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 "base/intmath.hh" 39#include "base/loader/object_file.hh" 40#include "base/loader/symtab.hh" 41#include "base/statistics.hh" 42#include "config/full_system.hh" 43#include "cpu/thread_context.hh" 44#include "mem/page_table.hh" 45#include "mem/physical.hh" 46#include "mem/translating_port.hh" 47#include "sim/builder.hh" 48#include "sim/process.hh" 49#include "sim/stats.hh" 50#include "sim/syscall_emul.hh" 51#include "sim/system.hh" 52 53#include "arch/isa_specific.hh" 54#if THE_ISA == ALPHA_ISA 55#include "arch/alpha/linux/process.hh" 56#include "arch/alpha/tru64/process.hh" 57#elif THE_ISA == SPARC_ISA 58#include "arch/sparc/linux/process.hh" 59#include "arch/sparc/solaris/process.hh" 60#elif THE_ISA == MIPS_ISA 61#include "arch/mips/linux/process.hh" 62#else 63#error "THE_ISA not set" 64#endif 65 66 67using namespace std; 68using namespace TheISA; 69 70// 71// The purpose of this code is to fake the loader & syscall mechanism 72// when there's no OS: thus there's no resone to use it in FULL_SYSTEM 73// mode when we do have an OS 74// 75#if FULL_SYSTEM 76#error "process.cc not compatible with FULL_SYSTEM" 77#endif 78 79// current number of allocated processes 80int num_processes = 0; 81 82Process::Process(const string &nm, 83 System *_system, 84 int stdin_fd, // initial I/O descriptors 85 int stdout_fd, 86 int stderr_fd) 87 : SimObject(nm), system(_system) 88{ 89 // initialize first 3 fds (stdin, stdout, stderr) 90 fd_map[STDIN_FILENO] = stdin_fd; 91 fd_map[STDOUT_FILENO] = stdout_fd; 92 fd_map[STDERR_FILENO] = stderr_fd; 93 94 // mark remaining fds as free 95 for (int i = 3; i <= MAX_FD; ++i) { 96 fd_map[i] = -1; 97 } 98 99 mmap_start = mmap_end = 0; 100 nxm_start = nxm_end = 0; 101 pTable = new PageTable(system); 102 // other parameters will be initialized when the program is loaded 103} 104 105 106void 107Process::regStats() 108{ 109 using namespace Stats; 110 111 num_syscalls 112 .name(name() + ".PROG:num_syscalls") 113 .desc("Number of system calls") 114 ; 115} 116 117// 118// static helper functions 119// 120int 121Process::openInputFile(const string &filename) 122{ 123 int fd = open(filename.c_str(), O_RDONLY); 124 125 if (fd == -1) { 126 perror(NULL); 127 cerr << "unable to open \"" << filename << "\" for reading\n"; 128 fatal("can't open input file"); 129 } 130 131 return fd; 132} 133 134 135int 136Process::openOutputFile(const string &filename) 137{ 138 int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774); 139 140 if (fd == -1) { 141 perror(NULL); 142 cerr << "unable to open \"" << filename << "\" for writing\n"; 143 fatal("can't open output file"); 144 } 145 146 return fd; 147} 148 149 150int 151Process::registerThreadContext(ThreadContext *tc) 152{ 153 // add to list 154 int myIndex = threadContexts.size(); 155 threadContexts.push_back(tc); 156 157 // return CPU number to caller 158 return myIndex; 159} 160 161void 162Process::startup() 163{ 164 if (threadContexts.empty()) 165 fatal("Process %s is not associated with any CPUs!\n", name()); 166 167 // first thread context for this process... initialize & enable 168 ThreadContext *tc = threadContexts[0]; 169 170 // mark this context as active so it will start ticking. 171 tc->activate(0); 172 173 Port *mem_port; 174 mem_port = system->physmem->getPort("functional"); 175 initVirtMem = new TranslatingPort("process init port", pTable, true); 176 mem_port->setPeer(initVirtMem); 177 initVirtMem->setPeer(mem_port); 178} 179 180void 181Process::replaceThreadContext(ThreadContext *tc, int tcIndex) 182{ 183 if (tcIndex >= threadContexts.size()) { 184 panic("replaceThreadContext: bad tcIndex, %d >= %d\n", 185 tcIndex, threadContexts.size()); 186 } 187 188 threadContexts[tcIndex] = tc; 189} 190 191// map simulator fd sim_fd to target fd tgt_fd 192void 193Process::dup_fd(int sim_fd, int tgt_fd) 194{ 195 if (tgt_fd < 0 || tgt_fd > MAX_FD) 196 panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd); 197 198 fd_map[tgt_fd] = sim_fd; 199} 200 201 202// generate new target fd for sim_fd 203int 204Process::alloc_fd(int sim_fd) 205{ 206 // in case open() returns an error, don't allocate a new fd 207 if (sim_fd == -1) 208 return -1; 209 210 // find first free target fd 211 for (int free_fd = 0; free_fd < MAX_FD; ++free_fd) { 212 if (fd_map[free_fd] == -1) { 213 fd_map[free_fd] = sim_fd; 214 return free_fd; 215 } 216 } 217 218 panic("Process::alloc_fd: out of file descriptors!"); 219} 220 221 222// free target fd (e.g., after close) 223void 224Process::free_fd(int tgt_fd) 225{ 226 if (fd_map[tgt_fd] == -1) 227 warn("Process::free_fd: request to free unused fd %d", tgt_fd); 228 229 fd_map[tgt_fd] = -1; 230} 231 232 233// look up simulator fd for given target fd 234int 235Process::sim_fd(int tgt_fd) 236{ 237 if (tgt_fd > MAX_FD) 238 return -1; 239 240 return fd_map[tgt_fd]; 241} 242 243 244 245// 246// need to declare these here since there is no concrete Process type 247// that can be constructed (i.e., no REGISTER_SIM_OBJECT() macro call, 248// which is where these get declared for concrete types). 249// 250DEFINE_SIM_OBJECT_CLASS_NAME("Process", Process) 251 252 253//////////////////////////////////////////////////////////////////////// 254// 255// LiveProcess member definitions 256// 257//////////////////////////////////////////////////////////////////////// 258 259 260void 261copyStringArray(vector<string> &strings, Addr array_ptr, Addr data_ptr, 262 TranslatingPort* memPort) 263{ 264 Addr data_ptr_swap; 265 for (int i = 0; i < strings.size(); ++i) { 266 data_ptr_swap = htog(data_ptr); 267 memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr_swap, sizeof(Addr)); 268 memPort->writeString(data_ptr, strings[i].c_str()); 269 array_ptr += sizeof(Addr); 270 data_ptr += strings[i].size() + 1; 271 } 272 // add NULL terminator 273 data_ptr = 0; 274 275 memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr, sizeof(Addr)); 276} 277 278LiveProcess::LiveProcess(const string &nm, ObjectFile *_objFile, 279 System *_system, 280 int stdin_fd, int stdout_fd, int stderr_fd, 281 vector<string> &_argv, vector<string> &_envp) 282 : Process(nm, _system, stdin_fd, stdout_fd, stderr_fd), 283 objFile(_objFile), argv(_argv), envp(_envp) 284{ 285 prog_fname = argv[0]; 286 287 // load up symbols, if any... these may be used for debugging or 288 // profiling. 289 if (!debugSymbolTable) { 290 debugSymbolTable = new SymbolTable(); 291 if (!objFile->loadGlobalSymbols(debugSymbolTable) || 292 !objFile->loadLocalSymbols(debugSymbolTable)) { 293 // didn't load any symbols 294 delete debugSymbolTable; 295 debugSymbolTable = NULL; 296 } 297 } 298} 299 300void 301LiveProcess::argsInit(int intSize, int pageSize) 302{ 303 Process::startup(); 304 305 // load object file into target memory 306 objFile->loadSections(initVirtMem); 307 308 // Calculate how much space we need for arg & env arrays. 309 int argv_array_size = intSize * (argv.size() + 1); 310 int envp_array_size = intSize * (envp.size() + 1); 311 int arg_data_size = 0; 312 for (int i = 0; i < argv.size(); ++i) { 313 arg_data_size += argv[i].size() + 1; 314 } 315 int env_data_size = 0; 316 for (int i = 0; i < envp.size(); ++i) { 317 env_data_size += envp[i].size() + 1; 318 } 319 320 int space_needed = 321 argv_array_size + envp_array_size + arg_data_size + env_data_size; 322 if (space_needed < 32*1024) 323 space_needed = 32*1024; 324 325 // set bottom of stack 326 stack_min = stack_base - space_needed; 327 // align it 328 stack_min = roundDown(stack_min, pageSize); 329 stack_size = stack_base - stack_min; 330 // map memory 331 pTable->allocate(stack_min, roundUp(stack_size, pageSize)); 332 333 // map out initial stack contents 334 Addr argv_array_base = stack_min + intSize; // room for argc 335 Addr envp_array_base = argv_array_base + argv_array_size; 336 Addr arg_data_base = envp_array_base + envp_array_size; 337 Addr env_data_base = arg_data_base + arg_data_size; 338 339 // write contents to stack 340 uint64_t argc = argv.size(); 341 if (intSize == 8) 342 argc = htog((uint64_t)argc); 343 else if (intSize == 4) 344 argc = htog((uint32_t)argc); 345 else 346 panic("Unknown int size"); 347 348 initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize); 349 350 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 351 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 352 353 threadContexts[0]->setIntReg(ArgumentReg0, argc); 354 threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base); 355 threadContexts[0]->setIntReg(StackPointerReg, stack_min); 356 357 Addr prog_entry = objFile->entryPoint(); 358 threadContexts[0]->setPC(prog_entry); 359 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 360 361#if THE_ISA != ALPHA_ISA //e.g. MIPS or Sparc 362 threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 363#endif 364 365 num_processes++; 366} 367 368void 369LiveProcess::syscall(int64_t callnum, ThreadContext *tc) 370{ 371 num_syscalls++; 372 373 SyscallDesc *desc = getDesc(callnum); 374 if (desc == NULL) 375 fatal("Syscall %d out of range", callnum); 376 377 desc->doSyscall(callnum, this, tc); 378} 379 380LiveProcess * 381LiveProcess::create(const std::string &nm, System *system, int stdin_fd, 382 int stdout_fd, int stderr_fd, std::string executable, 383 std::vector<std::string> &argv, 384 std::vector<std::string> &envp) 385{ 386 LiveProcess *process = NULL; 387 388 ObjectFile *objFile = createObjectFile(executable); 389 if (objFile == NULL) { 390 fatal("Can't load object file %s", executable); 391 } 392 393#if THE_ISA == ALPHA_ISA 394 if (objFile->getArch() != ObjectFile::Alpha) 395 fatal("Object file architecture does not match compiled ISA (Alpha)."); 396 switch (objFile->getOpSys()) { 397 case ObjectFile::Tru64: 398 process = new AlphaTru64Process(nm, objFile, system, 399 stdin_fd, stdout_fd, stderr_fd, 400 argv, envp); 401 break; 402 403 case ObjectFile::Linux: 404 process = new AlphaLinuxProcess(nm, objFile, system, 405 stdin_fd, stdout_fd, stderr_fd, 406 argv, envp); 407 break; 408 409 default: 410 fatal("Unknown/unsupported operating system."); 411 } 412#elif THE_ISA == SPARC_ISA 413 if (objFile->getArch() != ObjectFile::SPARC) 414 fatal("Object file architecture does not match compiled ISA (SPARC)."); 415 switch (objFile->getOpSys()) { 416 case ObjectFile::Linux: 417 process = new SparcLinuxProcess(nm, objFile, system, 418 stdin_fd, stdout_fd, stderr_fd, 419 argv, envp); 420 break; 421 422 423 case ObjectFile::Solaris: 424 process = new SparcSolarisProcess(nm, objFile, system, 425 stdin_fd, stdout_fd, stderr_fd, 426 argv, envp); 427 break; 428 default: 429 fatal("Unknown/unsupported operating system."); 430 } 431#elif THE_ISA == MIPS_ISA 432 if (objFile->getArch() != ObjectFile::Mips) 433 fatal("Object file architecture does not match compiled ISA (MIPS)."); 434 switch (objFile->getOpSys()) { 435 case ObjectFile::Linux: 436 process = new MipsLinuxProcess(nm, objFile, system, 437 stdin_fd, stdout_fd, stderr_fd, 438 argv, envp); 439 break; 440 441 default: 442 fatal("Unknown/unsupported operating system."); 443 } 444#else 445#error "THE_ISA not set" 446#endif 447 448 449 if (process == NULL) 450 fatal("Unknown error creating process object."); 451 return process; 452} 453 454 455BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess) 456 457 VectorParam<string> cmd; 458 Param<string> executable; 459 Param<string> input; 460 Param<string> output; 461 VectorParam<string> env; 462 SimObjectParam<System *> system;
