trap.isa revision 5222:bb733a878f85
1// -*- mode:c++ -*- 2 3// Copyright .AN) 2007 MIPS Technologies, Inc. All Rights Reserved 4 5// This software is part of the M5 simulator. 6 7// THIS IS A LEGAL AGREEMENT. BY DOWNLOADING, USING, COPYING, CREATING 8// DERIVATIVE WORKS, AND/OR DISTRIBUTING THIS SOFTWARE YOU ARE AGREEING 9// TO THESE TERMS AND CONDITIONS. 10 11// Permission is granted to use, copy, create derivative works and 12// distribute this software and such derivative works for any purpose, 13// so long as (1) the copyright notice above, this grant of permission, 14// and the disclaimer below appear in all copies and derivative works 15// made, (2) the copyright notice above is augmented as appropriate to 16// reflect the addition of any new copyrightable work in a derivative 17// work (e.g., Copyright .AN) <Publication Year> Copyright Owner), and (3) 18// the name of MIPS Technologies, Inc. ($B!H(BMIPS$B!I(B) is not used in any 19// advertising or publicity pertaining to the use or distribution of 20// this software without specific, written prior authorization. 21 22// THIS SOFTWARE IS PROVIDED $B!H(BAS IS.$B!I(B MIPS MAKES NO WARRANTIES AND 23// DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, STATUTORY, IMPLIED OR 24// OTHERWISE, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND 26// NON-INFRINGEMENT OF THIRD PARTY RIGHTS, REGARDING THIS SOFTWARE. 27// IN NO EVENT SHALL MIPS BE LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, 28// INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, OR PUNITIVE DAMAGES OF 29// ANY KIND OR NATURE, ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT, 30// THIS SOFTWARE AND/OR THE USE OF THIS SOFTWARE, WHETHER SUCH LIABILITY 31// IS ASSERTED ON THE BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE OR 32// STRICT LIABILITY), OR OTHERWISE, EVEN IF MIPS HAS BEEN WARNED OF THE 33// POSSIBILITY OF ANY SUCH LOSS OR DAMAGE IN ADVANCE. 34 35//Authors: Korey L. Sewell 36// Jaidev Patwardhan 37 38//////////////////////////////////////////////////////////////////// 39// 40// Trap instructions 41// 42 43output header {{ 44 /** 45 * Base class for integer operations. 46 */ 47 class Trap : public MipsStaticInst 48 { 49 protected: 50 51 /// Constructor 52 Trap(const char *mnem, MachInst _machInst, OpClass __opClass) : MipsStaticInst(mnem, _machInst, __opClass) 53 { 54 } 55 56 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 57 }; 58 class TrapImm : public MipsStaticInst 59 { 60 protected: 61 62 int16_t imm; 63 64 /// Constructor 65 TrapImm(const char *mnem, MachInst _machInst, OpClass __opClass) : 66 MipsStaticInst(mnem, _machInst, __opClass),imm(INTIMM) 67 { 68 } 69 70 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 71 72 73 }; 74 75}}; 76 77output decoder {{ 78 std::string Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const 79 { 80 return "Disassembly of trap instruction\n"; 81 } 82 std::string TrapImm::generateDisassembly(Addr pc, const SymbolTable *symtab) const 83 { 84 return "Disassembly of trap instruction\n"; 85 } 86}}; 87 88def template TrapExecute {{ 89 //Edit This Template When Traps Are Implemented 90 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 91 { 92 //Write the resulting state to the execution context 93 %(op_wb)s; 94 95 //Call into the trap handler with the appropriate fault 96 return No_Fault; 97 } 98}}; 99def format Trap(code, *flags) {{ 100 101 code ='bool cond;\n' + code 102 code += 'if (cond) {\n' 103 code += 'fault = new TrapFault();\n};' 104 105 iop = InstObjParams(name, Name, 'MipsStaticInst', code, flags) 106 header_output = BasicDeclare.subst(iop) 107 decoder_output = BasicConstructor.subst(iop) 108 decode_block = BasicDecode.subst(iop) 109 exec_output = BasicExecute.subst(iop) 110}}; 111def format TrapImm(code, *flags) {{ 112 113 code ='bool cond;\n' + code 114 code += 'if (cond) {\n' 115 code += 'fault = new TrapFault();\n};' 116 iop = InstObjParams(name, Name, 'MipsStaticInst', code, flags) 117 header_output = BasicDeclare.subst(iop) 118 decoder_output = BasicConstructor.subst(iop) 119 decode_block = BasicDecode.subst(iop) 120 exec_output = BasicExecute.subst(iop) 121}}; 122