diff options
| -rw-r--r-- | vl.c | 62 |
1 files changed, 39 insertions, 23 deletions
@@ -152,8 +152,10 @@ static enum { RTC_BASE_LOCALTIME, RTC_BASE_DATETIME, } rtc_base_type = RTC_BASE_UTC; -static int rtc_host_datetime_offset = -1; /* valid only for host rtc_clock and - rtc_base_type=RTC_BASE_DATETIME */ +static time_t rtc_ref_start_datetime; +static int rtc_realtime_clock_offset; /* used only with QEMU_CLOCK_REALTIME */ +static int rtc_host_datetime_offset = -1; /* valid & used only with + RTC_BASE_DATETIME */ QEMUClockType rtc_clock; int vga_interface_type = VGA_NONE; static DisplayOptions dpy; @@ -247,6 +249,7 @@ static struct { static QemuOptsList qemu_rtc_opts = { .name = "rtc", .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head), + .merge_lists = true, .desc = { { .name = "base", @@ -785,32 +788,42 @@ void qemu_system_vmstop_request(RunState state) } /***********************************************************/ -/* real time host monotonic timer */ - -static time_t qemu_timedate(void) +/* RTC reference time/date access */ +static time_t qemu_ref_timedate(void) { - return qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000; + time_t value = qemu_clock_get_ms(rtc_clock) / 1000; + switch (rtc_clock) { + case QEMU_CLOCK_REALTIME: + value -= rtc_realtime_clock_offset; + /* no break */ + case QEMU_CLOCK_VIRTUAL: + value += rtc_ref_start_datetime; + break; + case QEMU_CLOCK_HOST: + if (rtc_base_type == RTC_BASE_DATETIME) { + value -= rtc_host_datetime_offset; + } + break; + default: + assert(0); + } + return value; } -/***********************************************************/ -/* RTC reference time/date access */ void qemu_get_timedate(struct tm *tm, int offset) { - time_t ti = qemu_timedate(); + time_t ti = qemu_ref_timedate(); ti += offset; switch (rtc_base_type) { + case RTC_BASE_DATETIME: case RTC_BASE_UTC: gmtime_r(&ti, tm); break; case RTC_BASE_LOCALTIME: localtime_r(&ti, tm); break; - case RTC_BASE_DATETIME: - ti -= rtc_host_datetime_offset; - gmtime_r(&ti, tm); - break; } } @@ -819,6 +832,7 @@ int qemu_timedate_diff(struct tm *tm) time_t seconds; switch (rtc_base_type) { + case RTC_BASE_DATETIME: case RTC_BASE_UTC: seconds = mktimegm(tm); break; @@ -829,17 +843,14 @@ int qemu_timedate_diff(struct tm *tm) seconds = mktime(&tmp); break; } - case RTC_BASE_DATETIME: - seconds = mktimegm(tm) + rtc_host_datetime_offset; - break; default: abort(); } - return seconds - qemu_timedate(); + return seconds - qemu_ref_timedate(); } -static void configure_rtc_host_datetime_offset(const char *startdate) +static void configure_rtc_base_datetime(const char *startdate) { time_t rtc_start_datetime; struct tm tm; @@ -865,14 +876,19 @@ static void configure_rtc_host_datetime_offset(const char *startdate) "'2006-06-17T16:01:21' or '2006-06-17'\n"); exit(1); } - rtc_host_datetime_offset = (qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000) - - rtc_start_datetime; + rtc_host_datetime_offset = rtc_ref_start_datetime - rtc_start_datetime; + rtc_ref_start_datetime = rtc_start_datetime; } static void configure_rtc(QemuOpts *opts) { const char *value; + /* Set defaults */ + rtc_clock = QEMU_CLOCK_HOST; + rtc_ref_start_datetime = qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000; + rtc_realtime_clock_offset = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000; + value = qemu_opt_get(opts, "base"); if (value) { if (!strcmp(value, "utc")) { @@ -885,7 +901,7 @@ static void configure_rtc(QemuOpts *opts) replay_add_blocker(blocker); } else { rtc_base_type = RTC_BASE_DATETIME; - configure_rtc_host_datetime_offset(value); + configure_rtc_base_datetime(value); } } value = qemu_opt_get(opts, "clock"); @@ -3035,7 +3051,6 @@ int main(int argc, char **argv, char **envp) error_reportf_err(err, "cannot initialize crypto: "); exit(1); } - rtc_clock = QEMU_CLOCK_HOST; QLIST_INIT (&vm_change_state_head); os_setup_early_signal_handling(); @@ -3755,7 +3770,6 @@ int main(int argc, char **argv, char **envp) if (!opts) { exit(1); } - configure_rtc(opts); break; case QEMU_OPTION_tb_size: #ifndef CONFIG_TCG @@ -3973,6 +3987,8 @@ int main(int argc, char **argv, char **envp) exit(EXIT_FAILURE); } + configure_rtc(qemu_find_opts_singleton("rtc")); + machine_class = select_machine(); set_memory_options(&ram_slots, &maxram_size, machine_class); |