1/*
2 * Copyright (c) 2011-2014,2017 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"
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 // If load_addr_mask is set to 0x0, then auto-calculate
162 // the smallest mask to cover all kernel addresses so gem5
163 // can relocate the kernel to a new offset.
164 if (loadAddrMask == 0) {
165 Addr shift_amt = findMsbSet(kernelEnd - kernelStart) + 1;
166 loadAddrMask = ((Addr)1 << shift_amt) - 1;
167 }
168
169 // load symbols
170 if (!kernel->loadGlobalSymbols(kernelSymtab))
171 fatal("could not load kernel symbols\n");
172
173 if (!kernel->loadLocalSymbols(kernelSymtab))
174 fatal("could not load kernel local symbols\n");
175
176 if (!kernel->loadGlobalSymbols(debugSymbolTable))
177 fatal("could not load kernel symbols\n");
178
179 if (!kernel->loadLocalSymbols(debugSymbolTable))
180 fatal("could not load kernel local symbols\n");
181
182 // Loading only needs to happen once and after memory system is
183 // connected so it will happen in initState()
184 }
185
186 for (const auto &obj_name : p->kernel_extras) {
187 inform("Loading additional kernel object: %s", obj_name);
188 ObjectFile *obj = createObjectFile(obj_name);
189 fatal_if(!obj, "Failed to additional kernel object '%s'.\n",
190 obj_name);
191 kernelExtras.push_back(obj);
192 }
193 }
194
195 // increment the number of running systems
196 numSystemsRunning++;
197
198 // Set back pointers to the system in all memories
199 for (int x = 0; x < params()->memories.size(); x++)
200 params()->memories[x]->system(this);
201}
202
203System::~System()
204{
205 delete kernelSymtab;
206 delete kernel;
207
208 for (uint32_t j = 0; j < numWorkIds; j++)
209 delete workItemStats[j];
210}
211
212void
213System::init()
214{
215 // check that the system port is connected
216 if (!_systemPort.isConnected())
217 panic("System port on %s is not connected.\n", name());
218}
219
220BaseMasterPort&
221System::getMasterPort(const std::string &if_name, PortID idx)
222{
223 // no need to distinguish at the moment (besides checking)
224 return _systemPort;
225}
226
227void
228System::setMemoryMode(Enums::MemoryMode mode)
229{
230 assert(drainState() == DrainState::Drained);
231 memoryMode = mode;
232}
233
234bool System::breakpoint()
235{
236 if (remoteGDB.size())
237 return remoteGDB[0]->breakpoint();
238 return false;
239}
240
241ContextID
242System::registerThreadContext(ThreadContext *tc, ContextID assigned)
243{
| 1/*
2 * Copyright (c) 2011-2014,2017 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"
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 // If load_addr_mask is set to 0x0, then auto-calculate
162 // the smallest mask to cover all kernel addresses so gem5
163 // can relocate the kernel to a new offset.
164 if (loadAddrMask == 0) {
165 Addr shift_amt = findMsbSet(kernelEnd - kernelStart) + 1;
166 loadAddrMask = ((Addr)1 << shift_amt) - 1;
167 }
168
169 // load symbols
170 if (!kernel->loadGlobalSymbols(kernelSymtab))
171 fatal("could not load kernel symbols\n");
172
173 if (!kernel->loadLocalSymbols(kernelSymtab))
174 fatal("could not load kernel local symbols\n");
175
176 if (!kernel->loadGlobalSymbols(debugSymbolTable))
177 fatal("could not load kernel symbols\n");
178
179 if (!kernel->loadLocalSymbols(debugSymbolTable))
180 fatal("could not load kernel local symbols\n");
181
182 // Loading only needs to happen once and after memory system is
183 // connected so it will happen in initState()
184 }
185
186 for (const auto &obj_name : p->kernel_extras) {
187 inform("Loading additional kernel object: %s", obj_name);
188 ObjectFile *obj = createObjectFile(obj_name);
189 fatal_if(!obj, "Failed to additional kernel object '%s'.\n",
