process.cc (4111:65fffcb4fae9) process.cc (4117:2807cee7b892)
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 * Ali Saidi
31 */
32
33#include <unistd.h>
34#include <fcntl.h>
35
36#include <string>
37
38#include "arch/remote_gdb.hh"
39#include "base/intmath.hh"
40#include "base/loader/object_file.hh"
41#include "base/loader/symtab.hh"
42#include "base/statistics.hh"
43#include "config/full_system.hh"
44#include "cpu/thread_context.hh"
45#include "mem/page_table.hh"
46#include "mem/physical.hh"
47#include "mem/translating_port.hh"
48#include "sim/builder.hh"
49#include "sim/process.hh"
50#include "sim/stats.hh"
51#include "sim/syscall_emul.hh"
52#include "sim/system.hh"
53
54#include "arch/isa_specific.hh"
55#if THE_ISA == ALPHA_ISA
56#include "arch/alpha/linux/process.hh"
57#include "arch/alpha/tru64/process.hh"
58#elif THE_ISA == SPARC_ISA
59#include "arch/sparc/linux/process.hh"
60#include "arch/sparc/solaris/process.hh"
61#elif THE_ISA == MIPS_ISA
62#include "arch/mips/linux/process.hh"
63#else
64#error "THE_ISA not set"
65#endif
66
67
68using namespace std;
69using namespace TheISA;
70
71//
72// The purpose of this code is to fake the loader & syscall mechanism
73// when there's no OS: thus there's no resone to use it in FULL_SYSTEM
74// mode when we do have an OS
75//
76#if FULL_SYSTEM
77#error "process.cc not compatible with FULL_SYSTEM"
78#endif
79
80// current number of allocated processes
81int num_processes = 0;
82
83Process::Process(const string &nm,
84 System *_system,
85 int stdin_fd, // initial I/O descriptors
86 int stdout_fd,
87 int stderr_fd)
88 : SimObject(nm), system(_system)
89{
90 // initialize first 3 fds (stdin, stdout, stderr)
91 fd_map[STDIN_FILENO] = stdin_fd;
92 fd_map[STDOUT_FILENO] = stdout_fd;
93 fd_map[STDERR_FILENO] = stderr_fd;
94
95 // mark remaining fds as free
96 for (int i = 3; i <= MAX_FD; ++i) {
97 fd_map[i] = -1;
98 }
99
100 mmap_start = mmap_end = 0;
101 nxm_start = nxm_end = 0;
102 pTable = new PageTable(system);
103 // other parameters will be initialized when the program is loaded
104}
105
106
107void
108Process::regStats()
109{
110 using namespace Stats;
111
112 num_syscalls
113 .name(name() + ".PROG:num_syscalls")
114 .desc("Number of system calls")
115 ;
116}
117
118//
119// static helper functions
120//
121int
122Process::openInputFile(const string &filename)
123{
124 int fd = open(filename.c_str(), O_RDONLY);
125
126 if (fd == -1) {
127 perror(NULL);
128 cerr << "unable to open \"" << filename << "\" for reading\n";
129 fatal("can't open input file");
130 }
131
132 return fd;
133}
134
135
136int
137Process::openOutputFile(const string &filename)
138{
139 int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774);
140
141 if (fd == -1) {
142 perror(NULL);
143 cerr << "unable to open \"" << filename << "\" for writing\n";
144 fatal("can't open output file");
145 }
146
147 return fd;
148}
149
150
151int
152Process::registerThreadContext(ThreadContext *tc)
153{
154 // add to list
155 int myIndex = threadContexts.size();
156 threadContexts.push_back(tc);
157
158 RemoteGDB *rgdb = new RemoteGDB(system, tc);
159 GDBListener *gdbl = new GDBListener(rgdb, 7000 + myIndex);
160 gdbl->listen();
161 //gdbl->accept();
162
163 remoteGDB.push_back(rgdb);
164
165 // return CPU number to caller
166 return myIndex;
167}
168
169void
170Process::startup()
171{
172 if (threadContexts.empty())
173 fatal("Process %s is not associated with any CPUs!\n", name());
174
175 // first thread context for this process... initialize & enable
176 ThreadContext *tc = threadContexts[0];
177
178 // mark this context as active so it will start ticking.
