0ce207d2af
This brings hwpmc(4) support for 2nd and 3rd generation XScale cores. Right now it's enabled by default to make sure we test this a bit. When the time comes it can be disabled by default. Tested on Gateworks boards. A man page is coming. Obtained from: //depot/user/rpaulo/xscalepmc/...
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*-
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* Copyright (c) 2005, Joseph Koshy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/pmc.h>
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#include <sys/systm.h>
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#include <machine/pmc_mdep.h>
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#include <machine/md_var.h>
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struct pmc_mdep *
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pmc_md_initialize()
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{
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if (cpu_class == CPU_CLASS_XSCALE)
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return pmc_xscale_initialize();
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else
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return NULL;
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}
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void
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pmc_md_finalize(struct pmc_mdep *md)
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{
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if (cpu_class == CPU_CLASS_XSCALE)
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pmc_xscale_finalize(md);
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else
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KASSERT(0, ("[arm,%d] Unknown CPU Class 0x%x", __LINE__,
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cpu_class));
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}
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int
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pmc_save_kernel_callchain(uintptr_t *cc, int maxsamples,
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struct trapframe *tf)
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{
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(void) cc;
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(void) maxsamples;
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(void) tf;
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return (0);
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}
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int
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pmc_save_user_callchain(uintptr_t *cc, int maxsamples,
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struct trapframe *tf)
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{
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(void) cc;
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(void) maxsamples;
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(void) tf;
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return (0);
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}
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