Debugging ARM files with DDD (Simulation)

DDD is a graphical front-end to a variety of debuggers, including arm-elf-gdb.


Installation

In Ubuntu, install by running sudo apt-get install ddd 

For OS X, you can try your luck over here.

Usage

With the GNU ARM tools installed, in the terminal run ddd --debugger arm-elf-gdb &

Click File -> Open Program. Select your ELF file (that was assembled with --gdwarf2).
In the GDB console (the bottom pane), type

(gdb) target sim 

(gdb) load

(gdb) start 

You can view the registers by clicking Source -> Registers.

You can now step through the program, set breakpoints, and perform most other functions that GDB is capable of.