1/*
2 * Copyright (c) 2001-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
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.
15 *
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.
27 *
28 * Authors: Nathan Binkert
29 * Steve Reinhardt
30 */
31
32#ifndef __PROCESS_HH__
33#define __PROCESS_HH__
34
35//
36// The purpose of this code is to fake the loader & syscall mechanism
37// when there's no OS: thus there's no reason to use it in FULL_SYSTEM
38// mode when we do have an OS.
39//
40#include "config/full_system.hh"
41
42#if !FULL_SYSTEM
43
| 1/*
2 * Copyright (c) 2001-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
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.
15 *
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.
27 *
28 * Authors: Nathan Binkert
29 * Steve Reinhardt
30 */
31
32#ifndef __PROCESS_HH__
33#define __PROCESS_HH__
34
35//
36// The purpose of this code is to fake the loader & syscall mechanism
37// when there's no OS: thus there's no reason to use it in FULL_SYSTEM
38// mode when we do have an OS.
39//
40#include "config/full_system.hh"
41
42#if !FULL_SYSTEM
43
|
65class Process : public SimObject
66{
67 public:
68
69 /// Pointer to object representing the system this process is
70 /// running on.
71 System *system;
72
73 // have we initialized a thread context from this process? If
74 // yes, subsequent contexts are assumed to be for dynamically
75 // created threads and are not initialized.
76 bool initialContextLoaded;
77
78 // thread contexts associated with this process
79 std::vector<ThreadContext *> threadContexts;
80
81 // remote gdb objects
82 std::vector<TheISA::RemoteGDB *> remoteGDB;
83 std::vector<GDBListener *> gdbListen;
84 bool breakpoint();
85
86 // number of CPUs (esxec contexts, really) assigned to this process.
87 unsigned int numCpus() { return threadContexts.size(); }
88
89 // record of blocked context
90 struct WaitRec
91 {
92 Addr waitChan;
93 ThreadContext *waitingContext;
94
95 WaitRec(Addr chan, ThreadContext *ctx)
96 : waitChan(chan), waitingContext(ctx)
97 { }
98 };
99
100 // list of all blocked contexts
101 std::list<WaitRec> waitList;
102
103 Addr brk_point; // top of the data segment
104
105 Addr stack_base; // stack segment base (highest address)
106 unsigned stack_size; // initial stack size
107 Addr stack_min; // lowest address accessed on the stack
108
109 // addr to use for next stack region (for multithreaded apps)
110 Addr next_thread_stack_base;
111
112 // Base of region for mmaps (when user doesn't specify an address).
113 Addr mmap_start;
114 Addr mmap_end;
115
116 // Base of region for nxm data
117 Addr nxm_start;
118 Addr nxm_end;
119
120 std::string prog_fname; // file name
121
122 Stats::Scalar<> num_syscalls; // number of syscalls executed
123
124
125 protected:
126 // constructor
127 Process(const std::string &nm,
128 System *_system,
129 int stdin_fd, // initial I/O descriptors
130 int stdout_fd,
131 int stderr_fd);
132
133 // post initialization startup
134 virtual void startup();
135
136 protected:
137 /// Memory object for initialization (image loading)
138 TranslatingPort *initVirtMem;
139
140 public:
141 PageTable *pTable;
142
143 private:
144 // file descriptor remapping support
145 static const int MAX_FD = 256; // max legal fd value
146 int fd_map[MAX_FD+1];
147
148 public:
149 // static helper functions to generate file descriptors for constructor
150 static int openInputFile(const std::string &filename);
151 static int openOutputFile(const std::string &filename);
152
153 // override of virtual SimObject method: register statistics
154 virtual void regStats();
155
156 // register a thread context for this process.
