fpop.isa revision 9699
15083Sgblack@eecs.umich.edu// Copyright (c) 2007 The Hewlett-Packard Development Company 29582Snilay@cs.wisc.edu// Copyright (c) 2012-2013 Mark D. Hill and David A. Wood 35083Sgblack@eecs.umich.edu// All rights reserved. 45083Sgblack@eecs.umich.edu// 57087Snate@binkert.org// The license below extends only to copyright in the software and shall 67087Snate@binkert.org// not be construed as granting a license to any other intellectual 77087Snate@binkert.org// property including but not limited to intellectual property relating 87087Snate@binkert.org// to a hardware implementation of the functionality of the software 97087Snate@binkert.org// licensed hereunder. You may use the software subject to the license 107087Snate@binkert.org// terms below provided that you ensure that this notice is replicated 117087Snate@binkert.org// unmodified and in its entirety in all distributions of the software, 127087Snate@binkert.org// modified or unmodified, in source code or in binary form. 135083Sgblack@eecs.umich.edu// 147087Snate@binkert.org// Redistribution and use in source and binary forms, with or without 157087Snate@binkert.org// modification, are permitted provided that the following conditions are 167087Snate@binkert.org// met: redistributions of source code must retain the above copyright 177087Snate@binkert.org// notice, this list of conditions and the following disclaimer; 187087Snate@binkert.org// redistributions in binary form must reproduce the above copyright 197087Snate@binkert.org// notice, this list of conditions and the following disclaimer in the 207087Snate@binkert.org// documentation and/or other materials provided with the distribution; 217087Snate@binkert.org// neither the name of the copyright holders nor the names of its 225083Sgblack@eecs.umich.edu// contributors may be used to endorse or promote products derived from 237087Snate@binkert.org// this software without specific prior written permission. 245083Sgblack@eecs.umich.edu// 255083Sgblack@eecs.umich.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 265083Sgblack@eecs.umich.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 275083Sgblack@eecs.umich.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 285083Sgblack@eecs.umich.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 295083Sgblack@eecs.umich.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 305083Sgblack@eecs.umich.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 315083Sgblack@eecs.umich.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 325083Sgblack@eecs.umich.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 335083Sgblack@eecs.umich.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 345083Sgblack@eecs.umich.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 355083Sgblack@eecs.umich.