michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0: 
michael@0:   A stub library to LD_PRELOAD against an image that's been compiled
michael@0:   with -finstrument-functions. It dumps the address of the function
michael@0:   that's being entered upon function entry, and the address that's
michael@0:   being returned to on function exit. Addresses are dumped as binary
michael@0:   data to stdout.
michael@0: 
michael@0:  */
michael@0: 
michael@0: #include <unistd.h>
michael@0: 
michael@0: void
michael@0: __cyg_profile_func_enter(void *this_fn, void *call_site)
michael@0: {
michael@0:     write(STDOUT_FILENO, &this_fn, sizeof this_fn);
michael@0: }
michael@0: 
michael@0: void
michael@0: __cyg_profile_func_exit(void *this_fn, void *call_site)
michael@0: {
michael@0:     write(STDOUT_FILENO, &call_site, sizeof call_site);
michael@0: }