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From: kenton@abyss.zk3.dec.com (Jeff Kenton OSG/UEG)
Newsgroups: comp.sys.mips
Subject: Re: changing crt0.o
Message-ID: <1991Apr1.175617.4393@decvax.dec.com>
Date: 1 Apr 91 17:56:17 GMT
References: <7991@rossignol.Princeton.EDU>
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Reply-To: kenton@abyss.zk3.dec.com (Jeff Kenton OSG/UEG)
Organization: Digital Equipment Corporation - Nashua, NH
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In article <7991@rossignol.Princeton.EDU>, nr@dynamic.Princeton.EDU
(Norman Ramsey) writes:
|> 
|> I want to change crt0.o to initialize some debugging code before
|> calling the user's main().  I've looked at the existing __start using
|> dbx, and I've duplicated the instruction sequence, but when I try `nm
|> /usr/lib/crt0.o' I still see some things I don't understand.  (For
|> example, how much of the moncontrol stuff is necessary?) We have
|> Ultrix sources but our sysadmin people have been unable to find crt0.s
|> for me.  Can anyone point me to a copy of crt0.s for the MIPS, or tell
|> me what manual explains what this code is supposed to do?
|> 

If you have source for the library stuff, look there for crt0.s.  The
moncontrol
stuff is for profiling.  In the non-profiling version, stubs are compiled in,
in case you link to a routine that was compiled with profiling.  The stubs are
tiny -- no harm putting them in.

-----------------------------------------------------------------------------
==	jeff kenton		Consulting at kenton@decvax.dec.com        ==
==                                 -- No I don't speak for DEC --          ==
==	(617) 894-4508			(603) 881-0011			   ==
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