1/*
2 * Copyright (c) 2010-2011 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2004-2006 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Kevin Lim
41 */
42
43#include "base/cp_annotate.hh"
44#include "cpu/o3/dyn_inst.hh"
45#include "sim/full_system.hh"
46#include "debug/O3PipeView.hh"
47
48template <class Impl>
49BaseO3DynInst<Impl>::BaseO3DynInst(StaticInstPtr staticInst,
50 StaticInstPtr macroop,
51 TheISA::PCState pc, TheISA::PCState predPC,
52 InstSeqNum seq_num, O3CPU *cpu)
53 : BaseDynInst<Impl>(staticInst, macroop, pc, predPC, seq_num, cpu)
54{
55 initVars();
56}
57
58template <class Impl>
59BaseO3DynInst<Impl>::BaseO3DynInst(StaticInstPtr _staticInst,
60 StaticInstPtr _macroop)
61 : BaseDynInst<Impl>(_staticInst, _macroop)
62{
63 initVars();
64}
65
66template <class Impl>BaseO3DynInst<Impl>::~BaseO3DynInst()
67{
68#if TRACING_ON
| 1/*
2 * Copyright (c) 2010-2011 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2004-2006 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Kevin Lim
41 */
42
43#include "base/cp_annotate.hh"
44#include "cpu/o3/dyn_inst.hh"
45#include "sim/full_system.hh"
46#include "debug/O3PipeView.hh"
47
48template <class Impl>
49BaseO3DynInst<Impl>::BaseO3DynInst(StaticInstPtr staticInst,
50 StaticInstPtr macroop,
51 TheISA::PCState pc, TheISA::PCState predPC,
52 InstSeqNum seq_num, O3CPU *cpu)
53 : BaseDynInst<Impl>(staticInst, macroop, pc, predPC, seq_num, cpu)
54{
55 initVars();
56}
57
58template <class Impl>
59BaseO3DynInst<Impl>::BaseO3DynInst(StaticInstPtr _staticInst,
60 StaticInstPtr _macroop)
61 : BaseDynInst<Impl>(_staticInst, _macroop)
62{
63 initVars();
64}
65
66template <class Impl>BaseO3DynInst<Impl>::~BaseO3DynInst()
67{
68#if TRACING_ON
|
69 Tick val, fetch = this->fetchTick;
70 // Print info needed by the pipeline activity viewer.
71 DPRINTFR(O3PipeView, "O3PipeView:fetch:%llu:0x%08llx:%d:%llu:%s\n",
72 fetch,
73 this->instAddr(),
74 this->microPC(),
75 this->seqNum,
76 this->staticInst->disassemble(this->instAddr()));
77 val = (this->decodeTick == -1) ? 0 : fetch + this->decodeTick;
78 DPRINTFR(O3PipeView, "O3PipeView:decode:%llu\n", val);
79 val = (this->renameTick == -1) ? 0 : fetch + this->renameTick;
80 DPRINTFR(O3PipeView, "O3PipeView:rename:%llu\n", val);
81 val = (this->dispatchTick == -1) ? 0 : fetch + this->dispatchTick;
82 DPRINTFR(O3PipeView, "O3PipeView:dispatch:%llu\n", val);
83 val = (this->issueTick == -1) ? 0 : fetch + this->issueTick;
84 DPRINTFR(O3PipeView, "O3PipeView:issue:%llu\n", val);
85 val = (this->completeTick == -1) ? 0 : fetch + this->completeTick;
86 DPRINTFR(O3PipeView, "O3PipeView:complete:%llu\n", val);
87 val = (this->commitTick == -1) ? 0 : fetch + this->commitTick;
88 DPRINTFR(O3PipeView, "O3PipeView:retire:%llu\n", val);
| 69 if (DTRACE(O3PipeView)) {
70 Tick fetch = this->fetchTick;
71 // fetchTick can be -1 if the instruction fetched outside the trace window.
72 if (fetch != -1) {
73 Tick val;
74 // Print info needed by the pipeline activity viewer.
