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>
23 #include "hw/qdev-core.h"
24 #include "disas/dis-asm.h"
25 #include "exec/cpu-common.h"
26 #include "exec/hwaddr.h"
27 #include "exec/memattrs.h"
28 #include "qapi/qapi-types-run-state.h"
29 #include "qemu/bitmap.h"
30 #include "qemu/rcu_queue.h"
31 #include "qemu/queue.h"
32 #include "qemu/thread.h"
33 #include "qemu/plugin.h"
34 #include "qom/object.h"
36 typedef int (*WriteCoreDumpFunction)(const void *buf, size_t size,
41 * @section_id: QEMU-cpu
43 * @short_description: Base class for all CPUs
46 #define TYPE_CPU "cpu"
48 /* Since this macro is used a lot in hot code paths and in conjunction with
49 * FooCPU *foo_env_get_cpu(), we deviate from usual QOM practice by using
52 #define CPU(obj) ((CPUState *)(obj))
55 * The class checkers bring in CPU_GET_CLASS() which is potentially
56 * expensive given the eventual call to
57 * object_class_dynamic_cast_assert(). Because of this the CPUState
58 * has a cached value for the class in cs->cc which is set up in
59 * cpu_exec_realizefn() for use in hot code paths.
61 typedef struct CPUClass CPUClass;
62 DECLARE_CLASS_CHECKERS(CPUClass, CPU,
66 * OBJECT_DECLARE_CPU_TYPE:
67 * @CpuInstanceType: instance struct name
68 * @CpuClassType: class struct name
69 * @CPU_MODULE_OBJ_NAME: the CPU name in uppercase with underscore separators
71 * This macro is typically used in "cpu-qom.h" header file, and will:
73 * - create the typedefs for the CPU object and class structs
74 * - register the type for use with g_autoptr
75 * - provide three standard type cast functions
77 * The object struct and class struct need to be declared manually.
79 #define OBJECT_DECLARE_CPU_TYPE(CpuInstanceType, CpuClassType, CPU_MODULE_OBJ_NAME) \
80 typedef struct ArchCPU CpuInstanceType; \
81 OBJECT_DECLARE_TYPE(ArchCPU, CpuClassType, CPU_MODULE_OBJ_NAME);
83 typedef enum MMUAccessType {
89 typedef struct CPUWatchpoint CPUWatchpoint;
91 /* see tcg-cpu-ops.h */
97 /* see sysemu-cpu-ops.h */
102 * @class_by_name: Callback to map -cpu command line model name to an
103 * instantiatable CPU type.
104 * @parse_features: Callback to parse command line arguments.
105 * @reset_dump_flags: #CPUDumpFlags to use for reset logging.
106 * @has_work: Callback for checking if there is work to do.
107 * @memory_rw_debug: Callback for GDB memory access.
108 * @dump_state: Callback for dumping state.
109 * @get_arch_id: Callback for getting architecture-dependent CPU ID.
110 * @set_pc: Callback for setting the Program Counter register. This
111 * should have the semantics used by the target architecture when
112 * setting the PC from a source such as an ELF file entry point;
113 * for example on Arm it will also set the Thumb mode bit based
114 * on the least significant bit of the new PC value.
115 * If the target behaviour here is anything other than "set
116 * the PC register to the value passed in" then the target must
117 * also implement the synchronize_from_tb hook.
118 * @get_pc: Callback for getting the Program Counter register.
119 * As above, with the semantics of the target architecture.
120 * @gdb_read_register: Callback for letting GDB read a register.
121 * @gdb_write_register: Callback for letting GDB write a register.
122 * @gdb_adjust_breakpoint: Callback for adjusting the address of a
123 * breakpoint. Used by AVR to handle a gdb mis-feature with
124 * its Harvard architecture split code and data.
125 * @gdb_num_core_regs: Number of core registers accessible to GDB.
126 * @gdb_core_xml_file: File name for core registers GDB XML description.
