decompile decompress.s

19 files changed, 654 insertions, 1057 deletions

diff --git a/asm/battle_7.s b/asm/battle_7.s
index 5f8656664..967816c74 100644
--- a/asm/battle_7.s
+++ b/asm/battle_7.s
@@ -1380,7 +1380,7 @@ _0805DC58:
 	adds r0, r2, 0
 	adds r2, r5, 0
 	adds r3, r6, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	mov r3, r8
 	lsls r2, r3, 4
 	movs r0, 0x80
@@ -1551,7 +1551,7 @@ _0805DE00:
 	ldr r1, [r1]
 	adds r2, r5, 0
 	adds r3, r4, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	b _0805DE46
 	.pool
 _0805DE2C:
@@ -1566,7 +1566,7 @@ _0805DE2C:
 	ldr r1, [r1]
 	adds r2, r5, 0
 	adds r3, r4, 0
-	bl DecompressMonPic_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic
 _0805DE46:
 	mov r2, r8
 	lsls r1, r2, 4
@@ -2447,7 +2447,7 @@ _0805E59C:
 	ldr r3, [r2]
 _0805E5FA:
 	mov r2, r8
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	b _0805E662
 	.pool
 _0805E618:
@@ -2484,7 +2484,7 @@ _0805E618:
 	adds r2, r3
 	ldr r3, [r2]
 	mov r2, r8
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 _0805E662:
 	ldr r0, =gUnknown_020244D4
 	ldr r0, [r0]
diff --git a/asm/contest.s b/asm/contest.s
index 4fffaf316..0701a4799 100644
--- a/asm/contest.s
+++ b/asm/contest.s
@@ -6746,7 +6746,7 @@ sub_80DB174: @ 80DB174
 	ldr r1, [r1, 0x4]
 	adds r2, r5, 0
 	adds r3, r6, 0
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	b _080DB1CC
 	.pool
 _080DB1B8:
@@ -6758,7 +6758,7 @@ _080DB1B8:
 	ldr r1, [r1, 0x4]
 	adds r2, r5, 0
 	adds r3, r6, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 _080DB1CC:
 	adds r0, r5, 0
 	adds r1, r7, 0
diff --git a/asm/contest_link_80F57C4.s b/asm/contest_link_80F57C4.s
index c8040485d..929b3b1c9 100644
--- a/asm/contest_link_80F57C4.s
+++ b/asm/contest_link_80F57C4.s
@@ -1399,7 +1399,7 @@ _080F648C:
 	ldr r1, [r1, 0x8]
 	adds r2, r6, 0
 	adds r3, r4, 0
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	b _080F64F2
 	.pool
 _080F64E0:
@@ -1410,7 +1410,7 @@ _080F64E0:
 	ldr r1, [r1, 0x8]
 	adds r2, r6, 0
 	adds r3, r4, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 _080F64F2:
 	adds r0, r6, 0
 	adds r1, r5, 0
diff --git a/asm/contest_painting.s b/asm/contest_painting.s
index 8498ad9db..156e46050 100644
--- a/asm/contest_painting.s
+++ b/asm/contest_painting.s
@@ -587,7 +587,7 @@ sub_81302E8: @ 81302E8
 	ldr r2, [r6]
 	ldr r3, [r2]
 	adds r2, r5, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	ldr r0, [r4]
 	ldr r0, [r0, 0x8]
 	ldr r1, [r7]
@@ -606,7 +606,7 @@ _08130348:
 	ldr r2, [r6]
 	ldr r3, [r2]
 	adds r2, r5, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	ldr r0, [r4]
 	ldr r0, [r0, 0x4]
 	ldr r1, [r7]
diff --git a/asm/decompress.s b/asm/decompress.s
deleted file mode 100644
index c5630325f..000000000
--- a/asm/decompress.s
+++ /dev/null
@@ -1,1019 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start LZDecompressWram
-@ void LZDecompressWram(void *src, void *dest)
-LZDecompressWram: @ 8034518
-	push {lr}
-	bl LZ77UnCompWram
-	pop {r0}
-	bx r0
-	thumb_func_end LZDecompressWram
-
-	thumb_func_start LZDecompressVram
-@ void LZDecompressVram(void *src, void *dest)
-LZDecompressVram: @ 8034524
-	push {lr}
-	bl LZ77UnCompVram
-	pop {r0}
-	bx r0
-	thumb_func_end LZDecompressVram
-
-	thumb_func_start LoadCompressedObjectPic
-@ u16 LoadCompressedObjectPic(struct obj_tiles *pic)
-LoadCompressedObjectPic: @ 8034530
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r4, r0, 0
-	ldr r0, [r4]
-	ldr r5, =0x0201c000
-	adds r1, r5, 0
-	bl LZ77UnCompWram
-	str r5, [sp]
-	ldrh r1, [r4, 0x6]
-	lsls r1, 16
-	ldrh r0, [r4, 0x4]
-	orrs r0, r1
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpriteSheet
-	lsls r0, 16
-	lsrs r0, 16
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end LoadCompressedObjectPic
-
-	thumb_func_start LoadCompressedObjectPicOverrideBuffer
-@ void LoadCompressedObjectPicOverrideBuffer(struct obj_tiles *pic, void *tempBuffer)
-LoadCompressedObjectPicOverrideBuffer: @ 8034564
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r4, r0, 0
-	adds r5, r1, 0
-	ldr r0, [r4]
-	bl LZ77UnCompWram
-	str r5, [sp]
-	ldrh r1, [r4, 0x6]
-	lsls r1, 16
-	ldrh r0, [r4, 0x4]
-	orrs r0, r1
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpriteSheet
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end LoadCompressedObjectPicOverrideBuffer
-
-	thumb_func_start LoadCompressedObjectPalette
-@ void LoadCompressedObjectPalette(struct TaggedObjectPalette *palette)
-LoadCompressedObjectPalette: @ 803458C
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r5, r0, 0
-	ldr r0, [r5]
-	ldr r4, =0x0201c000
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-	str r4, [sp]
-	ldrh r2, [r5, 0x4]
-	ldr r1, =0xffff0000
-	ldr r0, [sp, 0x4]
-	ands r0, r1
-	orrs r0, r2
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpritePalette
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end LoadCompressedObjectPalette
-
-	thumb_func_start LoadCompressedObjectPaletteOverrideBuffer
-@ void LoadCompressedObjectPaletteOverrideBuffer(struct TaggedObjectPalette *palette, void *tempBuffer)
-LoadCompressedObjectPaletteOverrideBuffer: @ 80345C0
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r5, r0, 0
-	adds r4, r1, 0
-	ldr r0, [r5]
-	bl LZ77UnCompWram
-	str r4, [sp]
-	ldrh r2, [r5, 0x4]
-	ldr r1, =0xffff0000
-	ldr r0, [sp, 0x4]
-	ands r0, r1
-	orrs r0, r2
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpritePalette
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end LoadCompressedObjectPaletteOverrideBuffer
-
-	thumb_func_start DecompressPicFromTable
-@ void DecompressPicFromTable(void **picTable, void *dest, u32 index)
-DecompressPicFromTable: @ 80345F0
-	push {r4,r5,lr}
-	adds r3, r0, 0
-	adds r4, r1, 0
-	adds r5, r2, 0
-	movs r0, 0xCE
-	lsls r0, 1
-	cmp r5, r0
-	ble _08034610
-	ldr r0, =gMonFrontPicTable
-	ldr r0, [r0]
-	bl LZ77UnCompWram
-	b _08034618
-	.pool
-_08034610:
-	ldr r0, [r3]
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-_08034618:
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl DuplicateDeoxysTiles
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end DecompressPicFromTable
-
-	thumb_func_start DecompressMonPic_DetectFrontOrBack
-@ void DecompressMonPic_DetectFrontOrBack(void **picTable, void *dest, u32 speciesId, u32 personality)
-DecompressMonPic_DetectFrontOrBack: @ 8034628
-	push {r4,r5,lr}
-	sub sp, 0x4
-	adds r4, r0, 0
-	adds r5, r1, 0
-	lsls r0, r2, 3
-	ldr r1, =gMonFrontPicTable
-	adds r0, r1
-	movs r1, 0
-	cmp r4, r0
-	bne _0803463E
-	movs r1, 0x1
-_0803463E:
-	str r1, [sp]
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl DecompressMonPic_2
-	add sp, 0x4
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end DecompressMonPic_DetectFrontOrBack
-
-	thumb_func_start DecompressMonPic
-@ void DecompressMonPic(void **picTable, void *dest, u32 speciesId, u32 personality, bool8 isFrontPic)
-DecompressMonPic: @ 8034654
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r6, r0, 0
-	adds r4, r1, 0
-	adds r7, r2, 0
-	adds r5, r3, 0
-	ldr r0, [sp, 0x18]
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	cmp r7, 0xC9
-	bne _080346D0
-	movs r0, 0xC0
-	lsls r0, 18
-	ands r0, r5
-	lsrs r0, 18
-	movs r1, 0xC0
-	lsls r1, 10
-	ands r1, r5
-	lsrs r1, 12
-	orrs r0, r1
-	movs r1, 0xC0
-	lsls r1, 2
-	ands r1, r5
-	lsrs r1, 6
-	orrs r0, r1
-	movs r1, 0x3
-	ands r1, r5
-	orrs r0, r1
-	movs r1, 0x1C
-	bl __umodsi3
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, 0
-	bne _080346A2
-	movs r1, 0xC9
-	b _080346AC
-_080346A2:
-	movs r2, 0xCE
-	lsls r2, 1
-	adds r0, r1, r2
-	lsls r0, 16
-	lsrs r1, r0, 16
-_080346AC:
-	mov r0, r8
-	cmp r0, 0
-	bne _080346C0
-	ldr r0, =gMonBackPicTable
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, [r1]
-	b _080346DC
-	.pool
-_080346C0:
-	ldr r0, =gMonFrontPicTable
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, [r1]
-	b _080346DC
-	.pool
-_080346D0:
-	movs r0, 0xCE
-	lsls r0, 1
-	cmp r7, r0
-	ble _080346E8
-	ldr r0, =gMonFrontPicTable
-	ldr r0, [r0]
-_080346DC:
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-	b _080346F0
-	.pool
-_080346E8:
-	ldr r0, [r6]
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-_080346F0:
-	adds r0, r4, 0
-	adds r1, r7, 0
-	bl DuplicateDeoxysTiles
-	lsls r0, r7, 16
-	lsrs r0, 16
-	adds r1, r5, 0
-	adds r2, r4, 0
-	mov r3, r8
-	bl DrawSpindaSpots
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end DecompressMonPic
-
-	thumb_func_start Unused_LZDecompressWramIndirect
-@ void Unused_LZDecompressWramIndirect(void **src)
-Unused_LZDecompressWramIndirect: @ 8034710
-	push {lr}
-	ldr r0, [r0]
-	bl LZ77UnCompWram
-	pop {r0}
-	bx r0
-	thumb_func_end Unused_LZDecompressWramIndirect
-
-	thumb_func_start sub_803471C
-sub_803471C: @ 803471C
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x24
-	mov r9, r0
-	str r1, [sp]
-	str r2, [sp, 0x4]
-	adds r5, r3, 0
-	movs r0, 0x1
-	mov r1, r9
-	ands r0, r1
-	cmp r0, 0
-	bne _0803473C
-	b _080348D4
-_0803473C:
-	asrs r0, r1, 1
-	adds r0, 0x4
-	lsls r0, 24
-	lsrs r0, 24
-	str r0, [sp, 0x8]
-	movs r0, 0
-	ldr r2, [sp]
-	cmp r0, r2
-	blt _08034750
-	b _08034964
-_08034750:
-	movs r4, 0x8
-	subs r1, r4, r1
-	str r1, [sp, 0x10]
-_08034756:
-	movs r7, 0
-	adds r0, 0x1
-	str r0, [sp, 0x14]
-	ldr r0, [sp, 0x10]
-	cmp r7, r0
-	bge _080347D2
-	ldr r1, [sp, 0x8]
-	lsls r1, 8
-	str r1, [sp, 0x18]
-	movs r2, 0
-	mov r10, r2
-	mov r0, r9
-	movs r4, 0x8
-	subs r0, r4, r0
-	str r0, [sp, 0xC]
-_08034774:
-	movs r3, 0
-	asrs r0, r7, 1
-	adds r1, r7, 0
-	movs r2, 0x1
-	ands r1, r2
-	str r1, [sp, 0x20]
-	lsls r0, 8
-	mov r8, r0
-	mov r12, r5
-_08034786:
-	lsls r1, r3, 5
-	ldr r4, [sp, 0x18]
-	adds r0, r5, r4
-	adds r0, r1
-	mov r1, r8
-	adds r2, r0, r1
-	mov r1, r12
-	add r1, r8
-	movs r6, 0xF
-_08034798:
-	ldr r4, [sp, 0x20]
-	cmp r4, 0
-	bne _080347A8
-	strb r4, [r1]
-	add r4, sp, 0x20
-	ldrb r4, [r4]
-	strb r4, [r2, 0x10]
-	b _080347B6
-_080347A8:
-	mov r0, r10
-	strb r0, [r1, 0x10]
-	movs r4, 0x80
-	lsls r4, 1
-	adds r4, r2, r4
-	str r4, [sp, 0x1C]
-	strb r0, [r4]
-_080347B6:
-	adds r2, 0x1
-	adds r1, 0x1
-	subs r6, 0x1
-	cmp r6, 0
-	bge _08034798
-	movs r0, 0x20
-	add r12, r0
-	adds r3, 0x1
-	cmp r3, 0x7
-	ble _08034786
-	adds r7, 0x1
-	ldr r1, [sp, 0xC]
-	cmp r7, r1
-	blt _08034774
-_080347D2:
-	movs r7, 0
-	movs r2, 0
-_080347D6:
-	movs r6, 0
-	adds r4, r7, 0x1
-	mov r8, r4
-	lsls r4, r7, 5
-_080347DE:
-	adds r0, r6, 0x1
-	mov r10, r0
-	lsls r1, r6, 8
-	adds r0, r1, 0
-	adds r0, 0xC0
-	adds r0, r5, r0
-	adds r0, r4
-	adds r1, r5, r1
-	adds r1, r4
-	movs r3, 0x1F
-_080347F2:
-	strb r2, [r1]
-	strb r2, [r0]
-	adds r0, 0x1
-	adds r1, 0x1
-	subs r3, 0x1
-	cmp r3, 0
-	bge _080347F2
-	mov r6, r10
-	cmp r6, 0x7
-	ble _080347DE
-	mov r7, r8
-	cmp r7, 0x1
-	ble _080347D6
-	mov r1, r9
-	cmp r1, 0x5
-	bne _08034818
-	movs r2, 0x90
-	lsls r2, 1
-	adds r5, r2
