[Bug 1759333] Re: Illegal Instruction with HVF when encountering SSE instructions in the emulator

[Thomas Huth]

This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:

 https://gitlab.com/qemu-project/qemu/-/issues/150


** Changed in: qemu
       Status: Triaged => Expired

** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #150
   https://gitlab.com/qemu-project/qemu/-/issues/150

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https://bugs.launchpad.net/bugs/1759333

Title:
  Illegal Instruction with HVF when encountering SSE instructions in the
  emulator

Status in QEMU:
  Expired

Bug description:
  The latest version of QEMU doesn't seem to support emulated SSE instructions 
with HVF acceleration on macOS.
  The decoder will treat SSE instructions as invalid, get the instruction sizes 
wrong and quickly crash the guest OS because of illegal instructions.
  After having a quick look at target/i386/hvf/x86_decode.c, it seems that SSE 
instruction emulation isn't implemented in the current version of the x86 
emulator.

  A way to reproduce the issue is to run a macOS 10.13 guest with HVF
  acceleration enabled, this will crash in the guest once it's loading
  up the GUI (and also print a "Unimplemented handler" warning from
  target/i386/hvf/x86_emu.c).

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