split out RTC functions

2 files changed, 825 insertions, 824 deletions

diff --git a/asm/emerald.s b/asm/emerald.s
index 94d6deb78..5436af3c1 100644
--- a/asm/emerald.s
+++ b/asm/emerald.s
@@ -75805,830 +75805,7 @@ sub_802EFFC: ; 802EFFC
 	.pool
 	thumb_func_end sub_802EFFC
 
-	thumb_func_start GameFreakRTC_ClearIME
-; void GameFreakRTC_ClearIME()
-GameFreakRTC_ClearIME: ; 802F0CC
-	ldr r2, =0x03000dce
-	ldr r1, =0x04000208
-	ldrh r0, [r1]
-	strh r0, [r2]
-	movs r0, 0
-	strh r0, [r1]
-	bx lr
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_ClearIME
-
-	thumb_func_start GameFreakRTC_RestoreIME
-; void GameFreakRTC_RestoreIME()
-GameFreakRTC_RestoreIME: ; 802F0E4
-	ldr r0, =0x04000208
-	ldr r1, =0x03000dce
-	ldrh r1, [r1]
-	strh r1, [r0]
-	bx lr
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_RestoreIME
-
-	thumb_func_start GameFreakRTC_ConvertFromBCD
-; u8 GameFreakRTC_ConvertFromBCD(u8 bcdByte)
-GameFreakRTC_ConvertFromBCD: ; 802F0F8
-	push {lr}
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0x9F
-	bhi @0802F10A
-	movs r3, 0xF
-	ands r3, r2
-	cmp r3, 0x9
-	bls @0802F10E
-@0802F10A:
-	movs r0, 0xFF
-	b @0802F11C
-@0802F10E:
-	lsrs r1, r0, 28
-	movs r0, 0xF
-	ands r1, r0
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 1
-	adds r0, r3
-@0802F11C:
-	pop {r1}
-	bx r1
-	thumb_func_end GameFreakRTC_ConvertFromBCD
-
-	thumb_func_start GameFreakRTC_IsLeapYear
-; BOOL GameFreakRTC_IsLeapYear(u32 year)
-GameFreakRTC_IsLeapYear: ; 802F120
-	push {r4,lr}
-	adds r4, r0, 0
-	movs r0, 0x3
-	ands r0, r4
-	cmp r0, 0
-	bne @0802F138
-	adds r0, r4, 0
-	movs r1, 0x64
-	bl __umodsi3
-	cmp r0, 0
-	bne @0802F146
-@0802F138:
-	movs r1, 0xC8
-	lsls r1, 1
-	adds r0, r4, 0
-	bl __umodsi3
-	cmp r0, 0
-	bne @0802F14A
-@0802F146:
-	movs r0, 0x1
-	b @0802F14C
-@0802F14A:
-	movs r0, 0
-@0802F14C:
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end GameFreakRTC_IsLeapYear
-
-	thumb_func_start GameFreakRTC_ConvertYearMonthDayToNumDays
-; u16 GameFreakRTC_ConvertYearMonthDayToNumDays(u8 year, u8 month, u8 dayOfMonth)
-GameFreakRTC_ConvertYearMonthDayToNumDays: ; 802F154
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	lsls r0, 24
-	lsrs r7, r0, 24
-	lsls r1, 24
-	lsrs r6, r1, 24
-	lsls r2, 24
-	lsrs r2, 24
-	mov r8, r2
-	movs r5, 0
-	subs r4, r7, 0x1
-	cmp r4, 0
-	blt @0802F192
-@0802F170:
-	ldr r1, =0x0000016d
-	adds r0, r5, r1
-	lsls r0, 16
-	lsrs r5, r0, 16
-	adds r0, r4, 0
-	bl GameFreakRTC_IsLeapYear
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne @0802F18C
-	adds r0, r5, 0x1
-	lsls r0, 16
-	lsrs r5, r0, 16
-@0802F18C:
-	subs r4, 0x1
-	cmp r4, 0
-	bge @0802F170
-@0802F192:
-	subs r0, r6, 0x1
-	cmp r0, 0
-	ble @0802F1AA
-	ldr r1, =gUnknown_082FECCC
-	adds r4, r0, 0
-@0802F19C:
-	ldm r1!, {r0}
-	adds r0, r5, r0
-	lsls r0, 16
-	lsrs r5, r0, 16
-	subs r4, 0x1
-	cmp r4, 0
-	bne @0802F19C
-@0802F1AA:
-	cmp r6, 0x2
-	bls @0802F1C2
-	adds r0, r7, 0
-	bl GameFreakRTC_IsLeapYear
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne @0802F1C2
-	adds r0, r5, 0x1
-	lsls r0, 16
-	lsrs r5, r0, 16
-@0802F1C2:
-	mov r1, r8
-	adds r0, r5, r1
-	lsls r0, 16
-	lsrs r5, r0, 16
-	adds r0, r5, 0
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_ConvertYearMonthDayToNumDays
-
-	thumb_func_start GameFreakRTC_GetNumDaysInternal
-; u16 GameFreakRTC_GetNumDaysInternal(struct RtcInfo *rtc)
-GameFreakRTC_GetNumDaysInternal: ; 802F1E0
-	push {r4-r6,lr}
-	adds r6, r0, 0
-	ldrb r0, [r6]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r5, r0, 0
-	lsls r5, 24
-	lsrs r5, 24
-	ldrb r0, [r6, 0x1]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	ldrb r0, [r6, 0x2]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r2, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	adds r0, r5, 0
-	adds r1, r4, 0
-	bl GameFreakRTC_ConvertYearMonthDayToNumDays
-	lsls r0, 16
-	lsrs r0, 16
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end GameFreakRTC_GetNumDaysInternal
-
-	thumb_func_start GameFreakRTC_Init
-; void GameFreakRTC_Init()
-GameFreakRTC_Init: ; 802F21C
-	push {r4,r5,lr}
-	ldr r5, =0x03000db8
-	movs r0, 0
-	strh r0, [r5]
-	bl GameFreakRTC_ClearIME
-	bl RTC_SetReadWrite
-	bl RTC_Init
-	ldr r4, =0x03000dcc
-	strb r0, [r4]
-	bl GameFreakRTC_RestoreIME
-	ldrb r4, [r4]
-	movs r0, 0xF
-	ands r0, r4
-	cmp r0, 0x1
-	beq @0802F250