127 * @gdb_stop_before_watchpoint: Indicates whether GDB expects the CPU to stop
128 * before the insn which triggers a watchpoint rather than after it.
129 * @gdb_arch_name: Optional callback that returns the architecture name known
130 * to GDB. The caller must free the returned string with g_free.
131 * @gdb_get_dynamic_xml: Callback to return dynamically generated XML for the
132 * gdb stub. Returns a pointer to the XML contents for the specified XML file
133 * or NULL if the CPU doesn't have a dynamically generated content for it.
134 * @disas_set_info: Setup architecture specific components of disassembly info
135 * @adjust_watchpoint_address: Perform a target-specific adjustment to an
136 * address before attempting to match it against watchpoints.
137 * @deprecation_note: If this CPUClass is deprecated, this field provides
138 * related information.
140 * Represents a CPU family or model.
144 DeviceClass parent_class;
147 ObjectClass *(*class_by_name)(const char *cpu_model);
148 void (*parse_features)(const char *typename, char *str, Error **errp);
150 bool (*has_work)(CPUState *cpu);
151 int (*memory_rw_debug)(CPUState *cpu, vaddr addr,
152 uint8_t *buf, int len, bool is_write);
153 void (*dump_state)(CPUState *cpu, FILE *, int flags);
154 int64_t (*get_arch_id)(CPUState *cpu);
155 void (*set_pc)(CPUState *cpu, vaddr value);
156 vaddr (*get_pc)(CPUState *cpu);
157 int (*gdb_read_register)(CPUState *cpu, GByteArray *buf, int reg);
158 int (*gdb_write_register)(CPUState *cpu, uint8_t *buf, int reg);
159 vaddr (*gdb_adjust_breakpoint)(CPUState *cpu, vaddr addr);
161 const char *gdb_core_xml_file;
162 gchar * (*gdb_arch_name)(CPUState *cpu);
163 const char * (*gdb_get_dynamic_xml)(CPUState *cpu, const char *xmlname);
165 void (*disas_set_info)(CPUState *cpu, disassemble_info *info);
167 const char *deprecation_note;
168 struct AccelCPUClass *accel_cpu;
170 /* when system emulation is not available, this pointer is NULL */
171 const struct SysemuCPUOps *sysemu_ops;
173 /* when TCG is not available, this pointer is NULL */
174 const struct TCGCPUOps *tcg_ops;
177 * if not NULL, this is called in order for the CPUClass to initialize
178 * class data that depends on the accelerator, see accel/accel-common.c.
180 void (*init_accel_cpu)(struct AccelCPUClass *accel_cpu, CPUClass *cc);
183 * Keep non-pointer data at the end to minimize holes.
185 int reset_dump_flags;
186 int gdb_num_core_regs;
187 bool gdb_stop_before_watchpoint;
191 * Low 16 bits: number of cycles left, used only in icount mode.
192 * High 16 bits: Set to -1 to force TCG to stop executing linked TBs
193 * for this CPU and return to its top level loop (even in non-icount mode).
194 * This allows a single read-compare-cbranch-write sequence to test
195 * for both decrementer underflow and exceptions.
197 typedef union IcountDecr {
210 typedef struct CPUBreakpoint {
212 int flags; /* BP_* */
213 QTAILQ_ENTRY(CPUBreakpoint) entry;
216 struct CPUWatchpoint {
221 int flags; /* BP_* */
222 QTAILQ_ENTRY(CPUWatchpoint) entry;
227 * For plugins we sometime need to save the resolved iotlb data before
228 * the memory regions get moved around by io_writex.