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 365083Sgblack@eecs.umich.edu// 375083Sgblack@eecs.umich.edu// Authors: Gabe Black 389582Snilay@cs.wisc.edu// Nilay Vaish 395083Sgblack@eecs.umich.edu 405083Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////////// 415083Sgblack@eecs.umich.edu// 425083Sgblack@eecs.umich.edu// FpOp Microop templates 435083Sgblack@eecs.umich.edu// 445083Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////////// 455083Sgblack@eecs.umich.edu 465083Sgblack@eecs.umich.edudef template MicroFpOpExecute {{ 475083Sgblack@eecs.umich.edu Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 485083Sgblack@eecs.umich.edu Trace::InstRecord *traceData) const 495083Sgblack@eecs.umich.edu { 505083Sgblack@eecs.umich.edu Fault fault = NoFault; 515083Sgblack@eecs.umich.edu 525083Sgblack@eecs.umich.edu DPRINTF(X86, "The data size is %d\n", dataSize); 535083Sgblack@eecs.umich.edu %(op_decl)s; 545083Sgblack@eecs.umich.edu %(op_rd)s; 555083Sgblack@eecs.umich.edu 565083Sgblack@eecs.umich.edu if(%(cond_check)s) 575083Sgblack@eecs.umich.edu { 585083Sgblack@eecs.umich.edu %(code)s; 595083Sgblack@eecs.umich.edu %(flag_code)s; 605083Sgblack@eecs.umich.edu %(top_code)s; 615083Sgblack@eecs.umich.edu } 625083Sgblack@eecs.umich.edu else 635083Sgblack@eecs.umich.edu { 645083Sgblack@eecs.umich.edu %(else_code)s; 655083Sgblack@eecs.umich.edu } 665083Sgblack@eecs.umich.edu 675083Sgblack@eecs.umich.edu //Write the resulting state to the execution context 685083Sgblack@eecs.umich.edu if(fault == NoFault) 695083Sgblack@eecs.umich.edu { 705083Sgblack@eecs.umich.edu %(op_wb)s; 715083Sgblack@eecs.umich.edu } 725083Sgblack@eecs.umich.edu return fault; 735083Sgblack@eecs.umich.edu } 745083Sgblack@eecs.umich.edu}}; 755083Sgblack@eecs.umich.edu 765083Sgblack@eecs.umich.edudef template MicroFpOpDeclare {{ 775083Sgblack@eecs.umich.edu class %(class_name)s : public %(base_class)s 785083Sgblack@eecs.umich.edu { 795083Sgblack@eecs.umich.edu public: 805083Sgblack@eecs.umich.edu %(class_name)s(ExtMachInst _machInst, 817620Sgblack@eecs.umich.edu const char * instMnem, uint64_t setFlags, 826345Sgblack@eecs.umich.edu InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest, 835083Sgblack@eecs.umich.edu uint8_t _dataSize, int8_t _spm); 845083Sgblack@eecs.umich.edu 855083Sgblack@eecs.umich.edu %(BasicExecDeclare)s 865083Sgblack@eecs.umich.edu }; 875083Sgblack@eecs.umich.edu}}; 885083Sgblack@eecs.umich.edu 895083Sgblack@eecs.umich.edudef template MicroFpOpConstructor {{ 905083Sgblack@eecs.umich.edu inline %(class_name)s::%(class_name)s( 917620Sgblack@eecs.umich.edu ExtMachInst machInst, const char * instMnem, uint64_t setFlags, 926345Sgblack@eecs.umich.edu InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest, 935083Sgblack@eecs.umich.edu uint8_t _dataSize, int8_t _spm) : 947620Sgblack@eecs.umich.edu %(base_class)s(machInst, "%(mnemonic)s", instMnem, setFlags, 955083Sgblack@eecs.umich.edu _src1, _src2, _dest, _dataSize, _spm, 965083Sgblack@eecs.umich.edu %(op_class)s) 975083Sgblack@eecs.umich.edu { 987626Sgblack@eecs.umich.edu %(constructor)s; 995083Sgblack@eecs.umich.edu } 1005083Sgblack@eecs.umich.edu}}; 1015083Sgblack@eecs.umich.edu 1025083Sgblack@eecs.umich.edulet {{ 1035083Sgblack@eecs.umich.edu # Make these empty strings so that concatenating onto 1045083Sgblack@eecs.umich.edu # them will always work. 1055083Sgblack@eecs.umich.edu header_output = "" 1065083Sgblack@eecs.umich.edu decoder_output = "" 1075083Sgblack@eecs.umich.edu exec_output = "" 1085083Sgblack@eecs.umich.edu 1095083Sgblack@eecs.umich.edu class FpOpMeta(type): 1105083Sgblack@eecs.umich.edu def buildCppClasses(self, name, Name, suffix, \ 1119699Snilay@cs.wisc.edu code, flag_code, cond_check, else_code, op_class): 1125083Sgblack@eecs.umich.edu 1135083Sgblack@eecs.umich.edu # Globals to stick the output in 1145083Sgblack@eecs.umich.edu global header_output 1155083Sgblack@eecs.umich.edu global decoder_output 1165083Sgblack@eecs.umich.edu global exec_output 1175083Sgblack@eecs.umich.edu 1185083Sgblack@eecs.umich.edu # Stick all the code together so it can be searched at once 1195083Sgblack@eecs.umich.edu allCode = "|".join((code, flag_code, cond_check, else_code)) 1205083Sgblack@eecs.umich.edu 1215083Sgblack@eecs.umich.edu # If there's something optional to do with flags, generate 1225083Sgblack@eecs.umich.edu # a version without it and fix up this version to use it. 1235083Sgblack@eecs.umich.edu if flag_code is not "" or cond_check is not "true": 1245083Sgblack@eecs.umich.edu self.buildCppClasses(name, Name, suffix, 1259699Snilay@cs.wisc.edu code, "", "true", else_code, op_class) 1265083Sgblack@eecs.umich.edu suffix = "Flags" + suffix 1275083Sgblack@eecs.umich.edu 1285083Sgblack@eecs.umich.edu base = "X86ISA::FpOp" 1295083Sgblack@eecs.umich.edu 1305083Sgblack@eecs.umich.edu # Get everything ready for the substitution 1315083Sgblack@eecs.umich.edu iop_top = InstObjParams(name, Name + suffix + "Top", base, 1325083Sgblack@eecs.umich.edu {"code" : code, 1335083Sgblack@eecs.umich.edu "flag_code" : flag_code, 1345083Sgblack@eecs.umich.edu "cond_check" : cond_check, 1355083Sgblack@eecs.umich.edu "else_code" : else_code, 1369699Snilay@cs.wisc.edu "top_code" : "TOP = (TOP + spm + 8) % 8;", 1379699Snilay@cs.wisc.edu "op_class" : op_class}) 1385083Sgblack@eecs.umich.edu iop = InstObjParams(name, Name + suffix, base, 1395083Sgblack@eecs.umich.edu {"code" : code, 1405083Sgblack@eecs.umich.edu "flag_code" : flag_code, 1415083Sgblack@eecs.umich.edu "cond_check" : cond_check, 1425083Sgblack@eecs.umich.edu "else_code" : else_code, 1439699Snilay@cs.wisc.edu "top_code" : ";", 1449699Snilay@cs.wisc.edu "op_class" : op_class}) 1455083Sgblack@eecs.umich.edu 1465083Sgblack@eecs.umich.edu # Generate the actual code (finally!) 