(gdb) print boot_helper
$1 = {<text variable, no debug info>} 0x864238 <boot_helper>
(gdb) hbreak boot_helper
Hardware assisted breakpoint 1 at 0x864238
(gdb) c
Continuing.

Program received signal SIGTRAP, Trace/breakpoint trap.
0x42380000 in ?? ()
(gdb) p/x $pc
$2 = 0x42380000