Basic HTML version of Foils prepared August 7 98

Foil 35 D. Subroutine linkage
Data Mapping in Subroutine Calls

From DoD HPF Training -- 4. HPF Data Mapping Facilities DoD Training and Others -- 1995-98. by Chuck Koelbel -- Rice University
Some subroutines require data to use a specific mapping, so actual arguments must be remapped
Some subroutines can use any mapping, so actual arguments should be passed in place
Sometimes the programmer knows the incoming data mappings, sometimes not
HPF has options to say all of this!
Any remappings are undone on procedure return

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