230 typedef struct SavedIOTLB {
231 MemoryRegionSection *section;
239 struct hax_vcpu_state;
240 struct hvf_vcpu_state;
244 /* The union type allows passing of 64 bit target pointers on 32 bit
245 * hosts in a single parameter
249 unsigned long host_ulong;
254 #define RUN_ON_CPU_HOST_PTR(p) ((run_on_cpu_data){.host_ptr = (p)})
255 #define RUN_ON_CPU_HOST_INT(i) ((run_on_cpu_data){.host_int = (i)})
256 #define RUN_ON_CPU_HOST_ULONG(ul) ((run_on_cpu_data){.host_ulong = (ul)})
257 #define RUN_ON_CPU_TARGET_PTR(v) ((run_on_cpu_data){.target_ptr = (v)})
258 #define RUN_ON_CPU_NULL RUN_ON_CPU_HOST_PTR(NULL)
260 typedef void (*run_on_cpu_func)(CPUState *cpu, run_on_cpu_data data);
262 struct qemu_work_item;
264 #define CPU_UNSET_NUMA_NODE_ID -1
265 #define CPU_TRACE_DSTATE_MAX_EVENTS 32
269 * @cpu_index: CPU index (informative).
270 * @cluster_index: Identifies which cluster this CPU is in.
271 * For boards which don't define clusters or for "loose" CPUs not assigned
272 * to a cluster this will be UNASSIGNED_CLUSTER_INDEX; otherwise it will
273 * be the same as the cluster-id property of the CPU object's TYPE_CPU_CLUSTER
275 * @tcg_cflags: Pre-computed cflags for this cpu.
276 * @nr_cores: Number of cores within this CPU package.
277 * @nr_threads: Number of threads within this CPU.
278 * @running: #true if CPU is currently running (lockless).
279 * @has_waiter: #true if a CPU is currently waiting for the cpu_exec_end;
280 * valid under cpu_list_lock.
281 * @created: Indicates whether the CPU thread has been successfully created.
282 * @interrupt_request: Indicates a pending interrupt request.
283 * @halted: Nonzero if the CPU is in suspended state.
284 * @stop: Indicates a pending stop request.
285 * @stopped: Indicates the CPU has been artificially stopped.
286 * @unplug: Indicates a pending CPU unplug request.
287 * @crash_occurred: Indicates the OS reported a crash (panic) for this CPU
288 * @singlestep_enabled: Flags for single-stepping.
289 * @icount_extra: Instructions until next timer event.
290 * @can_do_io: Nonzero if memory-mapped IO is safe. Deterministic execution
291 * requires that IO only be performed on the last instruction of a TB
292 * so that interrupts take effect immediately.
293 * @cpu_ases: Pointer to array of CPUAddressSpaces (which define the
294 * AddressSpaces this CPU has)
295 * @num_ases: number of CPUAddressSpaces in @cpu_ases
296 * @as: Pointer to the first AddressSpace, for the convenience of targets which
297 * only have a single AddressSpace
298 * @env_ptr: Pointer to subclass-specific CPUArchState field.
299 * @icount_decr_ptr: Pointer to IcountDecr field within subclass.
300 * @gdb_regs: Additional GDB registers.
301 * @gdb_num_regs: Number of total registers accessible to GDB.
302 * @gdb_num_g_regs: Number of registers in GDB 'g' packets.
303 * @next_cpu: Next CPU sharing TB cache.
304 * @opaque: User data.
305 * @mem_io_pc: Host Program Counter at which the memory was accessed.
306 * @kvm_fd: vCPU file descriptor for KVM.
307 * @work_mutex: Lock to prevent multiple access to @work_list.
308 * @work_list: List of pending asynchronous work.
309 * @trace_dstate_delayed: Delayed changes to trace_dstate (includes all changes
311 * @trace_dstate: Dynamic tracing state of events for this vCPU (bitmask).
312 * @plugin_mask: Plugin event bitmap. Modified only via async work.
313 * @ignore_memory_transaction_failures: Cached copy of the MachineState
314 * flag of the same name: allows the board to suppress calling of the
315 * CPU do_transaction_failed hook function.
316 * @kvm_dirty_gfns: Points to the KVM dirty ring for this CPU when KVM dirty
318 * @kvm_fetch_index: Keeps the index that we last fetched from the per-vCPU
319 * dirty ring structure.
321 * State of one CPU core or thread.
