pred.isa revision 6724
16019Shines@cs.fsu.edu// -*- mode:c++ -*- 26019Shines@cs.fsu.edu 36019Shines@cs.fsu.edu// Copyright (c) 2007-2008 The Florida State University 46019Shines@cs.fsu.edu// All rights reserved. 56019Shines@cs.fsu.edu// 66019Shines@cs.fsu.edu// Redistribution and use in source and binary forms, with or without 76019Shines@cs.fsu.edu// modification, are permitted provided that the following conditions are 86019Shines@cs.fsu.edu// met: redistributions of source code must retain the above copyright 96019Shines@cs.fsu.edu// notice, this list of conditions and the following disclaimer; 106019Shines@cs.fsu.edu// redistributions in binary form must reproduce the above copyright 116019Shines@cs.fsu.edu// notice, this list of conditions and the following disclaimer in the 126019Shines@cs.fsu.edu// documentation and/or other materials provided with the distribution; 136019Shines@cs.fsu.edu// neither the name of the copyright holders nor the names of its 146019Shines@cs.fsu.edu// contributors may be used to endorse or promote products derived from 156019Shines@cs.fsu.edu// this software without specific prior written permission. 166019Shines@cs.fsu.edu// 176019Shines@cs.fsu.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 186019Shines@cs.fsu.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 196019Shines@cs.fsu.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 206019Shines@cs.fsu.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 216019Shines@cs.fsu.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 226019Shines@cs.fsu.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 236019Shines@cs.fsu.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 246019Shines@cs.fsu.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 256019Shines@cs.fsu.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 266019Shines@cs.fsu.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 276019Shines@cs.fsu.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 286019Shines@cs.fsu.edu// 296019Shines@cs.fsu.edu// Authors: Stephen Hines 306019Shines@cs.fsu.edu 316019Shines@cs.fsu.edu//////////////////////////////////////////////////////////////////// 326019Shines@cs.fsu.edu// 336019Shines@cs.fsu.edu// Predicated Instruction Execution 346019Shines@cs.fsu.edu// 356019Shines@cs.fsu.edu 366243Sgblack@eecs.umich.edulet {{ 376724Sgblack@eecs.umich.edu predicateTest = 'testPredicate(CondCodes, condCode)' 386243Sgblack@eecs.umich.edu}}; 396243Sgblack@eecs.umich.edu 406019Shines@cs.fsu.edudef template PredOpExecute {{ 416019Shines@cs.fsu.edu Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 426019Shines@cs.fsu.edu { 436019Shines@cs.fsu.edu Fault fault = NoFault; 446271Sgblack@eecs.umich.edu uint64_t resTemp = 0; 456271Sgblack@eecs.umich.edu resTemp = resTemp; 466019Shines@cs.fsu.edu %(op_decl)s; 476019Shines@cs.fsu.edu %(op_rd)s; 486019Shines@cs.fsu.edu 496243Sgblack@eecs.umich.edu if (%(predicate_test)s) 506019Shines@cs.fsu.edu { 516243Sgblack@eecs.umich.edu %(code)s; 526019Shines@cs.fsu.edu if (fault == NoFault) 536019Shines@cs.fsu.edu { 546019Shines@cs.fsu.edu %(op_wb)s; 556019Shines@cs.fsu.edu } 566019Shines@cs.fsu.edu } 576019Shines@cs.fsu.edu 586019Shines@cs.fsu.edu return fault; 596019Shines@cs.fsu.edu } 606019Shines@cs.fsu.edu}}; 616019Shines@cs.fsu.edu 626265Sgblack@eecs.umich.edudef template DataDecode {{ 636265Sgblack@eecs.umich.edu if (machInst.opcode4 == 0) { 646265Sgblack@eecs.umich.edu if (machInst.sField == 0) 656265Sgblack@eecs.umich.edu return new %(class_name)sImm(machInst); 666265Sgblack@eecs.umich.edu else 676265Sgblack@eecs.umich.edu return new %(class_name)sImmCc(machInst); 