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-rw-r--r--arm9/asm/DGT_hash2.s2
-rw-r--r--arm9/asm/RTC_convert.s344
-rw-r--r--arm9/lib/include/RTC_convert.h9
-rw-r--r--arm9/lib/src/RTC_convert.c164
4 files changed, 172 insertions, 347 deletions
diff --git a/arm9/asm/DGT_hash2.s b/arm9/asm/DGT_hash2.s
index 1c89ebf9..f309204e 100644
--- a/arm9/asm/DGT_hash2.s
+++ b/arm9/asm/DGT_hash2.s
@@ -10,7 +10,7 @@ Unk_02106A00: ; 0x02106A00
.global Unk_02106A04
Unk_02106A04: ; 0x02106A04
.byte 0x14, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- .byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+ .byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.text
diff --git a/arm9/asm/RTC_convert.s b/arm9/asm/RTC_convert.s
deleted file mode 100644
index 37e8cd0e..00000000
--- a/arm9/asm/RTC_convert.s
+++ /dev/null
@@ -1,344 +0,0 @@
- .include "asm/macros.inc"
- .include "global.inc"
-
- .extern UNK_02106A1C
- .extern UNK_02106A20
-
- .section .data
-
- .global UNK_02106A1C
-UNK_02106A1C: ; 0x02106A1C
- .word 0
-
- .global UNK_02106A20
-UNK_02106A20: ; 0x02106A20
- .word 0 ; Jan
- .word 31 ; Feb
- .word 59 ; Mar
- .word 90 ; Apr
- .word 120 ; May
- .word 151 ; Jun
- .word 181 ; Jul
- .word 212 ; Aug
- .word 243 ; Sep
- .word 273 ; Oct
- .word 304 ; Nov
- .word 334 ; Dec
-
- .text
-
- arm_func_start RTC_GetDayOfWeek
-RTC_GetDayOfWeek: ; 0x020D6248
- stmdb sp!, {r4-r6,lr}
- ldr r1, [r0, #0x4]
- ldr r2, [r0, #0x0]
- sub r3, r1, #0x2
- cmp r3, #0x1
- add lr, r2, #0x7d0
- ldr r4, _020D630C ; =0x51EB851F
- sublt lr, lr, #0x1
- ldr r12, [r0, #0x8]
- smull r0, r2, r4, lr
- addlt r3, r3, #0xc
- mov r1, #0x1a
- mul r0, r3, r1
- smull r1, r3, r4, lr
- ldr r5, _020D6310 ; =0x66666667
- sub r0, r0, #0x2
- smull r4, r1, r5, r0
- mov r4, lr, lsr #0x1f
- mov r2, r2, asr #0x5
- mov r3, r3, asr #0x5
- add r3, r4, r3
- ldr r5, _020D6314 ; =0x00000064
- add r2, r4, r2
- smull r2, r4, r5, r2
- sub r2, lr, r2
- mov r1, r1, asr #0x2
- mov r0, r0, lsr #0x1f
- add r1, r0, r1
- mov r4, r2, asr #0x1
- add r0, r12, r1
- add r1, r2, r4, lsr #0x1e
- add r2, r2, r0
- mov r6, r3, asr #0x1
- add r0, r3, r6, lsr #0x1e
- add r1, r2, r1, asr #0x2
- add r1, r1, r0, asr #0x2
- mov r0, #0x5
- mla r4, r3, r0, r1
- ldr r3, _020D6318 ; =0x92492493
- mov r1, r4, lsr #0x1f
- smull r2, r0, r3, r4
- add r0, r4, r0
- mov r0, r0, asr #0x2
- ldr r2, _020D631C ; =0x00000007
- add r0, r1, r0
- smull r0, r1, r2, r0
- sub r0, r4, r0
- ldmia sp!, {r4-r6,lr}
- bx lr
- .balign 4
-_020D630C: .word 0x51EB851F
-_020D6310: .word 0x66666667
-_020D6314: .word 0x00000064
-_020D6318: .word 0x92492493
-_020D631C: .word 0x00000007
-
- arm_func_start RTC_ConvertSecondToDateTime
-RTC_ConvertSecondToDateTime: ; 0x020D6320
- stmdb sp!, {r4-r7,lr}
- sub sp, sp, #0x4
- mov r5, r2
- mov r12, #0x0
- mov r4, r3
- subs r2, r5, r12
- sbcs r2, r4, r12
- mov r7, r0
- mov r6, r1
- movlt r5, r12
- movlt r4, r12
- blt _020D6364
- ldr r1, _020D63B0 ; =0xBC19137F
- subs r0, r1, r5
