1/*
2 * Copyright (c) 2002-2005 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 * Authors: Steve Reinhardt
29 * Nathan Binkert
30 */
31
32#ifndef __CPU_BASE_HH__
33#define __CPU_BASE_HH__
34
35#include <vector>
36
37#include "arch/isa_traits.hh"
38#include "arch/microcode_rom.hh"
39#include "base/statistics.hh"
40#include "config/full_system.hh"
41#include "sim/eventq.hh"
42#include "sim/insttracer.hh"
43#include "mem/mem_object.hh"
44
45#if FULL_SYSTEM
46#include "arch/interrupts.hh"
47#endif
48
49class BaseCPUParams;
50class BranchPred;
51class CheckerCPU;
52class ThreadContext;
53class System;
54class Port;
55
56namespace TheISA
57{
58 class Predecoder;
59}
60
61class CPUProgressEvent : public Event
62{
63 protected:
64 Tick interval;
65 Counter lastNumInst;
66 BaseCPU *cpu;
67
68 public:
69 CPUProgressEvent(BaseCPU *_cpu, Tick ival);
70
71 void process();
72
73 virtual const char *description() const;
74};
75
76class BaseCPU : public MemObject
77{
78 protected:
79 // CPU's clock period in terms of the number of ticks of curTime.
80 Tick clock;
81 // @todo remove me after debugging with legion done
82 Tick instCnt;
| 1/*
2 * Copyright (c) 2002-2005 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 * Authors: Steve Reinhardt
29 * Nathan Binkert
30 */
31
32#ifndef __CPU_BASE_HH__
33#define __CPU_BASE_HH__
34
35#include <vector>
36
37#include "arch/isa_traits.hh"
38#include "arch/microcode_rom.hh"
39#include "base/statistics.hh"
40#include "config/full_system.hh"
41#include "sim/eventq.hh"
42#include "sim/insttracer.hh"
43#include "mem/mem_object.hh"
44
45#if FULL_SYSTEM
46#include "arch/interrupts.hh"
47#endif
48
49class BaseCPUParams;
50class BranchPred;
51class CheckerCPU;
52class ThreadContext;
53class System;
54class Port;
55
56namespace TheISA
57{
58 class Predecoder;
59}
60
61class CPUProgressEvent : public Event
62{
63 protected:
64 Tick interval;
65 Counter lastNumInst;
66 BaseCPU *cpu;
67
68 public:
69 CPUProgressEvent(BaseCPU *_cpu, Tick ival);
70
71 void process();
72
73 virtual const char *description() const;
74};
75
76class BaseCPU : public MemObject
77{
78 protected:
79 // CPU's clock period in terms of the number of ticks of curTime.
80 Tick clock;
81 // @todo remove me after debugging with legion done
82 Tick instCnt;
|
85// Tick currentTick;
86 inline Tick frequency() const { return Clock::Frequency / clock; }
87 inline Tick ticks(int numCycles) const { return clock * numCycles; }
88 inline Tick curCycle() const { return curTick / clock; }
89 inline Tick tickToCycles(Tick val) const { return val / clock; }
90 // @todo remove me after debugging with legion done
91 Tick instCount() { return instCnt; }
92
93 /** The next cycle the CPU should be scheduled, given a cache
94 * access or quiesce event returning on this cycle. This function
95 * may return curTick if the CPU should run on the current cycle.
96 */
97 Tick nextCycle();
98
99 /** The next cycle the CPU should be scheduled, given a cache
100 * access or quiesce event returning on the given Tick. This
101 * function may return curTick if the CPU should run on the
102 * current cycle.
103 * @param begin_tick The tick that the event is completing on.
104 */
105 Tick nextCycle(Tick begin_tick);
106
107 TheISA::MicrocodeRom microcodeRom;
108
109#if FULL_SYSTEM
110 protected:
111 TheISA::Interrupts *interrupts;
112
113 public:
114 TheISA::Interrupts *
115 getInterruptController()
116 {
117 return interrupts;
118 }
119
120 virtual void postInterrupt(int int_num, int index);
121 virtual void clearInterrupt(int int_num, int index);
122 virtual void clearInterrupts();
123
124 bool
125 checkInterrupts(ThreadContext *tc) const
126 {
127 return interrupts->checkInterrupts(tc);
128 }
129
130 class ProfileEvent : public Event
131 {
132 private:
133 BaseCPU *cpu;
134 Tick interval;
135
136 public:
137 ProfileEvent(BaseCPU *cpu, Tick interval);
138 void process();
139 };
140 ProfileEvent *profileEvent;
141#endif
142
143 protected:
144 std::vector<ThreadContext *> threadContexts;
145 std::vector<TheISA::Predecoder *> predecoders;
146
147 Trace::InstTracer * tracer;
148
149 public:
150
151 /// Provide access to the tracer pointer
152 Trace::InstTracer * getTracer() { return tracer; }
153
154 /// Notify the CPU that the indicated context is now active. The
155 /// delay parameter indicates the number of ticks to wait before
156 /// executing (typically 0 or 1).
