2022-01-24 17:52:05 +00:00
|
|
|
.include "asm/constants.inc"
|
|
|
|
|
.include "asm/macros.inc"
|
2022-01-21 18:26:25 +00:00
|
|
|
|
2022-01-30 19:25:59 +00:00
|
|
|
.syntax unified
|
|
|
|
|
|
2023-07-11 14:27:10 +00:00
|
|
|
arm_func_start IntrMain
|
|
|
|
|
IntrMain: @ 0x08000104
|
2022-01-30 19:25:59 +00:00
|
|
|
mov r3, REG_BASE
|
|
|
|
|
add r3, r3, REG_IE_OFFSET
|
2022-01-21 18:26:25 +00:00
|
|
|
ldr r2, [r3]
|
2022-01-30 19:25:59 +00:00
|
|
|
ldrh r1, [r3, (REG_IME_OFFSET - REG_IE_OFFSET)] @ Interrupt Master Enable
|
2022-01-21 18:26:25 +00:00
|
|
|
mrs r0, spsr
|
2022-03-05 13:55:42 +00:00
|
|
|
push {r0-r3, lr}
|
2022-01-30 19:25:59 +00:00
|
|
|
mov r0, 1
|
|
|
|
|
strh r0, [r3, (REG_IME_OFFSET - REG_IE_OFFSET)] @ Interrupt Master Enable
|
|
|
|
|
and r1, r2, r2, lsr 16
|
|
|
|
|
mov ip, 0
|
|
|
|
|
ands r0, r1, INTR_FLAG_GAMEPAK
|
|
|
|
|
strbne r0, [r3, (REG_SOUNDCNT_X_OFFSET - REG_IE_OFFSET)]
|
2022-01-21 18:26:25 +00:00
|
|
|
lbl_08000134:
|
|
|
|
|
bne lbl_08000134
|
2022-01-30 19:25:59 +00:00
|
|
|
mov ip, 0
|
|
|
|
|
ands r0, r1, INTR_FLAG_DMA2
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_SERIAL
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_TIMER3
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_VBLANK
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_HBLANK
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_VCOUNT
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_TIMER0
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_TIMER1
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_TIMER2
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_DMA0
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_DMA1
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_DMA3
|
2022-01-21 18:26:25 +00:00
|
|
|
bne interrupt_found
|
2022-01-30 19:25:59 +00:00
|
|
|
add ip, ip, 4
|
|
|
|
|
ands r0, r1, INTR_FLAG_KEYPAD
|
2022-01-21 18:26:25 +00:00
|
|
|
interrupt_found:
|
2022-01-30 19:25:59 +00:00
|
|
|
strh r0, [r3, (REG_IF_OFFSET - REG_IE_OFFSET)]
|
2022-01-21 18:26:25 +00:00
|
|
|
ldr r1, lbl_08000234
|
|
|
|
|
bic r2, r2, r0
|
|
|
|
|
and r1, r1, r2
|
|
|
|
|
strh r1, [r3]
|
|
|
|
|
mrs r3, apsr
|
2022-01-30 19:25:59 +00:00
|
|
|
bic r3, r3, (PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK)
|
|
|
|
|
orr r3, r3, PSR_SYS_MODE
|
2022-01-21 18:26:25 +00:00
|
|
|
msr cpsr_fc, r3
|
|
|
|
|
ldr r1, lbl_08000238
|
|
|
|
|
add r1, r1, ip
|
|
|
|
|
ldr r0, [r1]
|
|
|
|
|
stmdb sp!, {lr}
|
2022-01-30 19:25:59 +00:00
|
|
|
add lr, pc, 0x0 @ lbl_0800020C
|
2022-01-21 18:26:25 +00:00
|
|
|
bx r0
|
|
|
|
|
lbl_0800020C:
|
2022-03-05 13:55:42 +00:00
|
|
|
ldmfd sp!, {lr}
|
|
|
|
|
mrs r3, cpsr_fc
|
|
|
|
|
bic r3, r3, (PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK)
|
|
|
|
|
orr r3, r3, (PSR_I_BIT | PSR_IRQ_MODE)
|
|
|
|
|
msr cpsr_fc, r3
|
|
|
|
|
pop {r0-r3, lr}
|
|
|
|
|
strh r2, [r3]
|
|
|
|
|
strh r1, [r3, (REG_IME_OFFSET - REG_IE_OFFSET)]
|
|
|
|
|
msr spsr_fc, r0
|
|
|
|
|
bx lr
|
2022-01-21 18:26:25 +00:00
|
|
|
|
2022-01-23 22:02:53 +00:00
|
|
|
@ pool
|
2022-01-21 18:26:25 +00:00
|
|
|
lbl_08000234: .4byte 0x000024C0
|
2022-09-08 20:35:29 +00:00
|
|
|
lbl_08000238: .4byte sIntrTable
|
