On Wed, Oct 31, 2018 at 8:43 AM Christophe Lyon
<christophe.l...@linaro.org> wrote:
> I also built qemu from the branch you mentioned,
> and used the "run it on linux-user QEMU" section in the wiki
>
> I see many execution errors, now realizing that I didn't
> do what you said above: "apply gcc part of the xtensa overlay".
> But what is this?
It's a set of files that must be replaced in the toolchain source to configure
it for a specific xtensa core.
For gcc the config that you've built changes single file,
include/xtensa-config.h
and the change is the following:
--8<--
diff --git a/include/xtensa-config.h b/include/xtensa-config.h
index d6713d23a6b2..18899f827ea7 100644
--- a/include/xtensa-config.h
+++ b/include/xtensa-config.h
@@ -25,7 +25,7 @@
macros. */
#undef XCHAL_HAVE_BE
-#define XCHAL_HAVE_BE 1
+#define XCHAL_HAVE_BE 0
#undef XCHAL_HAVE_DENSITY
#define XCHAL_HAVE_DENSITY 1
-->8--
> And while writing this reply, I'm just realizing that buildroot builds
> for uclinux-uclibc-gcc, while the wiki uses linux-uclibc :(
> Does the wiki need an update wrt target name?
Yeah, I used it as an example. Let me update it so that it works
for uclinux without obscure modifications.
I was able to figure out why C++ exceptions didn't work: because
the target code was built as PIC by default and it's not supported
by the bFLT file format. I've posted a fix here:
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg00286.html
--
Thanks.
-- Max
