1// Copyright (c) 2006-2007 The Regents of The University of Michigan 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer; 8// redistributions in binary form must reproduce the above copyright 9// notice, this list of conditions and the following disclaimer in the 10// documentation and/or other materials provided with the distribution; 11// neither the name of the copyright holders nor the names of its 12// contributors may be used to endorse or promote products derived from 13// this software without specific prior written permission. 14// 15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26// 27// Authors: Ali Saidi 28// Gabe Black 29// Steve Reinhardt 30 31// Declarations for execute() methods. 32def template BasicExecDeclare {{ 33 Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const; 34}}; 35 36// Definitions of execute methods that panic. 37def template BasicExecPanic {{
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38 Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const
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38 Fault 39 execute(%(CPU_exec_context)s *, Trace::InstRecord *) const |
40 { 41 panic("Execute method called when it shouldn't!"); 42 M5_DUMMY_RETURN 43 } 44}}; 45 46// Basic instruction class declaration template. 47def template BasicDeclare {{ 48 /** 49 * Static instruction class for "%(mnemonic)s". 50 */ 51 class %(class_name)s : public %(base_class)s 52 { 53 public: 54 // Constructor. 55 %(class_name)s(ExtMachInst machInst); 56 %(BasicExecDeclare)s 57 }; 58}}; 59 60// Basic instruction class declaration template. 61def template BasicDeclareWithMnemonic {{ 62 /** 63 * Static instruction class for "%(mnemonic)s". 64 */ 65 class %(class_name)s : public %(base_class)s 66 { 67 public: 68 // Constructor. 69 %(class_name)s(const char * mnemonic, ExtMachInst machInst); 70 %(BasicExecDeclare)s 71 }; 72}}; 73 74// Basic instruction class constructor template. 75def template BasicConstructor {{ 76 inline %(class_name)s::%(class_name)s(ExtMachInst machInst) 77 : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 78 { 79 %(constructor)s; 80 } 81}}; 82 83// Basic instruction class constructor template. 84def template BasicConstructorWithMnemonic {{ 85 inline %(class_name)s::%(class_name)s(const char * mnemonic, 86 ExtMachInst machInst) 87 : %(base_class)s(mnemonic, machInst, %(op_class)s) 88 { 89 %(constructor)s; 90 } 91}}; 92 93// Basic instruction class execute method template. 94def template BasicExecute {{
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94 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
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95 Fault 96 %(class_name)s::execute(%(CPU_exec_context)s *xc, |
97 Trace::InstRecord *traceData) const 98 { 99 Fault fault = NoFault; 100 101 %(fp_enable_check)s; 102 %(op_decl)s; 103 %(op_rd)s; 104 %(code)s; 105
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104 if(fault == NoFault)
105 {
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106 if (fault == NoFault) { |
107 %(op_wb)s; 108 } 109 return fault; 110 } 111}}; 112 113// Basic decode template. 114def template BasicDecode {{ 115 return new %(class_name)s(machInst); 116}}; 117 118// Basic decode template, passing mnemonic in as string arg to constructor. 119def template BasicDecodeWithMnemonic {{ 120 return new %(class_name)s("%(mnemonic)s", machInst); 121}}; 122 123// The most basic instruction format... used only for a few misc. insts 124def format BasicOperate(code, *flags) {{ 125 code = filterDoubles(code) 126 iop = InstObjParams(name, Name, 'SparcStaticInst', code, flags) 127 header_output = BasicDeclare.subst(iop) 128 decoder_output = BasicConstructor.subst(iop) 129 decode_block = BasicDecode.subst(iop) 130 exec_output = BasicExecute.subst(iop) 131}}; 132 133def format FpBasic(code, *flags) {{ 134 fp_code = """ 135 Fsr |= bits(Fsr,4,0) << 5; 136 Fsr = insertBits(Fsr,4,0,0); 137 int newrnd = M5_FE_TONEAREST; 138 switch (Fsr<31:30>) { 139 case 0: newrnd = M5_FE_TONEAREST; break; 140 case 1: newrnd = M5_FE_TOWARDZERO; break; 141 case 2: newrnd = M5_FE_UPWARD; break; 142 case 3: newrnd = M5_FE_DOWNWARD; break; 143 } 144 int oldrnd = m5_fegetround(); 145 m5_fesetround(newrnd); 146""" 147 148 fp_code += code 149 150 151 fp_code += """ 152 m5_fesetround(oldrnd); 153""" 154 fp_code = filterDoubles(fp_code) 155 iop = InstObjParams(name, Name, 'SparcStaticInst', fp_code, flags) 156 header_output = BasicDeclare.subst(iop) 157 decoder_output = BasicConstructor.subst(iop) 158 decode_block = BasicDecode.subst(iop) 159 exec_output = BasicExecute.subst(iop) 160}};
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