Run-Time Environments How do we allocate the space for the generated target code and the data object of our source programs? The places of the data objects that can be determined at compile time will be allocated statically. But the places for the some of data objects will be allocated at run-time. The allocation of de-allocation of the data objects is managed by the run-time support package. run-time support package is loaded together with the generate target code. the structure of the run-time support package depends on the semantics of the programming language (especially the semantics of procedures in that language). Each execution of a procedure is called as activation of that procedure. CS308 Compiler Theory 2Run-Time Environments • How do we allocate the space for the generated target code and the data obj f ect o f our source programs? • The places of the data objects that can be determined at compile time will be all t d t ti ll lloca t e d s t atically. • But the places for the some of data objects will be allocated at run-time. • Th ll ti f d The allocation o f de-all ti f th d t bj t i d b th llocation o f the d a ta objec ts is manage d by the run-time support package. – run -time support package is loaded together with the generate target code time support package is loaded together with the generate target code. – the structure of the run-time support package depends on the semantics of the programming language (especially the semantics of procedures in that language). • E h i f d i ll d Eac h execut ion o f a proce dure is call e d as activation ofh d t at proce dure. CS308 Compiler Theory 2