- sbcs r0, r12, r4
- movlt r5, r1
- movlt r4, r12
-_020D6364:
- ldr r2, _020D63B4 ; =0x00015180
- mov r0, r5
- mov r1, r4
- mov r3, #0x0
- bl _ll_mod
- mov r1, r0
- mov r0, r6
- bl RTCi_ConvertSecondToTime
- ldr r2, _020D63B4 ; =0x00015180
- mov r0, r5
- mov r1, r4
- mov r3, #0x0
- bl _ll_sdiv
- mov r1, r0
- mov r0, r7
- bl RTC_ConvertDayToDate
- add sp, sp, #0x4
- ldmia sp!, {r4-r7,lr}
- bx lr
- .balign 4
-_020D63B0: .word 0xBC19137F
-_020D63B4: .word 0x00015180
-
- arm_func_start RTCi_ConvertSecondToTime
-RTCi_ConvertSecondToTime: ; 0x020D63B8
- stmdb sp!, {r4-r6,lr}
- ldr r2, _020D6448 ; =0x0001517F
- cmp r1, #0x0
- movlt r1, #0x0
- cmp r1, r2
- ldr ip, _020D644C ; =0x88888889
- movgt r1, r2
- smull r2, r3, r12, r1
- smull r2, lr, r12, r1
- ldr r5, _020D6450 ; =0x91A2B3C5
- add r3, r1, r3
- smull r4, r2, r5, r1
- mov r5, r1, lsr #0x1f
- mov r3, r3, asr #0x5
- add r3, r5, r3
- smull r4, r6, r12, r3
- add lr, r1, lr
- mov lr, lr, asr #0x5
- add r6, r3, r6
- add r2, r1, r2
- ldr r4, _020D6454 ; =0x0000003C
- add lr, r5, lr
- smull r12, lr, r4, lr
- sub lr, r1, r12
- mov r2, r2, asr #0xb
- mov r6, r6, asr #0x5
- mov r1, r3, lsr #0x1f
- add r6, r1, r6
- smull r1, r12, r4, r6
- str lr, [r0, #0x8]
- sub r6, r3, r1
- str r6, [r0, #0x4]
- add r2, r5, r2
- str r2, [r0, #0x0]
- ldmia sp!, {r4-r6,lr}
- bx lr
- .balign 4
-_020D6448: .word 0x0001517F
-_020D644C: .word 0x88888889
-_020D6450: .word 0x91A2B3C5
-_020D6454: .word 0x0000003C
-
- arm_func_start RTC_ConvertDayToDate
-RTC_ConvertDayToDate: ; 0x020D6458
- stmdb sp!, {r4,lr}
- ldr r2, _020D6560 ; =0x00008EAC
- cmp r1, #0x0
- movlt r1, #0x0
- cmp r1, r2
- movgt r1, r2
- ldr r3, _020D6564 ; =0x92492493
- add lr, r1, #0x6
- smull r2, r4, r3, lr
- add r4, lr, r4
- mov r4, r4, asr #0x2
- mov r2, lr, lsr #0x1f
- ldr ip, _020D6568 ; =0x00000007
- add r4, r2, r4
- smull r2, r3, r12, r4
- sub r4, lr, r2
- ldr r2, _020D656C ; =0x0000016D
- ldr r3, _020D6570 ; =0x0000016E
- str r4, [r0, #0xc]
- mov lr, #0x0
-_020D64A8:
- ands r12, lr, #0x3
- moveq r12, r3
- movne r12, r2
- mov r4, r1
- subs r1, r1, r12
- movmi r1, r4
- bmi _020D64D0
- add lr, lr, #0x1
- cmp lr, #0x63
- blo _020D64A8
-_020D64D0:
- ldr r2, _020D656C ; =0x0000016D
- str lr, [r0, #0x0]
- cmp r1, r2
- movgt r1, r2
- ands r2, lr, #0x3
- bne _020D6518
- cmp r1, #0x3c
- bge _020D6514
- cmp r1, #0x1f
- movlt r2, #0x1
- subge r1, r1, #0x1f
- movge r2, #0x2
- str r2, [r0, #0x4]
- add r1, r1, #0x1
- str r1, [r0, #0x8]
- ldmia sp!, {r4,lr}
- bx lr
-_020D6514:
- sub r1, r1, #0x1
-_020D6518:
- ldr r3, _020D6574 ; =UNK_02106A20
- mov r4, #0xb
-_020D6520:
- ldr r2, [r3, r4, lsl #0x2]
- mov r12, r4, lsl #0x2
- cmp r1, r2
- blt _020D6550
- add r2, r4, #0x1
- str r2, [r0, #0x4]
- ldr r2, [r3, r12]
- sub r1, r1, r2
- add r1, r1, #0x1
- str r1, [r0, #0x8]
- ldmia sp!, {r4,lr}
- bx lr
-_020D6550:
- subs r4, r4, #0x1
- bpl _020D6520
- ldmia sp!, {r4,lr}
- bx lr
- .balign 4
-_020D6560: .word 0x00008EAC
-_020D6564: .word 0x92492493
