pokeemerald/asm/fossil_specials.s

999 lines
15 KiB
ArmAsm

.include "asm/macros.inc"
.include "constants/constants.inc"
.syntax unified
.text
thumb_func_start sub_81BEB24
sub_81BEB24: @ 81BEB24
push {r4,r5,lr}
movs r4, 0
ldr r5, =gUnknown_08617DA4
_081BEB2A:
lsls r2, r4, 2
adds r2, r5
ldrb r0, [r2]
adds r0, 0x7
ldrb r1, [r2, 0x1]
adds r1, 0x7
ldrh r2, [r2, 0x2]
bl MapGridSetMetatileIdAt
adds r0, r4, 0x1
lsls r0, 24
lsrs r4, r0, 24
cmp r4, 0x11
bls _081BEB2A
bl DrawWholeMapView
pop {r4,r5}
pop {r0}
bx r0
.pool
thumb_func_end sub_81BEB24
thumb_func_start sub_81BEB54
sub_81BEB54: @ 81BEB54
push {lr}
ldr r0, =sub_81BED50
movs r1, 0x9
bl CreateTask
pop {r0}
bx r0
.pool
thumb_func_end sub_81BEB54
thumb_func_start sub_81BEB68
sub_81BEB68: @ 81BEB68
push {lr}
ldr r0, =sub_81BEBF4
movs r1, 0x9
bl CreateTask
pop {r0}
bx r0
.pool
thumb_func_end sub_81BEB68
thumb_func_start sub_81BEB7C
sub_81BEB7C: @ 81BEB7C
push {lr}
ldr r0, =sub_81BF028
movs r1, 0x9
bl CreateTask
pop {r0}
bx r0
.pool
thumb_func_end sub_81BEB7C
thumb_func_start sub_81BEB90
sub_81BEB90: @ 81BEB90
push {r4,lr}
ldr r4, =gUnknown_0203CF14
ldr r0, [r4]
ldrh r1, [r0]
movs r0, 0x10
bl SetGpuReg
ldr r0, [r4]
ldrh r1, [r0, 0x2]
movs r0, 0x12
bl SetGpuReg
pop {r4}
pop {r0}
bx r0
.pool
thumb_func_end sub_81BEB90
thumb_func_start sub_81BEBB4
sub_81BEBB4: @ 81BEBB4
push {lr}
lsls r0, 24
lsrs r0, 24
ldr r2, =gTasks
lsls r1, r0, 2
adds r1, r0
lsls r1, 3
adds r2, r1, r2
ldrh r1, [r2, 0x8]
movs r3, 0x8
ldrsh r0, [r2, r3]
cmp r0, 0
bne _081BEBEC
ldr r0, =gUnknown_0203CF14
ldr r1, [r0]
ldrh r0, [r1]
negs r0, r0
strh r0, [r1]
movs r0, 0x2
strh r0, [r2, 0x8]
bl sub_81BEB90
b _081BEBF0
.pool
_081BEBEC:
subs r0, r1, 0x1
strh r0, [r2, 0x8]
_081BEBF0:
pop {r0}
bx r0
thumb_func_end sub_81BEBB4
thumb_func_start sub_81BEBF4
sub_81BEBF4: @ 81BEBF4
push {r4,r5,lr}
sub sp, 0xC
lsls r0, 24
lsrs r5, r0, 24
ldr r1, =gTasks
lsls r0, r5, 2
adds r0, r5
lsls r0, 3
adds r0, r1
movs r1, 0x8
ldrsh r0, [r0, r1]
cmp r0, 0x6
bls _081BEC10
b _081BED40
_081BEC10:
lsls r0, 2
ldr r1, =_081BEC24
adds r0, r1
ldr r0, [r0]
mov pc, r0
.pool
.align 2, 0
_081BEC24:
.4byte _081BEC40
.4byte _081BEC50
.4byte _081BEC88
.4byte _081BECB0
.4byte _081BECF8
.4byte _081BED00
.4byte _081BED1C
_081BEC40:
bl FreeAllWindowBuffers
movs r0, 0
movs r1, 0x7
movs r2, 0x2
bl SetBgAttribute
b _081BED04
_081BEC50:
ldr r4, =gUnknown_0203CF04
