Merge pull request #26 from PikalaxALT/pikalax_work

Disassemble ITCM and split unk_020C9C2C.s

1 files changed, 505 insertions, 0 deletions

diff --git a/asm/arm9_itcm.s b/asm/arm9_itcm.s
new file mode 100644
index 00000000..79c0de28
--- /dev/null
+++ b/asm/arm9_itcm.s
@@ -0,0 +1,505 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .itcm
+
+	; OS
+	arm_func_start OS_IrqHandler
+OS_IrqHandler: ; 0x01FF8000
+	stmfd sp!, {lr}
+	mov ip, #0x04000000
+	add ip, ip, #0x210
+	ldr r1, [ip, #-8]
+	cmp r1, #0
+	ldmeqfd sp!, {pc}
+	ldmia ip, {r1, r2}
+	ands r1, r1, r2
+	ldmeqfd sp!, {pc}
+	mov r3, #0x80000000
+_01FF8028:
+	clz r0, r1
+	bics r1, r1, r3, lsr r0
+	bne _01FF8028
+	mov r1, r3, lsr r0
+	str r1, [ip, #0x4]
+	rsbs r0, r0, #0x1f
+	ldr r1, _01FF8050 ; =0x027E0000
+	ldr r0, [r1, r0, lsl #2]
+	ldr lr, _01FF8054 ; =0x01FF70B8
+	bx r0
+_01FF8050: .word OS_IRQTable
+_01FF8054: .word OS_IrqHandler_ThreadSwitch
+
+	arm_func_start OS_IrqHandler_ThreadSwitch
+OS_IrqHandler_ThreadSwitch: ; 01FF8058
+	ldr ip, _01FF81A4
+	mov r3, #0x0
+	ldr ip, [ip]
+	mov r2, #0x1
+	cmp ip, #0x0
+	beq _01FF80A8
+_01FF8070:
+	str r2, [ip, #0x64]
+	str r3, [ip, #0x78]
+	str r3, [ip, #0x7c]
+	ldr r0, [ip, #0x80]
+	str r3, [ip, #0x80]
+	mov ip, r0
+	cmp ip, #0x0
+	bne _01FF8070
+	ldr ip, _01FF81A4
+	str r3, [ip]
+	str r3, [ip, #0x4]
+	ldr ip, _01FF81A8
+	mov r1, #0x1
+	strh r1, [ip]
+_01FF80A8:
+	ldr ip, _01FF81A8
+	ldrh r1, [ip]
+	cmp r1, #0x0
+	ldreq pc, [sp], #0x4
+	mov r1, #0x0
+	strh r1, [ip]
+	mov r3, #0xd2
+	msr CPSR_c, r3
+	add r2, ip, #0x8
+	ldr r1, [r2]
+_01FF80D0:
+	cmp r1, #0x0
+	ldrneh r0, [r1, #0x64]
+	cmpne r0, #0x1
+	ldrne r1, [r1, #0x68]
+	bne _01FF80D0
+	cmp r1, #0x0
+	bne _01FF80F8
+_01FF80EC:
+	mov r3, #0x92
+	msr CPSR_c, r3
+	ldr pc, [sp], #0x4
+_01FF80F8:
+	ldr r0, [ip, #0x4]
+	cmp r1, r0
+	beq _01FF80EC
+	ldr r3, [ip, #0xC]
+	cmp r3, #0x0
+	beq _01FF8120
+	stmdb sp!, {r0, r1, ip}
+	mov lr, pc
+	bx r3
+	ldmia sp!, {r0, r1, ip}
+_01FF8120:
+	str r1, [ip, #0x4]
+	mrs r2, SPSR
+	str r2, [r0, #0x0]!
