How to get along with memory access errors?

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originally posted by mir@Jul 27 2006, 11:02 AM

cleanertm,

are you sure your hardware is working properly? do you use a custom board?

mike

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Not 100% sure, but nearly 99%, because the last software version (about half year old) is working much better with the same design. But i have to much changes in code, to fall back. Was my failure, to put to much changes into the code.

But also, the older version is not totally stable, thats why only 99%. But i&#39;m very sure, that it must be a memory leak problem or/and race condition occurence...

Last chance, i see, is to reproduce the call graph, after detecting the hangup, but this is not very easy and takes horrible much time to implement i guess:

- Using -instrumentation feature of the compiler (insert entry and exit callbacks on fucntion calls)

- logging every call in a 40MB memory area (hold 25 sec. execution, wors case)

- after detecting hangup, connect to gdb-server and halt cpu

- read out 40mb memory area over jtag interface

- reconstruct call graph by the help of the symbol table from elf-file

but this beats my time repository... http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif