pred.isa revision 8304
16019Shines@cs.fsu.edu// -*- mode:c++ -*- 26019Shines@cs.fsu.edu 37110Sgblack@eecs.umich.edu// Copyright (c) 2010 ARM Limited 47110Sgblack@eecs.umich.edu// All rights reserved 57110Sgblack@eecs.umich.edu// 67110Sgblack@eecs.umich.edu// The license below extends only to copyright in the software and shall 77110Sgblack@eecs.umich.edu// not be construed as granting a license to any other intellectual 87110Sgblack@eecs.umich.edu// property including but not limited to intellectual property relating 97110Sgblack@eecs.umich.edu// to a hardware implementation of the functionality of the software 107110Sgblack@eecs.umich.edu// licensed hereunder. You may use the software subject to the license 117110Sgblack@eecs.umich.edu// terms below provided that you ensure that this notice is replicated 127110Sgblack@eecs.umich.edu// unmodified and in its entirety in all distributions of the software, 137110Sgblack@eecs.umich.edu// modified or unmodified, in source code or in binary form. 147110Sgblack@eecs.umich.edu// 156019Shines@cs.fsu.edu// Copyright (c) 2007-2008 The Florida State University 166019Shines@cs.fsu.edu// All rights reserved. 176019Shines@cs.fsu.edu// 186019Shines@cs.fsu.edu// Redistribution and use in source and binary forms, with or without 196019Shines@cs.fsu.edu// modification, are permitted provided that the following conditions are 206019Shines@cs.fsu.edu// met: redistributions of source code must retain the above copyright 216019Shines@cs.fsu.edu// notice, this list of conditions and the following disclaimer; 226019Shines@cs.fsu.edu// redistributions in binary form must reproduce the above copyright 236019Shines@cs.fsu.edu// notice, this list of conditions and the following disclaimer in the 246019Shines@cs.fsu.edu// documentation and/or other materials provided with the distribution; 256019Shines@cs.fsu.edu// neither the name of the copyright holders nor the names of its 266019Shines@cs.fsu.edu// contributors may be used to endorse or promote products derived from 276019Shines@cs.fsu.edu// this software without specific prior written permission. 286019Shines@cs.fsu.edu// 296019Shines@cs.fsu.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 306019Shines@cs.fsu.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 316019Shines@cs.fsu.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 326019Shines@cs.fsu.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 336019Shines@cs.fsu.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 346019Shines@cs.fsu.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 356019Shines@cs.fsu.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 366019Shines@cs.fsu.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 376019Shines@cs.fsu.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 386019Shines@cs.fsu.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 396019Shines@cs.fsu.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 406019Shines@cs.fsu.edu// 416019Shines@cs.fsu.edu// Authors: Stephen Hines 426019Shines@cs.fsu.edu 436019Shines@cs.fsu.edulet {{ 446741Sgblack@eecs.umich.edu 456741Sgblack@eecs.umich.edu calcCcCode = ''' 466741Sgblack@eecs.umich.edu if (%(canOverflow)s){ 476741Sgblack@eecs.umich.edu cprintf("canOverflow: %%d\\n", Rd < resTemp); 488301SAli.Saidi@ARM.com CpsrQ = (Rd < resTemp) ? 