Programming

(Ubuntu 11.04)
I've just installed the debugger DDD, and I'm literally testing a 'hello world' program, but whilst breakpoints are being hit, the (next to) execute line is not highlighted, and when I click 'Next' the code runs to the end?

It sounds like you may not have compiled with debugging information - did you pass the -g flag to gcc?

Thanks for helping me. To be honest I'm following the Duntemann Step/Step TY Assembly book and I copied the compile line straight from the pdf which I'm pretty sure had the debug symbols switch set (its the Nasm compiler)

---------- Post updated at 09:38 AM ---------- Previous update was at 09:27 AM ----------

I just redid the compile in a different folder, this is the compile line i used:

nasm -f elf -g -F stabs eatsyscall.asm -o eatdemo.o

and definitely the same problem.

Could you post the code you're using?

I can if you think it'd help, but it really is just a 'hello world' app taken from the book and it is running ok.
I'm compiling with :

Code:

 nasm -f elf -g -F stabs eatsyscall.asm -o eatdemo.o

and linking with

Code:

ld -o eatsyscall eatsyscall.o

I guess it must be something to do with the way I installed DDD, or a setting...maybe...
I'm starting to realise these assembly debuggers are becoming a thing of the past and they all seem to have been abandoned by their developers.

---------- Post updated at 01:21 PM ---------- Previous update was at 12:51 PM ----------

Do you think it might be something to do with the compiler (nasm) version?

nasm isn't a compiler, it's an assembler. I'm not positive how to make it generate appropriate debug info.

You're not trying to debug inside a system call, right?

thanks for both of your help. I fixed it! by compiling with dwarf instead of stabs (as it said in the help it contained more debug 'stuff') and now its showing the highlight and stepping.