From mboxrd@z Thu Jan  1 00:00:00 1970
From: dickg@develcon.com (Dick Ginther)
To: help-gcc@gnu.org
Subject: PowerPC Stack Frames
Date: Fri, 31 Dec 1999 22:24:00 -0000
Message-ID: <82gpv3$bjn@sirius.develcon.com>
X-SW-Source: 1999-12n/msg00085.html
Message-ID: <19991231222400.CEe6mQHhqKtydOgB5G0BeVmoTgPo1Z2P5o4xYOMDWMs@z>

Hi,
	I am using egcs-2.91.66 for a PowerPC.  I would like
some help understanding how registers and the stack are used
on PowerPC with GCC.  I know that R1 is the stack pointer, but
are there other registers reserved for other purposes?
	On an interrupt do I have to save all 32 registers or
are there a sub-set that are usually used.
	Thanks in advance.
-- 
Dick Ginther                   E-mail: dick.ginther@develcon.com
Develcon Electronics Ltd.      Web:    http://www.develcon.com
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