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1dfb4dd993
qemu/cpus.c
Luiz Capitulino 1dfb4dd993 Replace the VMSTOP macros with a proper state type 
Today, when notifying a VM state change with vm_state_notify(),
we pass a VMSTOP macro as the 'reason' argument. This is not ideal
because the VMSTOP macros tell why qemu stopped and not exactly
what the current VM state is.

One example to demonstrate this problem is that vm_start() calls
vm_state_notify() with reason=0, which turns out to be VMSTOP_USER.

This commit fixes that by replacing the VMSTOP macros with a proper
state type called RunState.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15 16:39:32 -03:00

1028 lines
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/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* Needed early for CONFIG_BSD etc. */
#include "config-host.h"
#include "monitor.h"
#include "sysemu.h"
#include "gdbstub.h"
#include "dma.h"
#include "kvm.h"
#include "qemu-thread.h"
#include "cpus.h"
#ifndef _WIN32
#include "compatfd.h"
#endif
#ifdef SIGRTMIN
#define SIG_IPI (SIGRTMIN+4)
#else
#define SIG_IPI SIGUSR1
#endif
#ifdef CONFIG_LINUX
#include <sys/prctl.h>
#ifndef PR_MCE_KILL
#define PR_MCE_KILL 33
#endif
#ifndef PR_MCE_KILL_SET
#define PR_MCE_KILL_SET 1
#endif
#ifndef PR_MCE_KILL_EARLY
#define PR_MCE_KILL_EARLY 1
#endif
#endif /* CONFIG_LINUX */
static CPUState *next_cpu;
/***********************************************************/
void hw_error(const char *fmt, ...)
{
va_list ap;
CPUState *env;
va_start(ap, fmt);
fprintf(stderr, "qemu: hardware error: ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
for(env = first_cpu; env != NULL; env = env->next_cpu) {
fprintf(stderr, "CPU #%d:\n", env->cpu_index);
#ifdef TARGET_I386
cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU);
#else
cpu_dump_state(env, stderr, fprintf, 0);
#endif
}
va_end(ap);
abort();
}
void cpu_synchronize_all_states(void)
{
CPUState *cpu;
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
cpu_synchronize_state(cpu);
}
}
void cpu_synchronize_all_post_reset(void)
{
CPUState *cpu;
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
cpu_synchronize_post_reset(cpu);
}
}
void cpu_synchronize_all_post_init(void)
{
CPUState *cpu;
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
cpu_synchronize_post_init(cpu);
}
}
int cpu_is_stopped(CPUState *env)
{
return !vm_running || env->stopped;
}
static void do_vm_stop(RunState state)
{
if (vm_running) {
cpu_disable_ticks();
vm_running = 0;
pause_all_vcpus();
vm_state_notify(0, state);
qemu_aio_flush();
bdrv_flush_all();
monitor_protocol_event(QEVENT_STOP, NULL);
}
}
static int cpu_can_run(CPUState *env)
{
if (env->stop) {
return 0;
}
if (env->stopped || !vm_running) {
return 0;
}
return 1;
}
static bool cpu_thread_is_idle(CPUState *env)
{
if (env->stop || env->queued_work_first) {
return false;
}
if (env->stopped || !vm_running) {
return true;
}
if (!env->halted || qemu_cpu_has_work(env) ||
(kvm_enabled() && kvm_irqchip_in_kernel())) {
return false;
}
return true;
}
bool all_cpu_threads_idle(void)
{
CPUState *env;
for (env = first_cpu; env != NULL; env = env->next_cpu) {
if (!cpu_thread_is_idle(env)) {
return false;
}
}
return true;
}
static void cpu_handle_guest_debug(CPUState *env)
{
gdb_set_stop_cpu(env);
qemu_system_debug_request();
env->stopped = 1;
}
static void cpu_signal(int sig)
{
if (cpu_single_env) {
cpu_exit(cpu_single_env);
}
exit_request = 1;
}
#ifdef CONFIG_LINUX
static void sigbus_reraise(void)
{
sigset_t set;
struct sigaction action;
memset(&action, 0, sizeof(action));
action.sa_handler = SIG_DFL;
if (!sigaction(SIGBUS, &action, NULL)) {
raise(SIGBUS);
sigemptyset(&set);
sigaddset(&set, SIGBUS);
