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[83.59.162.106]) by smtp.gmail.com with ESMTPSA id k190sm2694086wme.33.2020.10.16.06.05.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 16 Oct 2020 06:05:21 -0700 (PDT) Subject: Re: [PATCH v8 0/5] Mac Old World ROM experiment (ppc/mac_* clean ups and loading binary ROM) To: Mark Cave-Ayland , BALATON Zoltan , qemu-devel@nongnu.org, qemu-ppc@nongnu.org References: <005ed95d-65ee-ab36-c068-e96a773ef8ed@ilande.co.uk> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: <7c34f053-268e-6dbf-205f-48792328ebe8@amsat.org> Date: Fri, 16 Oct 2020 15:05:20 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.3.1 MIME-Version: 1.0 In-Reply-To: <005ed95d-65ee-ab36-c068-e96a773ef8ed@ilande.co.uk> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::343; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x343.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NICE_REPLY_A=-0.253, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 10/16/20 11:58 AM, Mark Cave-Ayland wrote: > On 16/10/2020 00:47, BALATON Zoltan via wrote: > >> This is the cut down version of the earlier series omitting unfinished >> patches that I plan to rework later and rebased to Mark's qemu-macppc >> branch. Compared to v7 the only change is the cast to (target_ulong) >> from (uint32_t) as requested by Mark in patch 1. > > FWIW the reason for suggesting the cast to target_ulong is so that the > same code works for both qemu-system-ppc and qemu-system-ppc64. For > qemu-system-ppc that should correctly drop the sign extension from > 32-bit, whilst still allowing someone to load a 64-bit ELF into > qemu-system-ppc64 if requested. IMO this is part of a bigger design problem. Not all machines main bus is 64-bit. I did some experiments but changing that involves a lot of work.