process.cc revision 2686:f0d591379ac3 
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
42using namespace std;
43using namespace MipsISA;
44
45
46MipsLiveProcess *
47MipsLiveProcess::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
78MipsLiveProcess::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
99void
100MipsLiveProcess::startup()
101{
102    argsInit(MachineBytes, VMPageSize);
103}
104
105
106
107
108BEGIN_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
117END_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
118
119
120BEGIN_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
129END_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
130
131
132CREATE_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
161REGISTER_SIM_OBJECT("MipsLiveProcess", MipsLiveProcess)
162
163
164