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 "base/statistics.hh"
38#include "config/full_system.hh"
39#include "sim/eventq.hh"
40#include "mem/mem_object.hh"
41#include "arch/isa_traits.hh"
42
| 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 "base/statistics.hh"
38#include "config/full_system.hh"
39#include "sim/eventq.hh"
40#include "mem/mem_object.hh"
41#include "arch/isa_traits.hh"
42
|
| 43#if FULL_SYSTEM
44#include "arch/interrupts.hh"
45#endif
46
|
43class BranchPred;
44class CheckerCPU;
45class ThreadContext;
46class System;
47class Port;
48
49class CPUProgressEvent : public Event
50{
51 protected:
52 Tick interval;
53 Counter lastNumInst;
54 BaseCPU *cpu;
55
56 public:
57 CPUProgressEvent(EventQueue *q, Tick ival, BaseCPU *_cpu);
58
59 void process();
60
61 virtual const char *description();
62};
63
64class BaseCPU : public MemObject
65{
66 protected:
67 // CPU's clock period in terms of the number of ticks of curTime.
68 Tick clock;
69
70 public:
71// Tick currentTick;
72 inline Tick frequency() const { return Clock::Frequency / clock; }
73 inline Tick cycles(int numCycles) const { return clock * numCycles; }
74 inline Tick curCycle() const { return curTick / clock; }
75
| 47class BranchPred;
48class CheckerCPU;
49class ThreadContext;
50class System;
51class Port;
52
53class CPUProgressEvent : public Event
54{
55 protected:
56 Tick interval;
57 Counter lastNumInst;
58 BaseCPU *cpu;
59
60 public:
61 CPUProgressEvent(EventQueue *q, Tick ival, BaseCPU *_cpu);
62
63 void process();
64
65 virtual const char *description();
66};
67
68class BaseCPU : public MemObject
69{
70 protected:
71 // CPU's clock period in terms of the number of ticks of curTime.
72 Tick clock;
73
74 public:
75// Tick currentTick;
76 inline Tick frequency() const { return Clock::Frequency / clock; }
77 inline Tick cycles(int numCycles) const { return clock * numCycles; }
78 inline Tick curCycle() const { return curTick / clock; }
79
|
76 /** The next cycle the CPU should be scheduled, given a cache
77 * access or quiesce event returning on this cycle. This function
78 * may return curTick if the CPU should run on the current cycle.
79 */
80 Tick nextCycle();
81
82 /** The next cycle the CPU should be scheduled, given a cache
83 * access or quiesce event returning on the given Tick. This
84 * function may return curTick if the CPU should run on the
85 * current cycle.
86 * @param begin_tick The tick that the event is completing on.
87 */
88 Tick nextCycle(Tick begin_tick);
89
| |
90#if FULL_SYSTEM
91 protected:
| 80#if FULL_SYSTEM
81 protected:
|
92 uint64_t interrupts[TheISA::NumInterruptLevels];
93 uint64_t intstatus;
| 82// uint64_t interrupts[TheISA::NumInterruptLevels];
83// uint64_t intstatus;
84 TheISA::Interrupts interrupts;
|
94
95 public:
96 virtual void post_interrupt(int int_num, int index);
97 virtual void clear_interrupt(int int_num, int index);
98 virtual void clear_interrupts();
99 bool checkInterrupts;
100
101 bool check_interrupt(int int_num) const {
| 85
86 public:
87 virtual void post_interrupt(int int_num, int index);
88 virtual void clear_interrupt(int int_num, int index);
89 virtual void clear_interrupts();
90 bool checkInterrupts;
91
92 bool check_interrupt(int int_num) const {
|
102 if (int_num > TheISA::NumInterruptLevels)
103 panic("int_num out of bounds\n");
104
105 return interrupts[int_num] != 0;
| 93 return interrupts.check_interrupt(int_num);
|
106 }
107
| 94 }
95
|
108 bool check_interrupts() const { return intstatus != 0; }
109 uint64_t intr_status() const { return intstatus; }
| 96 bool check_interrupts() const { return interrupts.check_interrupts(); }
97 //uint64_t intr_status() const { return interrupts.intr_status(); }
|
110
111 class ProfileEvent : public Event
112 {
113 private:
114 BaseCPU *cpu;
115 int interval;
116
117 public:
118 ProfileEvent(BaseCPU *cpu, int interval);
119 void process();
120 };
121 ProfileEvent *profileEvent;
122#endif
123
124 protected:
125 std::vector<ThreadContext *> threadContexts;
126
127 public:
128
129 /// Notify the CPU that the indicated context is now active. The
130 /// delay parameter indicates the number of ticks to wait before
131 /// executing (typically 0 or 1).
