On 18/11/2014 23:50, Peter Maydell wrote: > On 18 November 2014 21:19, Paolo Bonzini <pbonz...@redhat.com> wrote: >> The isa-debugexit and testdev character device do not exit with exitcode >> 0, in order to distinguish an exit from a system power down; the >> low-order bit is always 1. The return values then should be 1 and 3 >> instead of 0 and 1. > > Semihosting isn't a test device -- it's an implementation of an > ABI (mostly intended for almost-but-not-quite-bare-metal programs). > I'm pretty sure that exiting anything except 0 on a successful > exit request by the guest will break usage of QEMU in scenarios > like the gcc test suite.
Thanks! (FWIW, I don't find the behavior of those devices very useful either... just mentioning them for the sake of consistency). Paolo
