From: mat_carter AT bio-rad DOT com
Newsgroups: comp.os.msdos.djgpp
Subject: Encoding Pentium RDTSC Instruction
Date: 20 Nov 1996 10:26:37 GMT
Organization: NETCOM Network Operations
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Message-ID: <56umct$hh5@news2.noc.netcom.net>
Reply-To: mat_carter AT bio-rad DOT com
NNTP-Posting-Host: mcarter.uk.bio-rad.com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I'm trying to use the Pentium RDTSC instruction to time my code, but the GNU 
assembler (AS.EXE) tells me it's an unknown 386 instruction.  I always compile
via GCC using the -m486 option but if I use -m586 it chucks an error.

Do I need a patch or the latest release of DJGPP (preferably not all of it - again)
or can someone tell me how to code up the instruction so that it can be passed
thru to AS.EXE via inline asm or an x.S file - I guess in binary format?