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 DISPATCH_PATH = new Mask("vvvvvvvvvvv..........................");
25 public static final Mask I = new Mask("...........1.........................");
26 public static final Mask OS = new Mask("............1........................");
27 public static final Mask P = new Mask(".............vvv.....................");
28 public static final Mask P_NOT_A = new Mask(".............000.....................");
29 public static final Mask P_A = new Mask(".............001.....................");
30 public static final Mask P_NOT_B = new Mask(".............010.....................");
31 public static final Mask P_B = new Mask(".............011.....................");
32 public static final Mask P_UNUSED = new Mask(".............100.....................");
33 public static final Mask P_OLC_ZERO = new Mask(".............101.....................");
34 public static final Mask P_OLC_NONZERO = new Mask(".............110.....................");
35 public static final Mask P_ALWAYS = new Mask(".............111.....................");
37 public static final Mask SHIFT = new Mask("................00vvvvvvvvvvvvvvvvvvv");
39 public static final Mask TAIL = new Mask("................11...................");
41 public static final Mask MOVE = new Mask("................01...................");
42 public static final Mask TI = new Mask("..................1..................");
43 public static final Mask DI = new Mask("...................1.................");
44 public static final Mask DC = new Mask("....................1................");
45 public static final Mask DO = new Mask(".....................1...............");
46 public static final Mask TO = new Mask("......................1..............");
47 public static final Mask PATH_IMMEDIATE = new Mask(".......................1vvvvvvvvvvvvv");
48 public static final Mask PATH_DATA = new Mask(".......................01............");
49 public static final Mask PATH_NOCHANGE = new Mask(".......................00............");
51 public static final Mask SET_OLC_FROM_IMMEDIATE = new Mask("................101000100......vvvvvv");
52 public static final Mask SET_OLC_FROM_DATA_LATCH = new Mask("................101000010............");
53 public static final Mask SET_OLC_FROM_OLC_MINUS_ONE = new Mask("................101000001............");
55 public static final Mask SET_ILC_FROM_IMMEDIATE = new Mask("................10010010......0vvvvvv");
56 public static final Mask SET_ILC_FROM_INFINITY = new Mask("................10010010......1......");
57 public static final Mask SET_ILC_FROM_DATA_LATCH = new Mask("................10010001.............");
59 public static final Mask SET_IMMEDIATE = new Mask("................100010.vvvvvvvvvvvvvv");
60 public static final Mask SET_IMMEDIATE_EXTEND = new Mask("................100010v..............");
62 public static final Mask SET_FLAGS = new Mask("................100001...............");
63 public static final Mask SET_FLAGS_A = new Mask("................100001...vvvvvv......");
64 public static final Mask SET_FLAGS_B = new Mask("................100001.........vvvvvv");
65 public static final Mask SET_FLAGS_VALUE_A = new Mask("1.....");
66 public static final Mask SET_FLAGS_VALUE_NOT_A = new Mask(".1....");
67 public static final Mask SET_FLAGS_VALUE_B = new Mask("..1...");
68 public static final Mask SET_FLAGS_VALUE_NOT_B = new Mask("...1..");
69 public static final Mask SET_FLAGS_VALUE_C = new Mask("....1.");
70 public static final Mask SET_FLAGS_VALUE_NOT_C = new Mask(".....1");
72 // Misc //////////////////////////////////////////////////////////////////////////////
74 public static final long DataLatch_WIDTH = SET_IMMEDIATE.valmaskmax-SET_IMMEDIATE.valmaskmin+1; // FIXME: this is an abstraction breakage
75 private static final long mask = ~(-1L << DataLatch_WIDTH);
76 public static boolean isSmallEnoughToFit(long immediate) {
77 if ((immediate & ~mask) == 0) return true;
78 if ((immediate | mask) == -1L) return true;
82 public int getWordWidth() { return 37; }
84 //////////////////////////////////////////////////////////////////////////////
86 /** get the bits describing this box's location on the DESTINATION HORN */
87 // FIXME this should use a BitVector not a long!
88 protected abstract long getDestAddr(Path box);
90 private static final BitVector SIGNAL_ZERO = new BitVector(1);
91 private static final BitVector SIGNAL_ONE = new BitVector(1);
93 SIGNAL_ONE.set(0,true);
96 /** decode a path, given the starting point and the bits that comprise it */
97 // FIXME this should use a BitVector not a long!