-_020D6568: .word 0x00000007
-_020D656C: .word 0x0000016D
-_020D6570: .word 0x0000016E
-_020D6574: .word UNK_02106A20
-
- arm_func_start RTC_ConvertDateTimeToSecond
-RTC_ConvertDateTimeToSecond: ; 0x020D6578
- stmdb sp!, {r4-r5,lr}
- sub sp, sp, #0x4
- mov r5, r1
- bl RTC_ConvertDateToDay
- mov r4, r0
- mvn r0, #0x0
- cmp r4, r0
- addeq sp, sp, #0x4
- moveq r1, r0
- ldmeqia sp!, {r4-r5,lr}
- bxeq lr
- mov r0, r5
- bl RTCi_ConvertTimeToSecond
- mvn r2, #0x0
- cmp r0, r2
- moveq r1, r2
- beq _020D65DC
- ldr r1, _020D65EC ; =0x00015180
- mov r2, #0x0
- umull r12, r3, r4, r1
- mla r3, r4, r2, r3
- mov r2, r4, asr #0x1f
- mla r3, r2, r1, r3
- adds r2, r0, r12
- adc r1, r3, r0, asr #0x1f
-_020D65DC:
- mov r0, r2
- add sp, sp, #0x4
- ldmia sp!, {r4-r5,lr}
- bx lr
- .balign 4
-_020D65EC: .word 0x00015180
-
- arm_func_start RTCi_ConvertTimeToSecond
-RTCi_ConvertTimeToSecond: ; 0x020D65F0
- ldr r3, [r0, #0x4]
- ldr r2, [r0, #0x0]
- mov r1, #0x3c
- mla r3, r2, r1, r3
- ldr r0, [r0, #0x8]
- mla r0, r3, r1, r0
- bx lr
-
- arm_func_start RTC_ConvertDateToDay
-RTC_ConvertDateToDay: ; 0x020D660C
- ldr r3, [r0, #0x0]
- cmp r3, #0x64
- bhs _020D665C
- ldr r2, [r0, #0x4]
- cmp r2, #0x1
- blo _020D665C
- cmp r2, #0xc
- bhi _020D665C
- ldr r1, [r0, #0x8]
- cmp r1, #0x1
- blo _020D665C
- cmp r1, #0x1f
- bhi _020D665C
- ldr r0, [r0, #0xc]
- cmp r0, #0x7
- bge _020D665C
- cmp r2, #0x1
- blo _020D665C
- cmp r2, #0xc
- bls _020D6664
-_020D665C:
- mvn r0, #0x0
- bx lr
-_020D6664:
- ldr r0, _020D6698 ; =UNK_02106A1C
- sub r1, r1, #0x1
- ldr r0, [r0, r2, lsl #0x2]
- cmp r2, #0x3
- add r2, r1, r0
- blo _020D6684
- ands r0, r3, #0x3
- addeq r2, r2, #0x1
-_020D6684:
- ldr r0, _020D669C ; =0x0000016D
- add r1, r3, #0x3
- mla r0, r3, r0, r2
- add r0, r0, r1, lsr #0x2
- bx lr
- .balign 4
-_020D6698: .word UNK_02106A1C
-_020D669C: .word 0x0000016D
diff --git a/arm9/lib/include/RTC_convert.h b/arm9/lib/include/RTC_convert.h
index 255ebf73..a75928b9 100644
--- a/arm9/lib/include/RTC_convert.h
+++ b/arm9/lib/include/RTC_convert.h
@@ -1,7 +1,12 @@
#ifndef NITRO_RTC_CONVERT_H_
#define NITRO_RTC_CONVERT_H_
-s32 RTC_ConvertDateToDay(RTCDate *);
-s64 RTC_ConvertDateTimeToSecond(RTCDate *, RTCTime *);
+s32 RTC_ConvertDateToDay(const RTCDate * date);
+s32 RTCi_ConvertTimeToSecond(const RTCTime * time);
+s64 RTC_ConvertDateTimeToSecond(const RTCDate * date, const RTCTime * time);
+void RTC_ConvertDayToDate(RTCDate * date, s32 day);
+void RTCi_ConvertSecondToTime(RTCTime * time, s32 sec);
+void RTC_ConvertSecondToDateTime(RTCDate * date, RTCTime * time, s64 sec);
+RTCWeek RTC_GetDayOfWeek(RTCDate * date);
#endif //NITRO_RTC_CONVERT_H_
diff --git a/arm9/lib/src/RTC_convert.c b/arm9/lib/src/RTC_convert.c
new file mode 100644
index 00000000..af5574dc
--- /dev/null
+++ b/arm9/lib/src/RTC_convert.c
@@ -0,0 +1,164 @@
+#include "global.h"
+#include "RTC_api.h"
+#include "RTC_convert.h"
+
+static s32 sDayOfYear[12] = {
+ 0, // Jan
+ 31, // Feb
+ 59, // Mar
