| // -*- mode:c++ -*- |
| |
| // Copyright (c) 2010-2011,2017 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 StoreInst(LoadStoreInst): |
| execBase = 'Store' |
| |
| def __init__(self, mnem, post, add, writeback, size=4, |
| sign=False, user=False, flavor="normal", |
| instFlags = []): |
| super(StoreInst, 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.instFlags = instFlags |
| if self.add: |
| self.op = " +" |
| else: |
| self.op = " -" |
| |
| self.memFlags = ["ArmISA::TLB::MustBeOne"] |
| self.codeBlobs = { "postacc_code" : "" } |
| |
| def emitHelper(self, base = 'Memory', wbDecl = 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, self.instFlags, |
| base, wbDecl, None, False, |
| self.size, self.sign) |
| |
| header_output += newHeader |
| decoder_output += newDecoder |
| exec_output += newExec |
| |
| class SrsInst(LoadStoreInst): |
| execBase = 'Store' |
| decConstBase = 'Srs' |
| |
| def __init__(self, mnem, post, add, writeback): |
| super(SrsInst, self).__init__() |
| self.name = mnem |
| self.post = post |
| self.add = add |
| self.writeback = writeback |
| |
| self.Name = "SRS_" + storeImmClassName(post, add, writeback, 8) |
| |
| def emit(self): |
| offset = 0 |
| if self.post != self.add: |
| offset += 4 |
| if not self.add: |
| offset -= 8 |
| |
| eaCode = "EA = SpMode + %d;" % offset |
| |
| wbDiff = -8 |
| if self.add: |
| wbDiff = 8 |
| accCode = ''' |
| CPSR cpsr = Cpsr; |
| Mem_ud = (uint64_t)cSwap(LR_uw, cpsr.e) | |
| ((uint64_t)cSwap(Spsr_uw, cpsr.e) << 32); |
| ''' |
| |
| global header_output, decoder_output, exec_output |
| |
| codeBlobs = { "ea_code": eaCode, |
| "memacc_code": accCode, |
| "postacc_code": "" } |
| codeBlobs["predicate_test"] = pickPredicate(codeBlobs) |
| |
| wbDecl = None |
| if self.writeback: |
| wbDecl = '''MicroAddiUop(machInst, |
| intRegInMode((OperatingMode)regMode, INTREG_SP), |
| intRegInMode((OperatingMode)regMode, INTREG_SP), |
| %d);''' % wbDiff |
| |
| (newHeader, |
| newDecoder, |
| newExec) = self.fillTemplates(self.name, self.Name, codeBlobs, |
| ["ArmISA::TLB::AlignWord", "ArmISA::TLB::MustBeOne"], [], |
| 'SrsOp', wbDecl) |
| |
| header_output += newHeader |
| decoder_output += newDecoder |
| exec_output += newExec |
| |
| class StoreImmInst(StoreInst): |
| def __init__(self, *args, **kargs): |
| super(StoreImmInst, 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);" |
| |
| class StoreRegInst(StoreInst): |
| def __init__(self, *args, **kargs): |
| super(StoreRegInst, self).__init__(*args, **kargs) |
| self.offset = self.op + " shift_rm_imm(Index, shiftAmt," + \ |
| " shiftType, OptShiftRmCondCodesC)" |
| if self.add: |
| self.wbDecl = ''' |
| MicroAddUop(machInst, base, base, index, shiftAmt, shiftType); |
| ''' |
| else: |
| self.wbDecl = ''' |
| MicroSubUop(machInst, base, base, index, shiftAmt, shiftType); |
| ''' |
| |
| class StoreSingle(StoreInst): |
| def __init__(self, *args, **kargs): |
| super(StoreSingle, 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") |
| |
| if self.flavor == "exclusive": |
| self.memFlags.append("Request::LLSC") |
| elif self.flavor != "fp": |
| self.memFlags.append("ArmISA::TLB::AllowUnaligned") |
