From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34667) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YNMnS-0004py-C0 for qemu-devel@nongnu.org; Mon, 16 Feb 2015 09:37:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YNMnP-0000ur-Ln for qemu-devel@nongnu.org; Mon, 16 Feb 2015 09:37:14 -0500 Received: from out1134-201.mail.aliyun.com ([42.120.134.201]:28458) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YNMnO-0000ko-Vr for qemu-devel@nongnu.org; Mon, 16 Feb 2015 09:37:11 -0500 Message-ID: <54E20265.9040606@sunrus.com.cn> Date: Mon, 16 Feb 2015 22:44:53 +0800 From: Chen Gang S MIME-Version: 1.0 References: <54DD17BC.5040006@sunrus.com.cn> <54DD180B.3080004@sunrus.com.cn> <54DE8DCA.6030302@sunrus.com.cn> <54DEBC3E.4000805@sunrus.com.cn> <54DEC303.6030502@ezchip.com> <54DF6F90.60406@sunrus.com.cn> <54E1669F.9090402@sunrus.com.cn> In-Reply-To: <54E1669F.9090402@sunrus.com.cn> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 1/5] target-tile: Firstly add to qemu with minimized features List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell , Chris Metcalf Cc: "walt@tilera.com" , Riku Voipio , qemu-devel , "rth@twiddle.net" Excuse me, after comparing the code details between kernel version disassembler and binutils version disassembler, I am sure the kernel version disassembler is the part of the binutils version disassembler: - kernel version is DISASM_ONLY. - kernel version does not need BFD_RELOC. - kernel version has defined __KERNEL__ (so need not check it again). - kernel version decode_X1_fsm[1206] is older than binutils version decode_X1_fsm[1266]. I guess, for qemu, we need !DISASM_ONLY, and may need BFD_RELOC, and may need the latest decode_X1_fsm, and also may need !__KERNEL__ -- which means we will use the full binutils version disassembler!! In current condition, I really don't know how to do next. Welcome any ideas, and suggestions. Thanks. On 2/16/15 11:40, Chen Gang S wrote: > Excuse me, I want to consult the related information about SPR. > > For SPRs (Special Purpose Register) under tilegx, I can not get related > documents (I only got the tilepro related document for SPR). After read > through the source code of Linux kernel for tile, I guess: > > - SPRs are in "arch/tile/include/uapi/arch/spr_def_64.h". > > - SPRs are all 64-bit registers (I referenced the 'interrupt_mask' and > CHIP_HAS_SPLIT_INTR_MASK to know about it). > > If what I guess is incorrect, please let me know. And welcome to provide > tilegx SPR related documents, too. > > Thanks. > > On 2/14/15 23:53, Chen Gang S wrote: >> On 2/14/15 13:47, Peter Maydell wrote: >>> On 14 February 2015 at 03:37, Chris Metcalf wrote: >>>> I'm not sure whether Tilera can simply re-release the tilegx-specific stuff >>>> from binutils as a separate tarball with GPL v2 licensing. Hopefully we can >>>> avoid having to figure that out. :-) >>> >>> I believe it is theoretically possible (the usual FSF copyright arrangements >>> involve the original authors giving the copyright to the FSF but being >>> granted back a right to distribute their work under other licenses). >>> However it is definitely a "check with your lawyers" kind of question >>> and I entirely appreciate the desire to avoid having to go down that >>> route :-) >>> >> >> For me, the main feature of kernel disassembly implementation is almost >> the same as the feature of binutils disassembly implementation. And all >> of related code are not quite much (only several thousand lines), >> >> So at present, I guess, we needn't consider more about the related >> license. >> >> >> Thanks >> > -- Chen Gang Open, share, and attitude like air, water, and life which God blessed