1/*
2 * Copyright (c) 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: Kevin Lim
29 */
30
31#ifndef __CPU_THREAD_CONTEXT_HH__
32#define __CPU_THREAD_CONTEXT_HH__
33
34#include "arch/regfile.hh"
35#include "arch/types.hh"
36#include "config/full_system.hh"
37#include "mem/request.hh"
38#include "sim/faults.hh"
39#include "sim/host.hh"
40#include "sim/serialize.hh"
41#include "sim/syscallreturn.hh"
42#include "sim/byteswap.hh"
43
44// @todo: Figure out a more architecture independent way to obtain the ITB and
45// DTB pointers.
46namespace TheISA
47{
48 class DTB;
49 class ITB;
50}
51class BaseCPU;
52class EndQuiesceEvent;
53class Event;
54class TranslatingPort;
55class FunctionalPort;
56class VirtualPort;
57class Process;
58class System;
59namespace TheISA {
60 namespace Kernel {
61 class Statistics;
62 };
63};
64
65/**
66 * ThreadContext is the external interface to all thread state for
67 * anything outside of the CPU. It provides all accessor methods to
68 * state that might be needed by external objects, ranging from
69 * register values to things such as kernel stats. It is an abstract
70 * base class; the CPU can create its own ThreadContext by either
71 * deriving from it, or using the templated ProxyThreadContext.
72 *
73 * The ThreadContext is slightly different than the ExecContext. The
74 * ThreadContext provides access to an individual thread's state; an
75 * ExecContext provides ISA access to the CPU (meaning it is
76 * implicitly multithreaded on SMT systems). Additionally the
77 * ThreadState is an abstract class that exactly defines the
78 * interface; the ExecContext is a more implicit interface that must
79 * be implemented so that the ISA can access whatever state it needs.
80 */
81class ThreadContext
82{
83 protected:
84 typedef TheISA::RegFile RegFile;
85 typedef TheISA::MachInst MachInst;
86 typedef TheISA::IntReg IntReg;
87 typedef TheISA::FloatReg FloatReg;
88 typedef TheISA::FloatRegBits FloatRegBits;
89 typedef TheISA::MiscRegFile MiscRegFile;
90 typedef TheISA::MiscReg MiscReg;
91 public:
92 enum Status
93 {
94 /// Initialized but not running yet. All CPUs start in
95 /// this state, but most transition to Active on cycle 1.
96 /// In MP or SMT systems, non-primary contexts will stay
97 /// in this state until a thread is assigned to them.
98 Unallocated,
99
100 /// Running. Instructions should be executed only when
101 /// the context is in this state.
102 Active,
103
104 /// Temporarily inactive. Entered while waiting for
105 /// synchronization, etc.
106 Suspended,
107
108 /// Permanently shut down. Entered when target executes
109 /// m5exit pseudo-instruction. When all contexts enter
110 /// this state, the simulation will terminate.
111 Halted
112 };
113
114 virtual ~ThreadContext() { };
115
116 virtual BaseCPU *getCpuPtr() = 0;
117
118 virtual void setCpuId(int id) = 0;
119
120 virtual int readCpuId() = 0;
121
122 virtual TheISA::ITB *getITBPtr() = 0;
123
124 virtual TheISA::DTB *getDTBPtr() = 0;
125
126#if FULL_SYSTEM
127 virtual System *getSystemPtr() = 0;
128
129 virtual TheISA::Kernel::Statistics *getKernelStats() = 0;
130
131 virtual FunctionalPort *getPhysPort() = 0;
132
133 virtual VirtualPort *getVirtPort(ThreadContext *tc = NULL) = 0;
134
135 virtual void delVirtPort(VirtualPort *vp) = 0;
136
137 virtual void connectMemPorts() = 0;
138#else
139 virtual TranslatingPort *getMemPort() = 0;
140
141 virtual Process *getProcessPtr() = 0;
142#endif
143
144 virtual Status status() const = 0;
145
146 virtual void setStatus(Status new_status) = 0;
147
148 /// Set the status to Active. Optional delay indicates number of
149 /// cycles to wait before beginning execution.