686265Sgblack@eecs.umich.edu } else { 696265Sgblack@eecs.umich.edu if (machInst.sField == 0) 706265Sgblack@eecs.umich.edu return new %(class_name)s(machInst); 716265Sgblack@eecs.umich.edu else 726265Sgblack@eecs.umich.edu return new %(class_name)sCc(machInst); 736265Sgblack@eecs.umich.edu } 746265Sgblack@eecs.umich.edu}}; 756265Sgblack@eecs.umich.edu 766270Sgblack@eecs.umich.edudef template DataImmDecode {{ 776270Sgblack@eecs.umich.edu if (machInst.sField == 0) 786270Sgblack@eecs.umich.edu return new %(class_name)s(machInst); 796270Sgblack@eecs.umich.edu else 806270Sgblack@eecs.umich.edu return new %(class_name)sCc(machInst); 816270Sgblack@eecs.umich.edu}}; 826270Sgblack@eecs.umich.edu 836019Shines@cs.fsu.edulet {{ 846019Shines@cs.fsu.edu 856019Shines@cs.fsu.edu calcCcCode = ''' 866019Shines@cs.fsu.edu uint16_t _ic, _iv, _iz, _in; 876019Shines@cs.fsu.edu 886019Shines@cs.fsu.edu _in = (resTemp >> 31) & 1; 896019Shines@cs.fsu.edu _iz = (resTemp == 0); 906019Shines@cs.fsu.edu _iv = %(ivValue)s & 1; 916019Shines@cs.fsu.edu _ic = %(icValue)s & 1; 926019Shines@cs.fsu.edu 936724Sgblack@eecs.umich.edu CondCodes = _in << 31 | _iz << 30 | _ic << 29 | _iv << 28 | 946724Sgblack@eecs.umich.edu (CondCodes & 0x0FFFFFFF); 956019Shines@cs.fsu.edu 966019Shines@cs.fsu.edu DPRINTF(Arm, "in = %%d\\n", _in); 976019Shines@cs.fsu.edu DPRINTF(Arm, "iz = %%d\\n", _iz); 986019Shines@cs.fsu.edu DPRINTF(Arm, "ic = %%d\\n", _ic); 996019Shines@cs.fsu.edu DPRINTF(Arm, "iv = %%d\\n", _iv); 1006019Shines@cs.fsu.edu ''' 1016019Shines@cs.fsu.edu 1026019Shines@cs.fsu.edu}}; 1036019Shines@cs.fsu.edu 1046276Sgblack@eecs.umich.edulet {{ 1056276Sgblack@eecs.umich.edu def getCcCode(flagtype): 1066276Sgblack@eecs.umich.edu icReg = icImm = iv = '' 1076276Sgblack@eecs.umich.edu if flagtype == "none": 1086724Sgblack@eecs.umich.edu icReg = icImm = 'CondCodes<29:>' 1096724Sgblack@eecs.umich.edu iv = 'CondCodes<28:>' 1106276Sgblack@eecs.umich.edu elif flagtype == "add": 1116276Sgblack@eecs.umich.edu icReg = icImm = 'findCarry(32, resTemp, Rn, op2)' 1126276Sgblack@eecs.umich.edu iv = 'findOverflow(32, resTemp, Rn, op2)' 1136276Sgblack@eecs.umich.edu elif flagtype == "sub": 1146276Sgblack@eecs.umich.edu icReg = icImm ='findCarry(32, resTemp, Rn, ~op2)' 1156276Sgblack@eecs.umich.edu iv = 'findOverflow(32, resTemp, Rn, ~op2)' 1166276Sgblack@eecs.umich.edu elif flagtype == "rsb": 1176276Sgblack@eecs.umich.edu icReg = icImm = 'findCarry(32, resTemp, op2, ~Rn)' 1186276Sgblack@eecs.umich.edu iv = 'findOverflow(32, resTemp, op2, ~Rn)' 1196276Sgblack@eecs.umich.edu else: 1206724Sgblack@eecs.umich.edu icReg = 'shift_carry_rs(Rm, Rs, shift, CondCodes<29:>)' 1216724Sgblack@eecs.umich.edu icImm = 'shift_carry_imm(Rm, shift_size, shift, CondCodes<29:>)' 1226724Sgblack@eecs.umich.edu iv = 'CondCodes<28:>' 1236276Sgblack@eecs.umich.edu return (calcCcCode % {"icValue" : icReg, "ivValue" : iv}, 1246276Sgblack@eecs.umich.edu calcCcCode % {"icValue" : icImm, "ivValue" : iv}) 1256276Sgblack@eecs.umich.edu 1266276Sgblack@eecs.umich.edu def getImmCcCode(flagtype): 1276276Sgblack@eecs.umich.edu ivValue = icValue = '' 1286276Sgblack@eecs.umich.edu if flagtype == "none": 1296724Sgblack@eecs.umich.edu icValue = 'CondCodes<29:>' 1306724Sgblack@eecs.umich.edu ivValue = 'CondCodes<28:>' 1316276Sgblack@eecs.umich.edu elif flagtype == "add": 1326276Sgblack@eecs.umich.edu icValue = 'findCarry(32, resTemp, Rn, rotated_imm)' 1336276Sgblack@eecs.umich.edu ivValue = 'findOverflow(32, resTemp, Rn, rotated_imm)' 1346276Sgblack@eecs.umich.edu elif flagtype == "sub": 1356276Sgblack@eecs.umich.edu icValue = 'findCarry(32, resTemp, Rn, ~rotated_imm)' 