[Qemu-devel] [Bug 1477683] Re: FPU in qemu-system-i386 works incorrectly

[Sandmann]

I think, that I have the same issue. After some git bisect, I found out
that commit ea32aaf1a72af102b855317b47a22e75ac2965a9 has introduced the
problem. Attached is a patch that fixes the issue for me. Maybe you can
try this out, too.

** Patch added: 
"0001-target-i386-Fix-conversion-infinity-from-float80-to-.patch"
   
https://bugs.launchpad.net/qemu/+bug/1477683/+attachment/4433257/+files/0001-target-i386-Fix-conversion-infinity-from-float80-to-.patch

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https://bugs.launchpad.net/bugs/1477683

Title:
  FPU in qemu-system-i386 works incorrectly

Status in QEMU:
  New

Bug description:
  FPU bug in qemu-system-i386 makes software which use floating point
  numbers work incorrectly. For instance, the one included in attachment
  prints out 0 instead of 2147483648. The same code works ok in qemu-
  system-x86_64.

  I have this issue in QEMU 2.3.0 on two different GNU/Linux guests
  (Parabola GNU/Linux-libre and libreCMC).

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