1/*
2 * Copyright (c) 2011-2014 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) 2003-2006 The Regents of The University of Michigan
15 * Copyright (c) 2011 Regents of the University of California
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Steve Reinhardt
42 * Lisa Hsu
43 * Nathan Binkert
44 * Ali Saidi
45 * Rick Strong
46 */
47
48#include "sim/system.hh"
49
50#include "arch/remote_gdb.hh"
51#include "arch/utility.hh"
52#include "base/loader/object_file.hh"
53#include "base/loader/symtab.hh"
54#include "base/str.hh"
55#include "base/trace.hh"
56#include "config/use_kvm.hh"
57#if USE_KVM
58#include "cpu/kvm/base.hh"
59#include "cpu/kvm/vm.hh"
60#endif
| 1/*
2 * Copyright (c) 2011-2014 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) 2003-2006 The Regents of The University of Michigan
15 * Copyright (c) 2011 Regents of the University of California
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Steve Reinhardt
42 * Lisa Hsu
43 * Nathan Binkert
44 * Ali Saidi
45 * Rick Strong
46 */
47
48#include "sim/system.hh"
49
50#include "arch/remote_gdb.hh"
51#include "arch/utility.hh"
52#include "base/loader/object_file.hh"
53#include "base/loader/symtab.hh"
54#include "base/str.hh"
55#include "base/trace.hh"
56#include "config/use_kvm.hh"
57#if USE_KVM
58#include "cpu/kvm/base.hh"
59#include "cpu/kvm/vm.hh"
60#endif
|
| 61#include "cpu/base.hh"
|
61#include "cpu/thread_context.hh"
62#include "debug/Loader.hh"
63#include "debug/WorkItems.hh"
64#include "mem/abstract_mem.hh"
65#include "mem/physical.hh"
66#include "params/System.hh"
67#include "sim/byteswap.hh"
68#include "sim/debug.hh"
69#include "sim/full_system.hh"
70
71/**
72 * To avoid linking errors with LTO, only include the header if we
73 * actually have a definition.
74 */
75#if THE_ISA != NULL_ISA
76#include "kern/kernel_stats.hh"
77
78#endif
79
80using namespace std;
81using namespace TheISA;
82
83vector<System *> System::systemList;
84
85int System::numSystemsRunning = 0;
86
87System::System(Params *p)
88 : MemObject(p), _systemPort("system_port", this),
89 _numContexts(0),
90 multiThread(p->multi_thread),
91 pagePtr(0),
92 init_param(p->init_param),
93 physProxy(_systemPort, p->cache_line_size),
94 kernelSymtab(nullptr),
95 kernel(nullptr),
96 loadAddrMask(p->load_addr_mask),
97 loadAddrOffset(p->load_offset),
98#if USE_KVM
99 kvmVM(p->kvm_vm),
100#else
101 kvmVM(nullptr),
102#endif
103 physmem(name() + ".physmem", p->memories, p->mmap_using_noreserve),
104 memoryMode(p->mem_mode),
105 _cacheLineSize(p->cache_line_size),
106 workItemsBegin(0),
107 workItemsEnd(0),
108 numWorkIds(p->num_work_ids),
109 thermalModel(p->thermal_model),
110 _params(p),
111 totalNumInsts(0),
112 instEventQueue("system instruction-based event queue")
113{
114 // add self to global system list
115 systemList.push_back(this);
116
117#if USE_KVM
118 if (kvmVM) {
119 kvmVM->setSystem(this);
120 }
121#endif
122
123 if (FullSystem) {
124 kernelSymtab = new SymbolTable;
125 if (!debugSymbolTable)
126 debugSymbolTable = new SymbolTable;
127 }
128
129 // check if the cache line size is a value known to work
