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Re: [Qemu-devel] [PATCH 1/5] target-tile: Firstly add to qemu with minim

From: Chen Gang S
Subject: Re: [Qemu-devel] [PATCH 1/5] target-tile: Firstly add to qemu with minimized features
Date: Mon, 16 Feb 2015 11:40:15 +0800
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

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.


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 <address@hidden> 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

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