From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <299507dd57a667108bf5d8986778b430@felloff.net>
Date: Sat, 19 Jul 2014 04:27:00 +0200
From: cinap_lenrek@felloff.net
To: 9fans@9fans.net
In-Reply-To: <3e0dba73883c8b291a66366c9ebe150d@ladd.quanstro.net>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: Re: [9fans] extern register
Topicbox-Message-UUID: 062d36a0-ead9-11e9-9d60-3106f5b1d025

so, we say r14 and r15 arent really special for user programs. and its
just a c compiler implementation detail that it doesnt allocate these
registers, but assembly code can freely use them for scratch space
or whatever. extern register will not work in userspace c programs
because syscalls will trash these registers.

makes any sense?

--
cinap