132 virtual void activateContext(int thread_num, int delay) {}
133
134 /// Notify the CPU that the indicated context is now suspended.
135 virtual void suspendContext(int thread_num) {}
136
137 /// Notify the CPU that the indicated context is now deallocated.
138 virtual void deallocateContext(int thread_num) {}
139
140 /// Notify the CPU that the indicated context is now halted.
141 virtual void haltContext(int thread_num) {}
142
143 public:
144 struct Params
145 {
146 std::string name;
147 int numberOfThreads;
148 bool deferRegistration;
149 Counter max_insts_any_thread;
150 Counter max_insts_all_threads;
151 Counter max_loads_any_thread;
152 Counter max_loads_all_threads;
153 Tick clock;
154 bool functionTrace;
155 Tick functionTraceStart;
156 System *system;
157 int cpu_id;
158#if FULL_SYSTEM
159 Tick profile;
160#endif
161 Tick progress_interval;
162 BaseCPU *checker;
163
164 Params();
165 };
166
167 const Params *params;
168
169 BaseCPU(Params *params);
170 virtual ~BaseCPU();
171
172 virtual void init();
173 virtual void startup();
174 virtual void regStats();
175
176 virtual void activateWhenReady(int tid) {};
177
178 void registerThreadContexts();
179
180 /// Prepare for another CPU to take over execution. When it is
181 /// is ready (drained pipe) it signals the sampler.
182 virtual void switchOut();
183
184 /// Take over execution from the given CPU. Used for warm-up and
185 /// sampling.
186 virtual void takeOverFrom(BaseCPU *);
187
188 /**
189 * Number of threads we're actually simulating (<= SMT_MAX_THREADS).
190 * This is a constant for the duration of the simulation.
191 */
192 int number_of_threads;
193
194 /**
195 * Vector of per-thread instruction-based event queues. Used for
196 * scheduling events based on number of instructions committed by
197 * a particular thread.
198 */
199 EventQueue **comInstEventQueue;
200
201 /**
202 * Vector of per-thread load-based event queues. Used for
203 * scheduling events based on number of loads committed by
204 *a particular thread.
205 */
206 EventQueue **comLoadEventQueue;
207
208 System *system;
209
210#if FULL_SYSTEM
211 /**
212 * Serialize this object to the given output stream.
213 * @param os The stream to serialize to.
214 */
215 virtual void serialize(std::ostream &os);
216
217 /**
218 * Reconstruct the state of this object from a checkpoint.
219 * @param cp The checkpoint use.
220 * @param section The section name of this object
221 */
222 virtual void unserialize(Checkpoint *cp, const std::string §ion);
223
224#endif
225
226 /**
227 * Return pointer to CPU's branch predictor (NULL if none).
228 * @return Branch predictor pointer.
229 */
230 virtual BranchPred *getBranchPred() { return NULL; };
231
232 virtual Counter totalInstructions() const { return 0; }
233
234 // Function tracing
235 private:
236 bool functionTracingEnabled;
237 std::ostream *functionTraceStream;
238 Addr currentFunctionStart;
239 Addr currentFunctionEnd;
240 Tick functionEntryTick;
241 void enableFunctionTrace();
242 void traceFunctionsInternal(Addr pc);
243
244 protected:
245 void traceFunctions(Addr pc)
246 {
247 if (functionTracingEnabled)
248 traceFunctionsInternal(pc);
249 }
250
251 private:
252 static std::vector<BaseCPU *> cpuList; //!< Static global cpu list
253
254 public:
255 static int numSimulatedCPUs() { return cpuList.size(); }
256 static Counter numSimulatedInstructions()
257 {
258 Counter total = 0;
259
260 int size = cpuList.size();
261 for (int i = 0; i < size; ++i)
262 total += cpuList[i]->totalInstructions();
263
264 return total;
265 }
266
267 public:
268 // Number of CPU cycles simulated
269 Stats::Scalar<> numCycles;
270};
271
272#endif // __CPU_BASE_HH__
| 98
99 class ProfileEvent : public Event
100 {
101 private:
102 BaseCPU *cpu;
103 int interval;
104
105 public:
106 ProfileEvent(BaseCPU *cpu, int interval);
107 void process();
108 };
109 ProfileEvent *profileEvent;
110#endif
111
112 protected:
113 std::vector<ThreadContext *> threadContexts;
114
115 public:
116
117 /// Notify the CPU that the indicated context is now active. The
118 /// delay parameter indicates the number of ticks to wait before
119 /// executing (typically 0 or 1).
