1/*
2 * Copyright (c) 2001-2006 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_SIMPLE_THREAD_HH__
33#define __CPU_SIMPLE_THREAD_HH__
34
35#include "arch/isa_traits.hh"
36#include "arch/regfile.hh"
37#include "arch/syscallreturn.hh"
38#include "config/full_system.hh"
39#include "cpu/thread_context.hh"
40#include "cpu/thread_state.hh"
41#include "mem/request.hh"
42#include "sim/byteswap.hh"
43#include "sim/eventq.hh"
44#include "sim/host.hh"
45#include "sim/serialize.hh"
46
47class BaseCPU;
48
49#if FULL_SYSTEM
50
51#include "sim/system.hh"
52#include "arch/tlb.hh"
53
54class FunctionProfile;
55class ProfileNode;
56class FunctionalPort;
57class PhysicalPort;
58
59namespace TheISA {
60 namespace Kernel {
61 class Statistics;
62 };
63};
64
65#else // !FULL_SYSTEM
66
67#include "sim/process.hh"
68#include "mem/page_table.hh"
69class TranslatingPort;
70
71#endif // FULL_SYSTEM
72
73/**
74 * The SimpleThread object provides a combination of the ThreadState
75 * object and the ThreadContext interface. It implements the
76 * ThreadContext interface so that a ProxyThreadContext class can be
77 * made using SimpleThread as the template parameter (see
78 * thread_context.hh). It adds to the ThreadState object by adding all
79 * the objects needed for simple functional execution, including a
80 * simple architectural register file, and pointers to the ITB and DTB
81 * in full system mode. For CPU models that do not need more advanced
82 * ways to hold state (i.e. a separate physical register file, or
83 * separate fetch and commit PC's), this SimpleThread class provides
84 * all the necessary state for full architecture-level functional
85 * simulation. See the AtomicSimpleCPU or TimingSimpleCPU for
86 * examples.
87 */
88
89class SimpleThread : public ThreadState
90{
91 protected:
92 typedef TheISA::RegFile RegFile;
93 typedef TheISA::MachInst MachInst;
94 typedef TheISA::MiscRegFile MiscRegFile;
95 typedef TheISA::MiscReg MiscReg;
96 typedef TheISA::FloatReg FloatReg;
97 typedef TheISA::FloatRegBits FloatRegBits;
98 public:
99 typedef ThreadContext::Status Status;
100
101 protected:
102 RegFile regs; // correct-path register context
103
104 public:
105 // pointer to CPU associated with this SimpleThread
106 BaseCPU *cpu;
107
108 ProxyThreadContext<SimpleThread> *tc;
109
110 System *system;
111
112#if FULL_SYSTEM
113 TheISA::ITB *itb;
114 TheISA::DTB *dtb;
115#endif
116
117 // constructor: initialize SimpleThread from given process structure
118#if FULL_SYSTEM
119 SimpleThread(BaseCPU *_cpu, int _thread_num, System *_system,
120 TheISA::ITB *_itb, TheISA::DTB *_dtb,
121 bool use_kernel_stats = true);
122#else
123 SimpleThread(BaseCPU *_cpu, int _thread_num, Process *_process, int _asid);
124#endif
125
126 SimpleThread();
127
128 virtual ~SimpleThread();
129
130 virtual void takeOverFrom(ThreadContext *oldContext);
131
132 void regStats(const std::string &name);
133
134 void copyTC(ThreadContext *context);
135
136 void copyState(ThreadContext *oldContext);
137
138 void serialize(std::ostream &os);
139 void unserialize(Checkpoint *cp, const std::string §ion);
140
141 /***************************************************************
142 * SimpleThread functions to provide CPU with access to various
143 * state, and to provide address translation methods.
144 **************************************************************/
145
146 /** Returns the pointer to this SimpleThread's ThreadContext. Used
147 * when a ThreadContext must be passed to objects outside of the
148 * CPU.