75 DPRINTFR(O3PipeView, "O3PipeView:fetch:%llu:0x%08llx:%d:%llu:%s\n",
76 fetch,
77 this->instAddr(),
78 this->microPC(),
79 this->seqNum,
80 this->staticInst->disassemble(this->instAddr()));
81
82 val = (this->decodeTick == -1) ? 0 : fetch + this->decodeTick;
83 DPRINTFR(O3PipeView, "O3PipeView:decode:%llu\n", val);
84 val = (this->renameTick == -1) ? 0 : fetch + this->renameTick;
85 DPRINTFR(O3PipeView, "O3PipeView:rename:%llu\n", val);
86 val = (this->dispatchTick == -1) ? 0 : fetch + this->dispatchTick;
87 DPRINTFR(O3PipeView, "O3PipeView:dispatch:%llu\n", val);
88 val = (this->issueTick == -1) ? 0 : fetch + this->issueTick;
89 DPRINTFR(O3PipeView, "O3PipeView:issue:%llu\n", val);
90 val = (this->completeTick == -1) ? 0 : fetch + this->completeTick;
91 DPRINTFR(O3PipeView, "O3PipeView:complete:%llu\n", val);
92 val = (this->commitTick == -1) ? 0 : fetch + this->commitTick;
93
94 Tick valS = (this->storeTick == -1) ? 0 : fetch + this->storeTick;
95 DPRINTFR(O3PipeView, "O3PipeView:retire:%llu:store:%llu\n", val, valS);
96 }
97 }
|
89#endif
90};
91
92
93template <class Impl>
94void
95BaseO3DynInst<Impl>::initVars()
96{
97 // Make sure to have the renamed register entries set to the same
98 // as the normal register entries. It will allow the IQ to work
99 // without any modifications.
100 for (int i = 0; i < this->staticInst->numDestRegs(); i++) {
101 this->_destRegIdx[i] = this->staticInst->destRegIdx(i);
102 }
103
104 for (int i = 0; i < this->staticInst->numSrcRegs(); i++) {
105 this->_srcRegIdx[i] = this->staticInst->srcRegIdx(i);
106 }
107
108 this->_readySrcRegIdx.reset();
109
110 _numDestMiscRegs = 0;
111
112#if TRACING_ON
113 // Value -1 indicates that particular phase
114 // hasn't happened (yet).
115 fetchTick = -1;
116 decodeTick = -1;
117 renameTick = -1;
118 dispatchTick = -1;
119 issueTick = -1;
120 completeTick = -1;
121 commitTick = -1;
| 98#endif
99};
100
101
102template <class Impl>
103void
104BaseO3DynInst<Impl>::initVars()
105{
106 // Make sure to have the renamed register entries set to the same
107 // as the normal register entries. It will allow the IQ to work
108 // without any modifications.
109 for (int i = 0; i < this->staticInst->numDestRegs(); i++) {
110 this->_destRegIdx[i] = this->staticInst->destRegIdx(i);
111 }
112
113 for (int i = 0; i < this->staticInst->numSrcRegs(); i++) {
114 this->_srcRegIdx[i] = this->staticInst->srcRegIdx(i);
115 }
116
117 this->_readySrcRegIdx.reset();
118
119 _numDestMiscRegs = 0;
120
121#if TRACING_ON
122 // Value -1 indicates that particular phase
123 // hasn't happened (yet).
124 fetchTick = -1;
125 decodeTick = -1;
126 renameTick = -1;
127 dispatchTick = -1;
128 issueTick = -1;
129 completeTick = -1;
130 commitTick = -1;
|
| 131 storeTick = -1;
|
122#endif
123}
124
125template <class Impl>
126Fault
127BaseO3DynInst<Impl>::execute()
128{
129 // @todo: Pretty convoluted way to avoid squashing from happening
130 // when using the TC during an instruction's execution
131 // (specifically for instructions that have side-effects that use
132 // the TC). Fix this.
