specop.isa revision 7620:3d8a23caa1ef
1// Copyright (c) 2007-2008 The Hewlett-Packard Development Company 2// All rights reserved. 3// 4// The license below extends only to copyright in the software and shall 5// not be construed as granting a license to any other intellectual 6// property including but not limited to intellectual property relating 7// to a hardware implementation of the functionality of the software 8// licensed hereunder. You may use the software subject to the license 9// terms below provided that you ensure that this notice is replicated 10// unmodified and in its entirety in all distributions of the software, 11// modified or unmodified, in source code or in binary form. 12// 13// Redistribution and use in source and binary forms, with or without 14// modification, are permitted provided that the following conditions are 15// met: redistributions of source code must retain the above copyright 16// notice, this list of conditions and the following disclaimer; 17// redistributions in binary form must reproduce the above copyright 18// notice, this list of conditions and the following disclaimer in the 19// documentation and/or other materials provided with the distribution; 20// neither the name of the copyright holders nor the names of its 21// contributors may be used to endorse or promote products derived from 22// this software without specific prior written permission. 23// 24// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 27// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 28// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 29// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 30// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 34// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35// 36// Authors: Gabe Black 37 38////////////////////////////////////////////////////////////////////////// 39// 40// Fault Microop 41// 42////////////////////////////////////////////////////////////////////////// 43 44output header {{ 45 class MicroFaultBase : public X86ISA::X86MicroopBase 46 { 47 protected: 48 Fault fault; 49 uint8_t cc; 50 51 public: 52 MicroFaultBase(ExtMachInst _machInst, const char * instMnem, 53 uint64_t setFlags, Fault _fault, uint8_t _cc); 54 55 MicroFaultBase(ExtMachInst _machInst, const char * instMnem, 56 Fault _fault, uint8_t _cc); 57 58 std::string generateDisassembly(Addr pc, 59 const SymbolTable *symtab) const; 60 }; 61 62 class MicroHalt : public X86ISA::X86MicroopBase 63 { 64 public: 65 MicroHalt(ExtMachInst _machInst, const char * instMnem, 66 uint64_t setFlags) : 67 X86MicroopBase(_machInst, "halt", instMnem, setFlags, No_OpClass) 68 { 69 } 70 71 MicroHalt(ExtMachInst _machInst, const char * instMnem) : 72 X86MicroopBase(_machInst, "halt", instMnem, 0, No_OpClass) 73 { 74 } 75 76 %(BasicExecDeclare)s 77 78 std::string generateDisassembly(Addr pc, 79 const SymbolTable *symtab) const; 80 }; 81}}; 82 83def template MicroFaultDeclare {{ 84 class %(class_name)s : public %(base_class)s 85 { 86 private: 87 void buildMe(); 88 public: 89 %(class_name)s(ExtMachInst _machInst, const char * instMnem, 90 uint64_t setFlags, Fault _fault, uint8_t _cc); 91 92 %(class_name)s(ExtMachInst _machInst, const char * instMnem, 93 Fault _fault, uint8_t _cc); 94 95 %(BasicExecDeclare)s 96 }; 97}}; 98 99def template MicroFaultExecute {{ 100 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 101 Trace::InstRecord *traceData) const 102 { 103 %(op_decl)s; 104 %(op_rd)s; 105 if (%(cond_test)s) { 106 //Return the fault we were constructed with 107 return fault; 108 } else { 109 return NoFault; 110 } 111 } 112}}; 113 114output exec {{ 115 Fault 116 MicroHalt::execute(%(CPU_exec_context)s *xc, 117 Trace::InstRecord * traceData) const 118 { 119 xc->tcBase()->suspend(); 120 return NoFault; 121 } 122}}; 123 124output decoder {{ 125 inline MicroFaultBase::MicroFaultBase( 126 ExtMachInst machInst, const char * instMnem, 127 Fault _fault, uint8_t _cc) : 128 X86MicroopBase(machInst, "fault", instMnem, 0, No_OpClass), 129 fault(_fault), cc(_cc) 130 { 131 } 132 133 inline MicroFaultBase::MicroFaultBase( 134 ExtMachInst machInst, const char * instMnem, 135 uint64_t setFlags, Fault _fault, uint8_t _cc) : 136 X86MicroopBase(machInst, "fault", instMnem, setFlags, No_OpClass), 137 fault(_fault), cc(_cc) 138 { 139 } 140}}; 141 142def template MicroFaultConstructor {{ 143 144 inline void %(class_name)s::buildMe() 145 { 146 %(constructor)s; 147 } 148 149 inline %(class_name)s::%(class_name)s( 150 ExtMachInst machInst, const char * instMnem, 151 Fault _fault, uint8_t _cc) : 152 %(base_class)s(machInst, instMnem, _fault, _cc) 153 { 154 buildMe(); 155 } 156 157 inline %(class_name)s::%(class_name)s( 158 ExtMachInst machInst, const char * instMnem, uint64_t setFlags, 159 Fault _fault, uint8_t _cc) : 160 %(base_class)s(machInst, instMnem, setFlags, _fault, _cc) 161 { 162 buildMe(); 163 } 164}}; 165 166output decoder {{ 167 std::string MicroFaultBase::generateDisassembly(Addr pc, 168 const SymbolTable *symtab) const 169 { 170 std::stringstream response; 171 172 printMnemonic(response, instMnem, mnemonic); 173 if(fault) 174 response << fault->name(); 175 else 176 response << "No Fault"; 177 178 return response.str(); 179 } 180 181 std::string MicroHalt::generateDisassembly(Addr pc, 182 const SymbolTable *symtab) const 183 { 184 std::stringstream response; 185 186 printMnemonic(response, instMnem, mnemonic); 187 188 return response.str(); 189 } 190}}; 191 192let {{ 193 class Fault(X86Microop): 194 className = "MicroFault" 195 def __init__(self, fault, flags=None): 196 self.fault = fault 197 if flags: 198 if not isinstance(flags, (list, tuple)): 199 raise Exception, "flags must be a list or tuple of flags" 200 self.cond = " | ".join(flags) 201 self.className += "Flags" 202 else: 203 self.cond = "0" 204 205 def getAllocator(self, microFlags): 206 allocator = '''new %(class_name)s(machInst, macrocodeBlock, 207 %(flags)s, %(fault)s, %(cc)s)''' % { 208 "class_name" : self.className, 209 "flags" : self.microFlagsText(microFlags), 210 "fault" : self.fault, 211 "cc" : self.cond} 212 return allocator 213 214 iop = InstObjParams("fault", "MicroFaultFlags", "MicroFaultBase", 215 {"code": "", 216 "cond_test": "checkCondition(ccFlagBits, cc)"}) 217 exec_output = MicroFaultExecute.subst(iop) 218 header_output = MicroFaultDeclare.subst(iop) 219 decoder_output = MicroFaultConstructor.subst(iop) 220 iop = InstObjParams("fault", "MicroFault", "MicroFaultBase", 221 {"code": "", 222 "cond_test": "true"}) 223 exec_output += MicroFaultExecute.subst(iop) 224 header_output += MicroFaultDeclare.subst(iop) 225 decoder_output += MicroFaultConstructor.subst(iop) 226 microopClasses["fault"] = Fault 227 228 class Halt(X86Microop): 229 className = "MicroHalt" 230 def __init__(self): 231 pass 232 233 def getAllocator(self, microFlags): 234 return "new MicroHalt(machInst, macrocodeBlock, %s)" % \ 235 self.microFlagsText(microFlags) 236 237 microopClasses["halt"] = Halt 238}}; 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