src/arch/x86/isa/microasm.isa

   1 // -*- mode:c++ -*-
   2
   3 // Copyright (c) 2007 The Hewlett-Packard Development Company
   4 // All rights reserved.
   5 //
   6 // Redistribution and use of this software in source and binary forms,
   7 // with or without modification, are permitted provided that the
   8 // following conditions are met:
   9 //
  10 // The software must be used only for Non-Commercial Use which means any
  11 // use which is NOT directed to receiving any direct monetary
  12 // compensation for, or commercial advantage from such use.  Illustrative
  13 // examples of non-commercial use are academic research, personal study,
  14 // teaching, education and corporate research & development.
  15 // Illustrative examples of commercial use are distributing products for
  16 // commercial advantage and providing services using the software for
  17 // commercial advantage.
  18 //
  19 // If you wish to use this software or functionality therein that may be
  20 // covered by patents for commercial use, please contact:
  21 //     Director of Intellectual Property Licensing
  22 //     Office of Strategy and Technology
  23 //     Hewlett-Packard Company
  24 //     1501 Page Mill Road
  25 //     Palo Alto, California  94304
  26 //
  27 // Redistributions of source code must retain the above copyright notice,
  28 // this list of conditions and the following disclaimer.  Redistributions
  29 // in binary form must reproduce the above copyright notice, this list of
  30 // conditions and the following disclaimer in the documentation and/or
  31 // other materials provided with the distribution.  Neither the name of
  32 // the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
  33 // contributors may be used to endorse or promote products derived from
  34 // this software without specific prior written permission.  No right of
  35 // sublicense is granted herewith.  Derivatives of the software and
  36 // output created using the software may be prepared, but only for
  37 // Non-Commercial Uses.  Derivatives of the software may be shared with
  38 // others provided: (i) the others agree to abide by the list of
  39 // conditions herein which includes the Non-Commercial Use restrictions;
  40 // and (ii) such Derivatives of the software include the above copyright
  41 // notice to acknowledge the contribution from this software where
  42 // applicable, this list of conditions and the disclaimer below.
  43 //
  44 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  45 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  46 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  47 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  48 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  49 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  50 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  51 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  52 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  53 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  54 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  55 //
  56 // Authors: Gabe Black
  57
  58 //Include the definitions of the micro ops.
  59 //These are StaticInst classes which stand on their own and make up an
  60 //internal instruction set, and also python representations which are passed
  61 //into the microcode assembler.
  62 ##include "microops/microops.isa"
  63
  64 //Include code to build macroops in both C++ and python.
  65 ##include "macroop.isa"
  66
  67 let {{
  68     import sys
  69     sys.path[0:0] = ["src/arch/x86/isa/"]
  70     from insts import microcode
  71     # print microcode
  72     from micro_asm import MicroAssembler, Rom_Macroop, Rom
  73     mainRom = Rom('main ROM')
  74     assembler = MicroAssembler(X86Macroop, microopClasses, mainRom, Rom_Macroop)
  75     # Add in symbols for the microcode registers
  76     for num in range(15):
  77         assembler.symbols["t%d" % num] = "NUM_INTREGS+%d" % num
  78     # Add in symbols for the segment descriptor registers
  79     for letter in ("C", "D", "E", "F", "G", "S"):
  80         assembler.symbols["%ss" % letter.lower()] = "SEGMENT_REG_%sS" % letter
  81     # Miscellaneous symbols
  82     symbols = {
  83         "reg" : "env.reg",
  84         "regm" : "env.regm",
  85         "imm" : "IMMEDIATE",
  86         "disp" : "DISPLACEMENT",
  87         "scale" : "env.scale",
  88         "index" : "env.index",
  89         "base" : "env.base",
  90         "dsz" : "env.dataSize",
  91         "osz" : "env.operandSize",
  92         "ssz" : "env.stackSize"
  93     }
  94     assembler.symbols.update(symbols)
  95
  96     # Code literal which forces a default 64 bit operand size in 64 bit mode.
  97     assembler.symbols["oszIn64Override"] = '''
  98     if (machInst.mode.submode == SixtyFourBitMode &&
  99             env.dataSize == 4)
 100         env.dataSize = 8;
 101     '''
 102
 103     macroopDict = assembler.assemble(microcode)
 104 }};