-	movs r0, 0x1
-	strh r0, [r5]
-	b @0802F26E
-	.align 2, 0
-	.pool
-@0802F250:
-	movs r0, 0xF0
-	ands r0, r4
-	cmp r0, 0
-	beq @0802F25A
-	movs r0, 0x2
-@0802F25A:
-	strh r0, [r5]
-	ldr r4, =0x03000dc0
-	adds r0, r4, 0
-	bl GameFreakRTC_GetControlRegAndRTCDateTime
-	adds r0, r4, 0
-	bl GameFreakRTC_TestForErrors
-	ldr r1, =0x03000db8
-	strh r0, [r1]
-@0802F26E:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_Init
-
-	thumb_func_start GameFreakRTC_GetErrorFlags
-; u16 GameFreakRTC_GetErrorFlags()
-GameFreakRTC_GetErrorFlags: ; 802F27C
-	ldr r0, =0x03000db8
-	ldrh r0, [r0]
-	bx lr
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_GetErrorFlags
-
-	thumb_func_start GameFreakRTC_GetRTCDateTime
-; void GameFreakRTC_GetRTCDateTime(struct RtcInfo *rtc)
-GameFreakRTC_GetRTCDateTime: ; 802F288
-	push {r4,lr}
-	adds r2, r0, 0
-	ldr r0, =0x03000db8
-	ldrh r1, [r0]
-	movs r0, 0xFF
-	lsls r0, 4
-	ands r0, r1
-	cmp r0, 0
-	beq @0802F2AC
-	adds r1, r2, 0
-	ldr r0, =gUnknown_082FECC0
-	ldm r0!, {r2-r4}
-	stm r1!, {r2-r4}
-	b @0802F2B2
-	.align 2, 0
-	.pool
-@0802F2AC:
-	adds r0, r2, 0
-	bl GameFreakRTC_GetControlRegAndRTCDateTime
-@0802F2B2:
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_GetRTCDateTime
-
-	thumb_func_start GameFreakRTC_GetRTCDateTimeInternal
-; void GameFreakRTC_GetRTCDateTimeInternal(struct RtcInfo *rtc)
-GameFreakRTC_GetRTCDateTimeInternal: ; 802F2B8
-	push {r4,lr}
-	adds r4, r0, 0
-	bl GameFreakRTC_ClearIME
-	adds r0, r4, 0
-	bl RTC_GetDateTime
-	bl GameFreakRTC_RestoreIME
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_GetRTCDateTimeInternal
-
-	thumb_func_start GameFreakRTC_GetControlReg
-; void GameFreakRTC_GetControlReg(struct RtcInfo *rtc)
-GameFreakRTC_GetControlReg: ; 802F2D0
-	push {r4,lr}
-	adds r4, r0, 0
-	bl GameFreakRTC_ClearIME
-	adds r0, r4, 0
-	bl RTC_GetControlReg
-	bl GameFreakRTC_RestoreIME
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_GetControlReg
-
-	thumb_func_start GameFreakRTC_GetControlRegAndRTCDateTime
-; void GameFreakRTC_GetControlRegAndRTCDateTime(struct RtcInfo *rtc)
-GameFreakRTC_GetControlRegAndRTCDateTime: ; 802F2E8
-	push {r4,lr}
-	adds r4, r0, 0
-	bl GameFreakRTC_GetControlReg
-	adds r0, r4, 0
-	bl GameFreakRTC_GetRTCDateTimeInternal
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_GetControlRegAndRTCDateTime
-
-	thumb_func_start GameFreakRTC_TestForErrors
-; u16 GameFreakRTC_TestForErrors(struct RtcInfo *rtc)
-GameFreakRTC_TestForErrors: ; 802F2FC
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r7, r0, 0
-	ldrb r1, [r7, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	lsls r0, 24
-	lsrs r0, 24
-	negs r0, r0
-	asrs r4, r0, 31
-	movs r0, 0x20
-	ands r4, r0
-	movs r0, 0x40
-	ands r0, r1
-	cmp r0, 0
-	bne @0802F322
-	movs r0, 0x10
-	orrs r4, r0
-@0802F322:
-	ldrb r0, [r7]
-	bl GameFreakRTC_ConvertFromBCD
-	mov r8, r0
-	cmp r0, 0xFF
-	bne @0802F336
-	movs r0, 0x40
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F336:
-	ldrb r0, [r7, 0x1]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r6, r0, 0
-	cmp r6, 0xFF
-	beq @0802F34A
-	cmp r6, 0
-	beq @0802F34A
-	cmp r6, 0xC
-	ble @0802F352
-@0802F34A:
-	movs r0, 0x80
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F352:
-	ldrb r0, [r7, 0x2]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r5, r0, 0
-	cmp r5, 0xFF
-	bne @0802F36A
-	movs r1, 0x80
-	lsls r1, 1
-	adds r0, r1, 0
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F36A:
-	cmp r6, 0x2
-	bne @0802F384
-	mov r0, r8
-	bl GameFreakRTC_IsLeapYear
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r1, =gUnknown_082FECCC
-	ldr r1, [r1, 0x4]
-	adds r0, r1
-	b @0802F38E
-	.align 2, 0
-	.pool
-@0802F384:
-	ldr r0, =gUnknown_082FECCC
-	subs r1, r6, 0x1
-	lsls r1, 2
-	adds r1, r0
-	ldr r0, [r1]
-@0802F38E:
-	cmp r5, r0
-	ble @0802F39E
-	movs r1, 0x80
-	lsls r1, 1
-	adds r0, r1, 0
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F39E:
-	ldrb r0, [r7, 0x4]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r5, r0, 0
-	cmp r5, 0x18
-	ble @0802F3B6
-	movs r1, 0x80
-	lsls r1, 2
-	adds r0, r1, 0
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F3B6:
-	ldrb r0, [r7, 0x5]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r5, r0, 0
-	cmp r5, 0x3C
-	ble @0802F3CE
-	movs r1, 0x80
-	lsls r1, 3
-	adds r0, r1, 0
