pokeemerald/asm/crt0.s

	.include "asm/rom_header.s"

_080000C0:
	.4byte 0

_080000C4:
	.2byte 0

_080000C6:
	.2byte 0

_080000C8:
	.4byte 0

	.incbin "base_emerald.gba", 0xCC, 0x204 - 0xCC

	arm_func_start Init
Init:
	mov r0, PSR_IRQ_MODE
	msr cpsr_cf, r0
	ldr sp, sp_irq
	mov r0, PSR_SYS_MODE
	msr cpsr_cf, r0
	ldr sp, sp_sys
	ldr r1, =INTR_VECTOR
	adr r0, InterruptMain
	str r0, [r1]
	ldr r1, =Main + 1
	mov lr, pc
	bx r1
	b Init

	.align 2, 0
sp_sys: .4byte IWRAM_END - 0x1c0
sp_irq: .4byte IWRAM_END - 0x60

	.pool

	arm_func_end Init

	arm_func_start InterruptMain
InterruptMain:
	mov r3, REG_BASE
	add r3, r3, 0x200
	ldr r2, [r3, OFFSET_REG_IE - 0x200]
	ldrh r1, [r3, OFFSET_REG_IME - 0x200]
	mrs r0, spsr
	stmdb sp!, {r0-r3,lr}
	mov r0, 0
	strh r0, [r3, OFFSET_REG_IME - 0x200]
	and r1, r2, r2, lsr 16
	mov r12, 0
	ands r0, r1, INTR_FLAG_VCOUNT
	bne @foundInterrupt
	add r12, r12, 0x4
	mov r0, 0x1
	strh r0, [r3, OFFSET_REG_IME - 0x200]
	ands r0, r1, INTR_FLAG_SERIAL
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_TIMER3
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_HBLANK
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_VBLANK
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_TIMER0
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_TIMER1
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_TIMER2
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_DMA0
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_DMA1
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_DMA2
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_DMA3
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_KEYPAD
	bne @foundInterrupt
	add r12, r12, 0x4
	ands r0, r1, INTR_FLAG_GAMEPAK
	strbne r0, [r3, OFFSET_REG_SOUNDCNT_X - 0x200]
@loop:
	bne @loop
@foundInterrupt:
	strh r0, [r3, OFFSET_REG_IF - 0x200]
	bic r2, r2, r0
	ldr r0, =0x03007868
	ldr r0, [r0]
	ldrb r0, [r0, 0xA]
	mov r1, 0x8
	mov r0, r1, lsl r0
	orr r0, r0, INTR_FLAG_GAMEPAK
	orr r1, r0, INTR_FLAG_SERIAL | INTR_FLAG_TIMER3 | INTR_FLAG_VCOUNT | INTR_FLAG_HBLANK
	and r1, r1, r2
	strh r1, [r3, OFFSET_REG_IE - 0x200]
	mrs r3, cpsr
	bic r3, r3, PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK
	orr r3, r3, PSR_SYS_MODE
	msr cpsr_cf, r3
	ldr r1, =0x03002710
	add r1, r1, r12
	ldr r0, [r1]
	stmdb sp!, {lr}
	add lr, pc, 0
	bx r0
	ldmia sp!, {lr}
	mrs r3, cpsr
	bic r3, r3, PSR_I_BIT | PSR_F_BIT | PSR_MODE_MASK
	orr r3, r3, PSR_I_BIT | PSR_IRQ_MODE
	msr cpsr_cf, r3
	ldmia sp!, {r0-r3,lr}
	strh r2, [r3, OFFSET_REG_IE - 0x200]
	strh r1, [r3, OFFSET_REG_IME - 0x200]
	msr spsr_cf, r0
	bx lr

	.pool

	arm_func_end InterruptMain
make includes relative to the base dir 2015-10-08 11:03:14 +02:00			`.include "asm/rom_header.s"`
split out files and add build batch file 2015-10-05 15:03:59 +02:00
			`_080000C0:`
use .4byte and .2byte everywhere 2015-10-10 17:37:51 +02:00			`.4byte 0`
split out files and add build batch file 2015-10-05 15:03:59 +02:00
			`_080000C4:`
use .4byte and .2byte everywhere 2015-10-10 17:37:51 +02:00			`.2byte 0`
split out files and add build batch file 2015-10-05 15:03:59 +02:00
			`_080000C6:`
use .4byte and .2byte everywhere 2015-10-10 17:37:51 +02:00			`.2byte 0`
split out files and add build batch file 2015-10-05 15:03:59 +02:00
			`_080000C8:`
use .4byte and .2byte everywhere 2015-10-10 17:37:51 +02:00			`.4byte 0`
split out files and add build batch file 2015-10-05 15:03:59 +02:00
			`.incbin "base_emerald.gba", 0xCC, 0x204 - 0xCC`

