| // -*- mode:c++ -*- |
| |
| // Copyright (c) 2010-2011,2019 ARM Limited |
| // All rights reserved |
| // |
| // The license below extends only to copyright in the software and shall |
| // not be construed as granting a license to any other intellectual |
| // property including but not limited to intellectual property relating |
| // to a hardware implementation of the functionality of the software |
| // licensed hereunder. You may use the software subject to the license |
| // terms below provided that you ensure that this notice is replicated |
| // unmodified and in its entirety in all distributions of the software, |
| // modified or unmodified, in source code or in binary form. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer; |
| // redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in the |
| // documentation and/or other materials provided with the distribution; |
| // neither the name of the copyright holders nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| // |
| // Authors: Gabe Black |
| |
| let {{ |
| import math |
| |
| header_output = "" |
| decoder_output = "" |
| exec_output = "" |
| |
| class LoadInst(LoadStoreInst): |
| execBase = 'Load' |
| |
| def __init__(self, mnem, post, add, writeback, |
| size=4, sign=False, user=False, flavor="normal"): |
| super(LoadInst, self).__init__() |
| |
| self.name = mnem |
| self.post = post |
| self.add = add |
| self.writeback = writeback |
| self.size = size |
| self.sign = sign |
| self.user = user |
| self.flavor = flavor |
| self.rasPop = False |
| |
| if self.add: |
| self.op = " +" |
| else: |
| self.op = " -" |
| |
| self.memFlags = ["ArmISA::TLB::MustBeOne"] |
| self.codeBlobs = {"postacc_code" : ""} |
| |
| def emitHelper(self, base = 'Memory', wbDecl = None, instFlags = [], pcDecl = None): |
| |
| global header_output, decoder_output, exec_output |
| |
| codeBlobs = self.codeBlobs |
| codeBlobs["predicate_test"] = pickPredicate(codeBlobs) |
| (newHeader, |
| newDecoder, |
| newExec) = self.fillTemplates(self.name, self.Name, codeBlobs, |
| self.memFlags, instFlags, base, |
| wbDecl, pcDecl, self.rasPop, |
| self.size, self.sign) |
| |
| header_output += newHeader |
| decoder_output += newDecoder |
| exec_output += newExec |
| |
| class RfeInst(LoadInst): |
| decConstBase = 'Rfe' |
| |
| def __init__(self, mnem, post, add, writeback): |
| super(RfeInst, self).__init__(mnem, post, add, writeback) |
| self.Name = "RFE_" + loadImmClassName(post, add, writeback, 8) |
| |
| self.memFlags.append("ArmISA::TLB::AlignWord") |
| |
| def emit(self): |
| offset = 0 |
| if self.post != self.add: |
| offset += 4 |
| if not self.add: |
| offset -= 8 |
| self.codeBlobs["ea_code"] = "EA = Base + %d;" % offset |
| |
| wbDiff = -8 |
| if self.add: |
| wbDiff = 8 |
| accCode = ''' |
| CPSR cpsr = Cpsr; |
| cpsr.nz = CondCodesNZ; |
| cpsr.c = CondCodesC; |
| cpsr.v = CondCodesV; |
| cpsr.ge = CondCodesGE; |
| URc = cpsr; |
| URa = cSwap<uint32_t>(Mem_ud, cpsr.e); |
| URb = cSwap<uint32_t>(Mem_ud >> 32, cpsr.e); |
| ''' |
| self.codeBlobs["memacc_code"] = accCode |
| |
| wbDecl = None |
| pcDecl = "MicroUopSetPCCPSR(machInst, INTREG_UREG0, INTREG_UREG1, INTREG_UREG2);" |
| |
| if self.writeback: |
| wbDecl = "MicroAddiUop(machInst, base, base, %d);" % wbDiff |