-_08034818:
-	movs r7, 0
-	cmp r7, r9
-	bge _080348AE
-_0803481E:
-	movs r3, 0
-	adds r7, 0x1
-	mov r8, r7
-	cmp r3, r9
-	bge _0803488E
-_08034828:
-	adds r3, 0x1
-	mov r10, r3
-	ldr r4, [sp, 0x4]
-	adds r4, 0x20
-	adds r7, r5, 0
-	adds r7, 0x20
-	movs r0, 0x12
-	adds r0, r5
-	mov r12, r0
-	ldr r2, [sp, 0x4]
-	adds r3, r5, 0
-	movs r6, 0x3
-_08034840:
-	ldrb r0, [r2]
-	mov r1, r12
-	strb r0, [r1]
-	ldrb r0, [r2, 0x1]
-	strb r0, [r1, 0x1]
-	ldrb r0, [r2, 0x2]
-	strb r0, [r1, 0x1E]
-	ldrb r0, [r2, 0x3]
-	strb r0, [r1, 0x1F]
-	movs r0, 0x81
-	lsls r0, 1
-	adds r1, r3, r0
-	ldrb r0, [r2, 0x10]
-	strb r0, [r1]
-	ldr r0, =0x00000103
-	adds r1, r3, r0
-	ldrb r0, [r2, 0x11]
-	strb r0, [r1]
-	movs r0, 0x90
-	lsls r0, 1
-	adds r1, r3, r0
-	ldrb r0, [r2, 0x12]
-	strb r0, [r1]
-	ldr r0, =0x00000121
-	adds r1, r3, r0
-	ldrb r0, [r2, 0x13]
-	strb r0, [r1]
-	movs r1, 0x4
-	add r12, r1
-	adds r2, 0x4
-	adds r3, 0x4
-	subs r6, 0x1
-	cmp r6, 0
-	bge _08034840
-	str r4, [sp, 0x4]
-	adds r5, r7, 0
-	mov r3, r10
-	cmp r3, r9
-	blt _08034828
-_0803488E:
-	mov r2, r9
-	cmp r2, 0x7
-	bne _080348A0
-	adds r5, 0x20
-	b _080348A8
-	.pool
-_080348A0:
-	mov r4, r9
-	cmp r4, 0x5
-	bne _080348A8
-	adds r5, 0x60
-_080348A8:
-	mov r7, r8
-	cmp r7, r9
-	blt _0803481E
-_080348AE:
-	mov r0, r9
-	cmp r0, 0x7
-	bne _080348BC
-	movs r1, 0x80
-	lsls r1, 1
-	adds r5, r1
-	b _080348C8
-_080348BC:
-	mov r2, r9
-	cmp r2, 0x5
-	bne _080348C8
-	movs r4, 0xF0
-	lsls r4, 1
-	adds r5, r4
-_080348C8:
-	ldr r0, [sp, 0x14]
-	ldr r1, [sp]
-	cmp r0, r1
-	bge _080348D2
-	b _08034756
-_080348D2:
-	b _08034964
-_080348D4:
-	movs r6, 0
-	ldr r2, [sp]
-	cmp r6, r2
-	bge _08034964
-_080348DC:
-	adds r6, 0x1
-	mov r10, r6
-	mov r4, r9
-	cmp r4, 0x6
-	bne _080348F4
-	movs r0, 0
-	movs r3, 0xFF
-_080348EA:
-	strb r0, [r5]
-	adds r5, 0x1
-	subs r3, 0x1
-	cmp r3, 0
-	bge _080348EA
-_080348F4:
-	movs r7, 0
-	cmp r7, r9
-	bge _08034948
-_080348FA:
-	adds r7, 0x1
-	mov r8, r7
-	mov r1, r9
-	lsls r0, r1, 5
-	cmp r1, 0x6
-	bne _08034914
-	movs r1, 0
-	movs r3, 0x1F
-_0803490A:
-	strb r1, [r5]
-	adds r5, 0x1
-	subs r3, 0x1
-	cmp r3, 0
-	bge _0803490A
-_08034914:
-	adds r1, r0, 0
-	cmp r1, 0
-	ble _0803492E
-	adds r3, r1, 0
-_0803491C:
-	ldr r2, [sp, 0x4]
-	ldrb r0, [r2]
-	strb r0, [r5]
-	adds r2, 0x1
-	str r2, [sp, 0x4]
-	adds r5, 0x1
-	subs r3, 0x1
-	cmp r3, 0
-	bne _0803491C
-_0803492E:
-	mov r4, r9
-	cmp r4, 0x6
-	bne _08034942
-	movs r0, 0
-	movs r3, 0x1F
-_08034938:
-	strb r0, [r5]
-	adds r5, 0x1
-	subs r3, 0x1
-	cmp r3, 0
-	bge _08034938
-_08034942:
-	mov r7, r8
-	cmp r7, r9
-	blt _080348FA
-_08034948:
-	mov r0, r9
-	cmp r0, 0x6
-	bne _0803495C
-	movs r0, 0
-	movs r3, 0xFF
-_08034952:
-	strb r0, [r5]
-	adds r5, 0x1
-	subs r3, 0x1
-	cmp r3, 0
-	bge _08034952
-_0803495C:
-	mov r6, r10
-	ldr r1, [sp]
-	cmp r6, r1
-	blt _080348DC
-_08034964:
-	add sp, 0x24
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_803471C
-
-	thumb_func_start sub_8034974
-sub_8034974: @ 8034974
-	adds r2, r0, 0
-	ldrb r0, [r2, 0x3]
-	lsls r0, 16
-	ldrb r1, [r2, 0x2]
-	lsls r1, 8
-	orrs r0, r1
-	ldrb r1, [r2, 0x1]
-	orrs r0, r1
-	bx lr
-	thumb_func_end sub_8034974
-
-	thumb_func_start LoadCompressedObjectPicUsingHeap
-@ u32 LoadCompressedObjectPicUsingHeap(struct obj_tiles *pic)
-LoadCompressedObjectPicUsingHeap: @ 8034988
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r4, r0, 0
-	ldr r0, [r4]
-	ldr r0, [r0]
-	lsrs r0, 8
-	bl AllocZeroed
-	adds r5, r0, 0
-	ldr r0, [r4]
-	adds r1, r5, 0
-	bl LZ77UnCompWram
-	str r5, [sp]
-	ldrh r1, [r4, 0x6]
-	lsls r1, 16
-	ldrh r0, [r4, 0x4]
-	orrs r0, r1
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpriteSheet
-	adds r0, r5, 0
-	bl Free
-	movs r0, 0
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	thumb_func_end LoadCompressedObjectPicUsingHeap
-
-	thumb_func_start LoadCompressedObjectPaletteUsingHeap
-@ u32 LoadCompressedObjectPaletteUsingHeap(struct TaggedObjectPalette *palette)
-LoadCompressedObjectPaletteUsingHeap: @ 80349C4
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r4, r0, 0
-	ldr r0, [r4]
-	ldr r0, [r0]
-	lsrs r0, 8
-	bl AllocZeroed
-	adds r5, r0, 0
-	ldr r0, [r4]
-	adds r1, r5, 0
-	bl LZ77UnCompWram
-	str r5, [sp]
-	ldrh r2, [r4, 0x4]
-	ldr r1, =0xffff0000
-	ldr r0, [sp, 0x4]
-	ands r0, r1
-	orrs r0, r2
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpritePalette
-	adds r0, r5, 0
-	bl Free
-	movs r0, 0
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end LoadCompressedObjectPaletteUsingHeap
-
-	thumb_func_start DecompressPicFromTable_2
-@ void DecompressPicFromTable_2(void **picTable, void *dest, u32 index)
-DecompressPicFromTable_2: @ 8034A08
-	push {r4,r5,lr}
-	adds r3, r0, 0
-	adds r4, r1, 0
-	adds r5, r2, 0
-	movs r0, 0xCE
-	lsls r0, 1
-	cmp r5, r0
-	ble _08034A28
-	ldr r0, =gMonFrontPicTable
-	ldr r0, [r0]
-	bl LZ77UnCompWram
-	b _08034A30
-	.pool
-_08034A28:
-	ldr r0, [r3]
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-_08034A30:
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl DuplicateDeoxysTiles
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end DecompressPicFromTable_2
-
-	thumb_func_start DecompressMonPic_2
-@ void DecompressMonPic_2(void **picTable, void *dest, u32 speciesId, u32 personality, bool8 isFrontPic)
-DecompressMonPic_2: @ 8034A40
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r6, r0, 0
-	adds r4, r1, 0
-	adds r7, r2, 0
