process.cc revision 4166:ecebe3ac19b4 
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use.  Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
17 *
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 *     Director of Intellectual Property Licensing
21 *     Office of Strategy and Technology
22 *     Hewlett-Packard Company
23 *     1501 Page Mill Road
24 *     Palo Alto, California  94304
25 *
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer.  Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution.  Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission.  No right of
34 * sublicense is granted herewith.  Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses.  Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 *
55 * Authors: Gabe Black
56 */
57
58#include "arch/x86/isa_traits.hh"
59#include "arch/x86/linux/process.hh"
60#include "arch/x86/regfile.hh"
61
62#include "base/trace.hh"
63#include "cpu/thread_context.hh"
64#include "kern/linux/linux.hh"
65
66#include "sim/process.hh"
67#include "sim/syscall_emul.hh"
68
69using namespace std;
70using namespace X86ISA;
71
72SyscallDesc*
73X86LinuxProcess::getDesc(int callnum)
74{
75    if (callnum < 0 || callnum > Num_Syscall_Descs)
76        return NULL;
77    return &syscallDescs[callnum];
78}
79
80X86LinuxProcess::X86LinuxProcess(const std::string &name,
81                                       ObjectFile *objFile,
82                                       System * system,
83                                       int stdin_fd,
84                                       int stdout_fd,
85                                       int stderr_fd,
86                                       std::vector<std::string> &argv,
87                                       std::vector<std::string> &envp,
88                                       const std::string &cwd,
89                                       uint64_t _uid, uint64_t _euid,
90                                       uint64_t _gid, uint64_t _egid,
91                                       uint64_t _pid, uint64_t _ppid)
92    : X86LiveProcess(name, objFile, system,
93            stdin_fd, stdout_fd, stderr_fd, argv, envp, cwd,
94            _uid, _euid, _gid, _egid, _pid, _ppid),
95    Num_Syscall_Descs(273)
96{}
97
98void X86LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
99{
100    switch(trapNum)
101    {
102      //This implementation is from SPARC
103      case 0x10: //Linux 32 bit syscall trap
104        tc->syscall(tc->readIntReg(1));
105        break;
106      default:
107        X86LiveProcess::handleTrap(trapNum, tc);
108    }
109}
110