I resolved a "Bus error" recently in
one of the Codec Engine examples
(examples/apps/speech/linuxonly). I can tell you what I was doing
wrong and my solution - perhaps it's similar to your situation and
can be solved similarly.
The example had declared data
buffers as static global arrays of UInt8's, like this:
static XDAS_Int8
inBuf[IFRAMESIZE];
When constructing a pointer to
those buffers, it was mis-aligned, and when these pointers were
dereferenced, I got the "Bus Error" crash.
I changed my code to malloc() the
buffers rather than create them statically; malloc() returns buffers
appropriately aligned.
[ For extra credit, I actually used
Codec Engine's Memory_contigAlloc() rather than malloc(). This
provided buffers which were not only aligned, but also non-cached and
physically contiguous. In this way, I could pass these buffers to
"remote", DSP-side codecs. ]
I think you'll have to provide more
details for us to assist you further. I don't know what your
particular use case is.
Chris
davinci-linux-open-source,hyiu, Hello
when I run my program on dvevm, it will be crashed, and prompt "Bus
error", I know it due to my program try to access odd memory
address.
I want to know what compiling option can fix this error?
2006-11-05
