Thanks. This is why I asked for a complete transcript - now it is apparent what is wrong. On Mon, Jun 26, 2006 at 04:42:43PM +0600, Niklaus wrote: > pro@deb:~/armenv/bin$ ./arm-elf-gdb first.o You have to run the simulator using fully linked executables, not just object files. See the linker scripts that are part of newlib. -- Daniel Jacobowitz CodeSourcery