sigprocmask(SIG_UNBLOCK, &set, NULL);
}
perror("Failed to re-raise SIGBUS!\n");
abort();
}
static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo,
void *ctx)
{
if (kvm_on_sigbus(siginfo->ssi_code,
(void *)(intptr_t)siginfo->ssi_addr)) {
sigbus_reraise();
}
}
static void qemu_init_sigbus(void)
{
struct sigaction action;
memset(&action, 0, sizeof(action));
action.sa_flags = SA_SIGINFO;
action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler;
sigaction(SIGBUS, &action, NULL);
prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0);
}
static void qemu_kvm_eat_signals(CPUState *env)
{
struct timespec ts = { 0, 0 };
siginfo_t siginfo;
sigset_t waitset;
sigset_t chkset;
int r;
sigemptyset(&waitset);
sigaddset(&waitset, SIG_IPI);
sigaddset(&waitset, SIGBUS);
do {
r = sigtimedwait(&waitset, &siginfo, &ts);
if (r == -1 && !(errno == EAGAIN || errno == EINTR)) {
perror("sigtimedwait");
exit(1);
}
switch (r) {
case SIGBUS:
if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
sigbus_reraise();
}
break;
default:
break;
}
r = sigpending(&chkset);
if (r == -1) {
perror("sigpending");
exit(1);
}
} while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
}
#else /* !CONFIG_LINUX */
static void qemu_init_sigbus(void)
{
}
static void qemu_kvm_eat_signals(CPUState *env)
{
}
#endif /* !CONFIG_LINUX */
#ifndef _WIN32
static int io_thread_fd = -1;
static void qemu_event_increment(void)
{
/* Write 8 bytes to be compatible with eventfd. */
static const uint64_t val = 1;
ssize_t ret;
if (io_thread_fd == -1) {
return;
}
do {
ret = write(io_thread_fd, &val, sizeof(val));
} while (ret < 0 && errno == EINTR);
/* EAGAIN is fine, a read must be pending. */
if (ret < 0 && errno != EAGAIN) {
fprintf(stderr, "qemu_event_increment: write() failed: %s\n",
strerror(errno));
exit (1);
}
}
static void qemu_event_read(void *opaque)
{
int fd = (intptr_t)opaque;
ssize_t len;
char buffer[512];
/* Drain the notify pipe. For eventfd, only 8 bytes will be read. */
do {
len = read(fd, buffer, sizeof(buffer));
} while ((len == -1 && errno == EINTR) || len == sizeof(buffer));
}
static int qemu_event_init(void)
{
int err;
int fds[2];
err = qemu_eventfd(fds);
if (err == -1) {
return -errno;
}
err = fcntl_setfl(fds[0], O_NONBLOCK);
if (err < 0) {
goto fail;
}
err = fcntl_setfl(fds[1], O_NONBLOCK);
if (err < 0) {
goto fail;
}
qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL,
(void *)(intptr_t)fds[0]);
io_thread_fd = fds[1];
return 0;
fail:
close(fds[0]);
close(fds[1]);
return err;
}
static void dummy_signal(int sig)
{
}
/* If we have signalfd, we mask out the signals we want to handle and then
* use signalfd to listen for them. We rely on whatever the current signal
* handler is to dispatch the signals when we receive them.
*/
static void sigfd_handler(void *opaque)
{
int fd = (intptr_t)opaque;
struct qemu_signalfd_siginfo info;
struct sigaction action;
ssize_t len;
while (1) {
do {
len = read(fd, &info, sizeof(info));
} while (len == -1 && errno == EINTR);
if (len == -1 && errno == EAGAIN) {
break;
}
if (len != sizeof(info)) {
printf("read from sigfd returned %zd: %m\n", len);
return;
}
sigaction(info.ssi_signo, NULL, &action);
if ((action.sa_flags & SA_SIGINFO) && action.sa_sigaction) {
action.sa_sigaction(info.ssi_signo,
(siginfo_t *)&info, NULL);
} else if (action.sa_handler) {
action.sa_handler(info.ssi_signo);
}
}
}
static int qemu_signal_init(void)
{
int sigfd;
sigset_t set;
/* SIGUSR2 used by posix-aio-compat.c */
sigemptyset(&set);
sigaddset(&set, SIGUSR2);
pthread_sigmask(SIG_UNBLOCK, &set, NULL);
/*
* SIG_IPI must be blocked in the main thread and must not be caught
* by sigwait() in the signal thread. Otherwise, the cpu thread will
* not catch it reliably.
