include/accel/tcg/cpu-loop.h

/*
 * QEMU TCG CPU loop API
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
#ifndef ACCEL_TCG_CPU_LOOP_COMMON_H
#define ACCEL_TCG_CPU_LOOP_COMMON_H

#ifndef CONFIG_TCG
#error Can only include this header with TCG
#endif

/**
 * cpu_exec:
 * @cpu: the cpu context
 *
 * Returns one of the EXCP_* definitions (see "exec/cpu-common.h").
 */
int cpu_exec(CPUState *cpu);

void cpu_exec_step_atomic(CPUState *cpu);

/**
 * cpu_unwind_state_data:
 * @cpu: the cpu context
 * @host_pc: the host pc within the translation
 * @data: output data
 *
 * Attempt to load the unwind state for a host pc occurring in
 * translated code.  If @host_pc is not in translated code, the
 * function returns false; otherwise @data is loaded.
 * This is the same unwind info as given to restore_state_to_opc.
 */
bool cpu_unwind_state_data(CPUState *cpu, uintptr_t host_pc, uint64_t *data);

/**
 * cpu_restore_state:
 * @cpu: the cpu context
 * @host_pc: the host pc within the translation
 * @return: true if state was restored, false otherwise
 *
 * Attempt to restore the state for a fault occurring in translated
 * code. If @host_pc is not in translated code no state is
 * restored and the function returns false.
 */
bool cpu_restore_state(CPUState *cpu, uintptr_t host_pc);

/**
 * cpu_loop_exit_noexc:
 * @cpu: the cpu context
 *
 * Exit the current TB, but without causing any exception to be raised.
 */
G_NORETURN void cpu_loop_exit_noexc(CPUState *cpu);

/**
 * cpu_loop_exit_restore:
 * @cpu: the cpu context
 * @host_pc: the host pc within the translation
 *
 * Attempt to restore the state for a fault occurring in translated
 * code. If @host_pc is not in translated code no state is
 * restored. Finally, exit the current TB.
 */
G_NORETURN void cpu_loop_exit_restore(CPUState *cpu, uintptr_t host_pc);
G_NORETURN void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t host_pc);

/**
 * cpu_loop_exit:
 * @cpu: the cpu context
 *
 * Exit the current TB.
 */
G_NORETURN void cpu_loop_exit(CPUState *cpu);

#endif