Le 14/06/2016 à 11:52, Peter Maydell a écrit : > For the user-only targets, we need to know something about the host CPU > architecture even if we are using the TCI interpreter rather than TCG. > (In particular user-exec.c has code for handling signals that needs > to know about that host's context structures.) > > Specifically forbid building the user-only targets on unknown CPU > architectures, rather than allowing them to configure but then fail > when building user-exec.c. > > This change drops supports for two configurations which were theoretically > possible before: > * linux-user targets on M68K hosts using TCI > * linux-user targets on HPPA hosts using TCI > > We don't think anybody is actually trying to use these in practice, though: > * interpreted TCG on a slow host CPU would be unusably slow > * the m68k user-exec.c support is missing is_write detection so guest > code which writes to the same page it is executing from was broken > (will include any guest program using signals) > * HPPA TCG backend support was dropped two and a half years ago > with no complaints > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Laurent Vivier <laur...@vivier.eu> > --- > configure | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/configure b/configure > index 7ab4e0b..62f93e3 100755 > --- a/configure > +++ b/configure > @@ -1217,6 +1217,13 @@ esac > QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS" > EXTRA_CFLAGS="$CPU_CFLAGS $EXTRA_CFLAGS" > > +# For user-mode emulation the host arch has to be one we explicitly > +# support, even if we're using TCI. > +if [ "$ARCH" = "unknown" ]; then > + bsd_user="no" > + linux_user="no" > +fi > + > default_target_list="" > > mak_wilds="" >
