gdb

gdb rust_blink 
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Reading symbols from rust_blink...done.
(gdb) break main
Breakpoint 1 at 0x4434
(gdb) start
Temporary breakpoint 2 at 0x4434
Starting program: /home/rust_blink 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".

Breakpoint 1, 0x2a004434 in main ()
(gdb) s
Single stepping until exit from function main,
which has no line number information.
0x2a00ddd0 in rt::lang_start::h22ceb5524653f1ee6mw ()
(gdb) s
Single stepping until exit from function _ZN2rt10lang_start20h22ceb5524653f1ee6mwE,
which has no line number information.
record_sp_limit () at /home/redpitaya/rust/src/rt/arch/arm/record_sp.S:25
25	/home/redpitaya/rust/src/rt/arch/arm/record_sp.S: No such file or directory.
(gdb) c
Continuing.

Program received signal SIGBUS, Bus error.
0x36f524a0 in memset () from /lib/arm-linux-gnueabihf/libc.so.6