1475083Sgblack@eecs.umich.edu header_output += MicroFpOpDeclare.subst(iop_top) 1485083Sgblack@eecs.umich.edu decoder_output += MicroFpOpConstructor.subst(iop_top) 1495083Sgblack@eecs.umich.edu exec_output += MicroFpOpExecute.subst(iop_top) 1505083Sgblack@eecs.umich.edu header_output += MicroFpOpDeclare.subst(iop) 1515083Sgblack@eecs.umich.edu decoder_output += MicroFpOpConstructor.subst(iop) 1525083Sgblack@eecs.umich.edu exec_output += MicroFpOpExecute.subst(iop) 1535083Sgblack@eecs.umich.edu 1545083Sgblack@eecs.umich.edu 1555083Sgblack@eecs.umich.edu def __new__(mcls, Name, bases, dict): 1565083Sgblack@eecs.umich.edu abstract = False 1575083Sgblack@eecs.umich.edu name = Name.lower() 1585083Sgblack@eecs.umich.edu if "abstract" in dict: 1595083Sgblack@eecs.umich.edu abstract = dict['abstract'] 1605083Sgblack@eecs.umich.edu del dict['abstract'] 1615083Sgblack@eecs.umich.edu 1625083Sgblack@eecs.umich.edu cls = super(FpOpMeta, mcls).__new__(mcls, Name, bases, dict) 1635083Sgblack@eecs.umich.edu if not abstract: 1645083Sgblack@eecs.umich.edu cls.className = Name 1655083Sgblack@eecs.umich.edu cls.mnemonic = name 1665083Sgblack@eecs.umich.edu code = cls.code 1675083Sgblack@eecs.umich.edu flag_code = cls.flag_code 1685083Sgblack@eecs.umich.edu cond_check = cls.cond_check 1695083Sgblack@eecs.umich.edu else_code = cls.else_code 1709699Snilay@cs.wisc.edu op_class = cls.op_class 1715083Sgblack@eecs.umich.edu 1725083Sgblack@eecs.umich.edu # Set up the C++ classes 1735083Sgblack@eecs.umich.edu mcls.buildCppClasses(cls, name, Name, "", 1749699Snilay@cs.wisc.edu code, flag_code, cond_check, else_code, op_class) 1755083Sgblack@eecs.umich.edu 1765083Sgblack@eecs.umich.edu # Hook into the microassembler dict 1775083Sgblack@eecs.umich.edu global microopClasses 1785083Sgblack@eecs.umich.edu microopClasses[name] = cls 1795083Sgblack@eecs.umich.edu 1805083Sgblack@eecs.umich.edu return cls 1815083Sgblack@eecs.umich.edu 1829371Snilay@cs.wisc.edu class FpUnaryOp(X86Microop): 1839371Snilay@cs.wisc.edu __metaclass__ = FpOpMeta 1849371Snilay@cs.wisc.edu # This class itself doesn't act as a microop 1859371Snilay@cs.wisc.edu abstract = True 1865083Sgblack@eecs.umich.edu 1879371Snilay@cs.wisc.edu # Default template parameter values 1889371Snilay@cs.wisc.edu flag_code = "" 1899371Snilay@cs.wisc.edu cond_check = "true" 1909371Snilay@cs.wisc.edu else_code = ";" 1919699Snilay@cs.wisc.edu op_class = "FloatAddOp" 1929371Snilay@cs.wisc.edu 1939371Snilay@cs.wisc.edu def __init__(self, dest, src1, spm=0, \ 1949371Snilay@cs.wisc.edu SetStatus=False, dataSize="env.dataSize"): 1959371Snilay@cs.wisc.edu self.dest = dest 1969371Snilay@cs.wisc.edu self.src1 = src1 1979371Snilay@cs.wisc.edu self.src2 = "InstRegIndex(0)" 1989371Snilay@cs.wisc.edu self.spm = spm 1999371Snilay@cs.wisc.edu self.dataSize = dataSize 2009371Snilay@cs.wisc.edu if SetStatus: 2019371Snilay@cs.wisc.edu self.className += "Flags" 2029371Snilay@cs.wisc.edu if spm: 2039371Snilay@cs.wisc.edu self.className += "Top" 2049371Snilay@cs.wisc.edu 2059371Snilay@cs.wisc.edu def getAllocator(self, microFlags): 2069371Snilay@cs.wisc.edu return '''new %(class_name)s(machInst, macrocodeBlock, 2079371Snilay@cs.wisc.edu %(flags)s, %(src1)s, %(src2)s, %(dest)s, 2089371Snilay@cs.wisc.edu %(dataSize)s, %(spm)d)''' % { 2099371Snilay@cs.wisc.edu "class_name" : self.className, 2109371Snilay@cs.wisc.edu "flags" : self.microFlagsText(microFlags), 2119371Snilay@cs.wisc.edu "src1" : self.src1, "src2" : self.src2, 2129371Snilay@cs.wisc.edu "dest" : self.dest, 2139371Snilay@cs.wisc.edu "dataSize" : self.dataSize, 2149371Snilay@cs.wisc.edu "spm" : self.spm} 2159371Snilay@cs.wisc.edu 2169371Snilay@cs.wisc.edu class FpBinaryOp(X86Microop): 2175083Sgblack@eecs.umich.edu __metaclass__ = FpOpMeta 2185083Sgblack@eecs.umich.edu # This class itself doesn't act as a microop 2195083Sgblack@eecs.umich.edu abstract = True 2205083Sgblack@eecs.umich.edu 2215083Sgblack@eecs.umich.edu # Default template parameter values 2225083Sgblack@eecs.umich.edu flag_code = "" 2235083Sgblack@eecs.umich.edu cond_check = "true" 2245083Sgblack@eecs.umich.edu else_code = ";" 2259699Snilay@cs.wisc.edu op_class = "FloatAddOp" 2265083Sgblack@eecs.umich.edu 2275083Sgblack@eecs.umich.edu def __init__(self, dest, src1, src2, spm=0, \ 2285083Sgblack@eecs.umich.edu SetStatus=False, dataSize="env.dataSize"): 2295083Sgblack@eecs.umich.edu self.dest = dest 2305083Sgblack@eecs.umich.edu self.src1 = src1 2315083Sgblack@eecs.umich.edu self.src2 = src2 2325083Sgblack@eecs.umich.edu self.spm = spm 2335083Sgblack@eecs.umich.edu self.dataSize = dataSize 2345083Sgblack@eecs.umich.edu if SetStatus: 2355083Sgblack@eecs.umich.edu self.className += "Flags" 2365083Sgblack@eecs.umich.edu if spm: 2375083Sgblack@eecs.umich.edu self.className += "Top" 2385083Sgblack@eecs.umich.edu 2397620Sgblack@eecs.umich.edu def getAllocator(self, microFlags): 2407620Sgblack@eecs.umich.edu return '''new %(class_name)s(machInst, macrocodeBlock, 2415083Sgblack@eecs.umich.edu %(flags)s, %(src1)s, %(src2)s, %(dest)s, 2425083Sgblack@eecs.umich.edu %(dataSize)s, %(spm)d)''' % { 2435083Sgblack@eecs.umich.edu "class_name" : self.className, 2445083Sgblack@eecs.umich.edu "flags" : self.microFlagsText(microFlags), 2455083Sgblack@eecs.umich.edu "src1" : self.src1, "src2" : self.src2, 2465083Sgblack@eecs.umich.edu "dest" : self.dest, 2475083Sgblack@eecs.umich.edu "dataSize" : self.dataSize, 2485083Sgblack@eecs.umich.edu "spm" : self.spm} 2495083Sgblack@eecs.umich.edu 2509371Snilay@cs.wisc.edu class Movfp(FpUnaryOp): 2518588Sgblack@eecs.umich.edu code = 'FpDestReg_uqw = FpSrcReg1_uqw;' 2528588Sgblack@eecs.umich.edu else_code = 'FpDestReg_uqw = FpDestReg_uqw;' 2539211Snilay@cs.wisc.edu cond_check = "checkCondition(ccFlagBits | cfofBits | dfBit | \ 2549211Snilay@cs.wisc.edu ecfBit | ezfBit, src2)" 2555083Sgblack@eecs.umich.edu 2569371Snilay@cs.wisc.edu class Xorfp(FpBinaryOp): 2578588Sgblack@eecs.umich.edu code = 'FpDestReg_uqw = FpSrcReg1_uqw ^ FpSrcReg2_uqw;' 2585083Sgblack@eecs.umich.edu 2599371Snilay@cs.wisc.edu class Sqrtfp(FpBinaryOp): 2605083Sgblack@eecs.umich.edu code = 'FpDestReg = sqrt(FpSrcReg2);' 2619699Snilay@cs.wisc.edu op_class = 'FloatSqrtOp' 2625083Sgblack@eecs.umich.edu 2639371Snilay@cs.wisc.edu