matched several functions from pokeem

5 files changed, 151 insertions, 1503 deletions

diff --git a/src/battle_ai_script_commands.c b/src/battle_ai_script_commands.c
index 6343b55cd..485d87a57 100644
--- a/src/battle_ai_script_commands.c
+++ b/src/battle_ai_script_commands.c
@@ -6,6 +6,7 @@
 #include "constants/abilities.h"
 #include "constants/battle_ai.h"
 #include "constants/battle_move_effects.h"
+#include "constants/moves.h"
 
 extern u16 Random(void);
 extern void sub_80C7164(void);
@@ -230,10 +231,7 @@ static const BattleAICmdFunc sBattleAICmdTable[] =
     BattleAICmd_if_not_taunted,              // 0x5D
 };
 
-#ifdef NONMATCHING
-static
-#endif
-const u16 sDiscouragedPowerfulMoveEffects[] =
+static const u16 sDiscouragedPowerfulMoveEffects[] =
 {
     EFFECT_EXPLOSION,
     EFFECT_DREAM_EATER,
@@ -970,331 +968,69 @@ static void BattleAICmd_get_move_power(void)
     gAIScriptPtr += 1;
 }
 
-// still a nonmatching
-#ifdef NONMATCHING
 static void BattleAICmd_is_most_powerful_move(void)
 {
-    int i, j;
-    s32 damages[MAX_MON_MOVES];
+    s32 i, checkedMove;
+    s32 moveDmgs[4];
 
     for (i = 0; sDiscouragedPowerfulMoveEffects[i] != 0xFFFF; i++)
+    {
         if (gBattleMoves[AI_THINKING_STRUCT->moveConsidered].effect == sDiscouragedPowerfulMoveEffects[i])
             break;
+    }
 
     if (gBattleMoves[AI_THINKING_STRUCT->moveConsidered].power > 1
-     && sDiscouragedPowerfulMoveEffects[i] == 0xFFFF)
+        && sDiscouragedPowerfulMoveEffects[i] == 0xFFFF)
     {
         gDynamicBasePower = 0;
-        eDynamicMoveType = 0;
-        eDmgMultiplier = 1;
+        *(&gBattleStruct->dynamicMoveType) = 0;
+        gBattleScripting.dmgMultiplier = 1;
         gMoveResultFlags = 0;
         gCritMultiplier = 1;
 
-        for (i = 0; i < MAX_MON_MOVES; i++)
+        for (checkedMove = 0; checkedMove < MAX_MON_MOVES; checkedMove++)
         {
-            for (j = 0; sDiscouragedPowerfulMoveEffects[j] != 0xFFFF; j++)
-            { // _08108276
-                if (gBattleMoves[gBattleMons[gBankAttacker].moves[i]].effect == sDiscouragedPowerfulMoveEffects[j])
+            for (i = 0; sDiscouragedPowerfulMoveEffects[i] != 0xFFFF; i++)
+            {
+                if (gBattleMoves[gBattleMons[sBattler_AI].moves[checkedMove]].effect == sDiscouragedPowerfulMoveEffects[i])
                     break;
             }
 
-            // _081082BA
-            if (gBattleMons[gBankAttacker].moves[i]
-             && sDiscouragedPowerfulMoveEffects[j] == 0xFFFF
-             && gBattleMoves[gBattleMons[gBankAttacker].moves[i]].power > 1)
+            if (gBattleMons[sBattler_AI].moves[checkedMove] != MOVE_NONE
+                && sDiscouragedPowerfulMoveEffects[i] == 0xFFFF
+                && gBattleMoves[gBattleMons[sBattler_AI].moves[checkedMove]].power > 1)
             {
-                gCurrentMove = gBattleMons[gBankAttacker].moves[i];
-                AI_CalcDmg(gBankAttacker, gBankTarget);
-                TypeCalc(gCurrentMove, gBankAttacker, gBankTarget);
-                damages[i] = (gBattleMoveDamage * AI_THINKING_STRUCT->simulatedRNG[i]) / 100;
-
-                if (damages[i] == 0) // moves always do at least 1 damage.
-                    damages[i] = 1;
+                gCurrentMove = gBattleMons[sBattler_AI].moves[checkedMove];
+                AI_CalcDmg(sBattler_AI, gBattlerTarget);
+                TypeCalc(gCurrentMove, sBattler_AI, gBattlerTarget);
+                moveDmgs[checkedMove] = gBattleMoveDamage * AI_THINKING_STRUCT->simulatedRNG[checkedMove] / 100;
+                if (moveDmgs[checkedMove] == 0)
+                    moveDmgs[checkedMove] = 1;
             }
             else
             {
-                damages[i] = 0;
+                moveDmgs[checkedMove] = 0;
             }
         }
 
-        for (i = 0; i < MAX_MON_MOVES; i++)
-            if (damages[i] > damages[AI_THINKING_STRUCT->movesetIndex])
+        for (checkedMove = 0; checkedMove < MAX_MON_MOVES; checkedMove++)
+        {
+            if (moveDmgs[checkedMove] > moveDmgs[AI_THINKING_STRUCT->movesetIndex])
                 break;
+        }
 
-        if (i == MAX_MON_MOVES)
-            AI_THINKING_STRUCT->funcResult = 2;
+        if (checkedMove == MAX_MON_MOVES)
+            AI_THINKING_STRUCT->funcResult = MOVE_MOST_POWERFUL; // Is the most powerful.
         else
-            AI_THINKING_STRUCT->funcResult = 1;
+            AI_THINKING_STRUCT->funcResult = MOVE_NOT_MOST_POWERFUL; // Not the most powerful.
     }
     else
     {
-        AI_THINKING_STRUCT->funcResult = 0;
+        AI_THINKING_STRUCT->funcResult = MOVE_POWER_DISCOURAGED; // Highly discouraged in terms of power.
     }
 
