Data Nullifying

Data Nullifying (requires r5 = Limit, and r4 = Starting location)
0005e644: 27bdfff8 addiu r29,r29,0xfff8
0005e648: 18a00006 blez r5,0x0005e664		Branch if r5 <= 0
0005e64c: 00001821 addu r3,r0,r0		r3 = 0
0005e650: a0800000 sb r0,0x0000(r4)		X Value = 0
0005e654: 24630001 addiu r3,r3,0x0001		r3 += 1 (Counter ++)
0005e658: 0065102a slt r2,r3,r5
0005e65c: 1440fffc bne r2,r0,0x0005e650		Branch if counter isn't at   limit
0005e660: 24840001 addiu r4,r4,0x0001		Data to null + 1
0005e664: 27bd0008 addiu r29,r29,0x0008
0005e668: 03e00008 jr r31
0005e66c: 00000000 nop