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Diffstat (limited to 'include/qom/cpu.h')
-rw-r--r-- | include/qom/cpu.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/include/qom/cpu.h b/include/qom/cpu.h new file mode 100644 index 0000000..3e9fc3a --- /dev/null +++ b/include/qom/cpu.h @@ -0,0 +1,151 @@ +/* + * QEMU CPU model + * + * Copyright (c) 2012 SUSE LINUX Products GmbH + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see + * <http://www.gnu.org/licenses/gpl-2.0.html> + */ +#ifndef QEMU_CPU_H +#define QEMU_CPU_H + +#include "qom/object.h" +#include "qemu/thread.h" + +/** + * SECTION:cpu + * @section_id: QEMU-cpu + * @title: CPU Class + * @short_description: Base class for all CPUs + */ + +#define TYPE_CPU "cpu" + +#define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU) +#define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU) +#define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU) + +typedef struct CPUState CPUState; + +/** + * CPUClass: + * @reset: Callback to reset the #CPUState to its initial state. + * + * Represents a CPU family or model. + */ +typedef struct CPUClass { + /*< private >*/ + ObjectClass parent_class; + /*< public >*/ + + void (*reset)(CPUState *cpu); +} CPUClass; + +struct KVMState; +struct kvm_run; + +/** + * CPUState: + * @created: Indicates whether the CPU thread has been successfully created. + * @stop: Indicates a pending stop request. + * @stopped: Indicates the CPU has been artificially stopped. + * @kvm_fd: vCPU file descriptor for KVM. + * + * State of one CPU core or thread. + */ +struct CPUState { + /*< private >*/ + Object parent_obj; + /*< public >*/ + + struct QemuThread *thread; +#ifdef _WIN32 + HANDLE hThread; +#endif + int thread_id; + struct QemuCond *halt_cond; + struct qemu_work_item *queued_work_first, *queued_work_last; + bool thread_kicked; + bool created; + bool stop; + bool stopped; + +#if !defined(CONFIG_USER_ONLY) + int kvm_fd; + bool kvm_vcpu_dirty; +#endif + struct KVMState *kvm_state; + struct kvm_run *kvm_run; + + /* TODO Move common fields from CPUArchState here. */ +}; + + +/** + * cpu_reset: + * @cpu: The CPU whose state is to be reset. + */ +void cpu_reset(CPUState *cpu); + +/** + * qemu_cpu_has_work: + * @cpu: The vCPU to check. + * + * Checks whether the CPU has work to do. + * + * Returns: %true if the CPU has work, %false otherwise. + */ +bool qemu_cpu_has_work(CPUState *cpu); + +/** + * qemu_cpu_is_self: + * @cpu: The vCPU to check against. + * + * Checks whether the caller is executing on the vCPU thread. + * + * Returns: %true if called from @cpu's thread, %false otherwise. + */ +bool qemu_cpu_is_self(CPUState *cpu); + +/** + * qemu_cpu_kick: + * @cpu: The vCPU to kick. + * + * Kicks @cpu's thread. + */ +void qemu_cpu_kick(CPUState *cpu); + +/** + * cpu_is_stopped: + * @cpu: The CPU to check. + * + * Checks whether the CPU is stopped. + * + * Returns: %true if run state is not running or if artificially stopped; + * %false otherwise. + */ +bool cpu_is_stopped(CPUState *cpu); + +/** + * run_on_cpu: + * @cpu: The vCPU to run on. + * @func: The function to be executed. + * @data: Data to pass to the function. + * + * Schedules the function @func for execution on the vCPU @cpu. + */ +void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data); + + +#endif |