sub_8009AA0

4 files changed, 148 insertions, 369 deletions

diff --git a/asm/link.s b/asm/link.s
index 20eba107b..c731430e5 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -5,349 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8009AA0
-sub_8009AA0: @ 8009AA0
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x4
-	movs r6, 0
-_08009AAE:
-	ldr r0, =gUnknown_03003020
-	lsls r1, r6, 1
-	adds r3, r1, r0
-	movs r0, 0
-	strh r0, [r3]
-	lsls r4, r6, 4
-	ldr r5, =gUnknown_03003090
-	adds r2, r4, r5
-	ldrh r0, [r2]
-	mov r12, r1
-	adds r7, r6, 0x1
-	str r7, [sp]
-	cmp r0, 0
-	bne _08009ACC
-	b _08009D6E
-_08009ACC:
-	ldrh r1, [r2]
-	ldr r0, =0x00005fff
-	cmp r1, r0
-	bne _08009AD6
-	b _08009D20
-_08009AD6:
-	cmp r1, r0
-	bgt _08009B24
-	ldr r0, =0x00004444
-	cmp r1, r0
-	bne _08009AE2
-	b _08009D64
-_08009AE2:
-	cmp r1, r0
-	bgt _08009B10
-	ldr r0, =0x00002222
-	cmp r1, r0
-	beq _08009B68
-	ldr r0, =0x00002ffe
-	cmp r1, r0
-	bne _08009AF4
-	b _08009D28
-_08009AF4:
-	b _08009D6E
-	.pool
-_08009B10:
-	ldr r0, =0x00005555
-	cmp r1, r0
-	beq _08009BB8
-	adds r0, 0x11
-	cmp r1, r0
-	beq _08009BB8
-	b _08009D6E
-	.pool
-_08009B24:
-	ldr r0, =0x0000bbbb
-	cmp r1, r0
-	beq _08009BC4
-	cmp r1, r0
-	bgt _08009B4C
-	ldr r0, =0x00008888
-	cmp r1, r0
-	beq _08009BF0
-	ldr r0, =0x0000aaaa
-	cmp r1, r0
-	bne _08009B3C
-	b _08009D38
-_08009B3C:
-	b _08009D6E
-	.pool
-_08009B4C:
-	ldr r0, =0x0000cafe
-	cmp r1, r0
-	bne _08009B54
-	b _08009D64
-_08009B54:
-	ldr r0, =0x0000cccc
-	cmp r1, r0
-	bne _08009B5C
-	b _08009D3E
-_08009B5C:
-	b _08009D6E
-	.pool
-_08009B68:
-	bl sub_8009638
-	ldr r0, =gUnknown_03003030
-	adds r2, r0, 0
-	adds r2, 0x10
-	ldr r1, =gUnknown_020229CC
-	ldm r1!, {r3-r5}
-	stm r2!, {r3-r5}
-	ldm r1!, {r3,r6,r7}
-	stm r2!, {r3,r6,r7}
-	ldr r1, [r1]
-	str r1, [r2]
-	ldr r4, =gASCIIGameFreakInc
-	adds r2, r0, 0
-	adds r1, r4, 0
-	ldm r1!, {r5-r7}
-	stm r2!, {r5-r7}
-	ldrh r3, [r1]
-	strh r3, [r2]
-	ldrb r1, [r1, 0x2]
