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[Qemu-devel] [Bug 887516] [NEW] VFP support reported for the PXA270


From: Mircea Gherzan
Subject: [Qemu-devel] [Bug 887516] [NEW] VFP support reported for the PXA270
Date: Tue, 08 Nov 2011 11:06:57 -0000

Public bug reported:

The HWCAPS seems to be broken on PXA, because sigsetjmp of eglibc-2.14
chooses a VFP code path after the hwcaps test [1][2] which causes a
SIGILL on a VSTM instruction.

How to reproduce:
1. build an arm-linux-gnueabi toolchain with eglibc-2.14
2. compile a trivial main()
3. run it with qemu-arm -cpu pxa270

Host: Debian Testing 64bit, 3.0 kernel
Command line: ~/bin/qemu/bin/qemu-arm -cpu pxa270 -L 
~/bin/arm-linux-gnueabi/arm-unknown-linux-gnueabi/sysroot ./test2
Qemu version: git 1d769ceda65eef76bad3356f5b7b0ce8a61e5d76

[1] http://cygwin.com/ml/crossgcc/2011-11/msg00016.html
[2] http://cygwin.com/ml/crossgcc/2011-11/msg00019.html

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/887516

Title:
  VFP support reported for the PXA270

Status in QEMU:
  New

Bug description:
  The HWCAPS seems to be broken on PXA, because sigsetjmp of eglibc-2.14
  chooses a VFP code path after the hwcaps test [1][2] which causes a
  SIGILL on a VSTM instruction.

  How to reproduce:
  1. build an arm-linux-gnueabi toolchain with eglibc-2.14
  2. compile a trivial main()
  3. run it with qemu-arm -cpu pxa270

  Host: Debian Testing 64bit, 3.0 kernel
  Command line: ~/bin/qemu/bin/qemu-arm -cpu pxa270 -L 
~/bin/arm-linux-gnueabi/arm-unknown-linux-gnueabi/sysroot ./test2
  Qemu version: git 1d769ceda65eef76bad3356f5b7b0ce8a61e5d76

  [1] http://cygwin.com/ml/crossgcc/2011-11/msg00016.html
  [2] http://cygwin.com/ml/crossgcc/2011-11/msg00019.html

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