150 virtual void activate(int delay = 1) = 0;
151
152 /// Set the status to Suspended.
153 virtual void suspend() = 0;
154
155 /// Set the status to Unallocated.
156 virtual void deallocate(int delay = 0) = 0;
157
158 /// Set the status to Halted.
159 virtual void halt() = 0;
160
161#if FULL_SYSTEM
162 virtual void dumpFuncProfile() = 0;
163#endif
164
165 virtual void takeOverFrom(ThreadContext *old_context) = 0;
166
167 virtual void regStats(const std::string &name) = 0;
168
169 virtual void serialize(std::ostream &os) = 0;
170 virtual void unserialize(Checkpoint *cp, const std::string §ion) = 0;
171
172#if FULL_SYSTEM
173 virtual EndQuiesceEvent *getQuiesceEvent() = 0;
174
175 // Not necessarily the best location for these...
176 // Having an extra function just to read these is obnoxious
177 virtual Tick readLastActivate() = 0;
178 virtual Tick readLastSuspend() = 0;
179
180 virtual void profileClear() = 0;
181 virtual void profileSample() = 0;
182#endif
183
184 virtual int getThreadNum() = 0;
185
186 // Also somewhat obnoxious. Really only used for the TLB fault.
187 // However, may be quite useful in SPARC.
188 virtual TheISA::MachInst getInst() = 0;
189
190 virtual void copyArchRegs(ThreadContext *tc) = 0;
191
192 virtual void clearArchRegs() = 0;
193
194 //
195 // New accessors for new decoder.
196 //
197 virtual uint64_t readIntReg(int reg_idx) = 0;
198
199 virtual FloatReg readFloatReg(int reg_idx, int width) = 0;
200
201 virtual FloatReg readFloatReg(int reg_idx) = 0;
202
203 virtual FloatRegBits readFloatRegBits(int reg_idx, int width) = 0;
204
205 virtual FloatRegBits readFloatRegBits(int reg_idx) = 0;
206
207 virtual void setIntReg(int reg_idx, uint64_t val) = 0;
208
209 virtual void setFloatReg(int reg_idx, FloatReg val, int width) = 0;
210
211 virtual void setFloatReg(int reg_idx, FloatReg val) = 0;
212
213 virtual void setFloatRegBits(int reg_idx, FloatRegBits val) = 0;
214
215 virtual void setFloatRegBits(int reg_idx, FloatRegBits val, int width) = 0;
216
217 virtual uint64_t readPC() = 0;
218
219 virtual void setPC(uint64_t val) = 0;
220
221 virtual uint64_t readNextPC() = 0;
222
223 virtual void setNextPC(uint64_t val) = 0;
224
225 virtual uint64_t readNextNPC() = 0;
226
227 virtual void setNextNPC(uint64_t val) = 0;
228
229 virtual MiscReg readMiscRegNoEffect(int misc_reg) = 0;
230
231 virtual MiscReg readMiscReg(int misc_reg) = 0;
232
233 virtual void setMiscRegNoEffect(int misc_reg, const MiscReg &val) = 0;
234
235 virtual void setMiscReg(int misc_reg, const MiscReg &val) = 0;
236
237 virtual uint64_t readRegOtherThread(int misc_reg, unsigned tid) { return 0; }
238
239 virtual void setRegOtherThread(int misc_reg, const MiscReg &val, unsigned tid) { };
240
| 1/*
2 * Copyright (c) 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: Kevin Lim
29 */
30
31#ifndef __CPU_THREAD_CONTEXT_HH__
32#define __CPU_THREAD_CONTEXT_HH__
33
34#include "arch/regfile.hh"
35#include "arch/types.hh"
36#include "config/full_system.hh"
37#include "mem/request.hh"
38#include "sim/faults.hh"
39#include "sim/host.hh"
40#include "sim/serialize.hh"
41#include "sim/syscallreturn.hh"
42#include "sim/byteswap.hh"
43
44// @todo: Figure out a more architecture independent way to obtain the ITB and
45// DTB pointers.
