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From: anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups: comp.arch
Subject: Re: stack sizes, Segments
Date: Thu, 23 Jan 2025 07:24:12 GMT
Organization: Institut fuer Computersprachen, Technische Universitaet Wien
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scott@slp53.sl.home (Scott Lurndal) writes:
>What would an application (portable or otherwise) use the process
>stack base address for?

Finding roots for garbage collection.

>The data is available through the /proc/ filesystem.
>
>$ cat /proc/$$/maps | grep "[stack]"
>
>7fff77b52000-7fff77b73000 rw-p 00000000 00:00 0                          [stack]

That's Linux (I just tried it on AIX 7.3.3; there is no
/proc/$$/maps).  For the kind of application under discussion Linux
also has /proc/self/maps, so you don't need to getpid() and convert it
to decimal, but in the example that would produce the maps of the
"cat" process, not that of the surrounding shell.

I would use "grep -F", because grep by default searches for regexp and
'[' and ']' are regexp meta-characters.

- anton
-- 
'Anyone trying for "industrial quality" ISA should avoid undefined behavior.'
  Mitch Alsup, <c17fcd89-f024-40e7-a594-88a85ac10d20o@googlegroups.com>