EXCRETORY SYSTEM
CORTEX
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a subroutine is called, the return address is hold in which register?
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Stack Pointer
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Interrupt register
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Program Counter
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Link register
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Explanation:
Detailed explanation-1: -R14 is also called the Link Register (LR). This is used for holding the return address when calling a function or subroutine.
Detailed explanation-2: -The RETURN instruction returns control from a subroutine back to the calling program and optionally returns a value. When calling an internal subroutine, CALL passes control to a label specified after the CALL keyword.
Detailed explanation-3: -A subroutine is a block of code that performs a task based on some arguments and optionally returns a result. By convention, you use registers R0 to R3 to pass arguments to subroutines, and R0 to pass a result back to the callers.
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