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*** empty log message ***
svn path=/trunk/; revision=27
This commit is contained in:
Rex Jolliff
parent
38389db926
commit
f29364e917
2 changed files with 184 additions and 6 deletions
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@ -48,7 +48,9 @@ LDR_OBJECTS = ldr/loader.o
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OBJECTS = $(HAL_OBJECTS) $(KE_OBJECTS) $(RTL_OBJECTS) $(MM_OBJECTS) \
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$(IO_OBJECTS) $(OB_OBJECTS) $(PS_OBJECTS) $(EX_OBJECTS) \
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$(SE_OBJECTS) $(CFG_OBJECTS) $(TST_OBJECTS) $(DBG_OBJECTS)
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LIBS = d:/tools/djgpp/lib/gcc-lib/djgpp/2.81/libgcc.a
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utils/export/export$(EXE_POSTFIX): utils/export/export.c
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$(NATIVE_CC) -g utils/export/export.c -o utils/export/export$(EXE_POSTFIX)
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@ -57,7 +59,7 @@ ke/exports.o: exports.lst utils/export/export$(EXE_POSTFIX)
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$(CC) $(CFLAGS) -c ke/exports.c -o ke/exports.o
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kimage: $(OBJECTS)
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$(LD) --defsym _end=end --defsym _etext=etext --oformat=$(KERNEL_BFD_TARGET) -Ttext c0000000 $(LDFLAGS) $(OBJECTS) -o kimage
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$(LD) --defsym _end=end --defsym _etext=etext --oformat=$(KERNEL_BFD_TARGET) -Ttext c0000000 $(LDFLAGS) $(OBJECTS) $(LIBS) -o kimage
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$(NM) --numeric-sort kimage > kernel.sym
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$(OBJCOPY) -O binary kimage kimage.bin
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@ -2,10 +2,11 @@
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: kernel/rtl/time.c
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* PURPOSE: Graceful system shutdown if a bug is detected
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* PROGRAMMER: David Welch (welch@mcmail.com)
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* PURPOSE: Conversion between Time and TimeFields
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* PROGRAMMER: Rex Jolliff (rex@lvcablemodem.com)
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* UPDATE HISTORY:
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* Created 22/05/98
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* 08/03/98 RJJ Implemented these functions
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*/
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/* INCLUDES *****************************************************************/
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@ -16,16 +17,191 @@
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#include <internal/debug.h>
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#define TICKSPERSEC 10000000
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#define TICKSPERMSEC 10000
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#define SECSPERDAY 86400
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#define SECSPERHOUR 3600
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#define SECSPERMIN 60
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#define MINSPERHOUR 60
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#define HOURSPERDAY 24
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/* FIXME: get the correct day of week for the epoch date */
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#define EPOCHWEEKDAY 0
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#define DAYSPERWEEK 7
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#define EPOCHYEAR 1601
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#define DAYSPERNORMALYEAR 365
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#define DAYSPERLEAPYEAR 366
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#define MONSPERYEAR 12
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static const int YearLengths[2] = {DAYSPERNORMALYEAR, DAYSPERLEAPYEAR};
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static const int MonthLengths[2][MONSPERYEAR] =
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{
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{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
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{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
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};
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static __inline int IsLeapYear(int Year)
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{
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return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0) ? 1 : 0;
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}
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static __inline void NormalizeTimeFields(CSHORT *FieldToNormalize,
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CSHORT *CarryField,
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int Modulus)
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{
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*FieldToNormalize = (CSHORT) (*FieldToNormalize - Modulus);
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*CarryField = (CSHORT) (*CarryField + 1);
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}
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/* FUNCTIONS *****************************************************************/
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VOID RtlTimeToTimeFields(PLARGE_INTEGER Time,
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VOID RtlTimeToTimeFields(PLARGE_INTEGER liTime,
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PTIME_FIELDS TimeFields)
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{
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#if 1
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const int *Months;
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int LeapSecondCorrections, SecondsInDay, CurYear;
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int LeapYear, CurMonth, GMTOffset;
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long int Days;
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long long int Time = *(long long int *)&liTime;
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/* Extract millisecond from time and convert time into seconds */
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TimeFields->Milliseconds = (CSHORT) ((Time % TICKSPERSEC) / TICKSPERMSEC);
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Time = Time / TICKSPERSEC;
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/* FIXME: Compute the number of leap second corrections here */
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LeapSecondCorrections = 0;
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/* FIXME: get the GMT offset here */
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GMTOffset = 0;
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/* Split the time into days and seconds within the day */
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Days = Time / SECSPERDAY;
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SecondsInDay = Time % SECSPERDAY;
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/* Adjust the values for GMT and leap seconds */
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SecondsInDay += (GMTOffset - LeapSecondCorrections);
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while (SecondsInDay < 0)
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{
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SecondsInDay += SECSPERDAY;