-    gAIScriptPtr += 1;
+    gAIScriptPtr++;
 }
-#else
-NAKED
-static void BattleAICmd_is_most_powerful_move(void)
-{
-    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, 0x14\n\
-    movs r3, 0\n\
-    ldr r0, _080C80A4 @ =sDiscouragedPowerfulMoveEffects\n\
-    ldrh r1, [r0]\n\
-    ldr r5, _080C80A8 @ =0x0000ffff\n\
-    ldr r6, _080C80AC @ =gBattleMoves\n\
-    ldr r2, _080C80B0 @ =gBattleResources\n\
-    cmp r1, r5\n\
-    beq _080C7FA2\n\
-    ldr r0, [r2]\n\
-    ldr r0, [r0, 0x14]\n\
-    ldrh r1, [r0, 0x2]\n\
-    lsls r0, r1, 1\n\
-    adds r0, r1\n\
-    lsls r0, 2\n\
-    adds r0, r6\n\
-    ldrb r4, [r0]\n\
-    ldr r1, _080C80A4 @ =sDiscouragedPowerfulMoveEffects\n\
-_080C7F92:\n\
-    ldrh r0, [r1]\n\
-    cmp r4, r0\n\
-    beq _080C7FA2\n\
-    adds r1, 0x2\n\
-    adds r3, 0x1\n\
-    ldrh r0, [r1]\n\
-    cmp r0, r5\n\
-    bne _080C7F92\n\
-_080C7FA2:\n\
-    ldr r0, [r2]\n\
-    ldr r0, [r0, 0x14]\n\
-    ldrh r1, [r0, 0x2]\n\
-    lsls r0, r1, 1\n\
-    adds r0, r1\n\
-    lsls r0, 2\n\
-    adds r0, r6\n\
-    ldrb r0, [r0, 0x1]\n\
-    cmp r0, 0x1\n\
-    bhi _080C7FB8\n\
-    b _080C8142\n\
-_080C7FB8:\n\
-    lsls r0, r3, 1\n\
-    ldr r1, _080C80A4 @ =sDiscouragedPowerfulMoveEffects\n\
-    adds r0, r1\n\
-    ldrh r3, [r0]\n\
-    ldr r0, _080C80A8 @ =0x0000ffff\n\
-    cmp r3, r0\n\
-    beq _080C7FC8\n\
-    b _080C8142\n\
-_080C7FC8:\n\
-    ldr r0, _080C80B4 @ =gDynamicBasePower\n\
-    movs r1, 0\n\
-    strh r1, [r0]\n\
-    ldr r0, _080C80B8 @ =gBattleStruct\n\
-    ldr r0, [r0]\n\
-    strb r1, [r0, 0x13]\n\
-    ldr r0, _080C80BC @ =gBattleScripting\n\
-    movs r2, 0x1\n\
-    strb r2, [r0, 0xE]\n\
-    ldr r0, _080C80C0 @ =gMoveResultFlags\n\
-    strb r1, [r0]\n\
-    ldr r0, _080C80C4 @ =gCritMultiplier\n\
-    strb r2, [r0]\n\
-    movs r6, 0\n\
-    mov r9, r3\n\
-    ldr r2, _080C80A4 @ =sDiscouragedPowerfulMoveEffects\n\
-    ldrh r2, [r2]\n\
-    str r2, [sp, 0x10]\n\
-_080C7FEC:\n\
-    movs r3, 0\n\
-    ldr r5, _080C80C8 @ =gBattleMons\n\
-    lsls r4, r6, 1\n\
-    ldr r7, _080C80CC @ =sBattler_AI\n\
-    lsls r0, r6, 2\n\
-    mov r8, r0\n\
-    adds r1, r6, 0x1\n\
-    mov r10, r1\n\
-    ldr r2, [sp, 0x10]\n\
-    cmp r2, r9\n\
-    beq _080C8030\n\
-    ldr r2, _080C80AC @ =gBattleMoves\n\
-    ldrb r1, [r7]\n\
-    movs r0, 0x58\n\
-    muls r0, r1\n\
-    adds r0, r4, r0\n\
-    adds r1, r5, 0\n\
-    adds r1, 0xC\n\
-    adds r0, r1\n\
-    ldrh r1, [r0]\n\
-    lsls r0, r1, 1\n\
-    adds r0, r1\n\
-    lsls r0, 2\n\
-    adds r0, r2\n\
-    ldrb r2, [r0]\n\
-    ldr r1, _080C80A4 @ =sDiscouragedPowerfulMoveEffects\n\
-_080C8020:\n\
-    ldrh r0, [r1]\n\
-    cmp r2, r0\n\
-    beq _080C8030\n\
-    adds r1, 0x2\n\
-    adds r3, 0x1\n\
-    ldrh r0, [r1]\n\
-    cmp r0, r9\n\
-    bne _080C8020\n\
-_080C8030:\n\
-    ldrb r1, [r7]\n\
-    movs r0, 0x58\n\
-    muls r0, r1\n\
-    adds r0, r4, r0\n\
-    adds r1, r5, 0\n\
-    adds r1, 0xC\n\
-    adds r1, r0, r1\n\
-    ldrh r0, [r1]\n\
-    cmp r0, 0\n\
-    beq _080C80DC\n\
-    lsls r0, r3, 1\n\
-    ldr r2, _080C80A4 @ =sDiscouragedPowerfulMoveEffects\n\
-    adds r0, r2\n\
-    ldrh r0, [r0]\n\
-    cmp r0, r9\n\
-    bne _080C80DC\n\
-    ldr r0, _080C80AC @ =gBattleMoves\n\
-    ldrh r2, [r1]\n\
-    lsls r1, r2, 1\n\
-    adds r1, r2\n\
-    lsls r1, 2\n\
-    adds r1, r0\n\
-    ldrb r0, [r1, 0x1]\n\
-    cmp r0, 0x1\n\
-    bls _080C80DC\n\
-    ldr r5, _080C80D0 @ =gCurrentMove\n\
-    strh r2, [r5]\n\
-    ldrb r0, [r7]\n\
-    ldr r4, _080C80D4 @ =gBattlerTarget\n\
-    ldrb r1, [r4]\n\
-    bl AI_CalcDmg\n\
-    ldrh r0, [r5]\n\
-    ldrb r1, [r7]\n\
-    ldrb r2, [r4]\n\
-    bl TypeCalc\n\
-    mov r4, sp\n\
-    add r4, r8\n\
-    ldr r2, _080C80D8 @ =gBattleMoveDamage\n\
-    ldr r0, _080C80B0 @ =gBattleResources\n\
-    ldr r0, [r0]\n\
-    ldr r0, [r0, 0x14]\n\
-    adds r0, 0x18\n\
-    adds r0, r6\n\
-    ldrb r1, [r0]\n\
-    ldr r0, [r2]\n\
-    muls r0, r1\n\
-    movs r1, 0x64\n\
-    bl __divsi3\n\
-    str r0, [r4]\n\
-    cmp r0, 0\n\
-    bne _080C80E4\n\
-    movs r0, 0x1\n\
-    str r0, [r4]\n\
-    b _080C80E4\n\
-    .align 2, 0\n\
-_080C80A4: .4byte sDiscouragedPowerfulMoveEffects\n\
-_080C80A8: .4byte 0x0000ffff\n\
-_080C80AC: .4byte gBattleMoves\n\
-_080C80B0: .4byte gBattleResources\n\
-_080C80B4: .4byte gDynamicBasePower\n\
-_080C80B8: .4byte gBattleStruct\n\
-_080C80BC: .4byte gBattleScripting\n\
-_080C80C0: .4byte gMoveResultFlags\n\
-_080C80C4: .4byte gCritMultiplier\n\
-_080C80C8: .4byte gBattleMons\n\
-_080C80CC: .4byte sBattler_AI\n\
-_080C80D0: .4byte gCurrentMove\n\
-_080C80D4: .4byte gBattlerTarget\n\
-_080C80D8: .4byte gBattleMoveDamage\n\
-_080C80DC:\n\
-    mov r1, sp\n\
-    add r1, r8\n\
-    movs r0, 0\n\
-    str r0, [r1]\n\
-_080C80E4:\n\
-    mov r6, r10\n\
-    cmp r6, 0x3\n\
-    bgt _080C80EC\n\
-    b _080C7FEC\n\
-_080C80EC:\n\
-    movs r6, 0\n\
-    ldr r2, _080C8130 @ =gBattleResources\n\
-    ldr r0, [r2]\n\
-    ldr r0, [r0, 0x14]\n\
-    ldrb r0, [r0, 0x1]\n\
-    lsls r0, 2\n\
-    add r0, sp\n\
-    ldr r1, [sp]\n\
-    ldr r0, [r0]\n\
-    ldr r5, _080C8134 @ =gAIScriptPtr\n\
-    cmp r1, r0\n\
-    bgt _080C8122\n\
-    adds r4, r2, 0\n\
-    mov r3, sp\n\
-_080C8108:\n\
-    adds r3, 0x4\n\
-    adds r6, 0x1\n\
-    cmp r6, 0x3\n\
-    bgt _080C8122\n\
-    ldr r0, [r4]\n\
-    ldr r0, [r0, 0x14]\n\
-    ldrb r0, [r0, 0x1]\n\
-    lsls r0, 2\n\
-    add r0, sp\n\
-    ldr r1, [r3]\n\
-    ldr r0, [r0]\n\
-    cmp r1, r0\n\
-    ble _080C8108\n\
-_080C8122:\n\
-    cmp r6, 0x4\n\
-    bne _080C8138\n\
-    ldr r0, [r2]\n\
-    ldr r1, [r0, 0x14]\n\
-    movs r0, 0x2\n\
-    str r0, [r1, 0x8]\n\
-    b _080C814C\n\
-    .align 2, 0\n\
-_080C8130: .4byte gBattleResources\n\
-_080C8134: .4byte gAIScriptPtr\n\
-_080C8138:\n\
-    ldr r0, [r2]\n\
-    ldr r1, [r0, 0x14]\n\
-    movs r0, 0x1\n\
-    str r0, [r1, 0x8]\n\
-    b _080C814C\n\
-_080C8142:\n\
-    ldr r0, [r2]\n\
-    ldr r1, [r0, 0x14]\n\
-    movs r0, 0\n\
-    str r0, [r1, 0x8]\n\
-    ldr r5, _080C8164 @ =gAIScriptPtr\n\
-_080C814C:\n\
-    ldr r0, [r5]\n\
-    adds r0, 0x1\n\
-    str r0, [r5]\n\
-    add sp, 0x14\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\
-    .align 2, 0\n\
-_080C8164: .4byte gAIScriptPtr\n\
-    .syntax divided\n");
-}
-#endif
 
