From 765ad80884338edfa752dcee450f62742b94d547 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Mon, 4 Dec 2017 20:06:03 -0500
Subject: [PATCH] through sub_800E700

---
 asm/link_rfu.s     | 51 ----------------------------------------------
 include/librfu.h   |  2 ++
 include/link.h     |  1 +
 include/link_rfu.h |  4 +++-
 src/link_rfu.c     | 26 +++++++++++++++++++++++
 5 files changed, 32 insertions(+), 52 deletions(-)

diff --git a/asm/link_rfu.s b/asm/link_rfu.s
index 5be4b05f2..0a93e630f 100644
--- a/asm/link_rfu.s
+++ b/asm/link_rfu.s
@@ -5,57 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800E6D0
-sub_800E6D0: @ 800E6D0
-	push {r4-r6,lr}
-	ldr r4, =gIntrTable
-	ldr r5, [r4, 0x4]
-	ldr r6, [r4, 0x8]
-	bl sub_800E700
-	bl rfu_REQ_stopMode
-	bl rfu_waitREQComplete
-	ldr r1, =0x04000208
-	movs r0, 0
-	strh r0, [r1]
-	str r5, [r4, 0x4]
-	str r6, [r4, 0x8]
-	movs r0, 0x1
-	strh r0, [r1]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_800E6D0
-
-	thumb_func_start sub_800E700
-sub_800E700: @ 800E700
-	push {r4,lr}
-	ldr r0, =gUnknown_03004140+0x50
-	ldr r1, =0x00000e64
-	ldr r4, =gIntrTable + 0x4
-	adds r2, r4, 0
-	movs r3, 0x1
-	bl rfu_initializeAPI
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, 0
-	bne _0800E732
-	ldr r0, =gLinkType
-	strh r1, [r0]
-	bl sub_800AAF4
-	movs r0, 0
-	bl sub_80111B0
-	bl sub_800E604
-	adds r1, r4, 0x4
-	movs r0, 0x3
-	bl rfu_setTimerInterrupt
-_0800E732:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_800E700
-
 	thumb_func_start sub_800E748
 sub_800E748: @ 800E748
 	push {r4,r5,lr}
diff --git a/include/librfu.h b/include/librfu.h
index 1f22133b9..e1e6d5f80 100644
--- a/include/librfu.h
+++ b/include/librfu.h
@@ -211,3 +211,5 @@ bool16 rfu_UNI_PARENT_getDRAC_ACK(u8 *a0);
 void rfu_REQ_disconnect(u8 who);
 void rfu_changeSendTarget(u8 a0, u8 who, u8 a2);
 void rfu_NI_stopReceivingData(u8 who);
+u16 rfu_initializeAPI(u32 *unk0, u16 unk1, IntrFunc *interrupt, bool8 copyInterruptToRam);
+void rfu_setTimerInterrupt(u8 which, IntrFunc *intr);
diff --git a/include/link.h b/include/link.h
index 32fadc5ea..c01f24d27 100644
--- a/include/link.h
+++ b/include/link.h
@@ -247,6 +247,7 @@ void sub_800A418(void);
 void SetSuppressLinkErrorMessage(bool8 flag);
 void sub_800B524(struct LinkPlayer *linkPlayer);
 u8 GetSioMultiSI(void);
+void sub_800AAF4(void);
 
 extern u16 gLinkPartnersHeldKeys[6];
 extern u32 gLinkDebugSeed;
diff --git a/include/link_rfu.h b/include/link_rfu.h
index f43f3dd12..6a55bb536 100644
--- a/include/link_rfu.h
+++ b/include/link_rfu.h
@@ -78,7 +78,9 @@ struct UnkRfuStruct_1 {
     /* 0x03c */ struct UnkLinkRfuStruct_02022B2C *unk_3c;
     /* 0x040 */ void (*unk_40)(u8, u8);
     /* 0x044 */ void (*unk_44)(u16);
-    /* 0x048 */ u8 filler_48[0xe78];
+    /* 0x048 */ u8 filler_48[8];
+    /* 0x050 */ u32 unk_50[0x399];
+    /* 0xeb4 */ u8 filler_e64[12];
 };
 
 struct UnkRfuStruct_2_Sub_6c {
diff --git a/src/link_rfu.c b/src/link_rfu.c
index 3eb74a100..32080bf29 100644
--- a/src/link_rfu.c
+++ b/src/link_rfu.c
@@ -48,6 +48,7 @@ void sub_800D630(void);
 bool8 sub_800DAC8(struct UnkRfuStruct_2_Sub_c1c *q1, u8 *q2);
 void sub_800FCC4(struct UnkRfuStruct_2_Sub_6c *data);
 bool32 sub_8010454(u16 a0);
+void sub_80111B0(bool32 a0);
 u8 sub_8011A74(void);
 u8 sub_8012224(void);
 
@@ -2355,3 +2356,28 @@ void sub_800E604(void)
     CpuFill16(0, gRecvCmds, sizeof gRecvCmds);
     CpuFill16(0, gLinkPlayers, sizeof gLinkPlayers)
 }
+
+void sub_800E6D0(void)
+{
+    IntrFunc serialIntr = gIntrTable[1];
+    IntrFunc timerIntr = gIntrTable[2];
+    sub_800E700();
+    rfu_REQ_stopMode();
+    rfu_waitREQComplete();
+    REG_IME = 0;
+    gIntrTable[1] = serialIntr;
+    gIntrTable[2] = timerIntr;
+    REG_IME = INTR_FLAG_VBLANK;
+}
+
+void sub_800E700(void)
+{
+    if (!rfu_initializeAPI(gUnknown_03004140.unk_50, sizeof gUnknown_03004140.unk_50, gIntrTable + 1, TRUE))
+    {
+        gLinkType = 0;
+        sub_800AAF4();
+        sub_80111B0(0);
+        sub_800E604();
+        rfu_setTimerInterrupt(3, gIntrTable + 2);
+    }
+}