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;
30 public final Mask P_NOT_A;
31 public final Mask P_A;
32 public final Mask P_NOT_B;
33 public final Mask P_B;
34 public final Mask P_UNUSED;
35 public final Mask P_OLC_ZERO;
36 public final Mask P_OLC_NONZERO;
37 public final Mask P_ALWAYS;
39 public final Mask SHIFT;
41 public final Mask TAIL;
42 public final Mask HEAD;
43 public final Mask ABORT;
45 public final Mask MOVE;
48 public final Mask FLUSH;
52 public final Mask PATH_IMMEDIATE;
53 public final Mask PATH_DATA;
54 public final Mask PATH_NOCHANGE;
56 public final Mask SET_OLC_FROM_IMMEDIATE;
57 public final Mask SET_OLC_FROM_DATA_LATCH;
58 public final Mask SET_OLC_FROM_OLC_MINUS_ONE;
60 public final Mask SET_ILC_FROM_IMMEDIATE;
61 public final Mask SET_ILC_FROM_INFINITY;
62 public final Mask SET_ILC_FROM_DATA_LATCH;
64 public final Mask SET_IMMEDIATE;
65 public final Mask SET_IMMEDIATE_EXTEND;
67 public final Mask SET_FLAGS;
68 public final Mask SET_FLAGS_A;
69 public final Mask SET_FLAGS_B;
70 public final Mask SET_FLAGS_VALUE_A;
71 public final Mask SET_FLAGS_VALUE_NOT_A;
72 public final Mask SET_FLAGS_VALUE_B;
73 public final Mask SET_FLAGS_VALUE_NOT_B;
74 public final Mask SET_FLAGS_VALUE_C;
75 public final Mask SET_FLAGS_VALUE_NOT_C;
77 public final int WIDTH_WORD;
78 public final int WIDTH_PACKET;
80 public final long DataLatch_WIDTH;
81 private final long mask;
83 public FleetTwoFleet() { this(false); }
85 public FleetTwoFleet(boolean useInternalEncoding) {
86 PACKET_TOKEN = new Mask("v.................................................");
87 PACKET_IS_TOKEN = new Mask("1.................................................");
88 PACKET_DATA = new Mask(".vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv............");
89 PACKET_SIGNAL = new Mask("......................................v...........");
90 PACKET_DEST = new Mask(".......................................vvvvvvvvvvv");
92 CBD_SIZE = new Mask("...............................vvvvvv");
93 CBD_OFFSET = new Mask("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv......");
95 WHOLE_WORD = new Mask("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");
97 if (useInternalEncoding) {
99 DISPATCH_PATH = new Mask("v....................................");
100 DISPATCH_INSTR = new Mask(".vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");
101 NOT_INTERRUPTIBLE = new Mask(".................1...................");
102 OS = new Mask(".......1.............................");
103 P = new Mask(".vvvvvv..............................");
104 P_NOT_A = new Mask(".011110..............................");
105 P_A = new Mask(".011101..............................");
106 P_NOT_B = new Mask(".011011..............................");
107 P_B = new Mask(".010111..............................");
108 P_UNUSED = new Mask(".000000..............................");
109 P_OLC_ZERO = new Mask(".101111..............................");
110 P_OLC_NONZERO = new Mask(".011111..............................");
111 P_ALWAYS = new Mask(".111111..............................");
113 SHIFT = new Mask("..........101111.1vvvvvvvvvvvvvvvvvvv");
116 // use these when Marina gets updated to 07-Jan-2009 version of internal encoding
117 HEAD = new Mask(".......1.............................");
118 ABORT = new Mask("........1............................");
119 TAIL = new Mask(".........1...........................");
122 TAIL = new Mask("................1...................0");
126 MOVE = new Mask("..........110111.....................");
127 TI = new Mask("..........110111..1..................");
128 DI = new Mask("..........110111...1.................");
129 FLUSH = new Mask(".........1110111.....................");
130 DC = new Mask("..........110111....1................");
131 DO = new Mask("..........110111.....1...............");
132 TO = new Mask("..........110111......1..............");
133 PATH_IMMEDIATE = new Mask("..........110111.......1vvvvvvvvvvvvv");
134 PATH_DATA = new Mask("..........110111.......00............");
135 PATH_NOCHANGE = new Mask("..........110111.......01............");
137 SET_OLC_FROM_IMMEDIATE = new Mask("..........111101.0.............vvvvvv");
138 SET_OLC_FROM_DATA_LATCH = new Mask("..........111101.1...................");
139 SET_OLC_FROM_OLC_MINUS_ONE = new Mask("..........111011.....................");
141 SET_ILC_FROM_IMMEDIATE = new Mask("..........011111.0...........0.vvvvvv");
142 SET_ILC_FROM_INFINITY = new Mask("..........011111.............1.......");
143 SET_ILC_FROM_DATA_LATCH = new Mask("..........011111.1...................");
145 SET_IMMEDIATE = new Mask("..........101111.0.....vvvvvvvvvvvvvv");
146 SET_IMMEDIATE_EXTEND = new Mask("..........101111.0....v..............");
148 SET_FLAGS = new Mask("..........111110.....................");
149 SET_FLAGS_A = new Mask("..........111110...............vvvvvv");
150 SET_FLAGS_B = new Mask("..........111110.........vvvvvv......");
152 SET_FLAGS_VALUE_A = new Mask(".....1");
153 SET_FLAGS_VALUE_NOT_A = new Mask("....1.");
154 SET_FLAGS_VALUE_B = new Mask("...1..");
155 SET_FLAGS_VALUE_NOT_B = new Mask("..1...");
156 SET_FLAGS_VALUE_C = new Mask(".1....");
157 SET_FLAGS_VALUE_NOT_C = new Mask("1.....");
160 DISPATCH_PATH = new Mask("vvvvvvvvvvv..........................");
161 DISPATCH_INSTR = new Mask("...........vvvvvvvvvvvvvvvvvvvvvvvvvv");
162 NOT_INTERRUPTIBLE = new Mask("...........1.........................");
163 OS = new Mask("............1........................");
164 P = new Mask(".............vvv.....................");
165 P_NOT_A = new Mask(".............000.....................");
166 P_A = new Mask(".............001.....................");
167 P_NOT_B = new Mask(".............010.....................");
168 P_B = new Mask(".............011.....................");
169 P_UNUSED = new Mask(".............100.....................");
170 P_OLC_ZERO = new Mask(".............101.....................");
171 P_OLC_NONZERO = new Mask(".............110.....................");
172 P_ALWAYS = new Mask(".............111.....................");
174 SHIFT = new Mask("................00vvvvvvvvvvvvvvvvvvv");
176 ABORT = new Mask("................1100................."); // note: has a predicate!
178 HEAD = new Mask("................1110.................");
179 TAIL = new Mask("................1111.................");
181 MOVE = new Mask("................01...................");
182 TI = new Mask("................011..................");
183 DI = new Mask("................01.1.................");
184 FLUSH = new Mask("................01.01................");
185 DC = new Mask("................01.11................");
186 DO = new Mask("................01...1...............");
187 TO = new Mask("................01....1..............");
188 PATH_IMMEDIATE = new Mask("................01.....1vvvvvvvvvvvvv");
189 PATH_DATA = new Mask("................01.....01............");
190 PATH_NOCHANGE = new Mask("................01.....00............");
192 SET_OLC_FROM_IMMEDIATE = new Mask("................101000100......vvvvvv");
193 SET_OLC_FROM_DATA_LATCH = new Mask("................101000010............");
194 SET_OLC_FROM_OLC_MINUS_ONE = new Mask("................101000001............");
196 SET_ILC_FROM_IMMEDIATE = new Mask("................10010010......0vvvvvv");
197 SET_ILC_FROM_INFINITY = new Mask("................10010010......1......");
198 SET_ILC_FROM_DATA_LATCH = new Mask("................10010001.............");
200 SET_IMMEDIATE = new Mask("................100010.vvvvvvvvvvvvvv");
201 SET_IMMEDIATE_EXTEND = new Mask("................100010v..............");
203 SET_FLAGS = new Mask("................100001...............");
204 SET_FLAGS_A = new Mask("................100001...vvvvvv......");
205 SET_FLAGS_B = new Mask("................100001.........vvvvvv");
207 SET_FLAGS_VALUE_A = new Mask("1.....");
208 SET_FLAGS_VALUE_NOT_A = new Mask(".1....");
209 SET_FLAGS_VALUE_B = new Mask("..1...");
210 SET_FLAGS_VALUE_NOT_B = new Mask("...1..");
211 SET_FLAGS_VALUE_C = new Mask("....1.");
212 SET_FLAGS_VALUE_NOT_C = new Mask(".....1");
215 WIDTH_WORD = PACKET_DATA.valmaskwidth;
216 WIDTH_PACKET = PACKET_TOKEN.width;
217 DataLatch_WIDTH = SET_IMMEDIATE.valmaskmax-SET_IMMEDIATE.valmaskmin+1; // FIXME: this is an abstraction breakage
218 mask = ~(-1L << DataLatch_WIDTH);
221 // Misc //////////////////////////////////////////////////////////////////////////////
223 public boolean isSmallEnoughToFit(long immediate) {
224 if ((immediate & ~mask) == 0) return true;
225 if ((immediate | mask) == -1L) return true;
229 public int getWordWidth() { return 37; }
231 //////////////////////////////////////////////////////////////////////////////
233 /** get the bits describing this box's location on the DESTINATION HORN */
234 protected abstract BitVector getDestAddr(Path box);
236 private static final BitVector SIGNAL_ZERO = new BitVector(1);
237 private static final BitVector SIGNAL_ONE = new BitVector(1).set(0,true);
239 /** decode a path, given the starting point and the bits that comprise it */
240 public Path getPathByAddr(Dock source, BitVector dest) {
241 for(Ship ship : this)
242 for(Dock bb : ship) {
243 for(Destination d : new Destination[] { bb.getInstructionDestination(), bb.getDataDestination() }) {
244 for(BitVector signal : new BitVector[] { SIGNAL_ZERO, SIGNAL_ONE }) {
245 Path p = (Path)source.getPath(d, signal);
246 if (getDestAddr(p).equalsZeroExtended(dest)) return p;
253 public Instruction decodeInstruction(BitVector instruction, Dock dispatchFrom) {
254 return readInstruction(instruction.toLong(), dispatchFrom);
257 public BitVector encodeInstruction(Instruction instr, Dock dispatchFrom) {
258 return new BitVector(getWordWidth()).set(writeInstruction(instr, dispatchFrom));
261 public int getShiftWidth() { return SHIFT.valmaskwidth; }
262 public int getSetWidth() { return SET_IMMEDIATE.valmaskwidth+1; }
264 // FIXME: should use BitVector here
265 public Instruction readInstruction(long inst, Dock dispatchFrom) {
266 Dock dock = getPathByAddr(dispatchFrom, DISPATCH_PATH.getvalAsBitVector(inst)).getDestination().getDock();
268 if (TAIL.get(inst)) return new Tail(dock);
269 if (HEAD.get(inst)) return new Head(dock);
271 Predicate predicate = Default;
272 if (P_ALWAYS.get(inst)) predicate = IgnoreFlagD;
273 if (P_OLC_NONZERO.get(inst)) predicate = Default;
274 if (P_OLC_ZERO.get(inst)) predicate = FlagD;
275 if (P_A.get(inst)) predicate = FlagA;
276 if (P_B.get(inst)) predicate = FlagB;
277 if (P_NOT_A.get(inst)) predicate = NotFlagA;
278 if (P_NOT_B.get(inst)) predicate = NotFlagB;
280 boolean looping = !OS.get(inst);
282 return new Flush(dock, looping, predicate);
284 return new Abort(dock, predicate);
285 if (SHIFT.get(inst)) return new Shift(dock, looping, predicate, new BitVector(dock.getShip().getFleet().getShiftWidth()).set(SHIFT.getval(inst)));
286 if (SET_IMMEDIATE.get(inst)) {
287 boolean extend = SET_IMMEDIATE_EXTEND.getval(inst) != 0;
288 long immediate = SET_IMMEDIATE.getval(inst);
289 if (extend) immediate |= (-1L << DataLatch_WIDTH);
290 return new Set(dock, looping, predicate, SetDest.DataLatch, (immediate));
293 if (SET_OLC_FROM_OLC_MINUS_ONE.get(inst))
294 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, SetSource.Decrement);
295 if (SET_OLC_FROM_IMMEDIATE.get(inst))
296 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, (SET_OLC_FROM_IMMEDIATE.getval(inst)));
297 if (SET_ILC_FROM_IMMEDIATE.get(inst))
298 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, (SET_ILC_FROM_IMMEDIATE.getval(inst)));
299 if (SET_OLC_FROM_DATA_LATCH.get(inst))
300 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, SetSource.DataLatch);
301 if (SET_ILC_FROM_DATA_LATCH.get(inst))
302 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, SetSource.DataLatch);
303 if (SET_ILC_FROM_INFINITY.get(inst))
304 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, SetSource.Infinity);
305 if (SET_FLAGS.get(inst)) {
306 long flag_a = SET_FLAGS_A.getval(inst);
307 long flag_b = SET_FLAGS_B.getval(inst);
308 FlagFunction ap = FlagFunction.ZERO;
309 FlagFunction bp = FlagFunction.ZERO;
310 if (SET_FLAGS_VALUE_A .get(flag_a)) ap = ap.add(FlagA );
311 if (SET_FLAGS_VALUE_NOT_A.get(flag_a)) ap = ap.add(NotFlagA );
312 if (SET_FLAGS_VALUE_B .get(flag_a)) ap = ap.add(FlagB );
313 if (SET_FLAGS_VALUE_NOT_B.get(flag_a)) ap = ap.add(NotFlagB );
314 if (SET_FLAGS_VALUE_C .get(flag_a)) ap = ap.add(FlagC );
315 if (SET_FLAGS_VALUE_NOT_C.get(flag_a)) ap = ap.add(NotFlagC );
316 if (SET_FLAGS_VALUE_A .get(flag_b)) bp = bp.add(FlagA );
317 if (SET_FLAGS_VALUE_NOT_A.get(flag_b)) bp = bp.add(NotFlagA );
318 if (SET_FLAGS_VALUE_B .get(flag_b)) bp = bp.add(FlagB );
319 if (SET_FLAGS_VALUE_NOT_B.get(flag_b)) bp = bp.add(NotFlagB );
320 if (SET_FLAGS_VALUE_C .get(flag_b)) bp = bp.add(FlagC );
321 if (SET_FLAGS_VALUE_NOT_C.get(flag_b)) bp = bp.add(NotFlagC );
322 return new Set(dock, looping, predicate, ap, bp);
325 return new Move(dock,
328 !NOT_INTERRUPTIBLE.get(inst),
329 getPathByAddr(dock, PATH_IMMEDIATE.getvalAsBitVector(inst)),
332 hack?(!DC.get(inst)):DC.get(inst),
337 throw new RuntimeException("unknown instruction: 0x" + Long.toString(inst, 16));
340 // FIXME: should use BitVector here
341 public long writeInstruction(Instruction d, Dock dispatchFrom) {
344 if (d.dock != null) {
345 BitVector bv = getDestAddr(dispatchFrom.getPath(d.dock.getInstructionDestination(),null));
346 BitVector bv2 = new BitVector(DISPATCH_PATH.valmaskwidth);