+	stmdb sp!, {r0, r1}
+	add r0, r0, #0x0
+	add r0, r0, #0x48
+	ldr r1, _01FF81AC
+	blx r1
+	ldmia sp!, {r0, r1}
+	ldmib sp!, {r2, r3}
+	stmib r0!, {r2, r3}
+	ldmib sp!, {r2, r3, ip, lr}
+	stmib r0!, {r2, r3, r4, r5, r6, r7, r8, r9, sl, fp, ip, sp, lr}^
+	stmib r0!, {lr}
+	mov r3, #0xd3
+	msr CPSR_c, r3
+	stmib r0!, {sp}
+	stmfd sp!, {r1}
+	add r0, r1, #0x0
+	add r0, r0, #0x48
+	ldr r1, _01FF81B0
+	blx r1
+	ldmfd sp!, {r1}
+	ldr sp, [r1, #0x44]
+	mov r3, #0xd2
+	msr CPSR_c, r3
+	ldr r2, [r1, #0x0]!
+	msr SPSR_fc, r2
+	ldr lr, [r1, #0x40]
+	ldmib r1!, {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, sl, fp, ip, sp, lr}^
+	nop
+	stmda sp!, {r0, r1, r2, r3, ip, lr}
+	ldmfd sp!, {pc}
+_01FF81A4: .word OSi_IrqThreadQueue
+_01FF81A8: .word OSi_ThreadInfo
+_01FF81AC: .word CP_SaveContext
+_01FF81B0: .word CP_RestoreContext
+
+	.section .itcm
+	arm_func_start OSi_DoBoot
+OSi_DoBoot: ; 0x01FF81B4
+	mov ip, #0x04000000
+	str ip, [ip, #0x208]
+	ldr r1, _01FF8260
+	add r1, r1, #0x3fc0
+	add r1, r1, #0x3c
+	mov r0, #0x0
+	str r0, [r1]
+	ldr r1, _01FF8264
+_01FF81D4:
+	ldrh r0, [r1]
+	and r0, r0, #0xf
+	cmp r0, #0x1
+	bne _01FF81D4
+	mov r0, #0x100
+	strh r0, [r1]
+	mov r0, #0x0
+	ldr r3, _01FF8268
+	ldr r4, [r3]
+	ldr r1, _01FF826C
+	mov r2, #0x80
+	bl OSi_CpuClear32
+	str r4, [r3]
+	ldr r1, _01FF8270
+	mov r2, #0x18
+	bl OSi_CpuClear32
+	ldr r1, _01FF8274
+	strh r0, [r1]
+	ldr r1, _01FF8278
+	mov r2, #0x64
+	bl OSi_CpuClear32
+	ldr r1, _01FF8264
+_01FF822C:
+	ldrh r0, [r1]
+	and r0, r0, #0xf
+	cmp r0, #0x1
+	beq _01FF822C
+	mov r0, #0x0
+	strh r0, [r1]
+	ldr r3, _01FF827C
+	ldr ip, [r3, #0x24]
+	mov lr, ip
+	ldr fp, _01FF8270
+	ldmia fp, {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, sl}
+	mov fp, #0x0
+	bx ip
+_01FF8260: .word SDK_AUTOLOAD_DTCM_START
+_01FF8264: .word 0x04000180
+_01FF8268: .word 0x027FFD9C
+_01FF826C: .word 0x027FFD80
+_01FF8270: .word 0x027FFF80
+_01FF8274: .word 0x027FFF98
+_01FF8278: .word 0x027FFF9C
+_01FF827C: .word 0x027FFE00
+
+	arm_func_start OSi_CpuClear32
+OSi_CpuClear32: ; 01FF8280
+	add ip, r1, r2
+_01FF8284:
+	cmp r1, ip
+	stmltia r1!, {r0}
+	blt _01FF8284
+	bx lr
+
+	arm_func_start OSi_ReadCardRom32
+OSi_ReadCardRom32: ; 01FF8294