-	strb r1, [r2, 0x2]
-	adds r1, r0, 0
-	adds r1, 0x2C
-	ldm r4!, {r2,r3,r5}
-	stm r1!, {r2,r3,r5}
-	ldrh r2, [r4]
-	strh r2, [r1]
-	ldrb r2, [r4, 0x2]
-	strb r2, [r1, 0x2]
-	movs r1, 0x3C
-	bl sub_800A2F4
-	b _08009D6E
-	.pool
-_08009BB8:
-	ldr r1, =gUnknown_030030E8
-	movs r0, 0x1
-	strb r0, [r1]
-	b _08009D6E
-	.pool
-_08009BC4:
-	mov r7, r12
-	adds r1, r7, r6
-	lsls r1, 2
-	ldr r0, =gUnknown_03000D20
-	adds r1, r0
-	movs r2, 0
-	strh r2, [r1]
-	ldr r0, =gUnknown_03003090
-	adds r0, 0x2
-	adds r0, r4, r0
-	ldrh r0, [r0]
-	strh r0, [r1, 0x2]
-	ldr r0, =gUnknown_03003090
-	adds r0, 0x4
-	adds r0, r4, r0
-	ldrh r0, [r0]
-	strb r0, [r1, 0x9]
-	b _08009D6E
-	.pool
-_08009BF0:
-	mov r3, r12
-	adds r0, r3, r6
-	lsls r0, 2
-	ldr r5, =gUnknown_03000D20
-	adds r3, r0, r5
-	ldrh r1, [r3, 0x2]
-	movs r0, 0x80
-	lsls r0, 1
-	adds r7, r5, 0
-	mov r10, r7
-	cmp r1, r0
-	bls _08009C40
-	ldr r0, =0x0201c000
-	mov r8, r0
-	movs r2, 0
-	adds r5, r3, 0
-	ldr r7, =gUnknown_03003090
-	adds r3, r4, 0
-_08009C14:
-	ldrh r1, [r5]
-	lsrs r1, 1
-	adds r1, r2
-	lsls r1, 1
-	add r1, r8
-	adds r2, 0x1
-	lsls r0, r2, 1
-	adds r0, r3
-	adds r0, r7
-	ldrh r0, [r0]
-	strh r0, [r1]
-	lsls r2, 16
-	lsrs r2, 16
-	cmp r2, 0x6
-	bls _08009C14
-	b _08009C70
-	.pool
-_08009C40:
-	movs r2, 0
-	ldr r1, =gBlockRecvBuffer
-	mov r9, r1
-	adds r7, r3, 0
-	ldr r3, =gUnknown_03003090
-	mov r8, r3
-	lsls r5, r6, 8
-	adds r3, r4, 0
-_08009C50:
-	ldrh r1, [r7]
-	lsrs r1, 1
-	adds r1, r2
-	lsls r1, 1
-	adds r1, r5
-	add r1, r9
-	adds r2, 0x1
-	lsls r0, r2, 1
-	adds r0, r3
-	add r0, r8
-	ldrh r0, [r0]
-	strh r0, [r1]
-	lsls r2, 16
-	lsrs r2, 16
-	cmp r2, 0x6
-	bls _08009C50
-_08009C70:
-	mov r4, r12
-	adds r1, r4, r6
-	lsls r1, 2
-	add r1, r10
-	ldrh r0, [r1]
-	adds r0, 0xE
-	movs r3, 0
-	strh r0, [r1]
-	lsls r0, 16
-	lsrs r0, 16
-	ldrh r1, [r1, 0x2]
-	cmp r0, r1
-	bcc _08009D6E
-	ldr r0, =gUnknown_03003078
-	adds r0, r6, r0
-	ldrb r0, [r0]
-	cmp r0, 0x1