movs r0, 0x92
lsls r0, 4
bl AllocZeroed
str r0, [r4]
ldr r4, =gUnknown_0203CF08
movs r0, 0x80
lsls r0, 4
bl AllocZeroed
str r0, [r4]
movs r0, 0
movs r1, 0
movs r2, 0
bl ChangeBgX
movs r0, 0
movs r1, 0
movs r2, 0
bl ChangeBgY
b _081BECD8
.pool
_081BEC88:
ldr r0, =gUnknown_08617274
ldr r4, =gUnknown_0203CF04
ldr r1, [r4]
movs r2, 0x92
lsls r2, 3
bl CpuSet
ldr r1, [r4]
movs r2, 0x92
lsls r2, 4
movs r0, 0
movs r3, 0
bl LoadBgTiles
b _081BECD8
.pool
_081BECB0:
ldr r0, =gUnknown_0203CF08
ldr r1, [r0]
movs r0, 0
bl SetBgTilemapBuffer
ldr r1, =gUnknown_08617B94
movs r0, 0x6
str r0, [sp]
movs r0, 0xC
str r0, [sp, 0x4]
movs r0, 0x11
str r0, [sp, 0x8]
movs r0, 0
movs r2, 0xC
movs r3, 0x1D
bl CopyToBgTilemapBufferRect_ChangePalette
movs r0, 0
bl CopyBgTilemapBufferToVram
_081BECD8:
ldr r1, =gTasks
lsls r0, r5, 2
adds r0, r5
lsls r0, 3
adds r0, r1
ldrh r1, [r0, 0x8]
adds r1, 0x1
strh r1, [r0, 0x8]
b _081BED40
.pool
_081BECF8:
movs r0, 0
bl ShowBg
b _081BED04
_081BED00:
bl sub_81BEB24
_081BED04:
ldr r0, =gTasks
lsls r1, r5, 2
adds r1, r5
lsls r1, 3
adds r1, r0
ldrh r0, [r1, 0x8]
adds r0, 0x1
strh r0, [r1, 0x8]
b _081BED40
.pool
_081BED1C:
ldr r4, =gUnknown_0203CF14
movs r0, 0x4
bl Alloc
str r0, [r4]
movs r2, 0
movs r1, 0x2
strh r1, [r0]
strh r2, [r0, 0x2]
ldr r0, =sub_81BEBB4
movs r1, 0xA
bl CreateTask
adds r0, r5, 0
bl DestroyTask
bl EnableBothScriptContexts
_081BED40:
add sp, 0xC
pop {r4,r5}
pop {r0}
bx r0
.pool
thumb_func_end sub_81BEBF4
thumb_func_start sub_81BED50
sub_81BED50: @ 81BED50
push {r4-r7,lr}
mov r7, r10
mov r6, r9
mov r5, r8
push {r5-r7}
sub sp, 0x10
lsls r0, 24
lsrs r0, 24
mov r10, r0
ldr r1, =gTasks
lsls r0, 2
add r0, r10
lsls r0, 3
adds r0, r1
ldrh r0, [r0, 0x8]
subs r0, 0x1
lsls r0, 16
asrs r0, 16
adds r6, r1, 0
cmp r0, 0x7
bls _081BED7C
b _081BF002
_081BED7C:
lsls r0, 2
ldr r1, =_081BED90
adds r0, r1
ldr r0, [r0]
mov pc, r0
.pool
.align 2, 0
_081BED90:
.4byte _081BEDB0
.4byte _081BF002
.4byte _081BEDC4
.4byte _081BEF64
.4byte _081BEF94
.4byte _081BEFD0
.4byte _081BEFF0
.4byte _081BEFF8
_081BEDB0:
ldr r4, =gUnknown_0203CF10
movs r0, 0xC0
lsls r0, 2
bl AllocZeroed
str r0, [r4]
b _081BF002
.pool
_081BEDC4:
mov r1, r10
lsls r0, r1, 2
adds r1, r0, r1
lsls r1, 3
adds r2, r1, r6
ldrh r3, [r2, 0xE]
movs r4, 0xE
ldrsh r1, [r2, r4]
str r0, [sp, 0x8]
cmp r1, 0x5F
bgt _081BEE8A
movs r1, 0xA
ldrsh r0, [r2, r1]
cmp r0, 0x1
ble _081BEE7C
