fp.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// Floating Point operate instructions 346019Shines@cs.fsu.edu// 356019Shines@cs.fsu.edu 366019Shines@cs.fsu.edudef template FPAExecute {{ 376019Shines@cs.fsu.edu Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 386019Shines@cs.fsu.edu { 396019Shines@cs.fsu.edu Fault fault = NoFault; 406019Shines@cs.fsu.edu 416019Shines@cs.fsu.edu %(fp_enable_check)s; 426019Shines@cs.fsu.edu 436019Shines@cs.fsu.edu %(op_decl)s; 446019Shines@cs.fsu.edu %(op_rd)s; 456019Shines@cs.fsu.edu 466243Sgblack@eecs.umich.edu if (%(predicate_test)s) { 476243Sgblack@eecs.umich.edu %(code)s; 486243Sgblack@eecs.umich.edu if (fault == NoFault) { 496243Sgblack@eecs.umich.edu %(op_wb)s; 506243Sgblack@eecs.umich.edu } 516019Shines@cs.fsu.edu } 526019Shines@cs.fsu.edu 536019Shines@cs.fsu.edu return fault; 546019Shines@cs.fsu.edu } 556019Shines@cs.fsu.edu}}; 566019Shines@cs.fsu.edu 576019Shines@cs.fsu.edudef template FloatDoubleDecode {{ 586019Shines@cs.fsu.edu { 596019Shines@cs.fsu.edu ArmStaticInst *i = NULL; 606019Shines@cs.fsu.edu switch (OPCODE_19 << 1 | OPCODE_7) 616019Shines@cs.fsu.edu { 626019Shines@cs.fsu.edu case 0: 636019Shines@cs.fsu.edu i = (ArmStaticInst *)new %(class_name)sS(machInst); 646019Shines@cs.fsu.edu break; 656019Shines@cs.fsu.edu case 1: 666019Shines@cs.fsu.edu i = (ArmStaticInst *)new %(class_name)sD(machInst); 676019Shines@cs.fsu.edu break; 686019Shines@cs.fsu.edu case 2: 696019Shines@cs.fsu.edu case 3: 706019Shines@cs.fsu.edu default: 716019Shines@cs.fsu.edu panic("Cannot decode float/double nature of the instruction"); 726019Shines@cs.fsu.edu } 736019Shines@cs.fsu.edu return i; 746019Shines@cs.fsu.edu } 756019Shines@cs.fsu.edu}}; 766019Shines@cs.fsu.edu 776019Shines@cs.fsu.edu// Primary format for float point operate instructions: 786019Shines@cs.fsu.edudef format FloatOp(code, *flags) {{ 796019Shines@cs.fsu.edu orig_code = code 806019Shines@cs.fsu.edu 816019Shines@cs.fsu.edu cblk = code 826252Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredOp', 836243Sgblack@eecs.umich.edu {"code": cblk, 846243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 856243Sgblack@eecs.umich.edu flags) 866019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 876019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 886019Shines@cs.fsu.edu exec_output = FPAExecute.subst(iop) 896019Shines@cs.fsu.edu 906019Shines@cs.fsu.edu sng_cblk = code 916252Sgblack@eecs.umich.edu sng_iop = InstObjParams(name, Name+'S', 'PredOp', 926243Sgblack@eecs.umich.edu {"code": sng_cblk, 936243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 946243Sgblack@eecs.umich.edu flags) 956019Shines@cs.fsu.edu header_output += BasicDeclare.subst(sng_iop) 966019Shines@cs.fsu.edu decoder_output += BasicConstructor.subst(sng_iop) 976019Shines@cs.fsu.edu exec_output += FPAExecute.subst(sng_iop) 986019Shines@cs.fsu.edu 996019Shines@cs.fsu.edu dbl_code = re.sub(r'\.sf', '.df', orig_code) 1006019Shines@cs.fsu.edu 1016019Shines@cs.fsu.edu dbl_cblk = dbl_code 1026252Sgblack@eecs.umich.edu dbl_iop = InstObjParams(name, Name+'D', 'PredOp', 1036243Sgblack@eecs.umich.edu {"code": dbl_cblk, 1046243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 1056243Sgblack@eecs.umich.edu flags) 1066019Shines@cs.fsu.edu header_output += BasicDeclare.subst(dbl_iop) 1076019Shines@cs.fsu.edu decoder_output += BasicConstructor.subst(dbl_iop) 1086019Shines@cs.fsu.edu exec_output += FPAExecute.subst(dbl_iop) 1096019Shines@cs.fsu.edu 1106019Shines@cs.fsu.edu decode_block = FloatDoubleDecode.subst(iop) 1116019Shines@cs.fsu.edu}}; 1126019Shines@cs.fsu.edu 1136019Shines@cs.fsu.edulet {{ 1146019Shines@cs.fsu.edu calcFPCcCode = ''' 1156019Shines@cs.fsu.edu uint16_t _in, _iz, _ic, _iv; 1166019Shines@cs.fsu.edu 1176019Shines@cs.fsu.edu _in = %(fReg1)s < %(fReg2)s; 1186019Shines@cs.fsu.edu _iz = %(fReg1)s == %(fReg2)s; 1196019Shines@cs.fsu.edu _ic = %(fReg1)s >= %(fReg2)s; 1206019Shines@cs.fsu.edu _iv = (isnan(%(fReg1)s) || isnan(%(fReg2)s)) & 1; 1216019Shines@cs.fsu.edu 1226724Sgblack@eecs.umich.edu CondCodes = _in << 31 | _iz << 30 | _ic << 29 | _iv << 28 | 1236724Sgblack@eecs.umich.edu (CondCodes & 0x0FFFFFFF); 1246019Shines@cs.fsu.edu ''' 1256019Shines@cs.fsu.edu}}; 1266019Shines@cs.fsu.edu 1276019Shines@cs.fsu.edudef format FloatCmp(fReg1, fReg2, *flags) {{ 1286019Shines@cs.fsu.edu code = calcFPCcCode % vars() 1296252Sgblack@eecs.umich.edu iop = InstObjParams(name, Name, 'PredOp', 1306243Sgblack@eecs.umich.edu {"code": code, 1316243Sgblack@eecs.umich.edu "predicate_test": predicateTest}, 1326243Sgblack@eecs.umich.edu flags) 1336019Shines@cs.fsu.edu header_output = BasicDeclare.subst(iop) 1346019Shines@cs.fsu.edu decoder_output = BasicConstructor.subst(iop) 1356019Shines@cs.fsu.edu decode_block = BasicDecode.subst(iop) 1366019Shines@cs.fsu.edu exec_output = FPAExecute.subst(iop) 1376019Shines@cs.fsu.edu}}; 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