Microblaze, Xilkernel, and g++

[JackBonn]

I am running the Xilinx Software Development Kit Release Version:
11.2.00

My system has a Microblaze and is running Xilkernel. I have had good
luck getting my code running with the C compiler, but now I am
transitioning to C++ to allow a pile of C++ to be ported over. As a
first step, I renamed all the .c files to be .cpp and got a successful
compile after a few changes, most notably having to add this to one of
my files:

extern "C" {
void xilkernel_init ();
void xilkernel_start ();
int pthread_attr_setstack(const pthread_attr_t *attr, void
*stackaddr, size_t stacksize);
}

I could not find prototypes for any of these three functions. Shame
shame.

I also changed to this:

extern "C" int main(void)

to make the linker happy.

Now that I have a clean compile, I am trying to debug the results. It
seems that some of
the interrupts and/or calls to semaphores are flakey. Specifically,
the timer interrupt is fine since Xilkernel starts, But I am having
trouble with code associated with my interrupt driven driver for the
serial port. Just interrupts and semaphores involved here; when I run
with the original programmed i/o code everything is fine.

Remember, this all worked when I was compiling with gcc compiler and
failed when I went to g++.

In the past, I have used g++ to compile c code as a "better c
compiler". Better at enforcing
interfaces and requiring prototypes. So, these problems are a bit of
a surprise, especially given that the underlying tools are gnu.

Short of debugging the underlying machine/assembly code, does anyone
have any suggestions?

--
Jack Bonn <> Software Design Labs, Inc.
jack.bonn@swlabs.com (847)526-1337

Dyslexics untie.