fpop.isa revision 9470
15083Sgblack@eecs.umich.edu// Copyright (c) 2007 The Hewlett-Packard Development Company 25083Sgblack@eecs.umich.edu// All rights reserved. 35083Sgblack@eecs.umich.edu// 47087Snate@binkert.org// The license below extends only to copyright in the software and shall 57087Snate@binkert.org// not be construed as granting a license to any other intellectual 67087Snate@binkert.org// property including but not limited to intellectual property relating 77087Snate@binkert.org// to a hardware implementation of the functionality of the software 87087Snate@binkert.org// licensed hereunder. You may use the software subject to the license 97087Snate@binkert.org// terms below provided that you ensure that this notice is replicated 107087Snate@binkert.org// unmodified and in its entirety in all distributions of the software, 117087Snate@binkert.org// modified or unmodified, in source code or in binary form. 125083Sgblack@eecs.umich.edu// 137087Snate@binkert.org// Redistribution and use in source and binary forms, with or without 147087Snate@binkert.org// modification, are permitted provided that the following conditions are 157087Snate@binkert.org// met: redistributions of source code must retain the above copyright 167087Snate@binkert.org// notice, this list of conditions and the following disclaimer; 177087Snate@binkert.org// redistributions in binary form must reproduce the above copyright 187087Snate@binkert.org// notice, this list of conditions and the following disclaimer in the 197087Snate@binkert.org// documentation and/or other materials provided with the distribution; 207087Snate@binkert.org// neither the name of the copyright holders nor the names of its 215083Sgblack@eecs.umich.edu// contributors may be used to endorse or promote products derived from 227087Snate@binkert.org// this software without specific prior written permission. 235083Sgblack@eecs.umich.edu// 245083Sgblack@eecs.umich.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 255083Sgblack@eecs.umich.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 265083Sgblack@eecs.umich.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 275083Sgblack@eecs.umich.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 285083Sgblack@eecs.umich.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 295083Sgblack@eecs.umich.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 305083Sgblack@eecs.umich.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 315083Sgblack@eecs.umich.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 325083Sgblack@eecs.umich.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 335083Sgblack@eecs.umich.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 345083Sgblack@eecs.umich.