179 tc->activate(0);
180
181 Port *mem_port;
182 mem_port = system->physmem->getPort("functional");
183 initVirtMem = new TranslatingPort("process init port", pTable, true);
184 mem_port->setPeer(initVirtMem);
185 initVirtMem->setPeer(mem_port);
186}
187
188void
189Process::replaceThreadContext(ThreadContext *tc, int tcIndex)
190{
191 if (tcIndex >= threadContexts.size()) {
192 panic("replaceThreadContext: bad tcIndex, %d >= %d\n",
193 tcIndex, threadContexts.size());
194 }
195
196 threadContexts[tcIndex] = tc;
197}
198
199// map simulator fd sim_fd to target fd tgt_fd
200void
201Process::dup_fd(int sim_fd, int tgt_fd)
202{
203 if (tgt_fd < 0 || tgt_fd > MAX_FD)
204 panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
205
206 fd_map[tgt_fd] = sim_fd;
207}
208
209
210// generate new target fd for sim_fd
211int
212Process::alloc_fd(int sim_fd)
213{
214 // in case open() returns an error, don't allocate a new fd
215 if (sim_fd == -1)
216 return -1;
217
218 // find first free target fd
219 for (int free_fd = 0; free_fd < MAX_FD; ++free_fd) {
220 if (fd_map[free_fd] == -1) {
221 fd_map[free_fd] = sim_fd;
222 return free_fd;
223 }
224 }
225
226 panic("Process::alloc_fd: out of file descriptors!");
227}
228
229
230// free target fd (e.g., after close)
231void
232Process::free_fd(int tgt_fd)
233{
234 if (fd_map[tgt_fd] == -1)
235 warn("Process::free_fd: request to free unused fd %d", tgt_fd);
236
237 fd_map[tgt_fd] = -1;
238}
239
240
241// look up simulator fd for given target fd
242int
243Process::sim_fd(int tgt_fd)
244{
245 if (tgt_fd > MAX_FD)
246 return -1;
247
248 return fd_map[tgt_fd];
249}
250
251void
252Process::serialize(std::ostream &os)
253{
254 SERIALIZE_SCALAR(initialContextLoaded);
255 SERIALIZE_SCALAR(brk_point);
256 SERIALIZE_SCALAR(stack_base);
257 SERIALIZE_SCALAR(stack_size);
258 SERIALIZE_SCALAR(stack_min);
259 SERIALIZE_SCALAR(next_thread_stack_base);
260 SERIALIZE_SCALAR(mmap_start);
261 SERIALIZE_SCALAR(mmap_end);
262 SERIALIZE_SCALAR(nxm_start);
263 SERIALIZE_SCALAR(nxm_end);
264 SERIALIZE_ARRAY(fd_map, MAX_FD);
265
266 pTable->serialize(os);
267}
268
269void
270Process::unserialize(Checkpoint *cp, const std::string &section)
271{
272 UNSERIALIZE_SCALAR(initialContextLoaded);
273 UNSERIALIZE_SCALAR(brk_point);
274 UNSERIALIZE_SCALAR(stack_base);
275 UNSERIALIZE_SCALAR(stack_size);
276 UNSERIALIZE_SCALAR(stack_min);
277 UNSERIALIZE_SCALAR(next_thread_stack_base);
278 UNSERIALIZE_SCALAR(mmap_start);
279 UNSERIALIZE_SCALAR(mmap_end);
280 UNSERIALIZE_SCALAR(nxm_start);
281 UNSERIALIZE_SCALAR(nxm_end);
282 UNSERIALIZE_ARRAY(fd_map, MAX_FD);
283
284 pTable->unserialize(cp, section);
285}
286
287
288//
289// need to declare these here since there is no concrete Process type
290// that can be constructed (i.e., no REGISTER_SIM_OBJECT() macro call,
291// which is where these get declared for concrete types).
