In <[EMAIL PROTECTED]>, on 04/13/2006
   at 06:46 AM, Charles Mills <[EMAIL PROTECTED]> said:

>Load modules contain pretty much the same information as object
>modules, optimized for quick loading into memory rather than
>optimized for the 1968 link editor <g>.

The format of the object module was constrained by the 80-column limit
of the punched cards used by IBM, rather than being optimized for the
linkage editor. That format goes back well before 1968.

>You can also see machine instructions in hex in load modules, but
>which records are which escapes me at the moment.

Text records. They contain nothing but a storage image; no prefix, not
type, no load address, no relocation information. All of those
metadata are in the directory entry and in records immediately
preceeding or following the text record. I don't know what the
equivalent is for program objects.
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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