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 public static final Mask PACKET_TOKEN = new Mask("v.................................................");
14 public static final Mask PACKET_DATA = new Mask(".vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv............");
15 public static final Mask PACKET_SIGNAL = new Mask("......................................v...........");
16 public static final Mask PACKET_DEST = new Mask(".......................................vvvvvvvvvvv");
18 public static final Mask CBD_SIZE = new Mask("...............................vvvvvv");
19 public static final Mask CBD_OFFSET = new Mask("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv......");
21 public static final int WIDTH_WORD = PACKET_DATA.valmaskwidth;
22 public static final int WIDTH_PACKET = PACKET_TOKEN.width;
24 public static final Mask WHOLE_WORD = new Mask("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");
25 public static final Mask DISPATCH_PATH = new Mask("vvvvvvvvvvv..........................");
26 public static final Mask I = new Mask("...........1.........................");
27 public static final Mask OS = new Mask("............1........................");
28 public static final Mask P = new Mask(".............vvv.....................");
29 public static final Mask P_NOT_A = new Mask(".............000.....................");
30 public static final Mask P_A = new Mask(".............001.....................");
31 public static final Mask P_NOT_B = new Mask(".............010.....................");
32 public static final Mask P_B = new Mask(".............011.....................");
33 public static final Mask P_UNUSED = new Mask(".............100.....................");
34 public static final Mask P_OLC_ZERO = new Mask(".............101.....................");
35 public static final Mask P_OLC_NONZERO = new Mask(".............110.....................");
36 public static final Mask P_ALWAYS = new Mask(".............111.....................");
38 public static final Mask SHIFT = new Mask("................00vvvvvvvvvvvvvvvvvvv");
40 public static final Mask TAIL = new Mask("................11...................");
42 public static final Mask MOVE = new Mask("................01...................");
43 public static final Mask TI = new Mask("..................1..................");
44 public static final Mask DI = new Mask("...................1.................");
45 public static final Mask DC = new Mask("....................1................");
46 public static final Mask DO = new Mask(".....................1...............");
47 public static final Mask TO = new Mask("......................1..............");
48 public static final Mask PATH_IMMEDIATE = new Mask(".......................1vvvvvvvvvvvvv");
49 public static final Mask PATH_DATA = new Mask(".......................01............");
50 public static final Mask PATH_NOCHANGE = new Mask(".......................00............");
52 public static final Mask SET_OLC_FROM_IMMEDIATE = new Mask("................101000100......vvvvvv");
53 public static final Mask SET_OLC_FROM_DATA_LATCH = new Mask("................101000010............");
54 public static final Mask SET_OLC_FROM_OLC_MINUS_ONE = new Mask("................101000001............");
56 public static final Mask SET_ILC_FROM_IMMEDIATE = new Mask("................10010010......0vvvvvv");
57 public static final Mask SET_ILC_FROM_INFINITY = new Mask("................10010010......1......");
58 public static final Mask SET_ILC_FROM_DATA_LATCH = new Mask("................10010001.............");
60 public static final Mask SET_IMMEDIATE = new Mask("................100010.vvvvvvvvvvvvvv");
61 public static final Mask SET_IMMEDIATE_EXTEND = new Mask("................100010v..............");
63 public static final Mask SET_FLAGS = new Mask("................100001...............");
64 public static final Mask SET_FLAGS_A = new Mask("................100001...vvvvvv......");
65 public static final Mask SET_FLAGS_B = new Mask("................100001.........vvvvvv");
66 public static final Mask SET_FLAGS_VALUE_A = new Mask("1.....");
67 public static final Mask SET_FLAGS_VALUE_NOT_A = new Mask(".1....");
68 public static final Mask SET_FLAGS_VALUE_B = new Mask("..1...");
69 public static final Mask SET_FLAGS_VALUE_NOT_B = new Mask("...1..");
70 public static final Mask SET_FLAGS_VALUE_C = new Mask("....1.");
71 public static final Mask SET_FLAGS_VALUE_NOT_C = new Mask(".....1");
73 // Misc //////////////////////////////////////////////////////////////////////////////
75 public static final long DataLatch_WIDTH = SET_IMMEDIATE.valmaskmax-SET_IMMEDIATE.valmaskmin+1; // FIXME: this is an abstraction breakage
76 private static final long mask = ~(-1L << DataLatch_WIDTH);
77 public static boolean isSmallEnoughToFit(long immediate) {
78 if ((immediate & ~mask) == 0) return true;
79 if ((immediate | mask) == -1L) return true;
83 public int getWordWidth() { return 37; }
85 //////////////////////////////////////////////////////////////////////////////
87 /** get the bits describing this box's location on the DESTINATION HORN */
88 // FIXME this should use a BitVector not a long!
