1 package edu.berkeley.fleet.two;
3 import edu.berkeley.fleet.api.*;
4 import edu.berkeley.fleet.util.*;
5 import edu.berkeley.fleet.api.Instruction.Set;
6 import static edu.berkeley.fleet.api.Instruction.Set.*;
7 import static edu.berkeley.fleet.api.Instruction.*;
8 import static edu.berkeley.fleet.api.Predicate.*;
10 /** common subclass for the "FleetTwo" generation of processors, all 37-bit wide, with AM33 encoding */
11 public abstract class FleetTwoFleet extends Fleet {
13 private final boolean hack = "true".equals(System.getProperty("inverted-dc-bit-hack", "false"));
15 public final Mask PACKET_TOKEN;
16 public final Mask PACKET_IS_TOKEN;
17 public final Mask PACKET_DATA;
18 public final Mask PACKET_SIGNAL;
19 public final Mask PACKET_DEST;
21 public final Mask CBD_SIZE;
22 public final Mask CBD_OFFSET;
24 public final Mask WHOLE_WORD;
25 public final Mask DISPATCH_PATH;
26 public final Mask DISPATCH_INSTR;
27 public final Mask NOT_INTERRUPTIBLE;
29 public final Mask P_NOT_A;
30 public final Mask P_A;
31 public final Mask P_NOT_B;
32 public final Mask P_B;
33 public final Mask P_UNUSED;
34 public final Mask P_OLC_ZERO;
35 public final Mask P_OLC_NONZERO;
36 public final Mask P_ALWAYS;
38 public final Mask SHIFT;
40 public final Mask TAIL;
41 public final Mask HEAD;
42 public final Mask ABORT;
44 public final Mask MOVE;
47 public final Mask FLUSH;
51 public final Mask PATH_IMMEDIATE;
52 public final Mask PATH_DATA;
53 public final Mask PATH_NOCHANGE;
55 public final Mask SET_OLC_FROM_IMMEDIATE;
56 public final Mask SET_OLC_FROM_DATA_LATCH;
57 public final Mask SET_OLC_FROM_OLC_MINUS_ONE;
59 public final Mask SET_ILC_FROM_IMMEDIATE;
60 public final Mask SET_ILC_FROM_INFINITY;
61 public final Mask SET_ILC_FROM_DATA_LATCH;
63 public final Mask SET_IMMEDIATE;
64 public final Mask SET_IMMEDIATE_EXTEND;
66 public final Mask SET_FLAGS;
67 public final Mask SET_FLAGS_A;
68 public final Mask SET_FLAGS_B;
69 public final Mask SET_FLAGS_VALUE_A;
70 public final Mask SET_FLAGS_VALUE_NOT_A;
71 public final Mask SET_FLAGS_VALUE_B;
72 public final Mask SET_FLAGS_VALUE_NOT_B;
73 public final Mask SET_FLAGS_VALUE_C;
74 public final Mask SET_FLAGS_VALUE_NOT_C;
76 public final int WIDTH_WORD;
77 public final int WIDTH_PACKET;
79 public final int DataLatch_WIDTH;
80 private final long mask;
82 public FleetTwoFleet() { this(false); }
84 public FleetTwoFleet(boolean useInternalEncoding) {
85 PACKET_TOKEN = new Mask("v.................................................");
86 PACKET_IS_TOKEN = new Mask("1.................................................");
87 PACKET_DATA = new Mask(".vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv............");
88 PACKET_SIGNAL = new Mask("......................................v...........");
89 PACKET_DEST = new Mask(".......................................vvvvvvvvvvv");
91 CBD_SIZE = new Mask("...............................vvvvvv");
92 CBD_OFFSET = new Mask("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv......");
94 WHOLE_WORD = new Mask("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");
96 if (useInternalEncoding) {
98 DISPATCH_PATH = new Mask("v....................................");
99 DISPATCH_INSTR = new Mask(".vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");
100 P = new Mask(".vvvvvv..............................");
101 P_NOT_A = new Mask(".011110..............................");
102 P_A = new Mask(".011101..............................");
103 P_NOT_B = new Mask(".011011..............................");
104 P_B = new Mask(".010111..............................");
105 P_UNUSED = new Mask(".000000..............................");
106 P_OLC_ZERO = new Mask(".101111..............................");
107 P_OLC_NONZERO = new Mask(".011111..............................");
108 P_ALWAYS = new Mask(".111111..............................");
111 // use these when Marina gets updated to 07-Jan-2009 version of internal encoding
112 HEAD = new Mask(".......1.............................");
113 ABORT = new Mask("........1............................");
114 TAIL = new Mask(".........1...........................");
116 // actually "is interruptible"
