process.cc revision 2665:a124942bacb8 
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/mips/isa_traits.hh"
33#include "arch/mips/process.hh"
34#include "arch/mips/linux/process.hh"
35#include "base/loader/object_file.hh"
36#include "base/misc.hh"
37#include "cpu/exec_context.hh"
38#include "sim/builder.hh"
39#include "sim/system.hh"
40
41using namespace std;
42using namespace MipsISA;
43
44
45MipsLiveProcess *
46MipsLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
47        int stdout_fd, int stderr_fd, std::string executable,
48        std::vector<std::string> &argv, std::vector<std::string> &envp)
49{
50    MipsLiveProcess *process = NULL;
51
52    ObjectFile *objFile = createObjectFile(executable);
53    if (objFile == NULL) {
54        fatal("Can't load object file %s", executable);
55    }
56
57
58    if (objFile->getArch() != ObjectFile::Mips)
59        fatal("Object file does not match architecture.");
60    switch (objFile->getOpSys()) {
61      case ObjectFile::Linux:
62        process = new MipsLinuxProcess(nm, objFile, system,
63                                        stdin_fd, stdout_fd, stderr_fd,
64                                        argv, envp);
65        break;
66
67      default:
68        fatal("Unknown/unsupported operating system.");
69    }
70
71    if (process == NULL)
72        fatal("Unknown error creating process object.");
73    return process;
74}
75
76MipsLiveProcess::MipsLiveProcess(const std::string &nm, ObjectFile *objFile,
77        System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
78        std::vector<std::string> &argv, std::vector<std::string> &envp)
79    : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
80        argv, envp)
81{
82
83    // XXX all the below need to be updated for SPARC - Ali
84    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
85    brk_point = roundUp(brk_point, VMPageSize);
86
87    // Set up stack.  On Alpha, stack goes below text section.  This
88    // code should get moved to some architecture-specific spot.
89    stack_base = objFile->textBase() - (409600+4096);
90
91    // Set up region for mmaps.  Tru64 seems to start just above 0 and
92    // grow up from there.
93    mmap_start = mmap_end = 0x10000;
94
95    // Set pointer for next thread stack.  Reserve 8M for main stack.
96    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
97
98}
99
100void
101MipsLiveProcess::startup()
102{
103    argsInit(MachineBytes, VMPageSize);
104}
105
106
107
108
109BEGIN_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
110
111    VectorParam<string> cmd;
112    Param<string> executable;
113    Param<string> input;
114    Param<string> output;
115    VectorParam<string> env;
116    SimObjectParam<System *> system;
117
118END_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
119
120
121BEGIN_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
122
123    INIT_PARAM(cmd, "command line (executable plus arguments)"),
124    INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
125    INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
126    INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
127    INIT_PARAM(env, "environment settings"),
128    INIT_PARAM(system, "system")
129
130END_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
131
132
133CREATE_SIM_OBJECT(MipsLiveProcess)
134{
135    string in = input;
136    string out = output;
137
138    // initialize file descriptors to default: same as simulator
139    int stdin_fd, stdout_fd, stderr_fd;
140
141    if (in == "stdin" || in == "cin")
142        stdin_fd = STDIN_FILENO;
143    else
144        stdin_fd = Process::openInputFile(input);
145
146    if (out == "stdout" || out == "cout")
147        stdout_fd = STDOUT_FILENO;
148    else if (out == "stderr" || out == "cerr")
149        stdout_fd = STDERR_FILENO;
150    else
151        stdout_fd = Process::openOutputFile(out);
152
153    stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
154
155    return MipsLiveProcess::create(getInstanceName(), system,
156                               stdin_fd, stdout_fd, stderr_fd,
157                               (string)executable == "" ? cmd[0] : executable,
158                               cmd, env);
159}
160
161
162REGISTER_SIM_OBJECT("MipsLiveProcess", MipsLiveProcess)
163
164
165