PowerPC GTA

Compute_XOR:
li      %r11, 0         # Load Immediate
cmplwi  cr6, %r4, 0     # Compare Logical Word Immediate
beq     cr6, loc_823140D4 # Branch if equal

mtctr   %r4             # Move to count register

[Loop]
loc_823140B0:           # Load Byte and Zero Indexed
lbzx    %r10, %r11, %r3
addi    %r11, %r11, 1   # Add Immediate
extsb   %r10, %r10      # Extend Sign Byte
add     %r10, %r10, %r5 # Add
slwi    %r9, %r10, 10   # Shift Left Immediate
add     %r10, %r9, %r10 # Add
srwi    %r9, %r10, 6    # Shift Right Immediate
xor     %r5, %r9, %r10  # XOR
bdnz    loc_823140B0    # CTR--; branch if CTR non-zero

[End]
loc_823140D4:           # Shift Left Immediate
slwi    %r11, %r5, 3
add     %r11, %r5, %r11 # Add
srwi    %r10, %r11, 11  # Shift Right Immediate
xor     %r11, %r10, %r11 # XOR
slwi    %r10, %r11, 15  # Shift Left Immediate
add     %r3, %r10, %r11 # Add
blr                     # Branch unconditionally
# End of function Compute_XOR