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 "mem/multi_level_page_table.hh"
47#include "sim/aux_vector.hh"
48#include "sim/process.hh"
49
50class SyscallDesc;
51
52namespace X86ISA
53{
54 enum X86AuxiliaryVectorTypes {
55 M5_AT_SYSINFO = 32,
56 M5_AT_SYSINFO_EHDR = 33
57 };
58
59 class X86Process : public Process
60 {
61 protected:
62 Addr _gdtStart;
63 Addr _gdtSize;
64
65 SyscallDesc *syscallDescs;
66 const int numSyscallDescs;
67
68 X86Process(ProcessParams * params, ObjectFile *objFile,
69 SyscallDesc *_syscallDescs, int _numSyscallDescs);
70
71 template<class IntType>
72 void argsInit(int pageSize,
73 std::vector<AuxVector<IntType> > extraAuxvs);
74
75 public:
76 Addr gdtStart()
77 { return _gdtStart; }
78
79 Addr gdtSize()
80 { return _gdtSize; }
81
82 SyscallDesc* getDesc(int callnum) override;
83
84 void setSyscallReturn(ThreadContext *tc,
85 SyscallReturn return_value) override;
86 void clone(ThreadContext *old_tc, ThreadContext *new_tc,
87 Process *process, TheISA::IntReg flags);
88
89 X86Process &
90 operator=(const X86Process &in)
91 {
92 if (this == &in)
93 return *this;
94
95 _gdtStart = in._gdtStart;
96 _gdtSize = in._gdtSize;
97 syscallDescs = in.syscallDescs;
98
99 return *this;
100 }
101 };
102
103 class X86_64Process : public X86Process
104 {
105 protected:
106 X86_64Process(ProcessParams *params, ObjectFile *objFile,
107 SyscallDesc *_syscallDescs, int _numSyscallDescs);
108
109 class VSyscallPage
110 {
111 public:
112 Addr base;
113 Addr size;
114 Addr vtimeOffset;
115 Addr vgettimeofdayOffset;
116
117 VSyscallPage &
118 operator=(const VSyscallPage &in)
119 {
120 if (this == &in)
121 return *this;
122
123 base = in.base;
124 size = in.size;
125 vtimeOffset = in.vtimeOffset;
126 vgettimeofdayOffset = in.vgettimeofdayOffset;
127
128 return *this;
129 }
130 };
131 VSyscallPage vsyscallPage;
132
133 public:
134 void argsInit(int pageSize);
135 void initState() override;
136
137 X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i) override;
138 /// Explicitly import the otherwise hidden getSyscallArg
139 using Process::getSyscallArg;
140 void setSyscallArg(ThreadContext *tc, int i,
141 X86ISA::IntReg val) override;
142 void clone(ThreadContext *old_tc, ThreadContext *new_tc,
143 Process *process, TheISA::IntReg flags);
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 X86ISA::IntReg getSyscallArg(ThreadContext *tc,
183 int &i) override;
184 X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i,
185 int width) override;
186 void setSyscallArg(ThreadContext *tc, int i,
187 X86ISA::IntReg val) override;
188 void clone(ThreadContext *old_tc, ThreadContext *new_tc,
189 Process *process, TheISA::IntReg flags);
190 };
191
192 /**
193 * Declaration of architectural page table for x86.
194 *
195 * These page tables are stored in system memory and respect x86
196 * specification.
197 */
198 typedef MultiLevelPageTable<PageTableOps> ArchPageTable;
199
200}
201
202#endif // __ARCH_X86_PROCESS_HH__