| 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 "base/intmath.hh" 39#include "base/loader/object_file.hh" 40#include "base/loader/symtab.hh" 41#include "base/statistics.hh" 42#include "config/full_system.hh" 43#include "cpu/thread_context.hh" 44#include "mem/page_table.hh" 45#include "mem/physical.hh" 46#include "mem/translating_port.hh" 47#include "sim/builder.hh" 48#include "sim/process.hh" 49#include "sim/stats.hh" 50#include "sim/syscall_emul.hh" 51#include "sim/system.hh" 52 53#include "arch/isa_specific.hh" 54#if THE_ISA == ALPHA_ISA 55#include "arch/alpha/linux/process.hh" 56#include "arch/alpha/tru64/process.hh" 57#elif THE_ISA == SPARC_ISA 58#include "arch/sparc/linux/process.hh" 59#include "arch/sparc/solaris/process.hh" 60#elif THE_ISA == MIPS_ISA 61#include "arch/mips/linux/process.hh" 62#else 63#error "THE_ISA not set" 64#endif 65 66 67using namespace std; 68using namespace TheISA; 69 70// 71// The purpose of this code is to fake the loader & syscall mechanism 72// when there's no OS: thus there's no resone to use it in FULL_SYSTEM 73// mode when we do have an OS 74// 75#if FULL_SYSTEM 76#error "process.cc not compatible with FULL_SYSTEM" 77#endif 78 79// current number of allocated processes 80int num_processes = 0; 81 82Process::Process(const string &nm, 83 System *_system, 84 int stdin_fd, // initial I/O descriptors 85 int stdout_fd, 86 int stderr_fd) 87 : SimObject(nm), system(_system) 88{ 89 // initialize first 3 fds (stdin, stdout, stderr) 90 fd_map[STDIN_FILENO] = stdin_fd; 91 fd_map[STDOUT_FILENO] = stdout_fd; 92 fd_map[STDERR_FILENO] = stderr_fd; 93 94 // mark remaining fds as free 95 for (int i = 3; i <= MAX_FD; ++i) { 96 fd_map[i] = -1; 97 } 98 99 mmap_start = mmap_end = 0; 100 nxm_start = nxm_end = 0; 101 pTable = new PageTable(system); 102 // other parameters will be initialized when the program is loaded 103} 104 105 106void 107Process::regStats() 108{ 109 using namespace Stats; 110 111 num_syscalls 112 .name(name() + ".PROG:num_syscalls") 113 .desc("Number of system calls") 114 ; 115} 116 117// 118// static helper functions 119// 120int 121Process::openInputFile(const string &filename) 122{ 123 int fd = open(filename.c_str(), O_RDONLY); 124 125 if (fd == -1) { 126 perror(NULL); 127 cerr << "unable to open \"" << filename << "\" for reading\n"; 128 fatal("can't open input file"); 129 } 130 131 return fd; 132} 133 134 135int 136Process::openOutputFile(const string &filename) 137{ 138 int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774); 139 140 if (fd == -1) { 141 perror(NULL); 142 cerr << "unable to open \"" << filename << "\" for writing\n"; 143 fatal("can't open output file"); 144 } 145 146 return fd; 147} 148 149 150int 151Process::registerThreadContext(ThreadContext *tc) 152{ 153 // add to list 154 int myIndex = threadContexts.size(); 155 threadContexts.push_back(tc); 156 157 // return CPU number to caller 158 return myIndex; 159} 160 161void 162Process::startup() 163{ 164 if (threadContexts.empty()) 165 fatal("Process %s is not associated with any CPUs!\n", name()); 166 167 // first thread context for this process... initialize & enable 168 ThreadContext *tc = threadContexts[0]; 169 170 // mark this context as active so it will start ticking. 171 tc->activate(0); 172 173 Port *mem_port; 174 mem_port = system->physmem->getPort("functional"); 175 initVirtMem = new TranslatingPort("process init port", pTable, true); 176 mem_port->setPeer(initVirtMem); 177 initVirtMem->setPeer(mem_port); 178} 179 180void 181Process::replaceThreadContext(ThreadContext *tc, int tcIndex) 182{ 183 if (tcIndex >= threadContexts.size()) { 184 panic("replaceThreadContext: bad tcIndex, %d >= %d\n", 185 tcIndex, threadContexts.size()); 186 } 187 188 threadContexts[tcIndex] = tc; 189} 190 191// map simulator fd sim_fd to target fd tgt_fd 192void 193Process::dup_fd(int sim_fd, int