/*
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* Performance event support - hardware-specific disambiguation
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*
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* For now this is a compile-time decision, but eventually it should be
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* runtime. This would allow multiplatform perf event support for e300 (fsl
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* embedded perf counters) plus server/classic, and would accommodate
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* devices other than the core which provide their own performance counters.
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*
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* Copyright 2010 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifdef CONFIG_PPC_PERF_CTRS
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#include <asm/perf_event_server.h>
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#endif
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#ifdef CONFIG_FSL_EMB_PERF_EVENT
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#include <asm/perf_event_fsl_emb.h>
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#endif
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#ifdef CONFIG_PERF_EVENTS
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#include <asm/ptrace.h>
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#include <asm/reg.h>
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/*
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* Overload regs->result to specify whether we should use the MSR (result
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* is zero) or the SIAR (result is non zero).
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*/
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#define perf_arch_fetch_caller_regs(regs, __ip) \
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do { \
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(regs)->result = 0; \
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(regs)->nip = __ip; \
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(regs)->gpr[1] = current_stack_pointer(); \
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asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \
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} while (0)
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#endif
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