events.hh revision 8143:b0b94a7b7c1f
1/* 2 * Copyright (c) 2004-2006 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 * Ali Saidi 30 */ 31 32#ifndef __KERN_LINUX_EVENTS_HH__ 33#define __KERN_LINUX_EVENTS_HH__ 34 35#include "kern/system_events.hh" 36 37namespace Linux { 38 39class DebugPrintkEvent : public SkipFuncEvent 40{ 41 public: 42 DebugPrintkEvent(PCEventQueue *q, const std::string &desc, Addr addr) 43 : SkipFuncEvent(q, desc, addr) {} 44 virtual void process(ThreadContext *xc); 45}; 46 47/** A class to skip udelay() and related calls in the kernel. 48 * This class has two additional parameters that take the argument to udelay and 49 * manipulated it to come up with ns and eventually ticks to quiesce for. 50 * See descriptions of argDivToNs and argMultToNs below. 51 */ 52class UDelayEvent : public SkipFuncEvent 53{ 54 private: 55 /** value to divide arg by to create ns. This is present beacues the linux 56 * kernel code sometime precomputes the first multiply that is done in 57 * udelay() if the parameter is a constant. We need to undo it so here is 58 * how. */ 59 uint64_t argDivToNs; 60 61 /** value to multiple arg by to create ns. Nominally, this is 1000 to 62 * convert us to ns, but since linux can do some preprocessing of constant 63 * values something else might be required. */ 64 uint64_t argMultToNs; 65 66 public: 67 UDelayEvent(PCEventQueue *q, const std::string &desc, Addr addr, 68 uint64_t mult, uint64_t div) 69 : SkipFuncEvent(q, desc, addr), argDivToNs(div), argMultToNs(mult) {} 70 virtual void process(ThreadContext *xc); 71}; 72 73 74} 75 76#endif 77