1366276Sgblack@eecs.umich.edu ivValue = 'findOverflow(32, resTemp, Rn, ~rotated_imm)' 1376276Sgblack@eecs.umich.edu elif flagtype == "rsb": 1386276Sgblack@eecs.umich.edu icValue = 'findCarry(32, resTemp, rotated_imm, ~Rn)' 1396276Sgblack@eecs.umich.edu ivValue = 'findOverflow(32, resTemp, rotated_imm, ~Rn)' 1406276Sgblack@eecs.umich.edu else: 1416724Sgblack@eecs.umich.edu icValue = '(rotate ? rotated_carry:CondCodes<29:>)' 1426724Sgblack@eecs.umich.edu ivValue = 'CondCodes<28:>' 1436276Sgblack@eecs.umich.edu return calcCcCode % vars() 1446276Sgblack@eecs.umich.edu}}; 1456276Sgblack@eecs.umich.edu 1466276Sgblack@eecs.umich.edudef format DataOp(code, flagtype = logic) {{ 1476276Sgblack@eecs.umich.edu (regCcCode, immCcCode) = getCcCode(flagtype) 1486272Sgblack@eecs.umich.edu regCode = '''uint32_t op2 = shift_rm_rs(Rm, Rs, 1496724Sgblack@eecs.umich.edu shift, CondCodes<29:0>); 1506272Sgblack@eecs.umich.edu op2 = op2;''' + code 1516272Sgblack@eecs.umich.edu immCode = '''uint32_t op2 = shift_rm_imm(Rm, shift_size, 1526724Sgblack@eecs.umich.edu shift, CondCodes<29:0>); 1536272Sgblack@eecs.umich.edu op2 = op2;''' + code 1546265Sgblack@eecs.umich.edu regIop = InstObjParams(name, Name, 'PredIntOp', 1556265Sgblack@eecs.umich.edu {"code": regCode, 1566265Sgblack@eecs.umich.edu "predicate_test": predicateTest}) 1576265Sgblack@eecs.umich.edu immIop = InstObjParams(name, Name + "Imm", 'PredIntOp', 1586265Sgblack@eecs.umich.edu {"code": immCode, 1596265Sgblack@eecs.umich.edu "predicate_test": predicateTest}) 1606265Sgblack@eecs.umich.edu regCcIop = InstObjParams(name, Name + "Cc", 'PredIntOp', 1616273Sgblack@eecs.umich.edu {"code": regCode + regCcCode, 1626265Sgblack@eecs.umich.edu "predicate_test": predicateTest}) 1636265Sgblack@eecs.umich.edu immCcIop = InstObjParams(name, Name + "ImmCc", 'PredIntOp', 1646273Sgblack@eecs.umich.edu {"code": immCode + immCcCode, 1656265Sgblack@eecs.umich.edu "predicate_test": predicateTest}) 1666265Sgblack@eecs.umich.edu header_output = BasicDeclare.subst(regIop) + \ 1676265Sgblack@eecs.umich.edu BasicDeclare.subst(immIop) + \ 1686265Sgblack@eecs.umich.edu BasicDeclare.subst(regCcIop) + \ 1696265Sgblack@eecs.umich.edu BasicDeclare.subst(immCcIop) 1706265Sgblack@eecs.umich.edu decoder_output = BasicConstructor.subst(regIop) + \ 1716265Sgblack@eecs.umich.edu BasicConstructor.subst(immIop) + \ 1726265Sgblack@eecs.umich.edu BasicConstructor.subst(regCcIop) + \ 1736265Sgblack@eecs.umich.edu BasicConstructor.subst(immCcIop) 1746265Sgblack@eecs.umich.edu exec_output = PredOpExecute.subst(regIop) + \ 1756265Sgblack@eecs.umich.edu PredOpExecute.subst(immIop) + \ 1766265Sgblack@eecs.umich.edu PredOpExecute.subst(regCcIop) + \ 1776265Sgblack@eecs.umich.edu PredOpExecute.subst(immCcIop) 1786265Sgblack@eecs.umich.edu decode_block = DataDecode.subst(regIop) 1796265Sgblack@eecs.umich.edu}}; 1806265Sgblack@eecs.umich.edu 1816276Sgblack@eecs.umich.edudef format DataImmOp(code, flagtype = logic) {{ 1826270Sgblack@eecs.umich.edu code += "resTemp = resTemp;" 1836270Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredImmOp', 1846270Sgblack@eecs.umich.edu {"code": code, 1856270Sgblack@eecs.umich.edu "predicate_test": predicateTest}) 1866270Sgblack@eecs.umich.edu ccIop = InstObjParams(name, Name + "Cc", 'PredImmOp', 1876276Sgblack@eecs.umich.edu {"code": code + getImmCcCode(flagtype), 1886270Sgblack@eecs.umich.edu "predicate_test": predicateTest}) 1896270Sgblack@eecs.umich.edu header_output = BasicDeclare.subst(iop) + \ 1906270Sgblack@eecs.umich.edu BasicDeclare.subst(ccIop) 1916270Sgblack@eecs.umich.edu decoder_output = BasicConstructor.subst(iop) + \ 1926270Sgblack@eecs.umich.edu