© 1980 by British Computer Society
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Procedure calling and structured architecture
1 Computer Science Division, Applied Mathematics Department, University of the Witwatersrand, Johannesburg, South Africa, 2 Computer Studies Group, Mathematics Faculty, The University, Southampton, UK
The maintenance of a block structured environment is discussed in the context of structured architectures. Four methods of calling procedures are presented in an updated and uniform notation which makes full use of a stack. Implementations of three of these, namely static and dynamic chaining (on the ICL1900), a full hardware display (on the Burroughs B6700) and a selective local display (on the ICL2900), are compared and it is shown that the ICL2900 does not compensate adequately for the lack of a display. A means of improving static linking on the ICL2900 is therefore suggested. Throughout, the problems likely to be encountered by compiler writers in realising these methods with and without displays and stacks are taken into account and solutions explained.
Received October 1978.
* Computer Science Division, Applied Mathematics Department, University of the Witwatersrand, Johannesburg 2001, South Africa.
Computer Studies Group, Mathematics Faculty, The University, Southampton SO9 5NH.