*/
sigemptyset(&set);
sigaddset(&set, SIG_IPI);
pthread_sigmask(SIG_BLOCK, &set, NULL);
sigemptyset(&set);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGBUS);
pthread_sigmask(SIG_BLOCK, &set, NULL);
sigfd = qemu_signalfd(&set);
if (sigfd == -1) {
fprintf(stderr, "failed to create signalfd\n");
return -errno;
}
fcntl_setfl(sigfd, O_NONBLOCK);
qemu_set_fd_handler2(sigfd, NULL, sigfd_handler, NULL,
(void *)(intptr_t)sigfd);
return 0;
}
static void qemu_kvm_init_cpu_signals(CPUState *env)
{
int r;
sigset_t set;
struct sigaction sigact;
memset(&sigact, 0, sizeof(sigact));
sigact.sa_handler = dummy_signal;
sigaction(SIG_IPI, &sigact, NULL);
pthread_sigmask(SIG_BLOCK, NULL, &set);
sigdelset(&set, SIG_IPI);
sigdelset(&set, SIGBUS);
r = kvm_set_signal_mask(env, &set);
if (r) {
fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
exit(1);
}
sigdelset(&set, SIG_IPI);
sigdelset(&set, SIGBUS);
r = kvm_set_signal_mask(env, &set);
if (r) {
fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
exit(1);
}
}
static void qemu_tcg_init_cpu_signals(void)
{
sigset_t set;
struct sigaction sigact;
memset(&sigact, 0, sizeof(sigact));
sigact.sa_handler = cpu_signal;
sigaction(SIG_IPI, &sigact, NULL);
sigemptyset(&set);
sigaddset(&set, SIG_IPI);
pthread_sigmask(SIG_UNBLOCK, &set, NULL);
}
#else /* _WIN32 */
HANDLE qemu_event_handle;
static void dummy_event_handler(void *opaque)
{
}
static int qemu_event_init(void)
{
qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
if (!qemu_event_handle) {
fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
return -1;
}
qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
return 0;
}
static void qemu_event_increment(void)
{
if (!SetEvent(qemu_event_handle)) {
fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
GetLastError());
exit (1);
}
}
static int qemu_signal_init(void)
{
return 0;
}
static void qemu_kvm_init_cpu_signals(CPUState *env)
{
abort();
}
static void qemu_tcg_init_cpu_signals(void)
{
}
#endif /* _WIN32 */
QemuMutex qemu_global_mutex;
static QemuCond qemu_io_proceeded_cond;
static bool iothread_requesting_mutex;
static QemuThread io_thread;
static QemuThread *tcg_cpu_thread;
static QemuCond *tcg_halt_cond;
/* cpu creation */
static QemuCond qemu_cpu_cond;
/* system init */
static QemuCond qemu_pause_cond;
static QemuCond qemu_work_cond;
int qemu_init_main_loop(void)
{
int ret;
qemu_init_sigbus();
ret = qemu_signal_init();
if (ret) {
return ret;
}
/* Note eventfd must be drained before signalfd handlers run */
ret = qemu_event_init();
if (ret) {
return ret;
}
qemu_cond_init(&qemu_cpu_cond);
qemu_cond_init(&qemu_pause_cond);
qemu_cond_init(&qemu_work_cond);
qemu_cond_init(&qemu_io_proceeded_cond);
qemu_mutex_init(&qemu_global_mutex);
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_get_self(&io_thread);
return 0;
}
void qemu_main_loop_start(void)
{
resume_all_vcpus();
}
void run_on_cpu(CPUState *env, void (*func)(void *data), void *data)
{
struct qemu_work_item wi;
if (qemu_cpu_is_self(env)) {
func(data);
return;
}
wi.func = func;
wi.data = data;
if (!env->queued_work_first) {
env->queued_work_first = &wi;
} else {
env->queued_work_last->next = &wi;
}
env->queued_work_last = &wi;
wi.next = NULL;
wi.done = false;
qemu_cpu_kick(env);
while (!wi.done) {
CPUState *self_env = cpu_single_env;
qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex);
cpu_single_env = self_env;
}
}
static void flush_queued_work(CPUState *env)
{
struct qemu_work_item *wi;
if (!env->queued_work_first) {
return;
}
while ((wi = env->queued_work_first)) {
env->queued_work_first = wi->next;
wi->func(wi->data);
wi->done = true;
}
env->queued_work_last = NULL;
qemu_cond_broadcast(&qemu_work_cond);
}
static void qemu_wait_io_event_common(CPUState *env)
{
if (env->stop) {
env->stop = 0;
env->stopped = 1;
qemu_cond_signal(&qemu_pause_cond);
}
flush_queued_work(env);