98 //protected abstract Path getPathByAddr(Dock source, long dest);
99 public Path getPathByAddr(Dock source, long dest) {
100 for(Ship ship : this)
101 for(Dock bb : ship) {
102 for(Destination d : new Destination[] { bb.getInstructionDestination(), bb.getDataDestination() }) {
103 for(BitVector signal : new BitVector[] { SIGNAL_ZERO, SIGNAL_ONE }) {
104 Path p = (Path)source.getPath(d, signal);
105 if (getDestAddr(p) == dest) return p;
112 /** read a machine-formatted instruction from a file (into a Java object) */
113 public Instruction readInstruction(DataInputStream is, Dock dispatchFrom) throws IOException {
116 inst = (inst << 8) | (is.readByte() & 0xff);
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 return readInstruction(inst, dispatchFrom);
123 } catch (EOFException eof) {
128 public Instruction readInstruction(long inst, Dock dispatchFrom) {
129 Dock dock = getPathByAddr(dispatchFrom, DISPATCH_PATH.getval(inst)).getDestination().getDock();
131 if (TAIL.get(inst)) return new Tail(dock);
133 Predicate predicate = Default;
134 if (P_ALWAYS.get(inst)) predicate = IgnoreOLC;
135 if (P_OLC_ZERO.get(inst)) throw new RuntimeException("not yet supported");
136 if (P_OLC_NONZERO.get(inst)) predicate = Default;
137 if (P_A.get(inst)) predicate = FlagA;
138 if (P_B.get(inst)) predicate = FlagB;
139 if (P_NOT_A.get(inst)) predicate = NotFlagA;
140 if (P_NOT_B.get(inst)) predicate = NotFlagB;
142 boolean looping = !OS.get(inst);
143 if (SHIFT.get(inst)) return new Shift(dock, looping, predicate, new BitVector(dock.getShip().getFleet().getWordWidth()).set(SHIFT.getval(inst)));
144 if (SET_IMMEDIATE.get(inst)) {
145 boolean extend = SET_IMMEDIATE_EXTEND.getval(inst) != 0;
146 long immediate = SET_IMMEDIATE.getval(inst);
147 if (extend) immediate |= (-1L << DataLatch_WIDTH);
148 return new Set(dock, looping, predicate, SetDest.DataLatch, (immediate));
151 if (SET_OLC_FROM_OLC_MINUS_ONE.get(inst))
152 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, SetSource.Decrement);
153 if (SET_OLC_FROM_IMMEDIATE.get(inst))
154 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, (SET_OLC_FROM_IMMEDIATE.getval(inst)));
155 if (SET_ILC_FROM_IMMEDIATE.get(inst))
156 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, (SET_ILC_FROM_IMMEDIATE.getval(inst)));
157 if (SET_OLC_FROM_DATA_LATCH.get(inst))
158 return new Set(dock, looping, predicate, SetDest.OuterLoopCounter, SetSource.DataLatch);
159 if (SET_ILC_FROM_DATA_LATCH.get(inst))
160 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, SetSource.DataLatch);
161 if (SET_ILC_FROM_INFINITY.get(inst))
162 return new Set(dock, looping, predicate, SetDest.InnerLoopCounter, SetSource.Infinity);
163 if (SET_FLAGS.get(inst)) {
164 long flag_a = SET_FLAGS_A.getval(inst);
165 long flag_b = SET_FLAGS_B.getval(inst);
166 FlagFunction ap = FlagFunction.ZERO;
167 FlagFunction bp = FlagFunction.ZERO;
168 if (SET_FLAGS_VALUE_A .get(flag_a)) ap = ap.add(FlagA );
169 if (SET_FLAGS_VALUE_NOT_A.get(flag_a)) ap = ap.add(NotFlagA );
170 if (SET_FLAGS_VALUE_B .get(flag_a)) ap = ap.add(FlagB );
171 if (SET_FLAGS_VALUE_NOT_B.get(flag_a)) ap = ap.add(NotFlagB );
172 if (SET_FLAGS_VALUE_C .get(flag_a)) ap = ap.add(FlagC );
173 if (SET_FLAGS_VALUE_NOT_C.get(flag_a)) ap = ap.add(NotFlagC );
174 if (SET_FLAGS_VALUE_A .get(flag_b)) bp = bp.add(FlagA );
175 if (SET_FLAGS_VALUE_NOT_A.get(flag_b)) bp = bp.add(NotFlagA );
