bool tcg_cpu_exec(void)
{
int ret = 0;
if (next_cpu == NULL)
next_cpu = first_cpu;
for (; next_cpu != NULL; next_cpu = next_cpu->next_cpu) {
CPUState *env = cur_cpu = next_cpu;
qemu_clock_enable(vm_clock,
(cur_cpu->singlestep_enabled & SSTEP_NOTIMER) == 0);
if (qemu_alarm_pending())
break;
if (cpu_can_run(env))
ret = qemu_cpu_exec(env);
else if (env->stop)
break;
if (ret == EXCP_DEBUG) {
gdb_set_stop_cpu(env);
debug_requested = EXCP_DEBUG;
break;
}
}
return tcg_has_work();
}
static void *kvm_cpu_thread_fn(void *arg)
{
CPUState *env = arg;
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_self(env->thread);
if (kvm_enabled())
kvm_init_vcpu(env);
kvm_init_ipi(env);
/* signal CPU creation */
env->created = 1;
qemu_cond_signal(&qemu_cpu_cond);
/* and wait for machine initialization */
while (!qemu_system_ready)
qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
while (1) {
if (cpu_can_run(env))
qemu_cpu_exec(env);
qemu_kvm_wait_io_event(env);
}
return NULL;
}
bool cpu_exec_all (void)
{
static int i = 0;
if (next_cpu == NULL) {
next_cpu = first_cpu;
i = 0;
}
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu, i++) {
CPUState *env = next_cpu;
rr_run = env->kvm_run;
cpu_number = i;
qemu_clock_enable(vm_clock,
(env->singlestep_enabled & SSTEP_NOTIMER) == 0);
if (qemu_alarm_pending())
break;
if (cpu_can_run(env)) {
if (qemu_cpu_exec(env) == EXCP_DEBUG) {
break;
}
} else if (env->stop) {
break;
}
}
exit_request = 0;
return any_cpu_has_work();
}
bool cpu_exec_all(void)
{
if (next_cpu == NULL)
next_cpu = first_cpu;
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) {
CPUState *env = next_cpu;
qemu_clock_enable(vm_clock,
(env->singlestep_enabled & SSTEP_NOTIMER) == 0);
if (qemu_alarm_pending())
break;
if (cpu_can_run(env)) {
if (qemu_cpu_exec(env) == EXCP_DEBUG) {
break;
}
} else if (env->stop) {
#ifdef MARSS_QEMU
continue; /* Let other CPUS execute */
#else
break;
#endif
}
#ifdef MARSS_QEMU
if (in_simulation)
/* No need to run for other cpus */
break;
#endif
}
#ifdef MARSS_QEMU
if (!any_cpu_has_work()) {
/* All CPUs are paused, call ptl_simpoint reached
* to check if we need to switch to simulation or not */
ptl_simpoint_reached(0);
}
#endif
exit_request = 0;
return any_cpu_has_work();
}
void tcg_cpu_exec(void)
{
int ret = 0;
if (next_cpu == NULL)
next_cpu = first_cpu;
for (; next_cpu != NULL; next_cpu = next_cpu->next_cpu) {
CPUState *env = cur_cpu = next_cpu;
if (!vm_running)
break;
if (qemu_timer_alarm_pending()) {
break;
}
if (cpu_can_run(env))
ret = qemu_cpu_exec(env);
if (ret == EXCP_DEBUG) {
gdb_set_stop_cpu(env);
debug_requested = 1;
break;
}
}
}
