8d1e3b2ac1
implemented important CPU statistics which were used for Bochs CPU model performance analysis. old statistics code from paging.cc and cpu.cc is replaced with new infrastructure. In order to enale statitics collection in Bochs CPU: - Enable statistics @ compilation time in cpu/cpustats.h - Dump statistics periodically by adding -dumpstats N into Bochs command line
98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2014 Stanislav Shwartsman
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// Written by Stanislav Shwartsman [sshwarts at sourceforge net]
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
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//
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/////////////////////////////////////////////////////////////////////////
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#ifndef BX_CPUSTATS_H
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#define BX_CPUSTATS_H
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#define InstrumentICACHE 0
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#define InstrumentTLB 0
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#define InstrumentTLBFlush 0
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#define InstrumentStackPrefetch 0
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#define InstrumentSMC 0
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// indicate if any of the CPU statistics was compiled in
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#define InstrumentCPU (InstrumentICACHE + InstrumentTLB + InstrumentTLBFlush + InstrumentStackPrefetch + InstrumentSMC)
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struct bx_cpu_statistics
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{
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// icache statistics
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Bit64u iCacheLookups;
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Bit64u iCachePrefetch;
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Bit64u iCacheMisses;
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// tlb lookup statistics
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Bit64u tlbLookups;
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Bit64u tlbMisses;
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// tlb flush statistics
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Bit64u tlbGlobalFlushes;
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Bit64u tlbNonGlobalFlushes;
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// stack prefetch statistics
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Bit64u stackPrefetch;
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// self modifying code statistics
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Bit64u smc;
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bx_cpu_statistics():
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iCacheLookups(0), iCachePrefetch(0), iCacheMisses(0),
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tlbLookups(0), tlbMisses(0),
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tlbGlobalFlushes(0), tlbNonGlobalFlushes(0),
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stackPrefetch(0), smc(0) {}
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};
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#define INC_CPU_STAT(stat) INC_STAT(BX_CPU_THIS_PTR stats -> stat)
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#if InstrumentICACHE
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#define INC_ICACHE_STAT(stat) INC_CPU_STAT(stat)
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#else
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#define INC_ICACHE_STAT(stat)
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#endif
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#if InstrumentTLBFlush
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#define INC_TLBFLUSH_STAT(stat) INC_CPU_STAT(stat)
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#else
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#define INC_TLBFLUSH_STAT(stat)
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#endif
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#if InstrumentTLB
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#define INC_TLB_STAT(stat) INC_CPU_STAT(stat)
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#else
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#define INC_TLB_STAT(stat)
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#endif
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#if InstrumentStackPrefetch
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#define INC_STACK_PREFETCH_STAT(stat) INC_CPU_STAT(stat)
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#else
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#define INC_STACK_PREFETCH_STAT(stat)
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#endif
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#if InstrumentSMC
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#define INC_SMC_STAT(stat) INC_CPU_STAT(stat)
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#else
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#define INC_SMC_STAT(stat)
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#endif
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#endif
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