1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/** @file
C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
for MbedTLS-based Cryptographic Library (used in DXE & RUNTIME).
Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <CrtLibSupport.h>
//
// -- Time Management Routines --
//
#define IsLeap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
#define SECSPERMIN (60)
#define SECSPERHOUR (60 * 60)
#define SECSPERDAY (24 * SECSPERHOUR)
//
// The arrays give the cumulative number of days up to the first of the
// month number used as the index (1 -> 12) for regular and leap years.
// The value at index 13 is for the whole year.
//
UINTN CumulativeDays[2][14] = {
{
0,
0,
31,
31 + 28,
31 + 28 + 31,
31 + 28 + 31 + 30,
31 + 28 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
},
{
0,
0,
31,
31 + 29,
31 + 29 + 31,
31 + 29 + 31 + 30,
31 + 29 + 31 + 30 + 31,
31 + 29 + 31 + 30 + 31 + 30,
31 + 29 + 31 + 30 + 31 + 30 + 31,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
}
};
/** Get the system time as seconds elapsed since midnight, January 1, 1970. **/
time_t
time (
time_t *timer
)
{
EFI_STATUS Status;
EFI_TIME Time;
time_t CalTime;
UINTN Year;
//
// Get the current time and date information
//
Status = gRT->GetTime (&Time, NULL);
if (EFI_ERROR (Status) || (Time.Year < 1970)) {
return 0;
}
//
// Years Handling
// UTime should now be set to 00:00:00 on Jan 1 of the current year.
//
for (Year = 1970, CalTime = 0; Year != Time.Year; Year++) {
CalTime = CalTime + (time_t)(CumulativeDays[IsLeap (Year)][13] * SECSPERDAY);
}
//
// Add in number of seconds for current Month, Day, Hour, Minute, Seconds, and TimeZone adjustment
//
CalTime = CalTime +
(time_t)((Time.TimeZone != EFI_UNSPECIFIED_TIMEZONE) ? (Time.TimeZone * 60) : 0) +
(time_t)(CumulativeDays[IsLeap (Time.Year)][Time.Month] * SECSPERDAY) +
(time_t)(((Time.Day > 0) ? Time.Day - 1 : 0) * SECSPERDAY) +
(time_t)(Time.Hour * SECSPERHOUR) +
(time_t)(Time.Minute * 60) +
(time_t)Time.Second;
if (timer != NULL) {
*timer = CalTime;
}
return CalTime;
}
/** Convert a time value from type time_t to struct tm. **/
struct tm *
gmtime (
const time_t *timer
)
{
struct tm *GmTime;
UINT16 DayNo;
UINT16 DayRemainder;
time_t Year;
time_t YearNo;
UINT16 TotalDays;
UINT16 MonthNo;
if (timer == NULL) {
return NULL;
}
GmTime = AllocateZeroPool (sizeof (struct tm));
if (GmTime == NULL) {
return NULL;
}
ZeroMem ((VOID *)GmTime, (UINTN)sizeof (struct tm));
DayNo = (UINT16)(*timer / SECSPERDAY);
DayRemainder = (UINT16)(*timer % SECSPERDAY);
GmTime->tm_sec = (int)(DayRemainder % SECSPERMIN);
GmTime->tm_min = (int)((DayRemainder % SECSPERHOUR) / SECSPERMIN);
GmTime->tm_hour = (int)(DayRemainder / SECSPERHOUR);
GmTime->tm_wday = (int)((DayNo + 4) % 7);
for (Year = 1970, YearNo = 0; DayNo > 0; Year++) {
TotalDays = (UINT16)(IsLeap (Year) ? 366 : 365);
if (DayNo >= TotalDays) {
DayNo = (UINT16)(DayNo - TotalDays);
YearNo++;
} else {
break;
}
}
GmTime->tm_year = (int)(YearNo + (1970 - 1900));
GmTime->tm_yday = (int)DayNo;
for (MonthNo = 12; MonthNo > 1; MonthNo--) {
if (DayNo >= CumulativeDays[IsLeap (Year)][MonthNo]) {
DayNo = (UINT16)(DayNo - (UINT16)(CumulativeDays[IsLeap (Year)][MonthNo]));
break;
}
}
GmTime->tm_mon = (int)MonthNo - 1;
GmTime->tm_mday = (int)DayNo + 1;
GmTime->tm_isdst = 0;
GmTime->tm_gmtoff = 0;
GmTime->tm_zone = NULL;
return GmTime;
}
/**_time64 function. **/
time_t
_time64 (
time_t *t
)
{
return time (t);
}
long timezone;
int
gettimeofday (
struct timeval *tv,
struct timezone *tz
)
{
tv->tv_sec = (long)time (NULL);
tv->tv_usec = 0;
return 0;
}
/**sleep function. **/
unsigned int
sleep (
unsigned int seconds
)
{
return 0;
}
|