117 NOT_INTERRUPTIBLE = new Mask("...........1....1....................");
119 SHIFT = new Mask("..........1......1vvvvvvvvvvvvvvvvvvv");
120 SET_IMMEDIATE = new Mask("..........1......0.....vvvvvvvvvvvvvv");
121 SET_IMMEDIATE_EXTEND = new Mask("..........1......0....v..............");
122 MOVE = new Mask("............1........................");
123 TI = new Mask("............1.....1..................");
124 DI = new Mask("............1......1.................");
125 FLUSH = new Mask("..........1......0.....011...........");
126 DC = new Mask("............1.......1................");
127 DO = new Mask("............1........1...............");
128 TO = new Mask("............1.........1..............");
129 PATH_IMMEDIATE = new Mask("............1..........1vvvvvvvvvvvvv");
130 PATH_DATA = new Mask("............1..........00............");
131 PATH_NOCHANGE = new Mask("............1..........01............");
133 SET_OLC_FROM_IMMEDIATE = new Mask("..............1.10.............vvvvvv");
134 SET_OLC_FROM_DATA_LATCH = new Mask("...............1.11..................");
135 SET_OLC_FROM_OLC_MINUS_ONE = new Mask("...............1.10..................");
137 SET_ILC_FROM_IMMEDIATE = new Mask("...............1.00..........0.vvvvvv");
138 SET_ILC_FROM_INFINITY = new Mask("...............1.0...........1.......");
139 SET_ILC_FROM_DATA_LATCH = new Mask("...............1.01..................");
141 SET_FLAGS = new Mask("...............1.....................");
142 SET_FLAGS_A = new Mask("...............1...............vvvvvv");
143 SET_FLAGS_B = new Mask("...............1.........vvvvvv......");
145 SET_FLAGS_VALUE_A = new Mask(".....1");
146 SET_FLAGS_VALUE_NOT_A = new Mask("....1.");
147 SET_FLAGS_VALUE_B = new Mask("...1..");
148 SET_FLAGS_VALUE_NOT_B = new Mask("..1...");
149 SET_FLAGS_VALUE_C = new Mask(".1....");
150 SET_FLAGS_VALUE_NOT_C = new Mask("1.....");
153 DISPATCH_PATH = new Mask("vvvvvvvvvvv..........................");
154 DISPATCH_INSTR = new Mask("...........vvvvvvvvvvvvvvvvvvvvvvvvvv");
155 NOT_INTERRUPTIBLE = new Mask("...........1.........................");
156 P = new Mask(".............vvv.....................");
157 P_NOT_A = new Mask(".............000.....................");
158 P_A = new Mask(".............001.....................");
159 P_NOT_B = new Mask(".............010.....................");
160 P_B = new Mask(".............011.....................");
161 P_UNUSED = new Mask(".............100.....................");
162 P_OLC_ZERO = new Mask(".............101.....................");
163 P_OLC_NONZERO = new Mask(".............110.....................");
164 P_ALWAYS = new Mask(".............111.....................");
166 SHIFT = new Mask("................00vvvvvvvvvvvvvvvvvvv");
168 ABORT = new Mask("................1100................."); // note: has a predicate!
170 HEAD = new Mask("................1110.................");
171 TAIL = new Mask("................1111.................");
173 MOVE = new Mask("................01...................");
174 TI = new Mask("................011..................");
175 DI = new Mask("................01.1.................");
176 FLUSH = new Mask("................01.01................");
177 DC = new Mask("................01.11................");
178 DO = new Mask("................01...1...............");
179 TO = new Mask("................01....1..............");