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F3CE:
-	ldrb r0, [r7, 0x6]
-	bl GameFreakRTC_ConvertFromBCD
-	adds r5, r0, 0
-	cmp r5, 0x3C
-	ble @0802F3E6
-	movs r1, 0x80
-	lsls r1, 4
-	adds r0, r1, 0
-	orrs r4, r0
-	lsls r0, r4, 16
-	lsrs r4, r0, 16
-@0802F3E6:
-	adds r0, r4, 0
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_TestForErrors
-
-	thumb_func_start GameFreakRTC_Reset
-; void GameFreakRTC_Reset()
-GameFreakRTC_Reset: ; 802F3F8
-	push {lr}
-	bl GameFreakRTC_ClearIME
-	bl RTC_Reset
-	bl GameFreakRTC_RestoreIME
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_Reset
-
-	thumb_func_start GameFreakRTC_FormatDecimalTimeString
-; void GameFreakRTC_FormatDecimalTimeString(u8 *dest, s32 hour, s32 minute, s32 second)
-GameFreakRTC_FormatDecimalTimeString: ; 802F40C
-	push {r4-r6,lr}
-	adds r5, r2, 0
-	adds r6, r3, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToDecimalString
-	movs r4, 0xF0
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r5, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToDecimalString
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r6, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToDecimalString
-	movs r1, 0xFF
-	strb r1, [r0]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_FormatDecimalTimeString
-
-	thumb_func_start GameFreakRTC_FormatHexTimeString
-; void GameFreakRTC_FormatHexTimeString(u8 *dest, s32 hour, s32 minute, s32 second)
-GameFreakRTC_FormatHexTimeString: ; 802F444
-	push {r4-r6,lr}
-	adds r5, r2, 0
-	adds r6, r3, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToHexString
-	movs r4, 0xF0
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r5, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToHexString
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r6, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToHexString
-	movs r1, 0xFF
-	strb r1, [r0]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_FormatHexTimeString
-
-	thumb_func_start GameFreakRTC_FormatHexTimeStringFromRtcInfo
-; void GameFreakRTC_FormatHexTimeStringFromRtcInfo()
-GameFreakRTC_FormatHexTimeStringFromRtcInfo: ; 802F47C
-	push {lr}
-	ldr r3, =0x03000dc0
-	ldrb r1, [r3, 0x4]
-	ldrb r2, [r3, 0x5]
-	ldrb r3, [r3, 0x6]
-	bl GameFreakRTC_FormatHexTimeString
-	pop {r0}
-	bx r0
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_FormatHexTimeStringFromRtcInfo
-
-	thumb_func_start GameFreakRTC_FormatDecimalYearMonthDayString
-; void GameFreakRTC_FormatDecimalYearMonthDayString(u8 *dest, s32 year, s32 month, s32 dayOfMonth)
-GameFreakRTC_FormatDecimalYearMonthDayString: ; 802F494
-	push {r4-r6,lr}
-	adds r5, r2, 0
-	adds r6, r3, 0
-	movs r2, 0x2
-	movs r3, 0x4
-	bl ConvertIntToDecimalString
-	movs r4, 0xAE
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r5, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToDecimalString
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r6, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToDecimalString
-	movs r1, 0xFF
-	strb r1, [r0]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_FormatDecimalYearMonthDayString
-
-	thumb_func_start GameFreakRTC_FormatHexYearMonthDayString
-; void GameFreakRTC_FormatHexYearMonthDayString(u8 *dest, s32 year, s32 month, s32 dayOfMonth)
-GameFreakRTC_FormatHexYearMonthDayString: ; 802F4CC
-	push {r4-r6,lr}
-	adds r5, r2, 0
-	adds r6, r3, 0
-	movs r2, 0x2
-	movs r3, 0x4
-	bl ConvertIntToHexString
-	movs r4, 0xAE
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r5, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToHexString
-	strb r4, [r0]
-	adds r0, 0x1
-	adds r1, r6, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToHexString
-	movs r1, 0xFF
-	strb r1, [r0]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_FormatHexYearMonthDayString
-
-	thumb_func_start GameFreakRTC_GetRTCDelta
-; void GameFreakRTC_GetRTCDelta(RtcInfo *rtc, GameDateTime *delta, GameDateTime *dateTime)
-GameFreakRTC_GetRTCDelta: ; 802F504
-	push {r4-r7,lr}
-	adds r5, r0, 0
-	adds r7, r1, 0
-	adds r6, r2, 0
-	bl GameFreakRTC_GetNumDaysInternal
-	adds r4, r0, 0
-	lsls r4, 16
-	lsrs r4, 16
-	ldrb r0, [r5, 0x6]
-	bl GameFreakRTC_ConvertFromBCD
-	ldrb r1, [r6, 0x4]
-	subs r0, r1
-	strb r0, [r7, 0x4]
-	ldrb r0, [r5, 0x5]
-	bl GameFreakRTC_ConvertFromBCD
-	ldrb r1, [r6, 0x3]
-	subs r0, r1
-	strb r0, [r7, 0x3]
-	ldrb r0, [r5, 0x4]
