mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
33 lines
1.4 KiB
C
33 lines
1.4 KiB
C
|
/* Machine-dependent SIGPROF signal handler. IA-64 version.
|
||
|
|
Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 of the License, or (at your option) any later version.
|
||
|
|
|
||
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; if not, write to the Free
|
||
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||
|
|
02111-1307 USA. */
|
||
|
|
|
||
|
|
/* In many Unix systems signal handlers are called like this
|
||
|
|
and the interrupted PC is easily findable in the `struct sigcontext'. */
|
||
|
|
|
||
|
|
static void
|
||
|
|
profil_counter (int signr, siginfo_t *si, struct sigcontext *scp)
|
||
|
|
{
|
||
|
|
unsigned long ip = scp->sc_ip & ~0X3ULL, slot = scp->sc_ip & 0x3ull;
|
||
|
|
|
||
|
|
/* Note: Linux/ia64 encodes the slot number in bits 0 and 1. We
|
||
|
|
want to multiply the slot number by four so we can use bins of
|
||
|
|
width 4 to get accurate instruction-level profiling. */
|
||
|
|
profil_count ((void *) (ip + 4*slot));
|
||
|
|
}
|