292//
293DEFINE_SIM_OBJECT_CLASS_NAME("Process", Process)
294
295
296////////////////////////////////////////////////////////////////////////
297//
298// LiveProcess member definitions
299//
300////////////////////////////////////////////////////////////////////////
301
302
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 * Ali Saidi
31 */
32
33#include <unistd.h>
34#include <fcntl.h>
35
36#include <string>
37
38#include "arch/remote_gdb.hh"
39#include "base/intmath.hh"
40#include "base/loader/object_file.hh"
41#include "base/loader/symtab.hh"
42#include "base/statistics.hh"
43#include "config/full_system.hh"
44#include "cpu/thread_context.hh"
45#include "mem/page_table.hh"
46#include "mem/physical.hh"
47#include "mem/translating_port.hh"
48#include "sim/builder.hh"
49#include "sim/process.hh"
50#include "sim/stats.hh"
51#include "sim/syscall_emul.hh"
52#include "sim/system.hh"
53
54#include "arch/isa_specific.hh"
55#if THE_ISA == ALPHA_ISA
56#include "arch/alpha/linux/process.hh"
57#include "arch/alpha/tru64/process.hh"
58#elif THE_ISA == SPARC_ISA
59#include "arch/sparc/linux/process.hh"
60#include "arch/sparc/solaris/process.hh"
61#elif THE_ISA == MIPS_ISA
62#include "arch/mips/linux/process.hh"
63#else
64#error "THE_ISA not set"
65#endif
66
67
68using namespace std;
69using namespace TheISA;
70
71//
72// The purpose of this code is to fake the loader & syscall mechanism
73// when there's no OS: thus there's no resone to use it in FULL_SYSTEM
74// mode when we do have an OS
75//
76#if FULL_SYSTEM
77#error "process.cc not compatible with FULL_SYSTEM"
78#endif
79
80// current number of allocated processes
81int num_processes = 0;
82
83Process::Process(const string &nm,
84 System *_system,
85 int stdin_fd, // initial I/O descriptors
86 int stdout_fd,
87 int stderr_fd)
88 : SimObject(nm), system(_system)
89{
90 // initialize first 3 fds (stdin, stdout, stderr)
91 fd_map[STDIN_FILENO] = stdin_fd;
92 fd_map[STDOUT_FILENO] = stdout_fd;
93 fd_map[STDERR_FILENO] = stderr_fd;
94
95 // mark remaining fds as free
96 for (int i = 3; i <= MAX_FD; ++i) {
97 fd_map[i] = -1;
98 }
99
100 mmap_start = mmap_end = 0;
101 nxm_start = nxm_end = 0;
102 pTable = new PageTable(system);
103 // other parameters will be initialized when the program is loaded
104}
105
106
107void
108Process::regStats()
109{
110 using namespace Stats;
111
112 num_syscalls
113 .name(name() + ".PROG:num_syscalls")
114 .desc("Number of system calls")
115 ;
116}
117
118//
119// static helper functions
120//
121int
122Process::openInputFile(const string &filename)
123{
124 int fd = open(filename.c_str(), O_RDONLY);
125
126 if (fd == -1) {
127 perror(NULL);
128 cerr << "unable to open \"" << filename << "\" for reading\n";
129 fatal("can't open input file");
130 }
131
132 return fd;
133}
134
135
136int
137Process::openOutputFile(const string &filename)
138{
139 int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774);
140
141 if (fd == -1) {
142 perror(NULL);
143 cerr << "unable to open \"" << filename << "\" for writing\n";
144 fatal("can't open output file");
145 }
146
147 return fd;
148}
149
150
151int
152Process::registerThreadContext(ThreadContext *tc)
153{
154 // add to list
155 int myIndex = threadContexts.size();
156 threadContexts.push_back(tc);
157
158 RemoteGDB *rgdb = new RemoteGDB(system, tc);
159 GDBListener *gdbl = new GDBListener(rgdb, 7000 + myIndex);
160 gdbl->listen();
161 //gdbl->accept();
162
163 remoteGDB.push_back(rgdb);
164
165 // return CPU number to caller
166 return myIndex;
167}
168
169void
170Process::startup()
171{
172 if (threadContexts.empty())
173 fatal("Process %s is not associated with any CPUs!\n", name());
174
175 // first thread context for this process... initialize & enable
176 ThreadContext *tc = threadContexts[0];
177
178 // mark this context as active so it will start ticking.
