Question: Explain what this fragment of code does instruction by instruction and what purpose it achieves ( assuming that register r0 is the register of interest).

Explain what this fragment of code does instruction by instruction and what purpose it achieves ( assuming that register r0 is the register of interest). Note that the data in r0 must not be 0 on entry.

loop MOV MOVS ADDCC BCC rl, #0 ro, ro, LSL #1 rl, rl, #1 loop

loop MOV MOVS ADDCC BCC rl, #0 ro, ro, LSL #1 rl, r1, #1 loop

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This code forms a loop with the MOVS r0r0 LSL 1 instruction This instruction shifts the value in r0 ... View full answer

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