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computers / alt.sys.pdp10 / TOPS-10/20 LINKER and libraries

SubjectAuthor
* TOPS-10/20 LINKER and librariesSid Maxwell
+- Re: TOPS-10/20 LINKER and librariesgah4
`* Re: TOPS-10/20 LINKER and librariesgah4
 `* Re: TOPS-10/20 LINKER and librariesSid Maxwell
  `* Re: TOPS-10/20 LINKER and librariesgah4
   `- Re: TOPS-10/20 LINKER and librariesSid Maxwell

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TOPS-10/20 LINKER and libraries

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Subject: TOPS-10/20 LINKER and libraries
From: srmaxwell3@gmail.com (Sid Maxwell)
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 by: Sid Maxwell - Thu, 6 Jul 2023 17:49 UTC

I want to find out what symbols are external to a TOPS-20 library (i.e. referenced by modules within the library, but not defined within it). If there a way to do this e.g. with some linker command(s)?

-+- Sid

Re: TOPS-10/20 LINKER and libraries

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Subject: Re: TOPS-10/20 LINKER and libraries
From: gah4@u.washington.edu (gah4)
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 by: gah4 - Thu, 6 Jul 2023 23:56 UTC

On Thursday, July 6, 2023 at 10:49:02 AM UTC-7, Sid Maxwell wrote:
> I want to find out what symbols are external to a TOPS-20 library
> (i.e. referenced by modules within the library, but not defined within it).
> If there a way to do this e.g. with some linker command(s)?
It used to be that linkers had a way to display a list of external symbols,
where they are defined, and where they are referenced.

I haven't thought about the TOPS-20 linker for a while, though.

Re: TOPS-10/20 LINKER and libraries

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Subject: Re: TOPS-10/20 LINKER and libraries
From: gah4@u.washington.edu (gah4)
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 by: gah4 - Fri, 7 Jul 2023 00:09 UTC


The LINK-20 manual is here:

https://www.livingcomputers.org/UI/UserDocs/TOPS-20-v7-1/3_LINK_Reference_Manual.pdf

The /MAP option generates a MAP file.

The /CONTENTS option specifies what is, or isn't, in the MAP file.

You then need a way to convince the linker to load your library, or parts of it.

That would be easy to do in most languages, including MACRO-10.
(Slightly nicer in MACRO-10, as you won't have other modules and libraries
included that you didn't expect.)

You could either do it one library entry at a time, with a list of library members,
or all at once.

Re: TOPS-10/20 LINKER and libraries

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Subject: Re: TOPS-10/20 LINKER and libraries
From: srmaxwell3@gmail.com (Sid Maxwell)
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 by: Sid Maxwell - Fri, 7 Jul 2023 14:57 UTC

I discovered that I can 'cheat'. Since I can build the library, I can scan the (generated) .s files, filter them for EXTERN and ENTRY, then find the EXTERNs that aren't also ENTRYs. "And Bob's your uncle." :-)

Re: TOPS-10/20 LINKER and libraries

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Subject: Re: TOPS-10/20 LINKER and libraries
From: gah4@u.washington.edu (gah4)
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 by: gah4 - Fri, 7 Jul 2023 19:56 UTC

On Friday, July 7, 2023 at 7:57:50 AM UTC-7, Sid Maxwell wrote:
> I discovered that I can 'cheat'. Since I can build the library,
>I can scan the (generated) .s files, filter them for EXTERN and ENTRY,
> then find the EXTERNs that aren't also ENTRYs. "And Bob's your uncle." :-)

Pretty easy in AWK probably not so bad in other languages.
Associative arrays make it easy to do.

Re: TOPS-10/20 LINKER and libraries

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Subject: Re: TOPS-10/20 LINKER and libraries
From: srmaxwell3@gmail.com (Sid Maxwell)
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 by: Sid Maxwell - Fri, 7 Jul 2023 20:01 UTC

AWK it is (was, since I've already written it). Probably my 2nd-most used language.

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