1 << 27 : 0; 496741Sgblack@eecs.umich.edu } else { 506741Sgblack@eecs.umich.edu uint16_t _ic, _iv, _iz, _in; 518304SAli.Saidi@ARM.com _in = (resTemp >> %(negBit)d); 526741Sgblack@eecs.umich.edu _iz = (resTemp == 0); 538304SAli.Saidi@ARM.com _iv = %(ivValue)s; 548304SAli.Saidi@ARM.com _ic = %(icValue)s; 556741Sgblack@eecs.umich.edu 568303SAli.Saidi@ARM.com CondCodesNZ = (_in << 1) | (_iz); 578303SAli.Saidi@ARM.com CondCodesC = _ic; 588303SAli.Saidi@ARM.com CondCodesV = _iv; 596019Shines@cs.fsu.edu 606741Sgblack@eecs.umich.edu DPRINTF(Arm, "in = %%d\\n", _in); 616741Sgblack@eecs.umich.edu DPRINTF(Arm, "iz = %%d\\n", _iz); 626741Sgblack@eecs.umich.edu DPRINTF(Arm, "ic = %%d\\n", _ic); 636741Sgblack@eecs.umich.edu DPRINTF(Arm, "iv = %%d\\n", _iv); 646741Sgblack@eecs.umich.edu } 656019Shines@cs.fsu.edu ''' 666019Shines@cs.fsu.edu}}; 676019Shines@cs.fsu.edu 686276Sgblack@eecs.umich.edulet {{ 696276Sgblack@eecs.umich.edu def getCcCode(flagtype): 706276Sgblack@eecs.umich.edu icReg = icImm = iv = '' 716741Sgblack@eecs.umich.edu negBit = 31 726741Sgblack@eecs.umich.edu canOverflow = 'false' 736741Sgblack@eecs.umich.edu 746276Sgblack@eecs.umich.edu if flagtype == "none": 758303SAli.Saidi@ARM.com icReg = icImm = 'CondCodesC' 768303SAli.Saidi@ARM.com iv = 'CondCodesV' 776741Sgblack@eecs.umich.edu elif flagtype == "llbit": 788303SAli.Saidi@ARM.com icReg = icImm = 'CondCodesC' 798303SAli.Saidi@ARM.com iv = 'CondCodesV' 806741Sgblack@eecs.umich.edu negBit = 63 816741Sgblack@eecs.umich.edu elif flagtype == "overflow": 826741Sgblack@eecs.umich.edu canOverflow = "true" 836741Sgblack@eecs.umich.edu icReg = icImm = iv = '0' 846276Sgblack@eecs.umich.edu elif flagtype == "add": 856276Sgblack@eecs.umich.edu icReg = icImm = 'findCarry(32, resTemp, Rn, op2)' 866276Sgblack@eecs.umich.edu iv = 'findOverflow(32, resTemp, Rn, op2)' 876276Sgblack@eecs.umich.edu elif flagtype == "sub": 886276Sgblack@eecs.umich.edu icReg = icImm ='findCarry(32, resTemp, Rn, ~op2)' 896276Sgblack@eecs.umich.edu iv = 'findOverflow(32, resTemp, Rn, ~op2)' 906276Sgblack@eecs.umich.edu elif flagtype == "rsb": 916276Sgblack@eecs.umich.edu icReg = icImm = 'findCarry(32, resTemp, op2, ~Rn)' 926276Sgblack@eecs.umich.edu iv = 'findOverflow(32, resTemp, op2, ~Rn)' 936276Sgblack@eecs.umich.edu else: 948303SAli.Saidi@ARM.com icReg = 'shift_carry_rs(Rm, Rs<7:0>, shift, CondCodesC)' 958303SAli.Saidi@ARM.com icImm = 'shift_carry_imm(Rm, shift_size, shift, CondCodesC)' 968303SAli.Saidi@ARM.com iv = 'CondCodesV' 976741Sgblack@eecs.umich.edu return (calcCcCode % {"icValue" : icReg, 986741Sgblack@eecs.umich.edu "ivValue" : iv, 996741Sgblack@eecs.umich.edu "negBit" : negBit, 1006741Sgblack@eecs.umich.edu "canOverflow" : canOverflow }, 1016741Sgblack@eecs.umich.edu calcCcCode % {"icValue" : icImm, 1026741Sgblack@eecs.umich.edu "ivValue" : iv, 1036741Sgblack@eecs.umich.edu "negBit" : negBit, 1046741Sgblack@eecs.umich.edu "canOverflow" : canOverflow }) 1056276Sgblack@eecs.umich.edu 1066276Sgblack@eecs.umich.edu def