325 DeviceState parent_obj;
326 /* cache to avoid expensive CPU_GET_CLASS */
333 struct QemuThread *thread;
339 bool running, has_waiter;
340 struct QemuCond *halt_cond;
346 /* Should CPU start in powered-off state? */
347 bool start_powered_off;
352 bool in_exclusive_context;
353 uint32_t cflags_next_tb;
354 /* updates protected by BQL */
355 uint32_t interrupt_request;
356 int singlestep_enabled;
357 int64_t icount_budget;
358 int64_t icount_extra;
359 uint64_t random_seed;
362 QemuMutex work_mutex;
363 QSIMPLEQ_HEAD(, qemu_work_item) work_list;
365 CPUAddressSpace *cpu_ases;
368 MemoryRegion *memory;
370 CPUArchState *env_ptr;
371 IcountDecr *icount_decr_ptr;
373 CPUJumpCache *tb_jmp_cache;
375 struct GDBRegisterState *gdb_regs;
378 QTAILQ_ENTRY(CPUState) node;
380 /* ice debug support */
381 QTAILQ_HEAD(, CPUBreakpoint) breakpoints;
383 QTAILQ_HEAD(, CPUWatchpoint) watchpoints;
384 CPUWatchpoint *watchpoint_hit;
388 /* In order to avoid passing too many arguments to the MMIO helpers,
389 * we store some rarely used information in the CPU context.
393 /* Only used in KVM */
395 struct KVMState *kvm_state;
396 struct kvm_run *kvm_run;
397 struct kvm_dirty_gfn *kvm_dirty_gfns;
398 uint32_t kvm_fetch_index;
399 uint64_t dirty_pages;
401 /* Used for events with 'vcpu' and *without* the 'disabled' properties */
402 DECLARE_BITMAP(trace_dstate_delayed, CPU_TRACE_DSTATE_MAX_EVENTS);
403 DECLARE_BITMAP(trace_dstate, CPU_TRACE_DSTATE_MAX_EVENTS);
405 DECLARE_BITMAP(plugin_mask, QEMU_PLUGIN_EV_MAX);
408 GArray *plugin_mem_cbs;
409 /* saved iotlb data from io_writex */
410 SavedIOTLB saved_iotlb;
413 /* TODO Move common fields from CPUArchState here. */
419 int32_t exception_index;
421 /* shared by kvm, hax and hvf */
424 /* Used to keep track of an outstanding cpu throttle thread for migration
427 bool throttle_thread_scheduled;
430 * Sleep throttle_us_per_full microseconds once dirty ring is full
431 * if dirty page rate limit is enabled.
433 int64_t throttle_us_per_full;
435 bool ignore_memory_transaction_failures;
437 /* Used for user-only emulation of prctl(PR_SET_UNALIGN). */
438 bool prctl_unalign_sigbus;
440 struct hax_vcpu_state *hax_vcpu;
442 struct hvf_vcpu_state *hvf;
444 /* track IOMMUs whose translations we've cached in the TCG TLB */
445 GArray *iommu_notifiers;
448 typedef QTAILQ_HEAD(CPUTailQ, CPUState) CPUTailQ;
449 extern CPUTailQ cpus;
451 #define first_cpu QTAILQ_FIRST_RCU(&cpus)
452 #define CPU_NEXT(cpu) QTAILQ_NEXT_RCU(cpu, node)
453 #define CPU_FOREACH(cpu) QTAILQ_FOREACH_RCU(cpu, &cpus, node)
454 #define CPU_FOREACH_SAFE(cpu, next_cpu) \
455 QTAILQ_FOREACH_SAFE_RCU(cpu, &cpus, node, next_cpu)
457 extern __thread CPUState *current_cpu;
460 * qemu_tcg_mttcg_enabled:
461 * Check whether we are running MultiThread TCG or not.
463 * Returns: %true if we are in MTTCG mode %false otherwise.
465 extern bool mttcg_enabled;
466 #define qemu_tcg_mttcg_enabled() (mttcg_enabled)
469 * cpu_paging_enabled:
470 * @cpu: The CPU whose state is to be inspected.