190 obj_name);
191 kernelExtras.push_back(obj);
192 }
193 }
194
195 // increment the number of running systems
196 numSystemsRunning++;
197
198 // Set back pointers to the system in all memories
199 for (int x = 0; x < params()->memories.size(); x++)
200 params()->memories[x]->system(this);
201}
202
203System::~System()
204{
205 delete kernelSymtab;
206 delete kernel;
207
208 for (uint32_t j = 0; j < numWorkIds; j++)
209 delete workItemStats[j];
210}
211
212void
213System::init()
214{
215 // check that the system port is connected
216 if (!_systemPort.isConnected())
217 panic("System port on %s is not connected.\n", name());
218}
219
220BaseMasterPort&
221System::getMasterPort(const std::string &if_name, PortID idx)
222{
223 // no need to distinguish at the moment (besides checking)
224 return _systemPort;
225}
226
227void
228System::setMemoryMode(Enums::MemoryMode mode)
229{
230 assert(drainState() == DrainState::Drained);
231 memoryMode = mode;
232}
233
234bool System::breakpoint()
235{
236 if (remoteGDB.size())
237 return remoteGDB[0]->breakpoint();
238 return false;
239}
240
241ContextID
242System::registerThreadContext(ThreadContext *tc, ContextID assigned)
243{
|
262 threadContexts[id] = tc;
263 _numContexts++;
264
265#if THE_ISA != NULL_ISA
266 int port = getRemoteGDBPort();
267 if (port) {
268 RemoteGDB *rgdb = new RemoteGDB(this, tc);
269 GDBListener *gdbl = new GDBListener(rgdb, port + id);
270 gdbl->listen();
271
272 BaseCPU *cpu = tc->getCpuPtr();
273 if (cpu->waitForRemoteGDB()) {
274 inform("%s: Waiting for a remote GDB connection on port %d.\n",
275 cpu->name(), gdbl->getPort());
276
277 gdbl->accept();
278 }
279 if (remoteGDB.size() <= id) {
280 remoteGDB.resize(id + 1);
281 }
282
283 remoteGDB[id] = rgdb;
284 }
285#endif
286
287 activeCpus.push_back(false);
288
289 return id;
290}
291
292int
293System::numRunningContexts()
294{
295 int running = 0;
296 for (int i = 0; i < _numContexts; ++i) {
297 if (threadContexts[i]->status() != ThreadContext::Halted)
298 ++running;
299 }
300 return running;
301}
302
303void
304System::initState()
305{
306 if (FullSystem) {
307 for (int i = 0; i < threadContexts.size(); i++)
308 TheISA::startupCPU(threadContexts[i], i);
309 // Moved from the constructor to here since it relies on the
310 // address map being resolved in the interconnect
311 /**
312 * Load the kernel code into memory
313 */
314 if (params()->kernel != "") {
315 if (params()->kernel_addr_check) {
316 // Validate kernel mapping before loading binary
317 if (!(isMemAddr((kernelStart & loadAddrMask) +
318 loadAddrOffset) &&
319 isMemAddr((kernelEnd & loadAddrMask) +
320 loadAddrOffset))) {
321 fatal("Kernel is mapped to invalid location (not memory). "
322 "kernelStart 0x(%x) - kernelEnd 0x(%x) %#x:%#x\n",
323 kernelStart,
324 kernelEnd, (kernelStart & loadAddrMask) +
325 loadAddrOffset,
326 (kernelEnd & loadAddrMask) + loadAddrOffset);
327 }
328 }
329 // Load program sections into memory
330 kernel->loadSections(physProxy, loadAddrMask, loadAddrOffset);
331 for (const auto &extra_kernel : kernelExtras) {
332 extra_kernel->loadSections(physProxy, loadAddrMask,
333 loadAddrOffset);
334 }
335
336 DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
337 DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd);
338 DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
339 DPRINTF(Loader, "Kernel loaded...\n");
340 }
341 }
342}
343
344void
345System::replaceThreadContext(ThreadContext *tc, ContextID context_id)
346{
347 if (context_id >= threadContexts.size()) {
348 panic("replaceThreadContext: bad id, %d >= %d\n",
349 context_id, threadContexts.size());
350 }
351
352 threadContexts[context_id] = tc;
353 if (context_id < remoteGDB.size())
