process.cc revision 2561
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 29#include "arch/sparc/isa_traits.hh" 30#include "arch/sparc/process.hh" 31#include "arch/sparc/linux/process.hh" 32#include "base/loader/object_file.hh" 33#include "base/misc.hh" 34#include "cpu/exec_context.hh" 35#include "mem/page_table.hh" 36#include "mem/translating_port.hh" 37#include "sim/builder.hh" 38#include "sim/system.hh" 39 40using namespace std; 41using namespace SparcISA; 42 43SparcLiveProcess * 44SparcLiveProcess::create(const std::string &nm, System *system, int stdin_fd, 45 int stdout_fd, int stderr_fd, std::string executable, 46 std::vector<std::string> &argv, std::vector<std::string> &envp) 47{ 48 SparcLiveProcess *process = NULL; 49 50 ObjectFile *objFile = createObjectFile(executable); 51 if (objFile == NULL) { 52 fatal("Can't load object file %s", executable); 53 } 54 55 56 if (objFile->getArch() != ObjectFile::SPARC) 57 fatal("Object file does not match architecture."); 58 switch (objFile->getOpSys()) { 59 case ObjectFile::Linux: 60 process = new SparcLinuxProcess(nm, objFile, system, 61 stdin_fd, stdout_fd, stderr_fd, 62 argv, envp); 63 break; 64 65 case ObjectFile::Solaris: 66 default: 67 fatal("Unknown/unsupported operating system."); 68 } 69 70 if (process == NULL) 71 fatal("Unknown error creating process object."); 72 return process; 73} 74 75SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile, 76 System *_system, int stdin_fd, int stdout_fd, int stderr_fd, 77 std::vector<std::string> &argv, std::vector<std::string> &envp) 78 : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd, 79 argv, envp) 80{ 81 82 // XXX all the below need to be updated for SPARC - Ali 83 brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 84 brk_point = roundUp(brk_point, VMPageSize); 85 86 // Set up stack. On SPARC Linux, stack goes from the top of memory 87 // downward, less the hole for the kernel address space. 88 stack_base = ((Addr)0x80000000000); 89 90 // Set up region for mmaps. Tru64 seems to start just above 0 and 91 // grow up from there. 92 mmap_start = mmap_end = 0x10000; 93 94 // Set pointer for next thread stack. Reserve 8M for main stack. 95 next_thread_stack_base = stack_base - (8 * 1024 * 1024); 96} 97 98void 99SparcLiveProcess::startup() 100{ 101 argsInit(MachineBytes, VMPageSize); 102 103 //From the SPARC ABI 104 105 //The process runs in user mode 106 execContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE_PRIV, 0); 107 //Interrupts are enabled 108 execContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE_IE, 1); 109 //Round to nearest 110 execContexts[0]->setMiscRegWithEffect(MISCREG_FSR_RD, 0); 111 //Floating point traps are not enabled 112 execContexts[0]->setMiscRegWithEffect(MISCREG_FSR_TEM, 0); 113 //Turn non standard mode off 114 execContexts[0]->setMiscRegWithEffect(MISCREG_FSR_NS, 0); 115 //The floating point queue is empty 116 execContexts[0]->setMiscRegWithEffect(MISCREG_FSR_QNE, 0); 117 //There are no accrued eexecContext[0]eptions 118 execContexts[0]->setMiscRegWithEffect(MISCREG_FSR_AEXC, 0); 119 //There are no current eexecContext[0]eptions 120 execContexts[0]->setMiscRegWithEffect(MISCREG_FSR_CEXC, 0); 121 122 /* 123 * Register window management registers 124 */ 125 126 //No windows contain info from other programs 127 execContexts[0]->setMiscRegWithEffect(MISCREG_OTHERWIN, 0); 128 //There are no windows to pop 129 execContexts[0]->setMiscRegWithEffect(MISCREG_CANRESTORE, 0); 130 //All windows are available to save into 131 execContexts[0]->setMiscRegWithEffect(MISCREG_CANSAVE, NWindows - 2); 132 //All windows are "clean" 133 execContexts[0]->setMiscRegWithEffect(MISCREG_CLEANWIN, NWindows); 134 //Start with register window 0 135 execContexts[0]->setMiscRegWithEffect(MISCREG_CWP, 0); 136} 137 138void 139SparcLiveProcess::argsInit(int intSize, int pageSize) 140{ 141 Process::startup(); 142 143 Addr alignmentMask = ~(intSize - 1); 144 145 // load object file into target memory 146 objFile->loadSections(initVirtMem); 147 148 //Figure out how big the initial stack needs to be 149 150 int aux_data_size = 0; 151 //Figure out the aux_data_size? 152 int env_data_size = 0; 153 for (int i = 0; i < envp.size(); ++i) { 154 env_data_size += envp[i].size() + 1; 155 } 156 int arg_data_size = 0; 157 for (int i = 0; i < argv.size(); ++i) { 158 arg_data_size += argv[i].size() + 1; 159 } 160 161 int aux_array_size = intSize * 2 * (auxv.size() + 1); 162 163 int argv_array_size = intSize * (argv.size() + 1); 164 int envp_array_size = intSize * (envp.size() + 1); 165 166 int argc_size = intSize; 167 int window_save_size = intSize * 16; 168 169 int info_block_size = 170 (aux_data_size + 171 env_data_size + 172 arg_data_size + 173 ~alignmentMask) & alignmentMask; 174 175 int info_block_padding = 176 info_block_size - 177 aux_data_size - 178 env_data_size - 179 arg_data_size; 180 181 int space_needed = 182 info_block_size + 183 aux_array_size + 184 envp_array_size + 185 argv_array_size + 186 argc_size + 187 window_save_size; 188 189 stack_min = stack_base - space_needed; 190 stack_min &= alignmentMask; 191 stack_size = stack_base - stack_min; 192 193 // map memory 194 pTable->allocate(roundDown(stack_min, pageSize), 195 roundUp(stack_size, pageSize)); 196 197 // map out initial stack contents 198 Addr aux_data_base = stack_base - aux_data_size - info_block_padding; 199 Addr env_data_base = aux_data_base - env_data_size; 200 Addr arg_data_base = env_data_base - arg_data_size; 201 Addr aux_array_base = arg_data_base - aux_array_size; 202 Addr envp_array_base = aux_array_base - envp_array_size; 203 Addr argv_array_base = envp_array_base - argv_array_size; 204 Addr argc_base = argv_array_base - argc_size; 205 Addr window_save_base = argc_base - window_save_size; 206 207 DPRINTF(Sparc, "The addresses of items on the initial stack:\n"); 208 DPRINTF(Sparc, "0x%x - aux data\n", aux_data_base); 209 DPRINTF(Sparc, "0x%x - env data\n", env_data_base); 210 DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base); 211 DPRINTF(Sparc, "0x%x - aux array\n", aux_array_base); 212 DPRINTF(Sparc, "0x%x - env array\n", envp_array_base); 213 DPRINTF(Sparc, "0x%x - arg array\n", argv_array_base); 214 DPRINTF(Sparc, "0x%x - argc \n", argc_base); 215 DPRINTF(Sparc, "0x%x - window save\n", window_save_base); 216 DPRINTF(Sparc, "0x%x - stack min\n", stack_min); 217 218 // write contents to stack 219 uint64_t argc = argv.size(); 220 221 //Copy the aux stuff? For now just put in the null vect 222 const uint64_t zero = 0; 223 initVirtMem->writeBlob(aux_array_base, (uint8_t*)&zero, 2 * intSize); 224 225 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 226 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 227 228 initVirtMem->writeBlob(argc_base, (uint8_t*)&argc, intSize); 229 230 execContexts[0]->setIntReg(ArgumentReg0, argc); 231 execContexts[0]->setIntReg(ArgumentReg1, argv_array_base); 232 execContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias); 233 234 Addr prog_entry = objFile->entryPoint(); 235 execContexts[0]->setPC(prog_entry); 236 execContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 237 execContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 238 239// num_processes++; 240} 241 242 243BEGIN_DECLARE_SIM_OBJECT_PARAMS(SparcLiveProcess) 244 245 VectorParam<string> cmd; 246 Param<string> executable; 247 Param<string> input; 248 Param<string> output; 249 VectorParam<string> env; 250 SimObjectParam<System *> system; 251 252END_DECLARE_SIM_OBJECT_PARAMS(SparcLiveProcess) 253 254 255BEGIN_INIT_SIM_OBJECT_PARAMS(SparcLiveProcess) 256 257 INIT_PARAM(cmd, "command line (executable plus arguments)"), 258 INIT_PARAM(executable, "executable (overrides cmd[0] if set)"), 259 INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"), 260 INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"), 261 INIT_PARAM(env, "environment settings"), 262 INIT_PARAM(system, "system") 263 264END_INIT_SIM_OBJECT_PARAMS(SparcLiveProcess) 265 266 267CREATE_SIM_OBJECT(SparcLiveProcess) 268{ 269 string in = input; 270 string out = output; 271 272 // initialize file descriptors to default: same as simulator 273 int stdin_fd, stdout_fd, stderr_fd; 274 275 if (in == "stdin" || in == "cin") 276 stdin_fd = STDIN_FILENO; 277 else 278 stdin_fd = Process::openInputFile(input); 279 280 if (out == "stdout" || out == "cout") 281 stdout_fd = STDOUT_FILENO; 282 else if (out == "stderr" || out == "cerr") 283 stdout_fd = STDERR_FILENO; 284 else 285 stdout_fd = Process::openOutputFile(out); 286 287 stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO; 288 289 return SparcLiveProcess::create(getInstanceName(), system, 290 stdin_fd, stdout_fd, stderr_fd, 291 (string)executable == "" ? cmd[0] : executable, 292 cmd, env); 293} 294 295 296REGISTER_SIM_OBJECT("SparcLiveProcess", SparcLiveProcess) 297 298 299