src/arch/x86/utility.hh

   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 #ifndef __ARCH_X86_UTILITY_HH__
  59 #define __ARCH_X86_UTILITY_HH__
  60
  61 #include "arch/x86/types.hh"
  62 #include "base/hashmap.hh"
  63 #include "base/misc.hh"
  64 #include "cpu/thread_context.hh"
  65 #include "sim/host.hh"
  66
  67 class ThreadContext;
  68
  69 namespace __hash_namespace {
  70     template<>
  71     struct hash<X86ISA::ExtMachInst> {
  72         size_t operator()(const X86ISA::ExtMachInst &emi) const {
  73             return (((uint64_t)emi.legacy << 56) |
  74                     ((uint64_t)emi.rex  << 48) |
  75                     ((uint64_t)emi.modRM << 40) |
  76                     ((uint64_t)emi.sib << 32) |
  77                     ((uint64_t)emi.opcode.num << 24) |
  78                     ((uint64_t)emi.opcode.prefixA << 16) |
  79                     ((uint64_t)emi.opcode.prefixB << 8) |
  80                     ((uint64_t)emi.opcode.op)) ^
  81                     emi.immediate ^ emi.displacement ^
  82                     emi.mode ^
  83                     emi.opSize ^ emi.addrSize ^ emi.stackSize;
  84         };
  85     };
  86 }
  87
  88 namespace X86ISA
  89 {
  90     static inline bool
  91     inUserMode(ThreadContext *tc)
  92     {
  93         return false;
  94     }
  95
  96     inline bool isCallerSaveIntegerRegister(unsigned int reg) {
  97         panic("register classification not implemented");
  98         return false;
  99     }
 100
 101     inline bool isCalleeSaveIntegerRegister(unsigned int reg) {
 102         panic("register classification not implemented");
 103         return false;
 104     }
 105
 106     inline bool isCallerSaveFloatRegister(unsigned int reg) {
 107         panic("register classification not implemented");
 108         return false;
 109     }
 110
 111     inline bool isCalleeSaveFloatRegister(unsigned int reg) {
 112         panic("register classification not implemented");
 113         return false;
 114     }
 115
 116     // Instruction address compression hooks
 117     inline Addr realPCToFetchPC(const Addr &addr)
 118     {
 119         return addr;
 120     }
 121
 122     inline Addr fetchPCToRealPC(const Addr &addr)
 123     {
 124         return addr;
 125     }
 126
 127     // the size of "fetched" instructions (not necessarily the size
 128     // of real instructions for PISA)
 129     inline size_t fetchInstSize()
 130     {
 131         return sizeof(MachInst);
 132     }
 133
 134     /**
 135      * Function to insure ISA semantics about 0 registers.
 136      * @param tc The thread context.
 137      */
 138     template <class TC>
 139     void zeroRegisters(TC *tc);
 140
 141     inline void initCPU(ThreadContext *tc, int cpuId)
 142     {
 143         panic("initCPU not implemented!\n");
 144     }
 145
 146     inline void startupCPU(ThreadContext *tc, int cpuId)
 147     {
 148         tc->activate(0);
 149     }
 150 };
 151
 152 #endif // __ARCH_X86_UTILITY_HH__