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Decompile STWI_start_command

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This commit is contained in:
shinyquagsire23 2017-09-11 17:49:50 -06:00
parent 3c51ecded9
commit a8a6816f0e
2 changed files with 26 additions and 60 deletions
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56
asm/librfu.s
View file

@ -4,62 +4,6 @@
.text
thumb_func_start STWI_start_Command
STWI_start_Command: @ 82E3428
push {r4,r5,lr}
ldr r5, _082E3480
ldr r0, [r5]
ldr r3, [r0, 0x24]
ldrb r1, [r0, 0x4]
lsls r1, 8
ldrb r0, [r0, 0x6]
ldr r2, _082E3484
orrs r0, r2
orrs r1, r0
str r1, [r3]
ldr r2, _082E3488
ldr r1, [r5]
ldr r0, [r1, 0x24]
ldr r0, [r0]
str r0, [r2]
movs r2, 0
str r2, [r1]
movs r0, 0x1
strb r0, [r1, 0x5]
ldr r4, _082E348C
ldrh r3, [r4]
strh r2, [r4]
ldr r2, _082E3490
ldr r1, [r5]
movs r0, 0x8
ldrb r1, [r1, 0xA]
lsls r0, r1
ldrh r1, [r2]
orrs r0, r1
strh r0, [r2]
ldrh r0, [r2]
movs r1, 0x80
orrs r0, r1
strh r0, [r2]
strh r3, [r4]
ldr r1, _082E3494
ldr r2, _082E3498
adds r0, r2, 0
strh r0, [r1]
movs r0, 0
pop {r4,r5}
pop {r1}
bx r1
.align 2, 0
_082E3480: .4byte gRfuState
_082E3484: .4byte 0x99660000
_082E3488: .4byte 0x04000120
_082E348C: .4byte 0x04000208
_082E3490: .4byte 0x04000200
_082E3494: .4byte 0x04000128
_082E3498: .4byte 0x00005083
thumb_func_end STWI_start_Command
thumb_func_start STWI_restart_Command
STWI_restart_Command: @ 82E349C
push {r4,lr}

30
src/librfu.c
View file

@ -73,7 +73,7 @@ struct RfuStruct
vs32 unk_0;
u8 txParams;
u8 unk_5;
u8 unk_6;
u8 activeCommand;
u8 unk_7;
u8 unk_8;
u8 unk_9;
@ -187,7 +187,7 @@ void AgbRFU_SoftReset(void)
gRfuState->unk_0 = 0;
gRfuState->txParams = 0;
gRfuState->unk_5 = 0;
gRfuState->unk_6 = 0;
gRfuState->activeCommand = 0;
gRfuState->unk_7 = 0;
gRfuState->unk_8 = 0;
gRfuState->unk_9 = 0;
@ -215,7 +215,7 @@ u16 STWI_read_status(u8 index)
case 2:
return gRfuState->unk_0;
case 3:
return gRfuState->unk_6;
return gRfuState->activeCommand;
default:
return 0xFFFF;
}
@ -702,7 +702,7 @@ u16 STWI_init(u8 request)
else
{
gRfuState->unk_2c = TRUE;
gRfuState->unk_6 = request;
gRfuState->activeCommand = request;
gRfuState->unk_0 = 0;
gRfuState->txParams = 0;
gRfuState->unk_5 = 0;
@ -719,3 +719,25 @@ u16 STWI_init(u8 request)
return FALSE;
}
}
int STWI_start_Command()
{
u16 imeTemp;
// Yes, it matters that it's casted to a u32...
*(u32*)gRfuState->txPacket->rfuPacket8.data = 0x99660000 | (gRfuState->txParams << 8) | gRfuState->activeCommand;
REG_SIODATA32 = gRfuState->txPacket->rfuPacket32.command;
gRfuState->unk_0 = 0;
gRfuState->unk_5 = 1;
imeTemp = REG_IME;
REG_IME = 0;
REG_IE |= (INTR_FLAG_TIMER0 << gRfuState->timerSelect);
REG_IE |= INTR_FLAG_SERIAL;
REG_IME = imeTemp;
REG_SIOCNT = SIO_INTR_ENABLE | SIO_32BIT_MODE | SIO_MULTI_BUSY | SIO_115200_BPS;
return 0;
}