179 tc->activate(0);
180
181 Port *mem_port;
182 mem_port = system->physmem->getPort("functional");
183 initVirtMem = new TranslatingPort("process init port", pTable, true);
184 mem_port->setPeer(initVirtMem);
185 initVirtMem->setPeer(mem_port);
186}
187
188void
189Process::replaceThreadContext(ThreadContext *tc, int tcIndex)
190{
191 if (tcIndex >= threadContexts.size()) {
192 panic("replaceThreadContext: bad tcIndex, %d >= %d\n",
193 tcIndex, threadContexts.size());
194 }
195
196 threadContexts[tcIndex] = tc;
197}
198
199// map simulator fd sim_fd to target fd tgt_fd
200void
201Process::dup_fd(int sim_fd, int tgt_fd)
202{
203 if (tgt_fd < 0 || tgt_fd > MAX_FD)
204 panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
205
206 fd_map[tgt_fd] = sim_fd;
207}
208
209
210// generate new target fd for sim_fd
211int
212Process::alloc_fd(int sim_fd)
213{
214 // in case open() returns an error, don't allocate a new fd
215 if (sim_fd == -1)
216 return -1;
217
218 // find first free target fd
219 for (int free_fd = 0; free_fd < MAX_FD; ++free_fd) {
220 if (fd_map[free_fd] == -1) {
221 fd_map[free_fd] = sim_fd;
222 return free_fd;
223 }
224 }
225
226 panic("Process::alloc_fd: out of file descriptors!");
227}
228
229
230// free target fd (e.g., after close)
231void
232Process::free_fd(int tgt_fd)
233{
234 if (fd_map[tgt_fd] == -1)
235 warn("Process::free_fd: request to free unused fd %d", tgt_fd);
236
237 fd_map[tgt_fd] = -1;
238}
239
240
241// look up simulator fd for given target fd
242int
243Process::sim_fd(int tgt_fd)
244{
245 if (tgt_fd > MAX_FD)
246 return -1;
247
248 return fd_map[tgt_fd];
249}
250
251void
252Process::serialize(std::ostream &os)
253{
254 SERIALIZE_SCALAR(initialContextLoaded);
255 SERIALIZE_SCALAR(brk_point);
256 SERIALIZE_SCALAR(stack_base);
257 SERIALIZE_SCALAR(stack_size);
258 SERIALIZE_SCALAR(stack_min);
259 SERIALIZE_SCALAR(next_thread_stack_base);
260 SERIALIZE_SCALAR(mmap_start);
261 SERIALIZE_SCALAR(mmap_end);
262 SERIALIZE_SCALAR(nxm_start);
263 SERIALIZE_SCALAR(nxm_end);
264 SERIALIZE_ARRAY(fd_map, MAX_FD);
265
266 pTable->serialize(os);
267}
268
269void
270Process::unserialize(Checkpoint *cp, const std::string &section)
271{
272 UNSERIALIZE_SCALAR(initialContextLoaded);
273 UNSERIALIZE_SCALAR(brk_point);
274 UNSERIALIZE_SCALAR(stack_base);
275 UNSERIALIZE_SCALAR(stack_size);
276 UNSERIALIZE_SCALAR(stack_min);
277 UNSERIALIZE_SCALAR(next_thread_stack_base);
278 UNSERIALIZE_SCALAR(mmap_start);
279 UNSERIALIZE_SCALAR(mmap_end);
280 UNSERIALIZE_SCALAR(nxm_start);
281 UNSERIALIZE_SCALAR(nxm_end);
282 UNSERIALIZE_ARRAY(fd_map, MAX_FD);
283
284 pTable->unserialize(cp, section);
285}
286
287
288//
289// need to declare these here since there is no concrete Process type
290// that can be constructed (i.e., no REGISTER_SIM_OBJECT() macro call,
291// which is where these get declared for concrete types).
292//
293DEFINE_SIM_OBJECT_CLASS_NAME("Process", Process)
294
295
296////////////////////////////////////////////////////////////////////////
297//
298// LiveProcess member definitions
299//
300////////////////////////////////////////////////////////////////////////
301
302
303void
304copyStringArray(vector<string> &strings, Addr array_ptr, Addr data_ptr,
305 TranslatingPort* memPort, int ptr_size)
306{
307 Addr data_ptr_swap;
308 for (int i = 0; i < strings.size(); ++i) {
309 data_ptr_swap = htog(data_ptr);
310 memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr_swap, ptr_size);
311 memPort->writeString(data_ptr, strings[i].c_str());
312 array_ptr += ptr_size;
313 data_ptr += strings[i].size() + 1;
314 }
315 // add NULL terminator
316 data_ptr = 0;
317
318 memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr, ptr_size);
319}
320
321LiveProcess::LiveProcess(const string &nm, ObjectFile *_objFile,
322 System *_system,
323 int stdin_fd, int stdout_fd, int stderr_fd,
324 vector<string> &_argv, vector<string> &_envp,
325 const string &_cwd,
326 uint64_t _uid, uint64_t _euid,
327 uint64_t _gid, uint64_t _egid,
328 uint64_t _pid, uint64_t _ppid)
329 : Process(nm, _system, stdin_fd, stdout_fd, stderr_fd),
330 objFile(_objFile), argv(_argv), envp(_envp), cwd(_cwd)
331{
332 __uid = _uid;
333 __euid = _euid;
334 __gid = _gid;
335 __egid = _egid;
336 __pid = _pid;
337 __ppid = _ppid;
338
339 prog_fname = argv[0];
340
341 // load up symbols, if any... these may be used for debugging or
342 // profiling.
343 if (!debugSymbolTable) {
344 debugSymbolTable = new SymbolTable();
345 if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
346 !objFile->loadLocalSymbols(debugSymbolTable)) {
347 // didn't load any symbols
348 delete debugSymbolTable;
349 debugSymbolTable = NULL;
350 }
351 }
352}
353
354void
355LiveProcess::argsInit(int intSize, int pageSize)
356{
357 Process::startup();
358
359 // load object file into target memory
360 objFile->loadSections(initVirtMem);
361
362 // Calculate how much space we need for arg & env arrays.