46namespace TheISA
47{
48 class DTB;
49 class ITB;
50}
51class BaseCPU;
52class EndQuiesceEvent;
53class Event;
54class TranslatingPort;
55class FunctionalPort;
56class VirtualPort;
57class Process;
58class System;
59namespace TheISA {
60 namespace Kernel {
61 class Statistics;
62 };
63};
64
65/**
66 * ThreadContext is the external interface to all thread state for
67 * anything outside of the CPU. It provides all accessor methods to
68 * state that might be needed by external objects, ranging from
69 * register values to things such as kernel stats. It is an abstract
70 * base class; the CPU can create its own ThreadContext by either
71 * deriving from it, or using the templated ProxyThreadContext.
72 *
73 * The ThreadContext is slightly different than the ExecContext. The
74 * ThreadContext provides access to an individual thread's state; an
75 * ExecContext provides ISA access to the CPU (meaning it is
76 * implicitly multithreaded on SMT systems). Additionally the
77 * ThreadState is an abstract class that exactly defines the
78 * interface; the ExecContext is a more implicit interface that must
79 * be implemented so that the ISA can access whatever state it needs.
80 */
81class ThreadContext
82{
83 protected:
84 typedef TheISA::RegFile RegFile;
85 typedef TheISA::MachInst MachInst;
86 typedef TheISA::IntReg IntReg;
87 typedef TheISA::FloatReg FloatReg;
88 typedef TheISA::FloatRegBits FloatRegBits;
89 typedef TheISA::MiscRegFile MiscRegFile;
90 typedef TheISA::MiscReg MiscReg;
91 public:
92 enum Status
93 {
94 /// Initialized but not running yet. All CPUs start in
95 /// this state, but most transition to Active on cycle 1.
96 /// In MP or SMT systems, non-primary contexts will stay
97 /// in this state until a thread is assigned to them.
98 Unallocated,
99
100 /// Running. Instructions should be executed only when
101 /// the context is in this state.
102 Active,
103
104 /// Temporarily inactive. Entered while waiting for
105 /// synchronization, etc.
106 Suspended,
107
108 /// Permanently shut down. Entered when target executes
109 /// m5exit pseudo-instruction. When all contexts enter
110 /// this state, the simulation will terminate.
111 Halted
112 };
113
114 virtual ~ThreadContext() { };
115
116 virtual BaseCPU *getCpuPtr() = 0;
117
118 virtual void setCpuId(int id) = 0;
119
120 virtual int readCpuId() = 0;
121
122 virtual TheISA::ITB *getITBPtr() = 0;
123
124 virtual TheISA::DTB *getDTBPtr() = 0;
125
126#if FULL_SYSTEM
127 virtual System *getSystemPtr() = 0;
128
129 virtual TheISA::Kernel::Statistics *getKernelStats() = 0;
130
131 virtual FunctionalPort *getPhysPort() = 0;
132
133 virtual VirtualPort *getVirtPort(ThreadContext *tc = NULL) = 0;
134
135 virtual void delVirtPort(VirtualPort *vp) = 0;
136
137 virtual void connectMemPorts() = 0;
138#else
139 virtual TranslatingPort *getMemPort() = 0;
140
141 virtual Process *getProcessPtr() = 0;
142#endif
143
144 virtual Status status() const = 0;
145
146 virtual void setStatus(Status new_status) = 0;
147
148 /// Set the status to Active. Optional delay indicates number of
149 /// cycles to wait before beginning execution.
150 virtual void activate(int delay = 1) = 0;
151
152 /// Set the status to Suspended.
153 virtual void suspend() = 0;
154
155 /// Set the status to Unallocated.
156 virtual void deallocate(int delay = 0) = 0;
157
158 /// Set the status to Halted.
159 virtual void halt() = 0;
160
161#if FULL_SYSTEM
162 virtual void dumpFuncProfile() = 0;
163#endif
164
165 virtual void takeOverFrom(ThreadContext *old_context) = 0;
166
167 virtual void regStats(const std::string &name) = 0;
168
169 virtual void serialize(std::ostream &os) = 0;
170 virtual void unserialize(Checkpoint *cp, const std::string §ion) = 0;
171
172#if FULL_SYSTEM
173 virtual EndQuiesceEvent *getQuiesceEvent() = 0;
174
175 // Not necessarily the best location for these...