lsls r0, r3, 24
lsrs r4, r0, 24
movs r0, 0x30
bl Alloc
ldr r3, =gUnknown_0203CF10
ldr r1, [r3]
lsls r2, r4, 3
adds r1, r2, r1
str r0, [r1]
movs r5, 0
adds r4, r2, 0
_081BEDFA:
ldr r0, [r3]
adds r0, r4, r0
ldr r0, [r0]
adds r0, r5
strb r5, [r0]
adds r0, r5, 0x1
lsls r0, 16
lsrs r5, r0, 16
cmp r5, 0x2F
bls _081BEDFA
movs r5, 0
ldr r7, =gUnknown_0203CF10
adds r6, r2, 0
_081BEE14:
bl Random
lsls r0, 16
lsrs r0, 16
movs r1, 0x30
bl __umodsi3
adds r4, r0, 0
lsls r4, 16
lsrs r4, 16
bl Random
lsls r0, 16
lsrs r0, 16
movs r1, 0x30
bl __umodsi3
lsls r0, 16
lsrs r0, 16
ldr r1, [r7]
adds r1, r6, r1
ldr r1, [r1]
adds r0, r1, r0
ldrb r2, [r0]
adds r1, r4
ldrb r1, [r1]
strb r1, [r0]
ldr r0, [r7]
adds r0, r6, r0
ldr r0, [r0]
adds r0, r4
strb r2, [r0]
adds r0, r5, 0x1
lsls r0, 16
lsrs r5, r0, 16
cmp r5, 0x2F
bls _081BEE14
ldr r0, =gTasks
ldr r1, [sp, 0x8]
add r1, r10
lsls r1, 3
adds r2, r1, r0
ldrh r3, [r2, 0xE]
movs r4, 0xE
ldrsh r1, [r2, r4]
adds r6, r0, 0
cmp r1, 0x5F
bgt _081BEE78
adds r0, r3, 0x1
strh r0, [r2, 0xE]
_081BEE78:
movs r0, 0
strh r0, [r2, 0xA]
_081BEE7C:
ldr r1, [sp, 0x8]
add r1, r10
lsls r1, 3
adds r1, r6
ldrh r0, [r1, 0xA]
adds r0, 0x1
strh r0, [r1, 0xA]
_081BEE8A:
ldr r0, [sp, 0x8]
add r0, r10
lsls r0, 3
adds r0, r6
ldrb r4, [r0, 0xE]
ldrb r5, [r0, 0xC]
lsls r0, r4, 16
cmp r5, r4
bcs _081BEF32
str r0, [sp, 0xC]
_081BEE9E:
movs r6, 0
adds r0, r5, 0x1
str r0, [sp, 0x4]
lsls r4, r5, 3
movs r2, 0x5F
subs r1, r2, r5
lsls r0, r1, 1
adds r0, r1
lsls r0, 4
mov r9, r0
_081BEEB2:
ldr r0, =gUnknown_0203CF04
ldr r0, [r0]
ldr r7, =gUnknown_0203CF10
ldr r3, [r7]
adds r3, r4, r3
ldrb r2, [r3, 0x4]
adds r1, r2, 0x1
strb r1, [r3, 0x4]
lsls r2, 24
lsrs r2, 24
ldr r1, [r3]
adds r1, r2
ldrb r1, [r1]
add r1, r9
lsls r1, 16
lsrs r1, 16
movs r2, 0x1
mov r8, r2
str r2, [sp]
movs r2, 0
movs r3, 0x30
bl sub_81BF2B8
adds r0, r6, 0x1
lsls r0, 24
lsrs r6, r0, 24
cmp r6, 0
beq _081BEEB2
ldr r0, [r7]
adds r1, r4, r0
ldrb r0, [r1, 0x4]
cmp r0, 0x2F
bls _081BEF24
ldr r0, [r1]
bl Free
ldr r0, [r7]
adds r0, r4, r0
movs r1, 0
str r1, [r0]
ldr r1, [sp, 0x8]
add r1, r10
lsls r1, 3
ldr r4, =gTasks
adds r1, r4
ldrh r0, [r1, 0xC]
adds r0, 0x1
strh r0, [r1, 0xC]
mov r0, r8
ands r5, r0
cmp r5, 0x1
bne _081BEF24
ldr r0, =gUnknown_0203CF14
ldr r1, [r0]
ldrh r0, [r1, 0x2]
subs r0, 0x1
strh r0, [r1, 0x2]
_081BEF24:
ldr r1, [sp, 0x4]
lsls r0, r1, 16
lsrs r5, r0, 16
ldr r2, [sp, 0xC]