363 int argv_array_size = intSize * (argv.size() + 1);
364 int envp_array_size = intSize * (envp.size() + 1);
365 int arg_data_size = 0;
366 for (int i = 0; i < argv.size(); ++i) {
367 arg_data_size += argv[i].size() + 1;
368 }
369 int env_data_size = 0;
370 for (int i = 0; i < envp.size(); ++i) {
371 env_data_size += envp[i].size() + 1;
372 }
373
374 int space_needed =
375 argv_array_size + envp_array_size + arg_data_size + env_data_size;
376 if (space_needed < 32*1024)
377 space_needed = 32*1024;
378
379 // set bottom of stack
380 stack_min = stack_base - space_needed;
381 // align it
382 stack_min = roundDown(stack_min, pageSize);
383 stack_size = stack_base - stack_min;
384 // map memory
385 pTable->allocate(stack_min, roundUp(stack_size, pageSize));
386
387 // map out initial stack contents
388 Addr argv_array_base = stack_min + intSize; // room for argc
389 Addr envp_array_base = argv_array_base + argv_array_size;
390 Addr arg_data_base = envp_array_base + envp_array_size;
391 Addr env_data_base = arg_data_base + arg_data_size;
392
393 // write contents to stack
394 uint64_t argc = argv.size();
395 if (intSize == 8)
396 argc = htog((uint64_t)argc);
397 else if (intSize == 4)
398 argc = htog((uint32_t)argc);
399 else
400 panic("Unknown int size");
401
402 initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize);
403
404 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
405 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
406
407 threadContexts[0]->setIntReg(ArgumentReg0, argc);
408 threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
409 threadContexts[0]->setIntReg(StackPointerReg, stack_min);
410
411 Addr prog_entry = objFile->entryPoint();
412 threadContexts[0]->setPC(prog_entry);
413 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
414
415#if THE_ISA != ALPHA_ISA //e.g. MIPS or Sparc
416 threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
417#endif
418
419 num_processes++;
420}
421
422void
423LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
424{
425 num_syscalls++;
426
427 SyscallDesc *desc = getDesc(callnum);
428 if (desc == NULL)
429 fatal("Syscall %d out of range", callnum);
430
431 desc->doSyscall(callnum, this, tc);
432}
433
434LiveProcess *
435LiveProcess::create(const std::string &nm, System *system, int stdin_fd,
436 int stdout_fd, int stderr_fd, std::string executable,
437 std::vector<std::string> &argv,
438 std::vector<std::string> &envp,
439 const std::string &cwd,
440 uint64_t _uid, uint64_t _euid,
441 uint64_t _gid, uint64_t _egid,
442 uint64_t _pid, uint64_t _ppid)
443{
444 LiveProcess *process = NULL;
445
446 ObjectFile *objFile = createObjectFile(executable);
447 if (objFile == NULL) {
448 fatal("Can't load object file %s", executable);
449 }
450
451 if (objFile->isDynamic())
452 fatal("Object file is a dynamic executable however only static "
453 "executables are supported!\n Please recompile your "
454 "executable as a static binary and try again.\n");
455
456#if THE_ISA == ALPHA_ISA
457 if (objFile->getArch() != ObjectFile::Alpha)
458 fatal("Object file architecture does not match compiled ISA (Alpha).");
459 switch (objFile->getOpSys()) {
460 case ObjectFile::Tru64:
461 process = new AlphaTru64Process(nm, objFile, system,
462 stdin_fd, stdout_fd, stderr_fd,
463 argv, envp, cwd,
464 _uid, _euid, _gid, _egid, _pid, _ppid);
465 break;
466
467 case ObjectFile::Linux:
468 process = new AlphaLinuxProcess(nm, objFile, system,
469 stdin_fd, stdout_fd, stderr_fd,
470 argv, envp, cwd,
471 _uid, _euid, _gid, _egid, _pid, _ppid);
472 break;
473
474 default:
475 fatal("Unknown/unsupported operating system.");
476 }
477#elif THE_ISA == SPARC_ISA
478 if (objFile->getArch() != ObjectFile::SPARC64 && objFile->getArch() != ObjectFile::SPARC32)
479 fatal("Object file architecture does not match compiled ISA (SPARC).");
480 switch (objFile->getOpSys()) {
481 case ObjectFile::Linux:
482 if (objFile->getArch() == ObjectFile::SPARC64) {