133 bool no_squash_from_TC = this->thread->noSquashFromTC;
134 this->thread->noSquashFromTC = true;
135
136 this->fault = this->staticInst->execute(this, this->traceData);
137
138 this->thread->noSquashFromTC = no_squash_from_TC;
139
140 return this->fault;
141}
142
143template <class Impl>
144Fault
145BaseO3DynInst<Impl>::initiateAcc()
146{
147 // @todo: Pretty convoluted way to avoid squashing from happening
148 // when using the TC during an instruction's execution
149 // (specifically for instructions that have side-effects that use
150 // the TC). Fix this.
151 bool no_squash_from_TC = this->thread->noSquashFromTC;
152 this->thread->noSquashFromTC = true;
153
154 this->fault = this->staticInst->initiateAcc(this, this->traceData);
155
156 this->thread->noSquashFromTC = no_squash_from_TC;
157
158 return this->fault;
159}
160
161template <class Impl>
162Fault
163BaseO3DynInst<Impl>::completeAcc(PacketPtr pkt)
164{
165 // @todo: Pretty convoluted way to avoid squashing from happening
166 // when using the TC during an instruction's execution
167 // (specifically for instructions that have side-effects that use
168 // the TC). Fix this.
169 bool no_squash_from_TC = this->thread->noSquashFromTC;
170 this->thread->noSquashFromTC = true;
171
172 if (this->cpu->checker) {
173 if (this->isStoreConditional()) {
174 this->reqToVerify->setExtraData(pkt->req->getExtraData());
175 }
176 }
177
178 this->fault = this->staticInst->completeAcc(pkt, this, this->traceData);
179
180 this->thread->noSquashFromTC = no_squash_from_TC;
181
182 return this->fault;
183}
184
185template <class Impl>
186Fault
187BaseO3DynInst<Impl>::hwrei()
188{
189#if THE_ISA == ALPHA_ISA
190 // Can only do a hwrei when in pal mode.
191 if (!(this->instAddr() & 0x3))
192 return new AlphaISA::UnimplementedOpcodeFault;
193
194 // Set the next PC based on the value of the EXC_ADDR IPR.
195 AlphaISA::PCState pc = this->pcState();
196 pc.npc(this->cpu->readMiscRegNoEffect(AlphaISA::IPR_EXC_ADDR,
197 this->threadNumber));
198 this->pcState(pc);
199 if (CPA::available()) {
200 ThreadContext *tc = this->cpu->tcBase(this->threadNumber);
201 CPA::cpa()->swAutoBegin(tc, this->nextInstAddr());
202 }
203
204 // Tell CPU to clear any state it needs to if a hwrei is taken.
205 this->cpu->hwrei(this->threadNumber);
206#else
207
208#endif
209 // FIXME: XXX check for interrupts? XXX
210 return NoFault;
211}
212
213template <class Impl>
214void
215BaseO3DynInst<Impl>::trap(Fault fault)
216{
217 this->cpu->trap(fault, this->threadNumber, this->staticInst);
218}
219
220template <class Impl>
221bool
222BaseO3DynInst<Impl>::simPalCheck(int palFunc)
223{
224#if THE_ISA != ALPHA_ISA
225 panic("simPalCheck called, but PAL only exists in Alpha!\n");
226#endif
227 return this->cpu->simPalCheck(palFunc, this->threadNumber);
228}
229
230template <class Impl>
231void
232BaseO3DynInst<Impl>::syscall(int64_t callnum)
233{
234 if (FullSystem)
235 panic("Syscall emulation isn't available in FS mode.\n");
236
237 // HACK: check CPU's nextPC before and after syscall. If it
238 // changes, update this instruction's nextPC because the syscall
239 // must have changed the nextPC.
240 TheISA::PCState curPC = this->cpu->pcState(this->threadNumber);
241 this->cpu->syscall(callnum, this->threadNumber);
242 TheISA::PCState newPC = this->cpu->pcState(this->threadNumber);
243 if (!(curPC == newPC)) {
244 this->pcState(newPC);
245 }
246}
247
| 132#endif
133}
134
135template <class Impl>
136Fault
137BaseO3DynInst<Impl>::execute()
138{
139 // @todo: Pretty convoluted way to avoid squashing from happening
140 // when using the TC during an instruction's execution
141 // (specifically for instructions that have side-effects that use
142 // the TC). Fix this.