176 if (SET_FLAGS_VALUE_B .get(flag_b)) bp = bp.add(FlagB );
177 if (SET_FLAGS_VALUE_NOT_B.get(flag_b)) bp = bp.add(NotFlagB );
178 if (SET_FLAGS_VALUE_C .get(flag_b)) bp = bp.add(FlagC );
179 if (SET_FLAGS_VALUE_NOT_C.get(flag_b)) bp = bp.add(NotFlagC );
180 return new Set(dock, looping, predicate, ap, bp);
183 return new Move(dock,
187 getPathByAddr(dock, PATH_IMMEDIATE.getval(inst)),
195 throw new RuntimeException("unknown instruction: 0x" + Long.toString(inst, 16));
198 public long writeInstruction(Instruction d, Dock dispatchFrom) {
202 instr = DISPATCH_PATH.setval(instr, getDestAddr(dispatchFrom.getPath(d.dock.getInstructionDestination(),null)));
206 if (!pi.looping) instr = OS.set(instr);
207 switch(pi.predicate) {
208 case IgnoreOLC: instr = P_ALWAYS.set(instr); break;
209 case Default: instr = P_OLC_NONZERO.set(instr); break;
210 case FlagA: instr = P_A.set(instr); break;
211 case FlagB: instr = P_B.set(instr); break;
212 case NotFlagA: instr = P_NOT_A.set(instr); break;
213 case NotFlagB: instr = P_NOT_B.set(instr); break;
216 if (d instanceof Tail) {
217 instr = TAIL.set(instr);
219 } else if (d instanceof Shift) {
220 Shift shift = (Shift)d;
221 instr = SHIFT.set(instr);
222 instr = SHIFT.setval(instr, shift.immediate);
224 } else if (d instanceof Set) {
227 case InnerLoopCounter:
230 instr = SET_ILC_FROM_DATA_LATCH.set(instr);
233 instr = SET_ILC_FROM_IMMEDIATE.setval(SET_ILC_FROM_IMMEDIATE.set(instr), s.immediate);
236 instr = SET_ILC_FROM_INFINITY.set(instr);
240 case OuterLoopCounter:
243 instr = SET_OLC_FROM_OLC_MINUS_ONE.set(instr);
246 instr = SET_OLC_FROM_DATA_LATCH.set(instr);
249 instr = SET_OLC_FROM_IMMEDIATE.setval(SET_OLC_FROM_IMMEDIATE.set(instr), s.immediate);
254 instr = SET_FLAGS.set(instr);
255 instr = SET_FLAGS_A.setval(instr, flagFunctionToLong(s.newFlagA));
256 instr = SET_FLAGS_B.setval(instr, flagFunctionToLong(s.newFlagB));
260 instr = SET_IMMEDIATE.set(instr);
261 instr = SET_IMMEDIATE_EXTEND.setval(instr, s.immediate < 0 ? 1 : 0);
262 instr = SET_IMMEDIATE.setval(instr, s.immediate & ~(-1L << DataLatch_WIDTH));
267 } else if (d instanceof Move) {
269 instr = MOVE.set(instr);
270 if (inst.tokenIn) instr = TI.set(instr);
271 if (inst.dataIn) instr = DI.set(instr);
272 if (inst.latchData) instr = DC.set(instr);
273 if (inst.dataOut) instr = DO.set(instr);
274 if (inst.tokenOut) instr = TO.set(instr);
275 if (inst.interruptible) instr = I.set(instr);
277 if (inst.latchPath) instr = PATH_DATA.set(instr);
279 instr = PATH_IMMEDIATE.set(instr);
280 instr = PATH_IMMEDIATE.setval(instr, inst.path==null?0:getDestAddr(inst.path));
284 throw new RuntimeException("unrecognized instruction " + d.getClass().getName());
290 public void writeInstruction(DataOutputStream os, Dock dispatchFrom, Instruction d) throws IOException {
291 long instr = writeInstruction(d, dispatchFrom);
292 for(int i=5; i>=0; i--)
293 os.write(BitManipulations.getIntField(i*8+7, i*8, instr));
296 private static long flagFunctionToLong(FlagFunction ff) {
298 for(Predicate p : ff)
300 case FlagA : ret = SET_FLAGS_VALUE_A .set(ret); break;
301 case NotFlagA : ret = SET_FLAGS_VALUE_NOT_A.set(ret); break;
302 case FlagB : ret = SET_FLAGS_VALUE_B .set(ret); break;
303 case NotFlagB : ret = SET_FLAGS_VALUE_NOT_B.set(ret); break;
304 case FlagC : ret = SET_FLAGS_VALUE_C .set(ret); break;
305 case NotFlagC : ret = SET_FLAGS_VALUE_NOT_C.set(ret); break;
306 default: throw new RuntimeException();