130 if (!(_cacheLineSize == 16 || _cacheLineSize == 32 ||
131 _cacheLineSize == 64 || _cacheLineSize == 128))
132 warn_once("Cache line size is neither 16, 32, 64 nor 128 bytes.\n");
133
134 // Get the generic system master IDs
135 MasterID tmp_id M5_VAR_USED;
136 tmp_id = getMasterId("writebacks");
137 assert(tmp_id == Request::wbMasterId);
138 tmp_id = getMasterId("functional");
139 assert(tmp_id == Request::funcMasterId);
140 tmp_id = getMasterId("interrupt");
141 assert(tmp_id == Request::intMasterId);
142
143 if (FullSystem) {
144 if (params()->kernel == "") {
145 inform("No kernel set for full system simulation. "
146 "Assuming you know what you're doing\n");
147 } else {
148 // Get the kernel code
149 kernel = createObjectFile(params()->kernel);
150 inform("kernel located at: %s", params()->kernel);
151
152 if (kernel == NULL)
153 fatal("Could not load kernel file %s", params()->kernel);
154
155 // setup entry points
156 kernelStart = kernel->textBase();
157 kernelEnd = kernel->bssBase() + kernel->bssSize();
158 kernelEntry = kernel->entryPoint();
159
160 // load symbols
161 if (!kernel->loadGlobalSymbols(kernelSymtab))
162 fatal("could not load kernel symbols\n");
163
164 if (!kernel->loadLocalSymbols(kernelSymtab))
165 fatal("could not load kernel local symbols\n");
166
167 if (!kernel->loadGlobalSymbols(debugSymbolTable))
168 fatal("could not load kernel symbols\n");
169
170 if (!kernel->loadLocalSymbols(debugSymbolTable))
171 fatal("could not load kernel local symbols\n");
172
173 // Loading only needs to happen once and after memory system is
174 // connected so it will happen in initState()
175 }
176 }
177
178 // increment the number of running systems
179 numSystemsRunning++;
180
181 // Set back pointers to the system in all memories
182 for (int x = 0; x < params()->memories.size(); x++)
183 params()->memories[x]->system(this);
184}
185
186System::~System()
187{
188 delete kernelSymtab;
189 delete kernel;
190
191 for (uint32_t j = 0; j < numWorkIds; j++)
192 delete workItemStats[j];
193}
194
195void
196System::init()
197{
198 // check that the system port is connected
199 if (!_systemPort.isConnected())
200 panic("System port on %s is not connected.\n", name());
201}
202
203BaseMasterPort&
204System::getMasterPort(const std::string &if_name, PortID idx)
205{
206 // no need to distinguish at the moment (besides checking)
207 return _systemPort;
208}
209
210void
211System::setMemoryMode(Enums::MemoryMode mode)
212{
213 assert(drainState() == DrainState::Drained);
214 memoryMode = mode;
215}
216
217bool System::breakpoint()
218{
219 if (remoteGDB.size())
220 return remoteGDB[0]->breakpoint();
221 return false;
222}
223
| 62#include "cpu/thread_context.hh"
63#include "debug/Loader.hh"
64#include "debug/WorkItems.hh"
65#include "mem/abstract_mem.hh"
66#include "mem/physical.hh"
67#include "params/System.hh"
68#include "sim/byteswap.hh"
69#include "sim/debug.hh"
70#include "sim/full_system.hh"
71
72/**
73 * To avoid linking errors with LTO, only include the header if we
74 * actually have a definition.