| |
| # Disambiguate the class name for different flavors of stores |
| if self.flavor != "normal": |
| self.Name = "%s_%s" % (self.name.upper(), self.Name) |
| |
| def emit(self): |
| # Address computation |
| 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 = 'Mem%(suffix)s = cSwap(FpDest_uw, ((CPSR)Cpsr).e);' |
| else: |
| accCode = \ |
| 'Mem%(suffix)s = cSwap(Dest%(suffix)s, ((CPSR)Cpsr).e);' |
| accCode = accCode % \ |
| { "suffix" : 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) |
| |
| def storeImmClassName(post, add, writeback, size=4, sign=False, user=False): |
| return memClassName("STORE_IMM", post, add, writeback, size, sign, user) |
| |
| class StoreImmEx(StoreImmInst, StoreSingle): |
| execBase = 'StoreEx' |
| decConstBase = 'StoreExImm' |
| basePrefix = 'MemoryExImm' |
| nameFunc = staticmethod(storeImmClassName) |
| |
| def __init__(self, *args, **kargs): |
| super(StoreImmEx, self).__init__(*args, **kargs) |
| self.codeBlobs["postacc_code"] = \ |
| "Result = !writeResult; SevMailbox = 1; LLSCLock = 0;" |
| |
| class StoreImm(StoreImmInst, StoreSingle): |
| decConstBase = 'LoadStoreImm' |
| basePrefix = 'MemoryImm' |
| nameFunc = staticmethod(storeImmClassName) |
| |
| def storeRegClassName(post, add, writeback, size=4, sign=False, user=False): |
| return memClassName("STORE_REG", post, add, writeback, size, sign, user) |
| |
| class StoreReg(StoreRegInst, StoreSingle): |
| decConstBase = 'StoreReg' |
| basePrefix = 'MemoryReg' |
| nameFunc = staticmethod(storeRegClassName) |
| |
| class StoreDouble(StoreInst): |
| def __init__(self, *args, **kargs): |
| super(StoreDouble, self).__init__(*args, **kargs) |
| |
| # Build the default class name |
| self.Name = self.nameFunc(self.post, self.add, self.writeback) |
| |
| # Add memory request flags where necessary |
| if self.flavor == "exclusive": |
| 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 stores |
| if self.flavor != "normal": |
| self.Name = "%s_%s" % (self.name.upper(), self.Name) |
| |
| 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 = ''' |
| uint64_t swappedMem = (uint64_t)FpDest_uw | |
| ((uint64_t)FpDest2_uw << 32); |
| Mem_ud = cSwap(swappedMem, ((CPSR)Cpsr).e); |
| ''' |
| else: |
| accCode = ''' |
| CPSR cpsr = Cpsr; |
| Mem_ud = (uint64_t)cSwap(Dest_uw, cpsr.e) | |
| ((uint64_t)cSwap(Dest2_uw, cpsr.e) << 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) |
| |
| def storeDoubleImmClassName(post, add, writeback): |
| return memClassName("STORE_IMMD", post, add, writeback, 4, False, False) |
| |
| class StoreDoubleImmEx(StoreImmInst, StoreDouble): |
| execBase = 'StoreEx' |
| decConstBase = 'StoreExDImm' |
| basePrefix = 'MemoryExDImm' |
| nameFunc = staticmethod(storeDoubleImmClassName) |
| |
| def __init__(self, *args, **kargs): |
| super(StoreDoubleImmEx, self).__init__(*args, **kargs) |
| self.codeBlobs["postacc_code"] = \ |
| "Result = !writeResult; SevMailbox = 1; LLSCLock = 0;" |
| |
| class StoreDoubleImm(StoreImmInst, StoreDouble): |
| decConstBase = 'LoadStoreDImm' |
| basePrefix = 'MemoryDImm' |
| nameFunc = staticmethod(storeDoubleImmClassName) |
| |
| def storeDoubleRegClassName(post, add, writeback): |
