tools/reorder/cygprof.c

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/tools/reorder/cygprof.c	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,27 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +/*
     1.9 +
    1.10 +  A stub library to LD_PRELOAD against an image that's been compiled
    1.11 +  with -finstrument-functions. It dumps the address of the function
    1.12 +  that's being entered upon function entry, and the address that's
    1.13 +  being returned to on function exit. Addresses are dumped as binary
    1.14 +  data to stdout.
    1.15 +
    1.16 + */
    1.17 +
    1.18 +#include <unistd.h>
    1.19 +
    1.20 +void
    1.21 +__cyg_profile_func_enter(void *this_fn, void *call_site)
    1.22 +{
    1.23 +    write(STDOUT_FILENO, &this_fn, sizeof this_fn);
    1.24 +}
    1.25 +
    1.26 +void
    1.27 +__cyg_profile_func_exit(void *this_fn, void *call_site)
    1.28 +{
    1.29 +    write(STDOUT_FILENO, &call_site, sizeof call_site);
    1.30 +}

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