157 virtual void activateContext(int thread_num, int delay) {}
158
159 /// Notify the CPU that the indicated context is now suspended.
160 virtual void suspendContext(int thread_num) {}
161
162 /// Notify the CPU that the indicated context is now deallocated.
163 virtual void deallocateContext(int thread_num) {}
164
165 /// Notify the CPU that the indicated context is now halted.
166 virtual void haltContext(int thread_num) {}
167
168 /// Given a Thread Context pointer return the thread num
169 int findContext(ThreadContext *tc);
170
171 /// Given a thread num get tho thread context for it
172 ThreadContext *getContext(int tn) { return threadContexts[tn]; }
173
174 public:
175 typedef BaseCPUParams Params;
176 const Params *params() const
177 { return reinterpret_cast<const Params *>(_params); }
178 BaseCPU(Params *params);
179 virtual ~BaseCPU();
180
181 virtual void init();
182 virtual void startup();
183 virtual void regStats();
184
185 virtual void activateWhenReady(int tid) {};
186
187 void registerThreadContexts();
188
189 /// Prepare for another CPU to take over execution. When it is
190 /// is ready (drained pipe) it signals the sampler.
191 virtual void switchOut();
192
193 /// Take over execution from the given CPU. Used for warm-up and
194 /// sampling.
195 virtual void takeOverFrom(BaseCPU *, Port *ic, Port *dc);
196
197 /**
198 * Number of threads we're actually simulating (<= SMT_MAX_THREADS).
199 * This is a constant for the duration of the simulation.
200 */
201 int number_of_threads;
202
203 TheISA::CoreSpecific coreParams; //ISA-Specific Params That Set Up State in Core
204
205 /**
206 * Vector of per-thread instruction-based event queues. Used for
207 * scheduling events based on number of instructions committed by
208 * a particular thread.
209 */
210 EventQueue **comInstEventQueue;
211
212 /**
213 * Vector of per-thread load-based event queues. Used for
214 * scheduling events based on number of loads committed by
215 *a particular thread.
216 */
217 EventQueue **comLoadEventQueue;
218
219 System *system;
220
221 Tick phase;
222
223#if FULL_SYSTEM
224 /**
225 * Serialize this object to the given output stream.
226 * @param os The stream to serialize to.
227 */
228 virtual void serialize(std::ostream &os);
229
230 /**
231 * Reconstruct the state of this object from a checkpoint.
232 * @param cp The checkpoint use.
233 * @param section The section name of this object
234 */
235 virtual void unserialize(Checkpoint *cp, const std::string §ion);
236
237#endif
238
239 /**
240 * Return pointer to CPU's branch predictor (NULL if none).
241 * @return Branch predictor pointer.
242 */
243 virtual BranchPred *getBranchPred() { return NULL; };
244
245 virtual Counter totalInstructions() const { return 0; }
246
247 // Function tracing
248 private:
249 bool functionTracingEnabled;
250 std::ostream *functionTraceStream;
251 Addr currentFunctionStart;
252 Addr currentFunctionEnd;
253 Tick functionEntryTick;
254 void enableFunctionTrace();
255 void traceFunctionsInternal(Addr pc);
256
257 protected:
258 void traceFunctions(Addr pc)
259 {
260 if (functionTracingEnabled)
261 traceFunctionsInternal(pc);
262 }
263
264 private:
265 static std::vector<BaseCPU *> cpuList; //!< Static global cpu list
266
267 public:
268 static int numSimulatedCPUs() { return cpuList.size(); }
269 static Counter numSimulatedInstructions()
270 {
271 Counter total = 0;
272
273 int size = cpuList.size();
274 for (int i = 0; i < size; ++i)
275 total += cpuList[i]->totalInstructions();
276
277 return total;
278 }
279
280 public:
281 // Number of CPU cycles simulated
282 Stats::Scalar<> numCycles;
283};
284
285#endif // __CPU_BASE_HH__
| 93// Tick currentTick;
94 inline Tick frequency() const { return Clock::Frequency / clock; }
95 inline Tick ticks(int numCycles) const { return clock * numCycles; }
96 inline Tick curCycle() const { return curTick / clock; }
97 inline Tick tickToCycles(Tick val) const { return val / clock; }
98 // @todo remove me after debugging with legion done
99 Tick instCount() { return instCnt; }
100
101 /** The next cycle the CPU should be scheduled, given a cache
102 * access or quiesce event returning on this cycle. This function
103 * may return curTick if the CPU should run on the current cycle.
104 */
105 Tick nextCycle();
106
107 /** The next cycle the CPU should be scheduled, given a cache
108 * access or quiesce event returning on the given Tick. This
109 * function may return curTick if the CPU should run on the
110 * current cycle.
111 * @param begin_tick The tick that the event is completing on.
