process.cc revision 2561 
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/alpha/constants.hh"
30#include "arch/alpha/process.hh"
31#include "arch/alpha/linux/process.hh"
32#include "arch/alpha/tru64/process.hh"
33#include "base/loader/object_file.hh"
34#include "base/misc.hh"
35#include "cpu/exec_context.hh"
36#include "sim/builder.hh"
37#include "sim/system.hh"
38
39
40using namespace AlphaISA;
41using namespace std;
42
43AlphaLiveProcess *
44AlphaLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
45        int stdout_fd, int stderr_fd, std::string executable,
46        std::vector<std::string> &argv, std::vector<std::string> &envp)
47{
48    AlphaLiveProcess *process = NULL;
49
50    ObjectFile *objFile = createObjectFile(executable);
51    if (objFile == NULL) {
52        fatal("Can't load object file %s", executable);
53    }
54
55
56    if (objFile->getArch() != ObjectFile::Alpha)
57        fatal("Object file does not match architecture.");
58    switch (objFile->getOpSys()) {
59      case ObjectFile::Tru64:
60        process = new AlphaTru64Process(nm, objFile, system,
61                                        stdin_fd, stdout_fd, stderr_fd,
62                                        argv, envp);
63        break;
64
65      case ObjectFile::Linux:
66        process = new AlphaLinuxProcess(nm, objFile, system,
67                                        stdin_fd, stdout_fd, stderr_fd,
68                                        argv, envp);
69        break;
70
71      default:
72        fatal("Unknown/unsupported operating system.");
73    }
74
75    if (process == NULL)
76        fatal("Unknown error creating process object.");
77    return process;
78}
79
80AlphaLiveProcess::AlphaLiveProcess(const std::string &nm, ObjectFile *objFile,
81        System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
82        std::vector<std::string> &argv, std::vector<std::string> &envp)
83    : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
84        argv, envp)
85{
86    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
87    brk_point = roundUp(brk_point, VMPageSize);
88
89    // Set up stack.  On Alpha, stack goes below text section.  This
90    // code should get moved to some architecture-specific spot.
91    stack_base = objFile->textBase() - (409600+4096);
92
93    // Set up region for mmaps.  Tru64 seems to start just above 0 and
94    // grow up from there.
95    mmap_start = mmap_end = 0x10000;
96
97    // Set pointer for next thread stack.  Reserve 8M for main stack.
98    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
99
100}
101
102void
103AlphaLiveProcess::startup()
104{
105    argsInit(MachineBytes, VMPageSize);
106
107    execContexts[0]->setIntReg(GlobalPointerReg, objFile->globalPointer());
108}
109
110
111
112
113BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaLiveProcess)
114
115    VectorParam<string> cmd;
116    Param<string> executable;
117    Param<string> input;
118    Param<string> output;
119    VectorParam<string> env;
120    SimObjectParam<System *> system;
121
122END_DECLARE_SIM_OBJECT_PARAMS(AlphaLiveProcess)
123
124
125BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaLiveProcess)
126
127    INIT_PARAM(cmd, "command line (executable plus arguments)"),
128    INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
129    INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
130    INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
131    INIT_PARAM(env, "environment settings"),
132    INIT_PARAM(system, "system")
133
134END_INIT_SIM_OBJECT_PARAMS(AlphaLiveProcess)
135
136
137CREATE_SIM_OBJECT(AlphaLiveProcess)
138{
139    string in = input;
140    string out = output;
141
142    // initialize file descriptors to default: same as simulator
143    int stdin_fd, stdout_fd, stderr_fd;
144
145    if (in == "stdin" || in == "cin")
146        stdin_fd = STDIN_FILENO;
147    else
148        stdin_fd = Process::openInputFile(input);
149
150    if (out == "stdout" || out == "cout")
151        stdout_fd = STDOUT_FILENO;
152    else if (out == "stderr" || out == "cerr")
153        stdout_fd = STDERR_FILENO;
154    else
155        stdout_fd = Process::openOutputFile(out);
156
157    stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
158
159    return AlphaLiveProcess::create(getInstanceName(), system,
160                               stdin_fd, stdout_fd, stderr_fd,
161                               (string)executable == "" ? cmd[0] : executable,
162                               cmd, env);
163}
164
165
166REGISTER_SIM_OBJECT("AlphaLiveProcess", AlphaLiveProcess)
167
168