-	bl GameFreakRTC_ConvertFromBCD
-	ldrb r1, [r6, 0x2]
-	subs r0, r1
-	strb r0, [r7, 0x2]
-	ldrh r0, [r6]
-	subs r4, r0
-	strh r4, [r7]
-	ldrb r1, [r7, 0x4]
-	movs r0, 0x4
-	ldrsb r0, [r7, r0]
-	cmp r0, 0
-	bge @0802F556
-	adds r0, r1, 0
-	adds r0, 0x3C
-	strb r0, [r7, 0x4]
-	ldrb r0, [r7, 0x3]
-	subs r0, 0x1
-	strb r0, [r7, 0x3]
-@0802F556:
-	ldrb r1, [r7, 0x3]
-	movs r0, 0x3
-	ldrsb r0, [r7, r0]
-	cmp r0, 0
-	bge @0802F56C
-	adds r0, r1, 0
-	adds r0, 0x3C
-	strb r0, [r7, 0x3]
-	ldrb r0, [r7, 0x2]
-	subs r0, 0x1
-	strb r0, [r7, 0x2]
-@0802F56C:
-	ldrb r1, [r7, 0x2]
-	movs r0, 0x2
-	ldrsb r0, [r7, r0]
-	cmp r0, 0
-	bge @0802F582
-	adds r0, r1, 0
-	adds r0, 0x18
-	strb r0, [r7, 0x2]
-	ldrh r0, [r7]
-	subs r0, 0x1
-	strh r0, [r7]
-@0802F582:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_GetRTCDelta
-
-	thumb_func_start GameFreakRTC_CalcLocalDateTime
-; void GameFreakRTC_CalcLocalDateTime()
-GameFreakRTC_CalcLocalDateTime: ; 802F588
-	push {r4,lr}
-	ldr r4, =0x03000dc0
-	adds r0, r4, 0
-	bl GameFreakRTC_GetRTCDateTime
-	ldr r1, =0x03005cf8
-	ldr r0, =0x03005d90
-	ldr r2, [r0]
-	adds r2, 0x98
-	adds r0, r4, 0
-	bl GameFreakRTC_GetRTCDelta
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_CalcLocalDateTime
-
-	thumb_func_start GameFreakRTC_CalcRTCToLocalDelta_DayZero
-; void GameFreakRTC_CalcRTCToLocalDelta_DayZero(u8 hour, u8 minute)
-GameFreakRTC_CalcRTCToLocalDelta_DayZero: ; 802F5B4
-	push {lr}
-	adds r3, r0, 0
-	adds r2, r1, 0
-	movs r0, 0
-	adds r1, r3, 0
-	movs r3, 0
-	bl GameFreakRTC_CalcRTCToLocalDelta
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_CalcRTCToLocalDelta_DayZero
-
-	thumb_func_start GameFreakRTC_CalcRTCToLocalDelta
-; void GameFreakRTC_CalcRTCToLocalDelta(u16 numDays, u8 hour, u8 minute, u8 second)
-GameFreakRTC_CalcRTCToLocalDelta: ; 802F5C8
-	push {r4,r5,lr}
-	ldr r4, =0x03005cf8
-	strh r0, [r4]
-	strb r1, [r4, 0x2]
-	strb r2, [r4, 0x3]
-	strb r3, [r4, 0x4]
-	ldr r5, =0x03000dc0
-	adds r0, r5, 0
-	bl GameFreakRTC_GetRTCDateTime
-	ldr r0, =0x03005d90
-	ldr r1, [r0]
-	adds r1, 0x98
-	adds r0, r5, 0
-	adds r2, r4, 0
-	bl GameFreakRTC_GetRTCDelta
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_CalcRTCToLocalDelta
-
-	thumb_func_start GameFreakRTC_GetDelta
-; void GameFreakRTC_GetDelta(GameDateTime *delta, GameDateTime *dateTime1, GameDateTime *dateTime2)
-GameFreakRTC_GetDelta: ; 802F5FC
-	push {r4-r6,lr}
-	adds r4, r0, 0
-	ldrb r3, [r2, 0x4]
-	ldrb r0, [r1, 0x4]
-	subs r5, r3, r0
-	strb r5, [r4, 0x4]
-	ldrb r3, [r2, 0x3]
-	ldrb r0, [r1, 0x3]
-	subs r6, r3, r0
-	strb r6, [r4, 0x3]
-	ldrb r0, [r2, 0x2]
-	ldrb r3, [r1, 0x2]
-	subs r0, r3
-	strb r0, [r4, 0x2]
-	ldrh r0, [r2]
-	ldrh r1, [r1]
-	subs r0, r1
-	strh r0, [r4]
-	lsls r0, r5, 24
-	cmp r0, 0
-	bge @0802F630
-	adds r0, r5, 0
-	adds r0, 0x3C
-	strb r0, [r4, 0x4]
-	subs r0, r6, 0x1
-	strb r0, [r4, 0x3]
-@0802F630:
-	ldrb r1, [r4, 0x3]
-	movs r0, 0x3
-	ldrsb r0, [r4, r0]
-	cmp r0, 0
-	bge @0802F646
-	adds r0, r1, 0
-	adds r0, 0x3C
-	strb r0, [r4, 0x3]
-	ldrb r0, [r4, 0x2]
-	subs r0, 0x1
-	strb r0, [r4, 0x2]
-@0802F646:
-	ldrb r1, [r4, 0x2]
-	movs r0, 0x2
-	ldrsb r0, [r4, r0]
-	cmp r0, 0
-	bge @0802F65C
-	adds r0, r1, 0
-	adds r0, 0x18
-	strb r0, [r4, 0x2]
-	ldrh r0, [r4]
-	subs r0, 0x1
-	strh r0, [r4]
-@0802F65C:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end GameFreakRTC_GetDelta
-
-	thumb_func_start GameFreakRTC_GetNumMinutes
-; u16 GameFreakRTC_GetNumMinutes()
-GameFreakRTC_GetNumMinutes: ; 802F664
-	push {r4,lr}
-	ldr r4, =0x03000dc0
-	adds r0, r4, 0
-	bl GameFreakRTC_GetRTCDateTime
-	adds r0, r4, 0
-	bl GameFreakRTC_GetNumDaysInternal
-	lsls r0, 16
-	lsrs r0, 16
-	lsls r1, r0, 1
-	adds r1, r0
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 5
-	ldrb r2, [r4, 0x4]
-	lsls r1, r2, 4
-	subs r1, r2
-	lsls r1, 2
-	adds r0, r1
-	ldrb r4, [r4, 0x5]
-	adds r0, r4
-	pop {r4}
-	pop {r1}
-	bx r1
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_GetNumMinutes
-
-	thumb_func_start GameFreakRTC_GetNumDays
-; u16 GameFreakRTC_GetNumDays()
-GameFreakRTC_GetNumDays: ; 802F69C
-	push {lr}
-	ldr r0, =0x03000dc0
-	bl GameFreakRTC_GetNumDaysInternal
-	lsls r0, 16
-	lsrs r0, 16
-	pop {r1}
-	bx r1
-	.align 2, 0
-	.pool
-	thumb_func_end GameFreakRTC_GetNumDays
+	.include "asm/rtc.s"
 
 	thumb_func_start c2_title_menu_3