483 process = new Sparc64LinuxProcess(nm, objFile, system,
484 stdin_fd, stdout_fd, stderr_fd,
485 argv, envp, cwd,
486 _uid, _euid, _gid,
487 _egid, _pid, _ppid);
488 } else {
489 process = new Sparc32LinuxProcess(nm, objFile, system,
490 stdin_fd, stdout_fd, stderr_fd,
491 argv, envp, cwd,
492 _uid, _euid, _gid,
493 _egid, _pid, _ppid);
494 }
495 break;
496
497
498 case ObjectFile::Solaris:
499 process = new SparcSolarisProcess(nm, objFile, system,
500 stdin_fd, stdout_fd, stderr_fd,
501 argv, envp, cwd,
502 _uid, _euid, _gid, _egid, _pid, _ppid);
503 break;
504 default:
505 fatal("Unknown/unsupported operating system.");
506 }
507#elif THE_ISA == MIPS_ISA
508 if (objFile->getArch() != ObjectFile::Mips)
509 fatal("Object file architecture does not match compiled ISA (MIPS).");
510 switch (objFile->getOpSys()) {
511 case ObjectFile::Linux:
512 process = new MipsLinuxProcess(nm, objFile, system,
513 stdin_fd, stdout_fd, stderr_fd,
514 argv, envp, cwd,
515 _uid, _euid, _gid, _egid, _pid, _ppid);
516 break;
517
518 default:
519 fatal("Unknown/unsupported operating system.");
520 }
521#else
522#error "THE_ISA not set"
523#endif
524
525
526 if (process == NULL)
527 fatal("Unknown error creating process object.");
528 return process;
529}
530
531
532BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
533
534 VectorParam<string> cmd;
535 Param<string> executable;
536 Param<string> input;
537 Param<string> output;
538 VectorParam<string> env;
539 Param<string> cwd;
540 SimObjectParam<System *> system;
541 Param<uint64_t> uid;
542 Param<uint64_t> euid;
543 Param<uint64_t> gid;
544 Param<uint64_t> egid;
545 Param<uint64_t> pid;
546 Param<uint64_t> ppid;
547
548END_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
549
550
551BEGIN_INIT_SIM_OBJECT_PARAMS(LiveProcess)
552
553 INIT_PARAM(cmd, "command line (executable plus arguments)"),
554 INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
555 INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
556 INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
557 INIT_PARAM(env, "environment settings"),
558 INIT_PARAM(cwd, "current working directory"),
559 INIT_PARAM(system, "system"),
560 INIT_PARAM(uid, "user id"),
561 INIT_PARAM(euid, "effective user id"),
562 INIT_PARAM(gid, "group id"),
563 INIT_PARAM(egid, "effective group id"),
564 INIT_PARAM(pid, "process id"),
565 INIT_PARAM(ppid, "parent process id")
566
567END_INIT_SIM_OBJECT_PARAMS(LiveProcess)
568
569
570CREATE_SIM_OBJECT(LiveProcess)
571{
572 string in = input;
573 string out = output;
574
575 // initialize file descriptors to default: same as simulator
576 int stdin_fd, stdout_fd, stderr_fd;
577
578 if (in == "stdin" || in == "cin")
579 stdin_fd = STDIN_FILENO;
580 else
581 stdin_fd = Process::openInputFile(input);
582
583 if (out == "stdout" || out == "cout")
584 stdout_fd = STDOUT_FILENO;
585 else if (out == "stderr" || out == "cerr")
586 stdout_fd = STDERR_FILENO;
587 else
588 stdout_fd = Process::openOutputFile(out);
589
590 stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
591
592 return LiveProcess::create(getInstanceName(), system,
593 stdin_fd, stdout_fd, stderr_fd,
594 (string)executable == "" ? cmd[0] : executable,
595 cmd, env, cwd,
596 uid, euid, gid, egid, pid, ppid);
597}
598
599
600REGISTER_SIM_OBJECT("LiveProcess", LiveProcess)
303LiveProcess::LiveProcess(const string &nm, ObjectFile *_objFile,
304 System *_system,
305 int stdin_fd, int stdout_fd, int stderr_fd,
306 vector<string> &_argv, vector<string> &_envp,
307 const string &_cwd,
308 uint64_t _uid, uint64_t _euid,
309 uint64_t _gid, uint64_t _egid,
310 uint64_t _pid, uint64_t _ppid)
311 : Process(nm, _system, stdin_fd, stdout_fd, stderr_fd),
312 objFile(_objFile), argv(_argv), envp(_envp), cwd(_cwd)
313{
314 __uid = _uid;
315 __euid = _euid;
316 __gid = _gid;
317 __egid = _egid;
318 __pid = _pid;
319 __ppid = _ppid;
320
321 prog_fname = argv[0];
322
323 // load up symbols, if any... these may be used for debugging or
324 // profiling.
