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-rw-r--r--asm/link.s165
-rw-r--r--include/librfu.h1
-rw-r--r--include/link_rfu.h17
-rw-r--r--src/link.c85
-rw-r--r--sym_common.txt6
5 files changed, 105 insertions, 169 deletions
diff --git a/asm/link.s b/asm/link.s
index f0250361f..cff75670e 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -7,167 +7,6 @@
// RFU; bss indicates that no file boundary exists here
- thumb_func_start sub_800C000
-sub_800C000: @ 800C000
- push {r4,r5,lr}
- ldr r2, =gUnknown_03004140
- movs r0, 0
- strb r0, [r2, 0x5]
- strb r0, [r2, 0x4]
- movs r1, 0xFF
- strb r1, [r2, 0x6]
- strb r0, [r2, 0x7]
- strb r0, [r2, 0x10]
- strb r0, [r2, 0xC]
- adds r1, r2, 0
- adds r1, 0x24
- strb r0, [r1]
- adds r1, 0xC
- strb r0, [r1]
- movs r3, 0
- adds r5, r2, 0
- adds r5, 0x28
- movs r4, 0
- adds r2, 0x34
-_0800C028:
- lsls r1, r3, 1
- adds r0, r1, r5
- strh r4, [r0]
- adds r1, r2
- strh r4, [r1]
- adds r0, r3, 0x1
- lsls r0, 24
- lsrs r3, r0, 24
- cmp r3, 0x3
- bls _0800C028
- pop {r4,r5}
- pop {r0}
- bx r0
- .pool
- thumb_func_end sub_800C000
-
- thumb_func_start sub_800C048
-sub_800C048: @ 800C048
- ldr r1, =gUnknown_03004140
- movs r0, 0x15
- strb r0, [r1, 0x4]
- bx lr
- .pool
- thumb_func_end sub_800C048
-
- thumb_func_start sub_800C054
-sub_800C054: @ 800C054
- push {r4-r7,lr}
- mov r7, r8
- push {r7}
- adds r6, r3, 0
- lsls r0, 24
- lsrs r5, r0, 24
- lsls r1, 16
- lsrs r7, r1, 16
- lsls r2, 16
- lsrs r2, 16
- mov r8, r2
- ldr r1, =gUnknown_03004140
- ldrb r0, [r1, 0x4]
- cmp r0, 0
- beq _0800C090
- cmp r0, 0x8
- bne _0800C07A
- cmp r5, 0x1
- beq _0800C090
-_0800C07A:
- movs r0, 0x1
- strh r0, [r1, 0x14]
- movs r0, 0xF3
- movs r1, 0x1
- bl sub_800D30C
- movs r0, 0x1
- b _0800C122
- .pool
-_0800C090:
- bl rfu_getMasterSlave
- lsls r0, 24
- cmp r0, 0
- bne _0800C0B0
- ldr r1, =gUnknown_03004140
- movs r0, 0x2
- strh r0, [r1, 0x14]
- movs r0, 0xF3
- movs r1, 0x1
- bl sub_800D30C
- movs r0, 0x2
- b _0800C122
- .pool
-_0800C0B0:
- movs r2, 0
- ldrh r0, [r6]
- ldr r4, =0x0000ffff
- adds r1, r6, 0x2
- ldr r3, =gUnknown_03004140
- cmp r0, r4
- beq _0800C0D0
-_0800C0BE:
- adds r0, r2, 0x1
- lsls r0, 24
- lsrs r2, r0, 24
- cmp r2, 0xF
- bhi _0800C0D0
- ldrh r0, [r1]
- adds r1, 0x2
- cmp r0, r4
- bne _0800C0BE
-_0800C0D0:
- cmp r2, 0x10
- bne _0800C0EC
- movs r0, 0x4
- strh r0, [r3, 0x14]
- movs r0, 0xF3
- movs r1, 0x1
- bl sub_800D30C
- movs r0, 0x4
- b _0800C122
- .pool
-_0800C0EC:
- cmp r5, 0x1
- bls _0800C0FA
- movs r0, 0x1
- strb r0, [r3, 0x7]
- movs r5, 0x1
- movs r7, 0
- b _0800C0FE
-_0800C0FA:
- movs r0, 0
- strb r0, [r3, 0x7]
-_0800C0FE:
- cmp r5, 0
- beq _0800C108
- movs r0, 0x5
- strb r0, [r3, 0x4]
- b _0800C116
-_0800C108:
- movs r0, 0x9
- strb r0, [r3, 0x4]
- ldrb r0, [r3, 0xB]
- cmp r0, 0
- beq _0800C116
- movs r0, 0x2
- strb r0, [r3, 0xB]
-_0800C116:
- strb r5, [r3, 0x6]
- strh r7, [r3, 0x1A]
- mov r0, r8
- strh r0, [r3, 0x26]
- str r6, [r3, 0x20]
- movs r0, 0
-_0800C122:
- pop {r3}
- mov r8, r3
- pop {r4-r7}
- pop {r1}
- bx r1
- thumb_func_end sub_800C054
-
thumb_func_start sub_800C12C
sub_800C12C: @ 800C12C
push {r4-r7,lr}
@@ -1255,7 +1094,7 @@ _0800CA0C:
_0800CA18:
cmp r6, 0
bne _0800CA3C
- ldr r4, =gUnknown_03004150
+ ldr r4, =gUnknown_03004140+0x10
mov r0, sp
adds r1, r4, 0
bl rfu_getConnectParentStatus
@@ -1293,7 +1132,7 @@ _0800CA60:
beq _0800CA66
b _0800CC8A
_0800CA66:
- ldr r4, =gUnknown_03004150