-	bne _08009D16
-	lsls r1, r6, 8
-	ldr r0, =gBlockRecvBuffer
-	adds r1, r0
-	mov r8, r1
-	lsls r0, r6, 3
-	subs r0, r6
-	lsls r0, 2
-	ldr r1, =gLinkPlayers
-	adds r2, r0, r1
-	adds r1, r2, 0
-	mov r0, r8
-	adds r0, 0x10
-	ldm r0!, {r4,r5,r7}
-	stm r1!, {r4,r5,r7}
-	ldm r0!, {r4,r5,r7}
-	stm r1!, {r4,r5,r7}
-	ldr r0, [r0]
-	str r0, [r1]
-	ldrb r0, [r2]
-	subs r0, 0x1
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x1
-	bhi _08009CCA
-	strb r3, [r2, 0x12]
-	strb r3, [r2, 0x11]
-	strb r3, [r2, 0x10]
-_08009CCA:
-	adds r0, r2, 0
-	bl sub_800B524
-	ldr r5, =gASCIIGameFreakInc
-	mov r0, r8
-	adds r1, r5, 0
-	bl strcmp
-	cmp r0, 0
-	bne _08009CEC
-	mov r0, r8
-	adds r0, 0x2C
-	adds r1, r5, 0
-	bl strcmp
-	cmp r0, 0
-	beq _08009D0C
-_08009CEC:
-	ldr r0, =c2_800ACD4
-	bl SetMainCallback2
-	b _08009D6E
-	.pool
-_08009D0C:
-	lsls r0, r6, 24
-	lsrs r0, 24
-	bl sub_8009A58
-	b _08009D6E
-_08009D16:
-	lsls r0, r6, 24
-	lsrs r0, 24
-	bl sub_800A588
-	b _08009D6E
-_08009D20:
-	ldr r0, =gUnknown_030030F0
-	b _08009D2A
-	.pool
-_08009D28:
-	ldr r0, =gUnknown_030030EC
-_08009D2A:
-	adds r0, r6, r0
-	movs r1, 0x1
-	strb r1, [r0]
-	b _08009D6E
-	.pool
-_08009D38:
-	bl sub_800A418
-	b _08009D6E
-_08009D3E:
-	ldr r3, =gUnknown_082ED1A8
-	ldr r0, =gUnknown_03003090
-	adds r0, 0x2
-	adds r0, r4, r0
-	ldrh r2, [r0]
-	lsls r2, 3
-	adds r0, r2, r3
-	ldr r1, [r0]
-	adds r3, 0x4
-	adds r2, r3
-	ldrh r2, [r2]
-	movs r0, 0
-	bl SendBlock
-	b _08009D6E
-	.pool
-_08009D64:
-	ldr r0, =gUnknown_03003090
-	adds r0, 0x2
-	adds r0, r4, r0
-	ldrh r0, [r0]
-	strh r0, [r3]
-_08009D6E:
-	ldr r5, [sp]
-	lsls r0, r5, 16
-	lsrs r6, r0, 16
-	cmp r6, 0x3
-	bhi _08009D7A
-	b _08009AAE
-_08009D7A:
-	add sp, 0x4
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_8009AA0
-
 	thumb_func_start sub_8009D90
 sub_8009D90: @ 8009D90
 	push {lr}
diff --git a/data/link.s b/data/link.s
index 51e9d0c70..f679e4b14 100644
--- a/data/link.s
+++ b/data/link.s
@@ -7,13 +7,6 @@
 