472 * Returns: %true if paging is enabled, %false otherwise.
474 bool cpu_paging_enabled(const CPUState *cpu);
477 * cpu_get_memory_mapping:
478 * @cpu: The CPU whose memory mappings are to be obtained.
479 * @list: Where to write the memory mappings to.
480 * @errp: Pointer for reporting an #Error.
482 void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
485 #if !defined(CONFIG_USER_ONLY)
488 * cpu_write_elf64_note:
489 * @f: pointer to a function that writes memory to a file
490 * @cpu: The CPU whose memory is to be dumped
491 * @cpuid: ID number of the CPU
492 * @opaque: pointer to the CPUState struct
494 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
495 int cpuid, void *opaque);
498 * cpu_write_elf64_qemunote:
499 * @f: pointer to a function that writes memory to a file
500 * @cpu: The CPU whose memory is to be dumped
501 * @cpuid: ID number of the CPU
502 * @opaque: pointer to the CPUState struct
504 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
508 * cpu_write_elf32_note:
509 * @f: pointer to a function that writes memory to a file
510 * @cpu: The CPU whose memory is to be dumped
511 * @cpuid: ID number of the CPU
512 * @opaque: pointer to the CPUState struct
514 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
515 int cpuid, void *opaque);
518 * cpu_write_elf32_qemunote:
519 * @f: pointer to a function that writes memory to a file
520 * @cpu: The CPU whose memory is to be dumped
521 * @cpuid: ID number of the CPU
522 * @opaque: pointer to the CPUState struct
524 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
528 * cpu_get_crash_info:
529 * @cpu: The CPU to get crash information for
531 * Gets the previously saved crash information.
532 * Caller is responsible for freeing the data.
534 GuestPanicInformation *cpu_get_crash_info(CPUState *cpu);
536 #endif /* !CONFIG_USER_ONLY */
541 * @CPU_DUMP_FPU: dump FPU register state, not just integer
542 * @CPU_DUMP_CCOP: dump info about TCG QEMU's condition code optimization state
545 CPU_DUMP_CODE = 0x00010000,
546 CPU_DUMP_FPU = 0x00020000,
547 CPU_DUMP_CCOP = 0x00040000,
552 * @cpu: The CPU whose state is to be dumped.
553 * @f: If non-null, dump to this stream, else to current print sink.
557 void cpu_dump_state(CPUState *cpu, FILE *f, int flags);
559 #ifndef CONFIG_USER_ONLY
561 * cpu_get_phys_page_attrs_debug:
562 * @cpu: The CPU to obtain the physical page address for.
563 * @addr: The virtual address.
564 * @attrs: Updated on return with the memory transaction attributes to use
567 * Obtains the physical page corresponding to a virtual one, together
568 * with the corresponding memory transaction attributes to use for the access.
569 * Use it only for debugging because no protection checks are done.
571 * Returns: Corresponding physical page address or -1 if no page found.
573 hwaddr cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr,
577 * cpu_get_phys_page_debug:
578 * @cpu: The CPU to obtain the physical page address for.
579 * @addr: The virtual address.
581 * Obtains the physical page corresponding to a virtual one.
582 * Use it only for debugging because no protection checks are done.
584 * Returns: Corresponding physical page address or -1 if no page found.
586 hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
588 /** cpu_asidx_from_attrs:
590 * @attrs: memory transaction attributes
592 * Returns the address space index specifying the CPU AddressSpace
593 * to use for a memory access with the given transaction attributes.
595 int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs);
598 * cpu_virtio_is_big_endian:
601 * Returns %true if a CPU which supports runtime configurable endianness
602 * is currently big-endian.
604 bool cpu_virtio_is_big_endian(CPUState *cpu);
606 #endif /* CONFIG_USER_ONLY */
610 * @cpu: The CPU to be added to the list of CPUs.
