1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Gabe Black
38 */
39
40#ifndef __ARCH_X86_PROCESS_HH__
41#define __ARCH_X86_PROCESS_HH__
42
43#include <string>
44#include <vector>
45
46#include "arch/x86/pagetable.hh"
47#include "mem/multi_level_page_table.hh"
48#include "sim/aux_vector.hh"
49#include "sim/process.hh"
50
51class SyscallDesc;
52
53namespace X86ISA
54{
55 enum X86AuxiliaryVectorTypes {
56 M5_AT_SYSINFO = 32,
57 M5_AT_SYSINFO_EHDR = 33
58 };
59
60 class X86Process : public Process
61 {
62 protected:
63 Addr _gdtStart;
64 Addr _gdtSize;
65
66 SyscallDesc *syscallDescs;
67 const int numSyscallDescs;
68
69 X86Process(ProcessParams * params, ObjectFile *objFile,
70 SyscallDesc *_syscallDescs, int _numSyscallDescs);
71
72 template<class IntType>
73 void argsInit(int pageSize,
74 std::vector<AuxVector<IntType> > extraAuxvs);
75
76 public:
77 Addr gdtStart()
78 { return _gdtStart; }
79
80 Addr gdtSize()
81 { return _gdtSize; }
82
83 SyscallDesc* getDesc(int callnum) override;
84
85 void setSyscallReturn(ThreadContext *tc,
86 SyscallReturn return_value) override;
87 void clone(ThreadContext *old_tc, ThreadContext *new_tc,
88 Process *process, RegVal flags) override;
89
90 X86Process &
91 operator=(const X86Process &in)
92 {
93 if (this == &in)
94 return *this;
95
96 _gdtStart = in._gdtStart;
97 _gdtSize = in._gdtSize;
98 syscallDescs = in.syscallDescs;
99
100 return *this;
101 }
102 };
103
104 class X86_64Process : public X86Process
105 {
106 protected:
107 X86_64Process(ProcessParams *params, ObjectFile *objFile,
108 SyscallDesc *_syscallDescs, int _numSyscallDescs);
109
110 class VSyscallPage
111 {
112 public:
113 Addr base;
114 Addr size;
115 Addr vtimeOffset;
116 Addr vgettimeofdayOffset;
117
118 VSyscallPage &
119 operator=(const VSyscallPage &in)
120 {
121 if (this == &in)
122 return *this;
123
124 base = in.base;
125 size = in.size;
126 vtimeOffset = in.vtimeOffset;
127 vgettimeofdayOffset = in.vgettimeofdayOffset;
128
129 return *this;
130 }
131 };
132 VSyscallPage vsyscallPage;
133
134 public:
135 void argsInit(int pageSize);
136 void initState() override;
137
138 RegVal getSyscallArg(ThreadContext *tc, int &i) override;
139 /// Explicitly import the otherwise hidden getSyscallArg
140 using Process::getSyscallArg;
141 void setSyscallArg(ThreadContext *tc, int i, RegVal val) override;
142 void clone(ThreadContext *old_tc, ThreadContext *new_tc,
143 Process *process, RegVal flags) override;
144 };
145
146 class I386Process : public X86Process
147 {
148 protected:
149 I386Process(ProcessParams *params, ObjectFile *objFile,
150 SyscallDesc *_syscallDescs, int _numSyscallDescs);
151
152 class VSyscallPage
153 {
154 public:
155 Addr base;
156 Addr size;
157 Addr vsyscallOffset;
158 Addr vsysexitOffset;
159
160 VSyscallPage &
161 operator=(const VSyscallPage &in)
162 {
163 if (this == &in)
164 return *this;
165
166 base = in.base;
167 size = in.size;
168 vsyscallOffset = in.vsyscallOffset;
169 vsysexitOffset = in.vsysexitOffset;
170
171 return *this;
172 }
173 };
174 VSyscallPage vsyscallPage;
175
176 public:
177 void argsInit(int pageSize);
178 void initState() override;
179
180 void syscall(int64_t callnum, ThreadContext *tc,
181 Fault *fault) override;
182 RegVal getSyscallArg(ThreadContext *tc, int &i) override;
183 RegVal getSyscallArg(ThreadContext *tc, int &i, int width) override;
184 void setSyscallArg(ThreadContext *tc, int i, RegVal val) override;
185 void clone(ThreadContext *old_tc, ThreadContext *new_tc,
186 Process *process, RegVal flags) override;
187 };
188
189}
190
191#endif // __ARCH_X86_PROCESS_HH__