src/arch/x86/insts/static_inst.cc

   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
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  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
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  36  * Non-Commercial Uses.  Derivatives of the software may be shared with
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  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 #include "arch/x86/insts/static_inst.hh"
  59
  60 namespace X86ISA
  61 {
  62     void X86StaticInst::printMnemonic(std::ostream &os,
  63             const char * mnemonic) const
  64     {
  65         ccprintf(os, "\t%s   ", mnemonic);
  66     }
  67
  68     void X86StaticInst::printMnemonic(std::ostream &os,
  69             const char * instMnemonic, const char * mnemonic) const
  70     {
  71         ccprintf(os, "\t%s : %s   ", instMnemonic, mnemonic);
  72     }
  73
  74     void X86StaticInst::printSegment(std::ostream &os, int segment) const
  75     {
  76         switch (segment)
  77         {
  78           case 0:
  79             ccprintf(os, "ES");
  80             break;
  81           case 1:
  82             ccprintf(os, "CS");
  83             break;
  84           case 2:
  85             ccprintf(os, "SS");
  86             break;
  87           case 3:
  88             ccprintf(os, "DS");
  89             break;
  90           case 4:
  91             ccprintf(os, "FS");
  92             break;
  93           case 5:
  94             ccprintf(os, "GS");
  95             break;
  96           default:
  97             panic("Unrecognized segment %d\n", segment);
  98         }
  99     }
 100
 101     void
 102     X86StaticInst::printSrcReg(std::ostream &os, int reg, int size) const
 103     {
 104         if(_numSrcRegs > reg)
 105             printReg(os, _srcRegIdx[reg], size);
 106     }
 107
 108     void
 109     X86StaticInst::printDestReg(std::ostream &os, int reg, int size) const
 110     {
 111         if(_numDestRegs > reg)
 112             printReg(os, _destRegIdx[reg], size);
 113     }
 114
 115     void
 116     X86StaticInst::printReg(std::ostream &os, int reg, int size) const
 117     {
 118         assert(size == 1 || size == 2 || size == 4 || size == 8);
 119         static const char * abcdFormats[9] =
 120             {"", "%sl",  "%sx",  "", "e%sx", "", "", "", "r%sx"};
 121         static const char * piFormats[9] =
 122             {"", "%sl",  "%s",   "", "e%s",  "", "", "", "r%s"};
 123         static const char * longFormats[9] =
 124             {"", "r%sb", "r%sw", "", "r%sd", "", "", "", "r%s"};
 125         static const char * microFormats[9] =
 126             {"", "t%db", "t%dw", "", "t%dd", "", "", "", "t%d"};
 127
 128         if (reg < FP_Base_DepTag) {
 129             switch (reg) {
 130               case INTREG_RAX:
 131                 ccprintf(os, abcdFormats[size], "a");
 132                 break;
 133               case INTREG_RBX:
 134                 ccprintf(os, abcdFormats[size], "b");
 135                 break;
 136               case INTREG_RCX:
 137                 ccprintf(os, abcdFormats[size], "c");
 138                 break;
 139               case INTREG_RDX:
 140                 ccprintf(os, abcdFormats[size], "d");
 141                 break;
 142               case INTREG_RSP:
 143                 ccprintf(os, piFormats[size], "sp");
 144                 break;
 145               case INTREG_RBP:
 146                 ccprintf(os, piFormats[size], "bp");
 147                 break;
 148               case INTREG_RSI:
 149                 ccprintf(os, piFormats[size], "si");
 150                 break;
 151               case INTREG_RDI:
 152                 ccprintf(os, piFormats[size], "di");
 153                 break;
 154               case INTREG_R8W:
 155                 ccprintf(os, longFormats[size], "8");
 156                 break;
 157               case INTREG_R9W:
 158                 ccprintf(os, longFormats[size], "9");
 159                 break;
 160               case INTREG_R10W:
 161                 ccprintf(os, longFormats[size], "10");
 162                 break;
 163               case INTREG_R11W:
 164                 ccprintf(os, longFormats[size], "11");
 165                 break;
 166               case INTREG_R12W:
 167                 ccprintf(os, longFormats[size], "12");
 168                 break;
 169               case INTREG_R13W:
 170                 ccprintf(os, longFormats[size], "13");
 171                 break;
 172               case INTREG_R14W:
 173                 ccprintf(os, longFormats[size], "14");
 174                 break;
 175               case INTREG_R15W:
 176                 ccprintf(os, longFormats[size], "15");
 177                 break;
 178               default:
 179                 ccprintf(os, microFormats[size], reg - NUM_INTREGS);
 180             }
 181         } else if (reg < Ctrl_Base_DepTag) {
 182             ccprintf(os, "%%f%d", reg - FP_Base_DepTag);
 183         } else {
 184             switch (reg - Ctrl_Base_DepTag) {
 185               default:
 186                 ccprintf(os, "%%ctrl%d", reg - Ctrl_Base_DepTag);
 187             }
 188         }
 189     }
 190
 191     std::string X86StaticInst::generateDisassembly(Addr pc,
 192         const SymbolTable *symtab) const
 193     {
 194         std::stringstream ss;
 195
 196         printMnemonic(ss, mnemonic);
 197
 198         return ss.str();
 199     }
 200 }