process.cc revision 11851 
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/linux/process.hh"
34
35#include "arch/sparc/isa_traits.hh"
36#include "arch/sparc/registers.hh"
37#include "base/trace.hh"
38#include "cpu/thread_context.hh"
39#include "kern/linux/linux.hh"
40#include "sim/process.hh"
41#include "sim/syscall_desc.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
63Sparc32LinuxProcess::Sparc32LinuxProcess(ProcessParams * params,
64                                         ObjectFile *objFile)
65    : Sparc32Process(params, objFile)
66{}
67
68void Sparc32LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
69{
70    switch (trapNum) {
71      case 0x10: //Linux 32 bit syscall trap
72        tc->syscall(tc->readIntReg(1));
73        break;
74      default:
75        SparcProcess::handleTrap(trapNum, tc);
76    }
77}
78
79Sparc64LinuxProcess::Sparc64LinuxProcess(ProcessParams * params,
80                                         ObjectFile *objFile)
81    : Sparc64Process(params, objFile)
82{}
83
84void Sparc64LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
85{
86    switch (trapNum) {
87      // case 0x10: // Linux 32 bit syscall trap
88      case 0x6d: // Linux 64 bit syscall trap
89        tc->syscall(tc->readIntReg(1));
90        break;
91      default:
92        SparcProcess::handleTrap(trapNum, tc);
93    }
94}
95