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-event.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 * Under TCG this value is propagated to @tcg_cflags.
276 * See TranslationBlock::TCG CF_CLUSTER_MASK.
277 * @tcg_cflags: Pre-computed cflags for this cpu.
278 * @nr_cores: Number of cores within this CPU package.
279 * @nr_threads: Number of threads within this CPU.
280 * @running: #true if CPU is currently running (lockless).
281 * @has_waiter: #true if a CPU is currently waiting for the cpu_exec_end;
282 * valid under cpu_list_lock.
283 * @created: Indicates whether the CPU thread has been successfully created.
284 * @interrupt_request: Indicates a pending interrupt request.
285 * @halted: Nonzero if the CPU is in suspended state.
286 * @stop: Indicates a pending stop request.
287 * @stopped: Indicates the CPU has been artificially stopped.
288 * @unplug: Indicates a pending CPU unplug request.
289 * @crash_occurred: Indicates the OS reported a crash (panic) for this CPU
290 * @singlestep_enabled: Flags for single-stepping.
291 * @icount_extra: Instructions until next timer event.
292 * @can_do_io: Nonzero if memory-mapped IO is safe. Deterministic execution
293 * requires that IO only be performed on the last instruction of a TB
294 * so that interrupts take effect immediately.
295 * @cpu_ases: Pointer to array of CPUAddressSpaces (which define the
296 * AddressSpaces this CPU has)
297 * @num_ases: number of CPUAddressSpaces in @cpu_ases
298 * @as: Pointer to the first AddressSpace, for the convenience of targets which
299 * only have a single AddressSpace
300 * @env_ptr: Pointer to subclass-specific CPUArchState field.
301 * @icount_decr_ptr: Pointer to IcountDecr field within subclass.
302 * @gdb_regs: Additional GDB registers.
303 * @gdb_num_regs: Number of total registers accessible to GDB.
304 * @gdb_num_g_regs: Number of registers in GDB 'g' packets.
305 * @next_cpu: Next CPU sharing TB cache.
306 * @opaque: User data.
307 * @mem_io_pc: Host Program Counter at which the memory was accessed.
308 * @kvm_fd: vCPU file descriptor for KVM.
309 * @work_mutex: Lock to prevent multiple access to @work_list.
310 * @work_list: List of pending asynchronous work.
311 * @trace_dstate_delayed: Delayed changes to trace_dstate (includes all changes
313 * @trace_dstate: Dynamic tracing state of events for this vCPU (bitmask).
314 * @plugin_mask: Plugin event bitmap. Modified only via async work.
315 * @ignore_memory_transaction_failures: Cached copy of the MachineState
316 * flag of the same name: allows the board to suppress calling of the
317 * CPU do_transaction_failed hook function.
318 * @kvm_dirty_gfns: Points to the KVM dirty ring for this CPU when KVM dirty
320 * @kvm_fetch_index: Keeps the index that we last fetched from the per-vCPU
321 * dirty ring structure.
323 * State of one CPU core or thread.
327 DeviceState parent_obj
;
328 /* cache to avoid expensive CPU_GET_CLASS */
335 struct QemuThread
*thread
;
341 bool running
, has_waiter
;
342 struct QemuCond
*halt_cond
;
348 /* Should CPU start in powered-off state? */
349 bool start_powered_off
;
354 int exclusive_context_count
;
355 uint32_t cflags_next_tb
;
356 /* updates protected by BQL */
357 uint32_t interrupt_request
;
358 int singlestep_enabled
;
359 int64_t icount_budget
;
360 int64_t icount_extra
;
361 uint64_t random_seed
;
364 QemuMutex work_mutex
;
365 QSIMPLEQ_HEAD(, qemu_work_item
) work_list
;
367 CPUAddressSpace
*cpu_ases
;
370 MemoryRegion
*memory
;
372 CPUArchState
*env_ptr
;
373 IcountDecr
*icount_decr_ptr
;
375 CPUJumpCache
*tb_jmp_cache
;
377 struct GDBRegisterState
*gdb_regs
;
380 QTAILQ_ENTRY(CPUState
) node
;
382 /* ice debug support */
383 QTAILQ_HEAD(, CPUBreakpoint
) breakpoints
;
385 QTAILQ_HEAD(, CPUWatchpoint
) watchpoints
;
386 CPUWatchpoint
*watchpoint_hit
;
390 /* In order to avoid passing too many arguments to the MMIO helpers,
391 * we store some rarely used information in the CPU context.
