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1.2 Interfaces

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Figure 1-1 Procedure Call Convention Architected Interfaces

[Figure 1-1]

Figure 1-1 shows the units involved in a procedure call, and the critical interfaces (numbered) that will be discussed throughout this document, and their definitions follow:

Caller:The calling code, origin of the call.
Callee:The called code, object of the call.
Call:The transfer of program control to the callee (1).
Entry:The point of entry into the callee (2).
Exit:The point of exit from the callee (3).
Return:The point of return of program control to the caller (4).



1.1 Types of Procedure Calls

Chapter 2 Stack Usage