143 bool no_squash_from_TC = this->thread->noSquashFromTC;
144 this->thread->noSquashFromTC = true;
145
146 this->fault = this->staticInst->execute(this, this->traceData);
147
148 this->thread->noSquashFromTC = no_squash_from_TC;
149
150 return this->fault;
151}
152
153template <class Impl>
154Fault
155BaseO3DynInst<Impl>::initiateAcc()
156{
157 // @todo: Pretty convoluted way to avoid squashing from happening
158 // when using the TC during an instruction's execution
159 // (specifically for instructions that have side-effects that use
160 // the TC). Fix this.
161 bool no_squash_from_TC = this->thread->noSquashFromTC;
162 this->thread->noSquashFromTC = true;
163
164 this->fault = this->staticInst->initiateAcc(this, this->traceData);
165
166 this->thread->noSquashFromTC = no_squash_from_TC;
167
168 return this->fault;
169}
170
171template <class Impl>
172Fault
173BaseO3DynInst<Impl>::completeAcc(PacketPtr pkt)
174{
175 // @todo: Pretty convoluted way to avoid squashing from happening
176 // when using the TC during an instruction's execution
177 // (specifically for instructions that have side-effects that use
178 // the TC). Fix this.
179 bool no_squash_from_TC = this->thread->noSquashFromTC;
180 this->thread->noSquashFromTC = true;
181
182 if (this->cpu->checker) {
183 if (this->isStoreConditional()) {
184 this->reqToVerify->setExtraData(pkt->req->getExtraData());
185 }
186 }
187
188 this->fault = this->staticInst->completeAcc(pkt, this, this->traceData);
189
190 this->thread->noSquashFromTC = no_squash_from_TC;
191
192 return this->fault;
193}
194
195template <class Impl>
196Fault
197BaseO3DynInst<Impl>::hwrei()
198{
199#if THE_ISA == ALPHA_ISA
200 // Can only do a hwrei when in pal mode.
201 if (!(this->instAddr() & 0x3))
202 return new AlphaISA::UnimplementedOpcodeFault;
203
204 // Set the next PC based on the value of the EXC_ADDR IPR.
205 AlphaISA::PCState pc = this->pcState();
206 pc.npc(this->cpu->readMiscRegNoEffect(AlphaISA::IPR_EXC_ADDR,
207 this->threadNumber));
208 this->pcState(pc);
209 if (CPA::available()) {
210 ThreadContext *tc = this->cpu->tcBase(this->threadNumber);
211 CPA::cpa()->swAutoBegin(tc, this->nextInstAddr());
212 }
213
214 // Tell CPU to clear any state it needs to if a hwrei is taken.
215 this->cpu->hwrei(this->threadNumber);
216#else
217
218#endif
219 // FIXME: XXX check for interrupts? XXX
220 return NoFault;
221}
222
223template <class Impl>
224void
225BaseO3DynInst<Impl>::trap(Fault fault)
226{
227 this->cpu->trap(fault, this->threadNumber, this->staticInst);
228}
229
230template <class Impl>
231bool
232BaseO3DynInst<Impl>::simPalCheck(int palFunc)
233{
234#if THE_ISA != ALPHA_ISA
235 panic("simPalCheck called, but PAL only exists in Alpha!\n");
236#endif
237 return this->cpu->simPalCheck(palFunc, this->threadNumber);
238}
239
240template <class Impl>
241void
242BaseO3DynInst<Impl>::syscall(int64_t callnum)
243{
244 if (FullSystem)
245 panic("Syscall emulation isn't available in FS mode.\n");
246
247 // HACK: check CPU's nextPC before and after syscall. If it
248 // changes, update this instruction's nextPC because the syscall
249 // must have changed the nextPC.
250 TheISA::PCState curPC = this->cpu->pcState(this->threadNumber);
251 this->cpu->syscall(callnum, this->threadNumber);
252 TheISA::PCState newPC = this->cpu->pcState(this->threadNumber);
253 if (!(curPC == newPC)) {
254 this->pcState(newPC);
255 }
256}
257
|