612 void cpu_list_add(CPUState *cpu);
616 * @cpu: The CPU to be removed from the list of CPUs.
618 void cpu_list_remove(CPUState *cpu);
622 * @cpu: The CPU whose state is to be reset.
624 void cpu_reset(CPUState *cpu);
628 * @typename: The CPU base type.
629 * @cpu_model: The model string without any parameters.
631 * Looks up a CPU #ObjectClass matching name @cpu_model.
633 * Returns: A #CPUClass or %NULL if not matching class is found.
635 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
639 * @typename: The CPU type.
641 * Instantiates a CPU and realizes the CPU.
643 * Returns: A #CPUState or %NULL if an error occurred.
645 CPUState *cpu_create(const char *typename);
649 * @cpu_option: The -cpu option including optional parameters.
651 * processes optional parameters and registers them as global properties
653 * Returns: type of CPU to create or prints error and terminates process
654 * if an error occurred.
656 const char *parse_cpu_option(const char *cpu_option);
660 * @cpu: The vCPU to check.
662 * Checks whether the CPU has work to do.
664 * Returns: %true if the CPU has work, %false otherwise.
666 static inline bool cpu_has_work(CPUState *cpu)
668 CPUClass *cc = CPU_GET_CLASS(cpu);
670 g_assert(cc->has_work);
671 return cc->has_work(cpu);
676 * @cpu: The vCPU to check against.
678 * Checks whether the caller is executing on the vCPU thread.
680 * Returns: %true if called from @cpu's thread, %false otherwise.
682 bool qemu_cpu_is_self(CPUState *cpu);
686 * @cpu: The vCPU to kick.
688 * Kicks @cpu's thread.
690 void qemu_cpu_kick(CPUState *cpu);
694 * @cpu: The CPU to check.
696 * Checks whether the CPU is stopped.
698 * Returns: %true if run state is not running or if artificially stopped;
701 bool cpu_is_stopped(CPUState *cpu);
705 * @cpu: The vCPU to run on.
706 * @func: The function to be executed.
707 * @data: Data to pass to the function.
708 * @mutex: Mutex to release while waiting for @func to run.
710 * Used internally in the implementation of run_on_cpu.
712 void do_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data,
717 * @cpu: The vCPU to run on.
718 * @func: The function to be executed.
719 * @data: Data to pass to the function.
721 * Schedules the function @func for execution on the vCPU @cpu.
723 void run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data);
727 * @cpu: The vCPU to run on.
728 * @func: The function to be executed.
729 * @data: Data to pass to the function.
731 * Schedules the function @func for execution on the vCPU @cpu asynchronously.
733 void async_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data);
736 * async_safe_run_on_cpu:
737 * @cpu: The vCPU to run on.
738 * @func: The function to be executed.
739 * @data: Data to pass to the function.
741 * Schedules the function @func for execution on the vCPU @cpu asynchronously,
742 * while all other vCPUs are sleeping.
744 * Unlike run_on_cpu and async_run_on_cpu, the function is run outside the
747 void async_safe_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data);
750 * cpu_in_exclusive_context()
751 * @cpu: The vCPU to check
753 * Returns true if @cpu is an exclusive context, for example running
754 * something which has previously been queued via async_safe_run_on_cpu().
756 static inline bool cpu_in_exclusive_context(const CPUState *cpu)
758 return cpu->in_exclusive_context;
763 * @index: The CPUState@cpu_index value of the CPU to obtain.
765 * Gets a CPU matching @index.
767 * Returns: The CPU or %NULL if there is no matching CPU.
769 CPUState *qemu_get_cpu(int index);
773 * @id: Guest-exposed CPU ID to lookup.
775 * Search for CPU with specified ID.
777 * Returns: %true - CPU is found, %false - CPU isn't found.
779 bool cpu_exists(int64_t id);
783 * @id: Guest-exposed CPU ID of the CPU to obtain.
785 * Get a CPU with matching @id.
787 * Returns: The CPU or %NULL if there is no matching CPU.