			`arm_func_start Init`
			`Init:`
			`mov r0, PSR_IRQ_MODE`
			`msr cpsr_cf, r0`
			`ldr sp, sp_irq`
			`mov r0, PSR_SYS_MODE`
			`msr cpsr_cf, r0`
			`ldr sp, sp_sys`
			`ldr r1, =INTR_VECTOR`
			`adr r0, InterruptMain`
			`str r0, [r1]`
			`ldr r1, =Main + 1`
			`mov lr, pc`
			`bx r1`
			`b Init`

			`.align 2, 0`
			`sp_sys: .4byte IWRAM_END - 0x1c0`
			`sp_irq: .4byte IWRAM_END - 0x60`

			`.pool`

			`arm_func_end Init`

			`arm_func_start InterruptMain`
			`InterruptMain:`
add I/O register constants 2015-10-10 19:06:17 +02:00			`mov r3, REG_BASE`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r3, r3, 0x200`
add I/O register constants 2015-10-10 19:06:17 +02:00			`ldr r2, [r3, OFFSET_REG_IE - 0x200]`
			`ldrh r1, [r3, OFFSET_REG_IME - 0x200]`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`mrs r0, spsr`
			`stmdb sp!, {r0-r3,lr}`
			`mov r0, 0`
add I/O register constants 2015-10-10 19:06:17 +02:00			`strh r0, [r3, OFFSET_REG_IME - 0x200]`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`and r1, r2, r2, lsr 16`
			`mov r12, 0`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_VCOUNT`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
			`mov r0, 0x1`
add I/O register constants 2015-10-10 19:06:17 +02:00			`strh r0, [r3, OFFSET_REG_IME - 0x200]`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_SERIAL`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_TIMER3`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_HBLANK`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_VBLANK`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_TIMER0`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_TIMER1`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_TIMER2`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_DMA0`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_DMA1`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_DMA2`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_DMA3`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_KEYPAD`
add I/O register constants 2015-10-10 19:06:17 +02:00			`bne @foundInterrupt`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`add r12, r12, 0x4`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`ands r0, r1, INTR_FLAG_GAMEPAK`
add I/O register constants 2015-10-10 19:06:17 +02:00			`strbne r0, [r3, OFFSET_REG_SOUNDCNT_X - 0x200]`
			`@loop:`
			`bne @loop`
			`@foundInterrupt:`
			`strh r0, [r3, OFFSET_REG_IF - 0x200]`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`bic r2, r2, r0`
			`ldr r0, =0x03007868`
			`ldr r0, [r0]`
			`ldrb r0, [r0, 0xA]`
			`mov r1, 0x8`
			`mov r0, r1, lsl r0`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`orr r0, r0, INTR_FLAG_GAMEPAK`
			`orr r1, r0, INTR_FLAG_SERIAL \| INTR_FLAG_TIMER3 \| INTR_FLAG_VCOUNT \| INTR_FLAG_HBLANK`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`and r1, r1, r2`
add I/O register constants 2015-10-10 19:06:17 +02:00			`strh r1, [r3, OFFSET_REG_IE - 0x200]`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`mrs r3, cpsr`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`bic r3, r3, PSR_I_BIT \| PSR_F_BIT \| PSR_MODE_MASK`
			`orr r3, r3, PSR_SYS_MODE`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`msr cpsr_cf, r3`
			`ldr r1, =0x03002710`
			`add r1, r1, r12`
			`ldr r0, [r1]`
			`stmdb sp!, {lr}`
			`add lr, pc, 0`
			`bx r0`
			`ldmia sp!, {lr}`
			`mrs r3, cpsr`
use more constants in InterruptMain 2015-10-05 15:53:39 +02:00			`bic r3, r3, PSR_I_BIT \| PSR_F_BIT \| PSR_MODE_MASK`
			`orr r3, r3, PSR_I_BIT \| PSR_IRQ_MODE`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`msr cpsr_cf, r3`
			`ldmia sp!, {r0-r3,lr}`
add I/O register constants 2015-10-10 19:06:17 +02:00			`strh r2, [r3, OFFSET_REG_IE - 0x200]`
			`strh r1, [r3, OFFSET_REG_IME - 0x200]`
split out files and add build batch file 2015-10-05 15:03:59 +02:00			`msr spsr_cf, r0`
			`bx lr`

			`.pool`

			`arm_func_end InterruptMain`