src/arch/arm/isa/bitfields.isa

   1 // -*- mode:c++ -*-
   2
   3 // Copyright (c) 2007-2008 The Florida State University
   4 // All rights reserved.
   5 //
   6 // Redistribution and use in source and binary forms, with or without
   7 // modification, are permitted provided that the following conditions are
   8 // met: redistributions of source code must retain the above copyright
   9 // notice, this list of conditions and the following disclaimer;
  10 // redistributions in binary form must reproduce the above copyright
  11 // notice, this list of conditions and the following disclaimer in the
  12 // documentation and/or other materials provided with the distribution;
  13 // neither the name of the copyright holders nor the names of its
  14 // contributors may be used to endorse or promote products derived from
  15 // this software without specific prior written permission.
  16 //
  17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 //
  29 // Authors: Stephen Hines
  30
  31 ////////////////////////////////////////////////////////////////////
  32 //
  33 // Bitfield definitions.
  34 //
  35
  36 // Opcode fields
  37 def bitfield ENCODING      encoding;
  38 def bitfield OPCODE        opcode;
  39 def bitfield MEDIA_OPCODE  mediaOpcode;
  40 def bitfield MEDIA_OPCODE2 mediaOpcode2;
  41 def bitfield OPCODE_24     opcode24;
  42 def bitfield OPCODE_23_20  opcode23_20;
  43 def bitfield OPCODE_23_21  opcode23_21;
  44 def bitfield OPCODE_22     opcode22;
  45 def bitfield OPCODE_19     opcode19;
  46 def bitfield OPCODE_15_12  opcode15_12;
  47 def bitfield OPCODE_15     opcode15;
  48 def bitfield MISC_OPCODE   miscOpcode;
  49 def bitfield OPCODE_7      opcode7;
  50 def bitfield OPCODE_4      opcode4;
  51
  52 def bitfield IS_MISC       isMisc;
  53 def bitfield SEVEN_AND_FOUR sevenAndFour;
  54
  55 // Other
  56 def bitfield COND_CODE     condCode;
  57 def bitfield S_FIELD       sField;
  58 def bitfield RN            rn;
  59 def bitfield RD            rd;
  60 def bitfield SHIFT_SIZE    shiftSize;
  61 def bitfield SHIFT         shift;
  62 def bitfield RM            rm;
  63
  64 def bitfield RS            rs;
  65
  66 def bitfield PUSWL         puswl;
  67 def bitfield PREPOST       puswl.prepost;
  68 def bitfield UP               puswl.up;
  69 def bitfield PSRUSER       puswl.psruser;
  70 def bitfield WRITEBACK     puswl.writeback;
  71 def bitfield LOADOP        puswl.loadOp;
  72
  73 def bitfield PUBWL         pubwl;
  74
  75 def bitfield IMM           imm;
  76
  77 def bitfield IMMED_11_0    immed11_0;
  78
  79 def bitfield IMMED_HI_11_8 immedHi11_8;
  80 def bitfield IMMED_LO_3_0  immedLo3_0;
  81
  82 def bitfield IMMED_23_0    immed23_0;
  83
  84 def bitfield CPNUM         cpNum;
  85 // Note that FP Regs are only 3 bits
  86 def bitfield FN            fn;
  87 def bitfield FD            fd;
  88 def bitfield FPREGIMM      fpRegImm;
  89 // We can just use 3:0 for FM since the hard-wired FP regs are handled in
  90 // float_regfile.hh
  91 def bitfield FM            fm;
  92 def bitfield FPIMM         fpImm;
  93 def bitfield PUNWL         punwl;
  94
  95 // M5 instructions
  96 def bitfield M5FUNC        m5Func;
  97