180 PATH_IMMEDIATE = new Mask("................01.....1vvvvvvvvvvvvv");
181 PATH_DATA = new Mask("................01.....01............");
182 PATH_NOCHANGE = new Mask("................01.....00............");
184 SET_OLC_FROM_IMMEDIATE = new Mask("................101000100......vvvvvv");
185 SET_OLC_FROM_DATA_LATCH = new Mask("................101000010............");
186 SET_OLC_FROM_OLC_MINUS_ONE = new Mask("................101000001............");
188 SET_ILC_FROM_IMMEDIATE = new Mask("................10010010......0vvvvvv");
189 SET_ILC_FROM_INFINITY = new Mask("................10010010......1......");
190 SET_ILC_FROM_DATA_LATCH = new Mask("................10010001.............");
192 SET_IMMEDIATE = new Mask("................100010.vvvvvvvvvvvvvv");
193 SET_IMMEDIATE_EXTEND = new Mask("................100010v..............");
195 SET_FLAGS = new Mask("................100001...............");
196 SET_FLAGS_A = new Mask("................100001...vvvvvv......");
197 SET_FLAGS_B = new Mask("................100001.........vvvvvv");
199 SET_FLAGS_VALUE_A = new Mask("1.....");
200 SET_FLAGS_VALUE_NOT_A = new Mask(".1....");
201 SET_FLAGS_VALUE_B = new Mask("..1...");
202 SET_FLAGS_VALUE_NOT_B = new Mask("...1..");
203 SET_FLAGS_VALUE_C = new Mask("....1.");
204 SET_FLAGS_VALUE_NOT_C = new Mask(".....1");
207 WIDTH_WORD = PACKET_DATA.valmaskwidth;
208 WIDTH_PACKET = PACKET_TOKEN.width;
209 DataLatch_WIDTH = SET_IMMEDIATE.valmaskmax-SET_IMMEDIATE.valmaskmin+1; // FIXME: this is an abstraction breakage
210 mask = ~(-1L << DataLatch_WIDTH);
213 // Misc //////////////////////////////////////////////////////////////////////////////
215 public boolean isSmallEnoughToFit(long immediate) {
216 if ((immediate & ~mask) == 0) return true;
217 if ((immediate | mask) == -1L) return true;
221 public boolean isSmallEnoughToFit(BitVector immediate) {
222 boolean b = immediate.get((int)DataLatch_WIDTH);
223 for(int i=DataLatch_WIDTH+1; i<immediate.length(); i++)
224 if (immediate.get(i) != b) return false;
228 public int getWordWidth() { return 37; }
230 //////////////////////////////////////////////////////////////////////////////
232 /** get the bits describing this box's location on the DESTINATION HORN */
233 protected abstract BitVector getDestAddr(Path box);
235 private static final BitVector SIGNAL_ZERO = new BitVector(1);
236 private static final BitVector SIGNAL_ONE = new BitVector(1).set(0,true);
238 /** decode a path, given the starting point and the bits that comprise it */
239 public Path getPathByAddr(Dock source, BitVector dest) {
240 for(Ship ship : this)
241 for(Dock bb : ship) {
242 for(Destination d : new Destination[] { bb.getInstructionDestination(), bb.getDataDestination() }) {
243 for(BitVector signal : new BitVector[] { SIGNAL_ZERO, SIGNAL_ONE }) {
244 Path p = (Path)source.getPath(d, signal);
245 if (getDestAddr(p).equalsZeroExtended(dest)) return p;
252 public Instruction decodeInstruction(BitVector instruction, Dock dispatchFrom) {
253 return readInstruction(instruction.toLong(), dispatchFrom);
256 public BitVector encodeInstruction(Instruction instr, Dock dispatchFrom) {
257 return new BitVector(getWordWidth()).set(writeInstruction(instr, dispatchFrom));
260 public int getShiftWidth() { return SHIFT.valmaskwidth; }
261 public int getSetWidth() { return SET_IMMEDIATE.valmaskwidth+1; }
263 // FIXME: should use BitVector here
264 public Instruction readInstruction(long inst, Dock dispatchFrom) {
265 Dock dock = getPathByAddr(dispatchFrom, DISPATCH_PATH.getvalAsBitVector(inst)).getDestination().getDock();
267 if (TAIL.get(inst)) return new Tail(dock);
268 if (HEAD.get(inst)) return new Head(dock);
270 Predicate predicate = Default;
271 if (P_ALWAYS.get(inst)) predicate = IgnoreFlagD;
272 if (P_OLC_NONZERO.get(inst)) predicate = Default;
273 if (P_OLC_ZERO.get(inst)) predicate = FlagD;
274 if (P_A.get(inst)) predicate = FlagA;
275 if (P_B.get(inst)) predicate = FlagB;
276 if (P_NOT_A.get(inst)) predicate = NotFlagA;
277 if (P_NOT_B.get(inst)) predicate = NotFlagB;
280 return new Flush(dock, predicate);
282 return new Abort(dock, predicate);
283 if (SHIFT.get(inst)) return new Shift(dock, predicate, new BitVector(dock.getShip().getFleet().getShiftWidth()).set(SHIFT.getval(inst)));
284 if (SET_IMMEDIATE.get(inst)) {
285 boolean extend = SET_IMMEDIATE_EXTEND.getval(inst) != 0;
286 long immediate = SET_IMMEDIATE.getval(inst);
287 if (extend) immediate |= (-1L << DataLatch_WIDTH);
288 return new Set(dock, predicate, SetDest.DataLatch, (immediate));
291 if (SET_OLC_FROM_OLC_MINUS_ONE.get(inst))
292 return new Set(dock, predicate, SetDest.OuterLoopCounter, SetSource.Decrement);
293 if (SET_OLC_FROM_IMMEDIATE.get(inst))
294 return new Set(dock, predicate, SetDest.OuterLoopCounter, (SET_OLC_FROM_IMMEDIATE.getval(inst)));
295 if (SET_ILC_FROM_IMMEDIATE.get(inst))
296 return new Set(dock, predicate, SetDest.InnerLoopCounter, (SET_ILC_FROM_IMMEDIATE.getval(inst)));
297 if (SET_OLC_FROM_DATA_LATCH.get(inst))
298 return new Set(dock, predicate, SetDest.OuterLoopCounter, SetSource.DataLatch);
299 if (SET_ILC_FROM_DATA_LATCH.get(inst))
300 return new Set(dock, predicate, SetDest.InnerLoopCounter, SetSource.DataLatch);
301 if (SET_ILC_FROM_INFINITY.get(inst))
302 return new Set(dock, predicate, SetDest.InnerLoopCounter, SetSource.Infinity);
303 if (SET_FLAGS.get(inst)) {
304 long flag_a = SET_FLAGS_A.getval(inst);
305 long flag_b = SET_FLAGS_B.getval(inst);
306 FlagFunction ap = FlagFunction.ZERO;
307 FlagFunction bp = FlagFunction.ZERO;
308 if (SET_FLAGS_VALUE_A .get(flag_a)) ap = ap.add(FlagA );
309 if (SET_FLAGS_VALUE_NOT_A.get(flag_a)) ap = ap.add(NotFlagA );
310 if (SET_FLAGS_VALUE_B .get(flag_a)) ap = ap.add(FlagB );
311 if (SET_FLAGS_VALUE_NOT_B.get(flag_a)) ap = ap.add(NotFlagB );
312 if (SET_FLAGS_VALUE_C .get(flag_a)) ap = ap.add(FlagC );
313 if (SET_FLAGS_VALUE_NOT_C.get(flag_a)) ap = ap.add(NotFlagC );
314 if (SET_FLAGS_VALUE_A .get(flag_b)) bp = bp.add(FlagA );
315 if (SET_FLAGS_VALUE_NOT_A.get(flag_b)) bp = bp.add(NotFlagA );
316 if (SET_FLAGS_VALUE_B .get(flag_b)) bp = bp.add(FlagB );
317 if (SET_FLAGS_VALUE_NOT_B.get(flag_b)) bp = bp.add(NotFlagB );
318 if (SET_FLAGS_VALUE_C .get(flag_b)) bp = bp.add(FlagC );
319 if (SET_FLAGS_VALUE_NOT_C.get(flag_b)) bp = bp.add(NotFlagC );
320 return new Set(dock, predicate, ap, bp);
323 return new Move(dock,
325 !NOT_INTERRUPTIBLE.get(inst),
326 PATH_DATA.get(inst)?null:getPathByAddr(dock, PATH_IMMEDIATE.getvalAsBitVector(inst)),
329 hack?(!DC.get(inst)):DC.get(inst),
334 throw new RuntimeException("unknown instruction: 0x" + Long.toString(inst, 16));
337 // FIXME: should use BitVector here
338 public long writeInstruction(Instruction d, Dock dispatchFrom) {
341 if (d.dock != null) {
342 BitVector bv = getDestAddr(dispatchFrom.getPath(d.dock.getInstructionDestination(),null));