176 // Having an extra function just to read these is obnoxious
177 virtual Tick readLastActivate() = 0;
178 virtual Tick readLastSuspend() = 0;
179
180 virtual void profileClear() = 0;
181 virtual void profileSample() = 0;
182#endif
183
184 virtual int getThreadNum() = 0;
185
186 // Also somewhat obnoxious. Really only used for the TLB fault.
187 // However, may be quite useful in SPARC.
188 virtual TheISA::MachInst getInst() = 0;
189
190 virtual void copyArchRegs(ThreadContext *tc) = 0;
191
192 virtual void clearArchRegs() = 0;
193
194 //
195 // New accessors for new decoder.
196 //
197 virtual uint64_t readIntReg(int reg_idx) = 0;
198
199 virtual FloatReg readFloatReg(int reg_idx, int width) = 0;
200
201 virtual FloatReg readFloatReg(int reg_idx) = 0;
202
203 virtual FloatRegBits readFloatRegBits(int reg_idx, int width) = 0;
204
205 virtual FloatRegBits readFloatRegBits(int reg_idx) = 0;
206
207 virtual void setIntReg(int reg_idx, uint64_t val) = 0;
208
209 virtual void setFloatReg(int reg_idx, FloatReg val, int width) = 0;
210
211 virtual void setFloatReg(int reg_idx, FloatReg val) = 0;
212
213 virtual void setFloatRegBits(int reg_idx, FloatRegBits val) = 0;
214
215 virtual void setFloatRegBits(int reg_idx, FloatRegBits val, int width) = 0;
216
217 virtual uint64_t readPC() = 0;
218
219 virtual void setPC(uint64_t val) = 0;
220
221 virtual uint64_t readNextPC() = 0;
222
223 virtual void setNextPC(uint64_t val) = 0;
224
225 virtual uint64_t readNextNPC() = 0;
226
227 virtual void setNextNPC(uint64_t val) = 0;
228
229 virtual MiscReg readMiscRegNoEffect(int misc_reg) = 0;
230
231 virtual MiscReg readMiscReg(int misc_reg) = 0;
232
233 virtual void setMiscRegNoEffect(int misc_reg, const MiscReg &val) = 0;
234
235 virtual void setMiscReg(int misc_reg, const MiscReg &val) = 0;
236
237 virtual uint64_t readRegOtherThread(int misc_reg, unsigned tid) { return 0; }
238
239 virtual void setRegOtherThread(int misc_reg, const MiscReg &val, unsigned tid) { };
240
|
241 // Also not necessarily the best location for these two. Hopefully will go
242 // away once we decide upon where st cond failures goes.
243 virtual unsigned readStCondFailures() = 0;
244
245 virtual void setStCondFailures(unsigned sc_failures) = 0;
246
247 // Only really makes sense for old CPU model. Still could be useful though.
248 virtual bool misspeculating() = 0;
249
250#if !FULL_SYSTEM
251 virtual IntReg getSyscallArg(int i) = 0;
252
253 // used to shift args for indirect syscall
254 virtual void setSyscallArg(int i, IntReg val) = 0;
255
256 virtual void setSyscallReturn(SyscallReturn return_value) = 0;
257
258 // Same with st cond failures.
259 virtual Counter readFuncExeInst() = 0;
260
261 virtual void syscall(int64_t callnum) = 0;
262
263 // This function exits the thread context in the CPU and returns
264 // 1 if the CPU has no more active threads (meaning it's OK to exit);
265 // Used in syscall-emulation mode when a thread calls the exit syscall.
