Explain different pseudo opcode used for conditional macro expansion, along with example
Answers
Answer:
Explain different pseudo-ops used for conditional macro expansion along an example. In an assembly language program there can be group of instructions that may be repeated again and again. MACRO is defined as a single line abbreviation for a group of instruction.
Macro processors can be used with high-level programming languages, operating system command languages, and so on. Pseudo op is an abbreviation for "pseudo operation" and is also known as "assembler directive."
What are different pseudo opcodes used for conditional macro expansion?
This is the mechanism that allows a single version of source code for a program to be used to generate multiple executable versions. AIF and AGO statements can be used to achieve conditional assembly or macro expansion.
AIF:
It Specifies the branching condition. If the condition is true, the statement is executed; otherwise, it moves on to the next step.
Syntax :
AIF (condition) Label
AGO:
To specify unconditional branch facility, use this syntax. The condition is not specified.
Syntax:
AGO. Label
As a result, AIF and AGO statements are microprocessor pseudo–OPS statements that are used for conditional macro expansion.
#SPJ3