75 */
76#if THE_ISA != NULL_ISA
77#include "kern/kernel_stats.hh"
78
79#endif
80
81using namespace std;
82using namespace TheISA;
83
84vector<System *> System::systemList;
85
86int System::numSystemsRunning = 0;
87
88System::System(Params *p)
89 : MemObject(p), _systemPort("system_port", this),
90 _numContexts(0),
91 multiThread(p->multi_thread),
92 pagePtr(0),
93 init_param(p->init_param),
94 physProxy(_systemPort, p->cache_line_size),
95 kernelSymtab(nullptr),
96 kernel(nullptr),
97 loadAddrMask(p->load_addr_mask),
98 loadAddrOffset(p->load_offset),
99#if USE_KVM
100 kvmVM(p->kvm_vm),
101#else
102 kvmVM(nullptr),
103#endif
104 physmem(name() + ".physmem", p->memories, p->mmap_using_noreserve),
105 memoryMode(p->mem_mode),
106 _cacheLineSize(p->cache_line_size),
107 workItemsBegin(0),
108 workItemsEnd(0),
109 numWorkIds(p->num_work_ids),
110 thermalModel(p->thermal_model),
111 _params(p),
112 totalNumInsts(0),
113 instEventQueue("system instruction-based event queue")
114{
115 // add self to global system list
116 systemList.push_back(this);
117
118#if USE_KVM
119 if (kvmVM) {
120 kvmVM->setSystem(this);
121 }
122#endif
123
124 if (FullSystem) {
125 kernelSymtab = new SymbolTable;
126 if (!debugSymbolTable)
127 debugSymbolTable = new SymbolTable;
128 }
129
130 // check if the cache line size is a value known to work
131 if (!(_cacheLineSize == 16 || _cacheLineSize == 32 ||
132 _cacheLineSize == 64 || _cacheLineSize == 128))
133 warn_once("Cache line size is neither 16, 32, 64 nor 128 bytes.\n");
134
135 // Get the generic system master IDs
136 MasterID tmp_id M5_VAR_USED;
137 tmp_id = getMasterId("writebacks");
138 assert(tmp_id == Request::wbMasterId);
139 tmp_id = getMasterId("functional");
140 assert(tmp_id == Request::funcMasterId);
141 tmp_id = getMasterId("interrupt");
142 assert(tmp_id == Request::intMasterId);
143
144 if (FullSystem) {
145 if (params()->kernel == "") {
146 inform("No kernel set for full system simulation. "
147 "Assuming you know what you're doing\n");
148 } else {
149 // Get the kernel code
150 kernel = createObjectFile(params()->kernel);
151 inform("kernel located at: %s", params()->kernel);
152
153 if (kernel == NULL)
154 fatal("Could not load kernel file %s", params()->kernel);
155
156 // setup entry points
157 kernelStart = kernel->textBase();
158 kernelEnd = kernel->bssBase() + kernel->bssSize();
159 kernelEntry = kernel->entryPoint();
160
161 // load symbols
162 if (!kernel->loadGlobalSymbols(kernelSymtab))
163 fatal("could not load kernel symbols\n");
164
165 if (!kernel->loadLocalSymbols(kernelSymtab))
166 fatal("could not load kernel local symbols\n");
167
168 if (!kernel->loadGlobalSymbols(debugSymbolTable))
169 fatal("could not load kernel symbols\n");
170
171 if (!kernel->loadLocalSymbols(debugSymbolTable))
172 fatal("could not load kernel local symbols\n");
173
174 // Loading only needs to happen once and after memory system is
175 // connected so it will happen in initState()
176 }
177 }
178
179 // increment the number of running systems
180 numSystemsRunning++;
181
182 // Set back pointers to the system in all memories
183 for (int x = 0; x < params()->memories.size(); x++)
184 params()->memories[x]->system(this);
185}
186
187System::~System()
188{
189 delete kernelSymtab;
190 delete kernel;
191
192 for (uint32_t j = 0; j < numWorkIds; j++)
193 delete workItemStats[j];
194}
195
196void
197System::init()
198{
199 // check that the system port is connected
200 if (!_systemPort.isConnected())
201 panic("System port on %s is not connected.\n", name());
202}
203
204BaseMasterPort&
205System::getMasterPort(const std::string &if_name, PortID idx)
206{
207 // no need to distinguish at the moment (besides checking)
208 return _systemPort;
209}
210
211void
212System::setMemoryMode(Enums::MemoryMode mode)
213{
214 assert(drainState() == DrainState::Drained);
215 memoryMode = mode;
216}
217
218bool System::breakpoint()
219{
220 if (remoteGDB.size())
221 return remoteGDB[0]->breakpoint();
222 return false;
223}
224
|
224/**
225 * Setting rgdb_wait to a positive integer waits for a remote debugger to
226 * connect to that context ID before continuing. This should really
227 be a parameter on the CPU object or something...
