Chapter 3.6, Problem 3.14PP

a.

Program Plan Intro

Test and set Instruction:

• The “TEST” instruction works same as “AND” instruction except that condition codes are been set without destination alteration.
• Either same operand is been repeated or one operands denotes mask that indicates which bits should be tested.
• The “testq” instruction performs test on quad word.
• The condition codes can be used by setting a single byte to 0 or 1 based on condition codes combination.
• The “SET” instruction has destination as either one of single byte register that has low order elements or a memory location that is single byte.
• The “setge” instruction denotes a set condition of “Greater than or equal to”.

b.

Program Plan Intro

Test and set Instruction:

• The “TEST” instruction works same as “AND” instruction except that condition codes are been set without destination alteration.
• Either same operand is been repeated or one operands denotes mask that indicates which bits should be tested.
• The “testw” instruction performs test on word.
• The condition codes can be used by setting a single byte to 0 or 1 based on condition codes combination.
• The “SET” instruction has destination as either one of single byte register that has low order elements or a memory location that is single byte.
• The “sete” instruction denotes a set condition of “equal to”.

c.

Program Plan Intro

Test and set Instruction:

• The “TEST” instruction works same as “AND” instruction except that condition codes are been set without destination alteration.
• Either same operand is been repeated or one operands denotes mask that indicates which bits should be tested.
• The “testb” instruction performs test on byte.
• The ordering relations between operands could be determined using other flags.
• The condition codes can be used by setting a single byte to 0 or 1 based on condition codes combination.
• The “SET” instruction has destination as either one of single byte register that has low order elements or a memory location that is single byte.
• The “seta” instruction denotes a set condition of “unsigned above or greater than”.

d.

Program Plan Intro

Test and set Instruction:

• The “TEST” instruction works same as “AND” instruction except that condition codes are been set without destination alteration.
• Either same operand is been repeated or one operands denotes mask that indicates which bits should be tested.
• The “testl” instruction performs test on double word.
• The ordering relations between operands could be determined using other flags.
• The condition codes can be used by setting a single byte to 0 or 1 based on condition codes combination.
• The “SET” instruction has destination as either one of single byte register that has low order elements or a memory location that is single byte.
• The “setle” instruction denotes a set condition of signed “less than or equal to”.