1 files changed, 239 insertions, 0 deletions
diff --git a/arm9/asm/OS_interrupt.s b/arm9/asm/OS_interrupt.s
new file mode 100644
index 00000000..b2ba8e4e
--- /dev/null
+++ b/arm9/asm/OS_interrupt.s
@@ -0,0 +1,239 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+
+	.text
+
+	arm_func_start OS_SetIrqStackChecker
+OS_SetIrqStackChecker: ; 0x020C9DAC
+	ldr ip, _020C9DD0 ; =0x027E0000
+	ldr r3, _020C9DD4 ; =0xFDDB597D
+	add r0, r12, #0x3000
+	ldr r2, _020C9DD8 ; =0x7BF9DD5B
+	ldr r1, _020C9DDC ; =0x00000400
+	str r3, [r0, #0xf7c]
+	add r0, r12, #0x3f80
+	str r2, [r0, -r1]
+	bx lr
+	.balign 4
+_020C9DD0: .word 0x027E0000
+_020C9DD4: .word 0xFDDB597D
+_020C9DD8: .word 0x7BF9DD5B
+_020C9DDC: .word 0x00000400
+
+	arm_func_start OS_ResetRequestIrqMask
+OS_ResetRequestIrqMask: ; 0x020C9DE0
+	ldr ip, _020C9E0C ; =0x04000208
+	mov r1, #0x0
+	ldrh r3, [r12, #0x0]
+	ldr r2, _020C9E10 ; =0x04000214
+	strh r1, [r12, #0x0]
+	ldr r1, [r2, #0x0]
+	str r0, [r2, #0x0]
+	ldrh r0, [r12, #0x0]
+	mov r0, r1
+	strh r3, [r12, #0x0]
+	bx lr
+	.balign 4
+_020C9E0C: .word 0x04000208
+_020C9E10: .word 0x04000214
+
+	arm_func_start OS_DisableIrqMask
+OS_DisableIrqMask: ; 0x020C9E14
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	ldr lr, _020C9E54 ; =0x04000208
+	mov r3, #0x0
+	ldrh r12, [lr, #0x0]
+	ldr r2, _020C9E58 ; =0x04000210
+	mvn r1, r0
+	strh r3, [lr, #0x0]
+	ldr r0, [r2, #0x0]
+	and r1, r0, r1
+	str r1, [r2, #0x0]
+	ldrh r1, [lr, #0x0]
+	strh r12, [lr, #0x0]
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
+	.balign 4
+_020C9E54: .word 0x04000208
+_020C9E58: .word 0x04000210
+
+	arm_func_start OS_EnableIrqMask
+OS_EnableIrqMask: ; 0x020C9E5C
+	ldr ip, _020C9E8C ; =0x04000208
+	mov r1, #0x0
+	ldrh r3, [r12, #0x0]
+	ldr r2, _020C9E90 ; =0x04000210
+	strh r1, [r12, #0x0]
+	ldr r1, [r2, #0x0]
+	orr r0, r1, r0
+	str r0, [r2, #0x0]
+	ldrh r0, [r12, #0x0]
+	mov r0, r1
+	strh r3, [r12, #0x0]
+	bx lr
+	.balign 4
+_020C9E8C: .word 0x04000208
+_020C9E90: .word 0x04000210
+
+	arm_func_start OS_SetIrqMask
+OS_SetIrqMask: ; 0x020C9E94
+	ldr ip, _020C9EC0 ; =0x04000208
+	mov r1, #0x0
+	ldrh r3, [r12, #0x0]
+	ldr r2, _020C9EC4 ; =0x04000210
+	strh r1, [r12, #0x0]
+	ldr r1, [r2, #0x0]
+	str r0, [r2, #0x0]
+	ldrh r0, [r12, #0x0]
+	mov r0, r1
+	strh r3, [r12, #0x0]
+	bx lr
+	.balign 4
+_020C9EC0: .word 0x04000208
+_020C9EC4: .word 0x04000210
+
+	arm_func_start OSi_EnterTimerCallback
+OSi_EnterTimerCallback: ; 0x020C9EC8
+	stmdb sp!, {r4,lr}
+	mov r3, #0xc
+	mul r4, r0, r3
+	ldr ip, _020C9F08 ; =0x021D344C
+	add r0, r0, #0x3
+	mov r3, #0x1
+	mov r0, r3, lsl r0
+	ldr r3, _020C9F0C ; =0x021D3454
+	str r1, [r12, r4]
+	str r2, [r3, r4]
+	bl OS_EnableIrqMask
+	ldr r0, _020C9F10 ; =0x021D3450
