sub_800F1E0

3 files changed, 99 insertions, 323 deletions

diff --git a/asm/link_rfu.s b/asm/link_rfu.s
index ff7b2caa1..72691fd6c 100644
--- a/asm/link_rfu.s
+++ b/asm/link_rfu.s
@@ -5,325 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800F1E0
-sub_800F1E0: @ 800F1E0
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x8
-	ldr r0, =gUnknown_03005000
-	ldrh r1, [r0, 0x4]
-	adds r6, r0, 0
-	cmp r1, 0x13
-	bhi _0800F1F8
-	b _0800F45A
-_0800F1F8:
-	ldrb r0, [r6, 0xE]
-	cmp r0, 0x1
-	beq _0800F200
-	b _0800F45A
-_0800F200:
-	bl rfu_waitREQComplete
-	ldr r0, =0x00000cdb
-	adds r2, r6, r0
-	ldrb r0, [r2]
-	cmp r0, 0
-	bne _0800F220
-	adds r1, r6, 0
-	adds r1, 0xEE
-_0800F212:
-	ldrb r0, [r1]
-	cmp r0, 0
-	beq _0800F21A
-	b _0800F480
-_0800F21A:
-	ldrb r0, [r2]
-	cmp r0, 0
-	beq _0800F212
-_0800F220:
-	bl rfu_REQ_recvData
-	bl rfu_waitREQComplete
-	ldr r2, =gUnknown_03004140
-	ldr r4, =gUnknown_03005000
-	ldr r1, =0x00000ce2
-	adds r0, r4, r1
-	ldrb r1, [r2, 0x3]
-	ldrb r0, [r0]
-	ands r1, r0
-	cmp r1, r0
-	beq _0800F23C
-	b _0800F444
-_0800F23C:
-	ldr r6, =0x00000cdc
-	adds r1, r4, r6
-	ldrb r0, [r1]
-	movs r0, 0
-	strb r0, [r1]
-	ldr r1, =gUnknown_02022B44
-	ldrh r0, [r1, 0x6]
-	adds r0, 0x1
-	strh r0, [r1, 0x6]
-	ldrb r7, [r2]
-	movs r5, 0
-_0800F252:
-	movs r0, 0x1
-	ands r0, r7
-	lsrs r1, r7, 1
-	str r1, [sp, 0x4]
-	adds r2, r5, 0x1
-	str r2, [sp]
-	cmp r0, 0
-	bne _0800F264
-	b _0800F364
-_0800F264:
-	ldr r1, =gUnknown_03005000
-	lsls r2, r5, 3
-	subs r0, r2, r5
-	lsls r4, r0, 1
-	adds r0, r1, 0
-	adds r0, 0x15
-	adds r0, r4, r0
-	ldrb r0, [r0]
-	adds r6, r1, 0
-	adds r3, r2, 0
-	lsls r1, r5, 24
-	mov r10, r1
-	cmp r0, 0
-	beq _0800F35C
-	ldr r2, =0x00000cee
-	adds r0, r6, r2
-	adds r1, r5, r0
-	ldrb r0, [r1]
-	cmp r0, 0xFF
-	beq _0800F2E0
-	adds r0, r6, 0
-	adds r0, 0x14
-	adds r0, r4, r0
-	ldrb r2, [r0]
-	lsrs r2, 5
-	ldrb r0, [r1]
-	adds r0, 0x1
-	movs r1, 0x7
-	ands r0, r1
-	cmp r2, r0
-	beq _0800F2E0
-	ldr r0, =0x00000cea
-	adds r1, r6, r0
-	adds r1, r5, r1
-	ldrb r0, [r1]
-	adds r0, 0x1
-	strb r0, [r1]
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x4
-	bls _0800F35C
-	movs r0, 0x81
-	lsls r0, 8
-	bl sub_8011170
-	b _0800F35C
-	.pool
-_0800F2E0:
-	ldr r2, =gUnknown_03005000
-	ldr r6, =0x00000cee
-	adds r1, r2, r6
-	adds r1, r5, r1
-	subs r3, r5
-	lsls r3, 1
-	adds r4, r2, 0
-	adds r4, 0x14
-	adds r2, r3, r4
-	ldrb r0, [r2]
-	lsrs r0, 5
-	strb r0, [r1]
-	ldr r1, =gUnknown_03005000
-	subs r6, 0x4
-	adds r0, r1, r6
-	adds r0, r5, r0
-	movs r1, 0
-	strb r1, [r0]
-	ldrb r1, [r2]
-	movs r0, 0x1F
-	ands r0, r1
-	strb r0, [r2]
-	ldr r2, =gUnknown_03005000+0xCDE
-	adds r0, r5, r2
-	ldrb r0, [r0]
-	movs r6, 0
-	lsls r1, r5, 24