228 */
229int rgdb_wait = -1;
230
| |
231ContextID
232System::registerThreadContext(ThreadContext *tc, ContextID assigned)
233{
234 int id;
235 if (assigned == InvalidContextID) {
236 for (id = 0; id < threadContexts.size(); id++) {
237 if (!threadContexts[id])
238 break;
239 }
240
241 if (threadContexts.size() <= id)
242 threadContexts.resize(id + 1);
243 } else {
244 if (threadContexts.size() <= assigned)
245 threadContexts.resize(assigned + 1);
246 id = assigned;
247 }
248
249 if (threadContexts[id])
250 fatal("Cannot have two CPUs with the same id (%d)\n", id);
251
252 threadContexts[id] = tc;
253 _numContexts++;
254
255#if THE_ISA != NULL_ISA
256 int port = getRemoteGDBPort();
257 if (port) {
258 RemoteGDB *rgdb = new RemoteGDB(this, tc);
259 GDBListener *gdbl = new GDBListener(rgdb, port + id);
260 gdbl->listen();
261
| 225ContextID
226System::registerThreadContext(ThreadContext *tc, ContextID assigned)
227{
228 int id;
229 if (assigned == InvalidContextID) {
230 for (id = 0; id < threadContexts.size(); id++) {
231 if (!threadContexts[id])
232 break;
233 }
234
235 if (threadContexts.size() <= id)
236 threadContexts.resize(id + 1);
237 } else {
238 if (threadContexts.size() <= assigned)
239 threadContexts.resize(assigned + 1);
240 id = assigned;
241 }
242
243 if (threadContexts[id])
244 fatal("Cannot have two CPUs with the same id (%d)\n", id);
245
246 threadContexts[id] = tc;
247 _numContexts++;
248
249#if THE_ISA != NULL_ISA
250 int port = getRemoteGDBPort();
251 if (port) {
252 RemoteGDB *rgdb = new RemoteGDB(this, tc);
253 GDBListener *gdbl = new GDBListener(rgdb, port + id);
254 gdbl->listen();
255
|
262 if (rgdb_wait != -1 && rgdb_wait == id)
263 gdbl->accept();
| 256 BaseCPU *cpu = tc->getCpuPtr();
257 if (cpu->waitForRemoteGDB()) {
258 inform("%s: Waiting for a remote GDB connection on port %d.\n",
259 cpu->name(), gdbl->getPort());
|
264
| 260
|
| 261 gdbl->accept();
262 }
|
265 if (remoteGDB.size() <= id) {
266 remoteGDB.resize(id + 1);
267 }
268
269 remoteGDB[id] = rgdb;
270 }
271#endif
272
273 activeCpus.push_back(false);
274
275 return id;
276}
277
278int
279System::numRunningContexts()
280{
281 int running = 0;
282 for (int i = 0; i < _numContexts; ++i) {
283 if (threadContexts[i]->status() != ThreadContext::Halted)
284 ++running;
285 }
286 return running;
287}
288
289void
290System::initState()
291{
292 if (FullSystem) {
293 for (int i = 0; i < threadContexts.size(); i++)
294 TheISA::startupCPU(threadContexts[i], i);
295 // Moved from the constructor to here since it relies on the
296 // address map being resolved in the interconnect
297 /**
298 * Load the kernel code into memory
299 */
300 if (params()->kernel != "") {
301 if (params()->kernel_addr_check) {
302 // Validate kernel mapping before loading binary
303 if (!(isMemAddr((kernelStart & loadAddrMask) +
304 loadAddrOffset) &&
305 isMemAddr((kernelEnd & loadAddrMask) +
306 loadAddrOffset))) {
307 fatal("Kernel is mapped to invalid location (not memory). "
308 "kernelStart 0x(%x) - kernelEnd 0x(%x) %#x:%#x\n",
309 kernelStart,
310 kernelEnd, (kernelStart & loadAddrMask) +
311 loadAddrOffset,
312 (kernelEnd & loadAddrMask) + loadAddrOffset);
313 }
314 }
315 // Load program sections into memory
316 kernel->loadSections(physProxy, loadAddrMask, loadAddrOffset);
317
318 DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
319 DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd);
320 DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
321 DPRINTF(Loader, "Kernel loaded...\n");
322 }
323 }
324}
325
326void
327System::replaceThreadContext(ThreadContext *tc, ContextID context_id)