| self.emitHelper('RfeOp', wbDecl, ["IsSerializeAfter", "IsNonSpeculative"], pcDecl) |
| |
| class LoadImmInst(LoadInst): |
| def __init__(self, *args, **kargs): |
| super(LoadImmInst, self).__init__(*args, **kargs) |
| self.offset = self.op + " imm" |
| |
| if self.add: |
| self.wbDecl = "MicroAddiUop(machInst, base, base, imm);" |
| else: |
| self.wbDecl = "MicroSubiUop(machInst, base, base, imm);" |
| |
| if self.add and self.post and self.writeback and not self.sign and \ |
| not self.user and self.size == 4: |
| self.rasPop = True |
| |
| class LoadRegInst(LoadInst): |
| def __init__(self, *args, **kargs): |
| super(LoadRegInst, self).__init__(*args, **kargs) |
| self.offset = self.op + " shift_rm_imm(Index, shiftAmt," + \ |
| " shiftType, OptShiftRmCondCodesC)" |
| if self.add: |
| self.wbDecl = ''' |
| MicroAddUop(machInst, base, base, wbIndexReg, shiftAmt, shiftType); |
| ''' |
| else: |
| self.wbDecl = ''' |
| MicroSubUop(machInst, base, base, wbIndexReg, shiftAmt, shiftType); |
| ''' |
| |
| class LoadSingle(LoadInst): |
| def __init__(self, *args, **kargs): |
| super(LoadSingle, self).__init__(*args, **kargs) |
| |
| # Build the default class name |
| self.Name = self.nameFunc(self.post, self.add, self.writeback, |
| self.size, self.sign, self.user) |
| |
| # Add memory request flags where necessary |
| self.memFlags.append("%d" % int(math.log(self.size, 2))) |
| if self.user: |
| self.memFlags.append("ArmISA::TLB::UserMode") |
| |
| self.instFlags = [] |
| if self.flavor == "dprefetch": |
| self.memFlags.append("Request::PREFETCH") |
| self.instFlags = ['IsDataPrefetch'] |
| elif self.flavor == "iprefetch": |
| self.memFlags.append("Request::PREFETCH") |
| self.instFlags = ['IsInstPrefetch'] |
| elif self.flavor == "normal": |
| self.memFlags.append("ArmISA::TLB::AllowUnaligned") |
| |
| if self.flavor in ("exclusive", "acex"): |
| self.memFlags.append("Request::LLSC") |
| |
| if self.flavor in ("acquire", "acex"): |
| self.instFlags.extend(["IsMemBarrier", |
| "IsWriteBarrier", |
| "IsReadBarrier"]) |
| |
| # Disambiguate the class name for different flavors of loads |
| if self.flavor != "normal": |
| self.Name = "%s_%s" % (self.name.upper(), self.Name) |
| |
| def emit(self): |
| # Address compuation code |
| eaCode = "EA = Base" |
| if not self.post: |
| eaCode += self.offset |
| eaCode += ";" |
| |
| if self.flavor == "fp": |
| eaCode += vfpEnabledCheckCode |
| |
| self.codeBlobs["ea_code"] = eaCode |
| |
| # Code that actually handles the access |
| if self.flavor == "dprefetch" or self.flavor == "iprefetch": |
| accCode = 'uint64_t temp = Mem%s; temp = temp;' |
| elif self.flavor == "fp": |
| accCode = "FpDest_uw = cSwap(Mem%s, ((CPSR)Cpsr).e);\n" |
| else: |
| accCode = "IWDest = cSwap(Mem%s, ((CPSR)Cpsr).e);" |
| accCode = accCode % buildMemSuffix(self.sign, self.size) |
| |
| self.codeBlobs["memacc_code"] = accCode |
| |
| # Push it out to the output files |
| base = buildMemBase(self.basePrefix, self.post, self.writeback) |
| wbDecl = None |
| if self.writeback: |
| wbDecl = self.wbDecl |
| self.emitHelper(base, wbDecl, self.instFlags) |
| |
| def loadImmClassName(post, add, writeback, size=4, sign=False, user=False): |
| return memClassName("LOAD_IMM", post, add, writeback, size, sign, user) |
| |
| class LoadImm(LoadImmInst, LoadSingle): |