266 virtual int exit() { return 1; };
267#endif
268
269 virtual void changeRegFileContext(TheISA::RegContextParam param,
270 TheISA::RegContextVal val) = 0;
271
272 /** function to compare two thread contexts (for debugging) */
273 static void compare(ThreadContext *one, ThreadContext *two);
274};
275
276/**
277 * ProxyThreadContext class that provides a way to implement a
278 * ThreadContext without having to derive from it. ThreadContext is an
279 * abstract class, so anything that derives from it and uses its
280 * interface will pay the overhead of virtual function calls. This
281 * class is created to enable a user-defined Thread object to be used
282 * wherever ThreadContexts are used, without paying the overhead of
283 * virtual function calls when it is used by itself. See
284 * simple_thread.hh for an example of this.
285 */
286template <class TC>
287class ProxyThreadContext : public ThreadContext
288{
289 public:
290 ProxyThreadContext(TC *actual_tc)
291 { actualTC = actual_tc; }
292
293 private:
294 TC *actualTC;
295
296 public:
297
298 BaseCPU *getCpuPtr() { return actualTC->getCpuPtr(); }
299
300 void setCpuId(int id) { actualTC->setCpuId(id); }
301
302 int readCpuId() { return actualTC->readCpuId(); }
303
304 TheISA::ITB *getITBPtr() { return actualTC->getITBPtr(); }
305
306 TheISA::DTB *getDTBPtr() { return actualTC->getDTBPtr(); }
307
308#if FULL_SYSTEM
309 System *getSystemPtr() { return actualTC->getSystemPtr(); }
310
311 TheISA::Kernel::Statistics *getKernelStats()
312 { return actualTC->getKernelStats(); }
313
314 FunctionalPort *getPhysPort() { return actualTC->getPhysPort(); }
315
316 VirtualPort *getVirtPort(ThreadContext *tc = NULL) { return actualTC->getVirtPort(tc); }
317
318 void delVirtPort(VirtualPort *vp) { return actualTC->delVirtPort(vp); }
319
320 void connectMemPorts() { actualTC->connectMemPorts(); }
321#else
322 TranslatingPort *getMemPort() { return actualTC->getMemPort(); }
323
324 Process *getProcessPtr() { return actualTC->getProcessPtr(); }
325#endif
326
327 Status status() const { return actualTC->status(); }
328
329 void setStatus(Status new_status) { actualTC->setStatus(new_status); }
330
331 /// Set the status to Active. Optional delay indicates number of
332 /// cycles to wait before beginning execution.
333 void activate(int delay = 1) { actualTC->activate(delay); }
334
335 /// Set the status to Suspended.
336 void suspend() { actualTC->suspend(); }
337
338 /// Set the status to Unallocated.
339 void deallocate(int delay = 0) { actualTC->deallocate(); }
340
341 /// Set the status to Halted.
342 void halt() { actualTC->halt(); }
343
344#if FULL_SYSTEM
345 void dumpFuncProfile() { actualTC->dumpFuncProfile(); }
346#endif
347
348 void takeOverFrom(ThreadContext *oldContext)
349 { actualTC->takeOverFrom(oldContext); }
350
351 void regStats(const std::string &name) { actualTC->regStats(name); }
352
353 void serialize(std::ostream &os) { actualTC->serialize(os); }
354 void unserialize(Checkpoint *cp, const std::string §ion)
355 { actualTC->unserialize(cp, section); }
356
357#if FULL_SYSTEM
358 EndQuiesceEvent *getQuiesceEvent() { return actualTC->getQuiesceEvent(); }
359
360 Tick readLastActivate() { return actualTC->readLastActivate(); }
361 Tick readLastSuspend() { return actualTC->readLastSuspend(); }
362
363 void profileClear() { return actualTC->profileClear(); }
364 void profileSample() { return actualTC->profileSample(); }
365#endif
366
367 int getThreadNum() { return actualTC->getThreadNum(); }
368
369 // @todo: Do I need this?
370 MachInst getInst() { return actualTC->getInst(); }
371
372 // @todo: Do I need this?
373 void copyArchRegs(ThreadContext *tc) { actualTC->copyArchRegs(tc); }
374
375 void clearArchRegs() { actualTC->clearArchRegs(); }
376
377 //
378 // New accessors for new decoder.
