1/*
2 * Copyright (c) 2004-2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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82 typedef typename Impl::DynInstPtr DynInstPtr;
83
84 int size;
85
86 DynInstPtr insts[Impl::MaxWidth];
87
88 bool squash[Impl::MaxThreads];
89 bool branchMispredict[Impl::MaxThreads];
90 bool branchTaken[Impl::MaxThreads];
91 Addr mispredPC[Impl::MaxThreads];
92 TheISA::PCState pc[Impl::MaxThreads];
93 InstSeqNum squashedSeqNum[Impl::MaxThreads];
94
95 bool includeSquashInst[Impl::MaxThreads];
96};
97

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102 int size;
103
104 DynInstPtr insts[Impl::MaxWidth];
105};
106
107/** Struct that defines all backwards communication. */
108template<class Impl>
109struct TimeBufStruct {
110 struct decodeComm {
111 bool squash;
112 bool predIncorrect;
113 uint64_t branchAddr;
114
115 InstSeqNum doneSeqNum;
116
117 // @todo: Might want to package this kind of branch stuff into a single
118 // struct as it is used pretty frequently.
119 bool branchMispredict;
120 bool branchTaken;
121 Addr mispredPC;
122 TheISA::PCState nextPC;
123
124 unsigned branchCount;
125 };
126
127 decodeComm decodeInfo[Impl::MaxThreads];

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151 bool usedROB;
152 unsigned freeROBEntries;
153 bool emptyROB;
154
155 bool squash;
156 bool robSquashing;
157
158 bool branchMispredict;
159 bool branchTaken;
160 Addr mispredPC;
161 TheISA::PCState pc;
162
163 // Represents the instruction that has either been retired or
164 // squashed. Similar to having a single bus that broadcasts the
165 // retired or squashed sequence number.
166 InstSeqNum doneSeqNum;
167
168 //Just in case we want to do a commit/squash on a cycle
169 //(necessary for multiple ROBs?)
170 bool commitInsts;
171 InstSeqNum squashSeqNum;
172
173 // Communication specifically to the IQ to tell the IQ that it can
174 // schedule a non-speculative instruction.
175 InstSeqNum nonSpecSeqNum;
176
177 // Hack for now to send back an uncached access to the IEW stage.
178 typedef typename Impl::DynInstPtr DynInstPtr;
179 bool uncached;
180 DynInstPtr uncachedLoad;
181
182 bool interruptPending;
183 bool clearInterrupt;
184 };
185
186 commitComm commitInfo[Impl::MaxThreads];

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