789 CPUState *cpu_by_arch_id(int64_t id);
793 * @cpu: The CPU to set an interrupt on.
794 * @mask: The interrupts to set.
796 * Invokes the interrupt handler.
799 void cpu_interrupt(CPUState *cpu, int mask);
803 * @cpu: The CPU to set the program counter for.
804 * @addr: Program counter value.
806 * Sets the program counter for a CPU.
808 static inline void cpu_set_pc(CPUState *cpu, vaddr addr)
810 CPUClass *cc = CPU_GET_CLASS(cpu);
812 cc->set_pc(cpu, addr);
816 * cpu_reset_interrupt:
817 * @cpu: The CPU to clear the interrupt on.
818 * @mask: The interrupt mask to clear.
820 * Resets interrupts on the vCPU @cpu.
822 void cpu_reset_interrupt(CPUState *cpu, int mask);
826 * @cpu: The CPU to exit.
828 * Requests the CPU @cpu to exit execution.
830 void cpu_exit(CPUState *cpu);
834 * @cpu: The CPU to resume.
836 * Resumes CPU, i.e. puts CPU into runnable state.
838 void cpu_resume(CPUState *cpu);
842 * @cpu: The CPU to remove.
844 * Requests the CPU to be removed and waits till it is removed.
846 void cpu_remove_sync(CPUState *cpu);
849 * process_queued_cpu_work() - process all items on CPU work queue
850 * @cpu: The CPU which work queue to process.
852 void process_queued_cpu_work(CPUState *cpu);
856 * @cpu: The CPU for the current thread.
858 * Record that a CPU has started execution and can be interrupted with
861 void cpu_exec_start(CPUState *cpu);
865 * @cpu: The CPU for the current thread.
867 * Record that a CPU has stopped execution and exclusive sections
868 * can be executed without interrupting it.
870 void cpu_exec_end(CPUState *cpu);
875 * Wait for a concurrent exclusive section to end, and then start
876 * a section of work that is run while other CPUs are not running
877 * between cpu_exec_start and cpu_exec_end. CPUs that are running
878 * cpu_exec are exited immediately. CPUs that call cpu_exec_start
879 * during the exclusive section go to sleep until this CPU calls
882 void start_exclusive(void);
887 * Concludes an exclusive execution section started by start_exclusive.
889 void end_exclusive(void);
893 * @cpu: The vCPU to initialize.
895 * Initializes a vCPU.
897 void qemu_init_vcpu(CPUState *cpu);
899 #define SSTEP_ENABLE 0x1 /* Enable simulated HW single stepping */
900 #define SSTEP_NOIRQ 0x2 /* Do not use IRQ while single stepping */
901 #define SSTEP_NOTIMER 0x4 /* Do not Timers while single stepping */
905 * @cpu: CPU to the flags for.
906 * @enabled: Flags to enable.
908 * Enables or disables single-stepping for @cpu.
