Grant Edwards <[EMAIL PROTECTED]> writes: > I've been unable to get all of the kernel tests to pass on a > NIOS2 platform. Four fail consistently: > > except1.cxx > kexcept1.cxx > kmutex3.c > mutex3.c > > I presume the first two are expected failures because the > -fno-exceptions flag is used during compilation.
The -fno-exceptions flag turns off C++ exceptions. These tests are testing hardware exceptions, a totally different thing. The programs attempt to provoke a hardware exception by first trying to generate an alignment/bus error/memory management exception by poking memory; if that fails it tries a divide by zero. If none of these work, then the test will fail. I don't know what exceptions the NIOS2 support, so either there are no suitable exceptions supported, or there is something wrong in the HAL level code that should deliver the exception to the kernel. Or maybe something needs to be done in the hardware configuration to enable it. > But, I don't > know of any reason why the mutex3 tests shouldn't work. I cannot see any reason for the mutex3 tests to fail. The fact that they run through several permutations before failing is odd. Perhaps it is a stack size or some other memory corruption issue. That is all I can think it might be at present. -- Nick Garnett eCos Kernel Architect http://www.ecoscentric.com The eCos and RedBoot experts http://www.ecoscentric.com/legal Legal info, address and number -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