343 BitVector bv2 = new BitVector(DISPATCH_PATH.valmaskwidth);
344 for(int i=0; i<Math.min(bv.length(),bv2.length()); i++)
345 bv2.set(i, bv.get(i));
346 instr = DISPATCH_PATH.setval(instr, bv2);
351 switch(pi.predicate) {
352 case IgnoreFlagD: instr = P_ALWAYS.set(instr); break;
353 case FlagD: instr = P_OLC_ZERO.set(instr); break;
354 case Default: instr = P_OLC_NONZERO.set(instr); break;
355 case FlagA: instr = P_A.set(instr); break;
356 case FlagB: instr = P_B.set(instr); break;
357 case NotFlagA: instr = P_NOT_A.set(instr); break;
358 case NotFlagB: instr = P_NOT_B.set(instr); break;
359 default: throw new RuntimeException("error!");
362 if (d instanceof Tail) {
363 instr = TAIL.set(instr);
365 } else if (d instanceof Head) {
366 instr = HEAD.set(instr);
368 } else if (d instanceof Shift) {
369 Shift shift = (Shift)d;
370 instr = SHIFT.set(instr);
371 instr = SHIFT.setval(instr, shift.immediate);
373 } else if (d instanceof Flush) {
374 instr = FLUSH.set(instr);
376 } else if (d instanceof Abort) {
377 instr = ABORT.set(instr);
379 } else if (d instanceof Set) {
382 case InnerLoopCounter:
385 instr = SET_ILC_FROM_DATA_LATCH.set(instr);
388 instr = SET_ILC_FROM_IMMEDIATE.setval(SET_ILC_FROM_IMMEDIATE.set(instr), s.immediate);
391 instr = SET_ILC_FROM_INFINITY.set(instr);
395 case OuterLoopCounter:
398 instr = SET_OLC_FROM_OLC_MINUS_ONE.set(instr);
401 instr = SET_OLC_FROM_DATA_LATCH.set(instr);
404 instr = SET_OLC_FROM_IMMEDIATE.setval(SET_OLC_FROM_IMMEDIATE.set(instr), s.immediate);
409 instr = SET_FLAGS.set(instr);
410 instr = SET_FLAGS_A.setval(instr, flagFunctionToLong(s.newFlagA));
411 instr = SET_FLAGS_B.setval(instr, flagFunctionToLong(s.newFlagB));
415 instr = SET_IMMEDIATE.set(instr);
416 instr = SET_IMMEDIATE_EXTEND.setval(instr, s.immediate < 0 ? 1 : 0);
417 instr = SET_IMMEDIATE.setval(instr, s.immediate & ~(-1L << DataLatch_WIDTH));
422 } else if (d instanceof Move) {
424 instr = MOVE.set(instr);
425 if (inst.tokenIn) instr = TI.set(instr);
426 if (inst.dataIn) instr = DI.set(instr);
428 if (!inst.latchData) instr = DC.set(instr);
429 System.err.println("WARNING: employing inverted-Dc-bit hack -- DO NOT FORGET TO DISABLE THIS WHEN THE NETLIST GETS UPDATED!");
431 if (inst.latchData) instr = DC.set(instr);
433 if (inst.dataOut) instr = DO.set(instr);
434 if (inst.tokenOut) instr = TO.set(instr);
435 if (!inst.interruptible) instr = NOT_INTERRUPTIBLE.set(instr);
437 if (inst.latchPath) instr = PATH_DATA.set(instr);
438 else if (inst.path!=null) {
439 instr = PATH_IMMEDIATE.set(instr);
440 BitVector bv = getDestAddr(inst.path);
441 BitVector bv2 = new BitVector(PATH_IMMEDIATE.valmaskwidth);
442 for(int i=0; i<Math.min(bv.length(),bv2.length()); i++)
443 bv2.set(i, bv.get(i));
444 instr = PATH_IMMEDIATE.setval(instr, bv2);
446 instr = PATH_NOCHANGE.set(instr);
450 throw new RuntimeException("unrecognized instruction " + d.getClass().getName());
456 private long flagFunctionToLong(FlagFunction ff) {
458 for(Predicate p : ff)
460 case FlagA : ret = SET_FLAGS_VALUE_A .set(ret); break;
461 case NotFlagA : ret = SET_FLAGS_VALUE_NOT_A.set(ret); break;
462 case FlagB : ret = SET_FLAGS_VALUE_B .set(ret); break;
463 case NotFlagB : ret = SET_FLAGS_VALUE_NOT_B.set(ret); break;
464 case FlagC : ret = SET_FLAGS_VALUE_C .set(ret); break;
465 case NotFlagC : ret = SET_FLAGS_VALUE_NOT_C.set(ret); break;
466 default: throw new RuntimeException();