1 /* Machine-dependent SIGPROF signal handler. IA-64 version.
2 Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 /* In many Unix systems signal handlers are called like this
21 and the interrupted PC is easily findable in the `struct sigcontext'. */
24 profil_counter (int signr
, siginfo_t
*si
, struct sigcontext
*scp
)
26 unsigned long ip
= scp
->sc_ip
& ~0X3ULL
, slot
= scp
->sc_ip
& 0x3ull
;
28 /* Note: Linux/ia64 encodes the slot number in bits 0 and 1. We
29 want to multiply the slot number by four so we can use bins of
30 width 4 to get accurate instruction-level profiling. */
31 profil_count ((void *) (ip
+ 4*slot
));