910 void cpu_single_step(CPUState *cpu, int enabled);
912 /* Breakpoint/watchpoint flags */
913 #define BP_MEM_READ 0x01
914 #define BP_MEM_WRITE 0x02
915 #define BP_MEM_ACCESS (BP_MEM_READ | BP_MEM_WRITE)
916 #define BP_STOP_BEFORE_ACCESS 0x04
917 /* 0x08 currently unused */
920 #define BP_ANY (BP_GDB | BP_CPU)
921 #define BP_WATCHPOINT_HIT_READ 0x40
922 #define BP_WATCHPOINT_HIT_WRITE 0x80
923 #define BP_WATCHPOINT_HIT (BP_WATCHPOINT_HIT_READ | BP_WATCHPOINT_HIT_WRITE)
925 int cpu_breakpoint_insert(CPUState *cpu, vaddr pc, int flags,
926 CPUBreakpoint **breakpoint);
927 int cpu_breakpoint_remove(CPUState *cpu, vaddr pc, int flags);
928 void cpu_breakpoint_remove_by_ref(CPUState *cpu, CPUBreakpoint *breakpoint);
929 void cpu_breakpoint_remove_all(CPUState *cpu, int mask);
931 /* Return true if PC matches an installed breakpoint. */
932 static inline bool cpu_breakpoint_test(CPUState *cpu, vaddr pc, int mask)
936 if (unlikely(!QTAILQ_EMPTY(&cpu->breakpoints))) {
937 QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
938 if (bp->pc == pc && (bp->flags & mask)) {
946 #ifdef CONFIG_USER_ONLY
947 static inline int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
948 int flags, CPUWatchpoint **watchpoint)
953 static inline int cpu_watchpoint_remove(CPUState *cpu, vaddr addr,
954 vaddr len, int flags)
959 static inline void cpu_watchpoint_remove_by_ref(CPUState *cpu,
964 static inline void cpu_watchpoint_remove_all(CPUState *cpu, int mask)
968 static inline void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
969 MemTxAttrs atr, int fl, uintptr_t ra)
973 static inline int cpu_watchpoint_address_matches(CPUState *cpu,
974 vaddr addr, vaddr len)
979 int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
980 int flags, CPUWatchpoint **watchpoint);
981 int cpu_watchpoint_remove(CPUState *cpu, vaddr addr,
982 vaddr len, int flags);
983 void cpu_watchpoint_remove_by_ref(CPUState *cpu, CPUWatchpoint *watchpoint);
984 void cpu_watchpoint_remove_all(CPUState *cpu, int mask);
987 * cpu_check_watchpoint:
989 * @addr: guest virtual address
990 * @len: access length
991 * @attrs: memory access attributes
992 * @flags: watchpoint access type
993 * @ra: unwind return address
995 * Check for a watchpoint hit in [addr, addr+len) of the type
996 * specified by @flags. Exit via exception with a hit.
998 void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
999 MemTxAttrs attrs, int flags, uintptr_t ra);
1002 * cpu_watchpoint_address_matches:
1004 * @addr: guest virtual address
1005 * @len: access length
1007 * Return the watchpoint flags that apply to [addr, addr+len).
1008 * If no watchpoint is registered for the range, the result is 0.
1010 int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len);
1014 * cpu_get_address_space:
1015 * @cpu: CPU to get address space from
1016 * @asidx: index identifying which address space to get
1018 * Return the requested address space of this CPU. @asidx
1019 * specifies which address space to read.
1021 AddressSpace *cpu_get_address_space(CPUState *cpu, int asidx);
1023 G_NORETURN void cpu_abort(CPUState *cpu, const char *fmt, ...)
1024 G_GNUC_PRINTF(2, 3);
1026 /* $(top_srcdir)/cpu.c */
1027 void cpu_class_init_props(DeviceClass *dc);
1028 void cpu_exec_initfn(CPUState *cpu);
1029 void cpu_exec_realizefn(CPUState *cpu, Error **errp);
1030 void cpu_exec_unrealizefn(CPUState *cpu);
1033 * target_words_bigendian:
1034 * Returns true if the (default) endianness of the target is big endian,
1035 * false otherwise. Note that in target-specific code, you can use
1036 * TARGET_BIG_ENDIAN directly instead. On the other hand, common
1037 * code should normally never need to know about the endianness of the
1038 * target, so please do *not* use this function unless you know very well
1039 * what you are doing!
1041 bool target_words_bigendian(void);
1043 void page_size_init(void);
1047 #ifdef CONFIG_SOFTMMU
1049 extern const VMStateDescription vmstate_cpu_common;
1051 #define VMSTATE_CPU() { \
1052 .name = "parent_obj", \
1053 .size = sizeof(CPUState), \
1054 .vmsd = &vmstate_cpu_common, \
1055 .flags = VMS_STRUCT, \
1058 #endif /* CONFIG_SOFTMMU */
1060 #endif /* NEED_CPU_H */
1062 #define UNASSIGNED_CPU_INDEX -1
1063 #define UNASSIGNED_CLUSTER_INDEX -1