395 /* Only used in KVM */
397 struct KVMState
*kvm_state
;
398 struct kvm_run
*kvm_run
;
399 struct kvm_dirty_gfn
*kvm_dirty_gfns
;
400 uint32_t kvm_fetch_index
;
401 uint64_t dirty_pages
;
403 /* Use by accel-block: CPU is executing an ioctl() */
404 QemuLockCnt in_ioctl_lock
;
406 /* Used for events with 'vcpu' and *without* the 'disabled' properties */
407 DECLARE_BITMAP(trace_dstate_delayed
, CPU_TRACE_DSTATE_MAX_EVENTS
);
408 DECLARE_BITMAP(trace_dstate
, CPU_TRACE_DSTATE_MAX_EVENTS
);
410 DECLARE_BITMAP(plugin_mask
, QEMU_PLUGIN_EV_MAX
);
413 GArray
*plugin_mem_cbs
;
414 /* saved iotlb data from io_writex */
415 SavedIOTLB saved_iotlb
;
418 /* TODO Move common fields from CPUArchState here. */
424 int32_t exception_index
;
426 /* shared by kvm, hax and hvf */
429 /* Used to keep track of an outstanding cpu throttle thread for migration
432 bool throttle_thread_scheduled
;
435 * Sleep throttle_us_per_full microseconds once dirty ring is full
436 * if dirty page rate limit is enabled.
438 int64_t throttle_us_per_full
;
440 bool ignore_memory_transaction_failures
;
442 /* Used for user-only emulation of prctl(PR_SET_UNALIGN). */
443 bool prctl_unalign_sigbus
;
445 struct hax_vcpu_state
*hax_vcpu
;
447 struct hvf_vcpu_state
*hvf
;
449 /* track IOMMUs whose translations we've cached in the TCG TLB */
450 GArray
*iommu_notifiers
;
453 typedef QTAILQ_HEAD(CPUTailQ
, CPUState
) CPUTailQ
;
454 extern CPUTailQ cpus
;
456 #define first_cpu QTAILQ_FIRST_RCU(&cpus)
457 #define CPU_NEXT(cpu) QTAILQ_NEXT_RCU(cpu, node)
458 #define CPU_FOREACH(cpu) QTAILQ_FOREACH_RCU(cpu, &cpus, node)
459 #define CPU_FOREACH_SAFE(cpu, next_cpu) \
460 QTAILQ_FOREACH_SAFE_RCU(cpu, &cpus, node, next_cpu)
462 extern __thread CPUState
*current_cpu
;
465 * qemu_tcg_mttcg_enabled:
466 * Check whether we are running MultiThread TCG or not.
468 * Returns: %true if we are in MTTCG mode %false otherwise.
470 extern bool mttcg_enabled
;
471 #define qemu_tcg_mttcg_enabled() (mttcg_enabled)
474 * cpu_paging_enabled:
475 * @cpu: The CPU whose state is to be inspected.
477 * Returns: %true if paging is enabled, %false otherwise.
479 bool cpu_paging_enabled(const CPUState
*cpu
);
482 * cpu_get_memory_mapping:
483 * @cpu: The CPU whose memory mappings are to be obtained.
484 * @list: Where to write the memory mappings to.
485 * @errp: Pointer for reporting an #Error.