+	stmdb sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	sub	sp, sp, #4
+	ldr	r4, _01FF8390
+	ldr	r3, _01FF8394
+	ldr	r4, [r4]
+	and	r3, r0, r3
+	bic	r4, r4, #117440512	; 0x7000000
+	orr	sl, r4, #-1593835520	; 0xa1000000
+	rsb	r9, r3, #0
+	ldr	r4, _01FF8398
+_01FF82BC:
+	ldr	r3, [r4]
+	ands	r3, r3, #-2147483648	; 0x80000000
+	bne	_01FF82BC
+	ldr	r3, _01FF839C
+	mov	r4, #128	; 0x80
+	cmp	r9, r2
+	addge	sp, sp, #4
+	strb	r4, [r3]
+	add	r0, r0, r9
+	ldmgeia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	bxge	lr
+	ldr	r3, _01FF83A0
+	ldr	ip, _01FF8398
+	ldr	r5, _01FF83A4
+	ldr	r4, _01FF83A8
+	mov	r7, r0, lsr #8
+	mov	r6, #183	; 0xb7
+	mov	lr, #0
+_01FF8304:
+	strb	r6, [r5]
+	mov	r8, r0, lsr #24
+	strb	r8, [r4]
+	ldr	r8, _01FF83AC
+	mov	fp, r0, lsr #16
+	strb	fp, [r8]
+	ldr	r8, _01FF83B0
+	strb	r7, [r8]
+	ldr	r8, _01FF83B4
+	strb	r0, [r8]
+	ldr	r8, _01FF83B8
+	strb	lr, [r8]
+	ldr	r8, _01FF83BC
+	strb	lr, [r8]
+	ldr	r8, _01FF83C0
+	strb	lr, [r8]
+	str	sl, [ip]
+_01FF8348:
+	ldr	r8, [ip]
+	ands	fp, r8, #8388608	; 0x800000
+	beq	_01FF836C
+	cmp	r9, #0
+	ldr	fp, [r3]
+	blt	_01FF8368
+	cmp	r9, r2
+	strlt	fp, [r1, r9]
+_01FF8368:
+	add	r9, r9, #4
+_01FF836C:
+	ands	r8, r8, #-2147483648	; 0x80000000
+	bne	_01FF8348
+	cmp	r9, r2
+	add	r7, r7, #2
+	add	r0, r0, #512	; 0x200
+	blt	_01FF8304
+	add	sp, sp, #4
+	ldmia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	bx	lr
+_01FF8390:	.word 0x027FFE60
+_01FF8394:	.word 0x000001FF
+_01FF8398:	.word 0x040001A4
+_01FF839C:	.word 0x040001A1
+_01FF83A0:	.word 0x04100010
+_01FF83A4:	.word 0x040001A8
+_01FF83A8:	.word 0x040001A9
+_01FF83AC:	.word 0x040001AA
+_01FF83B0:	.word 0x040001AB
+_01FF83B4:	.word 0x040001AC
+_01FF83B8:	.word 0x040001AD
+_01FF83BC:	.word 0x040001AE
+_01FF83C0:	.word 0x040001AF
+
+	arm_func_start OSi_ReloadRomData
+OSi_ReloadRomData: ; 0x01FF83C4
+	stmdb sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	sub	sp, sp, #4
+	ldr	r0, _01FF8484
+	ldr	sl, [r0]
+	cmp	sl, #32768	; 0x8000
+	bcc	_01FF83EC
+	ldr	r1, _01FF8488
+	mov	r0, sl
+	mov	r2, #352	; 0x160
+	bl	OSi_ReadCardRom32
+_01FF83EC:
+	ldr	r5, _01FF848C
+	ldr	r4, _01FF8490
+	ldr	r3, _01FF8494
+	ldr	r2, _01FF8498
+	ldr	r1, _01FF849C
+	ldr	r9, [r5]
+	ldr	r0, _01FF84A0
+	ldr	r8, [r4]