env->thread_kicked = false;
}
static void qemu_tcg_wait_io_event(void)
{
CPUState *env;
while (all_cpu_threads_idle()) {
/* Start accounting real time to the virtual clock if the CPUs
are idle. */
qemu_clock_warp(vm_clock);
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
}
while (iothread_requesting_mutex) {
qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex);
}
for (env = first_cpu; env != NULL; env = env->next_cpu) {
qemu_wait_io_event_common(env);
}
}
static void qemu_kvm_wait_io_event(CPUState *env)
{
while (cpu_thread_is_idle(env)) {
qemu_cond_wait(env->halt_cond, &qemu_global_mutex);
}
qemu_kvm_eat_signals(env);
qemu_wait_io_event_common(env);
}
static void *qemu_kvm_cpu_thread_fn(void *arg)
{
CPUState *env = arg;
int r;
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_get_self(env->thread);
env->thread_id = qemu_get_thread_id();
r = kvm_init_vcpu(env);
if (r < 0) {
fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
exit(1);
}
qemu_kvm_init_cpu_signals(env);
/* signal CPU creation */
env->created = 1;
qemu_cond_signal(&qemu_cpu_cond);
while (1) {
if (cpu_can_run(env)) {
r = kvm_cpu_exec(env);
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(env);
}
}
qemu_kvm_wait_io_event(env);
}
return NULL;
}
static void *qemu_tcg_cpu_thread_fn(void *arg)
{
CPUState *env = arg;
qemu_tcg_init_cpu_signals();
qemu_thread_get_self(env->thread);
/* signal CPU creation */
qemu_mutex_lock(&qemu_global_mutex);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
env->thread_id = qemu_get_thread_id();
env->created = 1;
}
qemu_cond_signal(&qemu_cpu_cond);
/* wait for initial kick-off after machine start */
while (first_cpu->stopped) {
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
}
while (1) {
cpu_exec_all();
if (use_icount && qemu_next_icount_deadline() <= 0) {
qemu_notify_event();
}
qemu_tcg_wait_io_event();
}
return NULL;
}
static void qemu_cpu_kick_thread(CPUState *env)
{
#ifndef _WIN32
int err;
err = pthread_kill(env->thread->thread, SIG_IPI);
if (err) {
fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
exit(1);
}
#else /* _WIN32 */
if (!qemu_cpu_is_self(env)) {
SuspendThread(env->thread->thread);
cpu_signal(0);
ResumeThread(env->thread->thread);
}
#endif
}
void qemu_cpu_kick(void *_env)
{
CPUState *env = _env;
qemu_cond_broadcast(env->halt_cond);
if (kvm_enabled() && !env->thread_kicked) {
qemu_cpu_kick_thread(env);
env->thread_kicked = true;
}
}
void qemu_cpu_kick_self(void)
{
#ifndef _WIN32
assert(cpu_single_env);
if (!cpu_single_env->thread_kicked) {
qemu_cpu_kick_thread(cpu_single_env);
cpu_single_env->thread_kicked = true;
}
#else
abort();
#endif
}
int qemu_cpu_is_self(void *_env)
{
CPUState *env = _env;
return qemu_thread_is_self(env->thread);
}
void qemu_mutex_lock_iothread(void)
{
if (kvm_enabled()) {
qemu_mutex_lock(&qemu_global_mutex);
} else {
iothread_requesting_mutex = true;
if (qemu_mutex_trylock(&qemu_global_mutex)) {
qemu_cpu_kick_thread(first_cpu);
qemu_mutex_lock(&qemu_global_mutex);
}
iothread_requesting_mutex = false;
qemu_cond_broadcast(&qemu_io_proceeded_cond);
}
}
void qemu_mutex_unlock_iothread(void)
{
qemu_mutex_unlock(&qemu_global_mutex);
}
static int all_vcpus_paused(void)
{
CPUState *penv = first_cpu;
while (penv) {
if (!penv->stopped) {
return 0;
}
penv = (CPUState *)penv->next_cpu;
}
return 1;
}
void pause_all_vcpus(void)
{
CPUState *penv = first_cpu;
while (penv) {
penv->stop = 1;
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
}
void resume_all_vcpus(void)
{
CPUState *penv = first_cpu;
while (penv) {
penv->stop = 0;
penv->stopped = 0;
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
static void qemu_tcg_init_vcpu(void *_env)
{
CPUState *env = _env;
/* share a single thread for all cpus with TCG */
if (!tcg_cpu_thread) {
env->thread = g_malloc0(sizeof(QemuThread));
env->halt_cond = g_malloc0(sizeof(QemuCond));
qemu_cond_init(env->halt_cond);