class Cosfp(FpUnaryOp): 2649371Snilay@cs.wisc.edu code = 'FpDestReg = cos(FpSrcReg1);' 2659699Snilay@cs.wisc.edu op_class = 'FloatSqrtOp' 2669371Snilay@cs.wisc.edu 2679371Snilay@cs.wisc.edu class Sinfp(FpUnaryOp): 2689371Snilay@cs.wisc.edu code = 'FpDestReg = sin(FpSrcReg1);' 2699699Snilay@cs.wisc.edu op_class = 'FloatSqrtOp' 2709371Snilay@cs.wisc.edu 2719582Snilay@cs.wisc.edu class Tanfp(FpUnaryOp): 2729582Snilay@cs.wisc.edu code = 'FpDestReg = tan(FpSrcReg1);' 2739699Snilay@cs.wisc.edu op_class = 'FloatSqrtOp' 2749582Snilay@cs.wisc.edu 2759371Snilay@cs.wisc.edu 2765083Sgblack@eecs.umich.edu # Conversion microops 2779371Snilay@cs.wisc.edu class ConvOp(FpBinaryOp): 2785083Sgblack@eecs.umich.edu abstract = True 2799699Snilay@cs.wisc.edu op_class = 'FloatCvtOp' 2805083Sgblack@eecs.umich.edu def __init__(self, dest, src1): 2816345Sgblack@eecs.umich.edu super(ConvOp, self).__init__(dest, src1, \ 2826345Sgblack@eecs.umich.edu "InstRegIndex(FLOATREG_MICROFP0)") 2835083Sgblack@eecs.umich.edu 2845083Sgblack@eecs.umich.edu # These probably shouldn't look at the ExtMachInst directly to figure 2855083Sgblack@eecs.umich.edu # out what size to use and should instead delegate that to the macroop's 2865083Sgblack@eecs.umich.edu # constructor. That would be more efficient, and it would make the 2875083Sgblack@eecs.umich.edu # microops a little more modular. 2885083Sgblack@eecs.umich.edu class cvtf_i2d(ConvOp): 2895083Sgblack@eecs.umich.edu code = ''' 2905083Sgblack@eecs.umich.edu X86IntReg intReg = SSrcReg1; 2915083Sgblack@eecs.umich.edu if (REX_W) 2925083Sgblack@eecs.umich.edu FpDestReg = intReg.SR; 2935083Sgblack@eecs.umich.edu else 2945083Sgblack@eecs.umich.edu FpDestReg = intReg.SE; 2955083Sgblack@eecs.umich.edu ''' 2965083Sgblack@eecs.umich.edu 2975083Sgblack@eecs.umich.edu class cvtf_i2d_hi(ConvOp): 2985083Sgblack@eecs.umich.edu code = 'FpDestReg = bits(SSrcReg1, 63, 32);' 2995083Sgblack@eecs.umich.edu 3005083Sgblack@eecs.umich.edu class cvtf_d2i(ConvOp): 3015083Sgblack@eecs.umich.edu code = ''' 3025083Sgblack@eecs.umich.edu int64_t intSrcReg1 = static_cast<int64_t>(FpSrcReg1); 3035083Sgblack@eecs.umich.edu if (REX_W) 3045083Sgblack@eecs.umich.edu SDestReg = intSrcReg1; 3055083Sgblack@eecs.umich.edu else 3065083Sgblack@eecs.umich.edu SDestReg = merge(SDestReg, intSrcReg1, 4); 3075083Sgblack@eecs.umich.edu ''' 3085083Sgblack@eecs.umich.edu 3095083Sgblack@eecs.umich.edu # These need to consider size at some point. They'll always use doubles 3105083Sgblack@eecs.umich.edu # for the moment. 