487 void cpu_get_memory_mapping(CPUState
*cpu
, MemoryMappingList
*list
,
490 #if !defined(CONFIG_USER_ONLY)
493 * cpu_write_elf64_note:
494 * @f: pointer to a function that writes memory to a file
495 * @cpu: The CPU whose memory is to be dumped
496 * @cpuid: ID number of the CPU
497 * @opaque: pointer to the CPUState struct
499 int cpu_write_elf64_note(WriteCoreDumpFunction f
, CPUState
*cpu
,
500 int cpuid
, void *opaque
);
503 * cpu_write_elf64_qemunote:
504 * @f: pointer to a function that writes memory to a file
505 * @cpu: The CPU whose memory is to be dumped
506 * @cpuid: ID number of the CPU
507 * @opaque: pointer to the CPUState struct
509 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f
, CPUState
*cpu
,
513 * cpu_write_elf32_note:
514 * @f: pointer to a function that writes memory to a file
515 * @cpu: The CPU whose memory is to be dumped
516 * @cpuid: ID number of the CPU
517 * @opaque: pointer to the CPUState struct
519 int cpu_write_elf32_note(WriteCoreDumpFunction f
, CPUState
*cpu
,
520 int cpuid
, void *opaque
);
523 * cpu_write_elf32_qemunote:
524 * @f: pointer to a function that writes memory to a file
525 * @cpu: The CPU whose memory is to be dumped
526 * @cpuid: ID number of the CPU
527 * @opaque: pointer to the CPUState struct
529 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f
, CPUState
*cpu
,
533 * cpu_get_crash_info:
534 * @cpu: The CPU to get crash information for
536 * Gets the previously saved crash information.
537 * Caller is responsible for freeing the data.
539 GuestPanicInformation
*cpu_get_crash_info(CPUState
*cpu
);
541 #endif /* !CONFIG_USER_ONLY */
546 * @CPU_DUMP_FPU: dump FPU register state, not just integer
547 * @CPU_DUMP_CCOP: dump info about TCG QEMU's condition code optimization state
550 CPU_DUMP_CODE
= 0x00010000,
551 CPU_DUMP_FPU
= 0x00020000,
552 CPU_DUMP_CCOP
= 0x00040000,
557 * @cpu: The CPU whose state is to be dumped.
558 * @f: If non-null, dump to this stream, else to current print sink.
562 void cpu_dump_state(CPUState
*cpu
, FILE *f
, int flags
);
564 #ifndef CONFIG_USER_ONLY
566 * cpu_get_phys_page_attrs_debug:
567 * @cpu: The CPU to obtain the physical page address for.
568 * @addr: The virtual address.
569 * @attrs: Updated on return with the memory transaction attributes to use
572 * Obtains the physical page corresponding to a virtual one, together
573 * with the corresponding memory transaction attributes to use for the access.
574 * Use it only for debugging because no protection checks are done.
576 * Returns: Corresponding physical page address or -1 if no page found.
578 hwaddr
cpu_get_phys_page_attrs_debug(CPUState
*cpu
, vaddr addr
,
582 * cpu_get_phys_page_debug:
583 * @cpu: The CPU to obtain the physical page address for.
584 * @addr: The virtual address.
586 * Obtains the physical page corresponding to a virtual one.
587 * Use it only for debugging because no protection checks are done.
589 * Returns: Corresponding physical page address or -1 if no page found.
591 hwaddr
cpu_get_phys_page_debug(CPUState
*cpu
, vaddr addr
);
593 /** cpu_asidx_from_attrs:
595 * @attrs: memory transaction attributes
597 * Returns the address space index specifying the CPU AddressSpace
598 * to use for a memory access with the given transaction attributes.
600 int cpu_asidx_from_attrs(CPUState
*cpu
, MemTxAttrs attrs
);
603 * cpu_virtio_is_big_endian:
606 * Returns %true if a CPU which supports runtime configurable endianness
607 * is currently big-endian.
609 bool cpu_virtio_is_big_endian(CPUState
*cpu
);
611 #endif /* CONFIG_USER_ONLY */
615 * @cpu: The CPU to be added to the list of CPUs.
617 void cpu_list_add(CPUState
*cpu
);
621 * @cpu: The CPU to be removed from the list of CPUs.
623 void cpu_list_remove(CPUState
*cpu
);
627 * @cpu: The CPU whose state is to be reset.
629 void cpu_reset(CPUState
*cpu
);
633 * @typename: The CPU base type.
634 * @cpu_model: The model string without any parameters.
636 * Looks up a CPU #ObjectClass matching name @cpu_model.
638 * Returns: A #CPUClass or %NULL if not matching class is found.
640 ObjectClass
*cpu_class_by_name(const char *typename
, const char *cpu_model
);
644 * @typename: The CPU type.
646 * Instantiates a CPU and realizes the CPU.
648 * Returns: A #CPUState or %NULL if an error occurred.