149 */
150 ThreadContext *getTC() { return tc; }
151
152#if FULL_SYSTEM
153 int getInstAsid() { return regs.instAsid(); }
154 int getDataAsid() { return regs.dataAsid(); }
155
156 Fault translateInstReq(RequestPtr &req)
157 {
158 return itb->translate(req, tc);
159 }
160
161 Fault translateDataReadReq(RequestPtr &req)
162 {
163 return dtb->translate(req, tc, false);
164 }
165
166 Fault translateDataWriteReq(RequestPtr &req)
167 {
168 return dtb->translate(req, tc, true);
169 }
170
171 void dumpFuncProfile();
172
173 Fault hwrei();
174
175 bool simPalCheck(int palFunc);
176#else
177
178 Fault translateInstReq(RequestPtr &req)
179 {
180 return process->pTable->translate(req);
181 }
182
183 Fault translateDataReadReq(RequestPtr &req)
184 {
185 return process->pTable->translate(req);
186 }
187
188 Fault translateDataWriteReq(RequestPtr &req)
189 {
190 return process->pTable->translate(req);
191 }
192#endif
193
194 /*******************************************
195 * ThreadContext interface functions.
196 ******************************************/
197
198 BaseCPU *getCpuPtr() { return cpu; }
199
200 int getThreadNum() { return tid; }
201
202#if FULL_SYSTEM
203 System *getSystemPtr() { return system; }
204
205 TheISA::ITB *getITBPtr() { return itb; }
206
207 TheISA::DTB *getDTBPtr() { return dtb; }
208
209 FunctionalPort *getPhysPort() { return physPort; }
210
211 /** Return a virtual port. If no thread context is specified then a static
212 * port is returned. Otherwise a port is created and returned. It must be
213 * deleted by deleteVirtPort(). */
214 VirtualPort *getVirtPort(ThreadContext *tc);
215
216 void delVirtPort(VirtualPort *vp);
217#endif
218
219 Status status() const { return _status; }
220
221 void setStatus(Status newStatus) { _status = newStatus; }
222
223 /// Set the status to Active. Optional delay indicates number of
224 /// cycles to wait before beginning execution.
225 void activate(int delay = 1);
226
227 /// Set the status to Suspended.
228 void suspend();
229
230 /// Set the status to Unallocated.
231 void deallocate();
232
233 /// Set the status to Halted.
234 void halt();
235
236 virtual bool misspeculating();
237
238 Fault instRead(RequestPtr &req)
239 {
240 panic("instRead not implemented");
241 // return funcPhysMem->read(req, inst);
242 return NoFault;
243 }
244
245 void copyArchRegs(ThreadContext *tc);
246
247 void clearArchRegs() { regs.clear(); }
248
249 //
250 // New accessors for new decoder.
251 //
252 uint64_t readIntReg(int reg_idx)
253 {
254 return regs.readIntReg(TheISA::flattenIntIndex(getTC(), reg_idx));
255 }
256
257 FloatReg readFloatReg(int reg_idx, int width)
258 {
259 return regs.readFloatReg(reg_idx, width);
260 }
261
262 FloatReg readFloatReg(int reg_idx)
263 {
264 return regs.readFloatReg(reg_idx);
265 }
266
267 FloatRegBits readFloatRegBits(int reg_idx, int width)
268 {
269 return regs.readFloatRegBits(reg_idx, width);
270 }
271
272 FloatRegBits readFloatRegBits(int reg_idx)
273 {
274 return regs.readFloatRegBits(reg_idx);
275 }
276
277 void setIntReg(int reg_idx, uint64_t val)
278 {
279 regs.setIntReg(TheISA::flattenIntIndex(getTC(), reg_idx), val);
280 }
281
282 void setFloatReg(int reg_idx, FloatReg val, int width)
283 {
284 regs.setFloatReg(reg_idx, val, width);
285 }
286
287 void setFloatReg(int reg_idx, FloatReg val)
288 {
289 regs.setFloatReg(reg_idx, val);
290 }
291
292 void setFloatRegBits(int reg_idx, FloatRegBits val, int width)
293 {
294 regs.setFloatRegBits(reg_idx, val, width);
295 }
296
297 void setFloatRegBits(int reg_idx, FloatRegBits val)
298 {
299 regs.setFloatRegBits(reg_idx, val);
300 }
301
302 uint64_t readPC()
303 {
304 return regs.readPC();
305 }
306
307 void setPC(uint64_t val)
308 {
309 regs.setPC(val);
310 }
311
312 uint64_t readMicroPC()
313 {
314 return microPC;
315 }
316