| decConstBase = 'LoadImm' |
| basePrefix = 'MemoryImm' |
| nameFunc = staticmethod(loadImmClassName) |
| |
| def loadRegClassName(post, add, writeback, size=4, sign=False, user=False): |
| return memClassName("LOAD_REG", post, add, writeback, size, sign, user) |
| |
| class LoadReg(LoadRegInst, LoadSingle): |
| decConstBase = 'LoadReg' |
| basePrefix = 'MemoryReg' |
| nameFunc = staticmethod(loadRegClassName) |
| |
| class LoadDouble(LoadInst): |
| def __init__(self, *args, **kargs): |
| super(LoadDouble, self).__init__(*args, **kargs) |
| |
| # Build the default class name |
| self.Name = self.nameFunc(self.post, self.add, self.writeback) |
| |
| self.instFlags = [] |
| # Add memory request flags where necessary |
| if self.flavor in ("exclusive", "acex"): |
| self.memFlags.append("Request::LLSC") |
| self.memFlags.append("ArmISA::TLB::AlignDoubleWord") |
| else: |
| self.memFlags.append("ArmISA::TLB::AlignWord") |
| |
| # Disambiguate the class name for different flavors of loads |
| if self.flavor != "normal": |
| self.Name = "%s_%s" % (self.name.upper(), self.Name) |
| |
| if self.flavor in ("acquire", "acex"): |
| self.instFlags.extend(["IsMemBarrier", |
| "IsWriteBarrier", |
| "IsReadBarrier"]) |
| |
| def emit(self): |
| # Address computation code |
| eaCode = "EA = Base" |
| if not self.post: |
| eaCode += self.offset |
| eaCode += ";" |
| |
| if self.flavor == "fp": |
| eaCode += vfpEnabledCheckCode |
| |
| self.codeBlobs["ea_code"] = eaCode |
| |
| # Code that actually handles the access |
| if self.flavor != "fp": |
| accCode = ''' |
| CPSR cpsr = Cpsr; |
| Dest = cSwap<uint32_t>(Mem_ud, cpsr.e); |
| Dest2 = cSwap<uint32_t>(Mem_ud >> 32, cpsr.e); |
| ''' |
| else: |
| accCode = ''' |
| uint64_t swappedMem = cSwap(Mem_ud, ((CPSR)Cpsr).e); |
| FpDest_uw = (uint32_t)swappedMem; |
| FpDest2_uw = (uint32_t)(swappedMem >> 32); |
| ''' |
| |
| self.codeBlobs["memacc_code"] = accCode |
| |
| # Push it out to the output files |
| base = buildMemBase(self.basePrefix, self.post, self.writeback) |
| wbDecl = None |
| if self.writeback: |
| wbDecl = self.wbDecl |
| self.emitHelper(base, wbDecl, self.instFlags) |
| |
| def loadDoubleImmClassName(post, add, writeback): |
| return memClassName("LOAD_IMMD", post, add, writeback, 4, False, False) |
| |
| class LoadDoubleImm(LoadImmInst, LoadDouble): |
| decConstBase = 'LoadStoreDImm' |
| basePrefix = 'MemoryDImm' |
| nameFunc = staticmethod(loadDoubleImmClassName) |
| |
| def loadDoubleRegClassName(post, add, writeback): |
| return memClassName("LOAD_REGD", post, add, writeback, 4, False, False) |
| |
| class LoadDoubleReg(LoadRegInst, LoadDouble): |
| decConstBase = 'LoadDReg' |
| basePrefix = 'MemoryDReg' |
| nameFunc = staticmethod(loadDoubleRegClassName) |
| |
| def buildLoads(mnem, size=4, sign=False, user=False): |
| LoadImm(mnem, True, True, True, size, sign, user).emit() |
| LoadReg(mnem, True, True, True, size, sign, user).emit() |
| LoadImm(mnem, True, False, True, size, sign, user).emit() |
| LoadReg(mnem, True, False, True, size, sign, user).emit() |
| LoadImm(mnem, False, True, True, size, sign, user).emit() |
| LoadReg(mnem, False, True, True, size, sign, user).emit() |
| LoadImm(mnem, False, False, True, size, sign, user).emit() |
| LoadReg(mnem, False, False, True, size, sign, user).emit() |