650 CPUState
*cpu_create(const char *typename
);
654 * @cpu_option: The -cpu option including optional parameters.
656 * processes optional parameters and registers them as global properties
658 * Returns: type of CPU to create or prints error and terminates process
659 * if an error occurred.
661 const char *parse_cpu_option(const char *cpu_option
);
665 * @cpu: The vCPU to check.
667 * Checks whether the CPU has work to do.
669 * Returns: %true if the CPU has work, %false otherwise.
671 static inline bool cpu_has_work(CPUState
*cpu
)
673 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
675 g_assert(cc
->has_work
);
676 return cc
->has_work(cpu
);
681 * @cpu: The vCPU to check against.
683 * Checks whether the caller is executing on the vCPU thread.
685 * Returns: %true if called from @cpu's thread, %false otherwise.
687 bool qemu_cpu_is_self(CPUState
*cpu
);
691 * @cpu: The vCPU to kick.
693 * Kicks @cpu's thread.
695 void qemu_cpu_kick(CPUState
*cpu
);
699 * @cpu: The CPU to check.
701 * Checks whether the CPU is stopped.
703 * Returns: %true if run state is not running or if artificially stopped;
706 bool cpu_is_stopped(CPUState
*cpu
);
710 * @cpu: The vCPU to run on.
711 * @func: The function to be executed.
712 * @data: Data to pass to the function.
713 * @mutex: Mutex to release while waiting for @func to run.
715 * Used internally in the implementation of run_on_cpu.
717 void do_run_on_cpu(CPUState
*cpu
, run_on_cpu_func func
, run_on_cpu_data data
,
722 * @cpu: The vCPU to run on.
723 * @func: The function to be executed.
724 * @data: Data to pass to the function.
726 * Schedules the function @func for execution on the vCPU @cpu.
728 void run_on_cpu(CPUState
*cpu
, run_on_cpu_func func
, run_on_cpu_data data
);
732 * @cpu: The vCPU to run on.
733 * @func: The function to be executed.
734 * @data: Data to pass to the function.
736 * Schedules the function @func for execution on the vCPU @cpu asynchronously.
738 void async_run_on_cpu(CPUState
*cpu
, run_on_cpu_func func
, run_on_cpu_data data
);
741 * async_safe_run_on_cpu:
742 * @cpu: The vCPU to run on.
743 * @func: The function to be executed.
744 * @data: Data to pass to the function.
746 * Schedules the function @func for execution on the vCPU @cpu asynchronously,
747 * while all other vCPUs are sleeping.
749 * Unlike run_on_cpu and async_run_on_cpu, the function is run outside the
752 void async_safe_run_on_cpu(CPUState
*cpu
, run_on_cpu_func func
, run_on_cpu_data data
);
755 * cpu_in_exclusive_context()
756 * @cpu: The vCPU to check
758 * Returns true if @cpu is an exclusive context, for example running
759 * something which has previously been queued via async_safe_run_on_cpu().
761 static inline bool cpu_in_exclusive_context(const CPUState
*cpu
)
763 return cpu
->exclusive_context_count
;
768 * @index: The CPUState@cpu_index value of the CPU to obtain.
770 * Gets a CPU matching @index.
772 * Returns: The CPU or %NULL if there is no matching CPU.
774 CPUState
*qemu_get_cpu(int index
);
778 * @id: Guest-exposed CPU ID to lookup.
780 * Search for CPU with specified ID.
782 * Returns: %true - CPU is found, %false - CPU isn't found.
784 bool cpu_exists(int64_t id
);
788 * @id: Guest-exposed CPU ID of the CPU to obtain.
790 * Get a CPU with matching @id.
792 * Returns: The CPU or %NULL if there is no matching CPU.
794 CPUState
*cpu_by_arch_id(int64_t id
);
798 * @cpu: The CPU to set an interrupt on.
799 * @mask: The interrupts to set.
801 * Invokes the interrupt handler.
804 void cpu_interrupt(CPUState
*cpu
, int mask
);
808 * @cpu: The CPU to set the program counter for.
809 * @addr: Program counter value.
811 * Sets the program counter for a CPU.
