From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35243) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f34lp-0006Gw-Ni for qemu-devel@nongnu.org; Mon, 02 Apr 2018 15:05:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f34lm-0008Fg-Iv for qemu-devel@nongnu.org; Mon, 02 Apr 2018 15:05:33 -0400 Received: from mout.kundenserver.de ([212.227.17.24]:38725) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1f34lm-0008F5-8t for qemu-devel@nongnu.org; Mon, 02 Apr 2018 15:05:30 -0400 References: <20180320090813.852-1-laurent@vivier.eu> <7cac14a3-c097-572e-4b61-8960209f6bd9@vivier.eu> <67f4fb22-9ad5-7f41-371a-001d1346fc4f@landley.net> From: Laurent Vivier Message-ID: Date: Mon, 2 Apr 2018 21:05:21 +0200 MIME-Version: 1.0 In-Reply-To: <67f4fb22-9ad5-7f41-371a-001d1346fc4f@landley.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] [PULL 0/2] M68k for 2.12 patches List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Rob Landley , qemu-devel@nongnu.org Cc: Finn Thain Le 02/04/2018 à 20:13, Rob Landley a écrit : > On 03/30/2018 12:00 PM, Laurent Vivier wrote: >> Le 30/03/2018 à 18:54, Rob Landley a écrit : >>> On 03/20/2018 04:08 AM, Laurent Vivier wrote:> This series of patches is needed >>> to fix a problem >>>> in the m68k translator that can crash QEMU when translation >>>> cache has too many instructions: >>>> >>>> qemu-m68k: tcg/tcg.c:883: tcg_temp_alloc: Assertion `n < 512' failed. >>>> qemu: uncaught target signal 11 (Segmentation fault) - core dumped >>>> >>>> I have reproduced it in linux user mode, with "ghc", and in >>>> system mode with the debian-installer for unstable distro >>>> from debian-ports. >>> >>> If someone wanted to follow along with your "boot linux on qemu-system-m68k" >>> work on https://github.com/vivier/qemu-m68k, which of the 51 branches should >>> qemu-system-m68k with like -M q800 or whatever you had working be built from? >> >> The branch to use is q800-dev > > There isn't any m68k support in musl-libc yet, so I grabbed my old > https://github.com/landley/aboriginal project, did a "./build.sh m68k", built > your q800-dev branch, added the m68k-softmmu from that to the start of the > $PATH, and ran "more/dev-environment-from-build.sh m68k". > > It booted Linux to a shell prompt, I could wget a file from the internet, and > /home had the 2 gigabyte ext3 mount from the virtual block device. > > I.E. it works for me. Why is it still out of tree? Remaining patches need some cleanup before being submitted. I have to submit some enhancements in the FPU emulation, but as they modify fpu/softfloat.c, I don't want to put them as is in an m68k pull-req: target/m68k: manage FPU exceptions softfloat: define floatx80_is_any_nan for m68k softfloat: disable floatx80_invalid_encoding() for m68k I have to add some specific m68k hardware emulation: m68k: add via support m68k: add video card q800: Apple Sound Chip (ASC) emulation q800: add Nubus support q800: add a dummy SWIM floppy controller m68k: define Macintosh Quadra 800 but via support should be rewritten as Mark has introduced a new generic mos6522 VIA device. I have to update some existing hardware emulation: ESP: add pseudo-DMA as used by Macintosh escc: introduce a selector for the register bit dp8393x: fix receiving buffer exhaustion dp8393x: put DMA temp buffer in the state, not in the stack dp8393x: manage big endian bus dp8393x: fix dp8393x_receive So, this only needs some work and time. I hope q800 will be available in QEMU 2.13. Thanks, Laurent