Re: [Jack-Devel] Alignment trap: not handling instruction

On 01/27/14 21:24, Adrian Knoth wrote:

>> Alignment trap: not handling instruction edc46a06 at [<b6eece14>]
>> Unhandled fault: alignment exception (0x811) at 0xb6cc21e6
> In jackd2, we've undefined POST_PACKED_STRUCTURE, but this breaks the
> dummy driver on my raspberry.
>
> You can give it a try, if you like. In a couple of minutes, we most
> likely have a single location for you to change, but I need more ARM
> testers.

Update your jackd1 git checkout (git pull && gitsubmodule update).

You can now cd into jack/ and try the following patch:

diff --git a/types.h b/types.h
index 1e17917..8f2b8cb 100644
--- a/types.h
+++ b/types.h
@@ -38,7 +38,11 @@ typedef int32_t jack_shmsize_t;
     than use the natural alignment of the processor and/or
     compiler.
  */
+#ifdef __arm__
+#  define POST_PACKED_STRUCTURE
+#else
  #  define POST_PACKED_STRUCTURE __attribute__((__packed__))
+#endif /* ARM */
  #else
  /* Add other things here for non-gcc platforms */
  #endif


Note that this patch breaks the dummy driver on my raspberry, that's why
I cannot commit it as-in. Maybe I'm missing something, but frankly, I'm
not too familiar with ARM, yet.



Cheers

1390855387.3898_0.ltw:2,Sa <52E6C4D4.1020506 at drcomp dot erfurt dot thur dot de>