tcg_halt_cond = env->halt_cond;
qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env);
while (env->created == 0) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
tcg_cpu_thread = env->thread;
} else {
env->thread = tcg_cpu_thread;
env->halt_cond = tcg_halt_cond;
}
}
static void qemu_kvm_start_vcpu(CPUState *env)
{
env->thread = g_malloc0(sizeof(QemuThread));
env->halt_cond = g_malloc0(sizeof(QemuCond));
qemu_cond_init(env->halt_cond);
qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env);
while (env->created == 0) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
}
void qemu_init_vcpu(void *_env)
{
CPUState *env = _env;
env->nr_cores = smp_cores;
env->nr_threads = smp_threads;
env->stopped = 1;
if (kvm_enabled()) {
qemu_kvm_start_vcpu(env);
} else {
qemu_tcg_init_vcpu(env);
}
}
void qemu_notify_event(void)
{
qemu_event_increment();
}
void cpu_stop_current(void)
{
if (cpu_single_env) {
cpu_single_env->stop = 0;
cpu_single_env->stopped = 1;
cpu_exit(cpu_single_env);
qemu_cond_signal(&qemu_pause_cond);
}
}
void vm_stop(RunState state)
{
if (!qemu_thread_is_self(&io_thread)) {
qemu_system_vmstop_request(state);
/*
* FIXME: should not return to device code in case
* vm_stop() has been requested.
*/
cpu_stop_current();
return;
}
do_vm_stop(state);
}
static int tcg_cpu_exec(CPUState *env)
{
int ret;
#ifdef CONFIG_PROFILER
int64_t ti;
#endif
#ifdef CONFIG_PROFILER
ti = profile_getclock();
#endif
if (use_icount) {
int64_t count;
int decr;
qemu_icount -= (env->icount_decr.u16.low + env->icount_extra);
env->icount_decr.u16.low = 0;
env->icount_extra = 0;
count = qemu_icount_round(qemu_next_icount_deadline());
qemu_icount += count;
decr = (count > 0xffff) ? 0xffff : count;
count -= decr;
env->icount_decr.u16.low = decr;
env->icount_extra = count;
}
ret = cpu_exec(env);
#ifdef CONFIG_PROFILER
qemu_time += profile_getclock() - ti;
#endif
if (use_icount) {
/* Fold pending instructions back into the
instruction counter, and clear the interrupt flag. */
qemu_icount -= (env->icount_decr.u16.low
+ env->icount_extra);
env->icount_decr.u32 = 0;
env->icount_extra = 0;
}
return ret;
}
bool cpu_exec_all(void)
{
int r;
/* Account partial waits to the vm_clock. */
qemu_clock_warp(vm_clock);
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 (cpu_can_run(env)) {
if (kvm_enabled()) {
r = kvm_cpu_exec(env);
qemu_kvm_eat_signals(env);
} else {
r = tcg_cpu_exec(env);
}
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(env);
break;
}
} else if (env->stop || env->stopped) {
break;
}
}
exit_request = 0;
return !all_cpu_threads_idle();
}
void set_numa_modes(void)
{
CPUState *env;
int i;
for (env = first_cpu; env != NULL; env = env->next_cpu) {
for (i = 0; i < nb_numa_nodes; i++) {
if (node_cpumask[i] & (1 << env->cpu_index)) {
env->numa_node = i;
}
}
}
}
void set_cpu_log(const char *optarg)
{
int mask;
const CPULogItem *item;
mask = cpu_str_to_log_mask(optarg);
if (!mask) {
printf("Log items (comma separated):\n");
for (item = cpu_log_items; item->mask != 0; item++) {
printf("%-10s %s\n", item->name, item->help);
}
exit(1);
}
cpu_set_log(mask);
}
void set_cpu_log_filename(const char *optarg)
{
cpu_set_log_filename(optarg);
}
/* Return the virtual CPU time, based on the instruction counter. */
int64_t cpu_get_icount(void)
{
int64_t icount;
CPUState *env = cpu_single_env;;
icount = qemu_icount;
if (env) {
if (!can_do_io(env)) {
fprintf(stderr, "Bad clock read\n");
}
icount -= (env->icount_decr.u16.low + env->icount_extra);
}
return qemu_icount_bias + (icount << icount_time_shift);
}
void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg)
{
/* XXX: implement xxx_cpu_list for targets that still miss it */
#if defined(cpu_list_id)
cpu_list_id(f, cpu_fprintf, optarg);
#elif defined(cpu_list)
cpu_list(f, cpu_fprintf); /* deprecated */
#endif
}
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