 	.align 2
 
-gASCIIGameFreakInc:: @ 82ED1D4
-	.ascii "GameFreak inc."
-
-	.align 2
-gASCIITestPrint:: @ 82ED1E4
-	.ascii "TEST PRINT\nP0\nP1\nP2\nP3"
-
 	.align 2
 gUnknown_082ED1FC:: @ 82ED1FC BgTemplate
 	.4byte 0x000001F8
diff --git a/include/decompress.h b/include/decompress.h
index c3a771893..92292e9ce 100644
--- a/include/decompress.h
+++ b/include/decompress.h
@@ -26,4 +26,6 @@ void LoadSpecialPokePic(const struct CompressedSpriteSheet *src, void *dest, s32
 void LoadSpecialPokePic_2(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic);
 void LoadSpecialPokePic_DontHandleDeoxys(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic);
 
+extern u8 gDecompressionBuffer[];
+
 #endif // GUARD_DECOMPRESS_H
diff --git a/src/link.c b/src/link.c
index e99f6764f..4279c6efc 100644
--- a/src/link.c
+++ b/src/link.c
@@ -5,6 +5,7 @@
 #include "save.h"
 #include "librfu.h"
 #include "rng.h"
+#include "decompress.h"
 #include "string_util.h"
 #include "event_data.h"
 #include "gpu_regs.h"
@@ -42,14 +43,14 @@ struct SIOCnt {
 
 IWRAM_DATA struct BlockTransfer gUnknown_03000D10;
 IWRAM_DATA u32 link_c_unused_03000d1c;
-IWRAM_DATA struct BlockTransfer gUnknown_03000D20[4];
+IWRAM_DATA struct BlockTransfer gUnknown_03000D20[MAX_LINK_PLAYERS];
 IWRAM_DATA u32 gUnknown_03000D50;
 IWRAM_DATA u32 gUnknown_03000D54;
 IWRAM_DATA u8 gUnknown_03000D58;
 IWRAM_DATA u32 gUnknown_03000D5C;
 IWRAM_DATA u32 gUnknown_03000D60;
 IWRAM_DATA u8 gUnknown_03000D64;
-ALIGNED() IWRAM_DATA u8 gUnknown_03000D68[4];
+ALIGNED() IWRAM_DATA u8 gUnknown_03000D68[MAX_LINK_PLAYERS];
 IWRAM_DATA u8 gUnknown_03000D6C;
 IWRAM_DATA bool8 gUnknown_03000D6D;
 IWRAM_DATA u16 gUnknown_03000D6E;
@@ -71,15 +72,15 @@ u32 gUnknown_0300302C;
 struct LinkPlayerBlock gUnknown_03003030;
 bool8 gUnknown_0300306C;
 u32 gUnknown_03003070;
-bool8 gUnknown_03003078[4];
-u8 gUnknown_0300307C[4];
+bool8 gUnknown_03003078[MAX_LINK_PLAYERS];
+u8 gUnknown_0300307C[MAX_LINK_PLAYERS];
 u16 gUnknown_03003084;
-u16 gUnknown_03003090[4][8];
+u16 gUnknown_03003090[MAX_LINK_PLAYERS][8];
 u32 gUnknown_030030E0;
 u8 gUnknown_030030E4;
 bool8 gUnknown_030030E8;
-u8 gUnknown_030030EC[4];
-u8 gUnknown_030030F0[4];
+u8 gUnknown_030030EC[MAX_LINK_PLAYERS];
+u8 gUnknown_030030F0[MAX_LINK_PLAYERS];
 u16 gUnknown_030030F4;
 u8 gUnknown_030030F8;
 bool8 gLinkVSyncDisabled;
@@ -90,7 +91,7 @@ bool8 gReceivedRemoteLinkPlayers;
 struct LinkTestBGInfo gUnknown_03003130;
 void (*gUnknown_03003140)(void);
 bool8 gUnknown_03003144;
-u16 gUnknown_03003148[4];
+u16 gUnknown_03003148[MAX_LINK_PLAYERS];
 u8 gUnknown_03003150;
 u8 gUnknown_03003160;
 
@@ -104,17 +105,21 @@ struct LinkPlayer gUnknown_020229CC = {};
 