getImmCcCode(flagtype): 1076276Sgblack@eecs.umich.edu ivValue = icValue = '' 1086741Sgblack@eecs.umich.edu negBit = 31 1096741Sgblack@eecs.umich.edu canOverflow = 'false' 1106276Sgblack@eecs.umich.edu if flagtype == "none": 1118303SAli.Saidi@ARM.com icValue = 'CondCodesC' 1128303SAli.Saidi@ARM.com ivValue = 'CondCodesV' 1136741Sgblack@eecs.umich.edu elif flagtype == "llbit": 1148303SAli.Saidi@ARM.com icValue = 'CondCodesC' 1158303SAli.Saidi@ARM.com ivValue = 'CondCodesV' 1166741Sgblack@eecs.umich.edu negBit = 63 1176741Sgblack@eecs.umich.edu elif flagtype == "overflow": 1186741Sgblack@eecs.umich.edu icVaule = ivValue = '0' 1196741Sgblack@eecs.umich.edu canOverflow = "true" 1206276Sgblack@eecs.umich.edu elif flagtype == "add": 1216276Sgblack@eecs.umich.edu icValue = 'findCarry(32, resTemp, Rn, rotated_imm)' 1226276Sgblack@eecs.umich.edu ivValue = 'findOverflow(32, resTemp, Rn, rotated_imm)' 1236276Sgblack@eecs.umich.edu elif flagtype == "sub": 1246276Sgblack@eecs.umich.edu icValue = 'findCarry(32, resTemp, Rn, ~rotated_imm)' 1256276Sgblack@eecs.umich.edu ivValue = 'findOverflow(32, resTemp, Rn, ~rotated_imm)' 1266276Sgblack@eecs.umich.edu elif flagtype == "rsb": 1276276Sgblack@eecs.umich.edu icValue = 'findCarry(32, resTemp, rotated_imm, ~Rn)' 1286276Sgblack@eecs.umich.edu ivValue = 'findOverflow(32, resTemp, rotated_imm, ~Rn)' 1297110Sgblack@eecs.umich.edu elif flagtype == "modImm": 1307110Sgblack@eecs.umich.edu icValue = 'rotated_carry' 1318303SAli.Saidi@ARM.com ivValue = 'CondCodesV' 1326276Sgblack@eecs.umich.edu else: 1338303SAli.Saidi@ARM.com icValue = '(rotate ? rotated_carry:CondCodesC)' 1348303SAli.Saidi@ARM.com ivValue = 'CondCodesV' 1356276Sgblack@eecs.umich.edu return calcCcCode % vars() 1366276Sgblack@eecs.umich.edu}}; 1376276Sgblack@eecs.umich.edu 1386276Sgblack@eecs.umich.edudef format DataOp(code, flagtype = logic) {{ 1396276Sgblack@eecs.umich.edu (regCcCode, immCcCode) = getCcCode(flagtype) 1406741Sgblack@eecs.umich.edu regCode = '''uint32_t op2 = shift_rm_rs(Rm, Rs<7:0>, 1418304SAli.Saidi@ARM.com shift, 0); 1426272Sgblack@eecs.umich.edu op2 = op2;''' + code 1436272Sgblack@eecs.umich.edu immCode = '''uint32_t op2 = shift_rm_imm(Rm, shift_size, 1448304SAli.Saidi@ARM.com shift, OptShiftRmCondCodesC); 1456272Sgblack@eecs.umich.edu op2 = op2;''' + code 1466265Sgblack@eecs.umich.edu regIop = InstObjParams(name, Name, 'PredIntOp', 1476265Sgblack@eecs.umich.edu {"code": regCode, 1488304SAli.Saidi@ARM.com "predicate_test": pickPredicate(regCode)}) 1496265Sgblack@eecs.umich.edu immIop = InstObjParams(name, Name + "Imm", 'PredIntOp', 1506265Sgblack@eecs.umich.edu {"code": immCode, 1518304SAli.Saidi@ARM.com "predicate_test": pickPredicate(imm)}) 1526265Sgblack@eecs.umich.edu regCcIop = InstObjParams(name, Name + "Cc", 'PredIntOp', 1538304SAli.Saidi@ARM.com {"code": regCode + regCcCode, 1548304SAli.Saidi@ARM.com "predicate_test": pickPredicate(regCode + regCcCode)}) 1556265Sgblack@eecs.umich.edu immCcIop = InstObjParams(name, Name + "ImmCc", 'PredIntOp', 1568304SAli.Saidi@ARM.com {"code": immCode + immCcCode, 1578304SAli.Saidi@ARM.com "predicate_test": pickPredicate(immCode + immCcCode)}) 1586265Sgblack@eecs.umich.edu