On Mon, Jul 12, 2004 at 12:09:30 -0700, Talib Alim wrote: > This may be a trivial question, but I hope that someone can answer me. > I am bring up u-boot on 8xx. > > While doing source level debugging under ddd, whenever I do step, > stepi, next or nexti I see green instruction pointer jump all over the > code. e.g. it would go to first line, than third line, than 7 line. If > I look at machine code window, it is running in normal predictable way. This often happens if you compile the code with optimisations. Have you ran the compiler with -On for n >= 1? With many compilers debugging (-g) and optimization (-O) options are mutualy exclusive, but GCC allows you to specify them both. But it can do lot of funny things when you do. IIRC there are some comment in gcc manual concerning the issue (somewhere around description of -g option, I believe). ------------------------------------------------------------------------------- Jan 'Bulb' Hudec <bulb@ucw.cz>
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