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 355083Sgblack@eecs.umich.edu// 365083Sgblack@eecs.umich.edu// Authors: Gabe Black 375083Sgblack@eecs.umich.edu 385083Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////////// 395083Sgblack@eecs.umich.edu// 405083Sgblack@eecs.umich.edu// FpOp Microop templates 415083Sgblack@eecs.umich.edu// 425083Sgblack@eecs.umich.edu////////////////////////////////////////////////////////////////////////// 435083Sgblack@eecs.umich.edu 445083Sgblack@eecs.umich.edudef template MicroFpOpExecute {{ 455083Sgblack@eecs.umich.edu Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 465083Sgblack@eecs.umich.edu Trace::InstRecord *traceData) const 475083Sgblack@eecs.umich.edu { 485083Sgblack@eecs.umich.edu Fault fault = NoFault; 495083Sgblack@eecs.umich.edu 505083Sgblack@eecs.umich.edu DPRINTF(X86, "The data size is %d\n", dataSize); 515083Sgblack@eecs.umich.edu %(op_decl)s; 525083Sgblack@eecs.umich.edu %(op_rd)s; 535083Sgblack@eecs.umich.edu 545083Sgblack@eecs.umich.edu if(%(cond_check)s) 555083Sgblack@eecs.umich.edu { 565083Sgblack@eecs.umich.edu %(code)s; 575083Sgblack@eecs.umich.edu %(flag_code)s; 585083Sgblack@eecs.umich.edu %(top_code)s; 595083Sgblack@eecs.umich.edu } 605083Sgblack@eecs.umich.edu else 615083Sgblack@eecs.umich.edu { 625083Sgblack@eecs.umich.edu %(else_code)s; 635083Sgblack@eecs.umich.edu } 645083Sgblack@eecs.umich.edu 655083Sgblack@eecs.umich.edu //Write the resulting state to the execution context 665083Sgblack@eecs.umich.edu if(fault == NoFault) 675083Sgblack@eecs.umich.edu { 685083Sgblack@eecs.umich.edu %(op_wb)s; 695083Sgblack@eecs.umich.edu } 705083Sgblack@eecs.umich.edu return fault; 715083Sgblack@eecs.umich.edu } 725083Sgblack@eecs.umich.edu}}; 735083Sgblack@eecs.umich.edu 745083Sgblack@eecs.umich.edudef template MicroFpOpDeclare {{ 755083Sgblack@eecs.umich.edu class %(class_name)s : public %(base_class)s 765083Sgblack@eecs.umich.edu { 775083Sgblack@eecs.umich.edu public: 785083Sgblack@eecs.umich.edu %(class_name)s(ExtMachInst _machInst, 797620Sgblack@eecs.umich.edu const char * instMnem, uint64_t setFlags, 806345Sgblack@eecs.umich.edu InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest, 815083Sgblack@eecs.umich.edu uint8_t _dataSize, int8_t _spm); 825083Sgblack@eecs.umich.edu 835083Sgblack@eecs.umich.edu %(BasicExecDeclare)s 845083Sgblack@eecs.umich.edu }; 855083Sgblack@eecs.umich.edu}}; 865083Sgblack@eecs.umich.edu 875083Sgblack@eecs.umich.edudef template MicroFpOpConstructor {{ 885083Sgblack@eecs.umich.edu inline %(class_name)s::%(class_name)s( 897620Sgblack@eecs.umich.edu ExtMachInst machInst, const char * instMnem, uint64_t setFlags, 906345Sgblack@eecs.umich.edu InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest, 915083Sgblack@eecs.umich.edu uint8_t _dataSize, int8_t _spm) : 927620Sgblack@eecs.umich.edu %(base_class)s(machInst, "%(mnemonic)s", instMnem, setFlags, 935083Sgblack@eecs.umich.edu _src1, _src2, _dest, _dataSize, _spm, 945083Sgblack@eecs.umich.edu %(op_class)s) 955083Sgblack@eecs.umich.edu { 967626Sgblack@eecs.umich.edu %(constructor)s; 975083Sgblack@eecs.umich.edu } 985083Sgblack@eecs.umich.edu}}; 995083Sgblack@eecs.umich.edu 1005083Sgblack@eecs.umich.edulet {{ 1015083Sgblack@eecs.umich.edu # Make these empty strings so that concatenating onto 1025083Sgblack@eecs.umich.edu # them will always work. 1035083Sgblack@eecs.umich.edu header_output = "" 1045083Sgblack@eecs.umich.edu decoder_output = "" 1055083Sgblack@eecs.umich.edu exec_output = "" 1065083Sgblack@eecs.umich.edu 1075083Sgblack@eecs.umich.edu class FpOpMeta(type): 1085083Sgblack@eecs.umich.edu def buildCppClasses(self, name, Name, suffix, \ 