src/arch/mips/process.cc

   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  *          Korey Sewell
  31  */
  32
  33 #include "arch/mips/isa_traits.hh"
  34 #include "arch/mips/process.hh"
  35 #include "arch/mips/linux/process.hh"
  36 #include "base/loader/object_file.hh"
  37 #include "base/misc.hh"
  38 #include "cpu/thread_context.hh"
  39 #include "sim/builder.hh"
  40 #include "sim/system.hh"
  41
  42 using namespace std;
  43 using namespace MipsISA;
  44
  45
  46 MipsLiveProcess *
  47 MipsLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
  48         int stdout_fd, int stderr_fd, std::string executable,
  49         std::vector<std::string> &argv, std::vector<std::string> &envp)
  50 {
  51     MipsLiveProcess *process = NULL;
  52
  53     ObjectFile *objFile = createObjectFile(executable);
  54     if (objFile == NULL) {
  55         fatal("Can't load object file %s", executable);
  56     }
  57
  58
  59     if (objFile->getArch() != ObjectFile::Mips)
  60         fatal("Object file does not match MIPS architecture.");
  61
  62     switch (objFile->getOpSys()) {
  63       case ObjectFile::Linux:
  64         process = new MipsLinuxProcess(nm, objFile, system,
  65                                         stdin_fd, stdout_fd, stderr_fd,
  66                                         argv, envp);
  67         break;
  68
  69       default:
  70         fatal("Unknown/unsupported operating system.");
  71     }
  72
  73     if (process == NULL)
  74         fatal("Unknown error creating process object.");
  75     return process;
  76 }
  77
  78 MipsLiveProcess::MipsLiveProcess(const std::string &nm, ObjectFile *objFile,
  79         System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
  80         std::vector<std::string> &argv, std::vector<std::string> &envp)
  81     : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
  82         argv, envp)
  83 {
  84     // Set up stack. On MIPS, stack starts at the top of kuseg
  85     // user address space. MIPS stack grows down from here
  86     stack_base = 0x7FFFFFFF;
  87
  88     // Set pointer for next thread stack.  Reserve 8M for main stack.
  89     next_thread_stack_base = stack_base - (8 * 1024 * 1024);
  90
  91     // Set up break point (Top of Heap)
  92     brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
  93     brk_point = roundUp(brk_point, VMPageSize);
  94
  95     // Set up region for mmaps. For now, start at bottom of kuseg space.
  96     mmap_start = mmap_end = 0x10000;
  97 }
  98
  99 void
 100 MipsLiveProcess::startup()
 101 {
 102     argsInit(MachineBytes, VMPageSize);
 103 }
 104
 105
 106
 107
 108 BEGIN_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
 109
 110     VectorParam<string> cmd;
 111     Param<string> executable;
 112     Param<string> input;
 113     Param<string> output;
 114     VectorParam<string> env;
 115     SimObjectParam<System *> system;
 116
 117 END_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
 118
 119
 120 BEGIN_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
 121
 122     INIT_PARAM(cmd, "command line (executable plus arguments)"),
 123     INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
 124     INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
 125     INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
 126     INIT_PARAM(env, "environment settings"),
 127     INIT_PARAM(system, "system")
 128
 129 END_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
 130
 131
 132 CREATE_SIM_OBJECT(MipsLiveProcess)
 133 {
 134     string in = input;
 135     string out = output;
 136
 137     // initialize file descriptors to default: same as simulator
 138     int stdin_fd, stdout_fd, stderr_fd;
 139
 140     if (in == "stdin" || in == "cin")
 141         stdin_fd = STDIN_FILENO;
 142     else
 143         stdin_fd = Process::openInputFile(input);
 144
 145     if (out == "stdout" || out == "cout")
 146         stdout_fd = STDOUT_FILENO;
 147     else if (out == "stderr" || out == "cerr")
 148         stdout_fd = STDERR_FILENO;
 149     else
 150         stdout_fd = Process::openOutputFile(out);
 151
 152     stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
 153
 154     return MipsLiveProcess::create(getInstanceName(), system,
 155                                stdin_fd, stdout_fd, stderr_fd,
 156                                (string)executable == "" ? cmd[0] : executable,
 157                                cmd, env);
 158 }
 159
 160
 161 REGISTER_SIM_OBJECT("MipsLiveProcess", MipsLiveProcess)
 162
 163