 static void BattleAICmd_get_move(void)
 {
diff --git a/src/bg.c b/src/bg.c
index 5cbd7658e..027157fa5 100644
--- a/src/bg.c
+++ b/src/bg.c
@@ -605,88 +605,25 @@ u16 Unused_LoadBgPalette(u8 bg, const void *src, u16 size, u16 destOffset)
     return (u8)cursor;
 }
 
-#ifdef NONMATCHING  // Matches everything but r5 and r6 are flipped, rrr
 bool8 IsDma3ManagerBusyWithBgCopy(void)
 {
-    u8 mod;
-    u8 div;
-    s8 reqSpace;
-
     int i;
 
     for (i = 0; i < 0x80; i++)
     {
-        div = i / 0x20;
-        mod = i % 0x20;
+        u8 div = i / 0x20;
+        u8 mod = i % 0x20;
 
-        if ((sDmaBusyBitfield[div] & (1 << mod)) != FALSE)
+        if ((sDmaBusyBitfield[div] & (1 << mod)))
         {
-            reqSpace = CheckForSpaceForDma3Request(i);
+            s8 reqSpace = CheckForSpaceForDma3Request(i);
             if (reqSpace == -1)
-            {
                 return TRUE;
-            }
-
             sDmaBusyBitfield[div] &= ~(1 << mod);
         }
     }
-
     return FALSE;
 }
-#else
-NAKED
-bool8 IsDma3ManagerBusyWithBgCopy(void)
-{
-    asm("push {r4-r7,lr}\n\
-    mov r5, #0\n\
-    mov r7, #0x1\n\
-    neg r7, r7\n\
-_08001ADC:\n\
-    add r0, r5, #0\n\
-    cmp r5, #0\n\
-    bge _08001AE4\n\
-    add r0, #0x1F\n\
-_08001AE4:\n\
-    asr r0, #5\n\
-    lsl r2, r0, #24\n\
-    lsl r0, #5\n\
-    sub r0, r5, r0\n\
-    lsl r0, #24\n\
-    lsr r0, #24\n\
-    ldr r1, =sDmaBusyBitfield\n\
-    lsr r2, #22\n\
-    add r4, r2, r1\n\
-    mov r6, #0x1\n\
-    lsl r6, r0\n\
-    ldr r0, [r4]\n\
-    and r0, r6\n\
-    cmp r0, #0\n\
-    beq _08001B22\n\
-    lsl r0, r5, #16\n\
-    asr r0, #16\n\
-    bl CheckForSpaceForDma3Request\n\
-    lsl r0, #24\n\
-    asr r0, #24\n\
-    cmp r0, r7\n\
-    bne _08001B1C\n\
-    mov r0, #0x1\n\
-    b _08001B2A\n\
-    .pool\n\
-_08001B1C:\n\
-    ldr r0, [r4]\n\
-    bic r0, r6\n\
-    str r0, [r4]\n\
-_08001B22:\n\
-    add r5, #0x1\n\
-    cmp r5, #0x7F\n\
-    ble _08001ADC\n\
-    mov r0, #0\n\
-_08001B2A:\n\
-    pop {r4-r7}\n\
-    pop {r1}\n\
-    bx r1\n");
-}
-#endif // NONMATCHING
 
 void ShowBg(u8 bg)
 {
diff --git a/src/dma3_manager.c b/src/dma3_manager.c
index a06af2781..fb75c0963 100644
--- a/src/dma3_manager.c
+++ b/src/dma3_manager.c
@@ -1,6 +1,13 @@
 #include "global.h"
 #include "dma3.h"
 
+#define MAX_DMA_REQUESTS 128
+
+#define DMA_REQUEST_COPY32 1
+#define DMA_REQUEST_FILL32 2
+#define DMA_REQUEST_COPY16 3
+#define DMA_REQUEST_FILL16 4
+
 static /*IWRAM_DATA*/ struct {
     /* 0x00 */ const u8 *src;
     /* 0x04 */ u8 *dest;
@@ -29,78 +36,50 @@ void ClearDma3Requests(void)
     gDma3ManagerLocked = FALSE;
 }
 