89 protected abstract long getDestAddr(Path box);
91 private static final BitVector SIGNAL_ZERO = new BitVector(1);
92 private static final BitVector SIGNAL_ONE = new BitVector(1);
94 SIGNAL_ONE.set(0,true);
97 /** decode a path, given the starting point and the bits that comprise it */
98 // FIXME this should use a BitVector not a long!
99 //protected abstract Path getPathByAddr(Dock source, long dest);
100 public Path getPathByAddr(Dock source, long dest) {
101 for(Ship ship : this)
102 for(Dock bb : ship) {
103 for(Destination d : new Destination[] { bb.getInstructionDestination(), bb.getDataDestination() }) {
104 for(BitVector signal : new BitVector[] { SIGNAL_ZERO, SIGNAL_ONE }) {
105 Path p = (Path)source.getPath(d, signal);
106 if (getDestAddr(p) == dest) return p;
113 /** read a machine-formatted instruction from a file (into a Java object) */
114 public Instruction readInstruction(DataInputStream is, Dock dispatchFrom) throws IOException {
117 inst = (inst << 8) | (is.readByte() & 0xff);
118 inst = (inst << 8) | (is.readByte() & 0xff);
119 inst = (inst << 8) | (is.readByte() & 0xff);
120 inst = (inst << 8) | (is.readByte() & 0xff);
121 inst = (inst << 8) | (is.readByte() & 0xff);
122 inst = (inst << 8) | (is.readByte() & 0xff);
123 return readInstruction(inst, dispatchFrom);
124 } catch (EOFException eof) {
129 public Instruction readInstruction(long inst, Dock dispatchFrom) {
130 Dock dock = getPathByAddr(dispatchFrom, DISPATCH_PATH.getval(inst)).getDestination().getDock();
132 if (TAIL.get(inst)) return new Tail(dock);
134 Predicate predicate = Default;
135 if (P_ALWAYS.get(inst)) predicate = IgnoreOLC;
136 if (P_OLC_NONZERO.get(inst)) predicate = Default;
137 if (P_OLC_ZERO.get(inst)) predicate = OLCZero;
138 if (P_A.get(inst)) predicate = FlagA;
139 if (P_B.get(inst)) predicate = FlagB;
140 if (P_NOT_A.get(inst)) predicate = NotFlagA;
141 if (P_NOT_B.get(inst)) predicate = NotFlagB;
143 boolean looping = !OS.get(inst);
144 if (SHIFT.get(inst)) return new Shift(dock, looping, predicate, new BitVector(dock.getShip().getFleet().getWordWidth()).set(SHIFT.getval(inst)));
145 if (SET_IMMEDIATE.get(inst)) {
146 boolean extend = SET_IMMEDIATE_EXTEND.getval(inst) != 0;
147 long immediate = SET_IMMEDIATE.getval(inst);
148 if (extend) immediate |= (-1L << DataLatch_WIDTH);
149 return new Set(dock, looping, predicate, SetDest.DataLatch, (immediate));
152 if (SET_OLC_FROM_OLC_MINUS_ONE.get(inst))
153 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, SetSource.Decrement);
154 if (SET_OLC_FROM_IMMEDIATE.get(inst))
155 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, (SET_OLC_FROM_IMMEDIATE.getval(inst)));
156 if (SET_ILC_FROM_IMMEDIATE.get(inst))
157 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, (SET_ILC_FROM_IMMEDIATE.getval(inst)));
158 if (SET_OLC_FROM_DATA_LATCH.get(inst))
159 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, SetSource.DataLatch);
160 if (SET_ILC_FROM_DATA_LATCH.get(inst))
161 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, SetSource.DataLatch);
162 if (SET_ILC_FROM_INFINITY.get(inst))
163 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, SetSource.Infinity);
164 if (SET_FLAGS.get(inst)) {
165 long flag_a = SET_FLAGS_A.getval(inst);
166 long flag_b = SET_FLAGS_B.getval(inst);
167 FlagFunction ap = FlagFunction.ZERO;
168 FlagFunction bp = FlagFunction.ZERO;
169 if (SET_FLAGS_VALUE_A .get(flag_a)) ap = ap.add(FlagA );
170 if (SET_FLAGS_VALUE_NOT_A.get(flag_a)) ap = ap.add(NotFlagA );
171 if (SET_FLAGS_VALUE_B .get(flag_a)) ap = ap.add(FlagB );
172 if (SET_FLAGS_VALUE_NOT_B.get(flag_a)) ap = ap.add(NotFlagB );
173 if (SET_FLAGS_VALUE_C .get(flag_a)) ap = ap.add(FlagC );
