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From: krowitz@RICHTER.MIT.EDU (David Krowitz)
Newsgroups: comp.sys.apollo
Subject: Re:  Inlib'ing on SR10.1/2
Message-ID: <9009071335.AA12934@richter.mit.edu>
Date: 7 Sep 90 13:35:41 GMT
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Organization: The Internet
Lines: 18

By default, the SR10 compilers produce "absolute code" (memory references
that are to variables that are not on the stack are made to a fixed location
rather than to a location relative to the program counter; and jump/branch
instructions are made to fixed locations rather than relative to the
program counter). You can produce position independent code by using
the Apollo specific switch "-pic" when compiling your code. This is
required for all code which is loadable at run time (ie. inlib libraries,
device drivers, IOS type managers, etc). SR9.7 compilers always produced
position independent code, which is supposedly slower than absolute code.
We haven't seen any significant speed improvements, however.


 -- David Krowitz

krowitz@richter.mit.edu   (18.83.0.109)
krowitz%richter.mit.edu@eddie.mit.edu
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