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author | Peter Maydell <peter.maydell@linaro.org> | 2016-06-13 11:32:24 +0100 |
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committer | Riku Voipio <riku.voipio@linaro.org> | 2016-06-26 13:17:20 +0300 |
commit | affc88cc9b5f8cfa0767139c083329d471862901 (patch) | |
tree | 993affb80a9eef0d02673d9e711b885c2f16c0fe /configure | |
parent | 997f6ed3a1aee93b1b759ff12ad4ca64977c86f9 (diff) | |
download | qemu-affc88cc9b5f8cfa0767139c083329d471862901.zip qemu-affc88cc9b5f8cfa0767139c083329d471862901.tar.gz qemu-affc88cc9b5f8cfa0767139c083329d471862901.tar.bz2 |
configure: Don't allow user-only targets for unknown CPU architectures
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.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'configure')
-rwxr-xr-x | configure | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -1216,6 +1216,13 @@ 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="" |