#include "gdbstub.h"
#include "dma.h"
#include "kvm.h"
+#include "qmp-commands.h"
#include "qemu-thread.h"
#include "cpus.h"
+#include "main-loop.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>
#endif /* CONFIG_LINUX */
-static CPUState *next_cpu;
+static CPUArchState *next_cpu;
/***********************************************************/
/* guest cycle counter */
int64_t cpu_get_icount(void)
{
int64_t icount;
- CPUState *env = cpu_single_env;;
+ CPUArchState *env = cpu_single_env;
icount = qemu_icount;
if (env) {
* (related to the time left until the next event) has passed. This
* rt_clock timer will do this. This avoids that the warps are too
* visible externally---for example, you will not be sending network
- * packets continously instead of every 100ms.
+ * packets continuously instead of every 100ms.
*/
qemu_mod_timer(icount_warp_timer, vm_clock_warp_start + deadline);
} else {
void hw_error(const char *fmt, ...)
{
va_list ap;
- CPUState *env;
+ CPUArchState *env;
va_start(ap, fmt);
fprintf(stderr, "qemu: hardware error: ");
void cpu_synchronize_all_states(void)
{
- CPUState *cpu;
+ CPUArchState *cpu;
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
cpu_synchronize_state(cpu);
void cpu_synchronize_all_post_reset(void)
{
- CPUState *cpu;
+ CPUArchState *cpu;
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
cpu_synchronize_post_reset(cpu);
void cpu_synchronize_all_post_init(void)
{
- CPUState *cpu;
+ CPUArchState *cpu;
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
cpu_synchronize_post_init(cpu);
}
}
-int cpu_is_stopped(CPUState *env)
+int cpu_is_stopped(CPUArchState *env)
{
return !runstate_is_running() || env->stopped;
}
pause_all_vcpus();
runstate_set(state);
vm_state_notify(0, state);
- qemu_aio_flush();
+ bdrv_drain_all();
bdrv_flush_all();
monitor_protocol_event(QEVENT_STOP, NULL);
}
}
-static int cpu_can_run(CPUState *env)
+static int cpu_can_run(CPUArchState *env)
{
if (env->stop) {
return 0;
return 1;
}
-static bool cpu_thread_is_idle(CPUState *env)
+static bool cpu_thread_is_idle(CPUArchState *env)
{
if (env->stop || env->queued_work_first) {
return false;
bool all_cpu_threads_idle(void)
{
- CPUState *env;
+ CPUArchState *env;
for (env = first_cpu; env != NULL; env = env->next_cpu) {
if (!cpu_thread_is_idle(env)) {
return true;
}
-static void cpu_handle_guest_debug(CPUState *env)
+static void cpu_handle_guest_debug(CPUArchState *env)
{
gdb_set_stop_cpu(env);
qemu_system_debug_request();
prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0);
}
-static void qemu_kvm_eat_signals(CPUState *env)
+static void qemu_kvm_eat_signals(CPUArchState *env)
{
struct timespec ts = { 0, 0 };
siginfo_t siginfo;
{
}
-static void qemu_kvm_eat_signals(CPUState *env)
+static void qemu_kvm_eat_signals(CPUArchState *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;
-
- /*
- * 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)
+static void qemu_kvm_init_cpu_signals(CPUArchState *env)
{
int r;
sigset_t set;
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)
}
#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)
+static void qemu_kvm_init_cpu_signals(CPUArchState *env)
{
abort();
}
static QemuCond qemu_pause_cond;
static QemuCond qemu_work_cond;
-int qemu_init_main_loop(void)
+void qemu_init_cpu_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)
+void run_on_cpu(CPUArchState *env, void (*func)(void *data), void *data)
{
struct qemu_work_item wi;
qemu_cpu_kick(env);
while (!wi.done) {
- CPUState *self_env = cpu_single_env;
+ CPUArchState *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)
+static void flush_queued_work(CPUArchState *env)
{
struct qemu_work_item *wi;
qemu_cond_broadcast(&qemu_work_cond);
}
-static void qemu_wait_io_event_common(CPUState *env)
+static void qemu_wait_io_event_common(CPUArchState *env)