lsrs r0, r2, 16
cmp r5, r0
bcc _081BEE9E
_081BEF32:
ldr r0, =gUnknown_0203CF04
ldr r1, [r0]
movs r2, 0x92
lsls r2, 4
movs r0, 0
movs r3, 0
bl LoadBgTiles
ldr r0, =gUnknown_0203CF10
ldr r0, [r0]
movs r4, 0xBE
lsls r4, 2
adds r0, r4
ldrb r0, [r0, 0x4]
cmp r0, 0x2F
bhi _081BF002
b _081BF014
.pool
_081BEF64:
movs r0, 0
bl UnsetBgTilemapBuffer
ldr r0, =sub_81BEBB4
bl FindTaskIdByFunc
lsls r0, 24
lsrs r0, 24
cmp r0, 0xFF
beq _081BEF7C
bl DestroyTask
_081BEF7C:
ldr r0, =gUnknown_0203CF14
ldr r1, [r0]
movs r0, 0
strh r0, [r1]
strh r0, [r1, 0x2]
bl sub_81BEB90
b _081BF002
.pool
_081BEF94:
ldr r4, =gUnknown_0203CF14
ldr r0, [r4]
bl Free
movs r5, 0
str r5, [r4]
ldr r4, =gUnknown_0203CF10
ldr r0, [r4]
bl Free
str r5, [r4]
ldr r4, =gUnknown_0203CF04
ldr r0, [r4]
bl Free
str r5, [r4]
ldr r4, =gUnknown_0203CF08
ldr r0, [r4]
bl Free
str r5, [r4]
b _081BF002
.pool
_081BEFD0:
movs r0, 0xC
movs r1, 0x2
bl SetGpuRegBits
movs r0, 0x8
movs r1, 0
bl SetGpuRegBits
movs r0, 0
movs r1, 0x7
movs r2, 0
bl SetBgAttribute
bl sub_81971D0
b _081BF002
_081BEFF0:
movs r0, 0
bl ShowBg
b _081BF002
_081BEFF8:
mov r0, r10
bl DestroyTask
bl EnableBothScriptContexts
_081BF002:
ldr r0, =gTasks
mov r2, r10
lsls r1, r2, 2
add r1, r10
lsls r1, 3
adds r1, r0
ldrh r0, [r1, 0x8]
adds r0, 0x1
strh r0, [r1, 0x8]
_081BF014:
add sp, 0x10
pop {r3-r5}
mov r8, r3
mov r9, r4
mov r10, r5
pop {r4-r7}
pop {r0}
bx r0
.pool
thumb_func_end sub_81BED50
thumb_func_start sub_81BF028
sub_81BF028: @ 81BF028
push {r4-r7,lr}
mov r7, r8
push {r7}
sub sp, 0x18
lsls r0, 24
lsrs r7, r0, 24
ldr r1, =gTasks
lsls r0, r7, 2
adds r0, r7
lsls r0, 3
adds r0, r1
ldrh r0, [r0, 0x8]
subs r0, 0x1
lsls r0, 16
asrs r0, 16
cmp r0, 0x7
bls _081BF04C
b _081BF228
_081BF04C:
lsls r0, 2
ldr r1, =_081BF060
adds r0, r1
ldr r0, [r0]
mov pc, r0
.pool
.align 2, 0
_081BF060:
.4byte _081BF080
.4byte _081BF0B4
.4byte _081BF0DC
.4byte _081BF0F0
.4byte _081BF148
.4byte _081BF170
.4byte _081BF1CC
.4byte _081BF224
_081BF080:
ldr r4, =gUnknown_0203CF0C
movs r0, 0x14
bl AllocZeroed
str r0, [r4]
movs r0, 0x80
bl AllocZeroed
ldr r1, [r4]
str r0, [r1]
movs r0, 0x8
bl AllocZeroed
ldr r1, [r4]
str r0, [r1, 0x4]
movs r0, 0x80
lsls r0, 2
bl AllocZeroed
ldr r1, [r4]
str r0, [r1, 0xC]
movs r0, 0
strh r0, [r1, 0x10]
b _081BF228
.pool
_081BF0B4:
ldr r0, =gUnknown_0203CF0C
ldr r0, [r0]
ldr r1, [r0]
movs r5, 0
ldr r2, =gRootFossil_Gfx
