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/alpha/constants.hh"
33#include "arch/alpha/process.hh"
34#include "arch/alpha/linux/process.hh"
35#include "arch/alpha/tru64/process.hh"
36#include "base/loader/object_file.hh"
37#include "base/misc.hh"
38#include "cpu/exec_context.hh"
39#include "sim/builder.hh"
40#include "sim/system.hh"
41
42
43using namespace AlphaISA;
44using namespace std;
45
46AlphaLiveProcess *
47AlphaLiveProcess::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    AlphaLiveProcess *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::Alpha)
60        fatal("Object file does not match architecture.");
61    switch (objFile->getOpSys()) {
62      case ObjectFile::Tru64:
63        process = new AlphaTru64Process(nm, objFile, system,
64                                        stdin_fd, stdout_fd, stderr_fd,
65                                        argv, envp);
66        break;
67
68      case ObjectFile::Linux:
69        process = new AlphaLinuxProcess(nm, objFile, system,
70                                        stdin_fd, stdout_fd, stderr_fd,
71                                        argv, envp);
72        break;
73
74      default:
75        fatal("Unknown/unsupported operating system.");
76    }
77
78    if (process == NULL)
79        fatal("Unknown error creating process object.");
80    return process;
81}
82
83AlphaLiveProcess::AlphaLiveProcess(const std::string &nm, ObjectFile *objFile,
84        System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
85        std::vector<std::string> &argv, std::vector<std::string> &envp)
86    : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
87        argv, envp)
88{
89    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
90    brk_point = roundUp(brk_point, VMPageSize);
91
92    // Set up stack.  On Alpha, stack goes below text section.  This
93    // code should get moved to some architecture-specific spot.
94    stack_base = objFile->textBase() - (409600+4096);
95
96    // Set up region for mmaps.  Tru64 seems to start just above 0 and
97    // grow up from there.
98    mmap_start = mmap_end = 0x10000;
99
100    // Set pointer for next thread stack.  Reserve 8M for main stack.
101    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
102
103}
104
105void
106AlphaLiveProcess::startup()
107{
108    argsInit(MachineBytes, VMPageSize);
109
110    execContexts[0]->setIntReg(GlobalPointerReg, objFile->globalPointer());
111}
112
113
114
115
116BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaLiveProcess)
117
118    VectorParam<string> cmd;
119    Param<string> executable;
120    Param<string> input;
121    Param<string> output;
122    VectorParam<string> env;
123    SimObjectParam<System *> system;
124
125END_DECLARE_SIM_OBJECT_PARAMS(AlphaLiveProcess)
126
127
128BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaLiveProcess)
129
130    INIT_PARAM(cmd, "command line (executable plus arguments)"),
131    INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
132    INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
133    INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
134    INIT_PARAM(env, "environment settings"),
135    INIT_PARAM(system, "system")
136
137END_INIT_SIM_OBJECT_PARAMS(AlphaLiveProcess)
138
139
140CREATE_SIM_OBJECT(AlphaLiveProcess)
141{
142    string in = input;
143    string out = output;
144
145    // initialize file descriptors to default: same as simulator
146    int stdin_fd, stdout_fd, stderr_fd;
147
148    if (in == "stdin" || in == "cin")
149        stdin_fd = STDIN_FILENO;
150    else
151        stdin_fd = Process::openInputFile(input);
152
153    if (out == "stdout" || out == "cout")
154        stdout_fd = STDOUT_FILENO;
155    else if (out == "stderr" || out == "cerr")
156        stdout_fd = STDERR_FILENO;
157    else
158        stdout_fd = Process::openOutputFile(out);
159
160    stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
161
162    return AlphaLiveProcess::create(getInstanceName(), system,
163                               stdin_fd, stdout_fd, stderr_fd,
164                               (string)executable == "" ? cmd[0] : executable,
165                               cmd, env);
166}
167
168
169REGISTER_SIM_OBJECT("AlphaLiveProcess", AlphaLiveProcess)
170
171