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[Qemu-devel] [Bug 1254786] Re: qemu-m68k-static: illegal instruction ebc


From: Laurent Vivier
Subject: [Qemu-devel] [Bug 1254786] Re: qemu-m68k-static: illegal instruction ebc0 during debootstrap second stage
Date: Wed, 14 Feb 2018 08:27:47 -0000

0xebc0 is "bfexts" with register and is implemented since:

    ac815f46a3 target-m68k: Implement bitfield ops for registers

Available since qemu v2.9.0

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https://bugs.launchpad.net/bugs/1254786

Title:
  qemu-m68k-static: illegal instruction ebc0 during debootstrap second
  stage

Status in QEMU:
  Incomplete
Status in qemu-linaro package in Ubuntu:
  New

Bug description:
  Host: Ubuntu Precise amd64
  Guest: Debian (ports) sid m68k

  $ sudo qemu-debootstrap --no-check-gpg --arch=m68k sid m68k 
http://ftp.debian-ports.org/debian
  I: Running command: debootstrap --arch m68k --foreign --no-check-gpg sid m68k 
http://ftp.debian-ports.org/debian
  [...]
  I: Running command: chroot m68k /debootstrap/debootstrap --second-stage
  qemu: fatal: Illegal instruction: ebc0 @ f67e5662
  D0 = 6ffffef5   A0 = f67fbf58   F0 = 0000000000000000 (           0)
  D1 = 0000010a   A1 = 00000000   F1 = 0000000000000000 (           0)
  D2 = 0000000f   A2 = 00000000   F2 = 0000000000000000 (           0)
  D3 = 00000000   A3 = f67e0000   F3 = 0000000000000000 (           0)
  D4 = 00000000   A4 = 00000000   F4 = 0000000000000000 (           0)
  D5 = 00000000   A5 = f67fc000   F5 = 0000000000000000 (           0)
  D6 = 00000000   A6 = f6fff7cc   F6 = 0000000000000000 (           0)
  D7 = 00000000   A7 = f6fff580   F7 = 0000000000000000 (           0)
  PC = f67e5662   SR = 0000 ----- FPRESULT =            0
  Aborted (core dumped)

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: qemu-user-static 1.0.50-2012.03-0ubuntu2.1
  ProcVersionSignature: Ubuntu 3.8.0-33.48~precise1-generic 3.8.13.11
  Uname: Linux 3.8.0-33-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Mon Nov 25 16:08:26 2013
  Dependencies:
   
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 
(20130820.1)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: qemu-linaro
  UpgradeStatus: No upgrade log present (probably fresh install)

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