379 //
380 uint64_t readIntReg(int reg_idx)
381 { return actualTC->readIntReg(reg_idx); }
382
383 FloatReg readFloatReg(int reg_idx, int width)
384 { return actualTC->readFloatReg(reg_idx, width); }
385
386 FloatReg readFloatReg(int reg_idx)
387 { return actualTC->readFloatReg(reg_idx); }
388
389 FloatRegBits readFloatRegBits(int reg_idx, int width)
390 { return actualTC->readFloatRegBits(reg_idx, width); }
391
392 FloatRegBits readFloatRegBits(int reg_idx)
393 { return actualTC->readFloatRegBits(reg_idx); }
394
395 void setIntReg(int reg_idx, uint64_t val)
396 { actualTC->setIntReg(reg_idx, val); }
397
398 void setFloatReg(int reg_idx, FloatReg val, int width)
399 { actualTC->setFloatReg(reg_idx, val, width); }
400
401 void setFloatReg(int reg_idx, FloatReg val)
402 { actualTC->setFloatReg(reg_idx, val); }
403
404 void setFloatRegBits(int reg_idx, FloatRegBits val, int width)
405 { actualTC->setFloatRegBits(reg_idx, val, width); }
406
407 void setFloatRegBits(int reg_idx, FloatRegBits val)
408 { actualTC->setFloatRegBits(reg_idx, val); }
409
| 243 // Also not necessarily the best location for these two. Hopefully will go
244 // away once we decide upon where st cond failures goes.
245 virtual unsigned readStCondFailures() = 0;
246
247 virtual void setStCondFailures(unsigned sc_failures) = 0;
248
249 // Only really makes sense for old CPU model. Still could be useful though.
250 virtual bool misspeculating() = 0;
251
252#if !FULL_SYSTEM
253 virtual IntReg getSyscallArg(int i) = 0;
254
255 // used to shift args for indirect syscall
256 virtual void setSyscallArg(int i, IntReg val) = 0;
257
258 virtual void setSyscallReturn(SyscallReturn return_value) = 0;
259
260 // Same with st cond failures.
261 virtual Counter readFuncExeInst() = 0;
262
263 virtual void syscall(int64_t callnum) = 0;
264
265 // This function exits the thread context in the CPU and returns
266 // 1 if the CPU has no more active threads (meaning it's OK to exit);
267 // Used in syscall-emulation mode when a thread calls the exit syscall.
268 virtual int exit() { return 1; };
269#endif
270
271 virtual void changeRegFileContext(TheISA::RegContextParam param,
272 TheISA::RegContextVal val) = 0;
273
274 /** function to compare two thread contexts (for debugging) */
275 static void compare(ThreadContext *one, ThreadContext *two);
276};
277
278/**
279 * ProxyThreadContext class that provides a way to implement a
280 * ThreadContext without having to derive from it. ThreadContext is an
281 * abstract class, so anything that derives from it and uses its
282 * interface will pay the overhead of virtual function calls. This
283 * class is created to enable a user-defined Thread object to be used
284 * wherever ThreadContexts are used, without paying the overhead of
285 * virtual function calls when it is used by itself. See
286 * simple_thread.hh for an example of this.
287 */
288template <class TC>
289class ProxyThreadContext : public ThreadContext
290{
291 public:
292 ProxyThreadContext(TC *actual_tc)
293 { actualTC = actual_tc; }
294
295 private:
296 TC *actualTC;
297
298 public:
299
300 BaseCPU *getCpuPtr() { return actualTC->getCpuPtr(); }
301
302 void setCpuId(int id) { actualTC->setCpuId(id); }
303
304 int readCpuId() { return actualTC->readCpuId(); }
305
306 TheISA::ITB *getITBPtr() { return actualTC->getITBPtr(); }
307
308 TheISA::DTB *getDTBPtr() { return actualTC->getDTBPtr(); }
309
310#if FULL_SYSTEM
311 System *getSystemPtr() { return actualTC->getSystemPtr(); }
312
313 TheISA::Kernel::Statistics *getKernelStats()
314 { return actualTC->getKernelStats(); }
315
316 FunctionalPort *getPhysPort() { return actualTC->getPhysPort(); }
317
318 VirtualPort *getVirtPort(ThreadContext *tc = NULL) { return actualTC->getVirtPort(tc); }
319
320 void delVirtPort(VirtualPort *vp) { return actualTC->delVirtPort(vp); }
321
322 void connectMemPorts() { actualTC->connectMemPorts(); }
323#else
324 TranslatingPort *getMemPort() { return actualTC->getMemPort(); }
325
326 Process *getProcessPtr() { return actualTC->getProcessPtr(); }
327#endif
328
329 Status status() const { return actualTC->status(); }
330
331 void setStatus(Status new_status) { actualTC->setStatus(new_status); }
332
333 /// Set the status to Active. Optional delay indicates number of
334 /// cycles to wait before beginning execution.
