1 files changed, 110 insertions, 0 deletions
diff --git a/arm9/asm/OS_reset.s b/arm9/asm/OS_reset.s
new file mode 100644
index 00000000..bdcc0f88
--- /dev/null
+++ b/arm9/asm/OS_reset.s
@@ -0,0 +1,110 @@
+    .include "asm/macros.inc"
+    .include "global.inc"
+
+    .text
+
+	arm_func_start OS_ResetSystem
+OS_ResetSystem: ; 0x020CD3B4
+	stmdb sp!, {r4,lr}
+	ldr r1, _020CD42C ; =0x027FFC40
+	mov r4, r0
+	ldrh r0, [r1, #0x0]
+	cmp r0, #0x2
+	bne _020CD3D0
+	bl OS_Terminate
+_020CD3D0:
+	bl OS_GetLockID
+	mov r0, r0, lsl #0x10
+	mov r0, r0, lsr #0x10
+	bl CARD_LockRom
+_020CD3E0:
+	mov r0, #0x0
+	bl MI_StopDma
+	mov r0, #0x1
+	bl MI_StopDma
+	mov r0, #0x2
+	bl MI_StopDma
+	mov r0, #0x3
+	bl MI_StopDma
+	mov r0, #0x40000
+	bl OS_SetIrqMask
+	mvn r0, #0x0
+	bl OS_ResetRequestIrqMask
+	ldr r1, _020CD430
+	mov r0, #0x10
+	str r4, [r1]
+	bl OSi_SendToPxi
+	bl OSi_DoResetSystem
+	ldmia sp!, {r4, lr}
+	bx lr
+_020CD42C: .word 0x027FFC40
+_020CD430: .word 0x027FFC20
+
+	arm_func_start OSi_SendToPxi
+OSi_SendToPxi: ; 0x020CD434
+	stmdb sp!, {r4-r6,lr}
+	mov r6, r0, lsl #0x8
+	mov r5, #0xc
+	mov r4, #0x0
+_020CD444:
+	mov r0, r5
+	mov r1, r6
+	mov r2, r4
+	bl PXI_SendWordByFifo
+_020CD454:
+	cmp r0, #0x0
+	bne _020CD444
+	ldmia sp!, {r4-r6, lr}
+	bx lr
+
+	arm_func_start OSi_CommonCallback
+OSi_CommonCallback: ; OSi_CommonCallback
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	and r0, r1, #0x7f00
+	mov r0, r0, lsl #0x8
+	mov r0, r0, lsr #0x10
+	cmp r0, #0x10
+	ldreq r0, _020CD4A4 ; =OSi_IsResetOccurred
+	moveq r1, #0x1
+	streqh r1, [r0, #0x0]
+	addeq sp, sp, #0x4
+	ldmeqia sp!, {lr}
+	bxeq lr
+	bl OS_Terminate
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
+	.balign 4
+_020CD4A4: .word OSi_IsResetOccurred
+
+	arm_func_start OS_InitReset
+OS_InitReset: ; 0x020CD4A8
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x4
+	ldr r0, _020CD508 ; =0x021D37DC
+	ldrh r1, [r0, #0x0]
+	cmp r1, #0x0
+	addne sp, sp, #0x4
+	ldmneia sp!, {r4-r5,lr}
+	bxne lr
+	mov r1, #0x1
+	strh r1, [r0, #0x0]
+	bl PXI_Init
+	mov r5, #0xc
+	mov r4, #0x1
+_020CD4DC:
+	mov r0, r5
+	mov r1, r4
+	bl PXI_IsCallbackReady
+_020CD4E8:
+	cmp r0, #0x0
+	beq _020CD4DC
+	ldr r1, _020CD50C
+	mov r0, #0xC
+	bl PXI_SetFifoRecvCallback
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r5, lr}
+	bx lr
+_020CD508: .word OSi_IsInitReset
+_020CD50C: .word OSi_CommonCallback