From 77c0e1d1102af4c023bcd4609022b1600cadfea5 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Sun, 12 Oct 2008 15:33:17 -0700 Subject: X86: Create a SeqOp class of microops and make Br one of them. --- src/arch/x86/isa/microops/seqop.isa | 208 ++++++++++++++++++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 src/arch/x86/isa/microops/seqop.isa (limited to 'src/arch/x86/isa/microops/seqop.isa') diff --git a/src/arch/x86/isa/microops/seqop.isa b/src/arch/x86/isa/microops/seqop.isa new file mode 100644 index 000000000..821afbe83 --- /dev/null +++ b/src/arch/x86/isa/microops/seqop.isa @@ -0,0 +1,208 @@ +// Copyright (c) 2008 The Hewlett-Packard Development Company +// All rights reserved. +// +// Redistribution and use of this software in source and binary forms, +// with or without modification, are permitted provided that the +// following conditions are met: +// +// The software must be used only for Non-Commercial Use which means any +// use which is NOT directed to receiving any direct monetary +// compensation for, or commercial advantage from such use. Illustrative +// examples of non-commercial use are academic research, personal study, +// teaching, education and corporate research & development. +// Illustrative examples of commercial use are distributing products for +// commercial advantage and providing services using the software for +// commercial advantage. +// +// If you wish to use this software or functionality therein that may be +// covered by patents for commercial use, please contact: +// Director of Intellectual Property Licensing +// Office of Strategy and Technology +// Hewlett-Packard Company +// 1501 Page Mill Road +// Palo Alto, California 94304 +// +// 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 HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. No right of +// sublicense is granted herewith. Derivatives of the software and +// output created using the software may be prepared, but only for +// Non-Commercial Uses. Derivatives of the software may be shared with +// others provided: (i) the others agree to abide by the list of +// conditions herein which includes the Non-Commercial Use restrictions; +// and (ii) such Derivatives of the software include the above copyright +// notice to acknowledge the contribution from this software where +// applicable, this list of conditions and the disclaimer below. +// +// 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, + bool isMicro, bool isDelayed, bool isFirst, bool isLast, + 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 + { + private: + void buildMe(); + public: + %(class_name)s(ExtMachInst _machInst, const char * instMnem, + bool isMicro, bool isDelayed, bool isFirst, bool isLast, + uint16_t _target, uint8_t _cc); + + %(class_name)s(ExtMachInst _machInst, const char * instMnem, + uint16_t _target, uint8_t _cc); + + %(BasicExecDeclare)s + }; +}}; + +def template SeqOpExecute {{ + Fault %(class_name)s::execute(%(CPU_exec_context)s *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 {{ + inline SeqOpBase::SeqOpBase( + ExtMachInst machInst, const char * mnemonic, const char * instMnem, + uint16_t _target, uint8_t _cc) : + X86MicroopBase(machInst, mnemonic, instMnem, + false, false, false, false, No_OpClass), + target(_target), cc(_cc) + { + } + + inline SeqOpBase::SeqOpBase( + ExtMachInst machInst, const char * mnemonic, const char * instMnem, + bool isMicro, bool isDelayed, bool isFirst, bool isLast, + uint16_t _target, uint8_t _cc) : + X86MicroopBase(machInst, mnemonic, instMnem, + isMicro, isDelayed, isFirst, isLast, No_OpClass), + target(_target), cc(_cc) + { + } +}}; + +def template SeqOpConstructor {{ + + inline void %(class_name)s::buildMe() + { + %(constructor)s; + } + + inline %(class_name)s::%(class_name)s( + ExtMachInst machInst, const char * instMnem, + uint16_t _target, uint8_t _cc) : + %(base_class)s(machInst, "%(mnemonic)s", instMnem, _target, _cc) + { + buildMe(); + } + + inline %(class_name)s::%(class_name)s( + ExtMachInst machInst, const char * instMnem, + bool isMicro, bool isDelayed, bool isFirst, bool isLast, + uint16_t _target, uint8_t _cc) : + %(base_class)s(machInst, "%(mnemonic)s", instMnem, + isMicro, isDelayed, isFirst, isLast, _target, _cc) + { + buildMe(); + } +}}; + +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 Br(X86Microop): + className = "MicroBranch" + 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, mnemonic + %(flags)s, %(target)s, %(cc)s)''' % { + "class_name" : self.className, + "flags" : self.microFlagsText(microFlags), + "target" : self.target, + "cc" : self.cond} + return allocator + + iop = InstObjParams("br", "MicroBranchFlags", "SeqOpBase", + {"code": "nuIP = target", + "else_code": "nuIP = nuIP", + "cond_test": "checkCondition(ccFlagBits, cc)"}) + 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"}) + exec_output += SeqOpExecute.subst(iop) + header_output += SeqOpDeclare.subst(iop) + decoder_output += SeqOpConstructor.subst(iop) + microopClasses["br"] = Br +}}; -- cgit v1.2.3