| // -*- mode:c++ -*- |
| |
| // Copyright (c) 2010-2012 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. |
| |
| let {{ |
| |
| class LoadStoreInst(object): |
| def __init__(self): |
| self.fullExecTemplate = eval(self.execBase + 'Execute') |
| self.initiateAccTemplate = eval(self.execBase + 'InitiateAcc') |
| self.completeAccTemplate = eval(self.execBase + 'CompleteAcc') |
| self.declareTemplate = eval(self.decConstBase + 'Declare') |
| self.constructTemplate = eval(self.decConstBase + 'Constructor') |
| |
| def fillTemplates(self, name, Name, codeBlobs, memFlags, instFlags, |
| base='Memory', wbDecl=None, pcDecl=None, |
| rasPop=False, size=4, sign=False, faCode=None): |
| # Make sure flags are in lists (convert to lists if not). |
| memFlags = makeList(memFlags) |
| instFlags = makeList(instFlags) |
| |
| eaCode = codeBlobs["ea_code"] |
| |
| # This shouldn't be part of the eaCode, but until the exec templates |
| # are converted over it's the easiest place to put it. |
| eaCode += '\n unsigned memAccessFlags = ' |
| eaCode += ('|'.join(memFlags) + ';') |
| |
| codeBlobs["ea_code"] = eaCode |
| |
| if faCode: |
| # For AArch64 the fa_code snippet comes already assembled here |
| codeBlobs["fa_code"] = faCode |
| elif wbDecl == None: |
| codeBlobs["fa_code"] = ''' |
| if (dest != int_reg::Pc) { |
| fault->annotate(ArmISA::ArmFault::SAS, %s); |
| fault->annotate(ArmISA::ArmFault::SSE, %s); |
| fault->annotate(ArmISA::ArmFault::SRT, dest); |
| } |
| ''' %("0" if size == 1 else |
| "1" if size == 2 else "2", |
| "true" if sign else "false") |
| else: |
| codeBlobs["fa_code"] = '' |
| |
| macroName = Name |
| instFlagsCopy = list(instFlags) |
| codeBlobsCopy = dict(codeBlobs) |
| |
| use_uops = 0 |
| if wbDecl is not None or pcDecl is not None: |
| instFlagsCopy.append('IsMicroop') |
| Name = Name + 'Acc' |
| use_uops = 1 |
| |
| use_wb = 0 |
| use_pc = 0 |
| if wbDecl is not None: |
| use_wb = 1 |
| if pcDecl is not None: |
| use_pc = 1 |
| |
| codeBlobsCopy['acc_name'] = Name |
| codeBlobsCopy['wb_decl'] = wbDecl |
| codeBlobsCopy['pc_decl'] = pcDecl |
| codeBlobsCopy['use_uops'] = 0 |
| codeBlobsCopy['use_wb'] = 0 |
| codeBlobsCopy['use_pc'] = 0 |
| is_ras_pop = "0" |
| if rasPop: |
| is_ras_pop = "1" |
| codeBlobsCopy['is_ras_pop'] = is_ras_pop |
| if 'memacc_epilog_code' in codeBlobsCopy: |
| del codeBlobsCopy['memacc_epilog_code'] |
| |
| iop = ArmInstObjParams(name, Name, base, |
| codeBlobsCopy, instFlagsCopy) |
| if 'memacc_epilog_code' in codeBlobs: |
| iop.snippets['memacc_code'] += codeBlobs['memacc_epilog_code'] |
| header_output = self.declareTemplate.subst(iop) |
| decoder_output = self.constructTemplate.subst(iop) |
| exec_output = self.fullExecTemplate.subst(iop) + \ |
| self.initiateAccTemplate.subst(iop) + \ |
| self.completeAccTemplate.subst(iop) |
| |
| if wbDecl is not None or pcDecl is not None: |
| iop = ArmInstObjParams(name, macroName, base, |
| { "wb_decl" : wbDecl, |
| "pc_decl" : pcDecl, |
| "acc_name" : Name, |
| "use_uops" : use_uops, |
| "use_pc" : use_pc, |
| "use_wb" : use_wb, |
| "fa_code" : '', |
| "is_ras_pop" : is_ras_pop }, |
| ['IsMacroop']) |
| header_output += self.declareTemplate.subst(iop) |
| decoder_output += self.constructTemplate.subst(iop) |
| exec_output += PanicExecute.subst(iop) + \ |
| PanicInitiateAcc.subst(iop) + \ |
| PanicCompleteAcc.subst(iop) |
| |
| return (header_output, decoder_output, exec_output) |
| |
| def pickPredicate(blobs): |
| opt_nz = True |
| opt_c = 'opt' |
| opt_v = True |
| |
| if not isinstance(blobs, dict): |
| vals = [blobs] |
| else: |
| vals = blobs.values() |
| for val in vals: |
| if re.search('(?<!Opt)CondCodesNZ(?!.*=)', val): |
| opt_nz = False |
| if re.search('OptShiftRmCondCodesC(?!.*=)', val): |
| opt_c = 'opt_shift_rm' |
| elif re.search('(?<!Opt)CondCodesC(?!.*=)', val): |
| opt_c = 'none' |
| if re.search('(?<!Opt)CondCodesV(?!.*=)', val): |
| opt_v = False |
| |
| # Build up the predicate piece by piece depending on which |
| # flags the instruction needs |
| predicate = 'testPredicate(' |
| if opt_nz: |
| predicate += 'OptCondCodesNZ, ' |
| else: |
| predicate += 'CondCodesNZ, ' |
| if opt_c == 'opt': |
| predicate += 'OptCondCodesC, ' |
| elif opt_c == 'opt_shift_rm': |
| predicate += 'OptShiftRmCondCodesC, ' |
| else: |
| predicate += 'CondCodesC, ' |
| if opt_v: |
| predicate += 'OptCondCodesV, ' |
| else: |
| predicate += 'CondCodesV, ' |
| predicate += 'condCode)' |
| predicate += '/*auto*/' |
| return predicate |
| |
| def memClassName(base, post, add, writeback, \ |
| size=4, sign=False, user=False): |
| Name = base |
| |
| parts = { "P" : post, "A" : add, "W" : writeback, |
| "S" : sign, "U" : user } |
| |
| for (letter, val) in parts.items(): |
| if val: |
| Name += "_%sY" % letter |
| else: |
| Name += "_%sN" % letter |
| |
| Name += ('_SZ%d' % size) |
| |
| return Name |
| |
| def buildMemSuffix(sign, size): |
| if size == 16: |
| memSuffix = '_tud' |
| elif size == 8: |
| memSuffix = '_ud' |
| elif size == 4: |
| if sign: |
| memSuffix = '_sw' |
| else: |
| memSuffix = '_uw' |
| elif size == 2: |
| if sign: |
| memSuffix = '_sh' |
| else: |
| memSuffix = '_uh' |
| elif size == 1: |
| if sign: |
| memSuffix = '_sb' |
| else: |
| memSuffix = '_ub' |
| else: |
| raise Exception("Unrecognized size for access {}".format(size)) |
| |
| return memSuffix |
| |
| def buildMemBase(base, post, writeback): |
| if post and writeback: |
| base = "MemoryPostIndex<%s>" % base |
| elif not post and writeback: |
| base = "MemoryPreIndex<%s>" % base |
| elif not post and not writeback: |
| base = "MemoryOffset<%s>" % base |
| else: |
| raise Exception("Illegal combination of post and writeback") |
| return base |
| }}; |
