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__ 192