813 static inline void cpu_set_pc(CPUState
*cpu
, vaddr addr
)
815 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
817 cc
->set_pc(cpu
, addr
);
821 * cpu_reset_interrupt:
822 * @cpu: The CPU to clear the interrupt on.
823 * @mask: The interrupt mask to clear.
825 * Resets interrupts on the vCPU @cpu.
827 void cpu_reset_interrupt(CPUState
*cpu
, int mask
);
831 * @cpu: The CPU to exit.
833 * Requests the CPU @cpu to exit execution.
835 void cpu_exit(CPUState
*cpu
);
839 * @cpu: The CPU to resume.
841 * Resumes CPU, i.e. puts CPU into runnable state.
843 void cpu_resume(CPUState
*cpu
);
847 * @cpu: The CPU to remove.
849 * Requests the CPU to be removed and waits till it is removed.
851 void cpu_remove_sync(CPUState
*cpu
);
854 * process_queued_cpu_work() - process all items on CPU work queue
855 * @cpu: The CPU which work queue to process.
857 void process_queued_cpu_work(CPUState
*cpu
);
861 * @cpu: The CPU for the current thread.
863 * Record that a CPU has started execution and can be interrupted with
866 void cpu_exec_start(CPUState
*cpu
);
870 * @cpu: The CPU for the current thread.
872 * Record that a CPU has stopped execution and exclusive sections
873 * can be executed without interrupting it.
875 void cpu_exec_end(CPUState
*cpu
);
880 * Wait for a concurrent exclusive section to end, and then start
881 * a section of work that is run while other CPUs are not running
882 * between cpu_exec_start and cpu_exec_end. CPUs that are running
883 * cpu_exec are exited immediately. CPUs that call cpu_exec_start
884 * during the exclusive section go to sleep until this CPU calls
887 void start_exclusive(void);
892 * Concludes an exclusive execution section started by start_exclusive.
894 void end_exclusive(void);
898 * @cpu: The vCPU to initialize.
900 * Initializes a vCPU.
902 void qemu_init_vcpu(CPUState
*cpu
);
904 #define SSTEP_ENABLE 0x1 /* Enable simulated HW single stepping */
905 #define SSTEP_NOIRQ 0x2 /* Do not use IRQ while single stepping */
906 #define SSTEP_NOTIMER 0x4 /* Do not Timers while single stepping */
910 * @cpu: CPU to the flags for.
911 * @enabled: Flags to enable.
913 * Enables or disables single-stepping for @cpu.
915 void cpu_single_step(CPUState
*cpu
, int enabled
);
917 /* Breakpoint/watchpoint flags */
918 #define BP_MEM_READ 0x01
919 #define BP_MEM_WRITE 0x02
920 #define BP_MEM_ACCESS (BP_MEM_READ | BP_MEM_WRITE)
921 #define BP_STOP_BEFORE_ACCESS 0x04
922 /* 0x08 currently unused */
925 #define BP_ANY (BP_GDB | BP_CPU)
926 #define BP_HIT_SHIFT 6
927 #define BP_WATCHPOINT_HIT_READ (BP_MEM_READ << BP_HIT_SHIFT)
928 #define BP_WATCHPOINT_HIT_WRITE (BP_MEM_WRITE << BP_HIT_SHIFT)
929 #define BP_WATCHPOINT_HIT (BP_MEM_ACCESS << BP_HIT_SHIFT)
931 int cpu_breakpoint_insert(CPUState
*cpu
, vaddr pc
, int flags
,
932 CPUBreakpoint
**breakpoint
);
933 int cpu_breakpoint_remove(CPUState
*cpu
, vaddr pc
, int flags
);
934 void cpu_breakpoint_remove_by_ref(CPUState
*cpu
, CPUBreakpoint
*breakpoint
);
935 void cpu_breakpoint_remove_all(CPUState
*cpu
, int mask
);
937 /* Return true if PC matches an installed breakpoint. */
938 static inline bool cpu_breakpoint_test(CPUState
*cpu
, vaddr pc
, int mask
)
942 if (unlikely(!QTAILQ_EMPTY(&cpu
->breakpoints
))) {
943 QTAILQ_FOREACH(bp
, &cpu
->breakpoints
, entry
) {
944 if (bp
->pc
== pc
&& (bp