174 if (SET_FLAGS_VALUE_NOT_C.get(flag_a)) ap = ap.add(NotFlagC );
175 if (SET_FLAGS_VALUE_A .get(flag_b)) bp = bp.add(FlagA );
176 if (SET_FLAGS_VALUE_NOT_A.get(flag_b)) bp = bp.add(NotFlagA );
177 if (SET_FLAGS_VALUE_B .get(flag_b)) bp = bp.add(FlagB );
178 if (SET_FLAGS_VALUE_NOT_B.get(flag_b)) bp = bp.add(NotFlagB );
179 if (SET_FLAGS_VALUE_C .get(flag_b)) bp = bp.add(FlagC );
180 if (SET_FLAGS_VALUE_NOT_C.get(flag_b)) bp = bp.add(NotFlagC );
181 return new Set(dock, looping, predicate, ap, bp);
184 return new Move(dock,
188 getPathByAddr(dock, PATH_IMMEDIATE.getval(inst)),
196 throw new RuntimeException("unknown instruction: 0x" + Long.toString(inst, 16));
199 public long writeInstruction(Instruction d, Dock dispatchFrom) {
203 instr = DISPATCH_PATH.setval(instr, getDestAddr(dispatchFrom.getPath(d.dock.getInstructionDestination(),null)));
207 if (!pi.looping) instr = OS.set(instr);
208 switch(pi.predicate) {
209 case IgnoreOLC: instr = P_ALWAYS.set(instr); break;
210 case OLCZero: instr = P_OLC_ZERO.set(instr); break;
211 case Default: instr = P_OLC_NONZERO.set(instr); break;
212 case FlagA: instr = P_A.set(instr); break;
213 case FlagB: instr = P_B.set(instr); break;
214 case NotFlagA: instr = P_NOT_A.set(instr); break;
215 case NotFlagB: instr = P_NOT_B.set(instr); break;
216 default: throw new RuntimeException("error!");
219 if (d instanceof Tail) {
220 instr = TAIL.set(instr);
222 } else if (d instanceof Shift) {
223 Shift shift = (Shift)d;
224 instr = SHIFT.set(instr);
225 instr = SHIFT.setval(instr, shift.immediate);
227 } else if (d instanceof Set) {
230 case InnerLoopCounter:
233 instr = SET_ILC_FROM_DATA_LATCH.set(instr);
236 instr = SET_ILC_FROM_IMMEDIATE.setval(SET_ILC_FROM_IMMEDIATE.set(instr), s.immediate);
239 instr = SET_ILC_FROM_INFINITY.set(instr);
243 case OuterLoopCounter:
246 instr = SET_OLC_FROM_OLC_MINUS_ONE.set(instr);
249 instr = SET_OLC_FROM_DATA_LATCH.set(instr);
252 instr = SET_OLC_FROM_IMMEDIATE.setval(SET_OLC_FROM_IMMEDIATE.set(instr), s.immediate);
257 instr = SET_FLAGS.set(instr);
258 instr = SET_FLAGS_A.setval(instr, flagFunctionToLong(s.newFlagA));
259 instr = SET_FLAGS_B.setval(instr, flagFunctionToLong(s.newFlagB));
263 instr = SET_IMMEDIATE.set(instr);
264 instr = SET_IMMEDIATE_EXTEND.setval(instr, s.immediate < 0 ? 1 : 0);
265 instr = SET_IMMEDIATE.setval(instr, s.immediate & ~(-1L << DataLatch_WIDTH));
270 } else if (d instanceof Move) {
272 instr = MOVE.set(instr);
273 if (inst.tokenIn) instr = TI.set(instr);
274 if (inst.dataIn) instr = DI.set(instr);
275 if (inst.latchData) instr = DC.set(instr);
276 if (inst.dataOut) instr = DO.set(instr);
277 if (inst.tokenOut) instr = TO.set(instr);
278 if (inst.interruptible) instr = I.set(instr);
280 if (inst.latchPath) instr = PATH_DATA.set(instr);
282 instr = PATH_IMMEDIATE.set(instr);
283 instr = PATH_IMMEDIATE.setval(instr, inst.path==null?0:getDestAddr(inst.path));
287 throw new RuntimeException("unrecognized instruction " + d.getClass().getName());
293 public void writeInstruction(DataOutputStream os, Dock dispatchFrom, Instruction d) throws IOException {
294 long instr = writeInstruction(d, dispatchFrom);
295 for(int i=5; i>=0; i--)
296 os.write(BitManipulations.getIntField(i*8+7, i*8, instr));
299 private static long flagFunctionToLong(FlagFunction ff) {
301 for(Predicate p : ff)
303 case FlagA : ret = SET_FLAGS_VALUE_A .set(ret); break;
304 case NotFlagA : ret = SET_FLAGS_VALUE_NOT_A.set(ret); break;
305 case FlagB : ret = SET_FLAGS_VALUE_B .set(ret); break;
306 case NotFlagB : ret = SET_FLAGS_VALUE_NOT_B.set(ret); break;
307 case FlagC : ret = SET_FLAGS_VALUE_C .set(ret); break;
308 case NotFlagC : ret = SET_FLAGS_VALUE_NOT_C.set(ret); break;
309 default: throw new RuntimeException();