[ECOS] Network driver problem only with larger programs...

["Joe Porthouse" <jporthouse at toptech dot com>]

I've been stuck here for a while, so any advice would be greatly
appreciated.

Working with my small application, I am successfully able to manually
configure the SMSC 91C111 driver from my application and everything seems to
work without a problem (ping and socket connections).

When I attempt to do the same in my much larger application, execution only
gets a few lines into my main and locks up.  The "network interface
initialization" call in my application is not even called yet.

If I ifdef out most of the code in my main (causing many functions to be
excluded from the .bin file), the lockup no longer occurs.

The "network initialization" that eCos does seems to be completing
successfully from the debug messages I see, but after a timer tick,
alarm_thread(), do_timeout() and ip_reass(), the execution gets hung up in
an illegal memory reference.

Init device '/dev/ttydiag'
Init tty channel: 288eac
Init device '/dev/haldiag'
HAL/diag SERIAL init
Network stack using 69632 bytes for misc space
                    69632 bytes for mbufs
                    139264 bytes for mbuf clusters
[cyg_net_init] Init: mbinit(0x00000000)
[cyg_net_init] Init: cyg_net_init_devs(0x00000000)
Init device 'lan91cxx_eth0'
[cyg_net_init] Init: loopattach(0x00000000)
[cyg_net_init] Init: ifinit(0x00000000)
[cyg_net_init] Init: domaininit(0x00000000)
[cyg_net_init] Init: cyg_net_add_domain(0x00288b90)
New domain internet at 0x00000000
[cyg_net_init] Init: cyg_net_add_domain(0x00288620)
New domain route at 0x00000000
[cyg_net_init] Init: call_route_init(0x00000000)
[cyg_net_init] Done
1
(something bad happens here...)

My instinct says I am exceeding some memory limit somewhere (stack, heap,
code space, my sanity).  I have increased the main() stack size from 8192 to
32,000 with no luck.  I have a total of 64MB of SDRAM with a program image
size of about 3.2 MB.  Application is run from RAM.  I am not using RedBoot,
but compiling up eCos and my application into a single binary image.

Joe Porthouse
Toptech Systems, Inc.
Longwood, FL 32750



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