From e3bdb08efa3ea0f2d55e77c5ab57528f6d604b6a Mon Sep 17 00:00:00 2001
From: Marcus Huderle <huderlem@gmail.com>
Date: Sun, 14 Apr 2019 10:13:51 -0500
Subject: [PATCH] Start decompiling pokenav_unk_3.c

---
 asm/pokenav_unk_3.s | 50 ---------------------------------------------
 include/pokenav.h   |  4 ++++
 ld_script.txt       |  1 +
 src/pokenav.c       |  5 +----
 src/pokenav_unk_3.c | 40 ++++++++++++++++++++++++++++++++++++
 5 files changed, 46 insertions(+), 54 deletions(-)
 create mode 100755 src/pokenav_unk_3.c

diff --git a/asm/pokenav_unk_3.s b/asm/pokenav_unk_3.s
index d1632f7e7..202c573bf 100644
--- a/asm/pokenav_unk_3.s
+++ b/asm/pokenav_unk_3.s
@@ -5,56 +5,6 @@
 
 @ File centered around AllocSubstruct(5)
 
-	thumb_func_start sub_81CAAE8
-sub_81CAAE8: @ 81CAAE8
-	push {r4,lr}
-	movs r1, 0xD4
-	lsls r1, 1
-	movs r0, 0x5
-	bl AllocSubstruct
-	adds r4, r0, 0
-	cmp r4, 0
-	beq _081CAB1C
-	ldr r0, =sub_81CAB44
-	str r0, [r4, 0x18]
-	movs r0, 0
-	strh r0, [r4, 0x8]
-	str r0, [r4, 0x10]
-	ldr r0, =sub_81CAD20
-	movs r1, 0x1
-	bl CreateLoopedTask
-	str r0, [r4, 0x14]
-	movs r0, 0x1
-	b _081CAB1E
-	.pool
-_081CAB1C:
-	movs r0, 0
-_081CAB1E:
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81CAAE8
-
-	thumb_func_start sub_81CAB24
-sub_81CAB24: @ 81CAB24
-	push {lr}
-	movs r0, 0x5
-	bl GetSubstructPtr
-	ldr r1, [r0, 0x18]
-	bl _call_via_r1
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81CAB24
-
-	thumb_func_start sub_81CAB38
-sub_81CAB38: @ 81CAB38
-	push {lr}
-	movs r0, 0x5
-	bl FreePokenavSubstruct
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CAB38
-
 	thumb_func_start sub_81CAB44
 sub_81CAB44: @ 81CAB44
 	push {r4,r5,lr}
diff --git a/include/pokenav.h b/include/pokenav.h
index e9ec99037..7ae640637 100644
--- a/include/pokenav.h
+++ b/include/pokenav.h
@@ -76,5 +76,9 @@ int sub_81C9894(void);
 u32 sub_81C99D4(void);
 void sub_81CAADC(void);
 
+// pokenav_unk_3.c
+bool32 sub_81CAAE8(void);
+u32 sub_81CAB24(void);
+void sub_81CAB38(void);
 
 #endif //GUARD_POKENAV_H
diff --git a/ld_script.txt b/ld_script.txt
index 0d2e3dbaa..b3602c47e 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -305,6 +305,7 @@ SECTIONS {
         src/pokenav_match_call_ui.o(.text);
         src/pokenav_unk_1.o(.text);
         asm/pokenav_unk_2.o(.text);
+        src/pokenav_unk_3.o(.text);
         asm/pokenav_unk_3.o(.text);
         asm/pokenav_unk_4.o(.text);
         asm/pokenav_unk_5.o(.text);
diff --git a/src/pokenav.c b/src/pokenav.c
index dcafa4f20..734d37c46 100644
--- a/src/pokenav.c
+++ b/src/pokenav.c
@@ -28,7 +28,7 @@ struct PokenavResources
 
 struct UnknownPokenavCallbackStruct
 {
-    u32 (*unk0)(void);
+    bool32 (*unk0)(void);
     u32 (*unk4)(void);
     u32 (*unk8)(void);
     u32 (*unkC)(void);
@@ -65,12 +65,9 @@ extern u32 sub_81CF3F8(void);
 extern u32 sub_81CD024(void);
 extern u32 sub_81CEF98(void);
 extern u32 sub_81CF368(void);
-extern u32 sub_81CAAE8(void);
-extern u32 sub_81CAB24(void);
 extern u32 sub_81CB260(void);
 extern u32 sub_81CB29C(void);
 extern u32 sub_81CB2CC(void);
-extern void sub_81CAB38(void);
 extern u32 sub_81CB2E0(void);
 extern u32 sub_81CF9BC(void);
 extern u32 sub_81CFA34(void);
diff --git a/src/pokenav_unk_3.c b/src/pokenav_unk_3.c
new file mode 100755
index 000000000..be1926e0d
--- /dev/null
+++ b/src/pokenav_unk_3.c
@@ -0,0 +1,40 @@
+#include "global.h"
+#include "pokenav.h"
+
+struct Pokenav3Struct
+{
+    u8 filler0[0x8];
+    u16 unk8;
+    u8 fillerA[0x6];
+    u32 unk10;
+    u32 unk14;
+    u32 (*unk18)(struct Pokenav3Struct*);
+    u8 filler1C[0x18C];
+};
+
+u32 sub_81CAB44(struct Pokenav3Struct *);
+u32 sub_81CAD20(int);
+
+bool32 sub_81CAAE8(void)
+{
+    struct Pokenav3Struct *state = AllocSubstruct(5, sizeof(struct Pokenav3Struct));
+    if (!state)
+        return FALSE;
+
+    state->unk18 = sub_81CAB44;
+    state->unk8 = 0;
+    state->unk10 = 0;
+    state->unk14 = CreateLoopedTask(sub_81CAD20, 1);
+    return TRUE;
+}
+
+u32 sub_81CAB24(void)
+{
+    struct Pokenav3Struct *state = GetSubstructPtr(5);
+    return state->unk18(state);
+}
+
+void sub_81CAB38(void)
+{
+    FreePokenavSubstruct(5);
+}