| return memClassName("STORE_REGD", post, add, writeback, 4, False, False) |
| |
| class StoreDoubleReg(StoreRegInst, StoreDouble): |
| decConstBase = 'StoreDReg' |
| basePrefix = 'MemoryDReg' |
| nameFunc = staticmethod(storeDoubleRegClassName) |
| |
| def buildStores(mnem, size=4, sign=False, user=False): |
| StoreImm(mnem, True, True, True, size, sign, user).emit() |
| StoreReg(mnem, True, True, True, size, sign, user).emit() |
| StoreImm(mnem, True, False, True, size, sign, user).emit() |
| StoreReg(mnem, True, False, True, size, sign, user).emit() |
| StoreImm(mnem, False, True, True, size, sign, user).emit() |
| StoreReg(mnem, False, True, True, size, sign, user).emit() |
| StoreImm(mnem, False, False, True, size, sign, user).emit() |
| StoreReg(mnem, False, False, True, size, sign, user).emit() |
| StoreImm(mnem, False, True, False, size, sign, user).emit() |
| StoreReg(mnem, False, True, False, size, sign, user).emit() |
| StoreImm(mnem, False, False, False, size, sign, user).emit() |
| StoreReg(mnem, False, False, False, size, sign, user).emit() |
| |
| def buildDoubleStores(mnem): |
| StoreDoubleImm(mnem, True, True, True).emit() |
| StoreDoubleReg(mnem, True, True, True).emit() |
| StoreDoubleImm(mnem, True, False, True).emit() |
| StoreDoubleReg(mnem, True, False, True).emit() |
| StoreDoubleImm(mnem, False, True, True).emit() |
| StoreDoubleReg(mnem, False, True, True).emit() |
| StoreDoubleImm(mnem, False, False, True).emit() |
| StoreDoubleReg(mnem, False, False, True).emit() |
| StoreDoubleImm(mnem, False, True, False).emit() |
| StoreDoubleReg(mnem, False, True, False).emit() |
| StoreDoubleImm(mnem, False, False, False).emit() |
| StoreDoubleReg(mnem, False, False, False).emit() |
| |
| def buildSrsStores(mnem): |
| SrsInst(mnem, True, True, True).emit() |
| SrsInst(mnem, True, True, False).emit() |
| SrsInst(mnem, True, False, True).emit() |
| SrsInst(mnem, True, False, False).emit() |
| SrsInst(mnem, False, True, True).emit() |
| SrsInst(mnem, False, True, False).emit() |
| SrsInst(mnem, False, False, True).emit() |
| SrsInst(mnem, False, False, False).emit() |
| |
| buildStores("str") |
| buildStores("strt", user=True) |
| buildStores("strb", size=1) |
| buildStores("strbt", size=1, user=True) |
| buildStores("strh", size=2) |
| buildStores("strht", size=2, user=True) |
| |
| buildSrsStores("srs") |
| |
| buildDoubleStores("strd") |
| |
| StoreImmEx("strex", False, True, False, size=4, flavor="exclusive", |
| instFlags = ['IsStoreConditional']).emit() |
| StoreImmEx("strexh", False, True, False, size=2, flavor="exclusive", |
| instFlags = ['IsStoreConditional']).emit() |
| StoreImmEx("strexb", False, True, False, size=1, flavor="exclusive", |
| instFlags = ['IsStoreConditional']).emit() |
| StoreDoubleImmEx("strexd", False, True, False, flavor="exclusive", |
| instFlags = ['IsStoreConditional']).emit() |
| |
| StoreImm("vstr", False, True, False, size=4, flavor="fp").emit() |
| StoreImm("vstr", False, False, False, size=4, flavor="fp").emit() |
| StoreDoubleImm("vstr", False, True, False, flavor="fp").emit() |
| StoreDoubleImm("vstr", False, False, False, flavor="fp").emit() |
| }}; |