1095083Sgblack@eecs.umich.edu code, flag_code, cond_check, else_code): 1105083Sgblack@eecs.umich.edu 1115083Sgblack@eecs.umich.edu # Globals to stick the output in 1125083Sgblack@eecs.umich.edu global header_output 1135083Sgblack@eecs.umich.edu global decoder_output 1145083Sgblack@eecs.umich.edu global exec_output 1155083Sgblack@eecs.umich.edu 1165083Sgblack@eecs.umich.edu # Stick all the code together so it can be searched at once 1175083Sgblack@eecs.umich.edu allCode = "|".join((code, flag_code, cond_check, else_code)) 1185083Sgblack@eecs.umich.edu 1195083Sgblack@eecs.umich.edu # If there's something optional to do with flags, generate 1205083Sgblack@eecs.umich.edu # a version without it and fix up this version to use it. 1215083Sgblack@eecs.umich.edu if flag_code is not "" or cond_check is not "true": 1225083Sgblack@eecs.umich.edu self.buildCppClasses(name, Name, suffix, 1235083Sgblack@eecs.umich.edu code, "", "true", else_code) 1245083Sgblack@eecs.umich.edu suffix = "Flags" + suffix 1255083Sgblack@eecs.umich.edu 1265083Sgblack@eecs.umich.edu base = "X86ISA::FpOp" 1275083Sgblack@eecs.umich.edu 1285083Sgblack@eecs.umich.edu # Get everything ready for the substitution 1295083Sgblack@eecs.umich.edu iop_top = InstObjParams(name, Name + suffix + "Top", base, 1305083Sgblack@eecs.umich.edu {"code" : code, 1315083Sgblack@eecs.umich.edu "flag_code" : flag_code, 1325083Sgblack@eecs.umich.edu "cond_check" : cond_check, 1335083Sgblack@eecs.umich.edu "else_code" : else_code, 1345083Sgblack@eecs.umich.edu "top_code" : "TOP = (TOP + spm + 8) % 8;"}) 1355083Sgblack@eecs.umich.edu iop = InstObjParams(name, Name + suffix, base, 1365083Sgblack@eecs.umich.edu {"code" : code, 1375083Sgblack@eecs.umich.edu "flag_code" : flag_code, 1385083Sgblack@eecs.umich.edu "cond_check" : cond_check, 1395083Sgblack@eecs.umich.edu "else_code" : else_code, 1405083Sgblack@eecs.umich.edu "top_code" : ";"}) 1415083Sgblack@eecs.umich.edu 1425083Sgblack@eecs.umich.edu # Generate the actual code (finally!) 1435083Sgblack@eecs.umich.edu header_output += MicroFpOpDeclare.subst(iop_top) 1445083Sgblack@eecs.umich.edu decoder_output += MicroFpOpConstructor.subst(iop_top) 1455083Sgblack@eecs.umich.edu exec_output += MicroFpOpExecute.subst(iop_top) 1465083Sgblack@eecs.umich.edu header_output += MicroFpOpDeclare.subst(iop) 1475083Sgblack@eecs.umich.edu decoder_output += MicroFpOpConstructor.subst(iop) 1485083Sgblack@eecs.umich.edu exec_output += MicroFpOpExecute.subst(iop) 1495083Sgblack@eecs.umich.edu 1505083Sgblack@eecs.umich.edu 1515083Sgblack@eecs.umich.edu def __new__(mcls, Name, bases, dict): 1525083Sgblack@eecs.umich.edu abstract = False 1535083Sgblack@eecs.umich.edu name = Name.lower() 1545083Sgblack@eecs.umich.edu if "abstract" in dict: 1555083Sgblack@eecs.umich.edu abstract = dict['abstract'] 1565083Sgblack@eecs.umich.edu del dict['abstract'] 1575083Sgblack@eecs.umich.edu 1585083Sgblack@eecs.umich.edu cls = super(FpOpMeta, mcls).