-	mov r10, r1
-	lsrs r2, r7, 1
-	str r2, [sp, 0x4]
-	adds r5, 0x1
-	str r5, [sp]
-	ldr r1, =gRecvCmds
-	mov r9, r1
-	adds r5, r3, 0
-	adds r7, r4, 0
-	lsls r0, 4
-	mov r8, r0
-	adds r2, r5, 0x1
-	mov r12, r2
-_0800F330:
-	lsls r1, r6, 1
-	mov r0, r8
-	adds r4, r1, r0
-	add r4, r9
-	mov r2, r12
-	adds r3, r1, r2
-	adds r3, r7
-	ldrb r2, [r3]
-	lsls r2, 8
-	adds r1, r5
-	adds r1, r7
-	ldrb r0, [r1]
-	orrs r0, r2
-	strh r0, [r4]
-	movs r0, 0
-	strb r0, [r3]
-	strb r0, [r1]
-	adds r0, r6, 0x1
-	lsls r0, 16
-	lsrs r6, r0, 16
-	cmp r6, 0x6
-	bls _0800F330
-_0800F35C:
-	mov r1, r10
-	lsrs r0, r1, 24
-	bl rfu_UNI_clearRecvNewDataFlag
-_0800F364:
-	ldr r2, [sp, 0x4]
-	lsls r0, r2, 16
-	lsrs r7, r0, 16
-	ldr r6, [sp]
-	lsls r0, r6, 16
-	lsrs r5, r0, 16
-	cmp r5, 0x3
-	bhi _0800F376
-	b _0800F252
-_0800F376:
-	bl sub_800F014
-	movs r0, 0
-	bl sub_800F86C
-	bl sub_8010528
-	ldr r4, =gUnknown_03005000
-	ldr r1, =0x00000ce5
-	adds r0, r4, r1
-	ldrb r0, [r0]
-	cmp r0, 0
-	beq _0800F452
-	ldr r2, =0x00000cd9
-	adds r0, r4, r2
-	ldrb r2, [r0]
-	cmp r2, 0
-	bne _0800F452
-	ldr r0, =gUnknown_02022B44
-	ldrb r1, [r0, 0xE]
-	strb r2, [r0, 0xE]
-	ldr r6, =0x00000cda
-	adds r0, r4, r6
-	ldrb r1, [r0]
-	movs r0, 0x3
-	bl rfu_clearSlot
-	movs r5, 0
-	adds r7, r4, 0
-	adds r7, 0x14
-_0800F3B2:
-	ldr r0, =0x00000ce5
-	adds r6, r4, r0
-	ldrb r0, [r6]
-	asrs r0, r5
-	movs r1, 0x1
-	ands r0, r1
-	cmp r0, 0
-	beq _0800F3D6
-	lsls r1, r5, 24
-	lsrs r1, 24
-	lsls r2, r5, 3
-	subs r2, r5
-	lsls r2, 1
-	adds r2, r7
-	movs r0, 0x10
-	movs r3, 0xE
-	bl rfu_setRecvBuffer
-_0800F3D6:
-	adds r0, r5, 0x1
-	lsls r0, 16
-	lsrs r5, r0, 16
-	cmp r5, 0x3
-	bls _0800F3B2
-	subs r4, r6, 0x3
-	ldrb r0, [r4]
-	ldrb r2, [r6]
-	adds r1, r0, 0
-	orrs r1, r2
-	bl sub_800E88C
-	ldrb r1, [r6]
-	movs r2, 0
-	strb r1, [r6, 0x4]
-	ldrb r0, [r4]
-	orrs r0, r1
-	strb r0, [r4]
-	strb r2, [r6]
-	ldrb r0, [r4]
-	adds r1, r6, 0
-	subs r1, 0x5E
-	movs r2, 0x46
-	bl rfu_UNI_setSendData
-	ldrb r0, [r4]
-	bl sub_800E87C
-	adds r1, r6, 0
-	subs r1, 0xB
-	strb r0, [r1]
-	ldr r0, =sub_8010AAC
-	movs r1, 0
-	bl CreateTask
-	b _0800F452
-	.pool
-_0800F444:
-	ldr r2, =0x00000cdc
-	adds r1, r4, r2
-	ldrb r0, [r1]
-	movs r2, 0
-	movs r0, 0x1
-	strb r0, [r1]
-	strb r2, [r4, 0xE]
-_0800F452:
-	ldr r1, =gUnknown_03005000
-	movs r0, 0
-	strb r0, [r1, 0xE]
-	adds r6, r1, 0
-_0800F45A:
-	ldr r1, =0x00000cdc
-	adds r0, r6, r1
-	ldrb r0, [r0]
-	adds r1, r0, 0
-	ldr r0, =gUnknown_03007890
-	ldr r0, [r0]
-	ldrb r0, [r0, 0x6]
-	cmp r0, 0
-	beq _0800F484
-	movs r0, 0x1
-	ands r0, r1
-	b _0800F486
-	.pool
-_0800F480:
-	movs r0, 0
-	b _0800F486
-_0800F484:
-	movs r0, 0
-_0800F486:
-	add sp, 0x8
