ed99a79ca7
This introduces the extended opcode fields for MD and MDS form instructions and the mb and me fields which are concatenated with the MB and ME fields respectively for specifying mask bounds for doubleword operands. Change-Id: I2c3366794ed42f5d31ba1d69e360c0ac67c74e06 Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/40932 Reviewed-by: Boris Shingarov <shingarov@labware.com> Maintainer: Boris Shingarov <shingarov@labware.com> Tested-by: kokoro <noreply+kokoro@google.com>
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
// -*- mode:c++ -*-
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// Copyright (c) 2009 The University of Edinburgh
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met: redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer;
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// redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution;
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// neither the name of the copyright holders nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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////////////////////////////////////////////////////////////////////
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//
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// Bitfield definitions.
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//
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// The endianness is the opposite to what's used here, so things
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// are reversed sometimes. Not sure of a fix to this though...
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// Opcode fields
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def bitfield PO <31:26>;
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def bitfield A_XO <5:1>;
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def bitfield DS_XO <1:0>;
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def bitfield DX_XO <5:1>;
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def bitfield MD_XO <4:2>;
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def bitfield MDS_XO <4:1>;
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def bitfield VA_XO <5:0>;
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def bitfield X_XO <10:1>;
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def bitfield XFL_XO <10:1>;
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def bitfield XFX_XO <10:1>;
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def bitfield XL_XO <10:1>;
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def bitfield XO_XO <9:1>;
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def bitfield XS_XO <10:2>;
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// Register fields
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def bitfield RA <20:16>;
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def bitfield RB <15:11>;
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def bitfield RC <10:6>;
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def bitfield RS <25:21>;
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def bitfield RT <25:21>;
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def bitfield FRA <20:16>;
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def bitfield FRB <15:11>;
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def bitfield FRC <10:6>;
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def bitfield FRS <25:21>;
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def bitfield FRT <25:21>;
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// The record bit can be in two positions
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// Used to enable setting of the condition register
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def bitfield RC31 <0>;
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def bitfield RC21 <10>;
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// Used to enable setting of the overflow flags
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def bitfield OE <10>;
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// SPR field for mtspr instruction
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def bitfield SPR <20:11>;
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// FXM field for mtcrf instruction
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def bitfield FXM <19:12>;
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// Branch fields
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def bitfield BO <25:21>;
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def bitfield LK <0>;
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def bitfield AA <1>;
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// Specifies a CR or FPSCR field
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def bitfield BF <25:23>;
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// Fields for FPSCR manipulation instructions
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def bitfield FLM <24:17>;
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// Named so to avoid conflicts with potential template typenames
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def bitfield L_FIELD <25>;
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// Named so to avoid conflicts with range_map.hh
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def bitfield W_FIELD <16>;
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// Named so to avoid conflicts with range.hh
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def bitfield U_FIELD <15:12>;
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// Field for specifying a bit in CR or FPSCR
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def bitfield BT <25:21>;
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