#include "slirp/libslirp.h"
#include "qemu-queue.h"
+#include "cpus.h"
//#define DEBUG_NET
//#define DEBUG_SLIRP
uint64_t node_mem[MAX_NODES];
uint64_t node_cpumask[MAX_NODES];
-static CPUState *cur_cpu;
-static CPUState *next_cpu;
static QEMUTimer *nographic_timer;
uint8_t qemu_uuid[16];
target_phys_addr_t isa_mem_base = 0;
PicState2 *isa_pic;
-/***********************************************************/
-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();
-}
-
static void set_proc_name(const char *s)
{
#if defined(__linux__) && defined(PR_SET_NAME)
qemu_mod_timer(nographic_timer, interval + qemu_get_clock(rt_clock));
}
-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);
- }
-}
-
struct vm_change_state_entry {
VMChangeStateHandler *cb;
void *opaque;
qemu_free (e);
}
-static void vm_state_notify(int running, int reason)
+void vm_state_notify(int running, int reason)
{
VMChangeStateEntry *e;
}
}
-static void resume_all_vcpus(void);
-static void pause_all_vcpus(void);
-
void vm_start(void)
{
if (!vm_running) {
static int reset_requested;
static int shutdown_requested;
static int powerdown_requested;
-static int debug_requested;
+int debug_requested;
static int vmstop_requested;
int qemu_shutdown_requested(void)
return r;
}
-static void do_vm_stop(int reason)
-{
- if (vm_running) {
- cpu_disable_ticks();
- vm_running = 0;
- pause_all_vcpus();
- vm_state_notify(0, reason);
- monitor_protocol_event(QEVENT_STOP, NULL);
- }
-}
-
void qemu_register_reset(QEMUResetHandler *func, void *opaque)
{
QEMUResetEntry *re = qemu_mallocz(sizeof(QEMUResetEntry));
qemu_notify_event();
}
-static int cpu_can_run(CPUState *env)
-{
- if (env->stop)
- return 0;
- if (env->stopped)
- return 0;
- if (!vm_running)
- return 0;
- return 1;
-}
-
-static int cpu_has_work(CPUState *env)
-{
- if (env->stop)
- return 1;
- if (env->stopped)
- return 0;
- if (!env->halted)
- return 1;
- if (qemu_cpu_has_work(env))
- return 1;
- return 0;
-}
-
-static int tcg_has_work(void)
-{
- CPUState *env;
-
- for (env = first_cpu; env != NULL; env = env->next_cpu)
- if (cpu_has_work(env))
- return 1;
- return 0;
-}
-
-#ifndef _WIN32
-static int io_thread_fd = -1;
-
-static void qemu_event_increment(void)
-{
- /* Write 8 bytes to be compatible with eventfd. */
- static 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() filed: %s\n",
- strerror(errno));
- exit (1);
- }
-}
-
-static void qemu_event_read(void *opaque)
-{
- int fd = (unsigned long)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 *)(unsigned long)fds[0]);
-
- io_thread_fd = fds[1];
- return 0;
-
-fail:
- close(fds[0]);
- close(fds[1]);
- return err;
-}
-#else
-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);
- }
-}
-#endif
-
-#ifndef CONFIG_IOTHREAD
-static int qemu_init_main_loop(void)
-{
- return qemu_event_init();
-}
-
-void qemu_init_vcpu(void *_env)
-{
- CPUState *env = _env;
-
- env->nr_cores = smp_cores;
- env->nr_threads = smp_threads;
- if (kvm_enabled())
- kvm_init_vcpu(env);
- return;
-}
-
-int qemu_cpu_self(void *env)
-{
- return 1;
-}
-
-static void resume_all_vcpus(void)
-{
-}
-
-static void pause_all_vcpus(void)
-{
-}
-
-void qemu_cpu_kick(void *env)
-{
- return;
-}
-
-void qemu_notify_event(void)
-{
- CPUState *env = cpu_single_env;
-
- qemu_event_increment ();
- if (env) {
- cpu_exit(env);
- }
- if (next_cpu && env != next_cpu) {
- cpu_exit(next_cpu);
- }
-}
-
-void qemu_mutex_lock_iothread(void) {}
-void qemu_mutex_unlock_iothread(void) {}
-
-void vm_stop(int reason)
-{
- do_vm_stop(reason);
-}
-
-#else /* CONFIG_IOTHREAD */
-
-#include "qemu-thread.h"
-
-QemuMutex qemu_global_mutex;
-static QemuMutex qemu_fair_mutex;
-
-static QemuThread io_thread;
-
-static QemuThread *tcg_cpu_thread;
-static QemuCond *tcg_halt_cond;
-
-static int qemu_system_ready;
-/* cpu creation */
-static QemuCond qemu_cpu_cond;
-/* system init */
-static QemuCond qemu_system_cond;
-static QemuCond qemu_pause_cond;
-
-static void tcg_block_io_signals(void);
-static void kvm_block_io_signals(CPUState *env);
-static void unblock_io_signals(void);
-
-static int qemu_init_main_loop(void)
-{
- int ret;
-
- ret = qemu_event_init();
- if (ret)
- return ret;
-
- qemu_cond_init(&qemu_pause_cond);
- qemu_mutex_init(&qemu_fair_mutex);
- qemu_mutex_init(&qemu_global_mutex);
- qemu_mutex_lock(&qemu_global_mutex);
-
- unblock_io_signals();
- qemu_thread_self(&io_thread);
-
- return 0;
-}
-
-static void qemu_wait_io_event_common(CPUState *env)
-{
- if (env->stop) {
- env->stop = 0;
- env->stopped = 1;
- qemu_cond_signal(&qemu_pause_cond);
- }
-}
-
-static void qemu_wait_io_event(CPUState *env)
-{
- while (!tcg_has_work())
- qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
-
- qemu_mutex_unlock(&qemu_global_mutex);
-
- /*
- * Users of qemu_global_mutex can be starved, having no chance
- * to acquire it since this path will get to it first.