3119371Snilay@cs.wisc.edu class addfp(FpBinaryOp): 3125083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 + FpSrcReg2;' 3135083Sgblack@eecs.umich.edu 3149371Snilay@cs.wisc.edu class mulfp(FpBinaryOp): 3155083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 * FpSrcReg2;' 3169699Snilay@cs.wisc.edu op_class = 'FloatMultOp' 3175083Sgblack@eecs.umich.edu 3189371Snilay@cs.wisc.edu class divfp(FpBinaryOp): 3195083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 / FpSrcReg2;' 3209699Snilay@cs.wisc.edu op_class = 'FloatDivOp' 3215083Sgblack@eecs.umich.edu 3229371Snilay@cs.wisc.edu class subfp(FpBinaryOp): 3235083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 - FpSrcReg2;' 3245083Sgblack@eecs.umich.edu 3259582Snilay@cs.wisc.edu class Yl2xFp(FpBinaryOp): 3269582Snilay@cs.wisc.edu code = ''' 3279582Snilay@cs.wisc.edu FpDestReg = FpSrcReg2 * (log(FpSrcReg1) / log(2)); 3289582Snilay@cs.wisc.edu ''' 3299699Snilay@cs.wisc.edu op_class = 'FloatSqrtOp' 3309582Snilay@cs.wisc.edu 3319582Snilay@cs.wisc.edu class PremFp(FpBinaryOp): 3329582Snilay@cs.wisc.edu code = ''' 3339582Snilay@cs.wisc.edu FpDestReg = fmod(FpSrcReg1, FpSrcReg2); 3349582Snilay@cs.wisc.edu DPRINTF(X86, "src1: %lf, src2: %lf, dest: %lf\\n", FpSrcReg1, FpSrcReg2, FpDestReg); 3359582Snilay@cs.wisc.edu ''' 3369699Snilay@cs.wisc.edu op_class = 'FloatDivOp' 3379582Snilay@cs.wisc.edu 3389371Snilay@cs.wisc.edu class Compfp(FpBinaryOp): 3395083Sgblack@eecs.umich.edu def __init__(self, src1, src2, spm=0, setStatus=False, \ 3405083Sgblack@eecs.umich.edu dataSize="env.dataSize"): 3416345Sgblack@eecs.umich.edu super(Compfp, self).__init__("InstRegIndex(FLOATREG_MICROFP0)", \ 3425083Sgblack@eecs.umich.edu src1, src2, spm, setStatus, dataSize) 3435083Sgblack@eecs.umich.edu # This class sets the condition codes in rflags according to the 3445083Sgblack@eecs.umich.edu # rules for comparing floating point. 3455083Sgblack@eecs.umich.edu code = ''' 3465083Sgblack@eecs.umich.edu // ZF PF CF 3475083Sgblack@eecs.umich.edu // Unordered 1 1 1 3485083Sgblack@eecs.umich.edu // Greater than 0 0 0 3495083Sgblack@eecs.umich.edu // Less than 0 0 1 3505083Sgblack@eecs.umich.edu // Equal 1 0 0 3515083Sgblack@eecs.umich.edu // OF = SF = AF = 0 3529010Snilay@cs.wisc.edu ccFlagBits = ccFlagBits & ~(SFBit | AFBit | ZFBit | PFBit); 3539010Snilay@cs.wisc.edu cfofBits = cfofBits & ~(OFBit | CFBit); 3549010Snilay@cs.wisc.edu 3559010Snilay@cs.wisc.edu if (std::isnan(FpSrcReg1) || std::isnan(FpSrcReg2)) { 3569010Snilay@cs.wisc.edu ccFlagBits = ccFlagBits | (ZFBit | PFBit); 3579010Snilay@cs.wisc.edu cfofBits = cfofBits | CFBit; 3589010Snilay@cs.wisc.edu } 3595083Sgblack@eecs.umich.edu else if(FpSrcReg1 < FpSrcReg2) 3609010Snilay@cs.wisc.edu cfofBits = cfofBits | CFBit; 3615083Sgblack@eecs.umich.edu else if(FpSrcReg1 == FpSrcReg2) 3625083Sgblack@eecs.umich.edu ccFlagBits = ccFlagBits | ZFBit; 3635083Sgblack@eecs.umich.edu ''' 3649699Snilay@cs.wisc.edu op_class = 'FloatCmpOp' 3659470Snilay@cs.wisc.edu 3669470Snilay@cs.wisc.edu class absfp(FpUnaryOp): 3679470Snilay@cs.wisc.edu code = 'FpDestReg = fabs(FpSrcReg1);' 3689470Snilay@cs.wisc.edu flag_code = 'FSW &= (~CC1Bit);' 3699470Snilay@cs.wisc.edu 3709470Snilay@cs.wisc.edu class chsfp(FpUnaryOp): 3719470Snilay@cs.wisc.edu code = 'FpDestReg = (-1) * (FpSrcReg1);' 3729470Snilay@cs.wisc.edu flag_code = 'FSW &= (~CC1Bit);' 3735083Sgblack@eecs.umich.edu}}; 374