Move it to qom/cpu.c to avoid build failures depending on include order of cpu-qom.h and exec/cpu-all.h. Change opaques of various ..._irq_handler() functions to the appropriate CPU type to facilitate using cpu_reset_interrupt(). Fix Coding Style issues while at it (missing braces, indentation). Signed-off-by: Andreas Färber <afaerber@suse.de>
235 lines
6 KiB
C
235 lines
6 KiB
C
/*
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* QEMU CPU model
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*
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*/
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#ifndef QEMU_CPU_H
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#define QEMU_CPU_H
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#include <signal.h>
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#include "hw/qdev-core.h"
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#include "qemu/thread.h"
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/**
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* SECTION:cpu
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* @section_id: QEMU-cpu
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* @title: CPU Class
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* @short_description: Base class for all CPUs
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*/
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#define TYPE_CPU "cpu"
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#define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU)
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#define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU)
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#define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU)
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typedef struct CPUState CPUState;
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/**
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* CPUClass:
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* @class_by_name: Callback to map -cpu command line model name to an
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* instantiatable CPU type.
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* @reset: Callback to reset the #CPUState to its initial state.
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* @vmsd: State description for migration.
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*
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* Represents a CPU family or model.
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*/
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typedef struct CPUClass {
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/*< private >*/
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DeviceClass parent_class;
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/*< public >*/
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ObjectClass *(*class_by_name)(const char *cpu_model);
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void (*reset)(CPUState *cpu);
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const struct VMStateDescription *vmsd;
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} CPUClass;
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struct KVMState;
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struct kvm_run;
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/**
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* CPUState:
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* @cpu_index: CPU index (informative).
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* @nr_cores: Number of cores within this CPU package.
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* @nr_threads: Number of threads within this CPU.
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* @numa_node: NUMA node this CPU is belonging to.
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* @host_tid: Host thread ID.
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* @running: #true if CPU is currently running (usermode).
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* @created: Indicates whether the CPU thread has been successfully created.
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* @interrupt_request: Indicates a pending interrupt request.
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* @halted: Nonzero if the CPU is in suspended state.
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* @stop: Indicates a pending stop request.
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* @stopped: Indicates the CPU has been artificially stopped.
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* @tcg_exit_req: Set to force TCG to stop executing linked TBs for this
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* CPU and return to its top level loop.
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* @env_ptr: Pointer to subclass-specific CPUArchState field.
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* @current_tb: Currently executing TB.
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* @kvm_fd: vCPU file descriptor for KVM.
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*
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* State of one CPU core or thread.
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*/
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struct CPUState {
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/*< private >*/
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DeviceState parent_obj;
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/*< public >*/
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int nr_cores;
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int nr_threads;
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int numa_node;
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struct QemuThread *thread;
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#ifdef _WIN32
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HANDLE hThread;
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#endif
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int thread_id;
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uint32_t host_tid;
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bool running;
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struct QemuCond *halt_cond;
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struct qemu_work_item *queued_work_first, *queued_work_last;
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bool thread_kicked;
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bool created;
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bool stop;
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bool stopped;
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volatile sig_atomic_t exit_request;
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volatile sig_atomic_t tcg_exit_req;
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uint32_t interrupt_request;
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void *env_ptr; /* CPUArchState */
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struct TranslationBlock *current_tb;
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int kvm_fd;
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bool kvm_vcpu_dirty;
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struct KVMState *kvm_state;
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struct kvm_run *kvm_run;
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/* TODO Move common fields from CPUArchState here. */
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int cpu_index; /* used by alpha TCG */
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uint32_t halted; /* used by alpha, cris, ppc TCG */
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};
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/**
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* cpu_reset:
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* @cpu: The CPU whose state is to be reset.
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*/
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void cpu_reset(CPUState *cpu);
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/**
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* cpu_class_by_name:
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* @typename: The CPU base type.
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* @cpu_model: The model string without any parameters.
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*
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* Looks up a CPU #ObjectClass matching name @cpu_model.
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*
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* Returns: A #CPUClass or %NULL if not matching class is found.
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*/
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ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
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/**
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* cpu_class_set_vmsd:
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* @cc: CPU class
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* @value: Value to set. Unused for %CONFIG_USER_ONLY.
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*
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* Sets #VMStateDescription for @cc.
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*
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* The @value argument is intentionally discarded for the non-softmmu targets
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* to avoid linker errors or excessive preprocessor usage. If this behavior
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* is undesired, you should assign #CPUState.vmsd directly instead.
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*/
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#ifndef CONFIG_USER_ONLY
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static inline void cpu_class_set_vmsd(CPUClass *cc,
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const struct VMStateDescription *value)
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{
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cc->vmsd = value;
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}
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#else
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#define cpu_class_set_vmsd(cc, value) ((cc)->vmsd = NULL)
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#endif
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/**
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* qemu_cpu_has_work:
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* @cpu: The vCPU to check.
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*
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* Checks whether the CPU has work to do.
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*
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* Returns: %true if the CPU has work, %false otherwise.
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*/
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bool qemu_cpu_has_work(CPUState *cpu);
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/**
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* qemu_cpu_is_self:
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* @cpu: The vCPU to check against.
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*
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* Checks whether the caller is executing on the vCPU thread.
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*
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* Returns: %true if called from @cpu's thread, %false otherwise.
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*/
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bool qemu_cpu_is_self(CPUState *cpu);
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/**
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* qemu_cpu_kick:
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* @cpu: The vCPU to kick.
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*
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* Kicks @cpu's thread.
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*/
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void qemu_cpu_kick(CPUState *cpu);
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/**
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* cpu_is_stopped:
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* @cpu: The CPU to check.
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*
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* Checks whether the CPU is stopped.
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*
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* Returns: %true if run state is not running or if artificially stopped;
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* %false otherwise.
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*/
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bool cpu_is_stopped(CPUState *cpu);
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/**
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* run_on_cpu:
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* @cpu: The vCPU to run on.
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* @func: The function to be executed.
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* @data: Data to pass to the function.
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*
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* Schedules the function @func for execution on the vCPU @cpu.
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*/
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void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data);
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/**
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* qemu_get_cpu:
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* @index: The CPUState@cpu_index value of the CPU to obtain.
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*
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* Gets a CPU matching @index.
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*
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* Returns: The CPU or %NULL if there is no matching CPU.
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*/
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CPUState *qemu_get_cpu(int index);
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/**
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* cpu_reset_interrupt:
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* @cpu: The CPU to clear the interrupt on.
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* @mask: The interrupt mask to clear.
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*
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* Resets interrupts on the vCPU @cpu.
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*/
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void cpu_reset_interrupt(CPUState *cpu, int mask);
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#endif
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