 void sub_8009638(void);
 void sub_80096BC(void);
-void c2_08009A8C(void);
-void sub_8009AA0(u8 unused);
+static void c2_08009A8C(void);
+static void sub_8009AA0(u8 unused);
 void sub_800A2E0(void);
 void sub_800A2F4(void *heapptr, size_t src);
+void sub_800A418(void);
 void task00_link_test(u8 taskId);
+void sub_800A588(u8 who);
 u16 sub_800A648(u16 *src, u16 size);
 void sub_800A6E8(u32 pos, u8 a0, u8 a1, u8 a2);
 void sub_800A824(void);
+void c2_800ACD4(void);
 void sub_800AEB4(void);
 void sub_800B330(bool8 flag);
 void sub_800B4A4(void);
+void sub_800B524(struct LinkPlayer *linkPlayer);
 void sub_800B53C(void);
 void sub_800B594(void);
 u32 sub_800BEC0(void);
@@ -130,10 +135,7 @@ const u16 gLinkTestDigitsPal[] = INCBIN_U16("graphics/interface/link_test_digits
 const u16 gLinkTestDigitsGfx[] = INCBIN_U16("graphics/interface/link_test_digits.4bpp");
 const u8 unkstring_82ed160[] = _("{HIGHLIGHT TRANSPARENT}{COLOR WHITE}");
 const u16 g2BlankTilesGfx[] = INCBIN_U16("graphics/interface/blank_1x2.4bpp");
-const struct {
-    void *data;
-    u16 size;
-} gUnknown_082ED1A8[] = {
+const struct BlockRequest gUnknown_082ED1A8[] = {
     {gUnknown_020228C4, 200},
     {gUnknown_020228C4, 200},
     {gUnknown_020228C4, 100},
@@ -146,6 +148,9 @@ const u8 gUnknown_082ED1D0[] = {
     REG_OFFSET_BG2CNT,
     REG_OFFSET_BG3CNT
 };
+const char gASCIIGameFreakInc[] = "GameFreak inc.";
+const char gASCIITestPrint[] = "TEST PRINT\nP0\nP1\nP2\nP3";
+
 
 // .text
 
@@ -215,7 +220,7 @@ void sub_8009570(void)
     gUnknown_020229C6 = 0x1111;
     sub_8009734();
     SeedRng(gMain.vblankCounter2);
-    for (i = 0; i < 4; i ++)
+    for (i = 0; i < MAX_LINK_PLAYERS; i ++)
     {
         gSaveBlock2Ptr->playerTrainerId[i] = Random() % 256;
     }
@@ -306,7 +311,7 @@ void sub_8009734(void)
         sub_800E700();
     }
     gReceivedRemoteLinkPlayers = 0;
-    for (i = 0; i < 4; i ++)
+    for (i = 0; i < MAX_LINK_PLAYERS; i ++)
     {
         gUnknown_03003078[i] = 1;
         gUnknown_030030F0[i] = 0;
@@ -335,7 +340,7 @@ static void sub_8009818(u8 nothing, u8 is, u8 used)
         sub_800A6E8(gUnknown_03000D10.pos, 2, 3, 2);
         gUnknown_03000D64 = gUnknown_03000D10.pos;
     }
-    for (i = 0; i < 4; i ++)
+    for (i = 0; i < MAX_LINK_PLAYERS; i ++)
     {
         if (gUnknown_03000D68[i] != gUnknown_03000D20[i].pos)
         {
@@ -346,7 +351,7 @@ static void sub_8009818(u8 nothing, u8 is, u8 used)
     status = GetBlockReceivedStatus();
     if (status == 0xF) // 0b1111
     {
-        for (i = 0; i < 4; i ++)
+        for (i = 0; i < MAX_LINK_PLAYERS; i ++)
         {
             if ((status >> i) & 1)
             {
@@ -394,7 +399,7 @@ void sub_8009900(void)
     }
 }
 
