#ifndef QEMU_TIMER_H
#define QEMU_TIMER_H
+#include "qemu-common.h"
+#include "notify.h"
+#include <time.h>
+#include <sys/time.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
/* timers */
+#define SCALE_MS 1000000
+#define SCALE_US 1000
+#define SCALE_NS 1
+
typedef struct QEMUClock QEMUClock;
typedef void QEMUTimerCB(void *opaque);
precision clock, usually cpu cycles (use ticks_per_sec). */
extern QEMUClock *vm_clock;
-int64_t qemu_get_clock(QEMUClock *clock);
+/* The host clock should be use for device models that emulate accurate
+ real time sources. It will continue to run when the virtual machine
+ is suspended, and it will reflect system time changes the host may
+ undergo (e.g. due to NTP). The host clock has the same precision as
+ the virtual clock. */
+extern QEMUClock *host_clock;
-QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque);
+int64_t qemu_get_clock_ns(QEMUClock *clock);
+void qemu_clock_enable(QEMUClock *clock, int enabled);
+void qemu_clock_warp(QEMUClock *clock);
+
+void qemu_register_clock_reset_notifier(QEMUClock *clock, Notifier *notifier);
+void qemu_unregister_clock_reset_notifier(QEMUClock *clock,
+ Notifier *notifier);
+
+QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale,
+ QEMUTimerCB *cb, void *opaque);
void qemu_free_timer(QEMUTimer *ts);
void qemu_del_timer(QEMUTimer *ts);
void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time);
int qemu_timer_pending(QEMUTimer *ts);
int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time);
-extern int64_t ticks_per_sec;
+void qemu_run_all_timers(void);
+int qemu_alarm_pending(void);
+int64_t qemu_next_icount_deadline(void);
+void configure_alarms(char const *opt);
+void configure_icount(const char *option);
+int qemu_calculate_timeout(void);
+void init_clocks(void);
+int init_timer_alarm(void);
+void quit_timers(void);
+
+int64_t cpu_get_ticks(void);
+void cpu_enable_ticks(void);
+void cpu_disable_ticks(void);
+
+static inline QEMUTimer *qemu_new_timer_ns(QEMUClock *clock, QEMUTimerCB *cb,
+ void *opaque)
+{
+ return qemu_new_timer(clock, SCALE_NS, cb, opaque);
+}
+
+static inline QEMUTimer *qemu_new_timer_ms(QEMUClock *clock, QEMUTimerCB *cb,
+ void *opaque)
+{
+ return qemu_new_timer(clock, SCALE_MS, cb, opaque);
+}
+
+static inline int64_t qemu_get_clock_ms(QEMUClock *clock)
+{
+ return qemu_get_clock_ns(clock) / SCALE_MS;
+}
+
+static inline int64_t get_ticks_per_sec(void)
+{
+ return 1000000000LL;
+}
+
+/* real time host monotonic timer */
+static inline int64_t get_clock_realtime(void)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec * 1000000000LL + (tv.tv_usec * 1000);
+}
+
+/* Warning: don't insert tracepoints into these functions, they are
+ also used by simpletrace backend and tracepoints would cause
+ an infinite recursion! */
+#ifdef _WIN32
+extern int64_t clock_freq;
+
+static inline int64_t get_clock(void)
+{
+ LARGE_INTEGER ti;
+ QueryPerformanceCounter(&ti);
+ return muldiv64(ti.QuadPart, get_ticks_per_sec(), clock_freq);
+}
+
+#else
+
+extern int use_rt_clock;
+
+static inline int64_t get_clock(void)
+{
+#if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD_version >= 500000) \
+ || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
+ if (use_rt_clock) {
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return ts.tv_sec * 1000000000LL + ts.tv_nsec;
+ } else
+#endif
+ {
+ /* XXX: using gettimeofday leads to problems if the date
+ changes, so it should be avoided. */
+ return get_clock_realtime();
+ }
+}
+#endif
void qemu_get_timer(QEMUFile *f, QEMUTimer *ts);
void qemu_put_timer(QEMUFile *f, QEMUTimer *ts);
void ptimer_set_count(ptimer_state *s, uint64_t count);
void ptimer_run(ptimer_state *s, int oneshot);
void ptimer_stop(ptimer_state *s);
-void qemu_put_ptimer(QEMUFile *f, ptimer_state *s);
-void qemu_get_ptimer(QEMUFile *f, ptimer_state *s);
+
+/* icount */
+int64_t qemu_icount_round(int64_t count);
+extern int64_t qemu_icount;
+extern int use_icount;
+extern int icount_time_shift;