+ 90, // Apr
+ 120, // May
+ 151, // Jun
+ 181, // Jul
+ 212, // Aug
+ 243, // Sep
+ 273, // Oct
+ 304, // Nov
+ 334, // Dec
+};
+
+static inline BOOL RTCi_IsLeapYear(u32 year)
+{
+ return !((year & 0x03));
+}
+
+s32 RTC_ConvertDateToDay(const RTCDate * date)
+{
+ if (date->year >= 100
+ || date->month < 1
+ || date->month > 12
+ || date->day < 1
+ || date->day > 31
+ || date->week >= RTC_WEEK_MAX
+ || date->month < 1 // can't be
+ || date->month > 12 // too sure
+ )
+ return -1;
+ s32 dayNum = (s32)(date->day - 1);
+ dayNum += sDayOfYear[date->month - 1];
+ if (date->month >= 3 && RTCi_IsLeapYear(date->year))
+ dayNum++;
+ dayNum += date->year * 365;
+ dayNum += (date->year + 3) / 4;
+ return dayNum;
+}
+
+s32 RTCi_ConvertTimeToSecond(const RTCTime * time)
+{
+ return (time->hour * 60 + time->minute) * 60 + time->second;
+}
+
+s64 RTC_ConvertDateTimeToSecond(const RTCDate * date, const RTCTime * time)
+{
+ s32 day = RTC_ConvertDateToDay(date);
+ if (day == -1)
+ return -1;
+ s32 second = RTCi_ConvertTimeToSecond(time);
+ if (second == -1)
+ return -1;
+ return ((s64)day) * (60 * 60 * 24) + second;
+}
+
+void RTC_ConvertDayToDate(RTCDate * date, s32 day)
+{
+ u32 year;
+ s32 month;
+
+ if (day < 0)
+ {
+ day = 0;
+ }
+ if (day > 36524) // max number of days that can be recorded
+ {
+ day = 36524;
+ }
+ date->week = (RTCWeek)((day + 6) % 7);
+ for (year = 0; year < 99; year++)
+ {
+ s32 prev = day;
+ day -= (RTCi_IsLeapYear(year)) ? 366 : 365;
+ if (day < 0)
+ {
+ day = prev;
+ break;
+ }
+ }
+ if (day > 365)
+ {
+ day = 365;
+ }
+ date->year = year;
+ if (RTCi_IsLeapYear(year))
+ {
+ if (day < 31 + 29)
+ {
+ if (day < 31)
+ {
+ month = 1;
+ }
+ else
+ {
+ month = 2;
+ day -= 31;
+ }
+ date->month = (u32)month;
+ date->day = (u32)(day + 1);
+ return;
+ }
+ else
+ {
+ day--;
+ }
+ }
+ for (month = 11; month >= 0; month--)
+ {
+ if (day >= sDayOfYear[month])
+ {
+ date->month = (u32)(month + 1);
+ date->day = (u32)(day - sDayOfYear[month] + 1);
+ return;
+ }
+ }
+ // Internal Error.
+}
+
+void RTCi_ConvertSecondToTime(RTCTime * time, s32 sec)
+{
+ if (sec < 0)
+ sec = 0;
+ if (sec > 86399)
+ sec = 86399;
+ time->second = (u32)(sec % 60);
+ sec /= 60;
+ time->minute = (u32)(sec % 60);
+ sec /= 60;
+ time->hour = (u32)sec;
+}
+
+void RTC_ConvertSecondToDateTime(RTCDate * date, RTCTime * time, s64 sec)
+{
+ if (sec < 0)
+ sec = 0;
+ else if (sec > 3155759999)
+ sec = 3155759999;
+ RTCi_ConvertSecondToTime(time, (s32)(sec % 86400));
+ RTC_ConvertDayToDate(date, (s32)(sec / 86400));
+}
+
+RTCWeek RTC_GetDayOfWeek(RTCDate * date)
+{
+ int cent;
+ int year = (int)(2000 + date->year);
+ int month = (int)date->month;
+ int day = (int)date->day;
+
+ month -= 2;
+ if (month < 1)
+ {
+ month += 12;
+ --year;
+ }
+ cent = year / 100;
+ year %= 100;
+ return (RTCWeek)(((26 * month - 2) / 10 + day + year + year / 4 + cent / 4 + 5 * cent) % 7);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-05 17:34:10 +0000