317 void setMicroPC(uint64_t val)
318 {
319 microPC = val;
320 }
321
322 uint64_t readNextPC()
323 {
324 return regs.readNextPC();
325 }
326
327 void setNextPC(uint64_t val)
328 {
329 regs.setNextPC(val);
330 }
331
332 uint64_t readNextMicroPC()
333 {
334 return nextMicroPC;
335 }
336
337 void setNextMicroPC(uint64_t val)
338 {
339 nextMicroPC = val;
340 }
341
342 uint64_t readNextNPC()
343 {
344 return regs.readNextNPC();
345 }
346
347 void setNextNPC(uint64_t val)
348 {
349 regs.setNextNPC(val);
350 }
351
| 1/*
2 * Copyright (c) 2001-2006 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_SIMPLE_THREAD_HH__
33#define __CPU_SIMPLE_THREAD_HH__
34
35#include "arch/isa_traits.hh"
36#include "arch/regfile.hh"
37#include "arch/syscallreturn.hh"
38#include "config/full_system.hh"
39#include "cpu/thread_context.hh"
40#include "cpu/thread_state.hh"
41#include "mem/request.hh"
42#include "sim/byteswap.hh"
43#include "sim/eventq.hh"
44#include "sim/host.hh"
45#include "sim/serialize.hh"
46
47class BaseCPU;
48
49#if FULL_SYSTEM
50
51#include "sim/system.hh"
52#include "arch/tlb.hh"
53
54class FunctionProfile;
55class ProfileNode;
56class FunctionalPort;
57class PhysicalPort;
58
59namespace TheISA {
60 namespace Kernel {
61 class Statistics;
62 };
63};
64
65#else // !FULL_SYSTEM
66
67#include "sim/process.hh"
68#include "mem/page_table.hh"
69class TranslatingPort;
70
71#endif // FULL_SYSTEM
72
73/**
74 * The SimpleThread object provides a combination of the ThreadState
75 * object and the ThreadContext interface. It implements the
76 * ThreadContext interface so that a ProxyThreadContext class can be
77 * made using SimpleThread as the template parameter (see
78 * thread_context.hh). It adds to the ThreadState object by adding all
79 * the objects needed for simple functional execution, including a
80 * simple architectural register file, and pointers to the ITB and DTB
81 * in full system mode. For CPU models that do not need more advanced
82 * ways to hold state (i.e. a separate physical register file, or
83 * separate fetch and commit PC's), this SimpleThread class provides
84 * all the necessary state for full architecture-level functional
85 * simulation. See the AtomicSimpleCPU or TimingSimpleCPU for
86 * examples.
87 */
88
89class SimpleThread : public ThreadState
90{
91 protected:
92 typedef TheISA::RegFile RegFile;
93 typedef TheISA::MachInst MachInst;
94 typedef TheISA::MiscRegFile MiscRegFile;
95 typedef TheISA::MiscReg MiscReg;
96 typedef TheISA::FloatReg FloatReg;
97 typedef TheISA::FloatRegBits FloatRegBits;
98 public:
99 typedef ThreadContext::Status Status;
100
101 protected:
102 RegFile regs; // correct-path register context
103
104 public:
105 // pointer to CPU associated with this SimpleThread
106 BaseCPU *cpu;
107
108 ProxyThreadContext<SimpleThread> *tc;
109
110 System *system;
111
112#if FULL_SYSTEM
113 TheISA::ITB *itb;
114 TheISA::DTB *dtb;
115#endif
116
117 // constructor: initialize SimpleThread from given process structure
118#if FULL_SYSTEM
119 SimpleThread(BaseCPU *_cpu, int _thread_num, System *_system,
120 TheISA::ITB *_itb, TheISA::DTB *_dtb,
121 bool use_kernel_stats = true);
122#else
123 SimpleThread(BaseCPU *_cpu, int _thread_num, Process *_process, int _asid);
124#endif
125
126 SimpleThread();
127
128 virtual ~SimpleThread();
129
130 virtual void takeOverFrom(ThreadContext *oldContext);
131
132 void regStats(const std::string &name);
133
134 void copyTC(ThreadContext *context);
135
136 void copyState(ThreadContext *oldContext);
137
138 void serialize(std::ostream &os);
139 void unserialize(Checkpoint *cp, const std::string §ion);
140
141 /***************************************************************
142 * SimpleThread functions to provide CPU with access to various
143 * state, and to provide address translation methods.