157 // returns tc's cpu number (index into threadContexts[])
158 int registerThreadContext(ThreadContext *tc);
159
160
161 void replaceThreadContext(ThreadContext *tc, int tcIndex);
162
163 // map simulator fd sim_fd to target fd tgt_fd
164 void dup_fd(int sim_fd, int tgt_fd);
165
166 // generate new target fd for sim_fd
167 int alloc_fd(int sim_fd);
168
169 // free target fd (e.g., after close)
170 void free_fd(int tgt_fd);
171
172 // look up simulator fd for given target fd
173 int sim_fd(int tgt_fd);
174
175 virtual void syscall(int64_t callnum, ThreadContext *tc) = 0;
176
177 void serialize(std::ostream &os);
178 void unserialize(Checkpoint *cp, const std::string §ion);
179};
180
181//
182// "Live" process with system calls redirected to host system
183//
184class ObjectFile;
185class LiveProcess : public Process
186{
187 protected:
188 ObjectFile *objFile;
189 std::vector<std::string> argv;
190 std::vector<std::string> envp;
191 std::string cwd;
192
193 LiveProcess(const std::string &nm, ObjectFile *objFile,
194 System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
195 std::vector<std::string> &argv,
196 std::vector<std::string> &envp,
197 const std::string &cwd,
198 uint64_t _uid, uint64_t _euid,
199 uint64_t _gid, uint64_t _egid,
200 uint64_t _pid, uint64_t _ppid);
201
202 virtual void argsInit(int intSize, int pageSize);
203
204 // Id of the owner of the process
205 uint64_t __uid;
206 uint64_t __euid;
207 uint64_t __gid;
208 uint64_t __egid;
209
210 // pid of the process and it's parent
211 uint64_t __pid;
212 uint64_t __ppid;
213
214 public:
215
216 inline uint64_t uid() {return __uid;}
217 inline uint64_t euid() {return __euid;}
218 inline uint64_t gid() {return __gid;}
219 inline uint64_t egid() {return __egid;}
220 inline uint64_t pid() {return __pid;}
221 inline uint64_t ppid() {return __ppid;}
222
223 std::string
224 fullPath(const std::string &filename)
225 {
226 if (filename[0] == '/' || cwd.empty())
227 return filename;
228
229 std::string full = cwd;
230
231 if (cwd[cwd.size() - 1] != '/')
232 full += '/';
233
234 return full + filename;
235 }
236
237 virtual void syscall(int64_t callnum, ThreadContext *tc);
238
239 virtual SyscallDesc* getDesc(int callnum) = 0;
240
241 // this function is used to create the LiveProcess object, since
242 // we can't tell which subclass of LiveProcess to use until we
243 // open and look at the object file.
244 static LiveProcess *create(const std::string &nm,
245 System *_system,
246 int stdin_fd, int stdout_fd, int stderr_fd,
247 std::string executable,
248 std::vector<std::string> &argv,
249 std::vector<std::string> &envp,
250 const std::string &cwd,
251 uint64_t _uid, uint64_t _euid,
252 uint64_t _gid, uint64_t _egid,
253 uint64_t _pid, uint64_t _ppid);
254};
255
256
257#endif // !FULL_SYSTEM
258
259#endif // __PROCESS_HH__
| 85class Process : public SimObject
86{
87 public:
88
89 /// Pointer to object representing the system this process is
90 /// running on.
91 System *system;
92
93 // have we initialized a thread context from this process? If
94 // yes, subsequent contexts are assumed to be for dynamically
95 // created threads and are not initialized.
96 bool initialContextLoaded;
97
98 // thread contexts associated with this process
99 std::vector<ThreadContext *> threadContexts;
100
101 // remote gdb objects
102 std::vector<TheISA::RemoteGDB *> remoteGDB;
103 std::vector<GDBListener *> gdbListen;
104 bool breakpoint();
105
106 // number of CPUs (esxec contexts, really) assigned to this process.
107 unsigned int numCpus() { return threadContexts.size(); }
108
109 // record of blocked context
110 struct WaitRec
111 {
112 Addr waitChan;
113 ThreadContext *waitingContext;
114
115 WaitRec(Addr chan, ThreadContext *ctx)
116 : waitChan(chan), waitingContext(ctx)
117 { }
118 };
119
120 // list of all blocked contexts
121 std::list<WaitRec> waitList;
122
123 Addr brk_point; // top of the data segment
124
125 Addr stack_base; // stack segment base (highest address)
126 unsigned stack_size; // initial stack size
127 Addr stack_min; // lowest address accessed on the stack
128
129 // addr to use for next stack region (for multithreaded apps)
130 Addr next_thread_stack_base;
131
132 // Base of region for mmaps (when user doesn't specify an address).