-#ifdef NONMATCHING
 void ProcessDma3Requests(void)
 {
-    // NOTE: the fillerA member of the DMA struct is actually u32 value;
-    u16 total_size;
+    u16 bytesTransferred;
 
     if (gDma3ManagerLocked)
         return;
 
-    total_size = 0;
+    bytesTransferred = 0;
 
     // as long as there are DMA requests to process (unless size or vblank is an issue), do not exit
-    while (gDma3Requests[gDma3RequestCursor].size)
+    while (gDma3Requests[gDma3RequestCursor].size != 0)
     {
-        total_size += gDma3Requests[gDma3RequestCursor].size;
+        bytesTransferred += gDma3Requests[gDma3RequestCursor].size;
 
-        if (total_size > 0xA000)
-            return; // don't do too much at once
-
-        if (REG_VCOUNT > 224)
-            return;// we're about to leave vblank, stop
+        if (bytesTransferred > 40 * 1024)
+            return; // don't transfer more than 40 KiB
+        if (*(u8 *)REG_ADDR_VCOUNT > 224)
+            return; // we're about to leave vblank, stop
 
         switch (gDma3Requests[gDma3RequestCursor].mode)
         {
-        case 1: // regular 32-bit copy
-            // _08000C8C
-            if(gDma3Requests[gDma3RequestCursor].size <= 0x1000)
-            {
-                DmaCopy32(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
-                break;
-            }
-            while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
-            {
-                DmaCopy32(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
-                gDma3Requests[gDma3RequestCursor].src += 0x1000;
-                gDma3Requests[gDma3RequestCursor].dest += 0x1000;
-                gDma3Requests[gDma3RequestCursor].size -= 0x1000;
-            }
-            DmaCopy32(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
+        case DMA_REQUEST_COPY32: // regular 32-bit copy
+            Dma3CopyLarge32_(gDma3Requests[gDma3RequestCursor].src,
+                             gDma3Requests[gDma3RequestCursor].dest,
+                             gDma3Requests[gDma3RequestCursor].size);
             break;
-        case 2: // repeat a single 32-bit value across RAM
-            // _08000CD0
-            while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
-            {
-                DmaFill32(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
-                gDma3Requests[gDma3RequestCursor].dest += 0x1000;
-                gDma3Requests[gDma3RequestCursor].size -= 0x1000;
-            }
-            DmaFill32(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
+        case DMA_REQUEST_FILL32: // repeat a single 32-bit value across RAM
+            Dma3FillLarge32_(gDma3Requests[gDma3RequestCursor].value,
+                             gDma3Requests[gDma3RequestCursor].dest,
+                             gDma3Requests[gDma3RequestCursor].size);
             break;
-        case 3:    // regular 16-bit copy
-             // _08000D3C
-            while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
-            {
-                DmaCopy16(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
-                gDma3Requests[gDma3RequestCursor].src += 0x1000;
-                gDma3Requests[gDma3RequestCursor].dest += 0x1000;
-                gDma3Requests[gDma3RequestCursor].size -= 0x1000;
-            }
-            DmaCopy16(3, gDma3Requests[gDma3RequestCursor].src, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
+        case DMA_REQUEST_COPY16:    // regular 16-bit copy
+            Dma3CopyLarge16_(gDma3Requests[gDma3RequestCursor].src,
+                             gDma3Requests[gDma3RequestCursor].dest,
+                             gDma3Requests[gDma3RequestCursor].size);
             break;
-        case 4: // repeat a single 16-bit value across RAM
-            // _08000D88
-            while (gDma3Requests[gDma3RequestCursor].size > 0x1000)
-            {
-                DmaFill16(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, 0x1000);
-                gDma3Requests[gDma3RequestCursor].dest += 0x1000;
-                gDma3Requests[gDma3RequestCursor].size -= 0x1000;
-            }
-            DmaFill16(3, gDma3Requests[gDma3RequestCursor].value, gDma3Requests[gDma3RequestCursor].dest, gDma3Requests[gDma3RequestCursor].size);
+        case DMA_REQUEST_FILL16: // repeat a single 16-bit value across RAM
+            Dma3FillLarge16_(gDma3Requests[gDma3RequestCursor].value,
+                             gDma3Requests[gDma3RequestCursor].dest,
+                             gDma3Requests[gDma3RequestCursor].size);
             break;
         }
+
+        // Free the request
         gDma3Requests[gDma3RequestCursor].src = NULL;
         gDma3Requests[gDma3RequestCursor].dest = NULL;
         gDma3Requests[gDma3RequestCursor].size = 0;
@@ -108,326 +87,10 @@ void ProcessDma3Requests(void)
         gDma3Requests[gDma3RequestCursor].value = 0;
         gDma3RequestCursor++;
 
