target-i386: Don't left shift negative constant
commit712b4243c761cb6ab6a4367a160fd2a42e2d4b76
authorEduardo Habkost <ehabkost@redhat.com>
Tue, 29 Sep 2015 20:34:23 +0000 (29 17:34 -0300)
committerEduardo Habkost <ehabkost@redhat.com>
Tue, 27 Oct 2015 17:52:11 +0000 (27 15:52 -0200)
tree2ac1a7b6ebaeb5c6124e46ba06ea13cdc9a95749
parent7e038b94e74e1c2d1b3598e2e4b0b5c8b79a7278
target-i386: Don't left shift negative constant

Left shift of negative values is undefined behavior. Detected by clang:
  qemu/target-i386/translate.c:2423:26: runtime error:
    left shift of negative value -8

This changes the code to reverse the sign after the left shift.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
target-i386/translate.c