-	adds r5, r3, 0
-	ldr r0, [sp, 0x18]
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	cmp r7, 0xC9
-	bne _08034ABC
-	movs r0, 0xC0
-	lsls r0, 18
-	ands r0, r5
-	lsrs r0, 18
-	movs r1, 0xC0
-	lsls r1, 10
-	ands r1, r5
-	lsrs r1, 12
-	orrs r0, r1
-	movs r1, 0xC0
-	lsls r1, 2
-	ands r1, r5
-	lsrs r1, 6
-	orrs r0, r1
-	movs r1, 0x3
-	ands r1, r5
-	orrs r0, r1
-	movs r1, 0x1C
-	bl __umodsi3
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, 0
-	bne _08034A8E
-	movs r1, 0xC9
-	b _08034A98
-_08034A8E:
-	movs r2, 0xCE
-	lsls r2, 1
-	adds r0, r1, r2
-	lsls r0, 16
-	lsrs r1, r0, 16
-_08034A98:
-	mov r0, r8
-	cmp r0, 0
-	bne _08034AAC
-	ldr r0, =gMonBackPicTable
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, [r1]
-	b _08034AC8
-	.pool
-_08034AAC:
-	ldr r0, =gMonFrontPicTable
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, [r1]
-	b _08034AC8
-	.pool
-_08034ABC:
-	movs r0, 0xCE
-	lsls r0, 1
-	cmp r7, r0
-	ble _08034AD4
-	ldr r0, =gMonFrontPicTable
-	ldr r0, [r0]
-_08034AC8:
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-	b _08034ADC
-	.pool
-_08034AD4:
-	ldr r0, [r6]
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-_08034ADC:
-	adds r0, r4, 0
-	adds r1, r7, 0
-	bl DuplicateDeoxysTiles
-	lsls r0, r7, 16
-	lsrs r0, 16
-	adds r1, r5, 0
-	adds r2, r4, 0
-	mov r3, r8
-	bl DrawSpindaSpots
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end DecompressMonPic_2
-
-	thumb_func_start DecompressMonPic_DetectFrontOrBack_2
-@ void DecompressMonPic_DetectFrontOrBack_2(void **picTable, void *dest, u32 speciesId, u32 personality)
-DecompressMonPic_DetectFrontOrBack_2: @ 8034AFC
-	push {r4,r5,lr}
-	sub sp, 0x4
-	adds r4, r0, 0
-	adds r5, r1, 0
-	lsls r0, r2, 3
-	ldr r1, =gMonFrontPicTable
-	adds r0, r1
-	movs r1, 0
-	cmp r4, r0
-	bne _08034B12
-	movs r1, 0x1
-_08034B12:
-	str r1, [sp]
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl DecompressMonPic_2
-	add sp, 0x4
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end DecompressMonPic_DetectFrontOrBack_2
-
-	thumb_func_start sub_8034B28
-sub_8034B28: @ 8034B28
-	push {lr}
-	adds r3, r0, 0
-	movs r0, 0xCE
-	lsls r0, 1
-	cmp r2, r0
-	ble _08034B44
-	ldr r0, =gMonFrontPicTable
-	ldr r0, [r0]
-	bl LZ77UnCompWram
-	b _08034B4A
-	.pool
-_08034B44:
-	ldr r0, [r3]
-	bl LZ77UnCompWram
-_08034B4A:
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8034B28
-
-	thumb_func_start DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
-@ void DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack(void **picTable, void *dest, u32 speciesId, u32 personality)
-DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack: @ 8034B50
-	push {r4,r5,lr}
-	sub sp, 0x4
-	adds r4, r0, 0
-	adds r5, r1, 0
-	lsls r0, r2, 3
-	ldr r1, =gMonFrontPicTable
-	adds r0, r1
-	movs r1, 0
-	cmp r4, r0
-	bne _08034B66
-	movs r1, 0x1
-_08034B66:
-	str r1, [sp]
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles
-	add sp, 0x4
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
-
-	thumb_func_start DecompressMonPicWithoutDuplicatingDeoxysTiles
-@ void DecompressMonPicWithoutDuplicatingDeoxysTiles(void **picTable, void *dest, u32 speciesId, u32 personality, bool8 isFrontPic)
-DecompressMonPicWithoutDuplicatingDeoxysTiles: @ 8034B7C
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r6, r0, 0
-	adds r5, r1, 0
-	adds r7, r2, 0
-	adds r4, r3, 0
-	ldr r0, [sp, 0x18]
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	cmp r7, 0xC9
-	bne _08034BF8
-	movs r0, 0xC0
-	lsls r0, 18
-	ands r0, r4
-	lsrs r0, 18
-	movs r1, 0xC0
-	lsls r1, 10
-	ands r1, r4
-	lsrs r1, 12
-	orrs r0, r1
-	movs r1, 0xC0
-	lsls r1, 2
-	ands r1, r4
-	lsrs r1, 6
-	orrs r0, r1
-	movs r1, 0x3
-	ands r1, r4
-	orrs r0, r1
-	movs r1, 0x1C
-	bl __umodsi3
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, 0
-	bne _08034BCA
-	movs r1, 0xC9
-	b _08034BD4
-_08034BCA:
-	movs r2, 0xCE
-	lsls r2, 1
-	adds r0, r1, r2
-	lsls r0, 16
-	lsrs r1, r0, 16
-_08034BD4:
-	mov r0, r8
-	cmp r0, 0
-	bne _08034BE8
-	ldr r0, =gMonBackPicTable
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, [r1]
-	b _08034C04
-	.pool
-_08034BE8:
-	ldr r0, =gMonFrontPicTable
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, [r1]
-	b _08034C04
-	.pool
-_08034BF8:
-	movs r0, 0xCE
-	lsls r0, 1
-	cmp r7, r0
-	ble _08034C10
-	ldr r0, =gMonFrontPicTable
-	ldr r0, [r0]
-_08034C04:
-	adds r1, r5, 0
-	bl LZ77UnCompWram
-	b _08034C18
-	.pool
-_08034C10:
-	ldr r0, [r6]
-	adds r1, r5, 0
-	bl LZ77UnCompWram
-_08034C18:
-	lsls r0, r7, 16
-	lsrs r0, 16
-	adds r1, r4, 0
-	adds r2, r5, 0
-	mov r3, r8
-	bl DrawSpindaSpots
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end DecompressMonPicWithoutDuplicatingDeoxysTiles
-
-	thumb_func_start DuplicateDeoxysTiles
-@ void DuplicateDeoxysTiles(void *pointer, u32 speciesId)
-DuplicateDeoxysTiles: @ 8034C30
-	push {lr}
-	adds r3, r0, 0
-	movs r0, 0xCD
-	lsls r0, 1
-	cmp r1, r0
-	bne _08034C4A
-	movs r1, 0x80
-	lsls r1, 4
-	adds r0, r3, r1
-	ldr r2, =0x04000200
-	adds r1, r3, 0
-	bl CpuSet
-_08034C4A:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end DuplicateDeoxysTiles
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/egg_hatch.s b/asm/egg_hatch.s
index 322b20c9d..9c4d75c3e 100644
--- a/asm/egg_hatch.s
+++ b/asm/egg_hatch.s
@@ -409,7 +409,7 @@ _08071688:
 	adds r2, r1
 	ldr r1, [r2]
 	adds r2, r4, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	adds r0, r5, 0