-        if (gDma3RequestCursor >= 128) // loop back to the first DMA request
+        if (gDma3RequestCursor >= MAX_DMA_REQUESTS) // loop back to the first DMA request
             gDma3RequestCursor = 0;
     }
 }
-#else
-__attribute__((naked))
-void ProcessDma3Requests(void)
-{
-    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, 0xC\n\
-    ldr r0, =gDma3ManagerLocked\n\
-    ldrb r0, [r0]\n\
-    cmp r0, 0\n\
-    beq _08000C06\n\
-    b _08000E46\n\
-_08000C06:\n\
-    movs r0, 0\n\
-    str r0, [sp, 0x8]\n\
-    ldr r1, =gDma3Requests\n\
-    ldr r2, =gDma3RequestCursor\n\
-    ldrb r0, [r2]\n\
-    lsls r0, 4\n\
-    adds r0, r1\n\
-    ldrh r0, [r0, 0x8]\n\
-    mov r12, r2\n\
-    cmp r0, 0\n\
-    bne _08000C1E\n\
-    b _08000E46\n\
-_08000C1E:\n\
-    mov r8, r1\n\
-    adds r1, 0x4\n\
-    mov r10, r1\n\
-    movs r6, 0x80\n\
-    lsls r6, 5\n\
-    ldr r7, =0x040000D4 @REG_DMA3\n\
-    movs r2, 0\n\
-    mov r9, r2\n\
-_08000C2E:\n\
-    mov r3, r12 @ gDma3RequestCursor\n\
-    ldrb r0, [r3]\n\
-    lsls r5, r0, 4\n\
-    mov r0, r8  @ gDma3Requests\n\
-    adds r1, r5, r0 @ gDma3Requests[gDma3RequestCursor]\n\
-    ldrh r0, [r1, 0x8] @ gDma3Requests[gDma3RequestCursor].size\n\
-    ldr r2, [sp, 0x8]\n\
-    adds r0, r2, r0\n\
-    lsls r0, 16\n\
-    lsrs r0, 16\n\
-    str r0, [sp, 0x8]\n\
-    movs r0, 0xA0\n\
-    lsls r0, 8\n\
-    ldr r3, [sp, 0x8]\n\
-    cmp r3, r0\n\
-    bls _08000C50\n\
-    b _08000E46\n\
-_08000C50:\n\
-    ldr r0, =0x04000006 @REG_VCOUNT\n\
-    ldrb r0, [r0]\n\
-    cmp r0, 0xE0\n\
-    bls _08000C5A\n\
-    b _08000E46\n\
-_08000C5A:\n\
-    ldrh r0, [r1, 0xA]\n\
-    cmp r0, 0x2\n\
-    beq _08000CD0\n\
-    cmp r0, 0x2\n\
-    bgt _08000C80\n\
-    cmp r0, 0x1\n\
-    beq _08000C8C\n\
-    b _08000DF0\n\
-    .pool\n\
-_08000C80:\n\
-    cmp r0, 0x3\n\
-    beq _08000D3C\n\
-    cmp r0, 0x4\n\
-    bne _08000C8A\n\
-    b _08000D88\n\
-_08000C8A:\n\
-    b _08000DF0\n\
-_08000C8C:\n\
-    ldr r3, [r1]\n\
-    mov r2, r10\n\
-    adds r0, r5, r2\n\
-    ldr r2, [r0]\n\
-    ldrh r1, [r1, 0x8]\n\
-    cmp r1, r6\n\
-    bhi _08000CA6\n\
-    str r3, [r7]\n\
-    str r2, [r7, 0x4]\n\
-    lsrs r0, r1, 2\n\
-    movs r1, 0x84\n\
-    lsls r1, 24\n\
-    b _08000DAA\n\
-_08000CA6:\n\
-    ldr r4, =0x040000D4 @REG_DMA3\n\
-    str r3, [r4]\n\
-    str r2, [r4, 0x4]\n\
-    ldr r0, =0x84000400\n\
-    str r0, [r4, 0x8]\n\
-    ldr r0, [r4, 0x8]\n\
-    adds r3, r6\n\
-    adds r2, r6\n\
-    subs r1, r6\n\
-    cmp r1, r6\n\
-    bhi _08000CA6\n\
-    str r3, [r4]\n\
-    str r2, [r4, 0x4]\n\
-    lsrs r0, r1, 2\n\
-    movs r1, 0x84\n\
-    lsls r1, 24\n\
-    b _08000D76\n\
-    .pool\n\
-_08000CD0:\n\
-    mov r3, r10\n\
-    adds r0, r5, r3\n\
-    ldr r4, [r0]\n\
-    ldrh r1, [r1, 0x8]\n\
-    cmp r1, r6\n\
-    bhi _08000CF4\n\
-    mov r0, r8\n\
-    adds r0, 0xC\n\
-    adds r0, r5, r0\n\
-    ldr r0, [r0]\n\
-    str r0, [sp]\n\
-    mov r5, sp\n\
-    str r5, [r7]\n\
-    str r4, [r7, 0x4]\n\
-    lsrs r0, r1, 2\n\
-    movs r1, 0x85\n\
-    lsls r1, 24\n\
-    b _08000DAA\n\
-_08000CF4:\n\
-    mov r2, r12\n\
-    ldrb r0, [r2]\n\
-    lsls r0, 4\n\
-    mov r5, r8\n\
-    adds r5, 0xC\n\
-    adds r0, r5\n\
-    ldr r0, [r0]\n\
-    str r0, [sp]\n\
-    ldr r3, =0x040000D4 @REG_DMA3\n\
-    mov r0, sp\n\
-    str r0, [r3]\n\
-    str r4, [r3, 0x4]\n\
-    ldr r0, =0x85000400\n\
-    str r0, [r3, 0x8]\n\
-    ldr r0, [r3, 0x8]\n\
-    adds r4, r6\n\
