Jump Instruction: The “jump” instruction causes execution to switch to an entirely new position in program. The “label” indicates jump destinations in assembly code. The “je” instruction denotes “jump if equal” or “jump if zero”. The comparison operation is performed. If result of comparison is either equal or zero, then jump operation takes place. The “ja” instruction denotes “jump if above”. The comparison operation is performed. If result of comparison is greater, then jump operation takes place. The “pop” instruction resumes execution of jump instruction. The “jmpq” instruction jumps to given address. It denotes a direct jump.

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Answer 1

Question

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

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c. (3 Pts) In a certain computer architecture, the content of some registers and memory content currently is as follows. Memory Address Data R1 | 00000004 0000FFFE FO00128A R2 0000FFFE FO00128A 0000FFF0 Next, this computer execute the following instruction. ADDI (0000FFFE), R1 Note: The I in ADDI refers to Indirect. Indirect here deals with the destination address: (0000FFFE). The parentheses are standard for indirect addressing. ADDI means add content of source to content of destination and place result in destination. Given that it is immediately after the instruction above is executed, fill out the contents of registers and memory addresses below. Memory Address Data R1 0000FFFE R2 FO00128A

(b) For the following C statement, write the corresponding LEGV8 assembly code. Assume that the variables f, g, h, i, and j are assigned to registers X0.X1,X2,X3, and X4, respectively. Assume that the base address of the arrays A and B are in registers X6 and X7, respectively. B[3] = A[il + Alil:

(Amdahl’s law question) Suppose you have a machine which executes a programconsisting of 50% floating point multiply, 20% floating point divide, and the remaining 30% are fromother instructions.(a) Management wants the machine to run 4 times faster. You can make the divide run at most 3 timesfaster and the multiply run at most 8 times faster. Can you meet management’s goal by making onlyone improvement, and which one?

Answer 2

Question

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

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Answer 3

Question

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

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Answer 4

Question

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

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Answer 5

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 6

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 7

Chapter 3.6, Problem 3.15PP

a.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 8

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 9

b.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 10

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 11

c.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 12

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 13

d.

Program Plan Intro

Jump Instruction:

The “jump” instruction causes execution to switch to an entirely new position in program.

The “label” indicates jump destinations in assembly code.

The “je” instruction denotes “jump if equal” or “jump if zero”.

The comparison operation is performed.

If result of comparison is either equal or zero, then jump operation takes place.

The “ja” instruction denotes “jump if above”.

The comparison operation is performed.

If result of comparison is greater, then jump operation takes place.

The “pop” instruction resumes execution of jump instruction.

The “jmpq” instruction jumps to given address. It denotes a direct jump.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 3.4 - Prob. 3.1PP Ch. 3.4 - Prob. 3.2PP Ch. 3.4 - Prob. 3.3PP Ch. 3.4 - Prob. 3.4PP Ch. 3.4 - Prob. 3.5PP Ch. 3.5 - Prob. 3.6PP Ch. 3.5 - Prob. 3.7PP Ch. 3.5 - Prob. 3.8PP Ch. 3.5 - Prob. 3.9PP Ch. 3.5 - Prob. 3.10PP

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Chapter 3 Solutions