crt0.s

the test file for GP32 gameboy hack

@////////////////////////////////////////////////////////////////////////////@
@/ crt0.S                                                                   /@
@////////////////////////////////////////////////////////////////////////////@

	.TEXT
	.CODE	32
	.ALIGN

	.GLOBAL		_start
_start:
	b	_start2

	@ AXF addresses
_text_start:
	.word	__text_start
_ro_end:
	.word	__ro_end
_data_start:
	.word	__data_start
	.word	__bss_end
_bss_start:
	.word	__bss_start
_bss_end:
	.word	__bss_end

	@ GamePark magic sequence
	.word	0x44450011
	.word	0x44450011
	.word	0x01234567
	.word	0x12345678
	.word	0x23456789
	.word	0x34567890
	.word	0x45678901
	.word	0x56789012
	.word	0x23456789
	.word	0x34567890
	.word	0x45678901
	.word	0x56789012
	.word	0x23456789
	.word	0x34567890
	.word	0x45678901
	.word	0x56789012

_start2:
	mrs		r0, CPSR
	orr		r0, r0, #0xC0
	msr		CPSR_ctl, r0

	mrs		r0, CPSR
	bic		r0, r0, #0xC0
	orr		r0, r0, #0x40
	msr		CPSR_ctl,r0

	mov		lr, #0
	ldr		r3, =main
	bx		r3


	.POOL
	.END