-    subs r1, r6\n\
-    cmp r1, r6\n\
-    bhi _08000CF4\n\
-    ldrb r0, [r2]\n\
-    lsls r0, 4\n\
-    adds r0, r5\n\
-    ldr r0, [r0]\n\
-    str r0, [sp]\n\
-    mov r2, sp\n\
-    str r2, [r3]\n\
-    str r4, [r3, 0x4]\n\
-    lsrs r0, r1, 2\n\
-    movs r1, 0x85\n\
-    lsls r1, 24\n\
-    b _08000DEA\n\
-    .pool\n\
-_08000D3C:\n\
-    ldr r3, [r1]\n\
-    mov r2, r10\n\
-    adds r0, r5, r2\n\
-    ldr r2, [r0]\n\
-    ldrh r1, [r1, 0x8]\n\
-    cmp r1, r6\n\
-    bhi _08000D56\n\
-    str r3, [r7]\n\
-    str r2, [r7, 0x4]\n\
-    lsrs r0, r1, 1\n\
-    movs r1, 0x80\n\
-    lsls r1, 24\n\
-    b _08000DAA\n\
-_08000D56:\n\
-    ldr r4, =0x040000D4 @REG_DMA3\n\
-    str r3, [r4]\n\
-    str r2, [r4, 0x4]\n\
-    ldr r0, =0x80000800\n\
-    str r0, [r4, 0x8]\n\
-    ldr r0, [r4, 0x8]\n\
-    adds r3, r6\n\
-    adds r2, r6\n\
-    subs r1, r6\n\
-    cmp r1, r6\n\
-    bhi _08000D56\n\
-    str r3, [r4]\n\
-    str r2, [r4, 0x4]\n\
-    lsrs r0, r1, 1\n\
-    movs r1, 0x80\n\
-    lsls r1, 24\n\
-_08000D76:\n\
-    orrs r0, r1\n\
-    str r0, [r4, 0x8]\n\
-    ldr r0, [r4, 0x8]\n\
-    b _08000DF0\n\
-    .pool\n\
-_08000D88:\n\
-    mov r3, r10\n\
-    adds r0, r5, r3\n\
-    ldr r2, [r0]\n\
-    ldrh r4, [r1, 0x8]\n\
-    add r1, sp, 0x4\n\
-    cmp r4, r6\n\
-    bhi _08000DB2\n\
-    mov r0, r8\n\
-    adds r0, 0xC\n\
-    adds r0, r5, r0\n\
-    ldr r0, [r0]\n\
-    strh r0, [r1]\n\
-    str r1, [r7]\n\
-    str r2, [r7, 0x4]\n\
-    lsrs r0, r4, 1\n\
-    movs r1, 0x81\n\
-    lsls r1, 24\n\
-_08000DAA:\n\
-    orrs r0, r1\n\
-    str r0, [r7, 0x8]\n\
-    ldr r0, [r7, 0x8]\n\
-    b _08000DF0\n\
-_08000DB2:\n\
-    mov r5, r12\n\
-    ldrb r0, [r5]\n\
-    lsls r0, 4\n\
-    ldr r3, =gDma3Requests + 0x0C\n\
-    adds r0, r3\n\
-    ldr r0, [r0]\n\
-    strh r0, [r1]\n\
-    ldr r3, =0x040000D4 @REG_DMA3\n\
-    str r1, [r3]\n\
-    str r2, [r3, 0x4]\n\
-    ldr r0, =0x81000800\n\
-    str r0, [r3, 0x8]\n\
-    ldr r0, [r3, 0x8]\n\
-    adds r2, r6\n\
-    subs r4, r6\n\
-    cmp r4, r6\n\
-    bhi _08000DB2\n\
-    ldrb r0, [r5]\n\
-    lsls r0, 4\n\
-    ldr r5, =gDma3Requests + 0x0C\n\
-    adds r0, r5\n\
-    ldr r0, [r0]\n\
-    strh r0, [r1]\n\
-    str r1, [r3]\n\
-    str r2, [r3, 0x4]\n\
-    lsrs r0, r4, 1\n\
-    movs r1, 0x81\n\
-    lsls r1, 24\n\
-_08000DEA:\n\
-    orrs r0, r1\n\
-    str r0, [r3, 0x8]\n\
-    ldr r0, [r3, 0x8]\n\
-_08000DF0:\n\
-    ldr r1, =gDma3Requests\n\
-    mov r3, r12\n\
-    ldrb r0, [r3]\n\
-    lsls r0, 4\n\
-    adds r0, r1\n\
-    mov r2, r9\n\
-    str r2, [r0]\n\
-    ldrb r0, [r3]\n\
-    lsls r0, 4\n\
-    add r0, r10\n\
-    str r2, [r0]\n\
-    ldrb r0, [r3]\n\
-    lsls r0, 4\n\
-    adds r0, r1\n\
-    movs r4, 0\n\
-    strh r2, [r0, 0x8]\n\
-    ldrb r0, [r3]\n\
-    lsls r0, 4\n\
-    adds r0, r1\n\
-    mov r5, r9\n\
-    strh r5, [r0, 0xA]\n\
-    ldrb r0, [r3]\n\
-    lsls r0, 4\n\
-    adds r1, 0xC\n\
-    adds r0, r1\n\
-    mov r1, r9\n\
-    str r1, [r0]\n\
-    ldrb r0, [r3]\n\
-    adds r0, 0x1\n\
-    strb r0, [r3]\n\
-    lsls r0, 24\n\
-    cmp r0, 0\n\
-    bge _08000E34\n\
-    strb r4, [r3]\n\
-_08000E34:\n\
-    mov r2, r12\n\
-    ldrb r0, [r2]\n\
-    lsls r0, 4\n\
-    ldr r3, =gDma3Requests\n\
-    adds r0, r3\n\
-    ldrh r0, [r0, 0x8]\n\
-    cmp r0, 0\n\
-    beq _08000E46\n\
-    b _08000C2E\n\
-_08000E46:\n\
-    add sp, 0xC\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\
-    .pool\n\
-    .syntax divided");
-}
-#endif
 