120 virtual void activateContext(int thread_num, int delay) {}
121
122 /// Notify the CPU that the indicated context is now suspended.
123 virtual void suspendContext(int thread_num) {}
124
125 /// Notify the CPU that the indicated context is now deallocated.
126 virtual void deallocateContext(int thread_num) {}
127
128 /// Notify the CPU that the indicated context is now halted.
129 virtual void haltContext(int thread_num) {}
130
131 public:
132 struct Params
133 {
134 std::string name;
135 int numberOfThreads;
136 bool deferRegistration;
137 Counter max_insts_any_thread;
138 Counter max_insts_all_threads;
139 Counter max_loads_any_thread;
140 Counter max_loads_all_threads;
141 Tick clock;
142 bool functionTrace;
143 Tick functionTraceStart;
144 System *system;
145 int cpu_id;
146#if FULL_SYSTEM
147 Tick profile;
148#endif
149 Tick progress_interval;
150 BaseCPU *checker;
151
152 Params();
153 };
154
155 const Params *params;
156
157 BaseCPU(Params *params);
158 virtual ~BaseCPU();
159
160 virtual void init();
161 virtual void startup();
162 virtual void regStats();
163
164 virtual void activateWhenReady(int tid) {};
165
166 void registerThreadContexts();
167
168 /// Prepare for another CPU to take over execution. When it is
169 /// is ready (drained pipe) it signals the sampler.
170 virtual void switchOut();
171
172 /// Take over execution from the given CPU. Used for warm-up and
173 /// sampling.
174 virtual void takeOverFrom(BaseCPU *);
175
176 /**
177 * Number of threads we're actually simulating (<= SMT_MAX_THREADS).
178 * This is a constant for the duration of the simulation.
179 */
180 int number_of_threads;
181
182 /**
183 * Vector of per-thread instruction-based event queues. Used for
184 * scheduling events based on number of instructions committed by
185 * a particular thread.
186 */
187 EventQueue **comInstEventQueue;
188
189 /**
190 * Vector of per-thread load-based event queues. Used for
191 * scheduling events based on number of loads committed by
192 *a particular thread.
193 */
194 EventQueue **comLoadEventQueue;
195
196 System *system;
197
198#if FULL_SYSTEM
199 /**
200 * Serialize this object to the given output stream.
201 * @param os The stream to serialize to.
202 */
203 virtual void serialize(std::ostream &os);
204
205 /**
206 * Reconstruct the state of this object from a checkpoint.
207 * @param cp The checkpoint use.
208 * @param section The section name of this object
209 */
210 virtual void unserialize(Checkpoint *cp, const std::string §ion);
211
212#endif
213
214 /**
215 * Return pointer to CPU's branch predictor (NULL if none).
216 * @return Branch predictor pointer.
217 */
218 virtual BranchPred *getBranchPred() { return NULL; };
219
220 virtual Counter totalInstructions() const { return 0; }
221
222 // Function tracing
223 private:
224 bool functionTracingEnabled;
225 std::ostream *functionTraceStream;
226 Addr currentFunctionStart;
227 Addr currentFunctionEnd;
228 Tick functionEntryTick;
229 void enableFunctionTrace();
230 void traceFunctionsInternal(Addr pc);
231
232 protected:
233 void traceFunctions(Addr pc)
234 {
235 if (functionTracingEnabled)
236 traceFunctionsInternal(pc);
237 }
238
239 private:
240 static std::vector<BaseCPU *> cpuList; //!< Static global cpu list
241
242 public:
243 static int numSimulatedCPUs() { return cpuList.size(); }
244 static Counter numSimulatedInstructions()
245 {
246 Counter total = 0;
247
248 int size = cpuList.size();
249 for (int i = 0; i < size; ++i)
250 total += cpuList[i]->totalInstructions();
251
252 return total;
253 }
254
255 public:
256 // Number of CPU cycles simulated
257 Stats::Scalar<> numCycles;
258};
259
260#endif // __CPU_BASE_HH__
|