Lines Matching refs:a0
58 PTR_SUBU a3, zero, a0 # compute # bytes to word align address
62 REG_SHI zero, 0(a0) # clear 1, 2, or 3 bytes to align
63 PTR_ADDU a0, a0, a3
68 PTR_ADDU a3, a3, a0 # compute ending address
70 PTR_ADDU a0, a0, SZREG # clear words
71 bne a0, a3, 2b # unrolling loop doesnt help
72 REG_S zero, -SZREG(a0) # since we are limited by memory speed
75 PTR_ADDU a3, a1, a0 # compute ending address
77 PTR_ADDU a0, a0, 1 # clear bytes
78 bne a0, a3, 1b
79 sb zero, -1(a0)