_081BF0BE:
adds r0, r5, r2
ldrb r0, [r0]
strb r0, [r1]
adds r0, r5, 0x1
lsls r0, 16
lsrs r5, r0, 16
adds r1, 0x1
cmp r5, 0x7F
bls _081BF0BE
b _081BF228
.pool
_081BF0DC:
ldr r0, =gUnknown_0203CF0C
ldr r0, [r0]
ldr r1, [r0, 0x4]
ldr r0, [r0]
str r0, [r1]
movs r0, 0x80
strh r0, [r1, 0x4]
b _081BF228
.pool
_081BF0F0:
mov r1, sp
ldr r0, =gUnknown_08617E00
ldm r0!, {r2-r4}
stm r1!, {r2-r4}
ldm r0!, {r2-r4}
stm r1!, {r2-r4}
ldr r4, =gUnknown_0203CF0C
ldr r0, [r4]
ldr r0, [r0, 0x4]
str r0, [sp, 0xC]
movs r2, 0x10
negs r2, r2
mov r0, sp
movs r1, 0x80
movs r3, 0x1
bl CreateSprite
ldr r1, [r4]
movs r3, 0
strb r0, [r1, 0x8]
ldr r2, =gSprites
ldr r0, [r4]
ldrb r1, [r0, 0x8]
lsls r0, r1, 4
adds r0, r1
lsls r0, 2
adds r0, r2
adds r0, 0x28
strb r3, [r0]
ldr r3, [r4]
ldrb r1, [r3, 0x8]
lsls r0, r1, 4
adds r0, r1
lsls r0, 2
adds r0, r2
ldrh r1, [r0, 0x20]
strh r1, [r0, 0x2E]
ldrb r1, [r3, 0x8]
lsls r0, r1, 4
adds r0, r1
lsls r0, 2
adds r0, r2
movs r1, 0x1
strh r1, [r0, 0x30]
_081BF148:
movs r5, 0
ldr r2, =gUnknown_0203CF0C
_081BF14C:
ldr r0, [r2]
ldr r1, [r0, 0xC]
lsls r0, r5, 1
adds r0, r1
strh r5, [r0]
adds r0, r5, 0x1
lsls r0, 16
lsrs r5, r0, 16
cmp r5, 0xFF
bls _081BF14C
b _081BF228
.pool
_081BF170:
movs r5, 0
movs r6, 0xFF
ldr r0, =0x000001ff
mov r8, r0
_081BF178:
bl Random
adds r4, r6, 0
ands r4, r0
bl Random
adds r1, r6, 0
ands r1, r0
ldr r0, =gUnknown_0203CF0C
ldr r3, [r0]
ldr r0, [r3, 0xC]
lsls r1, 1
adds r1, r0
ldrh r2, [r1]
lsls r4, 1
adds r4, r0
ldrh r0, [r4]
strh r0, [r1]
strh r2, [r4]
adds r0, r5, 0x1
lsls r0, 16
lsrs r5, r0, 16
cmp r5, r8
bls _081BF178
ldr r2, =gSprites
ldrb r1, [r3, 0x8]
lsls r0, r1, 4
adds r0, r1
lsls r0, 2
adds r2, 0x1C
adds r0, r2
ldr r1, =sub_81BF248
str r1, [r0]
b _081BF228
.pool
_081BF1CC:
ldr r3, =gSprites
ldr r5, =gUnknown_0203CF0C
ldr r0, [r5]
ldrb r1, [r0, 0x8]
lsls r0, r1, 4
adds r0, r1
lsls r2, r0, 2
adds r0, r3, 0
adds r0, 0x1C
adds r0, r2, r0
ldr r1, [r0]
ldr r0, =SpriteCallbackDummy
cmp r1, r0
bne _081BF238
adds r0, r2, r3
bl DestroySprite
ldr r0, [r5]
ldr r0, [r0, 0xC]
bl Free
ldr r0, [r5]
movs r4, 0
str r4, [r0, 0xC]
ldr r0, [r0, 0x4]
bl Free
ldr r0, [r5]
str r4, [r0, 0x4]
ldr r0, [r0]
bl Free
ldr r0, [r5]
str r4, [r0]
bl Free
str r4, [r5]
b _081BF228
.pool
_081BF224:
bl EnableBothScriptContexts
_081BF228:
ldr r0, =gTasks
lsls r1, r7, 2
adds r1, r7
lsls r1, 3
adds r1, r0
ldrh r0, [r1, 0x8]
adds r0, 0x1