144 **************************************************************/
145
146 /** Returns the pointer to this SimpleThread's ThreadContext. Used
147 * when a ThreadContext must be passed to objects outside of the
148 * CPU.
149 */
150 ThreadContext *getTC() { return tc; }
151
152#if FULL_SYSTEM
153 int getInstAsid() { return regs.instAsid(); }
154 int getDataAsid() { return regs.dataAsid(); }
155
156 Fault translateInstReq(RequestPtr &req)
157 {
158 return itb->translate(req, tc);
159 }
160
161 Fault translateDataReadReq(RequestPtr &req)
162 {
163 return dtb->translate(req, tc, false);
164 }
165
166 Fault translateDataWriteReq(RequestPtr &req)
167 {
168 return dtb->translate(req, tc, true);
169 }
170
171 void dumpFuncProfile();
172
173 Fault hwrei();
174
175 bool simPalCheck(int palFunc);
176#else
177
178 Fault translateInstReq(RequestPtr &req)
179 {
180 return process->pTable->translate(req);
181 }
182
183 Fault translateDataReadReq(RequestPtr &req)
184 {
185 return process->pTable->translate(req);
186 }
187
188 Fault translateDataWriteReq(RequestPtr &req)
189 {
190 return process->pTable->translate(req);
191 }
192#endif
193
194 /*******************************************
195 * ThreadContext interface functions.
196 ******************************************/
197
198 BaseCPU *getCpuPtr() { return cpu; }
199
200 int getThreadNum() { return tid; }
201
202#if FULL_SYSTEM
203 System *getSystemPtr() { return system; }
204
205 TheISA::ITB *getITBPtr() { return itb; }
206
207 TheISA::DTB *getDTBPtr() { return dtb; }
208
209 FunctionalPort *getPhysPort() { return physPort; }
210
211 /** Return a virtual port. If no thread context is specified then a static
212 * port is returned. Otherwise a port is created and returned. It must be
213 * deleted by deleteVirtPort(). */
214 VirtualPort *getVirtPort(ThreadContext *tc);
215
216 void delVirtPort(VirtualPort *vp);
217#endif
218
219 Status status() const { return _status; }
220
221 void setStatus(Status newStatus) { _status = newStatus; }
222
223 /// Set the status to Active. Optional delay indicates number of
224 /// cycles to wait before beginning execution.
225 void activate(int delay = 1);
226
227 /// Set the status to Suspended.
228 void suspend();
229
230 /// Set the status to Unallocated.
231 void deallocate();
232
233 /// Set the status to Halted.
234 void halt();
235
236 virtual bool misspeculating();
237
238 Fault instRead(RequestPtr &req)
239 {
240 panic("instRead not implemented");
241 // return funcPhysMem->read(req, inst);
242 return NoFault;
243 }
244
245 void copyArchRegs(ThreadContext *tc);
246
247 void clearArchRegs() { regs.clear(); }
248
249 //
250 // New accessors for new decoder.