+extern int64_t qemu_icount_bias;
+int64_t cpu_get_icount(void);
+
+/*******************************************/
+/* host CPU ticks (if available) */
+
+#if defined(_ARCH_PPC)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ int64_t retval;
+#ifdef _ARCH_PPC64
+ /* This reads timebase in one 64bit go and includes Cell workaround from:
+ http://ozlabs.org/pipermail/linuxppc-dev/2006-October/027052.html
+ */
+ __asm__ __volatile__ ("mftb %0\n\t"
+ "cmpwi %0,0\n\t"
+ "beq- $-8"
+ : "=r" (retval));
+#else
+ /* http://ozlabs.org/pipermail/linuxppc-dev/1999-October/003889.html */
+ unsigned long junk;
+ __asm__ __volatile__ ("mfspr %1,269\n\t" /* mftbu */
+ "mfspr %L0,268\n\t" /* mftb */
+ "mfspr %0,269\n\t" /* mftbu */
+ "cmpw %0,%1\n\t"
+ "bne $-16"
+ : "=r" (retval), "=r" (junk));
+#endif
+ return retval;
+}
+
+#elif defined(__i386__)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ int64_t val;
+ asm volatile ("rdtsc" : "=A" (val));
+ return val;
+}
+
+#elif defined(__x86_64__)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ uint32_t low,high;
+ int64_t val;
+ asm volatile("rdtsc" : "=a" (low), "=d" (high));
+ val = high;
+ val <<= 32;
+ val |= low;
+ return val;
+}
+
+#elif defined(__hppa__)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ int val;
+ asm volatile ("mfctl %%cr16, %0" : "=r"(val));
+ return val;
+}
+
+#elif defined(__ia64)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ int64_t val;
+ asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
+ return val;
+}
+
+#elif defined(__s390__)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ int64_t val;
+ asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
+ return val;
+}
+
+#elif defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
+
+static inline int64_t cpu_get_real_ticks (void)
+{
+#if defined(_LP64)
+ uint64_t rval;
+ asm volatile("rd %%tick,%0" : "=r"(rval));
+ return rval;
+#else
+ union {
+ uint64_t i64;
+ struct {
+ uint32_t high;
+ uint32_t low;
+ } i32;
+ } rval;
+ asm volatile("rd %%tick,%1; srlx %1,32,%0"
+ : "=r"(rval.i32.high), "=r"(rval.i32.low));
+ return rval.i64;
+#endif
+}
+
+#elif defined(__mips__) && \
+ ((defined(__mips_isa_rev) && __mips_isa_rev >= 2) || defined(__linux__))
+/*
+ * binutils wants to use rdhwr only on mips32r2
+ * but as linux kernel emulate it, it's fine
+ * to use it.
+ *
+ */
+#define MIPS_RDHWR(rd, value) { \
+ __asm__ __volatile__ (".set push\n\t" \
+ ".set mips32r2\n\t" \
+ "rdhwr %0, "rd"\n\t" \
+ ".set pop" \
+ : "=r" (value)); \
+ }
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ /* On kernels >= 2.6.25 rdhwr <reg>, $2 and $3 are emulated */
+ uint32_t count;
+ static uint32_t cyc_per_count = 0;
+
+ if (!cyc_per_count) {
+ MIPS_RDHWR("$3", cyc_per_count);
+ }
+
+ MIPS_RDHWR("$2", count);
+ return (int64_t)(count * cyc_per_count);
+}
+
+#elif defined(__alpha__)
+
+static inline int64_t cpu_get_real_ticks(void)
+{
+ uint64_t cc;
+ uint32_t cur, ofs;
+
+ asm volatile("rpcc %0" : "=r"(cc));
+ cur = cc;
+ ofs = cc >> 32;
+ return cur - ofs;
+}
+
+#else
+/* The host CPU doesn't have an easily accessible cycle counter.
+ Just return a monotonically increasing value. This will be
+ totally wrong, but hopefully better than nothing. */
+static inline int64_t cpu_get_real_ticks (void)
+{
+ static int64_t ticks = 0;
+ return ticks++;
+}
+#endif
+
+#ifdef NEED_CPU_H
+/* Deterministic execution requires that IO only be performed on the last
+ instruction of a TB so that interrupts take effect immediately. */
+static inline int can_do_io(CPUState *env)
+{
+ if (!use_icount)
+ return 1;
+
+ /* If not executing code then assume we are ok. */
+ if (!env->current_tb)
+ return 1;
+
+ return env->can_do_io != 0;
+}
+#endif
+
+#ifdef CONFIG_PROFILER
+static inline int64_t profile_getclock(void)
+{
+ return cpu_get_real_ticks();
+}
+
+extern int64_t qemu_time, qemu_time_start;
+extern int64_t tlb_flush_time;
+extern int64_t dev_time;
+#endif
#endif
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