 s16 RequestDma3Copy(const void *src, void *dest, u16 size, u8 mode)
 {
diff --git a/src/sprite.c b/src/sprite.c
index 60bcd1da4..c1fc89777 100644
--- a/src/sprite.c
+++ b/src/sprite.c
@@ -250,12 +250,26 @@ static const AffineAnimCmdFunc sAffineAnimCmdFuncs[] =
     AffineAnimCmd_frame,
 };
 
-static const s32 gUnknown_082EC6F4[24] =
+static const s32 sUnknown_082EC6F4[3][4][2] =
 {
-    8,      8,      0x10,   0x10,   0x20,   0x20,
-    0x40,   0x40,   0x10,   8,      0x20,   8,
-    0x20,   0x10,   0x40,   0x20,   8,      0x10,
-    8,      0x20,   0x10,   0x20,   0x20,   0x40,
+    {
+        {8, 8},
+        {0x10, 0x10},
+        {0x20, 0x20},
+        {0x40, 0x40},
+    },
+    {
+        {0x10, 8},
+        {0x20, 8},
+        {0x20, 0x10},
+        {0x40, 0x20},
+    },
+    {
+        {8, 0x10},
+        {8, 0x20},
+        {0x10, 0x20},
+        {0x20, 0x40},
+    },
 };
 
 static const struct OamDimensions sOamDimensions[3][4] =
@@ -1227,106 +1241,26 @@ s32 sub_800800C(s32 a0, s32 a1, s32 a2)
     return a2 - ((u32)(a2 * a1) / (u32)(a0) + var1);
 }
 
-#ifdef NONMATCHING
-void obj_update_pos2(struct Sprite* sprite, s32 a1, s32 a2)
+void obj_update_pos2(struct Sprite *sprite, s32 a1, s32 a2)
 {
     s32 var0, var1, var2;
-    u8 matrixNum = sprite->oam.matrixNum;
+
+    u32 matrixNum = sprite->oam.matrixNum;
     if (a1 != 0x800)
     {
-        var0 = gUnknown_082EC6F4[sprite->oam.size * 8 + sprite->oam.shape * 32];
+        var0 = sUnknown_082EC6F4[sprite->oam.shape][sprite->oam.size][0];
         var1 = var0 << 8;
         var2 = (var0 << 16) / gOamMatrices[matrixNum].a;
         sprite->pos2.x = sub_800800C(var1, var2, a1);
     }
     if (a2 != 0x800)
     {
-        var0 = gUnknown_082EC6F4[4 + (sprite->oam.size * 8 + sprite->oam.shape * 32)];
+        var0 = sUnknown_082EC6F4[sprite->oam.shape][sprite->oam.size][1];
         var1 = var0 << 8;
         var2 = (var0 << 16) / gOamMatrices[matrixNum].d;
         sprite->pos2.y = sub_800800C(var1, var2, a2);
     }
 }
-#else
-__attribute__((naked))
-void obj_update_pos2(struct Sprite* sprite, s32 a1, s32 a2)
-{
-    asm(".syntax unified\n\
-	push {r4-r7,lr}\n\
-	mov r7, r9\n\
-	mov r6, r8\n\
-	push {r6,r7}\n\
-	adds r5, r0, 0\n\
-	adds r6, r1, 0\n\
-	mov r8, r2\n\
-	ldrb r1, [r5, 0x3]\n\
-	lsls r0, r1, 26\n\
-	lsrs r7, r0, 27\n\
-	movs r0, 0x80\n\
-	lsls r0, 4\n\
-	mov r9, r0\n\
-	cmp r6, r9\n\
-	beq _08007EA2\n\
-	ldr r2, =gUnknown_082EC6F4\n\
-	lsrs r1, 6\n\
-	lsls r1, 3\n\
-	ldrb r0, [r5, 0x1]\n\
-	lsrs r0, 6\n\
-	lsls r0, 5\n\
-	adds r1, r0\n\
-	adds r1, r2\n\
-	ldr r0, [r1]\n\
-	lsls r4, r0, 8\n\
-	lsls r0, 16\n\
-	ldr r2, =gOamMatrices\n\
-	lsls r1, r7, 3\n\
-	adds r1, r2\n\
-	movs r2, 0\n\
-	ldrsh r1, [r1, r2]\n\
-	bl __divsi3\n\
-	adds r1, r0, 0\n\
-	adds r0, r4, 0\n\
-	adds r2, r6, 0\n\
-	bl sub_800800C\n\
-	strh r0, [r5, 0x24]\n\
-_08007EA2:\n\
-	cmp r8, r9\n\
-	beq _08007EDA\n\
-	ldr r2, =gUnknown_082EC6F4\n\
-	ldrb r1, [r5, 0x3]\n\
-	lsrs r1, 6\n\
-	lsls r1, 3\n\
-	ldrb r0, [r5, 0x1]\n\
-	lsrs r0, 6\n\
-	lsls r0, 5\n\
-	adds r1, r0\n\
-	adds r2, 0x4\n\
-	adds r1, r2\n\
-	ldr r0, [r1]\n\
-	lsls r4, r0, 8\n\
-	lsls r0, 16\n\
-	ldr r2, =gOamMatrices\n\
-	lsls r1, r7, 3\n\
-	adds r1, r2\n\
-	movs r2, 0x6\n\
-	ldrsh r1, [r1, r2]\n\
-	bl __divsi3\n\
-	adds r1, r0, 0\n\
-	adds r0, r4, 0\n\
-	mov r2, r8\n\
-	bl sub_800800C\n\
-	strh r0, [r5, 0x26]\n\
-_08007EDA:\n\
-	pop {r3,r4}\n\
-	mov r8, r3\n\
-	mov r9, r4\n\
-	pop {r4-r7}\n\
-	pop {r0}\n\
-	bx r0\n\
-	.pool\n\
-        .syntax divided");
-}
-#endif // NONMATCHING
 