+	ldr	r7, [r3]
+	ldr	r6, [r2]
+	ldr	r5, [r1]
+	ldr	r4, [r0]
+	bl	OS_DisableInterrupts ; 0x1e02b0
+	mov	fp, r0
+	bl	DC_StoreAll ; 0x1df064
+	bl	DC_InvalidateAll ; 0x1df058
+	mov	r0, fp
+	bl	OS_RestoreInterrupts ; 0x1e02c4
+	bl	IC_InvalidateAll ; 0x1df12c
+	bl	DC_WaitWriteBufferEmpty ; 0x1df120
+	add	r9, r9, sl
+	cmp	r9, #32768	; 0x8000
+	rsbcc	r0, r9, #32768	; 0x8000
+	addcc	r8, r8, r0
+	subcc	r7, r7, r0
+	movcc	r9, #32768	; 0x8000
+	add	r6, r6, sl
+	mov	r0, r9
+	mov	r1, r8
+	mov	r2, r7
+	bl	OSi_ReadCardRom32 ; 0x10b234
+	mov	r0, r6
+	mov	r1, r5
+	mov	r2, r4
+	bl	OSi_ReadCardRom32
+	add	sp, sp, #4
+	ldmia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	bx	lr
+_01FF8484:	.word 0x027FFC2C
+_01FF8488:	.word 0x027FFE00
+_01FF848C:	.word 0x027FFE20
+_01FF8490:	.word 0x027FFE28
+_01FF8494:	.word 0x027FFE2C
+_01FF8498:	.word 0x027FFE30
+_01FF849C:	.word 0x027FFE38
+_01FF84A0:	.word 0x027FFE3C
+
+	arm_func_start OSi_DoResetSystem
+OSi_DoResetSystem: ; 0x01FF84A4
+	stmfd	sp!, {lr}
+	sub	sp, sp, #4
+	ldr	r0, _01FF84DC
+_01FF84B0:
+	ldrh	r1, [r0]
+	cmp	r1, #0
+	beq	_01FF84B0
+	ldr	r0, _01FF84E0
+	mov	r1, #0
+	strh	r1, [r0]
+	bl	OSi_ReloadRomData
+	bl	OSi_DoBoot
+	add	sp, sp, #4
+	ldmfd	sp!, {lr}
+	bx	lr
+_01FF84DC:	.word OSi_IsResetOccurred
+_01FF84E0:	.word 0x04000208
+
+	; MI
+	arm_func_start MIi_DmaSetParams_wait_noInt
+MIi_DmaSetParams_wait_noInt: ; 0x01FF84E4
+	stmdb sp!,	{r4, lr}
+	mov	ip, #12
+	mul	r4, r0, ip
+	add	ip, r4, #67108864	; 0x4000000
+	ldr	lr, [pc, #64]	; 0x10b4dc
+	str	r1, [ip, #176]	; 0xb0
+	add	r4, r4, lr
+	str	r2, [r4, #4]
+	str	r3, [r4, #8]
+	ldr	r1, [lr]
+	cmp	r0, #0
+	ldr	r0, [lr]
+	moveq	r1, #0
+	streq	r1, [r4]
+	streq	r1, [r4, #4]
+	ldreq	r0, _01FF8540
+	ldr	r1, _01FF853C
+	streq	r0, [r4, #8]
+	ldr	r0, [r1]
+	ldr	r0, [r1]
+	ldmia sp!,	{r4, lr}
+	bx	lr
+_01FF853C:	.word 0x040000B0
+_01FF8540:	.word 0x81400001
+
+	arm_func_start MIi_DmaSetParams_noInt
+MIi_DmaSetParams_noInt: ; 01FF8544
+	stmfd	sp!, {lr}
+	sub	sp, sp, #4
+	mov	ip, #12
+	mul	lr, r0, ip
+	ldr	r0, _01FF8578
+	add	ip, lr, #67108864	; 0x4000000
+	str	r1, [ip, #176]	; 0xb0
+	add	r0, lr, r0
+	str	r2, [r0, #4]
+	str	r3, [r0, #8]
+	add	sp, sp, #4
+	ldmfd	sp!, {lr}
+	bx	lr
+_01FF8578:	.word 0x040000B0