 c2_title_menu_3: ; 802F6B0
diff --git a/asm/rtc.s b/asm/rtc.s
new file mode 100644
index 000000000..b1cfe0678
--- /dev/null
+++ b/asm/rtc.s
@@ -0,0 +1,824 @@
+	thumb_func_start GameFreakRTC_ClearIME
+; void GameFreakRTC_ClearIME()
+GameFreakRTC_ClearIME: ; 802F0CC
+	ldr r2, =0x03000dce
+	ldr r1, =0x04000208
+	ldrh r0, [r1]
+	strh r0, [r2]
+	movs r0, 0
+	strh r0, [r1]
+	bx lr
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_ClearIME
+
+	thumb_func_start GameFreakRTC_RestoreIME
+; void GameFreakRTC_RestoreIME()
+GameFreakRTC_RestoreIME: ; 802F0E4
+	ldr r0, =0x04000208
+	ldr r1, =0x03000dce
+	ldrh r1, [r1]
+	strh r1, [r0]
+	bx lr
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_RestoreIME
+
+	thumb_func_start GameFreakRTC_ConvertFromBCD
+; u8 GameFreakRTC_ConvertFromBCD(u8 bcdByte)
+GameFreakRTC_ConvertFromBCD: ; 802F0F8
+	push {lr}
+	lsls r0, 24
+	lsrs r2, r0, 24
+	cmp r2, 0x9F
+	bhi @0802F10A
+	movs r3, 0xF
+	ands r3, r2
+	cmp r3, 0x9
+	bls @0802F10E
+@0802F10A:
+	movs r0, 0xFF
+	b @0802F11C
+@0802F10E:
+	lsrs r1, r0, 28
+	movs r0, 0xF
+	ands r1, r0
+	lsls r0, r1, 2
+	adds r0, r1
+	lsls r0, 1
+	adds r0, r3
+@0802F11C:
+	pop {r1}
+	bx r1
+	thumb_func_end GameFreakRTC_ConvertFromBCD
+
+	thumb_func_start GameFreakRTC_IsLeapYear
+; BOOL GameFreakRTC_IsLeapYear(u32 year)
+GameFreakRTC_IsLeapYear: ; 802F120
+	push {r4,lr}
+	adds r4, r0, 0
+	movs r0, 0x3
+	ands r0, r4
+	cmp r0, 0
+	bne @0802F138
+	adds r0, r4, 0
+	movs r1, 0x64
+	bl __umodsi3
+	cmp r0, 0
+	bne @0802F146
+@0802F138:
+	movs r1, 0xC8
+	lsls r1, 1
+	adds r0, r4, 0
+	bl __umodsi3
+	cmp r0, 0
+	bne @0802F14A
+@0802F146:
+	movs r0, 0x1
+	b @0802F14C
+@0802F14A:
+	movs r0, 0
+@0802F14C:
+	pop {r4}
+	pop {r1}
+	bx r1
+	thumb_func_end GameFreakRTC_IsLeapYear
+
+	thumb_func_start GameFreakRTC_ConvertYearMonthDayToNumDays
+; u16 GameFreakRTC_ConvertYearMonthDayToNumDays(u8 year, u8 month, u8 dayOfMonth)
+GameFreakRTC_ConvertYearMonthDayToNumDays: ; 802F154
+	push {r4-r7,lr}
+	mov r7, r8
+	push {r7}
+	lsls r0, 24
+	lsrs r7, r0, 24
+	lsls r1, 24
+	lsrs r6, r1, 24
+	lsls r2, 24
+	lsrs r2, 24
+	mov r8, r2
+	movs r5, 0
+	subs r4, r7, 0x1
+	cmp r4, 0
+	blt @0802F192
+@0802F170:
+	ldr r1, =0x0000016d
+	adds r0, r5, r1
+	lsls r0, 16
+	lsrs r5, r0, 16
+	adds r0, r4, 0
+	bl GameFreakRTC_IsLeapYear
+	lsls r0, 24
+	lsrs r0, 24
+	cmp r0, 0x1
+	bne @0802F18C
+	adds r0, r5, 0x1
+	lsls r0, 16
+	lsrs r5, r0, 16
+@0802F18C:
+	subs r4, 0x1
+	cmp r4, 0
+	bge @0802F170
+@0802F192:
+	subs r0, r6, 0x1
+	cmp r0, 0
+	ble @0802F1AA
+	ldr r1, =gUnknown_082FECCC
+	adds r4, r0, 0
+@0802F19C:
+	ldm r1!, {r0}
+	adds r0, r5, r0
+	lsls r0, 16
+	lsrs r5, r0, 16
+	subs r4, 0x1
+	cmp r4, 0
+	bne @0802F19C
+@0802F1AA:
+	cmp r6, 0x2
+	bls @0802F1C2
+	adds r0, r7, 0
+	bl GameFreakRTC_IsLeapYear
+	lsls r0, 24
+	lsrs r0, 24
+	cmp r0, 0x1
+	bne @0802F1C2
+	adds r0, r5, 0x1
+	lsls r0, 16
+	lsrs r5, r0, 16
+@0802F1C2:
+	mov r1, r8
+	adds r0, r5, r1
+	lsls r0, 16
+	lsrs r5, r0, 16
+	adds r0, r5, 0
+	pop {r3}
+	mov r8, r3
+	pop {r4-r7}
+	pop {r1}
+	bx r1
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_ConvertYearMonthDayToNumDays
+
+	thumb_func_start GameFreakRTC_GetNumDaysInternal
+; u16 GameFreakRTC_GetNumDaysInternal(struct RtcInfo *rtc)
+GameFreakRTC_GetNumDaysInternal: ; 802F1E0
+	push {r4-r6,lr}
+	adds r6, r0, 0
+	ldrb r0, [r6]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r5, r0, 0
+	lsls r5, 24
+	lsrs r5, 24
+	ldrb r0, [r6, 0x1]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r4, r0, 0
+	lsls r4, 24
+	lsrs r4, 24
+	ldrb r0, [r6, 0x2]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r2, r0, 0
+	lsls r2, 24
+	lsrs r2, 24
+	adds r0, r5, 0
+	adds r1, r4, 0
+	bl GameFreakRTC_ConvertYearMonthDayToNumDays
+	lsls r0, 16
+	lsrs r0, 16
+	pop {r4-r6}
+	pop {r1}
+	bx r1
+	thumb_func_end GameFreakRTC_GetNumDaysInternal
+
+	thumb_func_start GameFreakRTC_Init
+; void GameFreakRTC_Init()
+GameFreakRTC_Init: ; 802F21C
+	push {r4,r5,lr}
+	ldr r5, =0x03000db8
+	movs r0, 0
+	strh r0, [r5]
+	bl GameFreakRTC_ClearIME
+	bl RTC_SetReadWrite
+	bl RTC_Init
+	ldr r4, =0x03000dcc
+	strb r0, [r4]
+	bl GameFreakRTC_RestoreIME
+	ldrb r4, [r4]
+	movs r0, 0xF
+	ands r0, r4
+	cmp r0, 0x1
+	beq @0802F250
+	movs r0, 0x1
+	strh r0, [r5]
+	b @0802F26E
+	.align 2, 0
+	.pool
+@0802F250:
+	movs r0, 0xF0
+	ands r0, r4
+	cmp r0, 0