354 remoteGDB[context_id]->replaceThreadContext(tc);
355}
356
357bool
358System::validKvmEnvironment() const
359{
360#if USE_KVM
361 if (threadContexts.empty())
362 return false;
363
364 for (auto tc : threadContexts) {
365 if (dynamic_cast<BaseKvmCPU*>(tc->getCpuPtr()) == nullptr) {
366 return false;
367 }
368 }
369 return true;
370#else
371 return false;
372#endif
373}
374
375Addr
376System::allocPhysPages(int npages)
377{
378 Addr return_addr = pagePtr << PageShift;
379 pagePtr += npages;
380
381 Addr next_return_addr = pagePtr << PageShift;
382
383 AddrRange m5opRange(0xffff0000, 0xffffffff);
384 if (m5opRange.contains(next_return_addr)) {
385 warn("Reached m5ops MMIO region\n");
386 return_addr = 0xffffffff;
387 pagePtr = 0xffffffff >> PageShift;
388 }
389
390 if ((pagePtr << PageShift) > physmem.totalSize())
391 fatal("Out of memory, please increase size of physical memory.");
392 return return_addr;
393}
394
395Addr
396System::memSize() const
397{
398 return physmem.totalSize();
399}
400
401Addr
402System::freeMemSize() const
403{
404 return physmem.totalSize() - (pagePtr << PageShift);
405}
406
407bool
408System::isMemAddr(Addr addr) const
409{
410 return physmem.isMemAddr(addr);
411}
412
413void
414System::drainResume()
415{
416 totalNumInsts = 0;
417}
418
419void
420System::serialize(CheckpointOut &cp) const
421{
422 if (FullSystem)
423 kernelSymtab->serialize("kernel_symtab", cp);
424 SERIALIZE_SCALAR(pagePtr);
425 serializeSymtab(cp);
426
427 // also serialize the memories in the system
428 physmem.serializeSection(cp, "physmem");
429}
430
431
432void
433System::unserialize(CheckpointIn &cp)
434{
435 if (FullSystem)
436 kernelSymtab->unserialize("kernel_symtab", cp);
437 UNSERIALIZE_SCALAR(pagePtr);
438 unserializeSymtab(cp);
439
440 // also unserialize the memories in the system
441 physmem.unserializeSection(cp, "physmem");
442}
443
444void
445System::regStats()
446{
447 MemObject::regStats();
448
449 for (uint32_t j = 0; j < numWorkIds ; j++) {
450 workItemStats[j] = new Stats::Histogram();
451 stringstream namestr;
452 ccprintf(namestr, "work_item_type%d", j);
453 workItemStats[j]->init(20)
454 .name(name() + "." + namestr.str())
455 .desc("Run time stat for" + namestr.str())
456 .prereq(*workItemStats[j]);
457 }
458}
459
460void
461System::workItemEnd(uint32_t tid, uint32_t workid)
462{
463 std::pair<uint32_t,uint32_t> p(tid, workid);
464 if (!lastWorkItemStarted.count(p))
465 return;
466
467 Tick samp = curTick() - lastWorkItemStarted[p];
468 DPRINTF(WorkItems, "Work item end: %d\t%d\t%lld\n", tid, workid, samp);
469
470 if (workid >= numWorkIds)
471 fatal("Got workid greater than specified in system configuration\n");
472
473 workItemStats[workid]->sample(samp);
474 lastWorkItemStarted.erase(p);
475}
476
477void
478System::printSystems()
479{
480 ios::fmtflags flags(cerr.flags());
481
482 vector<System *>::iterator i = systemList.begin();
483 vector<System *>::iterator end = systemList.end();
484 for (; i != end; ++i) {
485 System *sys = *i;
486 cerr << "System " << sys->name() << ": " << hex << sys << endl;
487 }
488
489 cerr.flags(flags);
490}
491
492void
493printSystems()
494{
495 System::printSystems();
496}
497
498MasterID
499System::getMasterId(std::string master_name)
500{
501 // strip off system name if the string starts with it
502 if (startswith(master_name, name()))
503 master_name = master_name.erase(0, name().size() + 1);
504
505 // CPUs in switch_cpus ask for ids again after switching
506 for (int i = 0; i < masterIds.size(); i++) {
507 if (masterIds[i] == master_name) {
508 return i;
509 }
510 }
511
512 // Verify that the statistics haven't been enabled yet
513 // Otherwise objects will have sized their stat buckets and
