process.cc revision 2680
1/* 2 * Copyright (c) 2003-2004 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: Gabe Black 29 * Ali Saidi 30 */ 31 32#include "arch/sparc/isa_traits.hh" 33#include "arch/sparc/process.hh" 34#include "arch/sparc/linux/process.hh" 35#include "arch/sparc/solaris/process.hh" 36#include "base/loader/object_file.hh" 37#include "base/misc.hh" 38#include "cpu/thread_context.hh" 39#include "mem/page_table.hh" 40#include "mem/translating_port.hh" 41#include "sim/builder.hh" 42#include "sim/system.hh" 43 44using namespace std; 45using namespace SparcISA; 46 47SparcLiveProcess * 48SparcLiveProcess::create(const std::string &nm, System *system, int stdin_fd, 49 int stdout_fd, int stderr_fd, std::string executable, 50 std::vector<std::string> &argv, std::vector<std::string> &envp) 51{ 52 SparcLiveProcess *process = NULL; 53 54 ObjectFile *objFile = createObjectFile(executable); 55 if (objFile == NULL) { 56 fatal("Can't load object file %s", executable); 57 } 58 59 60 if (objFile->getArch() != ObjectFile::SPARC) 61 fatal("Object file with arch %x does not match architecture %x.", 62 objFile->getArch(), ObjectFile::SPARC); 63 switch (objFile->getOpSys()) { 64 case ObjectFile::Linux: 65 process = new SparcLinuxProcess(nm, objFile, system, 66 stdin_fd, stdout_fd, stderr_fd, 67 argv, envp); 68 break; 69 70 71 case ObjectFile::Solaris: 72 process = new SparcSolarisProcess(nm, objFile, system, 73 stdin_fd, stdout_fd, stderr_fd, 74 argv, envp); 75 break; 76 default: 77 fatal("Unknown/unsupported operating system."); 78 } 79 80 if (process == NULL) 81 fatal("Unknown error creating process object."); 82 return process; 83} 84 85SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile, 86 System *_system, int stdin_fd, int stdout_fd, int stderr_fd, 87 std::vector<std::string> &argv, std::vector<std::string> &envp) 88 : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd, 89 argv, envp) 90{ 91 92 // XXX all the below need to be updated for SPARC - Ali 93 brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 94 brk_point = roundUp(brk_point, VMPageSize); 95 96 // Set up stack. On SPARC Linux, stack goes from the top of memory 97 // downward, less the hole for the kernel address space. 98 stack_base = ((Addr)0x80000000000ULL); 99 100 // Set up region for mmaps. Tru64 seems to start just above 0 and 101 // grow up from there. 102 mmap_start = mmap_end = 0x800000; 103 104 // Set pointer for next thread stack. Reserve 8M for main stack. 105 next_thread_stack_base = stack_base - (8 * 1024 * 1024); 106} 107 108void 109SparcLiveProcess::startup() 110{ 111 argsInit(MachineBytes, VMPageSize); 112 113 //From the SPARC ABI 114 115 //The process runs in user mode 116 threadContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE, 0x02); 117 118 //Setup default FP state 119 threadContexts[0]->setMiscReg(MISCREG_FSR, 0); 120 121 threadContexts[0]->setMiscReg(MISCREG_TICK, 0); 122 // 123 /* 124 * Register window management registers 125 */ 126 127 //No windows contain info from other programs 128 threadContexts[0]->setMiscRegWithEffect(MISCREG_OTHERWIN, 0); 129 //There are no windows to pop 130 threadContexts[0]->setMiscRegWithEffect(MISCREG_CANRESTORE, 0); 131 //All windows are available to save into 132 threadContexts[0]->setMiscRegWithEffect(MISCREG_CANSAVE, NWindows - 2); 133 //All windows are "clean" 134 threadContexts[0]->setMiscRegWithEffect(MISCREG_CLEANWIN, NWindows); 135 //Start with register window 0 136 threadContexts[0]->setMiscRegWithEffect(MISCREG_CWP, 0); 137} 138 139m5_auxv_t buildAuxVect(int64_t type, int64_t val) 140{ 141 m5_auxv_t result; 142 result.a_type = TheISA::htog(type); 143 result.a_val = TheISA::htog(val); 144 return result; 145} 146 147void 148SparcLiveProcess::argsInit(int intSize, int pageSize) 149{ 150 Process::startup(); 151 152 Addr alignmentMask = ~(intSize - 1); 153 154 // load object file into target memory 155 objFile->loadSections(initVirtMem); 156 157 //These are the auxilliary vector types 158 enum auxTypes 159 { 160 SPARC_AT_HWCAP = 16, 161 SPARC_AT_PAGESZ = 6, 162 SPARC_AT_CLKTCK = 17, 163 SPARC_AT_PHDR = 3, 164 SPARC_AT_PHENT = 4, 165 SPARC_AT_PHNUM = 5, 166 SPARC_AT_BASE = 7, 167 SPARC_AT_FLAGS = 8, 168 SPARC_AT_ENTRY = 9, 169 SPARC_AT_UID = 11, 170 SPARC_AT_EUID = 12, 171 SPARC_AT_GID = 13, 172 SPARC_AT_EGID = 14 173 }; 174 175 enum hardwareCaps 176 { 177 M5_HWCAP_SPARC_FLUSH = 1, 178 M5_HWCAP_SPARC_STBAR = 2, 179 M5_HWCAP_SPARC_SWAP = 4, 180 M5_HWCAP_SPARC_MULDIV = 8, 181 M5_HWCAP_SPARC_V9 = 16, 182 //This one should technically only be set 183 //if there is a cheetah or cheetah_plus tlb, 184 //but we'll use it all the time 185 M5_HWCAP_SPARC_ULTRA3 = 32 186 }; 187 188 const int64_t hwcap = 189 M5_HWCAP_SPARC_FLUSH | 190 M5_HWCAP_SPARC_STBAR | 191 M5_HWCAP_SPARC_SWAP | 192 M5_HWCAP_SPARC_MULDIV | 193 M5_HWCAP_SPARC_V9 | 194 M5_HWCAP_SPARC_ULTRA3; 195 196 //Setup the auxilliary vectors. These will already have 197 //endian conversion. 198 auxv.push_back(buildAuxVect(SPARC_AT_EGID, 100)); 199 auxv.push_back(buildAuxVect(SPARC_AT_GID, 100)); 200 auxv.push_back(buildAuxVect(SPARC_AT_EUID, 100)); 201 auxv.push_back(buildAuxVect(SPARC_AT_UID, 100)); 202 //This would work, but the entry point is a protected member 203 //auxv.push_back(buildAuxVect(SPARC_AT_ENTRY, objFile->entry)); 204 auxv.push_back(buildAuxVect(SPARC_AT_FLAGS, 0)); 205 //This is the address of the elf "interpreter", which I don't 206 //think we currently set up. It should be set to 0 (I think) 207 //auxv.push_back(buildAuxVect(SPARC_AT_BASE, 0)); 208 //This is the number of headers which were in the original elf 209 //file. This information isn't avaibale by this point. 210 //auxv.push_back(buildAuxVect(SPARC_AT_PHNUM, 3)); 211 //This is the size of a program header entry. This isn't easy 212 //to compute here. 213 //auxv.push_back(buildAuxVect(SPARC_AT_PHENT, blah)); 214 //This is should be set to load_addr (whatever that is) + 215 //e_phoff. I think it's a pointer to the program headers. 216 //auxv.push_back(buildAuxVect(SPARC_AT_PHDR, blah)); 217 //This should be easy to get right, but I won't set it for now 218 //auxv.push_back(buildAuxVect(SPARC_AT_CLKTCK, blah)); 219 auxv.push_back(buildAuxVect(SPARC_AT_PAGESZ, SparcISA::VMPageSize)); 220 auxv.push_back(buildAuxVect(SPARC_AT_HWCAP, hwcap)); 221 222 //Figure out how big the initial stack needs to be 223 224 //Each auxilliary vector is two 8 byte words 225 int aux_data_size = 2 * intSize * auxv.size(); 226 int env_data_size = 0; 227 for (int i = 0; i < envp.size(); ++i) { 228 env_data_size += envp[i].size() + 1; 229 } 230 int arg_data_size = 0; 231 for (int i = 0; i < argv.size(); ++i) { 232 arg_data_size += argv[i].size() + 1; 233 } 234 235 int aux_array_size = intSize * 2 * (auxv.size() + 1); 236 237 int argv_array_size = intSize * (argv.size() + 1); 238 int envp_array_size = intSize * (envp.size() + 1); 239 240 int argc_size = intSize; 241 int window_save_size = intSize * 16; 242 243 int info_block_size = 244 (aux_data_size + 245 env_data_size + 246 arg_data_size + 247 ~alignmentMask) & alignmentMask; 248 249 int info_block_padding = 250 info_block_size - 251 aux_data_size - 252 env_data_size - 253 arg_data_size; 254 255 int space_needed = 256 info_block_size + 257 aux_array_size + 258 envp_array_size + 259 argv_array_size + 260 argc_size + 261 window_save_size; 262 263 stack_min = stack_base - space_needed; 264 stack_min &= alignmentMask; 265 stack_size = stack_base - stack_min; 266 267 // map memory 268 pTable->allocate(roundDown(stack_min, pageSize), 269 roundUp(stack_size, pageSize)); 270 271 // map out initial stack contents 272 Addr aux_data_base = stack_base - aux_data_size - info_block_padding; 