 	bl sub_806E794
 	bl LoadCompressedObjectPalette
diff --git a/asm/link.s b/asm/link.s
index d43b048d2..d8825240f 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -68989,7 +68989,7 @@ _0802CA32:
 	adds r0, r1
 	ldr r3, [r7, 0x8]
 	mov r1, r8
-	bl DecompressMonPic_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic
 	mov r3, r8
 	str r3, [sp, 0x18]
 	adds r4, r6, 0
diff --git a/asm/pokeblock_feed.s b/asm/pokeblock_feed.s
index c2225dcde..8f63be452 100644
--- a/asm/pokeblock_feed.s
+++ b/asm/pokeblock_feed.s
@@ -327,7 +327,7 @@ _08179E48:
 	ldr r1, [r1, 0x8]
 	adds r2, r5, 0
 	adds r3, r4, 0
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	ldr r0, =gUnknown_0203BD18
 	ldr r1, [r0]
 	b _08179F5E
diff --git a/asm/rom_80A5C6C.s b/asm/rom_80A5C6C.s
index 10cdfa068..260635e52 100644
--- a/asm/rom_80A5C6C.s
+++ b/asm/rom_80A5C6C.s
@@ -5236,7 +5236,7 @@ _080A8488:
 	str r2, [sp]
 	adds r2, r6, 0
 	mov r3, r8
-	bl DecompressMonPic_2
+	bl LoadSpecialPokePic_2
 	b _080A8540
 	.pool
 _080A84B0:
@@ -5287,7 +5287,7 @@ _080A850A:
 	str r2, [sp]
 	adds r2, r6, 0
 	mov r3, r8
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles
+	bl LoadSpecialPokePic_DontHandleDeoxys
 	b _080A8540
 	.pool
 _080A8524:
@@ -5303,7 +5303,7 @@ _080A8524:
 	str r2, [sp]
 	adds r2, r6, 0
 	mov r3, r8
-	bl DecompressMonPic_2
+	bl LoadSpecialPokePic_2
 _080A8540:
 	ldr r5, =gUnknown_020244D4
 	ldr r0, [r5]
diff --git a/asm/rom_80C6FA0.s b/asm/rom_80C6FA0.s
index 502b1f33c..0890622f4 100644
--- a/asm/rom_80C6FA0.s
+++ b/asm/rom_80C6FA0.s
@@ -6038,7 +6038,7 @@ sub_80CA44C: @ 80CA44C
 	movs r2, 0x1
 	str r2, [sp]
 	adds r2, r4, 0
-	bl DecompressMonPic
+	bl LoadSpecialPokePic
 	ldr r1, [r6]
 	ldr r2, =0x00000cdc
 	adds r0, r1, r2
diff --git a/asm/rom_8184DA4.s b/asm/rom_8184DA4.s
index e881eb24e..5ed8dadc2 100644
--- a/asm/rom_8184DA4.s
+++ b/asm/rom_8184DA4.s
@@ -14912,7 +14912,7 @@ _0818D03C:
 	adds r1, r5, 0
 	adds r2, r4, 0
 	adds r3, r6, 0
-	bl DecompressMonPic
+	bl LoadSpecialPokePic
 	b _0818D08E
 	.pool
 _0818D050:
@@ -14924,7 +14924,7 @@ _0818D054:
 	adds r1, r5, 0
 	adds r2, r4, 0
 	adds r3, r6, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles
+	bl LoadSpecialPokePic_DontHandleDeoxys
 	b _0818D08E
 	.pool
 _0818D068:
diff --git a/asm/rom_81BAD84.s b/asm/rom_81BAD84.s
index f57840d13..b54e0bc35 100644
--- a/asm/rom_81BAD84.s
+++ b/asm/rom_81BAD84.s
@@ -17398,7 +17398,7 @@ _081C46A6:
 _081C46B0:
 	ldr r1, [r1, 0x8]
 	ldr r3, [r5, 0xC]
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	b _081C4768
 	.pool
 _081C46CC:
@@ -17409,7 +17409,7 @@ _081C46CC:
 	ldr r1, [r3, 0x8]
 _081C46D6:
 	ldr r3, [r5, 0xC]
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	b _081C4768
 	.pool
 _081C46E4:
@@ -17439,7 +17439,7 @@ _081C4700:
 	ldrh r2, [r5, 0x2]
 	ldr r3, [r5, 0xC]
 	adds r0, r4, 0
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	b _081C4768
 	.pool
 _081C472C:
@@ -17454,7 +17454,7 @@ _081C472C:
 	ldrh r2, [r5, 0x2]
 	ldr r3, [r5, 0xC]
 	adds r0, r4, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 	b _081C4768
 	.pool
 _081C4750:
@@ -35972,7 +35972,7 @@ _081CDBD0:
 	str r2, [sp]
 	adds r2, r4, 0
 	adds r3, r5, 0
-	bl DecompressMonPic
+	bl LoadSpecialPokePic
 	adds r0, r4, 0
 	mov r1, r8
 	adds r2, r5, 0
@@ -46848,7 +46848,7 @@ _081D30C4:
 	mov r1, r8
 	adds r2, r4, 0
 	adds r3, r5, 0
-	bl DecompressMonPic
+	bl LoadSpecialPokePic
 	adds r0, r4, 0
 	adds r1, r6, 0
 	adds r2, r5, 0
diff --git a/asm/script_pokemon_util_80F87D8.s b/asm/script_pokemon_util_80F87D8.s
index 6134aebe7..d96287da5 100644
--- a/asm/script_pokemon_util_80F87D8.s
+++ b/asm/script_pokemon_util_80F87D8.s
@@ -715,7 +715,7 @@ _080F8D44:
 	ldr r1, [r1, 0x8]
 	adds r2, r6, 0
 	adds r3, r5, 0
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	b _080F8DD8
 	.pool
 _080F8DC4:
@@ -727,7 +727,7 @@ _080F8DC4:
 	ldr r1, [r1, 0x8]
 	adds r2, r6, 0
 	adds r3, r5, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 _080F8DD8:
 	adds r0, r6, 0
 	mov r1, r8
diff --git a/asm/trade.s b/asm/trade.s
index 3a8e22d08..ef42f25b8 100644
--- a/asm/trade.s
+++ b/asm/trade.s
@@ -7133,7 +7133,7 @@ _0807AD58:
 	ldr r1, [r1, 0x8]
 	adds r2, r5, 0
 	adds r3, r7, 0
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	movs r4, 0
 	b _0807ADB2
 	.pool
@@ -7151,7 +7151,7 @@ _0807AD94:
 	ldr r1, [r2]
 	adds r2, r5, 0
 	adds r3, r7, 0
-	bl DecompressMonPicWithoutDuplicatingDeoxysTiles_DetectFrontOrBack
+	bl HandleLoadSpecialPokePic_DontHandleDeoxys
 _0807ADB2:
 	mov r0, r8
 	bl sub_806E794
@@ -10373,7 +10373,7 @@ _0807CCEE:
 	ldr r1, [r1]
 	ldr r1, [r1, 0x10]
 	ldr r3, [r3, 0x6C]
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	ldr r1, [r7]
 	b _0807CF4C
 	.pool
@@ -12478,7 +12478,7 @@ _0807E13A:
 	ldr r1, [r1]
 	ldr r1, [r1, 0x10]
 	ldr r3, [r3, 0x6C]
-	bl DecompressMonPic_DetectFrontOrBack_2
+	bl HandleLoadSpecialPokePic_2
 	ldr r1, [r7]
 	b _0807E398
 	.pool
diff --git a/include/decompress.h b/include/decompress.h
new file mode 100644
index 000000000..407866667
--- /dev/null
+++ b/include/decompress.h
@@ -0,0 +1,17 @@
+#ifndef GUARD_DECOMPRESS_H
+#define GUARD_DECOMPRESS_H
+
+#include "sprite.h"
+
+void LZDecompressWram(const void *src, void *dest);
+void LZDecompressVram(const void *src, void *dest);
+u16 LoadCompressedObjectPic(const struct CompressedSpriteSheet *src);
+void LoadCompressedObjectPicOverrideBuffer(const struct CompressedSpriteSheet *src, void *buffer);
