f85aa85895
Use ELR register value instead of LR for PMC_TRAPFRAME_TO_PC macro since it's the former that indicates PC if the interrupted execution thread. This fixes a bug where pmcstat lost the leaf function of the call chain and started with the second function in the chain. Although this change is an improvement over the previous logic there is still posibility for incomplete data: if the leaf function does not have stack variables and does not call any other functions compiler would not generate a stack frame for it and the FP value would point to the caller's frame, so instead of the actual "caller1 -> caller2 -> leaf" chain only "caller1 -> leaf" would be captured. Sponsored by: Ampere Computing Submitted by: Klara, Inc.
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*-
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* Copyright (c) 2009 Rui Paulo <rpaulo@FreeBSD.org>
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PMC_MDEP_H_
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#define _MACHINE_PMC_MDEP_H_
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#define PMC_MDEP_CLASS_INDEX_ARMV8 1
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/*
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* On the ARMv8 platform we support the following PMCs.
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*
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* ARMV8 ARM Cortex-A53/57/72 processors
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*/
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#include <dev/hwpmc/hwpmc_arm64.h>
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union pmc_md_op_pmcallocate {
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uint64_t __pad[4];
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};
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/* Logging */
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#define PMCLOG_READADDR PMCLOG_READ64
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#define PMCLOG_EMITADDR PMCLOG_EMIT64
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#ifdef _KERNEL
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union pmc_md_pmc {
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struct pmc_md_arm64_pmc pm_arm64;
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};
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#define PMC_IN_KERNEL_STACK(S,START,END) \
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((S) >= (START) && (S) < (END))
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#define PMC_IN_KERNEL(va) INKERNEL((va))
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#define PMC_IN_USERSPACE(va) ((va) <= VM_MAXUSER_ADDRESS)
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#define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_elr)
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#define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_x[29])
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/*
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* Prototypes
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*/
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struct pmc_mdep *pmc_arm64_initialize(void);
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void pmc_arm64_finalize(struct pmc_mdep *_md);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PMC_MDEP_H_ */
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