Fix RTC initial date computation

qemu_get_clock() returns a structure containing the time the user wants
to be set (either UTC time, a local time, or a given date). Use mktimegm()
instead of mktime() to convert it into POSIX time without taking the host
timezone into account.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5878 c046a42c-6fe2-441c-8c8c-71466251a162

hw/omap1.c

@@ -3349,7 +3349,7 @@ static void omap_rtc_interrupts_update(struct omap_rtc_s *s)
 
 static void omap_rtc_alarm_update(struct omap_rtc_s *s)
 {
-    s->alarm_ti = mktime(&s->alarm_tm);
+    s->alarm_ti = mktimegm(&s->alarm_tm);
     if (s->alarm_ti == -1)
         printf("%s: conversion failed\n", __FUNCTION__);
 }
@@ -3492,8 +3492,8 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
 #endif
         memcpy(&new_tm, &s->current_tm, sizeof(new_tm));
         new_tm.tm_mon = omap_rtc_bin(value);
-        ti[0] = mktime(&s->current_tm);
-        ti[1] = mktime(&new_tm);
+        ti[0] = mktimegm(&s->current_tm);
+        ti[1] = mktimegm(&new_tm);
 
         if (ti[0] != -1 && ti[1] != -1) {
             s->ti -= ti[0];
@@ -3511,8 +3511,8 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
 #endif
         memcpy(&new_tm, &s->current_tm, sizeof(new_tm));
         new_tm.tm_year += omap_rtc_bin(value) - (new_tm.tm_year % 100);
-        ti[0] = mktime(&s->current_tm);
-        ti[1] = mktime(&new_tm);
+        ti[0] = mktimegm(&s->current_tm);
+        ti[1] = mktimegm(&new_tm);
 
         if (ti[0] != -1 && ti[1] != -1) {
             s->ti -= ti[0];
@@ -3719,7 +3719,7 @@ static void omap_rtc_reset(struct omap_rtc_s *s)
     s->alarm_tm.tm_mday = 0x01;
     s->status = 1 << 7;
     qemu_get_timedate(&tm, 0);
-    s->ti = mktime(&tm);
+    s->ti = mktimegm(&tm);
 
     omap_rtc_alarm_update(s);
     omap_rtc_tick(s);

hw/pl031.c

@@ -206,7 +206,7 @@ void pl031_init(uint32_t base, qemu_irq irq)
     s->irq  = irq;
     /* ??? We assume vm_clock is zero at this point.  */
     qemu_get_timedate(&tm, 0);
-    s->tick_offset = mktime(&tm);
+    s->tick_offset = mktimegm(&tm);
 
     s->timer = qemu_new_timer(vm_clock, pl031_interrupt, s);
 }

hw/pxa2xx.c

@@ -1181,7 +1181,7 @@ static void pxa2xx_rtc_init(struct pxa2xx_state_s *s)
     qemu_get_timedate(&tm, 0);
     wom = ((tm.tm_mday - 1) / 7) + 1;
 
-    s->last_rcnr = (uint32_t) mktime(&tm);
+    s->last_rcnr = (uint32_t) mktimegm(&tm);
     s->last_rdcr = (wom << 20) | ((tm.tm_wday + 1) << 17) |
             (tm.tm_hour << 12) | (tm.tm_min << 6) | tm.tm_sec;
     s->last_rycr = ((tm.tm_year + 1900) << 9) |