273 Addr env_data_base = aux_data_base - env_data_size; 274 Addr arg_data_base = env_data_base - arg_data_size; 275 Addr auxv_array_base = arg_data_base - aux_array_size; 276 Addr envp_array_base = auxv_array_base - envp_array_size; 277 Addr argv_array_base = envp_array_base - argv_array_size; 278 Addr argc_base = argv_array_base - argc_size; 279 Addr window_save_base = argc_base - window_save_size; 280 281 DPRINTF(Sparc, "The addresses of items on the initial stack:\n"); 282 DPRINTF(Sparc, "0x%x - aux data\n", aux_data_base); 283 DPRINTF(Sparc, "0x%x - env data\n", env_data_base); 284 DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base); 285 DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base); 286 DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base); 287 DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base); 288 DPRINTF(Sparc, "0x%x - argc \n", argc_base); 289 DPRINTF(Sparc, "0x%x - window save\n", window_save_base); 290 DPRINTF(Sparc, "0x%x - stack min\n", stack_min); 291 292 // write contents to stack 293 uint64_t argc = argv.size(); 294 uint64_t guestArgc = TheISA::htog(argc); 295 296 //Copy the aux stuff 297 for(int x = 0; x < auxv.size(); x++) 298 { 299 initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize, 300 (uint8_t*)&(auxv[x].a_type), intSize); 301 initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize, 302 (uint8_t*)&(auxv[x].a_val), intSize); 303 } 304 //Write out the terminating zeroed auxilliary vector 305 const uint64_t zero = 0; 306 initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(), 307 (uint8_t*)&zero, 2 * intSize); 308 309 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 310 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 311 312 initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize); 313 314 threadContexts[0]->setIntReg(ArgumentReg0, argc); 315 threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base); 316 threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias); 317 318 Addr prog_entry = objFile->entryPoint(); 319 threadContexts[0]->setPC(prog_entry); 320 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 321 threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 322 323// num_processes++; 324} 325 326 327BEGIN_DECLARE_SIM_OBJECT_PARAMS(SparcLiveProcess) 328 329 VectorParam<string> cmd; 330 Param<string> executable; 331 Param<string> input; 332 Param<string> output; 333 VectorParam<string> env; 334 SimObjectParam<System *> system; 335 336END_DECLARE_SIM_OBJECT_PARAMS(SparcLiveProcess) 337 338 339BEGIN_INIT_SIM_OBJECT_PARAMS(SparcLiveProcess) 340 341 INIT_PARAM(cmd, "command line (executable plus arguments)"), 342 INIT_PARAM(executable, "executable (overrides cmd[0] if set)"), 343 INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"), 344 INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"), 345 INIT_PARAM(env, "environment settings"), 346 INIT_PARAM(system, "system") 347 348END_INIT_SIM_OBJECT_PARAMS(SparcLiveProcess) 349 350 351CREATE_SIM_OBJECT(SparcLiveProcess) 352{ 353 string in = input; 354 string out = output; 355 356 // initialize file descriptors to default: same as simulator 357 int stdin_fd, stdout_fd, stderr_fd; 358 359 if (in == "stdin" || in == "cin") 360 stdin_fd = STDIN_FILENO; 361 else 362 stdin_fd = Process::openInputFile(input); 363 364 if (out == "stdout" || out == "cout") 365 stdout_fd = STDOUT_FILENO; 366 else if (out == "stderr" || out == "cerr") 367 stdout_fd = STDERR_FILENO; 368 else 369 stdout_fd = Process::openOutputFile(out); 370 371 stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO; 372 373 return SparcLiveProcess::create(getInstanceName(), system, 374 stdin_fd, stdout_fd, stderr_fd, 375 (string)executable == "" ? cmd[0] : executable, 376 cmd, env); 377} 378 379 380REGISTER_SIM_OBJECT("SparcLiveProcess", SparcLiveProcess) 381 382 383