basicmem.isa revision 4648:173a212f5091
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 30//////////////////////////////////////////////////////////////////// 31// 32// Mem instructions 33// 34 35def template MemDeclare {{ 36 /** 37 * Static instruction class for "%(mnemonic)s". 38 */ 39 class %(class_name)s : public %(base_class)s 40 { 41 public: 42 43 /// Constructor. 44 %(class_name)s(ExtMachInst machInst); 45 46 %(BasicExecDeclare)s 47 48 %(InitiateAccDeclare)s 49 50 %(CompleteAccDeclare)s 51 }; 52}}; 53 54let {{ 55 def doMemFormat(code, execute, faultCode, name, Name, asi, opt_flags, postacc_code = ''): 56 addrCalcReg = 'EA = Rs1 + Rs2;' 57 addrCalcImm = 'EA = Rs1 + imm;' 58 iop = InstObjParams(name, Name, 'Mem', 59 {"code": code, "postacc_code" : postacc_code, 60 "fault_check": faultCode, "ea_code": addrCalcReg, 61 "EA_trunc": TruncateEA}, opt_flags) 62 iop_imm = InstObjParams(name, Name + "Imm", 'MemImm', 63 {"code": code, "postacc_code" : postacc_code, 64 "fault_check": faultCode, "ea_code": addrCalcImm, 65 "EA_trunc": TruncateEA}, opt_flags) 66 header_output = MemDeclare.subst(iop) + MemDeclare.subst(iop_imm) 67 decoder_output = BasicConstructor.subst(iop) + BasicConstructor.subst(iop_imm) 68 decode_block = ROrImmDecode.subst(iop) 69 exec_output = doDualSplitExecute(code, postacc_code, addrCalcReg, 70 addrCalcImm, execute, faultCode, name, name + "Imm", 71 Name, Name + "Imm", asi, opt_flags) 72 return (header_output, decoder_output, exec_output, decode_block) 73}}; 74 75def format LoadAlt(code, asi, *opt_flags) {{ 76 code = filterDoubles(code) 77 (header_output, 78 decoder_output, 79 exec_output, 80 decode_block) = doMemFormat(code, LoadFuncs, 81 AlternateASIPrivFaultCheck, name, Name, asi, opt_flags) 82}}; 83 84def format StoreAlt(code, asi, *opt_flags) {{ 85 code = filterDoubles(code) 86 (header_output, 87 decoder_output, 88 exec_output, 89 decode_block) = doMemFormat(code, StoreFuncs, 90 AlternateASIPrivFaultCheck, name, Name, asi, opt_flags) 91}}; 92 93def format Load(code, *opt_flags) {{ 94 code = filterDoubles(code) 95 (header_output, 96 decoder_output, 97 exec_output, 98 decode_block) = doMemFormat(code, 99 LoadFuncs, '', name, Name, 0, opt_flags) 100}}; 101 102def format Store(code, *opt_flags) {{ 103 code = filterDoubles(code) 104 (header_output, 105 decoder_output, 106 exec_output, 107 decode_block) = doMemFormat(code, 108 StoreFuncs, '', name, Name, 0, opt_flags) 109}}; 110 111def format TwinLoad(code, asi, *opt_flags) {{ 112 (header_output, 113 decoder_output, 114 exec_output, 115 decode_block) = doMemFormat(code, LoadFuncs, 116 AlternateASIPrivFaultCheck + TwinAlignmentFaultCheck, 117 name, Name, asi, opt_flags) 118}}; 119 120