Document main screen handlers

asm/code_08050038.s

@@ -405,8 +405,8 @@ _08050444: .4byte 0x000004B4
 _08050448: .4byte gUnk_02019EEC
 _0805044C: .4byte gUnk_02002A40
 
-	thumb_func_start sub_08050450
-sub_08050450: @ 0x08050450
+	thumb_func_start HandleChooseFileScreen
+HandleChooseFileScreen: @ 0x08050450
 	push {r4, lr}
 	bl sub_080AD90C
 	ldr r1, _080504D8 @ =gUnk_080FC8A4
@@ -3104,8 +3104,8 @@ sub_0805194C: @ 0x0805194C
 _08051980: .4byte gUnk_02019EE0
 _08051984: .4byte 0x000004B4
 
-	thumb_func_start sub_08051988
-sub_08051988: @ 0x08051988
+	thumb_func_start HandleGameplayScreen
+HandleGameplayScreen: @ 0x08051988
 	push {lr}
 	ldr r1, _080519A4 @ =gScreenTransition
 	ldr r0, [r1]
@@ -3875,8 +3875,8 @@ _08052088: .4byte gScreen
 _0805208C: .4byte 0x00001C01
 _08052090: .4byte 0x00001D05
 
-	thumb_func_start sub_08052094
-sub_08052094: @ 0x08052094
+	thumb_func_start HandleGameOverScreen
+HandleGameOverScreen: @ 0x08052094
 	push {r4, lr}
 	ldr r1, _080520BC @ =gUnk_080FCA70
 	ldr r4, _080520C0 @ =gUnk_03001000

asm/code_0805EC04.s

@@ -1857,8 +1857,8 @@ _0805F9E2:
 	.align 2, 0
 _0805F9E4: .4byte 0x0000031A
 
-	thumb_func_start sub_0805F9E8
-sub_0805F9E8: @ 0x0805F9E8
+	thumb_func_start HandleDebugTextScreen
+HandleDebugTextScreen: @ 0x0805F9E8
 	push {lr}
 	ldr r1, _0805F9FC @ =gUnk_08109A30
 	ldr r0, _0805FA00 @ =gUnk_03001000

asm/code_080A3480.s

@@ -201,8 +201,8 @@ sub_080A35C8: @ 0x080A35C8
 	.align 2, 0
 _080A35DC: .4byte gUnk_02021EE0
 
-	thumb_func_start sub_080A35E0
-sub_080A35E0: @ 0x080A35E0
+	thumb_func_start HandleCreditsScreen
+HandleCreditsScreen: @ 0x080A35E0
 	push {lr}
 	ldr r1, _080A35FC @ =gScreenTransition
 	ldr r0, [r1]

include/functions.h

@@ -242,4 +242,10 @@ extern void sub_0807921C();
 extern void sub_0807A1B8();
 extern void sub_08079938();
 extern void sub_0807ACCC(Entity*);
+extern void HandleIntroScreen(void);
+extern void HandleChooseFileScreen(void);
+extern void HandleGameplayScreen(void);
+extern void HandleGameOverScreen(void);
+extern void HandleCreditsScreen(void);
+extern void HandleDebugTextScreen(void);
 #endif

include/main.h

@@ -20,6 +20,7 @@ enum {
     SCREEN_GAMEPLAY,
     SCREEN_GAME_OVER,
     SCREEN_CREDITS,
+    SCREEN_DEBUG_TEXT,
 };
 
 typedef struct {

linker.ld

@@ -916,6 +916,8 @@ SECTIONS {
 		data/data_080D3D94.o(.rodata);
 		data/areaPropertyLists.o(.rodata);
 		data/data_080D5360.o(.rodata);
+		src/mainLoop.o(.rodata);
+		data/data_08100CD4.o(.rodata);
 		src/item.o(.rodata);
 		data/data_0811BD44.o(.rodata);
 		src/object/greatFairy.o(.rodata);

src/introSetTransition.c

@@ -26,7 +26,7 @@ u32 IntroSetTransition(u32 transition)
     DoFade(7, 8);
 }
 
-void sub_080AD380()
+void HandleIntroScreen(void)
 {
   sub_080AD90C();
   switch (gUnk_03001000.funcIndex) {

src/mainLoop.c

@@ -6,7 +6,6 @@
 
 extern void sub_0804FF84(u32);
 extern u32 gUnk_020176A0;
-extern const void (*gUnk_08100CBC[])();
 extern void VBlankInterruptWait(void);
 extern void DisableInterruptsAndDMA(void);
 extern void sub_0801D66C(void*, u8*, int);
@@ -15,6 +14,15 @@ extern void sub_08016B34(void);
 static void sub_08055F70(void);
 static bool32 SoftResetKeysPressed(void);
 
+static void (*const sScreenHandlers[])(void) = {
+    [SCREEN_INTRO]       = HandleIntroScreen,
+    [SCREEN_CHOOSE_FILE] = HandleChooseFileScreen,
+    [SCREEN_GAMEPLAY]    = HandleGameplayScreen,
+    [SCREEN_GAME_OVER]   = HandleGameOverScreen,
+    [SCREEN_CREDITS]     = HandleCreditsScreen,
+    [SCREEN_DEBUG_TEXT]  = HandleDebugTextScreen,
+};
+
 void MainLoop(void) {
     int var0;
 
@@ -60,7 +68,7 @@ void MainLoop(void) {
                 }
 
                 gUnk_03001000.ticks++;
-                gUnk_08100CBC[gUnk_03001000.screen]();
+                sScreenHandlers[gUnk_03001000.screen]();
                 sub_08056458();
                 sub_08050154();
                 sub_080A3480();