1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "base/remote_gdb.hh"
#include "cpu/exec_context.hh"
#include "kern/kernel_stats.hh"
#include "mem/functional/memory_control.hh"
#include "mem/functional/physical.hh"
#include "arch/vtophys.hh"
#include "sim/builder.hh"
#include "arch/isa_traits.hh"
#include "sim/byteswap.hh"
#include "sim/system.hh"
#include "base/trace.hh"
using namespace std;
using namespace TheISA;
vector<System *> System::systemList;
int System::numSystemsRunning = 0;
System::System(Params *p)
: SimObject(p->name), memctrl(p->memctrl), physmem(p->physmem),
init_param(p->init_param), numcpus(0), _params(p)
{
// add self to global system list
systemList.push_back(this);
kernelSymtab = new SymbolTable;
debugSymbolTable = new SymbolTable;
/**
* Load the kernel code into memory
*/
// Load kernel code
kernel = createObjectFile(params()->kernel_path);
if (kernel == NULL)
fatal("Could not load kernel file %s", params()->kernel_path);
// Load program sections into memory
kernel->loadSections(physmem, true);
// setup entry points
kernelStart = kernel->textBase();
kernelEnd = kernel->bssBase() + kernel->bssSize();
kernelEntry = kernel->entryPoint();
// load symbols
if (!kernel->loadGlobalSymbols(kernelSymtab))
panic("could not load kernel symbols\n");
if (!kernel->loadLocalSymbols(kernelSymtab))
panic("could not load kernel local symbols\n");
if (!kernel->loadGlobalSymbols(debugSymbolTable))
panic("could not load kernel symbols\n");
if (!kernel->loadLocalSymbols(debugSymbolTable))
panic("could not load kernel local symbols\n");
DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd);
DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
DPRINTF(Loader, "Kernel loaded...\n");
// increment the number of running systms
numSystemsRunning++;
}
System::~System()
{
delete kernelSymtab;
delete kernel;
}
int rgdb_wait = -1;
int
System::registerExecContext(ExecContext *xc, int id)
{
if (id == -1) {
for (id = 0; id < execContexts.size(); id++) {
if (!execContexts[id])
break;
}
}
if (execContexts.size() <= id)
execContexts.resize(id + 1);
if (execContexts[id])
panic("Cannot have two CPUs with the same id (%d)\n", id);
execContexts[id] = xc;
numcpus++;
RemoteGDB *rgdb = new RemoteGDB(this, xc);
GDBListener *gdbl = new GDBListener(rgdb, 7000 + id);
gdbl->listen();
/**
* Uncommenting this line waits for a remote debugger to connect
* to the simulator before continuing.
*/
if (rgdb_wait != -1 && rgdb_wait == id)
gdbl->accept();
if (remoteGDB.size() <= id) {
remoteGDB.resize(id + 1);
}
remoteGDB[id] = rgdb;
return id;
}
void
System::startup()
{
int i;
for (i = 0; i < execContexts.size(); i++)
execContexts[i]->activate(0);
}
void
System::replaceExecContext(ExecContext *xc, int id)
{
if (id >= execContexts.size()) {
panic("replaceExecContext: bad id, %d >= %d\n",
id, execContexts.size());
}
execContexts[id] = xc;
remoteGDB[id]->replaceExecContext(xc);
}
void
System::serialize(ostream &os)
{
kernelSymtab->serialize("kernel_symtab", os);
}
void
System::unserialize(Checkpoint *cp, const string §ion)
{
kernelSymtab->unserialize("kernel_symtab", cp, section);
}
void
System::printSystems()
{
vector<System *>::iterator i = systemList.begin();
vector<System *>::iterator end = systemList.end();
for (; i != end; ++i) {
System *sys = *i;
cerr << "System " << sys->name() << ": " << hex << sys << endl;
}
}
extern "C"
void
printSystems()
{
System::printSystems();
}
DEFINE_SIM_OBJECT_CLASS_NAME("System", System)
|