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_800F1E0
-
 	thumb_func_start sub_800F498
 sub_800F498: @ 800F498
 	push {r4,r5,lr}
diff --git a/include/link_rfu.h b/include/link_rfu.h
index 278bb084c..d6f0b5b79 100644
--- a/include/link_rfu.h
+++ b/include/link_rfu.h
@@ -44,7 +44,8 @@ struct UnkLinkRfuStruct_02022B44
 {
     u8 fill_00[6];
     u16 unk_06;
-    u8 fill_08[7];
+    u8 fill_08[6];
+    vu8 unk_0e;
     u8 unk_0f;
     u8 fill_10[0xcc];
 };
@@ -164,7 +165,8 @@ struct UnkRfuStruct_2 {
     /* 0xccd */ u8 unk_ccd;
     /* 0xcce */ u8 filler_cce[2];
     /* 0xcd0 */ vu8 unk_cd0;
-    /* 0xcd1 */ u8 filler_cd1[9];
+    /* 0xcd1 */ u8 filler_cd1[8];
+    /* 0xcd9 */ u8 unk_cd9;
     /* 0xcda */ u8 unk_cda;
     /* 0xcdb */ vu8 unk_cdb;
     /* 0xcdc */ vu8 unk_cdc;
@@ -173,10 +175,13 @@ struct UnkRfuStruct_2 {
     /* 0xce2 */ u8 unk_ce2;
     /* 0xce2 */ u8 unk_ce3;
     /* 0xce4 */ u8 unk_ce4;
-    /* 0xce5 */ u8 filler_ce5[2];
+    /* 0xce5 */ u8 unk_ce5;
+    /* 0xce5 */ u8 unk_ce6;
     /* 0xce7 */ u8 unk_ce7;
     /* 0xce8 */ u8 unk_ce8;
-    /* 0xce9 */ u8 filler_ce9[11];
+    /* 0xce9 */ u8 unk_ce9;
+    /* 0xcea */ u8 unk_cea[4];
+    /* 0xcee */ u8 unk_cee[4];
 }; // size = 0xcf4
 
 // Exported RAM declarations
diff --git a/src/link_rfu.c b/src/link_rfu.c
index 06fdbe207..d5a789bed 100644
--- a/src/link_rfu.c
+++ b/src/link_rfu.c
@@ -54,8 +54,10 @@ void sub_800ED34(u16 unused);
 static void sub_800EDBC(u16 unused);
 static void sub_800F048(void);
 struct UnkLinkRfuStruct_02022B14 *sub_800F7DC(void);
+void sub_800F86C(u8 a0);
 void sub_800FCC4(struct UnkRfuStruct_2_Sub_6c *data);
 bool32 sub_8010454(u16 a0);
+void sub_8010528(void);
 void sub_8010750(void);
 int sub_80107A0(void);
 void sub_801084C(u8 taskId);
@@ -3033,3 +3035,91 @@ bool32 sub_800F0F8(void)
     }
     return FALSE;
 }
+
+bool32 sub_800F1E0(void)
+{
+    u16 i;
+    u16 flags;
+    u8 r0;
+    u16 j;
+    u8 retval;
+
+    if (gUnknown_03005000.unk_04 >= 20 && gUnknown_03005000.unk_0e == 1)
+    {
+        rfu_waitREQComplete();
+        while (gUnknown_03005000.unk_cdb == 0)
+        {
+            if (gUnknown_03005000.unk_ee != 0)
+            {
+                return FALSE;
+            }
+        }
+        rfu_REQ_recvData();
+        rfu_waitREQComplete();
+        if ((gUnknown_03004140.unk_03 & gUnknown_03005000.unk_ce2) == gUnknown_03005000.unk_ce2)
+        {
+            gUnknown_03005000.unk_cdc = 0;
+            gUnknown_02022B44.unk_06++;
+            flags = gUnknown_03004140.unk_00;
+            for (i = 0; i < 4; i++)
+            {
+                if (flags & 1)
+                {
+                    if (gUnknown_03005000.unk_14[i][1])