 void SetSpriteOamFlipBits(struct Sprite *sprite, u8 hFlip, u8 vFlip)
 {
diff --git a/src/window.c b/src/window.c
index 4c302885c..5ccd05f35 100644
--- a/src/window.c
+++ b/src/window.c
@@ -378,696 +378,74 @@ void FillWindowPixelBuffer(u8 windowId, u8 fillValue)
     CpuFastFill8(fillValue, gWindows[windowId].tileData, 0x20 * fillSize);
 }
 
-// functionally equivalent, its fucking hard to match
-#ifdef NONMATCHING
+#define MOVE_TILES_DOWN(a)                                                      \
+{                                                                               \
+    destOffset = i + (a);                                                       \
+    srcOffset = i + (((width * (distanceLoop & ~7)) | (distanceLoop & 7)) * 4); \
+    if (srcOffset < size)                                                       \
+        *(u32*)(tileData + destOffset) = *(u32*)(tileData + srcOffset);         \
+    else                                                                        \
+        *(u32*)(tileData + destOffset) = fillValue32;                           \
+    distanceLoop++;                                                             \
+}
+
+#define MOVE_TILES_UP(a)                                                        \
+{                                                                               \
+    destOffset = i + (a);                                                       \
+    srcOffset = i + (((width * (distanceLoop & ~7)) | (distanceLoop & 7)) * 4); \
+    if (srcOffset < size)                                                       \
+        *(u32*)(tileData - destOffset) = *(u32*)(tileData - srcOffset);         \
+    else                                                                        \
+        *(u32*)(tileData - destOffset) = fillValue32;                           \
+    distanceLoop++;                                                             \
+}
+
 void ScrollWindow(u8 windowId, u8 direction, u8 distance, u8 fillValue)
 {
-    s32 i, id1, id2, size;
-    u32 distanceLoop, toFill, width;
-    u8 *tileData;
-    struct WindowTemplate window;
-
-    tileData = gWindows[windowId].tileData;
-    toFill = (fillValue << 0x18) | (fillValue << 0x10) | (fillValue << 8) | fillValue;
-    window = gWindows[windowId].window;
-    size = 0x20 * (window.height * window.width);
-    width = window.width;
-    if (direction != 1)
+    struct WindowTemplate window = gWindows[windowId].window;
+    u8 *tileData = gWindows[windowId].tileData;
+    u32 fillValue32 = (fillValue << 24) | (fillValue << 16) | (fillValue << 8) | fillValue;
+    s32 size = window.height * window.width * 32;
+    u32 width = window.width;
+    s32 i;
+    s32 srcOffset, destOffset;
+    u32 distanceLoop;
+
+    switch (direction)
     {
-        s32 signedDirection = direction;
-        if (signedDirection <= 1)
+    case 0:
+        for (i = 0; i < size; i += 32)
         {
-            if (signedDirection == 0)
-            {
-                for (i = 0; i < size; i += 0x20)
-                {
-                    distanceLoop = distance;
-                    id1 = i + 0;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 4;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 8;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 12;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 16;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 20;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 24;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-
-                    distanceLoop++;
-                    id1 = i + 28;
-                    id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-                    if (id2 < size)
-                        *(u32*)(tileData + id1) = *(u32*)(tileData + id2);
-                    else
-                        *(u32*)(tileData + id1) = toFill;
-                }
-            }
+            distanceLoop = distance;
+            MOVE_TILES_DOWN(0)
+            MOVE_TILES_DOWN(4)
+            MOVE_TILES_DOWN(8)
+            MOVE_TILES_DOWN(12)
+            MOVE_TILES_DOWN(16)
+            MOVE_TILES_DOWN(20)
+            MOVE_TILES_DOWN(24)
+            MOVE_TILES_DOWN(28)
         }
-    }
-    else
-    {
+        break;
+    case 1:
         tileData += size - 4;
-        for (i = 0; i < size; i += 0x20)
+        for (i = 0; i < size; i += 32)
         {
             distanceLoop = distance;
-            id1 = i + 0;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 4;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 8;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 12;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 16;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 20;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 24;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
-
-            distanceLoop++;
-            id1 = i + 28;
-            id2 = i + (((width * ((distanceLoop) & ~(7))) | ((distanceLoop) & 7)) * 4);
-            if (id2 < size)
-                *(u32*)(tileData - id1) = *(u32*)(tileData - id2);
-            else
-                *(u32*)(tileData - id1)  = toFill;
+            MOVE_TILES_UP(0)
+            MOVE_TILES_UP(4)
+            MOVE_TILES_UP(8)
+            MOVE_TILES_UP(12)
+            MOVE_TILES_UP(16)
+            MOVE_TILES_UP(20)
+            MOVE_TILES_UP(24)
+            MOVE_TILES_UP(28)
         }
+        break;
+    case 2:
+        break;
     }
 }
-#else
-__attribute__((naked))
-void ScrollWindow(u8 windowId, u8 direction, u8 distance, u8 fillValue)
-{
-    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, 0x8\n\
-	lsls r0, 24\n\
-	lsrs r0, 24\n\
-	lsls r1, 24\n\
-	lsrs r1, 24\n\
-	mov r8, r1\n\
-	lsls r2, 24\n\
-	lsrs r2, 24\n\
-	str r2, [sp]\n\
-	lsls r3, 24\n\
-	lsrs r3, 24\n\
-	ldr r2, =gWindows\n\
-	lsls r1, r0, 1\n\
-	adds r1, r0\n\
-	lsls r1, 2\n\
-	adds r4, r1, r2\n\
-	adds r2, 0x8\n\
-	adds r1, r2\n\
-	ldr r5, [r1]\n\
-	lsls r7, r3, 24\n\
-	lsls r0, r3, 16\n\
-	orrs r7, r0\n\
-	lsls r0, r3, 8\n\
-	orrs r7, r0\n\
-	orrs r7, r3\n\
-	ldr r1, [r4]\n\
-	ldr r2, [r4, 0x4]\n\
-	ldrb r3, [r4, 0x4]\n\
-	lsrs r0, r1, 24\n\
-	muls r0, r3\n\
-	lsls r6, r0, 5\n\
-	lsrs r1, 24\n\
-	mov r12, r1\n\
-	mov r0, r8\n\
-	cmp r0, 0x1\n\
-	bne _08003CE8\n\
-	b _08003E9E\n\
-_08003CE8:\n\
-	cmp r0, 0x1\n\
-	ble _08003CEE\n\
-	b _08004046\n\
-_08003CEE:\n\
-	cmp r0, 0\n\
-	beq _08003CF4\n\
-	b _08004046\n\
-_08003CF4:\n\
-	movs r4, 0\n\
-	cmp r4, r6\n\
-	blt _08003CFC\n\
-	b _08004046\n\
-_08003CFC:\n\
-	movs r1, 0x8\n\
-	negs r1, r1\n\
-	mov r9, r1\n\
-	movs r2, 0x7\n\
-	mov r8, r2\n\
-	mov r10, r5\n\
-_08003D08:\n\
-	ldr r3, [sp]\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	adds r0, r3, 0\n\
-	mov r2, r8\n\
-	ands r0, r2\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003D34\n\
-	adds r0, r5, r1\n\
-	ldr r0, [r0]\n\
-	mov r1, r10\n\
-	str r0, [r1]\n\
-	b _08003D38\n\
-	.pool\n\
-_08003D34:\n\
-	mov r2, r10\n\
-	str r7, [r2]\n\
-_08003D38:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0x4\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003D64\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003D68\n\
-_08003D64:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003D68:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x8\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003D96\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003D9A\n\
-_08003D96:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003D9A:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0xC\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003DC8\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003DCC\n\
-_08003DC8:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003DCC:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x10\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003DFA\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003DFE\n\
-_08003DFA:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003DFE:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x14\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003E2C\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003E30\n\
-_08003E2C:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003E30:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x18\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003E5E\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003E62\n\
-_08003E5E:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003E62:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x1C\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	adds r0, r1, 0\n\
-	mov r1, r8\n\
-	ands r3, r1\n\
-	orrs r0, r3\n\
-	lsls r0, 2\n\
-	adds r1, r4, r0\n\
-	cmp r1, r6\n\
-	bge _08003E8C\n\
-	adds r0, r5, r2\n\
-	adds r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003E90\n\
-_08003E8C:\n\
-	adds r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003E90:\n\
-	movs r2, 0x20\n\
-	add r10, r2\n\
-	adds r4, 0x20\n\
-	cmp r4, r6\n\
-	bge _08003E9C\n\
-	b _08003D08\n\
-_08003E9C:\n\
-	b _08004046\n\
-_08003E9E:\n\
-	subs r0, r6, 0x4\n\
-	adds r5, r0\n\
-	movs r4, 0\n\
-	cmp r4, r6\n\
-	blt _08003EAA\n\
-	b _08004046\n\
-_08003EAA:\n\
-	movs r0, 0x8\n\
-	negs r0, r0\n\
-	mov r9, r0\n\
-	movs r1, 0x7\n\
-	mov r8, r1\n\
-	mov r10, r5\n\
-_08003EB6:\n\
-	ldr r3, [sp]\n\
-	adds r0, r3, 0\n\
-	mov r2, r9\n\
-	ands r0, r2\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	adds r0, r3, 0\n\
-	mov r2, r8\n\
-	ands r0, r2\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003EDC\n\
-	subs r0, r5, r1\n\
-	ldr r0, [r0]\n\
-	mov r1, r10\n\
-	str r0, [r1]\n\
-	b _08003EE0\n\
-_08003EDC:\n\
-	mov r2, r10\n\
-	str r7, [r2]\n\
-_08003EE0:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0x4\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003F0C\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003F10\n\
-_08003F0C:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003F10:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x8\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003F3E\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003F42\n\
-_08003F3E:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003F42:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0xC\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003F70\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003F74\n\
-_08003F70:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003F74:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x10\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003FA2\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003FA6\n\
-_08003FA2:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003FA6:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x14\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08003FD4\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08003FD8\n\
-_08003FD4:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_08003FD8:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x18\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	str r1, [sp, 0x4]\n\
-	adds r0, r3, 0\n\
-	mov r1, r8\n\
-	ands r0, r1\n\
-	ldr r1, [sp, 0x4]\n\
-	orrs r1, r0\n\
-	lsls r1, 2\n\
-	adds r1, r4, r1\n\
-	cmp r1, r6\n\
-	bge _08004006\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _0800400A\n\
-_08004006:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_0800400A:\n\
-	adds r3, 0x1\n\
-	adds r2, r4, 0\n\
-	adds r2, 0x1C\n\
-	adds r0, r3, 0\n\
-	mov r1, r9\n\
-	ands r0, r1\n\
-	mov r1, r12\n\
-	muls r1, r0\n\
-	adds r0, r1, 0\n\
-	mov r1, r8\n\
-	ands r3, r1\n\
-	orrs r0, r3\n\
-	lsls r0, 2\n\
-	adds r1, r4, r0\n\
-	cmp r1, r6\n\
-	bge _08004034\n\
-	subs r0, r5, r2\n\
-	subs r1, r5, r1\n\
-	ldr r1, [r1]\n\
-	str r1, [r0]\n\
-	b _08004038\n\
-_08004034:\n\
-	subs r0, r5, r2\n\
-	str r7, [r0]\n\
-_08004038:\n\
-	movs r2, 0x20\n\
-	negs r2, r2\n\
-	add r10, r2\n\
-	adds r4, 0x20\n\
-	cmp r4, r6\n\
-	bge _08004046\n\
-	b _08003EB6\n\
-_08004046:\n\
-	add sp, 0x8\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");
-}
-#endif // NONMATCHING
 
 void CallWindowFunction(u8 windowId, WindowFunc func)
 {