gem5/src/arch/x86/isa/operands.isa
Gabe Black 3a55fc5cac X86: Implement shift right/left double microops.
This is my best guess as far as what these should do. Other existing microops
use implicit registers, mul1s and mul1u for instance, so this should be ok.
The microop that loads the implicit DoubleBits register would fall into one
of the microop slots for moving to/from special registers.
2009-08-07 10:13:20 -07:00

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// Copyright (c) 2007 The Regents of The University of Michigan
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met: redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer;
// redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution;
// neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Authors: Gabe Black
// Copyright (c) 2007-2008 The Hewlett-Packard Development Company
// All rights reserved.
//
// Redistribution and use of this software in source and binary forms,
// with or without modification, are permitted provided that the
// following conditions are met:
//
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//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer. Redistributions
// in binary form must reproduce the above copyright notice, this list of
// conditions and the following disclaimer in the documentation and/or
// other materials provided with the distribution. Neither the name of
// the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission. No right of
// sublicense is granted herewith. Derivatives of the software and
// output created using the software may be prepared, but only for
// Non-Commercial Uses. Derivatives of the software may be shared with
// others provided: (i) the others agree to abide by the list of
// conditions herein which includes the Non-Commercial Use restrictions;
// and (ii) such Derivatives of the software include the above copyright
// notice to acknowledge the contribution from this software where
// applicable, this list of conditions and the disclaimer below.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Authors: Gabe Black
def operand_types {{
'sb' : ('signed int', 8),
'ub' : ('unsigned int', 8),
'sw' : ('signed int', 16),
'uw' : ('unsigned int', 16),
'sdw' : ('signed int', 32),
'udw' : ('unsigned int', 32),
'sqw' : ('signed int', 64),
'uqw' : ('unsigned int', 64),
'sf' : ('float', 32),
'df' : ('float', 64),
}};
let {{
def foldInt(idx, foldBit, id):
return ('IntReg', 'uqw', 'INTREG_FOLDED(%s, %s)' % (idx, foldBit),
'IsInteger', id)
def intReg(idx, id):
return ('IntReg', 'uqw', idx, 'IsInteger', id)
def impIntReg(idx, id):
return ('IntReg', 'uqw', 'INTREG_IMPLICIT(%s)' % idx, 'IsInteger', id)
def floatReg(idx, id):
return ('FloatReg', 'df', idx, 'IsFloating', id)
def controlReg(idx, id, ctype = 'uqw'):
return ('ControlReg', ctype, idx,
(None, None, ['IsSerializeAfter',
'IsSerializing',
'IsNonSpeculative']),
id)
}};
def operands {{
'SrcReg1': foldInt('src1', 'foldOBit', 1),
'SSrcReg1': intReg('src1', 1),
'SrcReg2': foldInt('src2', 'foldOBit', 2),
'SSrcReg2': intReg('src2', 1),
'Index': foldInt('index', 'foldABit', 3),
'Base': foldInt('base', 'foldABit', 4),
'DestReg': foldInt('dest', 'foldOBit', 5),
'SDestReg': intReg('dest', 5),
'Data': foldInt('data', 'foldOBit', 6),
'ProdLow': impIntReg(0, 7),
'ProdHi': impIntReg(1, 8),
'Quotient': impIntReg(2, 9),
'Remainder': impIntReg(3, 10),
'Divisor': impIntReg(4, 11),
'DoubleBits': impIntReg(5, 11),
'Rax': intReg('(INTREG_RAX)', 12),
'Rbx': intReg('(INTREG_RBX)', 13),
'Rcx': intReg('(INTREG_RCX)', 14),
'Rdx': intReg('(INTREG_RDX)', 15),
'Rsp': intReg('(INTREG_RSP)', 16),
'Rbp': intReg('(INTREG_RBP)', 17),
'Rsi': intReg('(INTREG_RSI)', 18),
'Rdi': intReg('(INTREG_RDI)', 19),
'FpSrcReg1': floatReg('src1', 20),
'FpSrcReg2': floatReg('src2', 21),
'FpDestReg': floatReg('dest', 22),
'FpData': floatReg('data', 23),
'RIP': ('NPC', 'uqw', None, (None, None, 'IsControl'), 50),
'uIP': ('UPC', 'uqw', None, (None, None, 'IsControl'), 51),
'nuIP': ('NUPC', 'uqw', None, (None, None, 'IsControl'), 52),
# This holds the condition code portion of the flag register. The
# nccFlagBits version holds the rest.
'ccFlagBits': intReg('INTREG_PSEUDO(0)', 60),
# These register should needs to be more protected so that later
# instructions don't map their indexes with an old value.
'nccFlagBits': controlReg('MISCREG_RFLAGS', 61),
'TOP': controlReg('MISCREG_X87_TOP', 62, ctype='ub'),
# The segment base as used by memory instructions.
'SegBase': controlReg('MISCREG_SEG_EFF_BASE(segment)', 70),
# Operands to get and set registers indexed by the operands of the
# original instruction.
'ControlDest': controlReg('MISCREG_CR(dest)', 100),
'ControlSrc1': controlReg('MISCREG_CR(src1)', 101),
'DebugDest': controlReg('MISCREG_DR(dest)', 102),
'DebugSrc1': controlReg('MISCREG_DR(src1)', 103),
'SegBaseDest': controlReg('MISCREG_SEG_BASE(dest)', 104),
'SegBaseSrc1': controlReg('MISCREG_SEG_BASE(src1)', 105),
'SegLimitDest': controlReg('MISCREG_SEG_LIMIT(dest)', 106),
'SegLimitSrc1': controlReg('MISCREG_SEG_LIMIT(src1)', 107),
'SegSelDest': controlReg('MISCREG_SEG_SEL(dest)', 108),
'SegSelSrc1': controlReg('MISCREG_SEG_SEL(src1)', 109),
'SegAttrDest': controlReg('MISCREG_SEG_ATTR(dest)', 110),
'SegAttrSrc1': controlReg('MISCREG_SEG_ATTR(src1)', 111),
# Operands to access specific control registers directly.
'EferOp': controlReg('MISCREG_EFER', 200),
'CR4Op': controlReg('MISCREG_CR4', 201),
'DR7Op': controlReg('MISCREG_DR7', 202),
'LDTRBase': controlReg('MISCREG_TSL_BASE', 203),
'LDTRLimit': controlReg('MISCREG_TSL_LIMIT', 204),
'LDTRSel': controlReg('MISCREG_TSL', 205),
'GDTRBase': controlReg('MISCREG_TSG_BASE', 206),
'GDTRLimit': controlReg('MISCREG_TSG_LIMIT', 207),
'CSBase': controlReg('MISCREG_CS_EFF_BASE', 208),
'CSAttr': controlReg('MISCREG_CS_ATTR', 209),
'MiscRegDest': controlReg('dest', 210),
'MiscRegSrc1': controlReg('src1', 211),
'TscOp': controlReg('MISCREG_TSC', 212),
'M5Reg': controlReg('MISCREG_M5_REG', 213),
'Mem': ('Mem', 'uqw', None, \
('IsMemRef', 'IsLoad', 'IsStore'), 300)
}};