LOOP: SUBIS X1, X1, #0 B.LE DONE SUBI X1, X1, #1 ADDI XO, XO, #2 B LOOP DONE:

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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LOOP: SUBIS X1, X1, #0
B.LE DONE
SUBI X1, X1, #1
ADDI XO, XO, #2
B LOOP
DONE:
Where SUBIS means: Subtract and set flags
Immediate.
- Assume that the register X1 is initialized to the
value 10. What is the final value in register XO
assuming the XO is initially zero?
- For the loop above, write the equivalent C
code. Assume that the registers X0, and X1 are
integers j and i respectively.
- For the loop written in LEGV8 assembly above,
assume that the register X1 is initialized to the
value N. How many LEGV8 instructions are
executed?
- For the loop written in LEGV8 assembly above,
replace the instruction "B.LE DONE" with "B.MI
DONE". What is the final value in register X0
assuming the XO is initially zero?
Note B.MI = Branch on minus.
- For the loop written in LEGV8 assembly above,
replace the instruction " B.LE DONE "
11
instruction with " B.MI DONE " and write
equivalent C code.
Transcribed Image Text:LOOP: SUBIS X1, X1, #0 B.LE DONE SUBI X1, X1, #1 ADDI XO, XO, #2 B LOOP DONE: Where SUBIS means: Subtract and set flags Immediate. - Assume that the register X1 is initialized to the value 10. What is the final value in register XO assuming the XO is initially zero? - For the loop above, write the equivalent C code. Assume that the registers X0, and X1 are integers j and i respectively. - For the loop written in LEGV8 assembly above, assume that the register X1 is initialized to the value N. How many LEGV8 instructions are executed? - For the loop written in LEGV8 assembly above, replace the instruction "B.LE DONE" with "B.MI DONE". What is the final value in register X0 assuming the XO is initially zero? Note B.MI = Branch on minus. - For the loop written in LEGV8 assembly above, replace the instruction " B.LE DONE " 11 instruction with " B.MI DONE " and write equivalent C code.
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