Programming
February 1, 2024Question 3712 – UGC NET CS 2015 Dec- paper-2
February 2, 2024Compiler-Design
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Question 21
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The pass number for each of the following activities
- 1. Object code generation
2. Literals added to literal table
3. Listing printed
4. Address resolution of local symbols
That occur in a two pass assembler respectively are
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1, 2, 1, 2
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2, 1, 2, 1
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2, 1, 1, 2
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1, 2, 2, 2
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Question 21 Explanation:
The functionalities from pass 1 and pass 2 are:
Pass 1:
1) Assign addresses to all statements in the program.
2) Save the values assigned to all labels for use in pass 2.
3) Perform some processing of assembler directives.
Pass 1:
1) Assign addresses to all statements in the program.
2) Save the values assigned to all labels for use in pass 2.
3) Perform some processing of assembler directives.
Pass 2:
1) Assemble instructions.
2) Generate data values defined by BYTE, WORD etc.
3) Perform processing of assembler directives not done during pass 1.
4) Write the program and assembling listing.
Correct Answer: B
Question 21 Explanation:
The functionalities from pass 1 and pass 2 are:
Pass 1:
1) Assign addresses to all statements in the program.
2) Save the values assigned to all labels for use in pass 2.
3) Perform some processing of assembler directives.
Pass 1:
1) Assign addresses to all statements in the program.
2) Save the values assigned to all labels for use in pass 2.
3) Perform some processing of assembler directives.
Pass 2:
1) Assemble instructions.
2) Generate data values defined by BYTE, WORD etc.
3) Perform processing of assembler directives not done during pass 1.
4) Write the program and assembling listing.
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