xref: /freebsd/sys/dev/hwpmc/hwpmc_arm.c (revision 4cc50ab4137814c9f450f214c51fec4503d98e13)

/*-
 * Copyright (c) 2005, Joseph Koshy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/pmc.h>
#include <sys/systm.h>

#include <machine/pmc_mdep.h>
#include <machine/md_var.h>

struct pmc_mdep *
pmc_md_initialize()
{
#ifdef CPU_XSCALE_IXP425
	if (cpu_class == CPU_CLASS_XSCALE)
		return pmc_xscale_initialize();
	else
#endif
		return NULL;
}

void
pmc_md_finalize(struct pmc_mdep *md)
{
#ifdef CPU_XSCALE_IXP425
	if (cpu_class == CPU_CLASS_XSCALE)
		pmc_xscale_finalize(md);
	else
		KASSERT(0, ("[arm,%d] Unknown CPU Class 0x%x", __LINE__,
		    cpu_class));
#endif
}

static int
pmc_save_callchain(uintptr_t *cc, int maxsamples,
    struct trapframe *tf)
{

	*cc = PMC_TRAPFRAME_TO_PC(tf);
	return (1);
}

int
pmc_save_kernel_callchain(uintptr_t *cc, int maxsamples,
    struct trapframe *tf)
{

	return pmc_save_callchain(cc, maxsamples, tf);
}

int
pmc_save_user_callchain(uintptr_t *cc, int maxsamples,
    struct trapframe *tf)
{

	return pmc_save_callchain(cc, maxsamples, tf);
}