112 */
113 Tick nextCycle(Tick begin_tick);
114
115 TheISA::MicrocodeRom microcodeRom;
116
117#if FULL_SYSTEM
118 protected:
119 TheISA::Interrupts *interrupts;
120
121 public:
122 TheISA::Interrupts *
123 getInterruptController()
124 {
125 return interrupts;
126 }
127
128 virtual void postInterrupt(int int_num, int index);
129 virtual void clearInterrupt(int int_num, int index);
130 virtual void clearInterrupts();
131
132 bool
133 checkInterrupts(ThreadContext *tc) const
134 {
135 return interrupts->checkInterrupts(tc);
136 }
137
138 class ProfileEvent : public Event
139 {
140 private:
141 BaseCPU *cpu;
142 Tick interval;
143
144 public:
145 ProfileEvent(BaseCPU *cpu, Tick interval);
146 void process();
147 };
148 ProfileEvent *profileEvent;
149#endif
150
151 protected:
152 std::vector<ThreadContext *> threadContexts;
153 std::vector<TheISA::Predecoder *> predecoders;
154
155 Trace::InstTracer * tracer;
156
157 public:
158
159 /// Provide access to the tracer pointer
160 Trace::InstTracer * getTracer() { return tracer; }
161
162 /// Notify the CPU that the indicated context is now active. The
163 /// delay parameter indicates the number of ticks to wait before
164 /// executing (typically 0 or 1).
165 virtual void activateContext(int thread_num, int delay) {}
166
167 /// Notify the CPU that the indicated context is now suspended.
168 virtual void suspendContext(int thread_num) {}
169
170 /// Notify the CPU that the indicated context is now deallocated.
171 virtual void deallocateContext(int thread_num) {}
172
173 /// Notify the CPU that the indicated context is now halted.
174 virtual void haltContext(int thread_num) {}
175
176 /// Given a Thread Context pointer return the thread num
177 int findContext(ThreadContext *tc);
178
179 /// Given a thread num get tho thread context for it
180 ThreadContext *getContext(int tn) { return threadContexts[tn]; }
181
182 public:
183 typedef BaseCPUParams Params;
184 const Params *params() const
185 { return reinterpret_cast<const Params *>(_params); }
186 BaseCPU(Params *params);
187 virtual ~BaseCPU();
188
189 virtual void init();
190 virtual void startup();
191 virtual void regStats();
192
193 virtual void activateWhenReady(int tid) {};
194
195 void registerThreadContexts();
196
197 /// Prepare for another CPU to take over execution. When it is
198 /// is ready (drained pipe) it signals the sampler.
199 virtual void switchOut();
200
201 /// Take over execution from the given CPU. Used for warm-up and
202 /// sampling.
203 virtual void takeOverFrom(BaseCPU *, Port *ic, Port *dc);
204
205 /**
206 * Number of threads we're actually simulating (<= SMT_MAX_THREADS).
207 * This is a constant for the duration of the simulation.
208 */
209 int number_of_threads;
210
211 TheISA::CoreSpecific coreParams; //ISA-Specific Params That Set Up State in Core
212
213 /**
214 * Vector of per-thread instruction-based event queues. Used for
215 * scheduling events based on number of instructions committed by
216 * a particular thread.
217 */
218 EventQueue **comInstEventQueue;
219
220 /**
221 * Vector of per-thread load-based event queues. Used for
222 * scheduling events based on number of loads committed by
223 *a particular thread.
224 */
225 EventQueue **comLoadEventQueue;
226
227 System *system;
228
229 Tick phase;
230
231#if FULL_SYSTEM
232 /**
233 * Serialize this object to the given output stream.
234 * @param os The stream to serialize to.
235 */
236 virtual void serialize(std::ostream &os);
237
238 /**
239 * Reconstruct the state of this object from a checkpoint.
240 * @param cp The checkpoint use.
241 * @param section The section name of this object
242 */
243 virtual void unserialize(Checkpoint *cp, const std::string §ion);
244
245#endif
246
247 /**
248 * Return pointer to CPU's branch predictor (NULL if none).
249 * @return Branch predictor pointer.
250 */
251 virtual BranchPred *getBranchPred() { return NULL; };
252
253 virtual Counter totalInstructions() const { return 0; }
254
255 // Function tracing
256 private:
257 bool functionTracingEnabled;
258 std::ostream *functionTraceStream;
259 Addr currentFunctionStart;
260 Addr currentFunctionEnd;
261 Tick functionEntryTick;
262 void enableFunctionTrace();
263 void traceFunctionsInternal(Addr pc);
264
265 protected:
266 void traceFunctions(Addr pc)
267 {
268 if (functionTracingEnabled)
269 traceFunctionsInternal(pc);
270 }
271
272 private:
273 static std::vector<BaseCPU *> cpuList; //!< Static global cpu list
274
275 public:
276 static int numSimulatedCPUs() { return cpuList.size(); }
277 static Counter numSimulatedInstructions()
278 {
279 Counter total = 0;
280
281 int size = cpuList.size();
282 for (int i = 0; i < size; ++i)
283 total += cpuList[i]->totalInstructions();
284
285 return total;
286 }
287
288 public:
289 // Number of CPU cycles simulated
290 Stats::Scalar<> numCycles;
291};
292
293#endif // __CPU_BASE_HH__
|