325 if (!debugSymbolTable) {
326 debugSymbolTable = new SymbolTable();
327 if (!objFile->loadGlobalSymbols(debugSymbolTable) ||
328 !objFile->loadLocalSymbols(debugSymbolTable)) {
329 // didn't load any symbols
330 delete debugSymbolTable;
331 debugSymbolTable = NULL;
332 }
333 }
334}
335
336void
337LiveProcess::argsInit(int intSize, int pageSize)
338{
339 Process::startup();
340
341 // load object file into target memory
342 objFile->loadSections(initVirtMem);
343
344 // Calculate how much space we need for arg & env arrays.
345 int argv_array_size = intSize * (argv.size() + 1);
346 int envp_array_size = intSize * (envp.size() + 1);
347 int arg_data_size = 0;
348 for (int i = 0; i < argv.size(); ++i) {
349 arg_data_size += argv[i].size() + 1;
350 }
351 int env_data_size = 0;
352 for (int i = 0; i < envp.size(); ++i) {
353 env_data_size += envp[i].size() + 1;
354 }
355
356 int space_needed =
357 argv_array_size + envp_array_size + arg_data_size + env_data_size;
358 if (space_needed < 32*1024)
359 space_needed = 32*1024;
360
361 // set bottom of stack
362 stack_min = stack_base - space_needed;
363 // align it
364 stack_min = roundDown(stack_min, pageSize);
365 stack_size = stack_base - stack_min;
366 // map memory
367 pTable->allocate(stack_min, roundUp(stack_size, pageSize));
368
369 // map out initial stack contents
370 Addr argv_array_base = stack_min + intSize; // room for argc
371 Addr envp_array_base = argv_array_base + argv_array_size;
372 Addr arg_data_base = envp_array_base + envp_array_size;
373 Addr env_data_base = arg_data_base + arg_data_size;
374
375 // write contents to stack
376 uint64_t argc = argv.size();
377 if (intSize == 8)
378 argc = htog((uint64_t)argc);
379 else if (intSize == 4)
380 argc = htog((uint32_t)argc);
381 else
382 panic("Unknown int size");
383
384 initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize);
385
386 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
387 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
388
389 threadContexts[0]->setIntReg(ArgumentReg0, argc);
390 threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
391 threadContexts[0]->setIntReg(StackPointerReg, stack_min);
392
393 Addr prog_entry = objFile->entryPoint();
394 threadContexts[0]->setPC(prog_entry);
395 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
396
397#if THE_ISA != ALPHA_ISA //e.g. MIPS or Sparc
398 threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
399#endif
400
401 num_processes++;
402}
403
404void
405LiveProcess::syscall(int64_t callnum, ThreadContext *tc)
406{
407 num_syscalls++;
408
409 SyscallDesc *desc = getDesc(callnum);
410 if (desc == NULL)
411 fatal("Syscall %d out of range", callnum);
412
413 desc->doSyscall(callnum, this, tc);
414}
415
416LiveProcess *
417LiveProcess::create(const std::string &nm, System *system, int stdin_fd,
418 int stdout_fd, int stderr_fd, std::string executable,
419 std::vector<std::string> &argv,
420 std::vector<std::string> &envp,
421 const std::string &cwd,
422 uint64_t _uid, uint64_t _euid,
423 uint64_t _gid, uint64_t _egid,
424 uint64_t _pid, uint64_t _ppid)
425{
426 LiveProcess *process = NULL;
427
428 ObjectFile *objFile = createObjectFile(executable);
429 if (objFile == NULL) {
430 fatal("Can't load object file %s", executable);
431 }
432
433 if (objFile->isDynamic())
434 fatal("Object file is a dynamic executable however only static "
435 "executables are supported!\n Please recompile your "
436 "executable as a static binary and try again.\n");
437
438#if THE_ISA == ALPHA_ISA
439 if (objFile->getArch() != ObjectFile::Alpha)
440 fatal("Object file architecture does not match compiled ISA (Alpha).");
441 switch (objFile->getOpSys()) {
442 case ObjectFile::Tru64:
443 process = new AlphaTru64Process(nm, objFile, system,
444 stdin_fd, stdout_fd, stderr_fd,
445 argv, envp, cwd,
446 _uid, _euid, _gid, _egid, _pid, _ppid);
447 break;
448
