process.cc revision 2632:1bb2f91485ea 
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/mips/isa_traits.hh"
30#include "arch/mips/process.hh"
31#include "arch/mips/linux/process.hh"
32#include "base/loader/object_file.hh"
33#include "base/misc.hh"
34#include "cpu/exec_context.hh"
35#include "sim/builder.hh"
36#include "sim/system.hh"
37
38using namespace std;
39using namespace MipsISA;
40
41
42MipsLiveProcess *
43MipsLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
44        int stdout_fd, int stderr_fd, std::string executable,
45        std::vector<std::string> &argv, std::vector<std::string> &envp)
46{
47    MipsLiveProcess *process = NULL;
48
49    ObjectFile *objFile = createObjectFile(executable);
50    if (objFile == NULL) {
51        fatal("Can't load object file %s", executable);
52    }
53
54
55    if (objFile->getArch() != ObjectFile::Mips)
56        fatal("Object file does not match architecture.");
57    switch (objFile->getOpSys()) {
58      case ObjectFile::Linux:
59        process = new MipsLinuxProcess(nm, objFile, system,
60                                        stdin_fd, stdout_fd, stderr_fd,
61                                        argv, envp);
62        break;
63
64      default:
65        fatal("Unknown/unsupported operating system.");
66    }
67
68    if (process == NULL)
69        fatal("Unknown error creating process object.");
70    return process;
71}
72
73MipsLiveProcess::MipsLiveProcess(const std::string &nm, ObjectFile *objFile,
74        System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
75        std::vector<std::string> &argv, std::vector<std::string> &envp)
76    : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
77        argv, envp)
78{
79
80    // XXX all the below need to be updated for SPARC - Ali
81    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
82    brk_point = roundUp(brk_point, VMPageSize);
83
84    // Set up stack.  On Alpha, stack goes below text section.  This
85    // code should get moved to some architecture-specific spot.
86    stack_base = objFile->textBase() - (409600+4096);
87
88    // Set up region for mmaps.  Tru64 seems to start just above 0 and
89    // grow up from there.
90    mmap_start = mmap_end = 0x10000;
91
92    // Set pointer for next thread stack.  Reserve 8M for main stack.
93    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
94
95}
96
97void
98MipsLiveProcess::startup()
99{
100    argsInit(MachineBytes, VMPageSize);
101}
102
103
104
105
106BEGIN_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
107
108    VectorParam<string> cmd;
109    Param<string> executable;
110    Param<string> input;
111    Param<string> output;
112    VectorParam<string> env;
113    SimObjectParam<System *> system;
114
115END_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
116
117
118BEGIN_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
119
120    INIT_PARAM(cmd, "command line (executable plus arguments)"),
121    INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
122    INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
123    INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
124    INIT_PARAM(env, "environment settings"),
125    INIT_PARAM(system, "system")
126
127END_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
128
129
130CREATE_SIM_OBJECT(MipsLiveProcess)
131{
132    string in = input;
133    string out = output;
134
135    // initialize file descriptors to default: same as simulator
136    int stdin_fd, stdout_fd, stderr_fd;
137
138    if (in == "stdin" || in == "cin")
139        stdin_fd = STDIN_FILENO;
140    else
141        stdin_fd = Process::openInputFile(input);
142
143    if (out == "stdout" || out == "cout")
144        stdout_fd = STDOUT_FILENO;
145    else if (out == "stderr" || out == "cerr")
146        stdout_fd = STDERR_FILENO;
147    else
148        stdout_fd = Process::openOutputFile(out);
149
150    stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
151
152    return MipsLiveProcess::create(getInstanceName(), system,
153                               stdin_fd, stdout_fd, stderr_fd,
154                               (string)executable == "" ? cmd[0] : executable,
155                               cmd, env);
156}
157
158
159REGISTER_SIM_OBJECT("MipsLiveProcess", MipsLiveProcess)
160
161
162