+	beq @0802F25A
+	movs r0, 0x2
+@0802F25A:
+	strh r0, [r5]
+	ldr r4, =0x03000dc0
+	adds r0, r4, 0
+	bl GameFreakRTC_GetControlRegAndRTCDateTime
+	adds r0, r4, 0
+	bl GameFreakRTC_TestForErrors
+	ldr r1, =0x03000db8
+	strh r0, [r1]
+@0802F26E:
+	pop {r4,r5}
+	pop {r0}
+	bx r0
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_Init
+
+	thumb_func_start GameFreakRTC_GetErrorFlags
+; u16 GameFreakRTC_GetErrorFlags()
+GameFreakRTC_GetErrorFlags: ; 802F27C
+	ldr r0, =0x03000db8
+	ldrh r0, [r0]
+	bx lr
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_GetErrorFlags
+
+	thumb_func_start GameFreakRTC_GetRTCDateTime
+; void GameFreakRTC_GetRTCDateTime(struct RtcInfo *rtc)
+GameFreakRTC_GetRTCDateTime: ; 802F288
+	push {r4,lr}
+	adds r2, r0, 0
+	ldr r0, =0x03000db8
+	ldrh r1, [r0]
+	movs r0, 0xFF
+	lsls r0, 4
+	ands r0, r1
+	cmp r0, 0
+	beq @0802F2AC
+	adds r1, r2, 0
+	ldr r0, =gUnknown_082FECC0
+	ldm r0!, {r2-r4}
+	stm r1!, {r2-r4}
+	b @0802F2B2
+	.align 2, 0
+	.pool
+@0802F2AC:
+	adds r0, r2, 0
+	bl GameFreakRTC_GetControlRegAndRTCDateTime
+@0802F2B2:
+	pop {r4}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_GetRTCDateTime
+
+	thumb_func_start GameFreakRTC_GetRTCDateTimeInternal
+; void GameFreakRTC_GetRTCDateTimeInternal(struct RtcInfo *rtc)
+GameFreakRTC_GetRTCDateTimeInternal: ; 802F2B8
+	push {r4,lr}
+	adds r4, r0, 0
+	bl GameFreakRTC_ClearIME
+	adds r0, r4, 0
+	bl RTC_GetDateTime
+	bl GameFreakRTC_RestoreIME
+	pop {r4}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_GetRTCDateTimeInternal
+
+	thumb_func_start GameFreakRTC_GetControlReg
+; void GameFreakRTC_GetControlReg(struct RtcInfo *rtc)
+GameFreakRTC_GetControlReg: ; 802F2D0
+	push {r4,lr}
+	adds r4, r0, 0
+	bl GameFreakRTC_ClearIME
+	adds r0, r4, 0
+	bl RTC_GetControlReg
+	bl GameFreakRTC_RestoreIME
+	pop {r4}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_GetControlReg
+
+	thumb_func_start GameFreakRTC_GetControlRegAndRTCDateTime
+; void GameFreakRTC_GetControlRegAndRTCDateTime(struct RtcInfo *rtc)
+GameFreakRTC_GetControlRegAndRTCDateTime: ; 802F2E8
+	push {r4,lr}
+	adds r4, r0, 0
+	bl GameFreakRTC_GetControlReg
+	adds r0, r4, 0
+	bl GameFreakRTC_GetRTCDateTimeInternal
+	pop {r4}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_GetControlRegAndRTCDateTime
+
+	thumb_func_start GameFreakRTC_TestForErrors
+; u16 GameFreakRTC_TestForErrors(struct RtcInfo *rtc)
+GameFreakRTC_TestForErrors: ; 802F2FC
+	push {r4-r7,lr}
+	mov r7, r8
+	push {r7}
+	adds r7, r0, 0
+	ldrb r1, [r7, 0x7]
+	movs r0, 0x80
+	ands r0, r1
+	lsls r0, 24
+	lsrs r0, 24
+	negs r0, r0
+	asrs r4, r0, 31
+	movs r0, 0x20
+	ands r4, r0
+	movs r0, 0x40
+	ands r0, r1
+	cmp r0, 0
+	bne @0802F322
+	movs r0, 0x10
+	orrs r4, r0
+@0802F322:
+	ldrb r0, [r7]
+	bl GameFreakRTC_ConvertFromBCD
+	mov r8, r0
+	cmp r0, 0xFF
+	bne @0802F336
+	movs r0, 0x40
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F336:
+	ldrb r0, [r7, 0x1]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r6, r0, 0
+	cmp r6, 0xFF
+	beq @0802F34A
+	cmp r6, 0
+	beq @0802F34A
+	cmp r6, 0xC
+	ble @0802F352
+@0802F34A:
+	movs r0, 0x80
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F352:
+	ldrb r0, [r7, 0x2]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r5, r0, 0
+	cmp r5, 0xFF
+	bne @0802F36A
+	movs r1, 0x80
+	lsls r1, 1
+	adds r0, r1, 0
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F36A:
+	cmp r6, 0x2
+	bne @0802F384
+	mov r0, r8
+	bl GameFreakRTC_IsLeapYear
+	lsls r0, 24
+	lsrs r0, 24
+	ldr r1, =gUnknown_082FECCC
+	ldr r1, [r1, 0x4]
+	adds r0, r1
+	b @0802F38E
+	.align 2, 0
+	.pool
+@0802F384:
+	ldr r0, =gUnknown_082FECCC
+	subs r1, r6, 0x1
+	lsls r1, 2
+	adds r1, r0
+	ldr r0, [r1]
+@0802F38E:
+	cmp r5, r0
+	ble @0802F39E
+	movs r1, 0x80
+	lsls r1, 1
+	adds r0, r1, 0
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F39E:
+	ldrb r0, [r7, 0x4]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r5, r0, 0
+	cmp r5, 0x18
+	ble @0802F3B6
+	movs r1, 0x80
+	lsls r1, 2
+	adds r0, r1, 0
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F3B6:
+	ldrb r0, [r7, 0x5]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r5, r0, 0
+	cmp r5, 0x3C
+	ble @0802F3CE
+	movs r1, 0x80
+	lsls r1, 3
+	adds r0, r1, 0
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F3CE:
+	ldrb r0, [r7, 0x6]
+	bl GameFreakRTC_ConvertFromBCD