335 void activate(int delay = 1) { actualTC->activate(delay); }
336
337 /// Set the status to Suspended.
338 void suspend() { actualTC->suspend(); }
339
340 /// Set the status to Unallocated.
341 void deallocate(int delay = 0) { actualTC->deallocate(); }
342
343 /// Set the status to Halted.
344 void halt() { actualTC->halt(); }
345
346#if FULL_SYSTEM
347 void dumpFuncProfile() { actualTC->dumpFuncProfile(); }
348#endif
349
350 void takeOverFrom(ThreadContext *oldContext)
351 { actualTC->takeOverFrom(oldContext); }
352
353 void regStats(const std::string &name) { actualTC->regStats(name); }
354
355 void serialize(std::ostream &os) { actualTC->serialize(os); }
356 void unserialize(Checkpoint *cp, const std::string §ion)
357 { actualTC->unserialize(cp, section); }
358
359#if FULL_SYSTEM
360 EndQuiesceEvent *getQuiesceEvent() { return actualTC->getQuiesceEvent(); }
361
362 Tick readLastActivate() { return actualTC->readLastActivate(); }
363 Tick readLastSuspend() { return actualTC->readLastSuspend(); }
364
365 void profileClear() { return actualTC->profileClear(); }
366 void profileSample() { return actualTC->profileSample(); }
367#endif
368
369 int getThreadNum() { return actualTC->getThreadNum(); }
370
371 // @todo: Do I need this?
372 MachInst getInst() { return actualTC->getInst(); }
373
374 // @todo: Do I need this?
375 void copyArchRegs(ThreadContext *tc) { actualTC->copyArchRegs(tc); }
376
377 void clearArchRegs() { actualTC->clearArchRegs(); }
378
379 //
380 // New accessors for new decoder.
381 //
382 uint64_t readIntReg(int reg_idx)
383 { return actualTC->readIntReg(reg_idx); }
384
385 FloatReg readFloatReg(int reg_idx, int width)
386 { return actualTC->readFloatReg(reg_idx, width); }
387
388 FloatReg readFloatReg(int reg_idx)
389 { return actualTC->readFloatReg(reg_idx); }
390
391 FloatRegBits readFloatRegBits(int reg_idx, int width)
392 { return actualTC->readFloatRegBits(reg_idx, width); }
393
394 FloatRegBits readFloatRegBits(int reg_idx)
395 { return actualTC->readFloatRegBits(reg_idx); }
396
397 void setIntReg(int reg_idx, uint64_t val)
398 { actualTC->setIntReg(reg_idx, val); }
399
400 void setFloatReg(int reg_idx, FloatReg val, int width)
401 { actualTC->setFloatReg(reg_idx, val, width); }
402
403 void setFloatReg(int reg_idx, FloatReg val)
404 { actualTC->setFloatReg(reg_idx, val); }
405
406 void setFloatRegBits(int reg_idx, FloatRegBits val, int width)
407 { actualTC->setFloatRegBits(reg_idx, val, width); }
408
409 void setFloatRegBits(int reg_idx, FloatRegBits val)
410 { actualTC->setFloatRegBits(reg_idx, val); }
411
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410 uint64_t readPC() { return actualTC->readPC(); }
411
412 void setPC(uint64_t val) { actualTC->setPC(val); }
413
414 uint64_t readNextPC() { return actualTC->readNextPC(); }
415
416 void setNextPC(uint64_t val) { actualTC->setNextPC(val); }
417
418 uint64_t readNextNPC() { return actualTC->readNextNPC(); }
419
420 void setNextNPC(uint64_t val) { actualTC->setNextNPC(val); }
421
422 MiscReg readMiscRegNoEffect(int misc_reg)
423 { return actualTC->readMiscRegNoEffect(misc_reg); }
424
425 MiscReg readMiscReg(int misc_reg)
426 { return actualTC->readMiscReg(misc_reg); }
427
428 void setMiscRegNoEffect(int misc_reg, const MiscReg &val)
429 { return actualTC->setMiscRegNoEffect(misc_reg, val); }
430
431 void setMiscReg(int misc_reg, const MiscReg &val)
432 { return actualTC->setMiscReg(misc_reg, val); }
433
434 unsigned readStCondFailures()
435 { return actualTC->readStCondFailures(); }
436
437 void setStCondFailures(unsigned sc_failures)
438 { actualTC->setStCondFailures(sc_failures); }
439
440 // @todo: Fix this!