514 // they will be too small
515
516 if (Stats::enabled()) {
517 fatal("Can't request a masterId after regStats(). "
518 "You must do so in init().\n");
519 }
520
521 masterIds.push_back(master_name);
522
523 return masterIds.size() - 1;
524}
525
526std::string
527System::getMasterName(MasterID master_id)
528{
529 if (master_id >= masterIds.size())
530 fatal("Invalid master_id passed to getMasterName()\n");
531
532 return masterIds[master_id];
533}
534
535System *
536SystemParams::create()
537{
538 return new System(this);
539}
| 258 threadContexts[id] = tc;
259 _numContexts++;
260
261#if THE_ISA != NULL_ISA
262 int port = getRemoteGDBPort();
263 if (port) {
264 RemoteGDB *rgdb = new RemoteGDB(this, tc);
265 GDBListener *gdbl = new GDBListener(rgdb, port + id);
266 gdbl->listen();
267
268 BaseCPU *cpu = tc->getCpuPtr();
269 if (cpu->waitForRemoteGDB()) {
270 inform("%s: Waiting for a remote GDB connection on port %d.\n",
271 cpu->name(), gdbl->getPort());
272
273 gdbl->accept();
274 }
275 if (remoteGDB.size() <= id) {
276 remoteGDB.resize(id + 1);
277 }
278
279 remoteGDB[id] = rgdb;
280 }
281#endif
282
283 activeCpus.push_back(false);
284
285 return id;
286}
287
288int
289System::numRunningContexts()
290{
291 int running = 0;
292 for (int i = 0; i < _numContexts; ++i) {
293 if (threadContexts[i]->status() != ThreadContext::Halted)
294 ++running;
295 }
296 return running;
297}
298
299void
300System::initState()
301{
302 if (FullSystem) {
303 for (int i = 0; i < threadContexts.size(); i++)
304 TheISA::startupCPU(threadContexts[i], i);
305 // Moved from the constructor to here since it relies on the
306 // address map being resolved in the interconnect
307 /**
308 * Load the kernel code into memory
309 */
310 if (params()->kernel != "") {
311 if (params()->kernel_addr_check) {
312 // Validate kernel mapping before loading binary
313 if (!(isMemAddr((kernelStart & loadAddrMask) +
314 loadAddrOffset) &&
315 isMemAddr((kernelEnd & loadAddrMask) +
316 loadAddrOffset))) {
317 fatal("Kernel is mapped to invalid location (not memory). "
318 "kernelStart 0x(%x) - kernelEnd 0x(%x) %#x:%#x\n",
319 kernelStart,
320 kernelEnd, (kernelStart & loadAddrMask) +
321 loadAddrOffset,
322 (kernelEnd & loadAddrMask) + loadAddrOffset);
323 }
324 }
325 // Load program sections into memory
326 kernel->loadSections(physProxy, loadAddrMask, loadAddrOffset);
327 for (const auto &extra_kernel : kernelExtras) {
328 extra_kernel->loadSections(physProxy, loadAddrMask,
329 loadAddrOffset);
330 }
331
332 DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
333 DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd);
334 DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
335 DPRINTF(Loader, "Kernel loaded...\n");
336 }
337 }
338}
339
340void
341System::replaceThreadContext(ThreadContext *tc, ContextID context_id)
342{
343 if (context_id >= threadContexts.size()) {
344 panic("replaceThreadContext: bad id, %d >= %d\n",
345 context_id, threadContexts.size());
346 }
347
348 threadContexts[context_id] = tc;
349 if (context_id < remoteGDB.size())
350 remoteGDB[context_id]->replaceThreadContext(tc);
351}
352
353bool
354System::validKvmEnvironment() const
355{
356#if USE_KVM
357 if (threadContexts.empty())
358 return false;
359
360 for (auto tc : threadContexts) {
361 if (dynamic_cast<BaseKvmCPU*>(tc->getCpuPtr()) == nullptr) {
362 return false;
363 }
364 }
365 return true;
366#else
367 return false;
368#endif
369}
370
371Addr
372System::allocPhysPages(int npages)
373{
374 Addr return_addr = pagePtr << PageShift;
375 pagePtr += npages;
376
377 Addr next_return_addr = pagePtr << PageShift;
378
379 AddrRange m5opRange(0xffff0000, 0xffffffff);
