 const struct VMStateDescription *value)
318 #define cpu_class_set_vmsd(cc, value) ((cc)->vmsd = NULL)
321 #ifndef CONFIG_USER_ONLY
322 static inline void cpu_class_set_do_unassigned_access(CPUClass *cc,
323 CPUUnassignedAccess value)
325 cc->do_unassigned_access = value;
328 #define cpu_class_set_do_unassigned_access(cc, value) \
329 ((cc)->do_unassigned_access = NULL)
333 * device_class_set_vmsd:
335 * @value: Value to set. Unused for %CONFIG_USER_ONLY.
337 * Sets #VMStateDescription for @dc.
339 * The @value argument is intentionally discarded for the non-softmmu targets
340 * to avoid linker errors or excessive preprocessor usage. If this behavior
341 * is undesired, you should assign #DeviceClass.vmsd directly instead.
343 #ifndef CONFIG_USER_ONLY
344 static inline void device_class_set_vmsd(DeviceClass *dc,
345 const struct VMStateDescription *value)
350 #define device_class_set_vmsd(dc, value) ((dc)->vmsd = NULL)
355 * @cpu: The vCPU to check.
357 * Checks whether the CPU has work to do.
359 * Returns: %true if the CPU has work, %false otherwise.
361 bool qemu_cpu_has_work(CPUState *cpu);
365 * @cpu: The vCPU to check against.
367 * Checks whether the caller is executing on the vCPU thread.
369 * Returns: %true if called from @cpu's thread, %false otherwise.
371 bool qemu_cpu_is_self(CPUState *cpu);
375 * @cpu: The vCPU to kick.
377 * Kicks @cpu's thread.
379 void qemu_cpu_kick(CPUState *cpu);
383 * @cpu: The CPU to check.
385 * Checks whether the CPU is stopped.
387 * Returns: %true if run state is not running or if artificially stopped;
390 bool cpu_is_stopped(CPUState *cpu);
394 * @cpu: The vCPU to run on.
395 * @func: The function to be executed.
396 * @data: Data to pass to the function.
398 * Schedules the function @func for execution on the vCPU @cpu.
400 void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data);
404 * @cpu: The vCPU to run on.
405 * @func: The function to be executed.
406 * @data: Data to pass to the function.
408 * Schedules the function @func for execution on the vCPU @cpu asynchronously.
410 void async_run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data);
414 * @func: The function to be executed.
415 * @data: Data to pass to the function.
417 * Executes @func for each CPU.
419 void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data);
423 * @index: The CPUState@cpu_index value of the CPU to obtain.
425 * Gets a CPU matching @index.
427 * Returns: The CPU or %NULL if there is no matching CPU.
429 CPUState *qemu_get_cpu(int index);
433 * @id: Guest-exposed CPU ID to lookup.
435 * Search for CPU with specified ID.
437 * Returns: %true - CPU is found, %false - CPU isn't found.
439 bool cpu_exists(int64_t id);
441 #ifndef CONFIG_USER_ONLY
443 typedef void (*CPUInterruptHandler)(CPUState *, int);
445 extern CPUInterruptHandler cpu_interrupt_handler;
449 * @cpu: The CPU to set an interrupt on.
450 * @mask: The interupts to set.
452 * Invokes the interrupt handler.
454 static inline void cpu_interrupt(CPUState *cpu, int mask)
456 cpu_interrupt_handler(cpu, mask);
459 #else /* USER_ONLY */
461 void cpu_interrupt(CPUState *cpu, int mask);
463 #endif /* USER_ONLY */
465 #ifndef CONFIG_USER_ONLY
467 static inline void cpu_unassigned_access(CPUState *cpu, hwaddr addr,
468 bool is_write, bool is_exec,
469 int opaque, unsigned size)
471 CPUClass *cc = CPU_GET_CLASS(cpu);
473 if (cc->do_unassigned_access) {
474 cc->do_unassigned_access(cpu, addr, is_write, is_exec, opaque, size);
481 * cpu_reset_interrupt:
482 * @cpu: The CPU to clear the interrupt on.
483 * @mask: The interrupt mask to clear.
485 * Resets interrupts on the vCPU @cpu.
487 void cpu_reset_interrupt(CPUState *cpu, int mask);
491 * @cpu: The CPU to exit.
493 * Requests the CPU @cpu to exit execution.
495 void cpu_exit(CPUState *cpu);
499 * @cpu: The CPU to resume.
501 * Resumes CPU, i.e. puts CPU into runnable state.
503 void cpu_resume(CPUState *cpu);
507 * @cpu: The vCPU to initialize.
509 * Initializes a vCPU.
511 void qemu_init_vcpu(CPUState *cpu);
513 #ifdef CONFIG_SOFTMMU
514 extern const struct VMStateDescription vmstate_cpu_common;
516 #define vmstate_cpu_common vmstate_dummy
519 #define VMSTATE_CPU() { \
520 .name = "parent_obj", \
521 .size = sizeof(CPUState), \
522 .vmsd = &vmstate_cpu_common, \
523 .flags = VMS_STRUCT, \