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Days--;
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}
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while (SecondsInDay >= SECSPERDAY)
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{
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SecondsInDay -= SECSPERDAY;
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Days++;
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}
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/* compute time of day */
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TimeFields->Hour = (CSHORT) (SecondsInDay / SECSPERHOUR);
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SecondsInDay = SecondsInDay % SECSPERHOUR;
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TimeFields->Minute = (CSHORT) (SecondsInDay / SECSPERMIN);
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TimeFields->Second = (CSHORT) (SecondsInDay % SECSPERMIN);
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/* FIXME: handle the possibility that we are on a leap second (i.e. Second = 60) */
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/* compute day of week */
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TimeFields->Weekday = (CSHORT) ((EPOCHWEEKDAY + Days) % DAYSPERWEEK);
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/* compute year */
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CurYear = EPOCHYEAR;
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/* FIXME: handle calendar modifications */
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while (1)
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{
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LeapYear = IsLeapYear(CurYear);
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if (Days < (long) YearLengths[LeapYear])
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{
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break;
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}
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CurYear++;
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Days = Days - (long) YearLengths[LeapYear];
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}
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TimeFields->Year = (CSHORT) CurYear;
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/* Compute month of year */
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Months = MonthLengths[LeapYear];
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for (CurMonth = 0; Days >= (long) Months[CurMonth]; CurMonth++)
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Days = Days - (long) Months[CurMonth];
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TimeFields->Month = (CSHORT) (CurMonth + 1);
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TimeFields->Day = (CSHORT) (Days + 1);
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#else
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UNIMPLEMENTED;
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#endif
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}
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BOOLEAN RtlTimeFieldsToTime(PTIME_FIELDS TimeFields,
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BOOLEAN RtlTimeFieldsToTime(PTIME_FIELDS tfTimeFields,
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PLARGE_INTEGER Time)
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{
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#if 1
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int CurYear, CurMonth;
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long long int rcTime;
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TIME_FIELDS TimeFields = *tfTimeFields;
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rcTime = 0;
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/* FIXME: normalize the TIME_FIELDS structure here */
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while (TimeFields.Second >= SECSPERMIN)
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{
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NormalizeTimeFields(&TimeFields.Second,
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&TimeFields.Minute,
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SECSPERMIN);
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}
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while (TimeFields.Minute >= MINSPERHOUR)
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{
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NormalizeTimeFields(&TimeFields.Minute,
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&TimeFields.Hour,
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MINSPERHOUR);
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}
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while (TimeFields.Hour >= HOURSPERDAY)
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{
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NormalizeTimeFields(&TimeFields.Hour,
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&TimeFields.Day,
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HOURSPERDAY);
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}
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while (TimeFields.Day >
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MonthLengths[IsLeapYear(TimeFields.Year)][TimeFields.Month - 1])
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{
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NormalizeTimeFields(&TimeFields.Day,
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&TimeFields.Month,
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SECSPERMIN);
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}
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while (TimeFields.Month > MONSPERYEAR)
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{
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NormalizeTimeFields(&TimeFields.Month,
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&TimeFields.Year,
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MONSPERYEAR);
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}
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/* FIXME: handle calendar corrections here */
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for (CurYear = EPOCHYEAR; CurYear < TimeFields.Year; CurYear++)
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{
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rcTime += YearLengths[IsLeapYear(CurYear)];
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}
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for (CurMonth = 1; CurMonth < TimeFields.Month; CurMonth++)
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{
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rcTime += MonthLengths[IsLeapYear(CurYear)][CurMonth - 1];
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}
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rcTime += TimeFields.Day - 1;
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rcTime *= SECSPERDAY;
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rcTime += TimeFields.Hour * SECSPERHOUR + TimeFields.Minute * SECSPERMIN +
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TimeFields.Second;
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rcTime *= TICKSPERSEC;
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rcTime += TimeFields.Milliseconds * TICKSPERMSEC;
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*Time = *(LARGE_INTEGER *)&rcTime;
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return TRUE;
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#else
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UNIMPLEMENTED;
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#endif
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}
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