+	adds r5, r0, 0
+	cmp r5, 0x3C
+	ble @0802F3E6
+	movs r1, 0x80
+	lsls r1, 4
+	adds r0, r1, 0
+	orrs r4, r0
+	lsls r0, r4, 16
+	lsrs r4, r0, 16
+@0802F3E6:
+	adds r0, r4, 0
+	pop {r3}
+	mov r8, r3
+	pop {r4-r7}
+	pop {r1}
+	bx r1
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_TestForErrors
+
+	thumb_func_start GameFreakRTC_Reset
+; void GameFreakRTC_Reset()
+GameFreakRTC_Reset: ; 802F3F8
+	push {lr}
+	bl GameFreakRTC_ClearIME
+	bl RTC_Reset
+	bl GameFreakRTC_RestoreIME
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_Reset
+
+	thumb_func_start GameFreakRTC_FormatDecimalTimeString
+; void GameFreakRTC_FormatDecimalTimeString(u8 *dest, s32 hour, s32 minute, s32 second)
+GameFreakRTC_FormatDecimalTimeString: ; 802F40C
+	push {r4-r6,lr}
+	adds r5, r2, 0
+	adds r6, r3, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToDecimalString
+	movs r4, 0xF0
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r5, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToDecimalString
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r6, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToDecimalString
+	movs r1, 0xFF
+	strb r1, [r0]
+	pop {r4-r6}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_FormatDecimalTimeString
+
+	thumb_func_start GameFreakRTC_FormatHexTimeString
+; void GameFreakRTC_FormatHexTimeString(u8 *dest, s32 hour, s32 minute, s32 second)
+GameFreakRTC_FormatHexTimeString: ; 802F444
+	push {r4-r6,lr}
+	adds r5, r2, 0
+	adds r6, r3, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToHexString
+	movs r4, 0xF0
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r5, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToHexString
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r6, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToHexString
+	movs r1, 0xFF
+	strb r1, [r0]
+	pop {r4-r6}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_FormatHexTimeString
+
+	thumb_func_start GameFreakRTC_FormatHexTimeStringFromRtcInfo
+; void GameFreakRTC_FormatHexTimeStringFromRtcInfo()
+GameFreakRTC_FormatHexTimeStringFromRtcInfo: ; 802F47C
+	push {lr}
+	ldr r3, =0x03000dc0
+	ldrb r1, [r3, 0x4]
+	ldrb r2, [r3, 0x5]
+	ldrb r3, [r3, 0x6]
+	bl GameFreakRTC_FormatHexTimeString
+	pop {r0}
+	bx r0
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_FormatHexTimeStringFromRtcInfo
+
+	thumb_func_start GameFreakRTC_FormatDecimalYearMonthDayString
+; void GameFreakRTC_FormatDecimalYearMonthDayString(u8 *dest, s32 year, s32 month, s32 dayOfMonth)
+GameFreakRTC_FormatDecimalYearMonthDayString: ; 802F494
+	push {r4-r6,lr}
+	adds r5, r2, 0
+	adds r6, r3, 0
+	movs r2, 0x2
+	movs r3, 0x4
+	bl ConvertIntToDecimalString
+	movs r4, 0xAE
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r5, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToDecimalString
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r6, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToDecimalString
+	movs r1, 0xFF
+	strb r1, [r0]
+	pop {r4-r6}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_FormatDecimalYearMonthDayString
+
+	thumb_func_start GameFreakRTC_FormatHexYearMonthDayString
+; void GameFreakRTC_FormatHexYearMonthDayString(u8 *dest, s32 year, s32 month, s32 dayOfMonth)
+GameFreakRTC_FormatHexYearMonthDayString: ; 802F4CC
+	push {r4-r6,lr}
+	adds r5, r2, 0
+	adds r6, r3, 0
+	movs r2, 0x2
+	movs r3, 0x4
+	bl ConvertIntToHexString
+	movs r4, 0xAE
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r5, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToHexString
+	strb r4, [r0]
+	adds r0, 0x1
+	adds r1, r6, 0
+	movs r2, 0x2
+	movs r3, 0x2
+	bl ConvertIntToHexString
+	movs r1, 0xFF
+	strb r1, [r0]
+	pop {r4-r6}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_FormatHexYearMonthDayString
+
+	thumb_func_start GameFreakRTC_GetRTCDelta
+; void GameFreakRTC_GetRTCDelta(RtcInfo *rtc, GameDateTime *delta, GameDateTime *dateTime)
+GameFreakRTC_GetRTCDelta: ; 802F504
+	push {r4-r7,lr}
+	adds r5, r0, 0
+	adds r7, r1, 0
+	adds r6, r2, 0
+	bl GameFreakRTC_GetNumDaysInternal
+	adds r4, r0, 0
+	lsls r4, 16
+	lsrs r4, 16
+	ldrb r0, [r5, 0x6]
+	bl GameFreakRTC_ConvertFromBCD
+	ldrb r1, [r6, 0x4]
+	subs r0, r1
+	strb r0, [r7, 0x4]
+	ldrb r0, [r5, 0x5]
+	bl GameFreakRTC_ConvertFromBCD
+	ldrb r1, [r6, 0x3]
+	subs r0, r1
+	strb r0, [r7, 0x3]
