mw@shell:~$ cat test.S
_start:
	xor r0, r0, r0
	mvhi r1, hi(0x40000000)
	ori r1, r1, lo(0x40000000)
	mvhi r2, hi(0x40000000)
	ori r2, r2, lo(0x40000000)
	mvi r3, 4

	wcsr TLBVADDR, r1
	wcsr TLBPADDR, r2
	wcsr TLBCTRL, r3

	mvi r8, 16
	wcsr PSW, r8

	mvhi r1, hi(0x50000000)
	ori r1, r1, lo(0x50000000)
	mvhi r2, hi(0x40000000)
	ori r2, r2, lo(0x40000000)
	mvi r3, 4

	wcsr TLBVADDR, r1
	wcsr TLBPADDR, r2
	wcsr TLBCTRL, r3

	mvhi r5, hi(.loop)
	orhi r5, r5, 0x1000
	ori r5, r5, lo(.loop)

	b r5

.loop:
	bi .loop