basicmem.isa revision 8342:77d12d8f7971
1// -*- mode:c++ -*- 2 3// Copyright (c) 2006-2007 The Regents of The University of Michigan 4// All rights reserved. 5// 6// Redistribution and use in source and binary forms, with or without 7// modification, are permitted provided that the following conditions are 8// met: redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer; 10// redistributions in binary form must reproduce the above copyright 11// notice, this list of conditions and the following disclaimer in the 12// documentation and/or other materials provided with the distribution; 13// neither the name of the copyright holders nor the names of its 14// contributors may be used to endorse or promote products derived from 15// this software without specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28// 29// Authors: Ali Saidi 30// Gabe Black 31 32//////////////////////////////////////////////////////////////////// 33// 34// Mem instructions 35// 36 37def template MemDeclare {{ 38 /** 39 * Static instruction class for "%(mnemonic)s". 40 */ 41 class %(class_name)s : public %(base_class)s 42 { 43 public: 44 45 /// Constructor. 46 %(class_name)s(ExtMachInst machInst); 47 48 %(BasicExecDeclare)s 49 50 %(EACompDeclare)s 51 52 %(InitiateAccDeclare)s 53 54 %(CompleteAccDeclare)s 55 }; 56}}; 57 58let {{ 59 def doMemFormat(code, execute, faultCode, name, Name, asi, opt_flags, postacc_code = ''): 60 addrCalcReg = 'EA = Rs1 + Rs2;' 61 addrCalcImm = 'EA = Rs1 + imm;' 62 iop = InstObjParams(name, Name, 'Mem', 63 {"code": code, "postacc_code" : postacc_code, 64 "fault_check": faultCode, "ea_code": addrCalcReg, 65 "EA_trunc": TruncateEA}, opt_flags) 66 iop_imm = InstObjParams(name, Name + "Imm", 'MemImm', 67 {"code": code, "postacc_code" : postacc_code, 68 "fault_check": faultCode, "ea_code": addrCalcImm, 69 "EA_trunc": TruncateEA}, opt_flags) 70 header_output = MemDeclare.subst(iop) + MemDeclare.subst(iop_imm) 71 decoder_output = BasicConstructor.subst(iop) + BasicConstructor.subst(iop_imm) 72 decode_block = ROrImmDecode.subst(iop) 73 exec_output = doDualSplitExecute(code, postacc_code, addrCalcReg, 74 addrCalcImm, execute, faultCode, name, name + "Imm", 75 Name, Name + "Imm", asi, opt_flags) 76 exec_output += EACompExecute.subst(iop); 77 exec_output += EACompExecute.subst(iop_imm); 78 return (header_output, decoder_output, exec_output, decode_block) 79}}; 80 81def format LoadAlt(code, *opt_flags) {{ 82 code = filterDoubles(code) 83 (header_output, 84 decoder_output, 85 exec_output, 86 decode_block) = doMemFormat(code, LoadFuncs, 87 AlternateASIPrivFaultCheck, name, Name, "EXT_ASI", opt_flags) 88}}; 89 90def format StoreAlt(code, *opt_flags) {{ 91 code = filterDoubles(code) 92 (header_output, 93 decoder_output, 94 exec_output, 95 decode_block) = doMemFormat(code, StoreFuncs, 96 AlternateASIPrivFaultCheck, name, Name, "EXT_ASI", opt_flags) 97}}; 98 99def format Load(code, *opt_flags) {{ 100 code = filterDoubles(code) 101 (header_output, 102 decoder_output, 103 exec_output, 104 decode_block) = doMemFormat(code, 105 LoadFuncs, '', name, Name, 0, opt_flags) 106}}; 107 108def format Store(code, *opt_flags) {{ 109 code = filterDoubles(code) 110 (header_output, 111 decoder_output, 112 exec_output, 113 decode_block) = doMemFormat(code, 114 StoreFuncs, '', name, Name, 0, opt_flags) 115}}; 116 117def format StoreFsr(code, *opt_flags) {{ 118 code = filterDoubles(code) 119 (header_output, 120 decoder_output, 121 exec_output, 122 decode_block) = doMemFormat(code, 123 StoreFuncs, '', name, Name, 0, opt_flags, 124 'Fsr = insertBits(Fsr,16,14,0);') 125}}; 126 127def format TwinLoad(code, *opt_flags) {{ 128 (header_output, 129 decoder_output, 130 exec_output, 131 decode_block) = doMemFormat(code, LoadFuncs, 132 AlternateASIPrivFaultCheck + TwinAlignmentFaultCheck, 133 name, Name, "EXT_ASI", opt_flags) 134}}; 135 136