system.hh revision 1885
1/* 2 * Copyright (c) 2004-2005 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 29#ifndef __KERN_LINUX_LINUX_SYSTEM_HH__ 30#define __KERN_LINUX_LINUX_SYSTEM_HH__ 31 32class ExecContext; 33 34class BreakPCEvent; 35class IdleStartEvent; 36class PrintThreadInfo; 37 38/** 39 * This class contains linux specific system code (Loading, Events, Binning). 40 * It points to objects that are the system binaries to load and patches them 41 * appropriately to work in simulator. 42 */ 43class LinuxSystem : public System 44{ 45 private: 46 class SkipDelayLoopEvent : public SkipFuncEvent 47 { 48 public: 49 SkipDelayLoopEvent(PCEventQueue *q, const std::string &desc, Addr addr) 50 : SkipFuncEvent(q, desc, addr) {} 51 virtual void process(ExecContext *xc); 52 }; 53 54 class DebugPrintkEvent : public SkipFuncEvent 55 { 56 private: 57 bool raw; 58 59 public: 60 DebugPrintkEvent(PCEventQueue *q, const std::string &desc, Addr addr, 61 bool r = false) 62 : SkipFuncEvent(q, desc, addr), raw(r) {} 63 virtual void process(ExecContext *xc); 64 }; 65 66 class PrintThreadInfo : public PCEvent 67 { 68 public: 69 PrintThreadInfo(PCEventQueue *q, const std::string &desc, Addr addr) 70 : PCEvent(q, desc, addr) {} 71 virtual void process(ExecContext *xc); 72 }; 73 74 /** 75 * Addresses defining where the kernel bootloader places various 76 * elements. Details found in include/asm-alpha/system.h 77 */ 78 Addr KernelStart; // Lookup the symbol swapper_pg_dir 79 80 public: 81 Addr InitStack() const { return KernelStart + 0x02000; } 82 Addr EmptyPGT() const { return KernelStart + 0x04000; } 83 Addr EmptyPGE() const { return KernelStart + 0x08000; } 84 Addr ZeroPGE() const { return KernelStart + 0x0A000; } 85 Addr StartAddr() const { return KernelStart + 0x10000; } 86 87 Addr Param() const { return ZeroPGE() + 0x0; } 88 Addr CommandLine() const { return Param() + 0x0; } 89 Addr InitrdStart() const { return Param() + 0x100; } 90 Addr InitrdSize() const { return Param() + 0x108; } 91 static const int CommandLineSize = 256; 92 93 private: 94#ifndef NDEBUG 95 /** Event to halt the simulator if the kernel calls panic() */ 96 BreakPCEvent *kernelPanicEvent; 97 98 /** Event to halt the simulator if the kernel calls die_if_kernel */ 99 BreakPCEvent *kernelDieEvent; 100#endif 101 102 /** 103 * Event to skip determine_cpu_caches() because we don't support 104 * the IPRs that the code can access to figure out cache sizes 105 */ 106 SkipFuncEvent *skipCacheProbeEvent; 107 108 /** PC based event to skip the ide_delay_50ms() call */ 109 SkipFuncEvent *skipIdeDelay50msEvent; 110 111 /** 112 * PC based event to skip the dprink() call and emulate its 113 * functionality 114 */ 115 DebugPrintkEvent *debugPrintkEvent; 116 117 /** 118 * Skip calculate_delay_loop() rather than waiting for this to be 119 * calculated 120 */ 121 SkipDelayLoopEvent *skipDelayLoopEvent; 122 123 /** 124 * Event to print information about thread switches if the trace flag 125 * Thread is set 126 */ 127 PrintThreadInfo *printThreadEvent; 128 129 /** 130 * Event to bin Interrupts seperately from kernel code 131 */ 132 InterruptStartEvent *intStartEvent; 133 134 /** 135 * Event to bin Interrupts seperately from kernel code 136 */ 137 InterruptEndEvent *intEndEvent; 138 InterruptEndEvent *intEndEvent2; 139 InterruptEndEvent *intEndEvent3; 140 141 /** Grab the PCBB of the idle process when it starts */ 142 IdleStartEvent *idleStartEvent; 143 144 public: 145 LinuxSystem(Params *p); 146 ~LinuxSystem(); 147 148 void setDelayLoop(ExecContext *xc); 149}; 150 151#endif // __KERN_LINUX_LINUX_SYSTEM_HH__ 152