328{
329 if (context_id >= threadContexts.size()) {
330 panic("replaceThreadContext: bad id, %d >= %d\n",
331 context_id, threadContexts.size());
332 }
333
334 threadContexts[context_id] = tc;
335 if (context_id < remoteGDB.size())
336 remoteGDB[context_id]->replaceThreadContext(tc);
337}
338
339bool
340System::validKvmEnvironment() const
341{
342#if USE_KVM
343 if (threadContexts.empty())
344 return false;
345
346 for (auto tc : threadContexts) {
347 if (dynamic_cast<BaseKvmCPU*>(tc->getCpuPtr()) == nullptr) {
348 return false;
349 }
350 }
351 return true;
352#else
353 return false;
354#endif
355}
356
357Addr
358System::allocPhysPages(int npages)
359{
360 Addr return_addr = pagePtr << PageShift;
361 pagePtr += npages;
362
363 Addr next_return_addr = pagePtr << PageShift;
364
365 AddrRange m5opRange(0xffff0000, 0xffffffff);
366 if (m5opRange.contains(next_return_addr)) {
367 warn("Reached m5ops MMIO region\n");
368 return_addr = 0xffffffff;
369 pagePtr = 0xffffffff >> PageShift;
370 }
371
372 if ((pagePtr << PageShift) > physmem.totalSize())
373 fatal("Out of memory, please increase size of physical memory.");
374 return return_addr;
375}
376
377Addr
378System::memSize() const
379{
380 return physmem.totalSize();
381}
382
383Addr
384System::freeMemSize() const
385{
386 return physmem.totalSize() - (pagePtr << PageShift);
387}
388
389bool
390System::isMemAddr(Addr addr) const
391{
392 return physmem.isMemAddr(addr);
393}
394
395void
396System::drainResume()
397{
398 totalNumInsts = 0;
399}
400
401void
402System::serialize(CheckpointOut &cp) const
403{
404 if (FullSystem)
405 kernelSymtab->serialize("kernel_symtab", cp);
406 SERIALIZE_SCALAR(pagePtr);
407 serializeSymtab(cp);
408
409 // also serialize the memories in the system
410 physmem.serializeSection(cp, "physmem");
411}
412
413
414void
415System::unserialize(CheckpointIn &cp)
416{
417 if (FullSystem)
418 kernelSymtab->unserialize("kernel_symtab", cp);
419 UNSERIALIZE_SCALAR(pagePtr);
420 unserializeSymtab(cp);
421
422 // also unserialize the memories in the system
423 physmem.unserializeSection(cp, "physmem");
424}
425
426void
427System::regStats()
428{
429 MemObject::regStats();
430
431 for (uint32_t j = 0; j < numWorkIds ; j++) {
432 workItemStats[j] = new Stats::Histogram();
433 stringstream namestr;
434 ccprintf(namestr, "work_item_type%d", j);
435 workItemStats[j]->init(20)
436 .name(name() + "." + namestr.str())
437 .desc("Run time stat for" + namestr.str())
438 .prereq(*workItemStats[j]);
439 }
440}
441
442void
443System::workItemEnd(uint32_t tid, uint32_t workid)
444{
445 std::pair<uint32_t,uint32_t> p(tid, workid);
446 if (!lastWorkItemStarted.count(p))
447 return;
448
449 Tick samp = curTick() - lastWorkItemStarted[p];
450 DPRINTF(WorkItems, "Work item end: %d\t%d\t%lld\n", tid, workid, samp);
451
452 if (workid >= numWorkIds)
453 fatal("Got workid greater than specified in system configuration\n");
454
455 workItemStats[workid]->sample(samp);
456 lastWorkItemStarted.erase(p);
457}
458
459void
460System::printSystems()
461{
462 ios::fmtflags flags(cerr.flags());
463
464 vector<System *>::iterator i = systemList.begin();
465 vector<System *>::iterator end = systemList.end();
466 for (; i != end; ++i) {
467 System *sys = *i;
468 cerr << "System " << sys->name() << ": " << hex << sys << endl;
469 }
470
471 cerr.flags(flags);
472}
473
474void
475printSystems()
476{
477 System::printSystems();
478}
479
480MasterID
481System::getMasterId(std::string master_name)
482{
483 // strip off system name if the string starts with it
