1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * Copyright (c) 2011 Regents of the University of California
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;

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39#include <vector>
40
41#include "base/loader/symtab.hh"
42#include "base/misc.hh"
43#include "base/statistics.hh"
44#include "config/full_system.hh"
45#include "cpu/pc_event.hh"
46#include "enums/MemoryMode.hh"
47#include "mem/port.hh"
48#include "params/System.hh"
49#include "sim/sim_object.hh"
50
51#if FULL_SYSTEM
52#include "kern/system_events.hh"
53#endif
54
55class BaseCPU;
56class ThreadContext;
57class ObjectFile;
58class PhysicalMemory;
59
60#if FULL_SYSTEM
61class Platform;
62class FunctionalPort;
63class VirtualPort;
64#endif
65class GDBListener;
66class BaseRemoteGDB;
67
68class System : public SimObject
69{
70 public:
71
72 static const char *MemoryModeStrings[3];
73
74 Enums::MemoryMode
75 getMemoryMode()
76 {
77 assert(memoryMode);
78 return memoryMode;
79 }

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109 AddrRangeList memRanges;
110
111 /** check if an address points to valid system memory
112 * and thus we can fetch instructions out of it
113 */
114 bool isMemory(const Addr addr) const;
115
116#if FULL_SYSTEM
117 uint64_t init_param;
118
119 /** Port to physical memory used for writing object files into ram at
120 * boot.*/
121 FunctionalPort *functionalPort;
122 VirtualPort *virtPort;
123
124 /** kernel symbol table */
125 SymbolTable *kernelSymtab;
126
127 /** Object pointer for the kernel code */
128 ObjectFile *kernel;
129
130 /** Begining of kernel code */

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165
166
167#endif // FULL_SYSTEM
168
169 protected:
170 Enums::MemoryMode memoryMode;
171 uint64_t workItemsBegin;
172 uint64_t workItemsEnd;
173 std::vector<bool> activeCpus;
174
175 public:
176 /**
177 * Called by pseudo_inst to track the number of work items started by this
178 * system.
179 */
180 uint64_t
181 incWorkItemsBegin()
182 {
183 return ++workItemsBegin;
184 }
185
186 /**
187 * Called by pseudo_inst to track the number of work items completed by
188 * this system.

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206 activeCpus[index] = true;
207 for (std::vector<bool>::iterator i = activeCpus.begin();
208 i < activeCpus.end(); i++) {
209 if (*i) count++;
210 }
211 return count;
212 }
213
214#if FULL_SYSTEM
215 /**
216 * Fix up an address used to match PCs for hooking simulator
217 * events on to target function executions. See comment in
218 * system.cc for details.
219 */
220 virtual Addr fixFuncEventAddr(Addr addr) = 0;
221

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281 /**
282 * Returns the addess the entry point to the kernel code.
283 * @return entry point of the kernel code
284 */
285 Addr getKernelEntry() const { return kernelEntry; }
286
287#else
288
289 Addr new_page();
290
291#endif // FULL_SYSTEM
292
293 int registerThreadContext(ThreadContext *tc, int assigned=-1);
294 void replaceThreadContext(ThreadContext *tc, int context_id);
295
296 void serialize(std::ostream &os);
297 void unserialize(Checkpoint *cp, const std::string &section);
298 virtual void resume();
299
300 public:
301 Counter totalNumInsts;
302 EventQueue instEventQueue;
303
304 ////////////////////////////////////////////
305 //
306 // STATIC GLOBAL SYSTEM LIST
307 //
308 ////////////////////////////////////////////
309
310 static std::vector<System *> systemList;
311 static int numSystemsRunning;
312
313 static void printSystems();
314
315
316};
317
318#endif // __SYSTEM_HH__