This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
ARM: use of r10 register
- To: egcs-bugs at cygnus dot com
- Subject: ARM: use of r10 register
- From: Luke Diamand <lgd at virata dot com>
- Date: Tue, 17 Nov 1998 17:29:17 +0000
- Reply-To: Luke Diamand <lgd at virata dot com>
Hi!
I noticed in config/arm.h that it says:
/* Register allocation in ARM Procedure Call Standard (as used on
RISCiX):
(S - saved over call).
......
r10 F S (sl) stack limit (not currently used)
It then goes on to list the registers that have pervasive uses:
#define FIXED_REGISTERS \
{ \
0,0,0,0,0,0,0,0, \
0,0,1,1,0,1,0,1, \
0,0,0,0,0,0,0,0, \
1,1,1 \
}
As far as I can tell, this means that r10 won't be used. looking in the
assembler generated, r10 does not seem to be used, but I haven't asked
for stack limit checking. What am I missing? How do I get r10 to be
used?
TIA!
Luke Diamand
--
Virata http://www.virata.com
Cambridge
Tel: +44 1223 566919 Fax: +44 1223 566915