484 if (startswith(master_name, name()))
485 master_name = master_name.erase(0, name().size() + 1);
486
487 // CPUs in switch_cpus ask for ids again after switching
488 for (int i = 0; i < masterIds.size(); i++) {
489 if (masterIds[i] == master_name) {
490 return i;
491 }
492 }
493
494 // Verify that the statistics haven't been enabled yet
495 // Otherwise objects will have sized their stat buckets and
496 // they will be too small
497
498 if (Stats::enabled()) {
499 fatal("Can't request a masterId after regStats(). "
500 "You must do so in init().\n");
501 }
502
503 masterIds.push_back(master_name);
504
505 return masterIds.size() - 1;
506}
507
508std::string
509System::getMasterName(MasterID master_id)
510{
511 if (master_id >= masterIds.size())
512 fatal("Invalid master_id passed to getMasterName()\n");
513
514 return masterIds[master_id];
515}
516
517System *
518SystemParams::create()
519{
520 return new System(this);
521}
| 263 if (remoteGDB.size() <= id) {
264 remoteGDB.resize(id + 1);
265 }
266
267 remoteGDB[id] = rgdb;
268 }
269#endif
270
271 activeCpus.push_back(false);
272
273 return id;
274}
275
276int
277System::numRunningContexts()
278{
279 int running = 0;
280 for (int i = 0; i < _numContexts; ++i) {
281 if (threadContexts[i]->status() != ThreadContext::Halted)
282 ++running;
283 }
284 return running;
285}
286
287void
288System::initState()
289{
290 if (FullSystem) {
291 for (int i = 0; i < threadContexts.size(); i++)
292 TheISA::startupCPU(threadContexts[i], i);
293 // Moved from the constructor to here since it relies on the
294 // address map being resolved in the interconnect
295 /**
296 * Load the kernel code into memory
297 */
298 if (params()->kernel != "") {
299 if (params()->kernel_addr_check) {
300 // Validate kernel mapping before loading binary
301 if (!(isMemAddr((kernelStart & loadAddrMask) +
302 loadAddrOffset) &&
303 isMemAddr((kernelEnd & loadAddrMask) +
304 loadAddrOffset))) {
305 fatal("Kernel is mapped to invalid location (not memory). "
306 "kernelStart 0x(%x) - kernelEnd 0x(%x) %#x:%#x\n",
307 kernelStart,
308 kernelEnd, (kernelStart & loadAddrMask) +
309 loadAddrOffset,
310 (kernelEnd & loadAddrMask) + loadAddrOffset);
311 }
312 }
313 // Load program sections into memory
314 kernel->loadSections(physProxy, loadAddrMask, loadAddrOffset);
315
316 DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
317 DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd);
318 DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
319 DPRINTF(Loader, "Kernel loaded...\n");
320 }
321 }
322}
323
324void
325System::replaceThreadContext(ThreadContext *tc, ContextID context_id)
326{
327 if (context_id >= threadContexts.size()) {
328 panic("replaceThreadContext: bad id, %d >= %d\n",
329 context_id, threadContexts.size());
330 }
331
332 threadContexts[context_id] = tc;
333 if (context_id < remoteGDB.size())
334 remoteGDB[context_id]->replaceThreadContext(tc);
335}
336
337bool
338System::validKvmEnvironment() const
339{
340#if USE_KVM
341 if (threadContexts.empty())
342 return false;
343
344 for (auto tc : threadContexts) {
345 if (dynamic_cast<BaseKvmCPU*>(tc->getCpuPtr()) == nullptr) {
346 return false;
347 }
348 }
349 return true;
350#else
351 return false;
352#endif
353}
354
355Addr
356System::allocPhysPages(int npages)
357{
358 Addr return_addr = pagePtr << PageShift;
359 pagePtr += npages;
360
361 Addr next_return_addr = pagePtr << PageShift;
362
363 AddrRange m5opRange(0xffff0000, 0xffffffff);
364 if (m5opRange.contains(next_return_addr)) {
365 warn("Reached m5ops MMIO region\n");
366 return_addr = 0xffffffff;