-void c2_08009A8C(void)
+static void c2_08009A8C(void)
 {
     sub_8009900();
     sub_8009818(1, 1, 0);
@@ -445,3 +450,125 @@ void sub_8009A58(u8 who)
         gReceivedRemoteLinkPlayers = 1;
     }
 }
+
+static void sub_8009AA0(u8 unused)
+{
+    u16 i;
+
+    for (i = 0; i < MAX_LINK_PLAYERS; i ++)
+    {
+        gUnknown_03003020[i] = 0;
+        if (gUnknown_03003090[i][0] == 0)
+        {
+            continue;
+        }
+        switch (gUnknown_03003090[i][0])
+        {
+            case 0x2222:
+            {
+                struct LinkPlayerBlock *block;
+
+                sub_8009638();
+                block = &gUnknown_03003030;
+                block->linkPlayer = gUnknown_020229CC;
+                memcpy(block->magic1, gASCIIGameFreakInc, sizeof(block->magic1) - 1);
+                memcpy(block->magic2, gASCIIGameFreakInc, sizeof(block->magic2) - 1);
+                sub_800A2F4(block, sizeof(*block));
+                break;
+            }
+            case 0x4444:
+                gUnknown_03003020[i] = gUnknown_03003090[i][1];
+                break;
+            case 0x5555:
+                gUnknown_030030E8 = 1;
+                break;
+            case 0x5566:
+                gUnknown_030030E8 = 1;
+                break;
+            case 0xBBBB:
+            {
+                struct BlockTransfer *blockRecv;
+
+                blockRecv = &gUnknown_03000D20[i];
+                blockRecv->pos = 0;
+                blockRecv->size = gUnknown_03003090[i][1];
+                blockRecv->multiplayerId = gUnknown_03003090[i][2];
+                break;
+            }
+            case 0x8888:
+            {
+                if (gUnknown_03000D20[i].size > BLOCK_BUFFER_SIZE)
+                {
+                    u16 *buffer;
+                    u16 j;
+
+                    buffer = (u16 *)gDecompressionBuffer;
+                    for (j = 0; j < CMD_LENGTH - 1; j ++)
+                    {
+                        buffer[(gUnknown_03000D20[i].pos / 2) + j] = gUnknown_03003090[i][j + 1];
+                    }
+                }
+                else
+                {
+                    u16 j;
+
+                    for (j = 0; j < CMD_LENGTH - 1; j ++)
+                    {
+                        gBlockRecvBuffer[i][(gUnknown_03000D20[i].pos / 2) + j] = gUnknown_03003090[i][j + 1];
+                    }
+                }
+
+                gUnknown_03000D20[i].pos += (CMD_LENGTH - 1) * 2;
+
+                if (gUnknown_03000D20[i].pos >= gUnknown_03000D20[i].size)
+                {
+                    if (gUnknown_03003078[i] == TRUE)
+                    {
+                        struct LinkPlayerBlock *block;
+                        struct LinkPlayer *linkPlayer;
+
+                        block = (struct LinkPlayerBlock *)&gBlockRecvBuffer[i];
+                        linkPlayer = &gLinkPlayers[i];
+                        *linkPlayer = block->linkPlayer;
+                        if ((linkPlayer->version & 0xFF) == VERSION_RUBY || (linkPlayer->version & 0xFF) == VERSION_SAPPHIRE)
+                        {
+                            linkPlayer->name[10] = 0;
+                            linkPlayer->name[9] = 0;
+                            linkPlayer->name[8] = 0;
+                        }
+                        sub_800B524(linkPlayer);
+                        if (strcmp(block->magic1, gASCIIGameFreakInc) != 0
+                            || strcmp(block->magic2, gASCIIGameFreakInc) != 0)
+                        {
+                            SetMainCallback2(c2_800ACD4);
+                        }
+                        else
+                        {
+                            sub_8009A58(i);
+                        }
+                    }
+                    else
+                    {
+                        sub_800A588(i);
+                    }
+                }
+            }
+                break;
+            case 0x5FFF:
+                gUnknown_030030F0[i] = 1;
+                break;
+            case 0x2FFE:
+                gUnknown_030030EC[i] = 1;
+                break;
+            case 0xAAAA:
+                sub_800A418();
+                break;
+            case 0xCCCC:
+                SendBlock(0, gUnknown_082ED1A8[gUnknown_03003090[i][1]].address, gUnknown_082ED1A8[gUnknown_03003090[i][1]].size);
+                break;
+            case 0xCAFE:
+                gUnknown_03003020[i] = gUnknown_03003090[i][1];
+                break;
+        }
+    }
+}