- * So use another lock to provide fairness.
- */
- qemu_mutex_lock(&qemu_fair_mutex);
- qemu_mutex_unlock(&qemu_fair_mutex);
-
- qemu_mutex_lock(&qemu_global_mutex);
- qemu_wait_io_event_common(env);
-}
-
-static void qemu_kvm_eat_signal(CPUState *env, int timeout)
-{
- struct timespec ts;
- int r, e;
- siginfo_t siginfo;
- sigset_t waitset;
-
- ts.tv_sec = timeout / 1000;
- ts.tv_nsec = (timeout % 1000) * 1000000;
-
- sigemptyset(&waitset);
- sigaddset(&waitset, SIG_IPI);
-
- qemu_mutex_unlock(&qemu_global_mutex);
- r = sigtimedwait(&waitset, &siginfo, &ts);
- e = errno;
- qemu_mutex_lock(&qemu_global_mutex);
-
- if (r == -1 && !(e == EAGAIN || e == EINTR)) {
- fprintf(stderr, "sigtimedwait: %s\n", strerror(e));
- exit(1);
- }
-}
-
-static void qemu_kvm_wait_io_event(CPUState *env)
-{
- while (!cpu_has_work(env))
- qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
-
- qemu_kvm_eat_signal(env, 0);
- qemu_wait_io_event_common(env);
-}
-
-static int qemu_cpu_exec(CPUState *env);
-
-static void *kvm_cpu_thread_fn(void *arg)
-{
- CPUState *env = arg;
-
- qemu_thread_self(env->thread);
- if (kvm_enabled())
- kvm_init_vcpu(env);
-
- kvm_block_io_signals(env);
-
- /* signal CPU creation */
- qemu_mutex_lock(&qemu_global_mutex);
- 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;
-}
-
-static bool tcg_cpu_exec(void);
-
-static void *tcg_cpu_thread_fn(void *arg)
-{
- CPUState *env = arg;
-
- tcg_block_io_signals();
- qemu_thread_self(env->thread);
-
- /* signal CPU creation */
- qemu_mutex_lock(&qemu_global_mutex);
- for (env = first_cpu; env != NULL; env = env->next_cpu)
- 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) {
- tcg_cpu_exec();
- qemu_wait_io_event(cur_cpu);
- }
-
- return NULL;
-}
-
-void qemu_cpu_kick(void *_env)
-{
- CPUState *env = _env;
- qemu_cond_broadcast(env->halt_cond);
- if (kvm_enabled())
- qemu_thread_signal(env->thread, SIG_IPI);
-}
-
-int qemu_cpu_self(void *_env)
-{
- CPUState *env = _env;
- QemuThread this;
-
- qemu_thread_self(&this);
-
- return qemu_thread_equal(&this, env->thread);
-}
-
-static void cpu_signal(int sig)
-{
- if (cpu_single_env)
- cpu_exit(cpu_single_env);
-}
-
-static void tcg_block_io_signals(void)
-{
- sigset_t set;
- struct sigaction sigact;
-
- sigemptyset(&set);
- sigaddset(&set, SIGUSR2);
- sigaddset(&set, SIGIO);
- sigaddset(&set, SIGALRM);
- sigaddset(&set, SIGCHLD);
- pthread_sigmask(SIG_BLOCK, &set, NULL);
-
- sigemptyset(&set);
- sigaddset(&set, SIG_IPI);
- pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-
- memset(&sigact, 0, sizeof(sigact));
- sigact.sa_handler = cpu_signal;
- sigaction(SIG_IPI, &sigact, NULL);
-}
-
-static void dummy_signal(int sig)
-{
-}
-
-static void kvm_block_io_signals(CPUState *env)
-{
- int r;
- sigset_t set;
- struct sigaction sigact;
-
- sigemptyset(&set);
- sigaddset(&set, SIGUSR2);
- sigaddset(&set, SIGIO);
- sigaddset(&set, SIGALRM);
- sigaddset(&set, SIGCHLD);
- sigaddset(&set, SIG_IPI);
- pthread_sigmask(SIG_BLOCK, &set, NULL);
-
- pthread_sigmask(SIG_BLOCK, NULL, &set);
- sigdelset(&set, SIG_IPI);
-
- memset(&sigact, 0, sizeof(sigact));
- sigact.sa_handler = dummy_signal;
- sigaction(SIG_IPI, &sigact, NULL);
-
- r = kvm_set_signal_mask(env, &set);
- if (r) {
- fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(r));
- exit(1);
- }
-}
-
-static void unblock_io_signals(void)
-{
- sigset_t set;
-
- sigemptyset(&set);
- sigaddset(&set, SIGUSR2);
- sigaddset(&set, SIGIO);
- sigaddset(&set, SIGALRM);
- pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-