+
+	arm_func_start MIi_DmaSetParams_wait
+MIi_DmaSetParams_wait: ; 01FF857C
+	stmdb sp!,	{r4, r5, r6, r7, lr}
+	sub	sp, sp, #4
+	mov	r7, r0
+	mov	r6, r1
+	mov	r5, r2
+	mov	r4, r3
+	bl	OS_DisableInterrupts
+	mov	r1, #12
+	mul	r3, r7, r1
+	add	r1, r3, #67108864	; 0x4000000
+	ldr	r2, _01FF85E8
+	str	r6, [r1, #176]	; 0xb0
+	add	r3, r3, r2
+	str	r5, [r3, #4]
+	str	r4, [r3, #8]
+	ldr	r1, [r2]
+	cmp	r7, #0
+	ldr	r1, [r2]
+	moveq	r2, #0
+	streq	r2, [r3]
+	ldreq	r1, _01FF85EC
+	streq	r2, [r3, #4]
+	streq	r1, [r3, #8]
+	bl	OS_RestoreInterrupts
+	add	sp, sp, #4
+	ldmia sp!,	{r4, r5, r6, r7, lr}
+	bx	lr
+_01FF85E8:	.word 0x040000B0
+_01FF85EC:	.word 0x81400001
+
+	arm_func_start MIi_DmaSetParams
+MIi_DmaSetParams: ; 01FF85F0
+	stmdb sp!,	{r4, r5, r6, r7, lr}
+	sub	sp, sp, #4
+	mov	r7, r0
+	mov	r6, r1
+	mov	r5, r2
+	mov	r4, r3
+	bl	OS_DisableInterrupts
+	mov	r1, #12
+	mul	r3, r7, r1
+	ldr	r1, _01FF863C
+	add	r2, r3, #67108864	; 0x4000000
+	str	r6, [r2, #176]	; 0xb0
+	add	r1, r3, r1
+	str	r5, [r1, #4]
+	str	r4, [r1, #8]
+	bl	OS_RestoreInterrupts
+	add	sp, sp, #4
+	ldmia sp!,	{r4, r5, r6, r7, lr}
+	bx	lr
+_01FF863C:	.word 0x040000B0
+
+	arm_func_start MI_SendGXCommand
+MI_SendGXCommand: ; 0x01FF8640
+	stmdb sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	sub	sp, sp, #4
+	movs	r8, r2
+	mov	sl, r0
+	mov	r9, r1
+	addeq	sp, sp, #4
+	ldmeqia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	bxeq	lr
+	mov	r3, #0
+	bl	MIi_CheckDma0SourceAddress
+	mov	r0, #3
+	mul	r1, sl, r0
+	ldr	r0, [pc, #104]	; 0x10b680
+	add	r1, r1, #2
+	add	r7, r0, r1, lsl #2
+_01FF867C:
+	ldr	r0, [r7]
+	ands	r0, r0, #-2147483648	; 0x80000000
+	bne	_01FF867C
+	cmp	r8, #0
+	beq	_01FF86C8
+	ldr	fp, [pc, #76]	; 0x10b684
+	mov	r5, #472	; 0x1d8
+	ldr	r4, [pc, #72]	; 0x10b688
+_01FF869C:
+	cmp	r8, #472	; 0x1d8
+	movhi	r6, r5
+	movls	r6, r8
+	mov	r0, sl
+	mov	r1, r9
+	mov	r2, fp
+	orr	r3, r4, r6, lsr #2
+	bl	MIi_DmaSetParams
+	subs	r8, r8, r6
+	add	r9, r9, r6
+	bne	_01FF869C
+_01FF86C8:
+	ldr	r0, [r7]
+	ands	r0, r0, #-2147483648	; 0x80000000
+	bne	_01FF86C8
+	add	sp, sp, #4
+	ldmia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
+	bx	lr
+_01FF86E0:	.word 0x040000B0
+_01FF86E4:	.word 0x04000400
+_01FF86E8:	.word 0x84400000