BasicConstructor.subst(ccIop) 1936270Sgblack@eecs.umich.edu exec_output = PredOpExecute.subst(iop) + \ 1946270Sgblack@eecs.umich.edu PredOpExecute.subst(ccIop) 1956270Sgblack@eecs.umich.edu decode_block = DataImmDecode.subst(iop) 1966270Sgblack@eecs.umich.edu}}; 1976270Sgblack@eecs.umich.edu 1986019Shines@cs.fsu.edudef format PredOp(code, *opt_flags) {{ 1996243Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredOp', 2006243Sgblack@eecs.umich.edu {"code": code, 2016243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 2026243Sgblack@eecs.umich.edu opt_flags) 2036019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 2046019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 2056019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 2066019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 2076019Shines@cs.fsu.edu}}; 2086019Shines@cs.fsu.edu 2096019Shines@cs.fsu.edudef format PredImmOp(code, *opt_flags) {{ 2106243Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredImmOp', 2116243Sgblack@eecs.umich.edu {"code": code, 2126243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 2136243Sgblack@eecs.umich.edu opt_flags) 2146019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 2156019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 2166019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 2176019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 2186019Shines@cs.fsu.edu}}; 2196019Shines@cs.fsu.edu 2206019Shines@cs.fsu.edudef format PredImmOpCc(code, icValue, ivValue, *opt_flags) {{ 2216019Shines@cs.fsu.edu ccCode = calcCcCode % vars() 2226019Shines@cs.fsu.edu code += ccCode; 2236019Shines@cs.fsu.edu iop = InstObjParams(name, Name, 'PredImmOp', 2246243Sgblack@eecs.umich.edu {"code": code, 2256243Sgblack@eecs.umich.edu "cc_code": ccCode, 2266243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 2276243Sgblack@eecs.umich.edu opt_flags) 2286019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 2296019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 2306019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 2316019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 2326019Shines@cs.fsu.edu}}; 2336019Shines@cs.fsu.edu 2346019Shines@cs.fsu.edudef format PredIntOp(code, *opt_flags) {{ 2356019Shines@cs.fsu.edu new_code = ArmGenericCodeSubs(code) 2366243Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredIntOp', 2376243Sgblack@eecs.umich.edu {"code": new_code, 2386243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 2396243Sgblack@eecs.umich.edu opt_flags) 2406019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 2416019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 2426019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 2436019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 2446019Shines@cs.fsu.edu}}; 2456019Shines@cs.fsu.edu 2466019Shines@cs.fsu.edudef format PredIntOpCc(code, icValue, ivValue, *opt_flags) {{ 2476019Shines@cs.fsu.edu ccCode = calcCcCode % vars() 2486019Shines@cs.fsu.edu code += ccCode; 2496019Shines@cs.fsu.edu new_code = ArmGenericCodeSubs(code) 2506019Shines@cs.fsu.edu iop = InstObjParams(name, Name, 'PredIntOp', 2516243Sgblack@eecs.umich.edu {"code": new_code, 2526243Sgblack@eecs.umich.edu "cc_code": ccCode, 2536243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 2546243Sgblack@eecs.umich.edu opt_flags) 2556019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 2566019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 2576019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 2586019Shines@cs.fsu.edu exec_output = PredOpExecute.subst(iop) 2596019Shines@cs.fsu.edu}}; 2606019Shines@cs.fsu.edu 261