{
if (env->stop) {
env->stop = 0;
static void qemu_tcg_wait_io_event(void)
{
- CPUState *env;
+ CPUArchState *env;
while (all_cpu_threads_idle()) {
/* Start accounting real time to the virtual clock if the CPUs
}
}
-static void qemu_kvm_wait_io_event(CPUState *env)
+static void qemu_kvm_wait_io_event(CPUArchState *env)
{
while (cpu_thread_is_idle(env)) {
qemu_cond_wait(env->halt_cond, &qemu_global_mutex);
static void *qemu_kvm_cpu_thread_fn(void *arg)
{
- CPUState *env = arg;
+ CPUArchState *env = arg;
int r;
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_get_self(env->thread);
env->thread_id = qemu_get_thread_id();
+ cpu_single_env = env;
r = kvm_init_vcpu(env);
if (r < 0) {
return NULL;
}
+static void tcg_exec_all(void);
+
static void *qemu_tcg_cpu_thread_fn(void *arg)
{
- CPUState *env = arg;
+ CPUArchState *env = arg;
qemu_tcg_init_cpu_signals();
qemu_thread_get_self(env->thread);
/* wait for initial kick-off after machine start */
while (first_cpu->stopped) {
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
+
+ /* process any pending work */
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ qemu_wait_io_event_common(env);
+ }
}
while (1) {
- cpu_exec_all();
+ tcg_exec_all();
if (use_icount && qemu_clock_deadline(vm_clock) <= 0) {
qemu_notify_event();
}
return NULL;
}
-static void qemu_cpu_kick_thread(CPUState *env)
+static void qemu_cpu_kick_thread(CPUArchState *env)
{
#ifndef _WIN32
int err;
}
#else /* _WIN32 */
if (!qemu_cpu_is_self(env)) {
- SuspendThread(env->thread->thread);
+ SuspendThread(env->hThread);
cpu_signal(0);
- ResumeThread(env->thread->thread);
+ ResumeThread(env->hThread);
}
#endif
}
void qemu_cpu_kick(void *_env)
{
- CPUState *env = _env;
+ CPUArchState *env = _env;
qemu_cond_broadcast(env->halt_cond);
if (kvm_enabled() && !env->thread_kicked) {
int qemu_cpu_is_self(void *_env)
{
- CPUState *env = _env;
+ CPUArchState *env = _env;
return qemu_thread_is_self(env->thread);
}
static int all_vcpus_paused(void)
{
- CPUState *penv = first_cpu;
+ CPUArchState *penv = first_cpu;
while (penv) {
if (!penv->stopped) {
return 0;
}
- penv = (CPUState *)penv->next_cpu;
+ penv = penv->next_cpu;
}
return 1;
void pause_all_vcpus(void)
{
- CPUState *penv = first_cpu;
+ CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, false);
while (penv) {
penv->stop = 1;
qemu_cpu_kick(penv);
- penv = (CPUState *)penv->next_cpu;
+ penv = penv->next_cpu;
+ }
+
+ if (!qemu_thread_is_self(&io_thread)) {
+ cpu_stop_current();
+ if (!kvm_enabled()) {
+ while (penv) {
+ penv->stop = 0;
+ penv->stopped = 1;
+ penv = penv->next_cpu;
+ }
+ return;
+ }
}
while (!all_vcpus_paused()) {
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
- penv = (CPUState *)penv->next_cpu;
+ penv = penv->next_cpu;
}
}
}
void resume_all_vcpus(void)
{
- CPUState *penv = first_cpu;
+ CPUArchState *penv = first_cpu;
+ qemu_clock_enable(vm_clock, true);
while (penv) {
penv->stop = 0;
penv->stopped = 0;
qemu_cpu_kick(penv);
- penv = (CPUState *)penv->next_cpu;
+ penv = penv->next_cpu;
}
}
static void qemu_tcg_init_vcpu(void *_env)
{
- CPUState *env = _env;
+ CPUArchState *env = _env;
/* share a single thread for all cpus with TCG */
if (!tcg_cpu_thread) {
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);
+ qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env,
+ QEMU_THREAD_JOINABLE);
+#ifdef _WIN32
+ env->hThread = qemu_thread_get_handle(env->thread);
+#endif
while (env->created == 0) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
}
}
-static void qemu_kvm_start_vcpu(CPUState *env)
+static void qemu_kvm_start_vcpu(CPUArchState *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);
+ qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env,
+ QEMU_THREAD_JOINABLE);
while (env->created == 0) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
