process.cc revision 4188 
1/*
2 * Copyright (c) 2003-2005 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: Steve Reinhardt
29 *          Gabe Black
30 *          Ali Saidi
31 */
32
33#include "arch/sparc/isa_traits.hh"
34#include "arch/sparc/linux/process.hh"
35#include "arch/sparc/regfile.hh"
36
37#include "base/trace.hh"
38#include "cpu/thread_context.hh"
39#include "kern/linux/linux.hh"
40
41#include "sim/process.hh"
42#include "sim/syscall_emul.hh"
43
44using namespace std;
45using namespace SparcISA;
46
47SyscallDesc*
48SparcLinuxProcess::getDesc(int callnum)
49{
50    if (callnum < 0 || callnum > Num_Syscall_Descs)
51        return NULL;
52    return &syscallDescs[callnum];
53}
54
55SyscallDesc*
56SparcLinuxProcess::getDesc32(int callnum)
57{
58    if (callnum < 0 || callnum > Num_Syscall32_Descs)
59        return NULL;
60    return &syscall32Descs[callnum];
61}
62
63SparcLinuxProcess::SparcLinuxProcess() :
64    Num_Syscall_Descs(284), //sizeof(syscallDescs) / sizeof(SyscallDesc)),
65    Num_Syscall32_Descs(299) //sizeof(syscall32Descs) / sizeof(SyscallDesc))
66{
67    // The sparc syscall table must be <= 284 entries because that is all there
68    // is space for.
69    assert(Num_Syscall_Descs <= 284);
70    // The sparc 32 bit syscall table bust be <= 299 entries because that is
71    // all there is space for.
72    assert(Num_Syscall_Descs <= 299);
73}
74
75Sparc32LinuxProcess::Sparc32LinuxProcess(const std::string &name,
76                                         ObjectFile *objFile,
77                                         System * system,
78                                         int stdin_fd,
79                                         int stdout_fd,
80                                         int stderr_fd,
81                                         std::vector<std::string> &argv,
82                                         std::vector<std::string> &envp,
83                                         const std::string &cwd,
84                                         uint64_t _uid, uint64_t _euid,
85                                         uint64_t _gid, uint64_t _egid,
86                                         uint64_t _pid, uint64_t _ppid)
87    : Sparc32LiveProcess(name, objFile, system,
88            stdin_fd, stdout_fd, stderr_fd, argv, envp, cwd,
89            _uid, _euid, _gid, _egid, _pid, _ppid)
90{}
91
92void Sparc32LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
93{
94    switch(trapNum)
95    {
96      case 0x10: //Linux 32 bit syscall trap
97        tc->syscall(tc->readIntReg(1));
98        break;
99      default:
100        SparcLiveProcess::handleTrap(trapNum, tc);
101    }
102}
103
104Sparc64LinuxProcess::Sparc64LinuxProcess(const std::string &name,
105                                         ObjectFile *objFile,
106                                         System * system,
107                                         int stdin_fd,
108                                         int stdout_fd,
109                                         int stderr_fd,
110                                         std::vector<std::string> &argv,
111                                         std::vector<std::string> &envp,
112                                         const std::string &cwd,
113                                         uint64_t _uid, uint64_t _euid,
114                                         uint64_t _gid, uint64_t _egid,
115                                         uint64_t _pid, uint64_t _ppid)
116    : Sparc64LiveProcess(name, objFile, system,
117            stdin_fd, stdout_fd, stderr_fd, argv, envp, cwd,
118            _uid, _euid, _gid, _egid, _pid, _ppid)
119{}
120
121void Sparc64LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
122{
123    switch(trapNum)
124    {
125      //case 0x10: //Linux 32 bit syscall trap
126      case 0x6d: //Linux 64 bit syscall trap
127        tc->syscall(tc->readIntReg(1));
128        break;
129      default:
130        SparcLiveProcess::handleTrap(trapNum, tc);
131    }
132}
133