[openrisc] Newbie, OpenRISC, Or1ksim and Linux

[Lee Begg <llnz@paradise.net.nz>]

Hi.

My name is Lee Begg, I'm a second year Computer Science student at Canterbury 
University, New Zealand and do a bit of Open Source Software development in 
my spare time.

I had been thinking about computer architectures and writing an operating 
system for some time.  But I desided that writing an OS from scratch, 
although interesting, would take too long (probably 3 - 5 years).

When I was first kicking around ideas for my operating system, a friend 
suggested that I should write it for an Open Source Hardware project.  After 
5 months, I arrived at Opencores.

So I had a look at OpenRISC and thought it looked cool, so I checked out the 
binutils, newlib and gcc from the cvs and built them.  No problem.  Checked 
out or1ksim (about 10 minutes ago) and it didn't build.

make[3]: Entering directory `/home/lee-oc/openrisc/or1ksim/cpu/or32'
gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../.. -I../../cpu/common 
-I../../cpu/or1k
-I../../cpu/or32 -I../../cache -I../../mmu -I../../bpb -I../../peripheral 
-I../../tick -I../../pm -I../../pic -I../../debug -I../../vapi    -g -O2 
-DOR32 -c execute.c
In file included from execute.c:611:
execgen.c: In function `decode_execute':
execgen.c:4439: `ARITH_SET_FLAG' undeclared (first use in this function)
execgen.c:4439: (Each undeclared identifier is reported only once
execgen.c:4439: for each function it appears in.)

A quick grep reveled that it is used in 6 "if" statements, but not decleared 
anywhere.  I don't think i'd be able to fix it until I get some experiance 
with it.

I also metioned Linux in the topic.  I saw the Linux port on the website and 
thought that it would be a cool think to help out on.

Is there anything I can help with?

Later
Lee Begg
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