target-i386: Fix jmp im on x86_64 when executing 32-bit code
When running grub-install (32-bit) on an x86_64 Linux system in qemu, it hangs on a pagefault forever, because an integer overflow occurs on the IP on "jmp im". This patch masks overflows for 32 bit IPs on a 64 bit system, just like it is done for 16 bit IPs already. Using this patch, x86_64 openSUSE installation works again. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NKevin Wolf <kwolf@suse.de> Signed-off-by: NAurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5963 c046a42c-6fe2-441c-8c8c-71466251a162
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