system.hh revision 4762
17584SAli.Saidi@arm.com/* 27584SAli.Saidi@arm.com * Copyright (c) 2004-2006 The Regents of The University of Michigan 37584SAli.Saidi@arm.com * All rights reserved. 47584SAli.Saidi@arm.com * 57584SAli.Saidi@arm.com * Redistribution and use in source and binary forms, with or without 67584SAli.Saidi@arm.com * modification, are permitted provided that the following conditions are 77584SAli.Saidi@arm.com * met: redistributions of source code must retain the above copyright 87584SAli.Saidi@arm.com * notice, this list of conditions and the following disclaimer; 97584SAli.Saidi@arm.com * redistributions in binary form must reproduce the above copyright 107584SAli.Saidi@arm.com * notice, this list of conditions and the following disclaimer in the 117584SAli.Saidi@arm.com * documentation and/or other materials provided with the distribution; 127584SAli.Saidi@arm.com * neither the name of the copyright holders nor the names of its 137584SAli.Saidi@arm.com * contributors may be used to endorse or promote products derived from 147584SAli.Saidi@arm.com * this software without specific prior written permission. 157584SAli.Saidi@arm.com * 167584SAli.Saidi@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 177584SAli.Saidi@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 187584SAli.Saidi@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 197584SAli.Saidi@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 207584SAli.Saidi@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 217584SAli.Saidi@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 227584SAli.Saidi@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 237584SAli.Saidi@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 247584SAli.Saidi@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 257584SAli.Saidi@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 267584SAli.Saidi@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 277584SAli.Saidi@arm.com * 287584SAli.Saidi@arm.com * Authors: Ali Saidi 297584SAli.Saidi@arm.com * Lisa Hsu 307584SAli.Saidi@arm.com * Nathan Binkert 317584SAli.Saidi@arm.com */ 327584SAli.Saidi@arm.com 337584SAli.Saidi@arm.com#ifndef __ARCH_ALPHA_LINUX_SYSTEM_HH__ 347584SAli.Saidi@arm.com#define __ARCH_ALPHA_LINUX_SYSTEM_HH__ 357584SAli.Saidi@arm.com 367584SAli.Saidi@arm.comclass ThreadContext; 377584SAli.Saidi@arm.com 387584SAli.Saidi@arm.comclass BreakPCEvent; 397584SAli.Saidi@arm.comclass IdleStartEvent; 407584SAli.Saidi@arm.com 417584SAli.Saidi@arm.com#include "arch/alpha/idle_event.hh" 427584SAli.Saidi@arm.com#include "arch/alpha/system.hh" 437584SAli.Saidi@arm.com#include "kern/linux/events.hh" 447584SAli.Saidi@arm.com#include "params/LinuxAlphaSystem.hh" 457584SAli.Saidi@arm.com 467584SAli.Saidi@arm.comusing namespace AlphaISA; 477584SAli.Saidi@arm.comusing namespace Linux; 487584SAli.Saidi@arm.com 497584SAli.Saidi@arm.com/** 507584SAli.Saidi@arm.com * This class contains linux specific system code (Loading, Events). 517584SAli.Saidi@arm.com * It points to objects that are the system binaries to load and patches them 527584SAli.Saidi@arm.com * appropriately to work in simulator. 537584SAli.Saidi@arm.com */ 547584SAli.Saidi@arm.comclass LinuxAlphaSystem : public AlphaSystem 557584SAli.Saidi@arm.com{ 567584SAli.Saidi@arm.com private: 579806Sstever@gmail.com class SkipDelayLoopEvent : public SkipFuncEvent 587584SAli.Saidi@arm.com { 597584SAli.Saidi@arm.com public: 607584SAli.Saidi@arm.com SkipDelayLoopEvent(PCEventQueue *q, const std::string &desc, Addr addr) 617584SAli.Saidi@arm.com : SkipFuncEvent(q, desc, addr) {} 627584SAli.Saidi@arm.com virtual void process(ThreadContext *tc); 637584SAli.Saidi@arm.com }; 647584SAli.Saidi@arm.com 657584SAli.Saidi@arm.com class PrintThreadInfo : public PCEvent 667584SAli.Saidi@arm.com { 677584SAli.Saidi@arm.com public: 687584SAli.Saidi@arm.com PrintThreadInfo(PCEventQueue *q, const std::string &desc, Addr addr) 697584SAli.Saidi@arm.com : PCEvent(q, desc, addr) {} 707584SAli.Saidi@arm.com virtual void process(ThreadContext *tc); 717584SAli.Saidi@arm.com }; 727584SAli.Saidi@arm.com 737584SAli.Saidi@arm.com 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 /** Grab the PCBB of the idle process when it starts */ 130 IdleStartEvent *idleStartEvent; 131 132 public: 133 typedef LinuxAlphaSystemParams Params; 134 LinuxAlphaSystem(Params *p); 135 ~LinuxAlphaSystem(); 136 137 void setDelayLoop(ThreadContext *tc); 138}; 139 140#endif // __ARCH_ALPHA_LINUX_SYSTEM_HH__ 141