tgt_fd) 194{ 195 if (tgt_fd < 0 || tgt_fd > MAX_FD) 196 panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd); 197 198 fd_map[tgt_fd] = sim_fd; 199} 200 201 202// generate new target fd for sim_fd 203int 204Process::alloc_fd(int sim_fd) 205{ 206 // in case open() returns an error, don't allocate a new fd 207 if (sim_fd == -1) 208 return -1; 209 210 // find first free target fd 211 for (int free_fd = 0; free_fd < MAX_FD; ++free_fd) { 212 if (fd_map[free_fd] == -1) { 213 fd_map[free_fd] = sim_fd; 214 return free_fd; 215 } 216 } 217 218 panic("Process::alloc_fd: out of file descriptors!"); 219} 220 221 222// free target fd (e.g., after close) 223void 224Process::free_fd(int tgt_fd) 225{ 226 if (fd_map[tgt_fd] == -1) 227 warn("Process::free_fd: request to free unused fd %d", tgt_fd); 228 229 fd_map[tgt_fd] = -1; 230} 231 232 233// look up simulator fd for given target fd 234int 235Process::sim_fd(int tgt_fd) 236{ 237 if (tgt_fd > MAX_FD) 238 return -1; 239 240 return fd_map[tgt_fd]; 241} 242 243 244 245// 246// need to declare these here since there is no concrete Process type 247// that can be constructed (i.e., no REGISTER_SIM_OBJECT() macro call, 248// which is where these get declared for concrete types). 249// 250DEFINE_SIM_OBJECT_CLASS_NAME("Process", Process) 251 252 253//////////////////////////////////////////////////////////////////////// 254// 255// LiveProcess member definitions 256// 257//////////////////////////////////////////////////////////////////////// 258 259 260void 261copyStringArray(vector<string> &strings, Addr array_ptr, Addr data_ptr, 262 TranslatingPort* memPort) 263{ 264 Addr data_ptr_swap; 265 for (int i = 0; i < strings.size(); ++i) { 266 data_ptr_swap = htog(data_ptr); 267 memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr_swap, sizeof(Addr)); 268 memPort->writeString(data_ptr, strings[i].c_str()); 269 array_ptr += sizeof(Addr); 270 data_ptr += strings[i].size() + 1; 271 } 272 // add NULL terminator 273 data_ptr = 0; 274 275 memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr, sizeof(Addr)); 276} 277 278LiveProcess::LiveProcess(const string &nm, ObjectFile *_objFile, 279 System *_system, 280 int stdin_fd, int stdout_fd, int stderr_fd, 281 vector<string> &_argv, vector<string> &_envp) 282 : Process(nm, _system, stdin_fd, stdout_fd, stderr_fd), 283 objFile(_objFile), argv(_argv), envp(_envp) 284{ 285 prog_fname = argv[0]; 286 287 // load up symbols, if any... these may be used for debugging or 288 // profiling. 289 if (!debugSymbolTable) { 290 debugSymbolTable = new SymbolTable(); 291 if (!objFile->loadGlobalSymbols(debugSymbolTable) || 292 !objFile->loadLocalSymbols(debugSymbolTable)) { 293 // didn't load any symbols 294 delete debugSymbolTable; 295 debugSymbolTable = NULL; 296 } 297 } 298} 299 300void 301LiveProcess::argsInit(int intSize, int pageSize) 302{ 303 Process::startup(); 304 305 // load object file into target memory 306 objFile->loadSections(initVirtMem); 307 308 // Calculate how much space we need for arg & env arrays. 309 int argv_array_size = intSize * (argv.size() + 1); 310 int envp_array_size = intSize * (envp.size() + 1); 311 int arg_data_size = 0; 312 for (int i = 0; i < argv.size(); ++i) { 313 arg_data_size += argv[i].size() + 1; 314 } 315 int env_data_size = 0; 316 for (int i = 0; i < envp.size(); ++i) { 317 env_data_size += envp[i].size() + 1; 318 } 319 320 int space_needed = 321 argv_array_size + envp_array_size + arg_data_size + env_data_size; 322 if (space_needed < 32*1024) 323 space_needed = 32*1024; 324 325 // set bottom of stack 326 stack_min = stack_base - space_needed; 327 // align it 328 stack_min = roundDown(stack_min, pageSize); 329 stack_size = stack_base - stack_min; 330 // map memory 331 pTable->allocate(stack_min, roundUp(stack_size, pageSize)); 332 333 // map out initial stack