+	mov r1, #0x1
+	str r1, [r0, r4]
+	ldmia sp!, {r4,lr}
+	bx lr
+	.balign 4
+_020C9F08: .word OSi_IrqCallbackInfo+0x30
+_020C9F0C: .word OSi_IrqCallbackInfo+0x38
+_020C9F10: .word OSi_IrqCallbackInfo+0x34
+
+	arm_func_start OSi_EnterDmaCallback
+OSi_EnterDmaCallback: ; 0x020C9F14
+	stmdb sp!, {r4-r6,lr}
+	mov r3, #0xc
+	mul r6, r0, r3
+	ldr ip, _020C9F54 ; =OSi_IrqCallbackInfo
+	add r4, r0, #0x8
+	mov r5, #0x1
+	mov r0, r5, lsl r4
+	ldr r3, _020C9F58 ; =0x021D3424
+	str r1, [r12, r6]
+	str r2, [r3, r6]
+	bl OS_EnableIrqMask
+	and r1, r0, r5, lsl r4
+	ldr r0, _020C9F5C ; =0x021D3420
+	str r1, [r0, r6]
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+	.balign 4
+_020C9F54: .word OSi_IrqCallbackInfo
+_020C9F58: .word OSi_IrqCallbackInfo + 8
+_020C9F5C: .word OSi_IrqCallbackInfo + 4
+
+	arm_func_start OS_GetIrqFunction
+OS_GetIrqFunction: ; 0x020C9F60
+	ldr r2, _020C9FE4 ; =0x027E0000
+	mov r3, #0x0
+_020C9F68:
+	ands r1, r0, #0x1
+	beq _020C9FC8
+	cmp r3, #0x8
+	blt _020C9F98
+	cmp r3, #0xb
+	bgt _020C9F98
+	sub r1, r3, #0x8
+	mov r0, #0xc
+	mul r2, r1, r0
+	ldr r0, _020C9FE8 ; =OSi_IrqCallbackInfo
+	ldr r0, [r0, r2]
+	bx lr
+_020C9F98:
+	cmp r3, #0x3
+	blt _020C9FC0
+	cmp r3, #0x6
+	bgt _020C9FC0
+	add r1, r3, #0x1
+	mov r0, #0xc
+	mul r2, r1, r0
+	ldr r0, _020C9FE8 ; =OSi_IrqCallbackInfo
+	ldr r0, [r0, r2]
+	bx lr
+_020C9FC0:
+	ldr r0, [r2, #0x0]
+	bx lr
+_020C9FC8:
+	add r3, r3, #0x1
+	cmp r3, #0x16
+	mov r0, r0, lsr #0x1
+	add r2, r2, #0x4
+	blt _020C9F68
+	mov r0, #0x0
+	bx lr
+	.balign 4
+_020C9FE4: .word 0x027E0000
+_020C9FE8: .word OSi_IrqCallbackInfo
+
+	arm_func_start OS_SetIrqFunction
+OS_SetIrqFunction: ; 0x020C9FEC
+	stmdb sp!, {r4-r8,lr}
+	mov r8, #0x0
+	ldr lr, _020CA074 ; =0x027E0000
+	ldr r5, _020CA078 ; =OSi_IrqCallbackInfo
+	mov r6, r8
+	mov r12, r8
+	mov r3, #0x1
+	mov r2, #0xc
+_020CA00C:
+	ands r4, r0, #0x1
+	beq _020CA05C
+	mov r7, r6
+	cmp r8, #0x8
+	blt _020CA030
+	cmp r8, #0xb
+	suble r4, r8, #0x8
+	mlale r7, r4, r2, r5
+	ble _020CA04C
+_020CA030:
+	cmp r8, #0x3
+	blt _020CA048
+	cmp r8, #0x6
+	addle r4, r8, #0x1
+	mlale r7, r4, r2, r5
+	ble _020CA04C
+_020CA048:
+	str r1, [lr, r8, lsl #0x2]
+_020CA04C:
+	cmp r7, #0x0
+	strne r1, [r7, #0x0]
+	strne r12, [r7, #0x8]
+	strne r3, [r7, #0x4]
+_020CA05C:
+	add r8, r8, #0x1
+	cmp r8, #0x16
+	mov r0, r0, lsr #0x1
+	blt _020CA00C
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+	.balign 4
+_020CA074: .word 0x027E0000
+_020CA078: .word OSi_IrqCallbackInfo
+
+	arm_func_start OS_InitIrqTable
+OS_InitIrqTable: ; 0x020CA07C
+	ldr r0, _020CA090 ; =0x027E0060
+	mov r1, #0x0
+	str r1, [r0, #0x4]
+	str r1, [r0, #0x0]
+	bx lr
+	.balign 4
+_020CA090: .word 0x027E0060