header_output = BasicDeclare.subst(regIop) + \ 1596265Sgblack@eecs.umich.edu BasicDeclare.subst(immIop) + \ 1606265Sgblack@eecs.umich.edu BasicDeclare.subst(regCcIop) + \ 1616265Sgblack@eecs.umich.edu BasicDeclare.subst(immCcIop) 1626265Sgblack@eecs.umich.edu decoder_output = BasicConstructor.subst(regIop) + \ 1636265Sgblack@eecs.umich.edu BasicConstructor.subst(immIop) + \ 1646265Sgblack@eecs.umich.edu BasicConstructor.subst(regCcIop) + \ 1656265Sgblack@eecs.umich.edu BasicConstructor.subst(immCcIop) 1666265Sgblack@eecs.umich.edu exec_output = PredOpExecute.subst(regIop) + \ 1676265Sgblack@eecs.umich.edu PredOpExecute.subst(immIop) + \ 1686265Sgblack@eecs.umich.edu PredOpExecute.subst(regCcIop) + \ 1696265Sgblack@eecs.umich.edu PredOpExecute.subst(immCcIop) 1706265Sgblack@eecs.umich.edu decode_block = DataDecode.subst(regIop) 1716265Sgblack@eecs.umich.edu}}; 1726265Sgblack@eecs.umich.edu 1736276Sgblack@eecs.umich.edudef format DataImmOp(code, flagtype = logic) {{ 1746270Sgblack@eecs.umich.edu code += "resTemp = resTemp;" 1756270Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredImmOp', 1766270Sgblack@eecs.umich.edu {"code": code, 1778304SAli.Saidi@ARM.com "predicate_test": pickPredicate(code)}) 1786270Sgblack@eecs.umich.edu ccIop = InstObjParams(name, Name + "Cc", 'PredImmOp', 1798304SAli.Saidi@ARM.com {"code": code + getImmCcCode(flagtype), 1808304SAli.Saidi@ARM.com "predicate_test": pickPredicate(code + getImmCcCode(flagtype))}) 1816270Sgblack@eecs.umich.edu header_output = BasicDeclare.subst(iop) + \ 1826270Sgblack@eecs.umich.edu BasicDeclare.subst(ccIop) 1836270Sgblack@eecs.umich.edu decoder_output = BasicConstructor.subst(iop) + \ 1846270Sgblack@eecs.umich.edu BasicConstructor.subst(ccIop) 1856270Sgblack@eecs.umich.edu exec_output = PredOpExecute.subst(iop) + \ 1866270Sgblack@eecs.umich.edu PredOpExecute.subst(ccIop) 1876270Sgblack@eecs.umich.edu decode_block = DataImmDecode.subst(iop) 1886270Sgblack@eecs.umich.edu}}; 1896270Sgblack@eecs.umich.edu 1906019Shines@cs.fsu.edudef format PredOp(code, *opt_flags) {{ 1916243Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredOp', 1926243Sgblack@eecs.umich.edu {"code": code, 1938304SAli.Saidi@ARM.com "predicate_test": pickPredicate(code)}, 1946243Sgblack@eecs.umich.edu opt_flags) 1956019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 1966019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 1976019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 1986019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 1996019Shines@cs.fsu.edu}}; 2006019Shines@cs.fsu.edu 2016019Shines@cs.fsu.edudef format PredImmOp(code, *opt_flags) {{ 2026243Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredImmOp', 2036243Sgblack@eecs.umich.edu {"code": code, 2048304SAli.Saidi@ARM.com "predicate_test": pickPredicate(code)}, 2056243Sgblack@eecs.umich.edu opt_flags) 2066019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 2076019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 2086019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 2096019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 2106019Shines@cs.fsu.edu}}; 2116019Shines@cs.fsu.edu 212