| LoadImm(mnem, False, True, False, size, sign, user).emit() |
| LoadReg(mnem, False, True, False, size, sign, user).emit() |
| LoadImm(mnem, False, False, False, size, sign, user).emit() |
| LoadReg(mnem, False, False, False, size, sign, user).emit() |
| |
| def buildDoubleLoads(mnem): |
| LoadDoubleImm(mnem, True, True, True).emit() |
| LoadDoubleReg(mnem, True, True, True).emit() |
| LoadDoubleImm(mnem, True, False, True).emit() |
| LoadDoubleReg(mnem, True, False, True).emit() |
| LoadDoubleImm(mnem, False, True, True).emit() |
| LoadDoubleReg(mnem, False, True, True).emit() |
| LoadDoubleImm(mnem, False, False, True).emit() |
| LoadDoubleReg(mnem, False, False, True).emit() |
| LoadDoubleImm(mnem, False, True, False).emit() |
| LoadDoubleReg(mnem, False, True, False).emit() |
| LoadDoubleImm(mnem, False, False, False).emit() |
| LoadDoubleReg(mnem, False, False, False).emit() |
| |
| def buildRfeLoads(mnem): |
| RfeInst(mnem, True, True, True).emit() |
| RfeInst(mnem, True, True, False).emit() |
| RfeInst(mnem, True, False, True).emit() |
| RfeInst(mnem, True, False, False).emit() |
| RfeInst(mnem, False, True, True).emit() |
| RfeInst(mnem, False, True, False).emit() |
| RfeInst(mnem, False, False, True).emit() |
| RfeInst(mnem, False, False, False).emit() |
| |
| def buildPrefetches(mnem, type): |
| LoadReg(mnem, False, False, False, size=1, flavor=type).emit() |
| LoadImm(mnem, False, False, False, size=1, flavor=type).emit() |
| LoadReg(mnem, False, True, False, size=1, flavor=type).emit() |
| LoadImm(mnem, False, True, False, size=1, flavor=type).emit() |
| |
| buildLoads("ldr") |
| buildLoads("ldrt", user=True) |
| buildLoads("ldrb", size=1) |
| buildLoads("ldrbt", size=1, user=True) |
| buildLoads("ldrsb", size=1, sign=True) |
| buildLoads("ldrsbt", size=1, sign=True, user=True) |
| buildLoads("ldrh", size=2) |
| buildLoads("ldrht", size=2, user=True) |
| buildLoads("ldrsh", size=2, sign=True) |
| buildLoads("ldrsht", size=2, sign=True, user=True) |
| |
| buildDoubleLoads("ldrd") |
| |
| buildRfeLoads("rfe") |
| |
| buildPrefetches("pld", "dprefetch") |
| buildPrefetches("pldw", "dprefetch") |
| buildPrefetches("pli", "iprefetch") |
| |
| LoadImm("ldrex", False, True, False, size=4, flavor="exclusive").emit() |
| LoadImm("ldrexh", False, True, False, size=2, flavor="exclusive").emit() |
| LoadImm("ldrexb", False, True, False, size=1, flavor="exclusive").emit() |
| LoadDoubleImm("ldrexd", False, True, False, flavor="exclusive").emit() |
| |
| LoadImm("lda", False, True, False, size=4, flavor="acquire").emit() |
| LoadImm("ldah", False, True, False, size=2, flavor="acquire").emit() |
| LoadImm("ldab", False, True, False, size=1, flavor="acquire").emit() |
| LoadImm("ldaex", False, True, False, size=4, flavor="acex").emit() |
| LoadImm("ldaexh", False, True, False, size=2, flavor="acex").emit() |
| LoadImm("ldaexb", False, True, False, size=1, flavor="acex").emit() |
| LoadDoubleImm("ldaexd", False, True, False, flavor="acex").emit() |
| |
| LoadImm("vldr", False, True, False, size=4, flavor="fp").emit() |
| LoadImm("vldr", False, False, False, size=4, flavor="fp").emit() |
| LoadDoubleImm("vldr", False, True, False, flavor="fp").emit() |
| LoadDoubleImm("vldr", False, False, False, flavor="fp").emit() |
| }}; |