->flags
& mask
)) {
952 #if !defined(CONFIG_TCG) || defined(CONFIG_USER_ONLY)
953 static inline int cpu_watchpoint_insert(CPUState
*cpu
, vaddr addr
, vaddr len
,
954 int flags
, CPUWatchpoint
**watchpoint
)
959 static inline int cpu_watchpoint_remove(CPUState
*cpu
, vaddr addr
,
960 vaddr len
, int flags
)
965 static inline void cpu_watchpoint_remove_by_ref(CPUState
*cpu
,
970 static inline void cpu_watchpoint_remove_all(CPUState
*cpu
, int mask
)
974 static inline void cpu_check_watchpoint(CPUState
*cpu
, vaddr addr
, vaddr len
,
975 MemTxAttrs atr
, int fl
, uintptr_t ra
)
979 static inline int cpu_watchpoint_address_matches(CPUState
*cpu
,
980 vaddr addr
, vaddr len
)
985 int cpu_watchpoint_insert(CPUState
*cpu
, vaddr addr
, vaddr len
,
986 int flags
, CPUWatchpoint
**watchpoint
);
987 int cpu_watchpoint_remove(CPUState
*cpu
, vaddr addr
,
988 vaddr len
, int flags
);
989 void cpu_watchpoint_remove_by_ref(CPUState
*cpu
, CPUWatchpoint
*watchpoint
);
990 void cpu_watchpoint_remove_all(CPUState
*cpu
, int mask
);
993 * cpu_check_watchpoint:
995 * @addr: guest virtual address
996 * @len: access length
997 * @attrs: memory access attributes
998 * @flags: watchpoint access type
999 * @ra: unwind return address
1001 * Check for a watchpoint hit in [addr, addr+len) of the type
1002 * specified by @flags. Exit via exception with a hit.
1004 void cpu_check_watchpoint(CPUState
*cpu
, vaddr addr
, vaddr len
,
1005 MemTxAttrs attrs
, int flags
, uintptr_t ra
);
1008 * cpu_watchpoint_address_matches:
1010 * @addr: guest virtual address
1011 * @len: access length
1013 * Return the watchpoint flags that apply to [addr, addr+len).
1014 * If no watchpoint is registered for the range, the result is 0.
1016 int cpu_watchpoint_address_matches(CPUState
*cpu
, vaddr addr
, vaddr len
);
1020 * cpu_get_address_space:
1021 * @cpu: CPU to get address space from
1022 * @asidx: index identifying which address space to get
1024 * Return the requested address space of this CPU. @asidx
1025 * specifies which address space to read.
1027 AddressSpace
*cpu_get_address_space(CPUState
*cpu
, int asidx
);
1029 G_NORETURN
void cpu_abort(CPUState
*cpu
, const char *fmt
, ...)
1030 G_GNUC_PRINTF(2, 3);
1032 /* $(top_srcdir)/cpu.c */
1033 void cpu_class_init_props(DeviceClass
*dc
);
1034 void cpu_exec_initfn(CPUState
*cpu
);
1035 void cpu_exec_realizefn(CPUState
*cpu
, Error
**errp
);
1036 void cpu_exec_unrealizefn(CPUState
*cpu
);
1039 * target_words_bigendian:
1040 * Returns true if the (default) endianness of the target is big endian,
1041 * false otherwise. Note that in target-specific code, you can use
1042 * TARGET_BIG_ENDIAN directly instead. On the other hand, common
1043 * code should normally never need to know about the endianness of the
1044 * target, so please do *not* use this function unless you know very well
1045 * what you are doing!
1047 bool target_words_bigendian(void);
1049 void page_size_init(void);
1053 #ifdef CONFIG_SOFTMMU
1055 extern const VMStateDescription vmstate_cpu_common
;
1057 #define VMSTATE_CPU() { \
1058 .name = "parent_obj", \
1059 .size = sizeof(CPUState), \
1060 .vmsd = &vmstate_cpu_common, \
1061 .flags = VMS_STRUCT, \
1064 #endif /* CONFIG_SOFTMMU */
1066 #endif /* NEED_CPU_H */
1068 #define UNASSIGNED_CPU_INDEX -1
1069 #define UNASSIGNED_CLUSTER_INDEX -1