251 //
252 uint64_t readIntReg(int reg_idx)
253 {
254 return regs.readIntReg(TheISA::flattenIntIndex(getTC(), reg_idx));
255 }
256
257 FloatReg readFloatReg(int reg_idx, int width)
258 {
259 return regs.readFloatReg(reg_idx, width);
260 }
261
262 FloatReg readFloatReg(int reg_idx)
263 {
264 return regs.readFloatReg(reg_idx);
265 }
266
267 FloatRegBits readFloatRegBits(int reg_idx, int width)
268 {
269 return regs.readFloatRegBits(reg_idx, width);
270 }
271
272 FloatRegBits readFloatRegBits(int reg_idx)
273 {
274 return regs.readFloatRegBits(reg_idx);
275 }
276
277 void setIntReg(int reg_idx, uint64_t val)
278 {
279 regs.setIntReg(TheISA::flattenIntIndex(getTC(), reg_idx), val);
280 }
281
282 void setFloatReg(int reg_idx, FloatReg val, int width)
283 {
284 regs.setFloatReg(reg_idx, val, width);
285 }
286
287 void setFloatReg(int reg_idx, FloatReg val)
288 {
289 regs.setFloatReg(reg_idx, val);
290 }
291
292 void setFloatRegBits(int reg_idx, FloatRegBits val, int width)
293 {
294 regs.setFloatRegBits(reg_idx, val, width);
295 }
296
297 void setFloatRegBits(int reg_idx, FloatRegBits val)
298 {
299 regs.setFloatRegBits(reg_idx, val);
300 }
301
302 uint64_t readPC()
303 {
304 return regs.readPC();
305 }
306
307 void setPC(uint64_t val)
308 {
309 regs.setPC(val);
310 }
311
312 uint64_t readMicroPC()
313 {
314 return microPC;
315 }
316
317 void setMicroPC(uint64_t val)
318 {
319 microPC = val;
320 }
321
322 uint64_t readNextPC()
323 {
324 return regs.readNextPC();
325 }
326
327 void setNextPC(uint64_t val)
328 {
329 regs.setNextPC(val);
330 }
331
332 uint64_t readNextMicroPC()
333 {
334 return nextMicroPC;
335 }
336
337 void setNextMicroPC(uint64_t val)
338 {
339 nextMicroPC = val;
340 }
341
342 uint64_t readNextNPC()
343 {
344 return regs.readNextNPC();
345 }
346
347 void setNextNPC(uint64_t val)
348 {
349 regs.setNextNPC(val);
350 }
351
|
368 {
369 return regs.setMiscReg(misc_reg, val, tc);
370 }
371
372 unsigned readStCondFailures() { return storeCondFailures; }
373
374 void setStCondFailures(unsigned sc_failures)
375 { storeCondFailures = sc_failures; }
376
377#if !FULL_SYSTEM
378 TheISA::IntReg getSyscallArg(int i)
379 {
380 return regs.readIntReg(TheISA::flattenIntIndex(getTC(),
381 TheISA::ArgumentReg0 + i));
382 }
383
384 // used to shift args for indirect syscall
385 void setSyscallArg(int i, TheISA::IntReg val)
386 {
387 regs.setIntReg(TheISA::flattenIntIndex(getTC(),
388 TheISA::ArgumentReg0 + i), val);
389 }
390
391 void setSyscallReturn(SyscallReturn return_value)
392 {
393 TheISA::setSyscallReturn(return_value, getTC());
394 }
395
396 void syscall(int64_t callnum)
397 {
398 process->syscall(callnum, tc);
399 }
400#endif
401
402 void changeRegFileContext(TheISA::RegContextParam param,
403 TheISA::RegContextVal val)
404 {
405 regs.changeContext(param, val);
406 }
407};
408
409
410// for non-speculative execution context, spec_mode is always false
411inline bool
412SimpleThread::misspeculating()
413{
414 return false;
415}
416
417#endif // __CPU_CPU_EXEC_CONTEXT_HH__
| 368 {
369 return regs.setMiscReg(misc_reg, val, tc);
370 }
371
372 unsigned readStCondFailures() { return storeCondFailures; }
373
374 void setStCondFailures(unsigned sc_failures)
375 { storeCondFailures = sc_failures; }
376
377#if !FULL_SYSTEM
378 TheISA::IntReg getSyscallArg(int i)
379 {
380 return regs.readIntReg(TheISA::flattenIntIndex(getTC(),
381 TheISA::ArgumentReg0 + i));
382 }
383
384 // used to shift args for indirect syscall
385 void setSyscallArg(int i, TheISA::IntReg val)
386 {
387 regs.setIntReg(TheISA::flattenIntIndex(getTC(),
388 TheISA::ArgumentReg0 + i), val);
389 }
390
391 void setSyscallReturn(SyscallReturn return_value)
392 {
393 TheISA::setSyscallReturn(return_value, getTC());
394 }
395
396 void syscall(int64_t callnum)
397 {
398 process->syscall(callnum, tc);
399 }
400#endif
401
402 void changeRegFileContext(TheISA::RegContextParam param,
403 TheISA::RegContextVal val)
404 {
405 regs.changeContext(param, val);
406 }
407};
408
409
410// for non-speculative execution context, spec_mode is always false
411inline bool
412SimpleThread::misspeculating()
413{
414 return false;
415}
416
417#endif // __CPU_CPU_EXEC_CONTEXT_HH__
|