__new__(mcls, Name, bases, dict) 1595083Sgblack@eecs.umich.edu if not abstract: 1605083Sgblack@eecs.umich.edu cls.className = Name 1615083Sgblack@eecs.umich.edu cls.mnemonic = name 1625083Sgblack@eecs.umich.edu code = cls.code 1635083Sgblack@eecs.umich.edu flag_code = cls.flag_code 1645083Sgblack@eecs.umich.edu cond_check = cls.cond_check 1655083Sgblack@eecs.umich.edu else_code = cls.else_code 1665083Sgblack@eecs.umich.edu 1675083Sgblack@eecs.umich.edu # Set up the C++ classes 1685083Sgblack@eecs.umich.edu mcls.buildCppClasses(cls, name, Name, "", 1695083Sgblack@eecs.umich.edu code, flag_code, cond_check, else_code) 1705083Sgblack@eecs.umich.edu 1715083Sgblack@eecs.umich.edu # Hook into the microassembler dict 1725083Sgblack@eecs.umich.edu global microopClasses 1735083Sgblack@eecs.umich.edu microopClasses[name] = cls 1745083Sgblack@eecs.umich.edu 1755083Sgblack@eecs.umich.edu return cls 1765083Sgblack@eecs.umich.edu 1779371Snilay@cs.wisc.edu class FpUnaryOp(X86Microop): 1789371Snilay@cs.wisc.edu __metaclass__ = FpOpMeta 1799371Snilay@cs.wisc.edu # This class itself doesn't act as a microop 1809371Snilay@cs.wisc.edu abstract = True 1815083Sgblack@eecs.umich.edu 1829371Snilay@cs.wisc.edu # Default template parameter values 1839371Snilay@cs.wisc.edu flag_code = "" 1849371Snilay@cs.wisc.edu cond_check = "true" 1859371Snilay@cs.wisc.edu else_code = ";" 1869371Snilay@cs.wisc.edu 1879371Snilay@cs.wisc.edu def __init__(self, dest, src1, spm=0, \ 1889371Snilay@cs.wisc.edu SetStatus=False, dataSize="env.dataSize"): 1899371Snilay@cs.wisc.edu self.dest = dest 1909371Snilay@cs.wisc.edu self.src1 = src1 1919371Snilay@cs.wisc.edu self.src2 = "InstRegIndex(0)" 1929371Snilay@cs.wisc.edu self.spm = spm 1939371Snilay@cs.wisc.edu self.dataSize = dataSize 1949371Snilay@cs.wisc.edu if SetStatus: 1959371Snilay@cs.wisc.edu self.className += "Flags" 1969371Snilay@cs.wisc.edu if spm: 1979371Snilay@cs.wisc.edu self.className += "Top" 1989371Snilay@cs.wisc.edu 1999371Snilay@cs.wisc.edu def getAllocator(self, microFlags): 2009371Snilay@cs.wisc.edu return '''new %(class_name)s(machInst, macrocodeBlock, 2019371Snilay@cs.wisc.edu %(flags)s, %(src1)s, %(src2)s, %(dest)s, 2029371Snilay@cs.wisc.edu %(dataSize)s, %(spm)d)''' % { 2039371Snilay@cs.wisc.edu "class_name" : self.className, 2049371Snilay@cs.wisc.edu "flags" : self.microFlagsText(microFlags), 2059371Snilay@cs.wisc.edu "src1" : self.src1, "src2" : self.src2, 2069371Snilay@cs.wisc.edu "dest" : self.dest, 2079371Snilay@cs.wisc.edu "dataSize" : self.dataSize, 2089371Snilay@cs.wisc.edu "spm" : self.spm} 2099371Snilay@cs.wisc.edu 2109371Snilay@cs.wisc.edu class FpBinaryOp(X86Microop): 2115083Sgblack@eecs.umich.edu __metaclass__ = FpOpMeta 2125083Sgblack@eecs.umich.edu # This class itself doesn't act as a microop 2135083Sgblack@eecs.umich.edu abstract = True 2145083Sgblack@eecs.umich.edu 2155083Sgblack@eecs.umich.edu # Default template parameter values 2165083Sgblack@eecs.umich.edu flag_code = "" 2175083Sgblack@eecs.umich.edu cond_check = "true" 2185083Sgblack@eecs.umich.edu else_code = ";" 2195083Sgblack@eecs.umich.edu 2205083Sgblack@eecs.umich.edu def __init__(self, dest, src1, src2, spm=0, \ 2215083Sgblack@eecs.umich.edu SetStatus=False, dataSize="env.dataSize"): 2225083Sgblack@eecs.umich.edu self.dest = dest 2235083Sgblack@eecs.umich.edu self.src1 = src1 2245083Sgblack@eecs.umich.edu self.src2 = src2 2255083Sgblack@eecs.umich.edu self.spm = spm 2265083Sgblack@eecs.umich.edu