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[222.155.6.212]) by smtp.gmail.com with ESMTPSA id v25sm1884642pfm.202.2021.08.26.00.47.10 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 26 Aug 2021 00:47:14 -0700 (PDT) Subject: Re: RFC: remove set_fs for m68k To: Brad Boyer References: <7517d306-21ad-daa1-a2fb-b273211cb588@gmail.com> <57501cee-de70-99e5-3a92-e5d2a515bb51@gmail.com> <87bl5n9q1e.fsf@igel.home> <208ad46d-e4ef-68e3-97d0-aa7756852a92@gmail.com> <878s0px6al.fsf@igel.home> <20210825233054.GA31679@allandria.com> Cc: Andreas Schwab , Linus Torvalds , Christoph Hellwig , Geert Uytterhoeven , Greg Ungerer , linux-m68k From: Michael Schmitz Message-ID: Date: Thu, 26 Aug 2021 19:46:24 +1200 User-Agent: Mozilla/5.0 (X11; Linux ppc64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <20210825233054.GA31679@allandria.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org Hi Brad, thanks, I can see the tables in that one. My searches only showed the newer version which comes in two parts ... The 'vector offset' 8 in the format/vector field indicates a bus error. Not sure that helps pin down the cause without debugging the 030 bus error handler. Format b bus faults might be quite frequent ... Cheers, Michael On 26/08/21 11:30, Brad Boyer wrote: > On Thu, Aug 26, 2021 at 10:59:30AM +1200, Michael Schmitz wrote: >> On Wed, Aug 25, 2021 at 8:44 PM Andreas Schwab wrote: >>> On Aug 25 2021, Michael Schmitz wrote: >>> >>>> the manuals on the NXP web site don't have the exception frame format >>>> tables, >>> See 8.4 EXCEPTION STACK FRAME FORMATS. >> Not in my copy of part 2 of the 030 manual. The section is there, the >> pages that are marked 'Exception Stack Frame format' (pp 8-32, 8-33) >> are there, but the pages are blank (except for header and footer). >> >> Tried with acroread, xpdf and evince. >> >> The original Programmer's Reference Manual has the frame formats in >> section B.2 (without any explanation of the fields' meanings, >> however). > It shows up fine for me in the embedded PDF reader in Chrome. There's > what is clearly a picture of the formats, as the image quality is > really bad. I can read it, but the lines are kind of jagged and the > text is pretty messy. Specifically, I'm looking at page 300 (8-33) in > the PDF found at this URL: > > https://www.nxp.com/docs/en/reference-manual/MC68030UM.pdf > > Perhaps those other programs aren't handling however that raw image > is encoded inside the file. > > Brad Boyer > flar@allandria.com >