void qemu_init_vcpu(void *_env)
{
- CPUState *env = _env;
+ CPUArchState *env = _env;
env->nr_cores = smp_cores;
env->nr_threads = smp_threads;
}
}
-void qemu_notify_event(void)
-{
- qemu_event_increment();
-}
-
void cpu_stop_current(void)
{
if (cpu_single_env) {
}
}
-static int tcg_cpu_exec(CPUState *env)
+static int tcg_cpu_exec(CPUArchState *env)
{
int ret;
#ifdef CONFIG_PROFILER
return ret;
}
-bool cpu_exec_all(void)
+static void tcg_exec_all(void)
{
int r;
next_cpu = first_cpu;
}
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) {
- CPUState *env = next_cpu;
+ CPUArchState *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);
- }
+ r = tcg_cpu_exec(env);
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(env);
break;
}
}
exit_request = 0;
- return !all_cpu_threads_idle();
}
void set_numa_modes(void)
{
- CPUState *env;
+ CPUArchState *env;
int i;
for (env = first_cpu; env != NULL; env = env->next_cpu) {
cpu_list(f, cpu_fprintf); /* deprecated */
#endif
}
+
+CpuInfoList *qmp_query_cpus(Error **errp)
+{
+ CpuInfoList *head = NULL, *cur_item = NULL;
+ CPUArchState *env;
+
+ for(env = first_cpu; env != NULL; env = env->next_cpu) {
+ CpuInfoList *info;
+
+ cpu_synchronize_state(env);
+
+ info = g_malloc0(sizeof(*info));
+ info->value = g_malloc0(sizeof(*info->value));
+ info->value->CPU = env->cpu_index;
+ info->value->current = (env == first_cpu);
+ info->value->halted = env->halted;
+ info->value->thread_id = env->thread_id;
+#if defined(TARGET_I386)
+ info->value->has_pc = true;
+ info->value->pc = env->eip + env->segs[R_CS].base;
+#elif defined(TARGET_PPC)
+ info->value->has_nip = true;
+ info->value->nip = env->nip;
+#elif defined(TARGET_SPARC)
+ info->value->has_pc = true;
+ info->value->pc = env->pc;
+ info->value->has_npc = true;
+ info->value->npc = env->npc;
+#elif defined(TARGET_MIPS)
+ info->value->has_PC = true;
+ info->value->PC = env->active_tc.PC;
+#endif
+
+ /* XXX: waiting for the qapi to support GSList */
+ if (!cur_item) {
+ head = cur_item = info;
+ } else {
+ cur_item->next = info;
+ cur_item = info;
+ }
+ }
+
+ return head;
+}
+
+void qmp_memsave(int64_t addr, int64_t size, const char *filename,
+ bool has_cpu, int64_t cpu_index, Error **errp)
+{
+ FILE *f;
+ uint32_t l;
+ CPUArchState *env;
+ uint8_t buf[1024];
+
+ if (!has_cpu) {
+ cpu_index = 0;
+ }
+
+ for (env = first_cpu; env; env = env->next_cpu) {
+ if (cpu_index == env->cpu_index) {
+ break;
+ }
+ }
+
+ if (env == NULL) {
+ error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
+ "a CPU number");
+ return;
+ }
+
+ f = fopen(filename, "wb");
+ if (!f) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, filename);
+ return;
+ }
+
+ while (size != 0) {
+ l = sizeof(buf);
+ if (l > size)
+ l = size;
+ cpu_memory_rw_debug(env, addr, buf, l, 0);
+ if (fwrite(buf, 1, l, f) != l) {
+ error_set(errp, QERR_IO_ERROR);
+ goto exit;
+ }
+ addr += l;
+ size -= l;
+ }
+
+exit:
+ fclose(f);
+}
+
+void qmp_pmemsave(int64_t addr, int64_t size, const char *filename,
+ Error **errp)
+{
+ FILE *f;
+ uint32_t l;
+ uint8_t buf[1024];
+
+ f = fopen(filename, "wb");
+ if (!f) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, filename);
+ return;
+ }
+
+ while (size != 0) {
+ l = sizeof(buf);
+ if (l > size)
+ l = size;
+ cpu_physical_memory_rw(addr, buf, l, 0);
+ if (fwrite(buf, 1, l, f) != l) {
+ error_set(errp, QERR_IO_ERROR);
+ goto exit;
+ }
+ addr += l;
+ size -= l;
+ }
+
+exit:
+ fclose(f);
+}
+
+void qmp_inject_nmi(Error **errp)
+{
+#if defined(TARGET_I386)
+ CPUArchState *env;
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ if (!env->apic_state) {
+ cpu_interrupt(env, CPU_INTERRUPT_NMI);
+ } else {
+ apic_deliver_nmi(env->apic_state);
+ }
+ }
+#else
+ error_set(errp, QERR_UNSUPPORTED);
+#endif
+}
projects / qemu.git / blobdiff