strh r0, [r1, 0x8]
_081BF238:
add sp, 0x18
pop {r3}
mov r8, r3
pop {r4-r7}
pop {r0}
bx r0
.pool
thumb_func_end sub_81BF028
thumb_func_start sub_81BF248
sub_81BF248: @ 81BF248
push {r4,r5,lr}
sub sp, 0x4
adds r5, r0, 0
ldr r0, =gUnknown_0203CF0C
ldr r0, [r0]
ldrh r0, [r0, 0x10]
cmp r0, 0xFF
bls _081BF268
ldr r0, =SpriteCallbackDummy
str r0, [r5, 0x1C]
b _081BF2B0
.pool
_081BF268:
ldrh r1, [r5, 0x22]
movs r2, 0x22
ldrsh r0, [r5, r2]
cmp r0, 0x5F
ble _081BF2AC
movs r4, 0
_081BF274:
ldr r0, =gUnknown_0203CF0C
ldr r3, [r0]
ldr r0, [r3]
ldrh r1, [r3, 0x10]
adds r2, r1, 0x1
strh r2, [r3, 0x10]
lsls r1, 16
ldr r2, [r3, 0xC]
lsrs r1, 15
adds r1, r2
ldrh r1, [r1]
movs r2, 0
str r2, [sp]
movs r3, 0x10
bl sub_81BF2B8
adds r0, r4, 0x1
lsls r0, 24
lsrs r4, r0, 24
cmp r4, 0x1
bls _081BF274
adds r0, r5, 0
movs r1, 0
bl StartSpriteAnim
b _081BF2B0
.pool
_081BF2AC:
adds r0, r1, 0x1
strh r0, [r5, 0x22]
_081BF2B0:
add sp, 0x4
pop {r4,r5}
pop {r0}
bx r0
thumb_func_end sub_81BF248
thumb_func_start sub_81BF2B8
sub_81BF2B8: @ 81BF2B8
push {r4-r7,lr}
mov r7, r10
mov r6, r9
mov r5, r8
push {r5-r7}
sub sp, 0x8
str r0, [sp]
mov r10, r1
adds r6, r2, 0
mov r8, r3
ldr r0, [sp, 0x28]
mov r9, r0
lsls r1, 16
lsrs r1, 16
mov r10, r1
lsls r6, 24
lsrs r6, 24
mov r0, r8
lsls r0, 24
mov r8, r0
lsrs r7, r0, 24
mov r1, r9
lsls r1, 24
lsrs r1, 24
mov r9, r1
mov r0, r10
adds r1, r7, 0
bl __divsi3
adds r5, r0, 0
lsls r5, 24
lsrs r4, r5, 24
ldr r3, =gUnknown_030012A8
strh r4, [r3]
mov r0, r10
adds r1, r7, 0
str r3, [sp, 0x4]
bl __modsi3
lsls r0, 24
lsrs r2, r0, 24
ldr r3, [sp, 0x4]
strh r2, [r3, 0x2]
movs r1, 0x7
ands r4, r1
ands r2, r1
strh r4, [r3, 0x4]
strh r2, [r3, 0x6]
lsrs r0, 27
lsrs r5, 27
strh r0, [r3, 0x8]
strh r5, [r3, 0xA]
mov r1, r8
lsrs r1, 27
lsls r1, 6
mov r8, r1
mov r1, r8
muls r1, r5
lsls r0, 6
adds r1, r0
lsls r1, 16
lsrs r1, 16
strh r1, [r3, 0xC]
lsls r4, 3
adds r4, r2
adds r1, r4
lsls r4, r1, 16
lsrs r4, 17
strh r1, [r3, 0xE]
movs r1, 0x1
mov r0, r10
ands r1, r0
movs r2, 0x1
eors r1, r2
lsls r0, r1, 2
lsls r6, r0
eors r1, r2
lsls r1, 2
movs r0, 0xF
lsls r0, r1
orrs r6, r0
lsls r6, 24
lsrs r6, 24
mov r1, r9
lsls r1, 5
mov r9, r1
add r9, r4
ldr r1, [sp]
add r1, r9
ldrb r0, [r1]
ands r6, r0
strb r6, [r1]
add sp, 0x8
pop {r3-r5}
mov r8, r3
mov r9, r4
mov r10, r5
pop {r4-r7}
pop {r0}
bx r0
.pool
thumb_func_end sub_81BF2B8
.align 2, 0 @ Don't pad with nop.