+	ldrb r0, [r5, 0x4]
+	bl GameFreakRTC_ConvertFromBCD
+	ldrb r1, [r6, 0x2]
+	subs r0, r1
+	strb r0, [r7, 0x2]
+	ldrh r0, [r6]
+	subs r4, r0
+	strh r4, [r7]
+	ldrb r1, [r7, 0x4]
+	movs r0, 0x4
+	ldrsb r0, [r7, r0]
+	cmp r0, 0
+	bge @0802F556
+	adds r0, r1, 0
+	adds r0, 0x3C
+	strb r0, [r7, 0x4]
+	ldrb r0, [r7, 0x3]
+	subs r0, 0x1
+	strb r0, [r7, 0x3]
+@0802F556:
+	ldrb r1, [r7, 0x3]
+	movs r0, 0x3
+	ldrsb r0, [r7, r0]
+	cmp r0, 0
+	bge @0802F56C
+	adds r0, r1, 0
+	adds r0, 0x3C
+	strb r0, [r7, 0x3]
+	ldrb r0, [r7, 0x2]
+	subs r0, 0x1
+	strb r0, [r7, 0x2]
+@0802F56C:
+	ldrb r1, [r7, 0x2]
+	movs r0, 0x2
+	ldrsb r0, [r7, r0]
+	cmp r0, 0
+	bge @0802F582
+	adds r0, r1, 0
+	adds r0, 0x18
+	strb r0, [r7, 0x2]
+	ldrh r0, [r7]
+	subs r0, 0x1
+	strh r0, [r7]
+@0802F582:
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_GetRTCDelta
+
+	thumb_func_start GameFreakRTC_CalcLocalDateTime
+; void GameFreakRTC_CalcLocalDateTime()
+GameFreakRTC_CalcLocalDateTime: ; 802F588
+	push {r4,lr}
+	ldr r4, =0x03000dc0
+	adds r0, r4, 0
+	bl GameFreakRTC_GetRTCDateTime
+	ldr r1, =0x03005cf8
+	ldr r0, =0x03005d90
+	ldr r2, [r0]
+	adds r2, 0x98
+	adds r0, r4, 0
+	bl GameFreakRTC_GetRTCDelta
+	pop {r4}
+	pop {r0}
+	bx r0
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_CalcLocalDateTime
+
+	thumb_func_start GameFreakRTC_CalcRTCToLocalDelta_DayZero
+; void GameFreakRTC_CalcRTCToLocalDelta_DayZero(u8 hour, u8 minute)
+GameFreakRTC_CalcRTCToLocalDelta_DayZero: ; 802F5B4
+	push {lr}
+	adds r3, r0, 0
+	adds r2, r1, 0
+	movs r0, 0
+	adds r1, r3, 0
+	movs r3, 0
+	bl GameFreakRTC_CalcRTCToLocalDelta
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_CalcRTCToLocalDelta_DayZero
+
+	thumb_func_start GameFreakRTC_CalcRTCToLocalDelta
+; void GameFreakRTC_CalcRTCToLocalDelta(u16 numDays, u8 hour, u8 minute, u8 second)
+GameFreakRTC_CalcRTCToLocalDelta: ; 802F5C8
+	push {r4,r5,lr}
+	ldr r4, =0x03005cf8
+	strh r0, [r4]
+	strb r1, [r4, 0x2]
+	strb r2, [r4, 0x3]
+	strb r3, [r4, 0x4]
+	ldr r5, =0x03000dc0
+	adds r0, r5, 0
+	bl GameFreakRTC_GetRTCDateTime
+	ldr r0, =0x03005d90
+	ldr r1, [r0]
+	adds r1, 0x98
+	adds r0, r5, 0
+	adds r2, r4, 0
+	bl GameFreakRTC_GetRTCDelta
+	pop {r4,r5}
+	pop {r0}
+	bx r0
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_CalcRTCToLocalDelta
+
+	thumb_func_start GameFreakRTC_GetDelta
+; void GameFreakRTC_GetDelta(GameDateTime *delta, GameDateTime *dateTime1, GameDateTime *dateTime2)
+GameFreakRTC_GetDelta: ; 802F5FC
+	push {r4-r6,lr}
+	adds r4, r0, 0
+	ldrb r3, [r2, 0x4]
+	ldrb r0, [r1, 0x4]
+	subs r5, r3, r0
+	strb r5, [r4, 0x4]
+	ldrb r3, [r2, 0x3]
+	ldrb r0, [r1, 0x3]
+	subs r6, r3, r0
+	strb r6, [r4, 0x3]
+	ldrb r0, [r2, 0x2]
+	ldrb r3, [r1, 0x2]
+	subs r0, r3
+	strb r0, [r4, 0x2]
+	ldrh r0, [r2]
+	ldrh r1, [r1]
+	subs r0, r1
+	strh r0, [r4]
+	lsls r0, r5, 24
+	cmp r0, 0
+	bge @0802F630
+	adds r0, r5, 0
+	adds r0, 0x3C
+	strb r0, [r4, 0x4]
+	subs r0, r6, 0x1
+	strb r0, [r4, 0x3]
+@0802F630:
+	ldrb r1, [r4, 0x3]
+	movs r0, 0x3
+	ldrsb r0, [r4, r0]
+	cmp r0, 0
+	bge @0802F646
+	adds r0, r1, 0
+	adds r0, 0x3C
+	strb r0, [r4, 0x3]
+	ldrb r0, [r4, 0x2]
+	subs r0, 0x1
+	strb r0, [r4, 0x2]
+@0802F646:
+	ldrb r1, [r4, 0x2]
+	movs r0, 0x2
+	ldrsb r0, [r4, r0]
+	cmp r0, 0
+	bge @0802F65C
+	adds r0, r1, 0
+	adds r0, 0x18
+	strb r0, [r4, 0x2]
+	ldrh r0, [r4]
+	subs r0, 0x1
+	strh r0, [r4]
+@0802F65C:
+	pop {r4-r6}
+	pop {r0}
+	bx r0
+	thumb_func_end GameFreakRTC_GetDelta
+
+	thumb_func_start GameFreakRTC_GetNumMinutes
+; u16 GameFreakRTC_GetNumMinutes()
+GameFreakRTC_GetNumMinutes: ; 802F664
+	push {r4,lr}
+	ldr r4, =0x03000dc0
+	adds r0, r4, 0
+	bl GameFreakRTC_GetRTCDateTime
+	adds r0, r4, 0
+	bl GameFreakRTC_GetNumDaysInternal
+	lsls r0, 16
+	lsrs r0, 16
+	lsls r1, r0, 1
+	adds r1, r0
+	lsls r0, r1, 4
+	subs r0, r1
+	lsls r0, 5
+	ldrb r2, [r4, 0x4]
+	lsls r1, r2, 4
+	subs r1, r2
+	lsls r1, 2
+	adds r0, r1
+	ldrb r4, [r4, 0x5]
+	adds r0, r4
+	pop {r4}
+	pop {r1}
+	bx r1
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_GetNumMinutes
+
+	thumb_func_start GameFreakRTC_GetNumDays
+; u16 GameFreakRTC_GetNumDays()
+GameFreakRTC_GetNumDays: ; 802F69C
+	push {lr}
+	ldr r0, =0x03000dc0
+	bl GameFreakRTC_GetNumDaysInternal
+	lsls r0, 16
+	lsrs r0, 16
+	pop {r1}
+	bx r1
+	.align 2, 0
+	.pool
+	thumb_func_end GameFreakRTC_GetNumDays