+void LoadCompressedObjectPalette(const struct CompressedSpritePalette *src);
+void LoadCompressedObjectPaletteOverrideBuffer(const struct CompressedSpritePalette *a, void *buffer);
+void DecompressPicFromTable(const struct CompressedSpriteSheet *src, void* buffer, s32 species);
+void HandleLoadSpecialPokePic(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality);
+void LoadSpecialPokePic_2(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic);
+void LoadSpecialPokePic_DontHandleDeoxys(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic);
+
+#endif // GUARD_DECOMPRESS_H
diff --git a/ld_script.txt b/ld_script.txt
index 7986c7105..c9c35b0ae 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -9,13 +9,10 @@ SECTIONS {
     ewram (NOLOAD) :
     ALIGN(4)
     {
-        gHeap = .;
-
-        . = 0x20000;
 
 <EWRAM>
 
-        . = 0x40000;
+        . = 0x60000;
     }
 
     . = 0x3000000;
@@ -55,7 +52,7 @@ SECTIONS {
         asm/rtc.o(.text);
         asm/main_menu.o(.text);
         asm/rom3.o(.text);
-        asm/decompress.o(.text);
+        src/decompress.o(.text);
         asm/rom_8034C54.o(.text);
         asm/battle_3.o(.text);
         asm/battle_4.o(.text);
diff --git a/src/decompress.c b/src/decompress.c
new file mode 100644
index 000000000..4a5c7a297
--- /dev/null
+++ b/src/decompress.c
@@ -0,0 +1,597 @@
+#include "global.h"
+#include "decompress.h"
+#include "species.h"
+#include "text.h"
+#include "malloc.h"
+
+EWRAM_DATA ALIGNED(4) u8 gDecompressionBuffer[0x4000] = {0};
+
+extern const struct CompressedSpriteSheet gMonFrontPicTable[];
+extern const struct CompressedSpriteSheet gMonBackPicTable[];
+
+extern void DrawSpindaSpots(u16 species, u32 personality, void* dest, bool8 isFrontPic);
+
+static void DuplicateDeoxysTiles(void *pointer, s32 species);
+
+void LZDecompressWram(const void *src, void *dest)
+{
+    LZ77UnCompWram(src, dest);
+}
+
+void LZDecompressVram(const void *src, void *dest)
+{
+    LZ77UnCompVram(src, dest);
+}
+
+u16 LoadCompressedObjectPic(const struct CompressedSpriteSheet *src)
+{
+    struct SpriteSheet dest;
+
+    LZ77UnCompWram(src->data, gDecompressionBuffer);
+    dest.data = gDecompressionBuffer;
+    dest.size = src->size;
+    dest.tag = src->tag;
+    return LoadSpriteSheet(&dest);
+}
+
+void LoadCompressedObjectPicOverrideBuffer(const struct CompressedSpriteSheet *src, void *buffer)
+{
+    struct SpriteSheet dest;
+
+    LZ77UnCompWram(src->data, buffer);
+    dest.data = buffer;
+    dest.size = src->size;
+    dest.tag = src->tag;
+    LoadSpriteSheet(&dest);
+}
+
+void LoadCompressedObjectPalette(const struct CompressedSpritePalette *src)
+{
+    struct SpritePalette dest;
+
+    LZ77UnCompWram(src->data, gDecompressionBuffer);
+    dest.data = (void*) gDecompressionBuffer;
+    dest.tag = src->tag;
+    LoadSpritePalette(&dest);
+}
+
+void LoadCompressedObjectPaletteOverrideBuffer(const struct CompressedSpritePalette *a, void *buffer)
+{
+    struct SpritePalette dest;
+
+    LZ77UnCompWram(a->data, buffer);
+    dest.data = buffer;
+    dest.tag = a->tag;
+    LoadSpritePalette(&dest);
+}
+
+void DecompressPicFromTable(const struct CompressedSpriteSheet *src, void* buffer, s32 species)
+{
+    if (species > SPECIES_EGG)
+        LZ77UnCompWram(gMonFrontPicTable[0].data, buffer);
+    else
+        LZ77UnCompWram(src->data, buffer);
+    DuplicateDeoxysTiles(buffer, species);
+}
+
+void HandleLoadSpecialPokePic(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality)
+{
+    bool8 isFrontPic;
+
+    if (src == &gMonFrontPicTable[species])
+        isFrontPic = TRUE; // frontPic
+    else
+        isFrontPic = FALSE; // backPic
+
+    LoadSpecialPokePic_2(src, dest, species, personality, isFrontPic);
+}
+
+void LoadSpecialPokePic(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic)
+{
+    if (species == SPECIES_UNOWN)
+    {
+        u16 i = (((personality & 0x3000000) >> 18) | ((personality & 0x30000) >> 12) | ((personality & 0x300) >> 6) | (personality & 3)) % 0x1C;
+
+        // The other Unowns are separate from Unown A.
+        if (i == 0)
+            i = SPECIES_UNOWN;
+        else
+            i += SPECIES_UNOWN_B - 1;
+
+        if (!isFrontPic)
+            LZ77UnCompWram(gMonBackPicTable[i].data, dest);
+        else
+            LZ77UnCompWram(gMonFrontPicTable[i].data, dest);
+    }
+    else if (species > SPECIES_EGG) // is species unknown? draw the ? icon
+        LZ77UnCompWram(gMonFrontPicTable[0].data, dest);
+    else
+        LZ77UnCompWram(src->data, dest);
+
+    DuplicateDeoxysTiles(dest, species);
+    DrawSpindaSpots(species, personality, dest, isFrontPic);
+}
+
+void Unused_LZDecompressWramIndirect(const void **src, void *dest)
+{
+    LZ77UnCompWram(*src, dest);
+}
+
+// This one (unused) function is really challenging, won't even try to decompile it.
+__attribute__((naked))
+void sub_803471C()
+{
+    asm(".syntax unified\n\
+        push {r4-r7,lr}\n\
+	mov r7, r10\n\
+	mov r6, r9\n\
+	mov r5, r8\n\
+	push {r5-r7}\n\
+	sub sp, 0x24\n\
+	mov r9, r0\n\
+	str r1, [sp]\n\
+	str r2, [sp, 0x4]\n\
+	adds r5, r3, 0\n\
+	movs r0, 0x1\n\
+	mov r1, r9\n\
+	ands r0, r1\n\
+	cmp r0, 0\n\
+	bne _0803473C\n\
+	b _080348D4\n\
+_0803473C:\n\
+	asrs r0, r1, 1\n\
+	adds r0, 0x4\n\
+	lsls r0, 24\n\
+	lsrs r0, 24\n\
+	str r0, [sp, 0x8]\n\
+	movs r0, 0\n\