self.dataSize = dataSize 2275083Sgblack@eecs.umich.edu if SetStatus: 2285083Sgblack@eecs.umich.edu self.className += "Flags" 2295083Sgblack@eecs.umich.edu if spm: 2305083Sgblack@eecs.umich.edu self.className += "Top" 2315083Sgblack@eecs.umich.edu 2327620Sgblack@eecs.umich.edu def getAllocator(self, microFlags): 2337620Sgblack@eecs.umich.edu return '''new %(class_name)s(machInst, macrocodeBlock, 2345083Sgblack@eecs.umich.edu %(flags)s, %(src1)s, %(src2)s, %(dest)s, 2355083Sgblack@eecs.umich.edu %(dataSize)s, %(spm)d)''' % { 2365083Sgblack@eecs.umich.edu "class_name" : self.className, 2375083Sgblack@eecs.umich.edu "flags" : self.microFlagsText(microFlags), 2385083Sgblack@eecs.umich.edu "src1" : self.src1, "src2" : self.src2, 2395083Sgblack@eecs.umich.edu "dest" : self.dest, 2405083Sgblack@eecs.umich.edu "dataSize" : self.dataSize, 2415083Sgblack@eecs.umich.edu "spm" : self.spm} 2425083Sgblack@eecs.umich.edu 2439371Snilay@cs.wisc.edu class Movfp(FpUnaryOp): 2448588Sgblack@eecs.umich.edu code = 'FpDestReg_uqw = FpSrcReg1_uqw;' 2458588Sgblack@eecs.umich.edu else_code = 'FpDestReg_uqw = FpDestReg_uqw;' 2469211Snilay@cs.wisc.edu cond_check = "checkCondition(ccFlagBits | cfofBits | dfBit | \ 2479211Snilay@cs.wisc.edu ecfBit | ezfBit, src2)" 2485083Sgblack@eecs.umich.edu 2499371Snilay@cs.wisc.edu class Xorfp(FpBinaryOp): 2508588Sgblack@eecs.umich.edu code = 'FpDestReg_uqw = FpSrcReg1_uqw ^ FpSrcReg2_uqw;' 2515083Sgblack@eecs.umich.edu 2529371Snilay@cs.wisc.edu class Sqrtfp(FpBinaryOp): 2535083Sgblack@eecs.umich.edu code = 'FpDestReg = sqrt(FpSrcReg2);' 2545083Sgblack@eecs.umich.edu 2559371Snilay@cs.wisc.edu class Cosfp(FpUnaryOp): 2569371Snilay@cs.wisc.edu code = 'FpDestReg = cos(FpSrcReg1);' 2579371Snilay@cs.wisc.edu 2589371Snilay@cs.wisc.edu class Sinfp(FpUnaryOp): 2599371Snilay@cs.wisc.edu code = 'FpDestReg = sin(FpSrcReg1);' 2609371Snilay@cs.wisc.edu 2619371Snilay@cs.wisc.edu 2625083Sgblack@eecs.umich.edu # Conversion microops 2639371Snilay@cs.wisc.edu class ConvOp(FpBinaryOp): 2645083Sgblack@eecs.umich.edu abstract = True 2655083Sgblack@eecs.umich.edu def __init__(self, dest, src1): 2666345Sgblack@eecs.umich.edu super(ConvOp, self).__init__(dest, src1, \ 2676345Sgblack@eecs.umich.edu "InstRegIndex(FLOATREG_MICROFP0)") 2685083Sgblack@eecs.umich.edu 2695083Sgblack@eecs.umich.edu # These probably shouldn't look at the ExtMachInst directly to figure 2705083Sgblack@eecs.umich.edu # out what size to use and should instead delegate that to the macroop's 2715083Sgblack@eecs.umich.edu # constructor. That would be more efficient, and it would make the 2725083Sgblack@eecs.umich.edu # microops a little more modular. 2735083Sgblack@eecs.umich.edu class cvtf_i2d(ConvOp): 2745083Sgblack@eecs.umich.edu code = ''' 2755083Sgblack@eecs.umich.edu X86IntReg intReg = SSrcReg1; 2765083Sgblack@eecs.umich.edu if (REX_W) 2775083Sgblack@eecs.umich.edu FpDestReg = intReg.SR; 2785083Sgblack@eecs.umich.edu else 2795083Sgblack@eecs.umich.edu FpDestReg = intReg.SE; 2805083Sgblack@eecs.umich.edu ''' 2815083Sgblack@eecs.umich.edu 2825083Sgblack@eecs.umich.edu class cvtf_i2d_hi(ConvOp): 2835083Sgblack@eecs.umich.edu code = 'FpDestReg = bits(SSrcReg1, 63, 32);' 2845083Sgblack@eecs.umich.edu 