133 Addr mmap_start;
134 Addr mmap_end;
135
136 // Base of region for nxm data
137 Addr nxm_start;
138 Addr nxm_end;
139
140 std::string prog_fname; // file name
141
142 Stats::Scalar<> num_syscalls; // number of syscalls executed
143
144
145 protected:
146 // constructor
147 Process(const std::string &nm,
148 System *_system,
149 int stdin_fd, // initial I/O descriptors
150 int stdout_fd,
151 int stderr_fd);
152
153 // post initialization startup
154 virtual void startup();
155
156 protected:
157 /// Memory object for initialization (image loading)
158 TranslatingPort *initVirtMem;
159
160 public:
161 PageTable *pTable;
162
163 private:
164 // file descriptor remapping support
165 static const int MAX_FD = 256; // max legal fd value
166 int fd_map[MAX_FD+1];
167
168 public:
169 // static helper functions to generate file descriptors for constructor
170 static int openInputFile(const std::string &filename);
171 static int openOutputFile(const std::string &filename);
172
173 // override of virtual SimObject method: register statistics
174 virtual void regStats();
175
176 // register a thread context for this process.
177 // returns tc's cpu number (index into threadContexts[])
178 int registerThreadContext(ThreadContext *tc);
179
180
181 void replaceThreadContext(ThreadContext *tc, int tcIndex);
182
183 // map simulator fd sim_fd to target fd tgt_fd
184 void dup_fd(int sim_fd, int tgt_fd);
185
186 // generate new target fd for sim_fd
187 int alloc_fd(int sim_fd);
188
189 // free target fd (e.g., after close)
190 void free_fd(int tgt_fd);
191
192 // look up simulator fd for given target fd
193 int sim_fd(int tgt_fd);
194
195 virtual void syscall(int64_t callnum, ThreadContext *tc) = 0;
196
197 void serialize(std::ostream &os);
198 void unserialize(Checkpoint *cp, const std::string §ion);
199};
200
201//
202// "Live" process with system calls redirected to host system
203//
204class ObjectFile;
205class LiveProcess : public Process
206{
207 protected:
208 ObjectFile *objFile;
209 std::vector<std::string> argv;
210 std::vector<std::string> envp;
211 std::string cwd;
212
213 LiveProcess(const std::string &nm, ObjectFile *objFile,
214 System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
215 std::vector<std::string> &argv,
216 std::vector<std::string> &envp,
217 const std::string &cwd,
218 uint64_t _uid, uint64_t _euid,
219 uint64_t _gid, uint64_t _egid,
220 uint64_t _pid, uint64_t _ppid);
221
222 virtual void argsInit(int intSize, int pageSize);
223
224 // Id of the owner of the process
225 uint64_t __uid;
226 uint64_t __euid;
227 uint64_t __gid;
228 uint64_t __egid;
229
230 // pid of the process and it's parent
231 uint64_t __pid;
232 uint64_t __ppid;
233
234 public:
235
236 inline uint64_t uid() {return __uid;}
237 inline uint64_t euid() {return __euid;}
238 inline uint64_t gid() {return __gid;}
239 inline uint64_t egid() {return __egid;}
240 inline uint64_t pid() {return __pid;}
241 inline uint64_t ppid() {return __ppid;}
242
243 std::string
244 fullPath(const std::string &filename)
245 {
246 if (filename[0] == '/' || cwd.empty())
247 return filename;
248
249 std::string full = cwd;
250
251 if (cwd[cwd.size() - 1] != '/')
252 full += '/';
253
254 return full + filename;
255 }
256
257 virtual void syscall(int64_t callnum, ThreadContext *tc);
258
259 virtual SyscallDesc* getDesc(int callnum) = 0;
260
261 // this function is used to create the LiveProcess object, since
262 // we can't tell which subclass of LiveProcess to use until we
263 // open and look at the object file.
264 static LiveProcess *create(const std::string &nm,
265 System *_system,
266 int stdin_fd, int stdout_fd, int stderr_fd,
267 std::string executable,
268 std::vector<std::string> &argv,
269 std::vector<std::string> &envp,
270 const std::string &cwd,
271 uint64_t _uid, uint64_t _euid,
272 uint64_t _gid, uint64_t _egid,
273 uint64_t _pid, uint64_t _ppid);
274};
275
276
277#endif // !FULL_SYSTEM
278
279#endif // __PROCESS_HH__
|