367 pagePtr = 0xffffffff >> PageShift;
368 }
369
370 if ((pagePtr << PageShift) > physmem.totalSize())
371 fatal("Out of memory, please increase size of physical memory.");
372 return return_addr;
373}
374
375Addr
376System::memSize() const
377{
378 return physmem.totalSize();
379}
380
381Addr
382System::freeMemSize() const
383{
384 return physmem.totalSize() - (pagePtr << PageShift);
385}
386
387bool
388System::isMemAddr(Addr addr) const
389{
390 return physmem.isMemAddr(addr);
391}
392
393void
394System::drainResume()
395{
396 totalNumInsts = 0;
397}
398
399void
400System::serialize(CheckpointOut &cp) const
401{
402 if (FullSystem)
403 kernelSymtab->serialize("kernel_symtab", cp);
404 SERIALIZE_SCALAR(pagePtr);
405 serializeSymtab(cp);
406
407 // also serialize the memories in the system
408 physmem.serializeSection(cp, "physmem");
409}
410
411
412void
413System::unserialize(CheckpointIn &cp)
414{
415 if (FullSystem)
416 kernelSymtab->unserialize("kernel_symtab", cp);
417 UNSERIALIZE_SCALAR(pagePtr);
418 unserializeSymtab(cp);
419
420 // also unserialize the memories in the system
421 physmem.unserializeSection(cp, "physmem");
422}
423
424void
425System::regStats()
426{
427 MemObject::regStats();
428
429 for (uint32_t j = 0; j < numWorkIds ; j++) {
430 workItemStats[j] = new Stats::Histogram();
431 stringstream namestr;
432 ccprintf(namestr, "work_item_type%d", j);
433 workItemStats[j]->init(20)
434 .name(name() + "." + namestr.str())
435 .desc("Run time stat for" + namestr.str())
436 .prereq(*workItemStats[j]);
437 }
438}
439
440void
441System::workItemEnd(uint32_t tid, uint32_t workid)
442{
443 std::pair<uint32_t,uint32_t> p(tid, workid);
444 if (!lastWorkItemStarted.count(p))
445 return;
446
447 Tick samp = curTick() - lastWorkItemStarted[p];
448 DPRINTF(WorkItems, "Work item end: %d\t%d\t%lld\n", tid, workid, samp);
449
450 if (workid >= numWorkIds)
451 fatal("Got workid greater than specified in system configuration\n");
452
453 workItemStats[workid]->sample(samp);
454 lastWorkItemStarted.erase(p);
455}
456
457void
458System::printSystems()
459{
460 ios::fmtflags flags(cerr.flags());
461
462 vector<System *>::iterator i = systemList.begin();
463 vector<System *>::iterator end = systemList.end();
464 for (; i != end; ++i) {
465 System *sys = *i;
466 cerr << "System " << sys->name() << ": " << hex << sys << endl;
467 }
468
469 cerr.flags(flags);
470}
471
472void
473printSystems()
474{
475 System::printSystems();
476}
477
478MasterID
479System::getMasterId(std::string master_name)
480{
481 // strip off system name if the string starts with it
482 if (startswith(master_name, name()))
483 master_name = master_name.erase(0, name().size() + 1);
484
485 // CPUs in switch_cpus ask for ids again after switching
486 for (int i = 0; i < masterIds.size(); i++) {
487 if (masterIds[i] == master_name) {
488 return i;
489 }
490 }
491
492 // Verify that the statistics haven't been enabled yet
493 // Otherwise objects will have sized their stat buckets and
494 // they will be too small
495
496 if (Stats::enabled()) {
497 fatal("Can't request a masterId after regStats(). "
498 "You must do so in init().\n");
499 }
500
501 masterIds.push_back(master_name);
502
503 return masterIds.size() - 1;
504}
505
506std::string
507System::getMasterName(MasterID master_id)
508{
509 if (master_id >= masterIds.size())
510 fatal("Invalid master_id passed to getMasterName()\n");
511
512 return masterIds[master_id];
513}
514
515System *
516SystemParams::create()
517{
518 return new System(this);
519}
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