2855083Sgblack@eecs.umich.edu class cvtf_d2i(ConvOp): 2865083Sgblack@eecs.umich.edu code = ''' 2875083Sgblack@eecs.umich.edu int64_t intSrcReg1 = static_cast<int64_t>(FpSrcReg1); 2885083Sgblack@eecs.umich.edu if (REX_W) 2895083Sgblack@eecs.umich.edu SDestReg = intSrcReg1; 2905083Sgblack@eecs.umich.edu else 2915083Sgblack@eecs.umich.edu SDestReg = merge(SDestReg, intSrcReg1, 4); 2925083Sgblack@eecs.umich.edu ''' 2935083Sgblack@eecs.umich.edu 2945083Sgblack@eecs.umich.edu # These need to consider size at some point. They'll always use doubles 2955083Sgblack@eecs.umich.edu # for the moment. 2969371Snilay@cs.wisc.edu class addfp(FpBinaryOp): 2975083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 + FpSrcReg2;' 2985083Sgblack@eecs.umich.edu 2999371Snilay@cs.wisc.edu class mulfp(FpBinaryOp): 3005083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 * FpSrcReg2;' 3015083Sgblack@eecs.umich.edu 3029371Snilay@cs.wisc.edu class divfp(FpBinaryOp): 3035083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 / FpSrcReg2;' 3045083Sgblack@eecs.umich.edu 3059371Snilay@cs.wisc.edu class subfp(FpBinaryOp): 3065083Sgblack@eecs.umich.edu code = 'FpDestReg = FpSrcReg1 - FpSrcReg2;' 3075083Sgblack@eecs.umich.edu 3089371Snilay@cs.wisc.edu class Compfp(FpBinaryOp): 3095083Sgblack@eecs.umich.edu def __init__(self, src1, src2, spm=0, setStatus=False, \ 3105083Sgblack@eecs.umich.edu dataSize="env.dataSize"): 3116345Sgblack@eecs.umich.edu super(Compfp, self).__init__("InstRegIndex(FLOATREG_MICROFP0)", \ 3125083Sgblack@eecs.umich.edu src1, src2, spm, setStatus, dataSize) 3135083Sgblack@eecs.umich.edu # This class sets the condition codes in rflags according to the 3145083Sgblack@eecs.umich.edu # rules for comparing floating point. 3155083Sgblack@eecs.umich.edu code = ''' 3165083Sgblack@eecs.umich.edu // ZF PF CF 3175083Sgblack@eecs.umich.edu // Unordered 1 1 1 3185083Sgblack@eecs.umich.edu // Greater than 0 0 0 3195083Sgblack@eecs.umich.edu // Less than 0 0 1 3205083Sgblack@eecs.umich.edu // Equal 1 0 0 3215083Sgblack@eecs.umich.edu // OF = SF = AF = 0 3229010Snilay@cs.wisc.edu ccFlagBits = ccFlagBits & ~(SFBit | AFBit | ZFBit | PFBit); 3239010Snilay@cs.wisc.edu cfofBits = cfofBits & ~(OFBit | CFBit); 3249010Snilay@cs.wisc.edu 3259010Snilay@cs.wisc.edu if (std::isnan(FpSrcReg1) || std::isnan(FpSrcReg2)) { 3269010Snilay@cs.wisc.edu ccFlagBits = ccFlagBits | (ZFBit | PFBit); 3279010Snilay@cs.wisc.edu cfofBits = cfofBits | CFBit; 3289010Snilay@cs.wisc.edu } 3295083Sgblack@eecs.umich.edu else if(FpSrcReg1 < FpSrcReg2) 3309010Snilay@cs.wisc.edu cfofBits = cfofBits | CFBit; 3315083Sgblack@eecs.umich.edu else if(FpSrcReg1 == FpSrcReg2) 3325083Sgblack@eecs.umich.edu ccFlagBits = ccFlagBits | ZFBit; 3335083Sgblack@eecs.umich.edu ''' 3349470Snilay@cs.wisc.edu 3359470Snilay@cs.wisc.edu class absfp(FpUnaryOp): 3369470Snilay@cs.wisc.edu code = 'FpDestReg = fabs(FpSrcReg1);' 3379470Snilay@cs.wisc.edu flag_code = 'FSW &= (~CC1Bit);' 3389470Snilay@cs.wisc.edu 3399470Snilay@cs.wisc.edu class chsfp(FpUnaryOp): 3409470Snilay@cs.wisc.edu code = 'FpDestReg = (-1) * (FpSrcReg1);' 3419470Snilay@cs.wisc.edu flag_code = 'FSW &= (~CC1Bit);' 3425083Sgblack@eecs.umich.edu}}; 343