From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750865AbdAOI3K (ORCPT ); Sun, 15 Jan 2017 03:29:10 -0500 Received: from mail-pf0-f195.google.com ([209.85.192.195]:34762 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750775AbdAOI3J (ORCPT ); Sun, 15 Jan 2017 03:29:09 -0500 Date: Sun, 15 Jan 2017 17:29:04 +0900 From: Stafford Horne To: kbuild test robot Cc: kbuild-all@01.org, Jonas Bonn , Stefan Kristiansson , linux@roeck-us.net, openrisc@lists.librecores.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 07/22] openrisc: add atomic bitops Message-ID: <20170115082904.GG25986@lianli.shorne-pla.net> References: <596c83f9fb4a2deb52b4d69eaabda059ed9f57b5.1484432596.git.shorne@gmail.com> <201701151315.HUoKM2W9%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201701151315.HUoKM2W9%fengguang.wu@intel.com> User-Agent: Mutt/1.7.1 (2016-10-04) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Sun, Jan 15, 2017 at 01:42:56PM +0800, kbuild test robot wrote: > Hi Stefan, > > [auto build test ERROR on linus/master] > [also build test ERROR on v4.10-rc3 next-20170113] > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] > > url: https://github.com/0day-ci/linux/commits/Stafford-Horne/Openrisc-patchees-from-backlog-for-4-11/20170115-121623 > config: openrisc-or1ksim_defconfig (attached as .config) > compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1 > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=openrisc > > All errors (new ones prefixed by >>): > > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > net/core/dev.c: In function 'validate_xmit_skb_list': > net/core/dev.c:2989:39: warning: 'tail' may be used uninitialized in this function > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:35: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:37: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:90: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:92: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > -- > arch/openrisc/include/asm/bitops/atomic.h: Assembler messages: > >> arch/openrisc/include/asm/bitops/atomic.h:70: Error: unknown opcode2 `l.lwa'. > >> arch/openrisc/include/asm/bitops/atomic.h:72: Error: unknown opcode2 `l.swa'. > arch/openrisc/include/asm/bitops/atomic.h:18: Error: unknown opcode2 `l.lwa'. > arch/openrisc/include/asm/bitops/atomic.h:20: Error: unknown opcode2 `l.swa'. > > vim +70 arch/openrisc/include/asm/bitops/atomic.h > > 64 { > 65 unsigned long mask = BIT_MASK(nr); > 66 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); > 67 unsigned long old; > 68 unsigned long tmp; > 69 > > 70 __asm__ __volatile__( > 71 "1: l.lwa %0,0(%2) \n" > > 72 " l.or %1,%0,%3 \n" > 73 " l.swa 0(%2),%1 \n" > 74 " l.bnf 1b \n" > 75 " l.nop \n" > All of these are due to the lwa/swa instructions. A toolchain from the last 2 years would be needed to build these instructions. Can I suggest that the test chain be updated? I would suggest musl. But there are currently two options openrisc team is maintaining. :: or1k-musl-linux- chain :: Get it here: https://github.com/openrisc/or1k-gcc/tree/musl-5.4.0/gcc - build using https://github.com/openrisc/musl-cross (would suggest my pull request - will merge soon https://github.com/openrisc/musl-cross/pull/1) :: or1k-elf- chain :: Get it here: https://github.com/openrisc/or1k-gcc/tree/or1k-5.4.0/gcc - build using baremetal/newlib https://github.com/openrisc/newlib - instructions http://openrisc.io/newlib/building.html - Stafford