347 for(int i=0; i<Math.min(bv.length(),bv2.length()); i++)
348 bv2.set(i, bv.get(i));
349 instr = DISPATCH_PATH.setval(instr, bv2);
354 if (!pi.looping) instr = OS.set(instr);
355 switch(pi.predicate) {
356 case IgnoreFlagD: instr = P_ALWAYS.set(instr); break;
357 case FlagD: instr = P_OLC_ZERO.set(instr); break;
358 case Default: instr = P_OLC_NONZERO.set(instr); break;
359 case FlagA: instr = P_A.set(instr); break;
360 case FlagB: instr = P_B.set(instr); break;
361 case NotFlagA: instr = P_NOT_A.set(instr); break;
362 case NotFlagB: instr = P_NOT_B.set(instr); break;
363 default: throw new RuntimeException("error!");
366 if (d instanceof Tail) {
367 instr = TAIL.set(instr);
369 } else if (d instanceof Head) {
370 instr = HEAD.set(instr);
372 } else if (d instanceof Shift) {
373 Shift shift = (Shift)d;
374 instr = SHIFT.set(instr);
375 instr = SHIFT.setval(instr, shift.immediate);
377 } else if (d instanceof Flush) {
378 instr = FLUSH.set(instr);
380 } else if (d instanceof Abort) {
381 instr = ABORT.set(instr);
383 } else if (d instanceof Set) {
386 case InnerLoopCounter:
389 instr = SET_ILC_FROM_DATA_LATCH.set(instr);
392 instr = SET_ILC_FROM_IMMEDIATE.setval(SET_ILC_FROM_IMMEDIATE.set(instr), s.immediate);
395 instr = SET_ILC_FROM_INFINITY.set(instr);
399 case OuterLoopCounter:
402 instr = SET_OLC_FROM_OLC_MINUS_ONE.set(instr);
405 instr = SET_OLC_FROM_DATA_LATCH.set(instr);
408 instr = SET_OLC_FROM_IMMEDIATE.setval(SET_OLC_FROM_IMMEDIATE.set(instr), s.immediate);
413 instr = SET_FLAGS.set(instr);
414 instr = SET_FLAGS_A.setval(instr, flagFunctionToLong(s.newFlagA));
415 instr = SET_FLAGS_B.setval(instr, flagFunctionToLong(s.newFlagB));
419 instr = SET_IMMEDIATE.set(instr);
420 instr = SET_IMMEDIATE_EXTEND.setval(instr, s.immediate < 0 ? 1 : 0);
421 instr = SET_IMMEDIATE.setval(instr, s.immediate & ~(-1L << DataLatch_WIDTH));
426 } else if (d instanceof Move) {
428 instr = MOVE.set(instr);
429 if (inst.tokenIn) instr = TI.set(instr);
430 if (inst.dataIn) instr = DI.set(instr);
432 if (!inst.latchData) instr = DC.set(instr);
433 System.err.println("WARNING: employing inverted-Dc-bit hack -- DO NOT FORGET TO DISABLE THIS WHEN THE NETLIST GETS UPDATED!");
435 if (inst.latchData) instr = DC.set(instr);
437 if (inst.dataOut) instr = DO.set(instr);
438 if (inst.tokenOut) instr = TO.set(instr);
439 if (!inst.interruptible) instr = NOT_INTERRUPTIBLE.set(instr);
441 if (inst.latchPath) instr = PATH_DATA.set(instr);
442 else if (inst.path!=null) {
443 instr = PATH_IMMEDIATE.set(instr);
444 BitVector bv = getDestAddr(inst.path);
445 BitVector bv2 = new BitVector(PATH_IMMEDIATE.valmaskwidth);
446 for(int i=0; i<Math.min(bv.length(),bv2.length()); i++)
447 bv2.set(i, bv.get(i));
448 instr = PATH_IMMEDIATE.setval(instr, bv2);
450 instr = PATH_NOCHANGE.set(instr);
454 throw new RuntimeException("unrecognized instruction " + d.getClass().getName());
460 private long flagFunctionToLong(FlagFunction ff) {
462 for(Predicate p : ff)
464 case FlagA : ret = SET_FLAGS_VALUE_A .set(ret); break;
465 case NotFlagA : ret = SET_FLAGS_VALUE_NOT_A.set(ret); break;
466 case FlagB : ret = SET_FLAGS_VALUE_B .set(ret); break;
467 case NotFlagB : ret = SET_FLAGS_VALUE_NOT_B.set(ret); break;
468 case FlagC : ret = SET_FLAGS_VALUE_C .set(ret); break;
469 case NotFlagC : ret = SET_FLAGS_VALUE_NOT_C.set(ret); break;
470 default: throw new RuntimeException();