contents 334 Addr argv_array_base = stack_min + intSize; // room for argc 335 Addr envp_array_base = argv_array_base + argv_array_size; 336 Addr arg_data_base = envp_array_base + envp_array_size; 337 Addr env_data_base = arg_data_base + arg_data_size; 338 339 // write contents to stack 340 uint64_t argc = argv.size(); 341 if (intSize == 8) 342 argc = htog((uint64_t)argc); 343 else if (intSize == 4) 344 argc = htog((uint32_t)argc); 345 else 346 panic("Unknown int size"); 347 348 initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize); 349 350 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 351 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 352 353 threadContexts[0]->setIntReg(ArgumentReg0, argc); 354 threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base); 355 threadContexts[0]->setIntReg(StackPointerReg, stack_min); 356 357 Addr prog_entry = objFile->entryPoint(); 358 threadContexts[0]->setPC(prog_entry); 359 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 360 361#if THE_ISA != ALPHA_ISA //e.g. MIPS or Sparc 362 threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 363#endif 364 365 num_processes++; 366} 367 368void 369LiveProcess::syscall(int64_t callnum, ThreadContext *tc) 370{ 371 num_syscalls++; 372 373 SyscallDesc *desc = getDesc(callnum); 374 if (desc == NULL) 375 fatal("Syscall %d out of range", callnum); 376 377 desc->doSyscall(callnum, this, tc); 378} 379 380LiveProcess * 381LiveProcess::create(const std::string &nm, System *system, int stdin_fd, 382 int stdout_fd, int stderr_fd, std::string executable, 383 std::vector<std::string> &argv, 384 std::vector<std::string> &envp) 385{ 386 LiveProcess *process = NULL; 387 388 ObjectFile *objFile = createObjectFile(executable); 389 if (objFile == NULL) { 390 fatal("Can't load object file %s", executable); 391 } 392 393#if THE_ISA == ALPHA_ISA 394 if (objFile->getArch() != ObjectFile::Alpha) 395 fatal("Object file architecture does not match compiled ISA (Alpha)."); 396 switch (objFile->getOpSys()) { 397 case ObjectFile::Tru64: 398 process = new AlphaTru64Process(nm, objFile, system, 399 stdin_fd, stdout_fd, stderr_fd, 400 argv, envp); 401 break; 402 403 case ObjectFile::Linux: 404 process = new AlphaLinuxProcess(nm, objFile, system, 405 stdin_fd, stdout_fd, stderr_fd, 406 argv, envp); 407 break; 408 409 default: 410 fatal("Unknown/unsupported operating system."); 411 } 412#elif THE_ISA == SPARC_ISA 413 if (objFile->getArch() != ObjectFile::SPARC) 414 fatal("Object file architecture does not match compiled ISA (SPARC)."); 415 switch (objFile->getOpSys()) { 416 case ObjectFile::Linux: 417 process = new SparcLinuxProcess(nm, objFile, system, 418 stdin_fd, stdout_fd, stderr_fd, 419 argv, envp); 420 break; 421 422 423 case ObjectFile::Solaris: 424 process = new SparcSolarisProcess(nm, objFile, system, 425 stdin_fd, stdout_fd, stderr_fd, 426 argv, envp); 427 break; 428 default: 429 fatal("Unknown/unsupported operating system."); 430 } 431#elif THE_ISA == MIPS_ISA 432 if (objFile->getArch() != ObjectFile::Mips) 433 fatal("Object file architecture does not match compiled ISA (MIPS)."); 434 switch (objFile->getOpSys()) { 435 case ObjectFile::Linux: 436 process = new MipsLinuxProcess(nm, objFile, system, 437 stdin_fd, stdout_fd, stderr_fd, 438 argv, envp); 439 break; 440 441 default: 442 fatal("Unknown/unsupported operating system."); 443 } 444#else 445#error "THE_ISA not set" 446#endif 447 448 449 if (process == NULL) 450 fatal("Unknown error creating process object."); 451 return process; 452} 453 454 455BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess) 456 457 VectorParam<string> cmd; 458 Param<string> executable; 459 Param<string> input; 460 Param<string> output; 461 VectorParam<string> env; 462 SimObjectParam<System *> system;
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