+	ldr r2, [sp]\n\
+	cmp r0, r2\n\
+	blt _08034750\n\
+	b _08034964\n\
+_08034750:\n\
+	movs r4, 0x8\n\
+	subs r1, r4, r1\n\
+	str r1, [sp, 0x10]\n\
+_08034756:\n\
+	movs r7, 0\n\
+	adds r0, 0x1\n\
+	str r0, [sp, 0x14]\n\
+	ldr r0, [sp, 0x10]\n\
+	cmp r7, r0\n\
+	bge _080347D2\n\
+	ldr r1, [sp, 0x8]\n\
+	lsls r1, 8\n\
+	str r1, [sp, 0x18]\n\
+	movs r2, 0\n\
+	mov r10, r2\n\
+	mov r0, r9\n\
+	movs r4, 0x8\n\
+	subs r0, r4, r0\n\
+	str r0, [sp, 0xC]\n\
+_08034774:\n\
+	movs r3, 0\n\
+	asrs r0, r7, 1\n\
+	adds r1, r7, 0\n\
+	movs r2, 0x1\n\
+	ands r1, r2\n\
+	str r1, [sp, 0x20]\n\
+	lsls r0, 8\n\
+	mov r8, r0\n\
+	mov r12, r5\n\
+_08034786:\n\
+	lsls r1, r3, 5\n\
+	ldr r4, [sp, 0x18]\n\
+	adds r0, r5, r4\n\
+	adds r0, r1\n\
+	mov r1, r8\n\
+	adds r2, r0, r1\n\
+	mov r1, r12\n\
+	add r1, r8\n\
+	movs r6, 0xF\n\
+_08034798:\n\
+	ldr r4, [sp, 0x20]\n\
+	cmp r4, 0\n\
+	bne _080347A8\n\
+	strb r4, [r1]\n\
+	add r4, sp, 0x20\n\
+	ldrb r4, [r4]\n\
+	strb r4, [r2, 0x10]\n\
+	b _080347B6\n\
+_080347A8:\n\
+	mov r0, r10\n\
+	strb r0, [r1, 0x10]\n\
+	movs r4, 0x80\n\
+	lsls r4, 1\n\
+	adds r4, r2, r4\n\
+	str r4, [sp, 0x1C]\n\
+	strb r0, [r4]\n\
+_080347B6:\n\
+	adds r2, 0x1\n\
+	adds r1, 0x1\n\
+	subs r6, 0x1\n\
+	cmp r6, 0\n\
+	bge _08034798\n\
+	movs r0, 0x20\n\
+	add r12, r0\n\
+	adds r3, 0x1\n\
+	cmp r3, 0x7\n\
+	ble _08034786\n\
+	adds r7, 0x1\n\
+	ldr r1, [sp, 0xC]\n\
+	cmp r7, r1\n\
+	blt _08034774\n\
+_080347D2:\n\
+	movs r7, 0\n\
+	movs r2, 0\n\
+_080347D6:\n\
+	movs r6, 0\n\
+	adds r4, r7, 0x1\n\
+	mov r8, r4\n\
+	lsls r4, r7, 5\n\
+_080347DE:\n\
+	adds r0, r6, 0x1\n\
+	mov r10, r0\n\
+	lsls r1, r6, 8\n\
+	adds r0, r1, 0\n\
+	adds r0, 0xC0\n\
+	adds r0, r5, r0\n\
+	adds r0, r4\n\
+	adds r1, r5, r1\n\
+	adds r1, r4\n\
+	movs r3, 0x1F\n\
+_080347F2:\n\
+	strb r2, [r1]\n\
+	strb r2, [r0]\n\
+	adds r0, 0x1\n\
+	adds r1, 0x1\n\
+	subs r3, 0x1\n\
+	cmp r3, 0\n\
+	bge _080347F2\n\
+	mov r6, r10\n\
+	cmp r6, 0x7\n\
+	ble _080347DE\n\
+	mov r7, r8\n\
+	cmp r7, 0x1\n\
+	ble _080347D6\n\
+	mov r1, r9\n\
+	cmp r1, 0x5\n\
+	bne _08034818\n\
+	movs r2, 0x90\n\
+	lsls r2, 1\n\
+	adds r5, r2\n\
+_08034818:\n\
+	movs r7, 0\n\
+	cmp r7, r9\n\
+	bge _080348AE\n\
+_0803481E:\n\
+	movs r3, 0\n\
+	adds r7, 0x1\n\
+	mov r8, r7\n\
+	cmp r3, r9\n\
+	bge _0803488E\n\
+_08034828:\n\
+	adds r3, 0x1\n\
+	mov r10, r3\n\
+	ldr r4, [sp, 0x4]\n\
+	adds r4, 0x20\n\
+	adds r7, r5, 0\n\
+	adds r7, 0x20\n\
+	movs r0, 0x12\n\
+	adds r0, r5\n\
+	mov r12, r0\n\
+	ldr r2, [sp, 0x4]\n\
+	adds r3, r5, 0\n\
+	movs r6, 0x3\n\
+_08034840:\n\
+	ldrb r0, [r2]\n\
+	mov r1, r12\n\
+	strb r0, [r1]\n\
+	ldrb r0, [r2, 0x1]\n\
+	strb r0, [r1, 0x1]\n\
+	ldrb r0, [r2, 0x2]\n\
+	strb r0, [r1, 0x1E]\n\
+	ldrb r0, [r2, 0x3]\n\
+	strb r0, [r1, 0x1F]\n\
+	movs r0, 0x81\n\
+	lsls r0, 1\n\
+	adds r1, r3, r0\n\
+	ldrb r0, [r2, 0x10]\n\
+	strb r0, [r1]\n\
+	ldr r0, =0x00000103\n\
+	adds r1, r3, r0\n\
+	ldrb r0, [r2, 0x11]\n\
+	strb r0, [r1]\n\
+	movs r0, 0x90\n\
+	lsls r0, 1\n\
+	adds r1, r3, r0\n\
+	ldrb r0, [r2, 0x12]\n\
+	strb r0, [r1]\n\
+	ldr r0, =0x00000121\n\
+	adds r1, r3, r0\n\
+	ldrb r0, [r2, 0x13]\n\
+	strb r0, [r1]\n\
+	movs r1, 0x4\n\
+	add r12, r1\n\
+	adds r2, 0x4\n\
+	adds r3, 0x4\n\
+	subs r6, 0x1\n\
+	cmp r6, 0\n\
+	bge _08034840\n\
+	str r4, [sp, 0x4]\n\
+	adds r5, r7, 0\n\
+	mov r3, r10\n\
+	cmp r3, r9\n\
+	blt _08034828\n\
+_0803488E:\n\
+	mov r2, r9\n\
+	cmp r2, 0x7\n\
+	bne _080348A0\n\
+	adds r5, 0x20\n\
+	b _080348A8\n\
+	.pool\n\
+_080348A0:\n\
+	mov r4, r9\n\
+	cmp r4, 0x5\n\
+	bne _080348A8\n\
+	adds r5, 0x60\n\
+_080348A8:\n\
+	mov r7, r8\n\
+	cmp r7, r9\n\
+	blt _0803481E\n\
+_080348AE:\n\
+	mov r0, r9\n\
+	cmp r0, 0x7\n\
+	bne _080348BC\n\
+	movs r1, 0x80\n\
+	lsls r1, 1\n\
+	adds r5, r1\n\
+	b _080348C8\n\
+_080348BC:\n\
+	mov r2, r9\n\
+	cmp r2, 0x5\n\
+	bne _080348C8\n\
+	movs r4, 0xF0\n\
+	lsls r4, 1\n\
+	adds r5, r4\n\
+_080348C8:\n\
+	ldr r0, [sp, 0x14]\n\
+	ldr r1, [sp]\n\
+	cmp r0, r1\n\
+	bge _080348D2\n\
+	b _08034756\n\
+_080348D2:\n\
+	b _08034964\n\
+_080348D4:\n\
+	movs r6, 0\n\
+	ldr r2, [sp]\n\
+	cmp r6, r2\n\
+	bge _08034964\n\
+_080348DC:\n\
+	adds r6, 0x1\n\
+	mov r10, r6\n\
+	mov r4, r9\n\
+	cmp r4, 0x6\n\
+	bne _080348F4\n\
+	movs r0, 0\n\
+	movs r3, 0xFF\n\
+_080348EA:\n\
+	strb r0, [r5]\n\
+	adds r5, 0x1\n\
+	subs r3, 0x1\n\
+	cmp r3, 0\n\
+	bge _080348EA\n\
+_080348F4:\n\
+	movs r7, 0\n\
+	cmp r7, r9\n\
+	bge _08034948\n\
+_080348FA:\n\
+	adds r7, 0x1\n\
+	mov r8, r7\n\
+	mov r1, r9\n\
+	lsls r0, r1, 5\n\
+	cmp r1, 0x6\n\
+	bne _08034914\n\
+	movs r1, 0\n\
+	movs r3, 0x1F\n\
+_0803490A:\n\
+	strb r1, [r5]\n\
+	adds r5, 0x1\n\
+	subs r3, 0x1\n\
+	cmp r3, 0\n\
+	bge _0803490A\n\
+_08034914:\n\
+	adds r1, r0, 0\n\
+	cmp r1, 0\n\
+	ble _0803492E\n\
+	adds r3, r1, 0\n\
+_0803491C:\n\
+	ldr r2, [sp, 0x4]\n\
+	ldrb r0, [r2]\n\
+	strb r0, [r5]\n\
+	adds r2, 0x1\n\
+	str r2, [sp, 0x4]\n\
+	adds r5, 0x1\n\
+	subs r3, 0x1\n\
+	cmp r3, 0\n\
+	bne _0803491C\n\
+_0803492E:\n\
+	mov r4, r9\n\
+	cmp r4, 0x6\n\
+	bne _08034942\n\
+	movs r0, 0\n\
+	movs r3, 0x1F\n\
+_08034938:\n\
+	strb r0, [r5]\n\
+	adds r5, 0x1\n\
+	subs r3, 0x1\n\
+	cmp r3, 0\n\
+	bge _08034938\n\
+_08034942:\n\
+	mov r7, r8\n\
+	cmp r7, r9\n\
+	blt _080348FA\n\
+_08034948:\n\
+	mov r0, r9\n\
+	cmp r0, 0x6\n\
+	bne _0803495C\n\
+	movs r0, 0\n\
+	movs r3, 0xFF\n\
+_08034952:\n\
+	strb r0, [r5]\n\
+	adds r5, 0x1\n\
+	subs r3, 0x1\n\