449 case ObjectFile::Linux:
450 process = new AlphaLinuxProcess(nm, objFile, system,
451 stdin_fd, stdout_fd, stderr_fd,
452 argv, envp, cwd,
453 _uid, _euid, _gid, _egid, _pid, _ppid);
454 break;
455
456 default:
457 fatal("Unknown/unsupported operating system.");
458 }
459#elif THE_ISA == SPARC_ISA
460 if (objFile->getArch() != ObjectFile::SPARC64 && objFile->getArch() != ObjectFile::SPARC32)
461 fatal("Object file architecture does not match compiled ISA (SPARC).");
462 switch (objFile->getOpSys()) {
463 case ObjectFile::Linux:
464 if (objFile->getArch() == ObjectFile::SPARC64) {
465 process = new Sparc64LinuxProcess(nm, objFile, system,
466 stdin_fd, stdout_fd, stderr_fd,
467 argv, envp, cwd,
468 _uid, _euid, _gid,
469 _egid, _pid, _ppid);
470 } else {
471 process = new Sparc32LinuxProcess(nm, objFile, system,
472 stdin_fd, stdout_fd, stderr_fd,
473 argv, envp, cwd,
474 _uid, _euid, _gid,
475 _egid, _pid, _ppid);
476 }
477 break;
478
479
480 case ObjectFile::Solaris:
481 process = new SparcSolarisProcess(nm, objFile, system,
482 stdin_fd, stdout_fd, stderr_fd,
483 argv, envp, cwd,
484 _uid, _euid, _gid, _egid, _pid, _ppid);
485 break;
486 default:
487 fatal("Unknown/unsupported operating system.");
488 }
489#elif THE_ISA == MIPS_ISA
490 if (objFile->getArch() != ObjectFile::Mips)
491 fatal("Object file architecture does not match compiled ISA (MIPS).");
492 switch (objFile->getOpSys()) {
493 case ObjectFile::Linux:
494 process = new MipsLinuxProcess(nm, objFile, system,
495 stdin_fd, stdout_fd, stderr_fd,
496 argv, envp, cwd,
497 _uid, _euid, _gid, _egid, _pid, _ppid);
498 break;
499
500 default:
501 fatal("Unknown/unsupported operating system.");
502 }
503#else
504#error "THE_ISA not set"
505#endif
506
507
508 if (process == NULL)
509 fatal("Unknown error creating process object.");
510 return process;
511}
512
513
514BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
515
516 VectorParam<string> cmd;
517 Param<string> executable;
518 Param<string> input;
519 Param<string> output;
520 VectorParam<string> env;
521 Param<string> cwd;
522 SimObjectParam<System *> system;
523 Param<uint64_t> uid;
524 Param<uint64_t> euid;
525 Param<uint64_t> gid;
526 Param<uint64_t> egid;
527 Param<uint64_t> pid;
528 Param<uint64_t> ppid;
529
530END_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
531
532
533BEGIN_INIT_SIM_OBJECT_PARAMS(LiveProcess)
534
535 INIT_PARAM(cmd, "command line (executable plus arguments)"),
536 INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
537 INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
538 INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
539 INIT_PARAM(env, "environment settings"),
540 INIT_PARAM(cwd, "current working directory"),
541 INIT_PARAM(system, "system"),
542 INIT_PARAM(uid, "user id"),
543 INIT_PARAM(euid, "effective user id"),
544 INIT_PARAM(gid, "group id"),
545 INIT_PARAM(egid, "effective group id"),
546 INIT_PARAM(pid, "process id"),
547 INIT_PARAM(ppid, "parent process id")
548
549END_INIT_SIM_OBJECT_PARAMS(LiveProcess)
550
551
552CREATE_SIM_OBJECT(LiveProcess)
553{
554 string in = input;
555 string out = output;
556
557 // initialize file descriptors to default: same as simulator
558 int stdin_fd, stdout_fd, stderr_fd;
559
560 if (in == "stdin" || in == "cin")
561 stdin_fd = STDIN_FILENO;
562 else
563 stdin_fd = Process::openInputFile(input);
564
565 if (out == "stdout" || out == "cout")
566 stdout_fd = STDOUT_FILENO;
567 else if (out == "stderr" || out == "cerr")
568 stdout_fd = STDERR_FILENO;
569 else
570 stdout_fd = Process::openOutputFile(out);
571
572 stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
573
574 return LiveProcess::create(getInstanceName(), system,
575 stdin_fd, stdout_fd, stderr_fd,
576 (string)executable == "" ? cmd[0] : executable,
577 cmd, env, cwd,
578 uid, euid, gid, egid, pid, ppid);
579}
580
581
582REGISTER_SIM_OBJECT("LiveProcess", LiveProcess)