+                    {
+                        if (gUnknown_03005000.unk_cee[i] != 0xff && (gUnknown_03005000.unk_14[i][0] >> 5) != ((gUnknown_03005000.unk_cee[i] + 1) & 7))
+                        {
+                            if (++gUnknown_03005000.unk_cea[i] > 4)
+                                sub_8011170(0x8100);
+                        }
+                        else
+                        {
+                            gUnknown_03005000.unk_cee[i] = gUnknown_03005000.unk_14[i][0] / 32;
+                            gUnknown_03005000.unk_cea[i] = 0;
+                            gUnknown_03005000.unk_14[i][0] &= 0x1f;
+                            r0 = gUnknown_03005000.unk_cde[i];
+                            for (j = 0; j < 7; j++)
+                            {
+                                gRecvCmds[r0][j] = (gUnknown_03005000.unk_14[i][(j << 1) + 1] << 8) | gUnknown_03005000.unk_14[i][(j << 1) + 0];
+                                gUnknown_03005000.unk_14[i][(j << 1) + 1] = 0;
+                                gUnknown_03005000.unk_14[i][(j << 1) + 0] = 0;
+                            }
+                        }
+                    }
+                    rfu_UNI_clearRecvNewDataFlag(i);
+                }
+                flags >>= 1;
+            }
+            sub_800F014();
+            sub_800F86C(0);
+            sub_8010528();
+            if (gUnknown_03005000.unk_ce5 && !gUnknown_03005000.unk_cd9)
+            {
+                gUnknown_02022B44.unk_0e = 0;
+                rfu_clearSlot(3, gUnknown_03005000.unk_cda);
+                for (i = 0; i < 4; i++)
+                {
+                    if ((gUnknown_03005000.unk_ce5 >> i) & 1)
+                    {
+                        rfu_setRecvBuffer(0x10, i, gUnknown_03005000.unk_14[i], 14);
+                    }
+                }
+                sub_800E88C(gUnknown_03005000.unk_ce2, gUnknown_03005000.unk_ce2 | gUnknown_03005000.unk_ce5);
+                gUnknown_03005000.unk_ce9 = gUnknown_03005000.unk_ce5;
+                gUnknown_03005000.unk_ce2 |= gUnknown_03005000.unk_ce5;
+                gUnknown_03005000.unk_ce5 = 0;
+                rfu_UNI_setSendData(gUnknown_03005000.unk_ce2, gUnknown_03005000.unk_c87, 70);
+                gUnknown_03005000.unk_cda = sub_800E87C(gUnknown_03005000.unk_ce2);
+                CreateTask(sub_8010AAC, 0);
+            }
+        }
+        else
+        {
+            gUnknown_03005000.unk_cdc = 1;
+            gUnknown_03005000.unk_0e = 0;
+        }
+        gUnknown_03005000.unk_0e = 0;
+    }
+    retval = gUnknown_03005000.unk_cdc;
+    return gUnknown_03007890->unk_06 ? retval & 1 : FALSE;
+}