441 bool misspeculating() { return actualTC->misspeculating(); }
442
443#if !FULL_SYSTEM
444 IntReg getSyscallArg(int i) { return actualTC->getSyscallArg(i); }
445
446 // used to shift args for indirect syscall
447 void setSyscallArg(int i, IntReg val)
448 { actualTC->setSyscallArg(i, val); }
449
450 void setSyscallReturn(SyscallReturn return_value)
451 { actualTC->setSyscallReturn(return_value); }
452
453 void syscall(int64_t callnum)
454 { actualTC->syscall(callnum); }
455
456 Counter readFuncExeInst() { return actualTC->readFuncExeInst(); }
457#endif
458
459 void changeRegFileContext(TheISA::RegContextParam param,
460 TheISA::RegContextVal val)
461 {
462 actualTC->changeRegFileContext(param, val);
463 }
464};
465
466#endif
| 416 uint64_t readPC() { return actualTC->readPC(); }
417
418 void setPC(uint64_t val) { actualTC->setPC(val); }
419
420 uint64_t readNextPC() { return actualTC->readNextPC(); }
421
422 void setNextPC(uint64_t val) { actualTC->setNextPC(val); }
423
424 uint64_t readNextNPC() { return actualTC->readNextNPC(); }
425
426 void setNextNPC(uint64_t val) { actualTC->setNextNPC(val); }
427
428 MiscReg readMiscRegNoEffect(int misc_reg)
429 { return actualTC->readMiscRegNoEffect(misc_reg); }
430
431 MiscReg readMiscReg(int misc_reg)
432 { return actualTC->readMiscReg(misc_reg); }
433
434 void setMiscRegNoEffect(int misc_reg, const MiscReg &val)
435 { return actualTC->setMiscRegNoEffect(misc_reg, val); }
436
437 void setMiscReg(int misc_reg, const MiscReg &val)
438 { return actualTC->setMiscReg(misc_reg, val); }
439
440 unsigned readStCondFailures()
441 { return actualTC->readStCondFailures(); }
442
443 void setStCondFailures(unsigned sc_failures)
444 { actualTC->setStCondFailures(sc_failures); }
445
446 // @todo: Fix this!
447 bool misspeculating() { return actualTC->misspeculating(); }
448
449#if !FULL_SYSTEM
450 IntReg getSyscallArg(int i) { return actualTC->getSyscallArg(i); }
451
452 // used to shift args for indirect syscall
453 void setSyscallArg(int i, IntReg val)
454 { actualTC->setSyscallArg(i, val); }
455
456 void setSyscallReturn(SyscallReturn return_value)
457 { actualTC->setSyscallReturn(return_value); }
458
459 void syscall(int64_t callnum)
460 { actualTC->syscall(callnum); }
461
462 Counter readFuncExeInst() { return actualTC->readFuncExeInst(); }
463#endif
464
465 void changeRegFileContext(TheISA::RegContextParam param,
466 TheISA::RegContextVal val)
467 {
468 actualTC->changeRegFileContext(param, val);
469 }
470};
471
472#endif
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