Re: [Bug 1926202] Re: qemu-user can't run some ppc binaries

[Laurent Vivier]

Le 29/04/2021 à 19:20, Aaron Simmons a écrit :
> Thanks for looking into this.  What reference did you use to check which
> ISA "cmpb" is in?
> 

It's in the QEMU source, but you can check the specs:

POWER ISA 2.04 -> no cmpb

https://wiki.raptorcs.com/w/images/6/65/PowerISA_V2.04-FINAL.Public.pdf

POWER ISA 2.05 -> cmpb

https://wiki.raptorcs.com/w/images/5/50/PowerISA_V2.05.pdf

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1926202

Title:
  qemu-user can't run some ppc binaries

Status in QEMU:
  New

Bug description:
  qemu-user v6.0.0-rc5, built in static mode, will crash for certain ppc
  binaries.  It seems to have something to do with glibc for some Centos
  versions.  The problem is easiest to see with statically-linked
  binaries.

  The attached Dockerfile shows how to produce a ppc binary that will
  crash qemu-user.  Here is how to reproduce the problem:

  $ uname -m
  x86_64

  $ docker run --rm --privileged multiarch/qemu-user-static --reset -p
  yes

  $ docker build -t qemu-bug:centos -f Dockerfile.centos .

  $ docker run --rm -it -v$PWD:$PWD -w$PWD qemu-bug:centos cp
  /helloworld-centos.static.ppc .

  $ qemu-ppc-static --version
  qemu-ppc version 5.2.95 (v6.0.0-rc5)
  Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers

  $ qemu-ppc-static ./helloworld-centos.static.ppc
  emu: uncaught target signal 4 (Illegal instruction) - core dumped
  [1]    16678 illegal hardware instruction (core dumped)  qemu-ppc-static 
./helloworld-centos.static.ppc

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1926202/+subscriptions