380 if (m5opRange.contains(next_return_addr)) {
381 warn("Reached m5ops MMIO region\n");
382 return_addr = 0xffffffff;
383 pagePtr = 0xffffffff >> PageShift;
384 }
385
386 if ((pagePtr << PageShift) > physmem.totalSize())
387 fatal("Out of memory, please increase size of physical memory.");
388 return return_addr;
389}
390
391Addr
392System::memSize() const
393{
394 return physmem.totalSize();
395}
396
397Addr
398System::freeMemSize() const
399{
400 return physmem.totalSize() - (pagePtr << PageShift);
401}
402
403bool
404System::isMemAddr(Addr addr) const
405{
406 return physmem.isMemAddr(addr);
407}
408
409void
410System::drainResume()
411{
412 totalNumInsts = 0;
413}
414
415void
416System::serialize(CheckpointOut &cp) const
417{
418 if (FullSystem)
419 kernelSymtab->serialize("kernel_symtab", cp);
420 SERIALIZE_SCALAR(pagePtr);
421 serializeSymtab(cp);
422
423 // also serialize the memories in the system
424 physmem.serializeSection(cp, "physmem");
425}
426
427
428void
429System::unserialize(CheckpointIn &cp)
430{
431 if (FullSystem)
432 kernelSymtab->unserialize("kernel_symtab", cp);
433 UNSERIALIZE_SCALAR(pagePtr);
434 unserializeSymtab(cp);
435
436 // also unserialize the memories in the system
437 physmem.unserializeSection(cp, "physmem");
438}
439
440void
441System::regStats()
442{
443 MemObject::regStats();
444
445 for (uint32_t j = 0; j < numWorkIds ; j++) {
446 workItemStats[j] = new Stats::Histogram();
447 stringstream namestr;
448 ccprintf(namestr, "work_item_type%d", j);
449 workItemStats[j]->init(20)
450 .name(name() + "." + namestr.str())
451 .desc("Run time stat for" + namestr.str())
452 .prereq(*workItemStats[j]);
453 }
454}
455
456void
457System::workItemEnd(uint32_t tid, uint32_t workid)
458{
459 std::pair<uint32_t,uint32_t> p(tid, workid);
460 if (!lastWorkItemStarted.count(p))
461 return;
462
463 Tick samp = curTick() - lastWorkItemStarted[p];
464 DPRINTF(WorkItems, "Work item end: %d\t%d\t%lld\n", tid, workid, samp);
465
466 if (workid >= numWorkIds)
467 fatal("Got workid greater than specified in system configuration\n");
468
469 workItemStats[workid]->sample(samp);
470 lastWorkItemStarted.erase(p);
471}
472
473void
474System::printSystems()
475{
476 ios::fmtflags flags(cerr.flags());
477
478 vector<System *>::iterator i = systemList.begin();
479 vector<System *>::iterator end = systemList.end();
480 for (; i != end; ++i) {
481 System *sys = *i;
482 cerr << "System " << sys->name() << ": " << hex << sys << endl;
483 }
484
485 cerr.flags(flags);
486}
487
488void
489printSystems()
490{
491 System::printSystems();
492}
493
494MasterID
495System::getMasterId(std::string master_name)
496{
497 // strip off system name if the string starts with it
498 if (startswith(master_name, name()))
499 master_name = master_name.erase(0, name().size() + 1);
500
501 // CPUs in switch_cpus ask for ids again after switching
502 for (int i = 0; i < masterIds.size(); i++) {
503 if (masterIds[i] == master_name) {
504 return i;
505 }
506 }
507
508 // Verify that the statistics haven't been enabled yet
509 // Otherwise objects will have sized their stat buckets and
510 // they will be too small
511
512 if (Stats::enabled()) {
513 fatal("Can't request a masterId after regStats(). "
514 "You must do so in init().\n");
515 }
516
517 masterIds.push_back(master_name);
518
519 return masterIds.size() - 1;
520}
521
522std::string
523System::getMasterName(MasterID master_id)
524{
525 if (master_id >= masterIds.size())
526 fatal("Invalid master_id passed to getMasterName()\n");
527
528 return masterIds[master_id];
529}
530
531System *
532SystemParams::create()
533{
534 return new System(this);
535}
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