basicmem.isa revision 4040:eb894f3fc168
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}, opt_flags) 61 iop_imm = InstObjParams(name, Name + "Imm", 'MemImm', 62 {"code": code, "postacc_code" : postacc_code, 63 "fault_check": faultCode, "ea_code": addrCalcImm}, opt_flags) 64 header_output = MemDeclare.subst(iop) + MemDeclare.subst(iop_imm) 65 decoder_output = BasicConstructor.subst(iop) + BasicConstructor.subst(iop_imm) 66 decode_block = ROrImmDecode.subst(iop) 67 exec_output = doDualSplitExecute(code, postacc_code, addrCalcReg, 68 addrCalcImm, execute, faultCode, name, name + "Imm", 69 Name, Name + "Imm", asi, opt_flags) 70 return (header_output, decoder_output, exec_output, decode_block) 71}}; 72 73def format LoadAlt(code, asi, *opt_flags) {{ 74 (header_output, 75 decoder_output, 76 exec_output, 77 decode_block) = doMemFormat(code, LoadFuncs, 78 AlternateASIPrivFaultCheck, name, Name, asi, opt_flags) 79}}; 80 81def format StoreAlt(code, asi, *opt_flags) {{ 82 (header_output, 83 decoder_output, 84 exec_output, 85 decode_block) = doMemFormat(code, StoreFuncs, 86 AlternateASIPrivFaultCheck, name, Name, asi, opt_flags) 87}}; 88 89def format Load(code, *opt_flags) {{ 90 (header_output, 91 decoder_output, 92 exec_output, 93 decode_block) = doMemFormat(code, 94 LoadFuncs, '', name, Name, 0, opt_flags) 95}}; 96 97def format Store(code, *opt_flags) {{ 98 (header_output, 99 decoder_output, 100 exec_output, 101 decode_block) = doMemFormat(code, 102 StoreFuncs, '', name, Name, 0, opt_flags) 103}}; 104 105def format TwinLoad(code, asi, *opt_flags) {{ 106 (header_output, 107 decoder_output, 108 exec_output, 109 decode_block) = doMemFormat(code, LoadFuncs, 110 AlternateASIPrivFaultCheck + TwinAlignmentFaultCheck, 111 name, Name, asi, opt_flags) 112}}; 113 114