+	cmp r3, 0\n\
+	bge _08034952\n\
+_0803495C:\n\
+	mov r6, r10\n\
+	ldr r1, [sp]\n\
+	cmp r6, r1\n\
+	blt _080348DC\n\
+_08034964:\n\
+	add sp, 0x24\n\
+	pop {r3-r5}\n\
+	mov r8, r3\n\
+	mov r9, r4\n\
+	mov r10, r5\n\
+	pop {r4-r7}\n\
+	pop {r0}\n\
+	bx r0\n\
+        .syntax divided");
+}
+
+u32 sub_8034974(void* ptr)
+{
+    u8* ptr_ = (u8*)(ptr);
+    return (ptr_[3] << 16) | (ptr_[2] << 8) | (ptr_[1]);
+}
+
+bool8 LoadCompressedObjectPicUsingHeap(struct CompressedSpriteSheet* src)
+{
+    struct SpriteSheet dest;
+    void* buffer;
+
+    buffer = AllocZeroed(*((u32*)(&src->data[0])) >> 8);
+    LZ77UnCompWram(src->data, buffer);
+
+    dest.data = buffer;
+    dest.size = src->size;
+    dest.tag = src->tag;
+
+    LoadSpriteSheet(&dest);
+    Free(buffer);
+    return FALSE;
+}
+
+bool8 LoadCompressedObjectPaletteUsingHeap(const struct CompressedSpritePalette *src)
+{
+    struct SpritePalette dest;
+    void* buffer;
+
+    buffer = AllocZeroed(*((u32*)(&src->data[0])) >> 8);
+    LZ77UnCompWram(src->data, buffer);
+    dest.data = buffer;
+    dest.tag = src->tag;
+
+    LoadSpritePalette(&dest);
+    Free(buffer);
+    return FALSE;
+}
+
+void DecompressPicFromTable_2(const struct CompressedSpriteSheet *src, void* buffer, s32 species) // a copy of DecompressPicFromTable
+{
+    if (species > SPECIES_EGG)
+        LZ77UnCompWram(gMonFrontPicTable[0].data, buffer);
+    else
+        LZ77UnCompWram(src->data, buffer);
+    DuplicateDeoxysTiles(buffer, species);
+}
+
+void LoadSpecialPokePic_2(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic) // a copy of LoadSpecialPokePic
+{
+    if (species == SPECIES_UNOWN)
+    {
+        u16 i = (((personality & 0x3000000) >> 18) | ((personality & 0x30000) >> 12) | ((personality & 0x300) >> 6) | (personality & 3)) % 0x1C;
+
+        // The other Unowns are separate from Unown A.
+        if (i == 0)
+            i = SPECIES_UNOWN;
+        else
+            i += SPECIES_UNOWN_B - 1;
+
+        if (!isFrontPic)
+            LZ77UnCompWram(gMonBackPicTable[i].data, dest);
+        else
+            LZ77UnCompWram(gMonFrontPicTable[i].data, dest);
+    }
+    else if (species > SPECIES_EGG) // is species unknown? draw the ? icon
+        LZ77UnCompWram(gMonFrontPicTable[0].data, dest);
+    else
+        LZ77UnCompWram(src->data, dest);
+
+    DuplicateDeoxysTiles(dest, species);
+    DrawSpindaSpots(species, personality, dest, isFrontPic);
+}
+
+void HandleLoadSpecialPokePic_2(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality) // a copy of HandleLoadSpecialPokePic
+{
+    bool8 isFrontPic;
+
+    if (src == &gMonFrontPicTable[species])
+        isFrontPic = TRUE; // frontPic
+    else
+        isFrontPic = FALSE; // backPic
+
+    LoadSpecialPokePic_2(src, dest, species, personality, isFrontPic);
+}
+
+void DecompressPicFromTable_DontHandleDeoxys(const struct CompressedSpriteSheet *src, void* buffer, s32 species) // a copy of DecompressPicFromTable
+{
+    if (species > SPECIES_EGG)
+        LZ77UnCompWram(gMonFrontPicTable[0].data, buffer);
+    else
+        LZ77UnCompWram(src->data, buffer);
+}
+
+void HandleLoadSpecialPokePic_DontHandleDeoxys(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality) // a copy of HandleLoadSpecialPokePic
+{
+    bool8 isFrontPic;
+
+    if (src == &gMonFrontPicTable[species])
+        isFrontPic = TRUE; // frontPic
+    else
+        isFrontPic = FALSE; // backPic
+
+    LoadSpecialPokePic_DontHandleDeoxys(src, dest, species, personality, isFrontPic);
+}
+
+void LoadSpecialPokePic_DontHandleDeoxys(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic) // a copy of LoadSpecialPokePic
+{
+    if (species == SPECIES_UNOWN)
+    {
+        u16 i = (((personality & 0x3000000) >> 18) | ((personality & 0x30000) >> 12) | ((personality & 0x300) >> 6) | (personality & 3)) % 0x1C;
+
+        // The other Unowns are separate from Unown A.
+        if (i == 0)
+            i = SPECIES_UNOWN;
+        else
+            i += SPECIES_UNOWN_B - 1;
+
+        if (!isFrontPic)
+            LZ77UnCompWram(gMonBackPicTable[i].data, dest);
+        else
+            LZ77UnCompWram(gMonFrontPicTable[i].data, dest);
+    }
+    else if (species > SPECIES_EGG) // is species unknown? draw the ? icon
+        LZ77UnCompWram(gMonFrontPicTable[0].data, dest);
+    else
+        LZ77UnCompWram(src->data, dest);
+
+    DrawSpindaSpots(species, personality, dest, isFrontPic);
+}
+
+static void DuplicateDeoxysTiles(void *pointer, s32 species)
+{
+    if (species == SPECIES_DEOXYS)
+        CpuCopy32(pointer + 0x800, pointer, 0x800);
+}
diff --git a/src/malloc.c b/src/malloc.c
index fd9dc616a..948303c6f 100644
--- a/src/malloc.c
+++ b/src/malloc.c
@@ -1,5 +1,7 @@
 #include "global.h"
 
+EWRAM_DATA u8 gHeap[0x1C000] = {0};
+
 static void *sHeapStart;
 static u32 sHeapSize;
 
@@ -67,7 +69,7 @@ void *AllocInternal(void *heapStart, u32 size)
 					// size, so split the rest into a separate block.
 					foundBlockSize -= sizeof(struct MemBlock);
 					foundBlockSize -= size;
-					
+
 					splitBlock = (struct MemBlock *)(pos->data + size);
 
 					pos->flag = TRUE;
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 3c132a99c..5ddf1365d 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -1,3 +1,6 @@
+    .include "src/malloc.o"
+    .include "src/decompress.o"
+
 gTrainerId: @ 2020000
 	.space 0x4