+ ldr r4, =gUnknown_03004140+0x10
mov r0, sp
adds r1, r4, 0
bl rfu_getConnectParentStatus
diff --git a/include/librfu.h b/include/librfu.h
index 9b82de0b7..3d1970437 100644
--- a/include/librfu.h
+++ b/include/librfu.h
@@ -149,3 +149,4 @@ u32 rfu_REQBN_softReset_and_checkID(void);
void rfu_REQ_sendData(u8);
void rfu_setMSCCallback(void (*func)(u16));
void rfu_setREQCallback(void (*func)(u16, u16));
+bool8 rfu_getMasterSlave(void);
diff --git a/include/link_rfu.h b/include/link_rfu.h
index 88737559f..29f2a724c 100644
--- a/include/link_rfu.h
+++ b/include/link_rfu.h
@@ -27,11 +27,22 @@ struct UnkRfuStruct_1 {
u8 unk_0b;
u8 unk_0c;
u8 unk_0d;
- u8 filler_0e[10];
+ u8 filler_0e[2];
+ u8 unk_10;
+ u8 filler_11[3];
+ u16 unk_14;
+ u8 filler_16[2];
u16 unk_18;
- u8 filler_1a[0x18];
+ u16 unk_1a;
+ u8 filler_1c[4];
+ u16 *unk_20;
+ u8 unk_24;
+ u16 unk_26;
+ u16 unk_28[4];
+ u8 unk_30;
+ // aligned
u16 unk_32;
- u8 filler_34[8];
+ u16 unk_34[4];
struct UnkLinkRfuStruct_02022B2C *unk_3c;
void (*unk_40)(u8);
void (*unk_44)(void);
diff --git a/src/link.c b/src/link.c
index 96234ad04..9fae98454 100644
--- a/src/link.c
+++ b/src/link.c
@@ -174,6 +174,8 @@ void sub_800CEB0(u16 unk0);
void sub_800C7B4(u16 unk0, u16 unk1);
void sub_800C000(void);
+void sub_800D30C(u8 a0, u8 a1);
+
// .rodata
ALIGNED(4) const u16 gWirelessLinkDisplayPal[] = INCBIN_U16("graphics/interface/wireless_link_display.gbapal");
@@ -2524,3 +2526,86 @@ void sub_800BFCC(struct UnkLinkRfuStruct_02022B2C *unk0)
gUnknown_03004140.unk_0b = 1;
}
}
+
+void sub_800C000(void)
+{
+ u8 i;
+
+ gUnknown_03004140.unk_05 = 0;
+ gUnknown_03004140.unk_04 = 0;
+ gUnknown_03004140.unk_06 = -1;
+ gUnknown_03004140.unk_07 = 0;
+ gUnknown_03004140.unk_10 = 0;
+ gUnknown_03004140.unk_0c = 0;
+ gUnknown_03004140.unk_24 = 0;
+ gUnknown_03004140.unk_30 = 0;
+ for (i = 0; i < 4; i++)
+ {
+ gUnknown_03004140.unk_28[i] = 0;
+ gUnknown_03004140.unk_34[i] = 0;
+ }
+}
+
+void sub_800C048(void)
+{
+ gUnknown_03004140.unk_04 = 0x15;
+}
+
+u8 sub_800C054(u8 r5, u16 r7, u16 r8, u16 *r6)
+{
+ u8 i;
+ u16 *buffer;
+
+ if (gUnknown_03004140.unk_04 != 0 && (gUnknown_03004140.unk_04 != 0x08 || r5 != 1))
+ {
+ gUnknown_03004140.unk_14 = 1;
+ sub_800D30C(0xf3, 0x01);
+ return 1;
+ }
+ if (!rfu_getMasterSlave())
+ {
+ gUnknown_03004140.unk_14 = 2;
+ sub_800D30C(0xf3, 0x01);
+ return 2;
+ }
+ for (i = 0, buffer = r6; i < 16; i++)
+ {
+ if (*buffer++ == 0xFFFF)
+ {
+ break;
+ }
+ }
+ if (i == 16)
+ {
+ gUnknown_03004140.unk_14 = 4;
+ sub_800D30C(0xf3, 0x01);
+ return 4;
+ }
+ if (r5 > 1)
+ {
+ gUnknown_03004140.unk_07 = 1;
+ r5 = 1;
+ r7 = 0;
+ }
+ else
+ {
+ gUnknown_03004140.unk_07 = 0;
+ }
+ if (r5 != 0)
+ {
+ gUnknown_03004140.unk_04 = 5;
+ }
+ else
+ {
+ gUnknown_03004140.unk_04 = 9;
+ if (gUnknown_03004140.unk_0b)
+ {
+ gUnknown_03004140.unk_0b = 2;
+ }
+ }
+ gUnknown_03004140.unk_06 = r5;
+ gUnknown_03004140.unk_1a = r7;
+ gUnknown_03004140.unk_26 = r8;
+ gUnknown_03004140.unk_20 = r6;
+ return 0;
+}
diff --git a/sym_common.txt b/sym_common.txt
index 298c4470e..488ccd9a7 100644
--- a/sym_common.txt
+++ b/sym_common.txt
@@ -14,10 +14,10 @@ gUnknown_03002F70: @ 3002F70
.include "link.o"
gUnknown_03004140: @ 3004140
- .space 0x10
+ .space 0x48
-gUnknown_03004150: @ 3004150
- .space 0x40
+gUnknown_03004188: @ 3004150
+ .space 0x8
gUnknown_03004190: @ 3004190
.space 0xE70
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-31 16:26:18 +0000