2 * Copyright (c) 2003-2006 The Regents of The University of Michigan
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.
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.
28 * Authors: Steve Reinhardt
34 #include "arch/isa_traits.hh"
35 #include "arch/remote_gdb.hh"
36 #include "arch/utility.hh"
37 #include "base/loader/object_file.hh"
38 #include "base/loader/symtab.hh"
39 #include "base/trace.hh"
40 #include "cpu/thread_context.hh"
41 #include "config/full_system.hh"
42 #include "config/the_isa.hh"
43 #include "mem/mem_object.hh"
44 #include "mem/physical.hh"
45 #include "sim/byteswap.hh"
46 #include "sim/system.hh"
47 #include "sim/debug.hh"
50 #include "arch/vtophys.hh"
51 #include "kern/kernel_stats.hh"
53 #include "params/System.hh"
57 using namespace TheISA
;
59 vector
<System
*> System::systemList
;
61 int System::numSystemsRunning
= 0;
63 System::System(Params
*p
)
64 : SimObject(p
), physmem(p
->physmem
), _numContexts(0),
66 init_param(p
->init_param
),
67 functionalPort(p
->name
+ "-fport"),
68 virtPort(p
->name
+ "-vport"),
73 memoryMode(p
->mem_mode
), _params(p
)
75 // add self to global system list
76 systemList
.push_back(this);
79 kernelSymtab
= new SymbolTable
;
80 if (!debugSymbolTable
)
81 debugSymbolTable
= new SymbolTable
;
85 * Get a functional port to memory
88 mem_port
= physmem
->getPort("functional");
89 functionalPort
.setPeer(mem_port
);
90 mem_port
->setPeer(&functionalPort
);
92 mem_port
= physmem
->getPort("functional");
93 virtPort
.setPeer(mem_port
);
94 mem_port
->setPeer(&virtPort
);
98 * Load the kernel code into memory
100 if (params()->kernel
== "") {
101 inform("No kernel set for full system simulation. Assuming you know what"
102 " you're doing...\n");
105 kernel
= createObjectFile(params()->kernel
);
106 inform("kernel located at: %s", params()->kernel
);
109 fatal("Could not load kernel file %s", params()->kernel
);
111 // Load program sections into memory
112 kernel
->loadSections(&functionalPort
, LoadAddrMask
);
114 // setup entry points
115 kernelStart
= kernel
->textBase();
116 kernelEnd
= kernel
->bssBase() + kernel
->bssSize();
117 kernelEntry
= kernel
->entryPoint();
120 if (!kernel
->loadGlobalSymbols(kernelSymtab
))
121 fatal("could not load kernel symbols\n");
123 if (!kernel
->loadLocalSymbols(kernelSymtab
))
124 fatal("could not load kernel local symbols\n");
126 if (!kernel
->loadGlobalSymbols(debugSymbolTable
))
127 fatal("could not load kernel symbols\n");
129 if (!kernel
->loadLocalSymbols(debugSymbolTable
))
130 fatal("could not load kernel local symbols\n");
132 DPRINTF(Loader
, "Kernel start = %#x\n", kernelStart
);
133 DPRINTF(Loader
, "Kernel end = %#x\n", kernelEnd
);
134 DPRINTF(Loader
, "Kernel entry = %#x\n", kernelEntry
);
135 DPRINTF(Loader
, "Kernel loaded...\n");
137 #endif // FULL_SYSTEM
139 // increment the number of running systms
149 panic("System::fixFuncEventAddr needs to be rewritten "
150 "to work with syscall emulation");
151 #endif // FULL_SYSTEM}
155 int rgdb_enable
= true;
158 System::setMemoryMode(Enums::MemoryMode mode
)
160 assert(getState() == Drained
);
164 bool System::breakpoint()
166 if (remoteGDB
.size())
167 return remoteGDB
[0]->breakpoint();
172 System::registerThreadContext(ThreadContext
*tc
, int assigned
)
175 if (assigned
== -1) {
176 for (id
= 0; id
< threadContexts
.size(); id
++) {
177 if (!threadContexts
[id
])
181 if (threadContexts
.size() <= id
)
182 threadContexts
.resize(id
+ 1);
184 if (threadContexts
.size() <= assigned
)
185 threadContexts
.resize(assigned
+ 1);
189 if (threadContexts
[id
])
190 fatal("Cannot have two CPUs with the same id (%d)\n", id
);
192 threadContexts
[id
] = tc
;
195 int port
= getRemoteGDBPort();
196 if (rgdb_enable
&& port
) {
197 RemoteGDB
*rgdb
= new RemoteGDB(this, tc
);
198 GDBListener
*gdbl
= new GDBListener(rgdb
, port
+ id
);
201 * Uncommenting this line waits for a remote debugger to
202 * connect to the simulator before continuing.
204 if (rgdb_wait
!= -1 && rgdb_wait
== id
)
207 if (remoteGDB
.size() <= id
) {
208 remoteGDB
.resize(id
+ 1);
211 remoteGDB
[id
] = rgdb
;
218 System::numRunningContexts()
221 for (int i
= 0; i
< _numContexts
; ++i
) {
222 if (threadContexts
[i
]->status() != ThreadContext::Halted
)
233 for (i
= 0; i
< threadContexts
.size(); i
++)
234 TheISA::startupCPU(threadContexts
[i
], i
);
239 System::replaceThreadContext(ThreadContext
*tc
, int context_id
)
241 if (context_id
>= threadContexts
.size()) {
242 panic("replaceThreadContext: bad id, %d >= %d\n",
243 context_id
, threadContexts
.size());
246 threadContexts
[context_id
] = tc
;
247 if (context_id
< remoteGDB
.size())
248 remoteGDB
[context_id
]->replaceThreadContext(tc
);
255 Addr return_addr
= page_ptr
<< LogVMPageSize
;
257 if (return_addr
>= physmem
->size())
258 fatal("Out of memory, please increase size of physical memory.");
265 return physmem
->size();
269 System::freeMemSize()
271 return physmem
->size() - (page_ptr
<< LogVMPageSize
);
277 System::serialize(ostream
&os
)
280 kernelSymtab
->serialize("kernel_symtab", os
);
281 #else // !FULL_SYSTEM
282 SERIALIZE_SCALAR(page_ptr
);
288 System::unserialize(Checkpoint
*cp
, const string
§ion
)
291 kernelSymtab
->unserialize("kernel_symtab", cp
, section
);
292 #else // !FULL_SYSTEM
293 UNSERIALIZE_SCALAR(page_ptr
);
298 System::printSystems()
300 vector
<System
*>::iterator i
= systemList
.begin();
301 vector
<System
*>::iterator end
= systemList
.end();
302 for (; i
!= end
; ++i
) {
304 cerr
<< "System " << sys
->name() << ": " << hex
<< sys
<< endl
;
311 System::printSystems();
314 const char *System::MemoryModeStrings
[3] = {"invalid", "atomic",
320 SystemParams::create()
322 return new System(this);