- sigemptyset(&set);
- sigaddset(&set, SIG_IPI);
- pthread_sigmask(SIG_BLOCK, &set, NULL);
-}
-
-static void qemu_signal_lock(unsigned int msecs)
-{
- qemu_mutex_lock(&qemu_fair_mutex);
-
- while (qemu_mutex_trylock(&qemu_global_mutex)) {
- qemu_thread_signal(tcg_cpu_thread, SIG_IPI);
- if (!qemu_mutex_timedlock(&qemu_global_mutex, msecs))
- break;
- }
- qemu_mutex_unlock(&qemu_fair_mutex);
-}
-
-void qemu_mutex_lock_iothread(void)
-{
- if (kvm_enabled()) {
- qemu_mutex_lock(&qemu_fair_mutex);
- qemu_mutex_lock(&qemu_global_mutex);
- qemu_mutex_unlock(&qemu_fair_mutex);
- } else
- qemu_signal_lock(100);
-}
-
-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;
-}
-
-static void pause_all_vcpus(void)
-{
- CPUState *penv = first_cpu;
-
- while (penv) {
- penv->stop = 1;
- qemu_thread_signal(penv->thread, SIG_IPI);
- qemu_cpu_kick(penv);
- penv = (CPUState *)penv->next_cpu;
- }
-
- while (!all_vcpus_paused()) {
- qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
- penv = first_cpu;
- while (penv) {
- qemu_thread_signal(penv->thread, SIG_IPI);
- penv = (CPUState *)penv->next_cpu;
- }
- }
-}
-
-static void resume_all_vcpus(void)
-{
- CPUState *penv = first_cpu;
-
- while (penv) {
- penv->stop = 0;
- penv->stopped = 0;
- qemu_thread_signal(penv->thread, SIG_IPI);
- qemu_cpu_kick(penv);
- penv = (CPUState *)penv->next_cpu;
- }
-}
-
-static void tcg_init_vcpu(void *_env)
-{
- CPUState *env = _env;
- /* share a single thread for all cpus with TCG */
- if (!tcg_cpu_thread) {
- env->thread = qemu_mallocz(sizeof(QemuThread));
- env->halt_cond = qemu_mallocz(sizeof(QemuCond));
- qemu_cond_init(env->halt_cond);
- qemu_thread_create(env->thread, tcg_cpu_thread_fn, env);
- while (env->created == 0)
- qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
- tcg_cpu_thread = env->thread;
- tcg_halt_cond = env->halt_cond;
- } else {
- env->thread = tcg_cpu_thread;
- env->halt_cond = tcg_halt_cond;
- }
-}
-
-static void kvm_start_vcpu(CPUState *env)
-{
- env->thread = qemu_mallocz(sizeof(QemuThread));
- env->halt_cond = qemu_mallocz(sizeof(QemuCond));
- qemu_cond_init(env->halt_cond);
- qemu_thread_create(env->thread, kvm_cpu_thread_fn, env);
- while (env->created == 0)
- qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
-}
-
-void qemu_init_vcpu(void *_env)
-{
- CPUState *env = _env;
-
- env->nr_cores = smp_cores;
- env->nr_threads = smp_threads;
- if (kvm_enabled())
- kvm_start_vcpu(env);
- else
- tcg_init_vcpu(env);
-}
-
-void qemu_notify_event(void)
-{
- qemu_event_increment();
-}
-
-static void qemu_system_vmstop_request(int reason)
-{
- vmstop_requested = reason;
- qemu_notify_event();
-}
-
-void vm_stop(int reason)
-{
- QemuThread me;
- qemu_thread_self(&me);
-
- if (!qemu_thread_equal(&me, &io_thread)) {
- qemu_system_vmstop_request(reason);
- /*
- * FIXME: should not return to device code in case
- * vm_stop() has been requested.
- */
- if (cpu_single_env) {
- cpu_exit(cpu_single_env);
- cpu_single_env->stop = 1;
- }
- return;
- }
- do_vm_stop(reason);
-}
-
-#endif
-
-
#ifdef _WIN32
static void host_main_loop_wait(int *timeout)
{
}
-static int qemu_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_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;
-}
-
-static 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 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;
- }
- }
- }
-}
-
-static 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);
-}
-
static int vm_can_run(void)
{
if (powerdown_requested)
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