| // Copyright (c) 2008 The Hewlett-Packard Development Company |
| // 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 |
| |
| output header {{ |
| class SeqOpBase : public X86ISA::X86MicroopBase |
| { |
| protected: |
| uint16_t target; |
| uint8_t cc; |
| |
| public: |
| SeqOpBase(ExtMachInst _machInst, const char * instMnem, |
| const char * mnemonic, uint64_t setFlags, |
| uint16_t _target, uint8_t _cc); |
| |
| SeqOpBase(ExtMachInst _machInst, const char * instMnem, |
| const char * mnemonic, |
| uint16_t _target, uint8_t _cc); |
| |
| std::string generateDisassembly(Addr pc, |
| const SymbolTable *symtab) const; |
| }; |
| }}; |
| |
| def template SeqOpDeclare {{ |
| class %(class_name)s : public %(base_class)s |
| { |
| public: |
| %(class_name)s(ExtMachInst _machInst, const char * instMnem, |
| uint64_t setFlags, uint16_t _target, uint8_t _cc); |
| |
| Fault execute(ExecContext *, Trace::InstRecord *) const; |
| }; |
| }}; |
| |
| def template SeqOpExecute {{ |
| Fault %(class_name)s::execute(ExecContext *xc, |
| Trace::InstRecord *traceData) const |
| { |
| %(op_decl)s; |
| %(op_rd)s; |
| if (%(cond_test)s) { |
| %(code)s; |
| } else { |
| %(else_code)s; |
| } |
| %(op_wb)s; |
| return NoFault; |
| } |
| }}; |
| |
| output decoder {{ |
| SeqOpBase::SeqOpBase( |
| ExtMachInst machInst, const char * mnemonic, const char * instMnem, |
| uint64_t setFlags, uint16_t _target, uint8_t _cc) : |
| X86MicroopBase(machInst, mnemonic, instMnem, setFlags, No_OpClass), |
| target(_target), cc(_cc) |
| { |
| } |
| }}; |
| |
| def template SeqOpConstructor {{ |
| %(class_name)s::%(class_name)s( |
| ExtMachInst machInst, const char * instMnem, |
| uint64_t setFlags, uint16_t _target, uint8_t _cc) : |
| %(base_class)s(machInst, "%(mnemonic)s", instMnem, |
| setFlags, _target, _cc) |
| { |
| %(constructor)s; |
| %(cond_control_flag_init)s; |
| } |
| }}; |
| |
| output decoder {{ |
| std::string SeqOpBase::generateDisassembly(Addr pc, |
| const SymbolTable *symtab) const |
| { |
| std::stringstream response; |
| |
| printMnemonic(response, instMnem, mnemonic); |
| ccprintf(response, "%#x", target); |
| |
| return response.str(); |
| } |
| }}; |
| |
| let {{ |
| class SeqOp(X86Microop): |
| def __init__(self, target, flags=None): |
| self.target = target |
| if flags: |
| if not isinstance(flags, (list, tuple)): |
| raise Exception, "flags must be a list or tuple of flags" |
| self.cond = " | ".join(flags) |
| self.className += "Flags" |
| else: |
| self.cond = "0" |
| |
| def getAllocator(self, microFlags): |
| allocator = '''new %(class_name)s(machInst, macrocodeBlock, |
| %(flags)s, %(target)s, %(cc)s)''' % { |
| "class_name" : self.className, |
| "flags" : self.microFlagsText(microFlags), |
| "target" : self.target, |
| "cc" : self.cond} |
| return allocator |
| |
| class Br(SeqOp): |
| className = "MicroBranch" |
| |
| def getAllocator(self, microFlags): |
| if "IsLastMicroop" in microFlags: |
| microFlags.remove("IsLastMicroop") |
| if not "IsDelayedCommit" in microFlags: |
| microFlags.append("IsDelayedCommit") |
| return super(Br, self).getAllocator(microFlags) |
| |
| class Eret(SeqOp): |
| target = "normalMicroPC(0)" |
| className = "Eret" |
| |
| def __init__(self, flags=None): |
| if flags: |
| if not isinstance(flags, (list, tuple)): |
| raise Exception, "flags must be a list or tuple of flags" |
| self.cond = " | ".join(flags) |
| self.className += "Flags" |
| else: |
| self.cond = "0" |
| |
| def getAllocator(self, microFlags): |
| if not "IsLastMicroop" in microFlags: |
| microFlags.append("IsLastMicroop") |
| if "IsDelayedCommit" in microFlags: |
| microFlags.remove("IsDelayedCommit") |
| return super(Eret, self).getAllocator(microFlags) |
| |
| iop = InstObjParams("br", "MicroBranchFlags", "SeqOpBase", |
| {"code": "nuIP = target;", |
| "else_code": "nuIP = nuIP;", |
| "cond_test": "checkCondition(ccFlagBits | cfofBits | dfBit | \ |
| ecfBit | ezfBit, cc)", |
| "cond_control_flag_init": "flags[IsCondControl] = true"}) |
| exec_output += SeqOpExecute.subst(iop) |
| header_output += SeqOpDeclare.subst(iop) |
| decoder_output += SeqOpConstructor.subst(iop) |
| iop = InstObjParams("br", "MicroBranch", "SeqOpBase", |
| {"code": "nuIP = target;", |
| "else_code": "nuIP = nuIP;", |
| "cond_test": "true", |
| "cond_control_flag_init": ""}) |
| exec_output += SeqOpExecute.subst(iop) |
| header_output += SeqOpDeclare.subst(iop) |
| decoder_output += SeqOpConstructor.subst(iop) |
| microopClasses["br"] = Br |
| |
| iop = InstObjParams("eret", "EretFlags", "SeqOpBase", |
| {"code": "", "else_code": "", |
| "cond_test": "checkCondition(ccFlagBits | cfofBits | dfBit | \ |
| ecfBit | ezfBit, cc)", |
| "cond_control_flag_init": ""}) |
| exec_output += SeqOpExecute.subst(iop) |
| header_output += SeqOpDeclare.subst(iop) |
| decoder_output += SeqOpConstructor.subst(iop) |
| iop = InstObjParams("eret", "Eret", "SeqOpBase", |
| {"code": "", "else_code": "", |
| "cond_test": "true", |
| "cond_control_flag_init": ""}) |
| exec_output += SeqOpExecute.subst(iop) |
| header_output += SeqOpDeclare.subst(iop) |
| decoder_output += SeqOpConstructor.subst(iop) |
| microopClasses["eret"] = Eret |
| }}; |
