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comparison CircuitNetlistCreator.c @ 11:a587ea56af8e

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changed directory structure -- thin project repository with this as sub-repo
author Me@portablequad
date Sat, 07 Jan 2012 17:45:10 -0800
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1 /*
2 * Copyright 2011 OpenSourceStewardshipFoundation.org
3 * Licensed under GNU General Public License version 2
4 *
5 * Author: seanhalle@yahoo.com
6 *
7 */
8 #include "HWSim__Hello_World_HW/HWSim__Hello_World_HW.h"
9
10 /*'wire' is an expr resolves to an actual wire struct instance
11 */
12 #define setWireValuesTo( wire, fromTLIdx, outPort, toTLIdx, inPort, dataPtr)\
13 do{\
14 wire.idxOfFromTimeline = fromTLIdx; \
15 wire.idxOfFromOutPort = fromTLIdx; \
16 wire.idxOfToTimeline = toTLIdx; \
17 wire.idxOfToInPort = inPort; \
18 wire.archSpecWireData = dataPtr; \
19 }while(0); //macro magic for namespace
20
21 /*This file constructs the netlist for the Hello World circuit, which is
22 * used during design and implementation of the HWSim language
23 *
24 *It has two timelines, each with one input port and one output port, and
25 * a single span-type.
26 *
27 *The timelines are cross-coupled, so output port of one connects to input
28 * port of the other. The input port has a single trigger, which fires
29 * the one span-type.
30 *
31 *The span does nothing, except send a NULL message on the output port.
32 *The span-sim-time and communication-sim-time are both constants.
33 *
34 *Note that timelines are generic. They are specialized by declaring
35 * inports and outports, and by registering triggers that fire particular
36 * span-types.
37 */
38 HWSimNetlist *createPingPongNetlist()
39 { HWSimNetlist *netlist;
40 NetlistWire *wires;
41 HWSimTimeline **timelines;
42 int numTimelines;
43 int numWires;
44
45 netlist = malloc( sizeof(HWSimNetlist) );
46 //declare timelines numTimelines = 2;
47 timelines = malloc( numTimelines * sizeof(HWSimTimeline) );
48 netlist->numTimelines = numTimelines;
49 netlist->timelines = timelines;
50 netlist->numSpanTypes = 1;
51 netlist->spanTypes = malloc(netlist->numSpanTypes*sizeof(HWSimSpanType*));
52 netlist->spanTypes[PING_PONG_TYPE] = createPingPongSpanType();
53 timelines[0] = createAPingPongTimeline( netlist ); //use info from netlist
54 timelines[1] = createAPingPongTimeline( netlist );
55 //on one of the timelines, make reset trigger an action
56 timelines[1]->inPorts[-1].triggeredSpanType =
57 netlist->spanTypes PING_PONG_TYPE]; //Connect timelines together
58
59 /*OutPorts and InPorts may have many wires attached, but an inPort only
60 * has one kind of span that all incoming communications trigger. That
61 * span can be zero time and then switch on the type of message then
62 * end with a continuation, where the continuation span is chosen by the
63 * switch.
64 *So, a wire only connects an out port to an in port
65 *The format is: sending TL-index, out-port, dest TL-index, in-port
66 */
67 numWires = 2;
68 wires = malloc( numWires * sizeof(NetlistWire) );
69 netlist->numWires = numWires;
70 netlist->wires = wires;
71 //TL 0, out-port 0 to TL 1, in-port 0
72 setWireValuesTo(wires[0], 0,0,1,0, NULL); //These NetlistWires turned into
73 setWireValuesTo(wires[1], 1,0,0,0, NULL); // HWSimWires inside ckt create
74 //TODO: decide how do in-out bidirectional wires -- thinking make it two
75 // separate wires with guard between in-port and out-port
76 //TODO: decide how do guards between ports
77 }
78
79 //Note: copy netlist struct with VMS malloc after VMS initialized
80 HWSimTimeline *
81 createAPingPongTimeline( HWSimNetlist *netlist )
82 { HWSimTimeline *TL;
83 TL = malloc( sizeof(HWSimTimeline) );
84 TL->numInPorts = 1;
85 TL->numOutPorts = 1;
86 TL->inPorts = HWSim_ext__make_inPortsArray( TL->numInPorts );
87 TL->inPorts[-1].triggeredSpanType = IDLE_SPAN; //reset port
88 TL->inPorts[0].triggeredSpanType = netlist->spanTypes[PING_PONG_TYPE];
89 }
90
91 HWSimSpanType *
92 createPingPongSpanType( )
93 { HWSimSpanType *pingPongSpanType;
94 pingPongSpanType = malloc( sizeof(HWSimSpanType) );
95 pingPongSpanType->behaviorFn = &behaviorOf_ping_pong_span;
96 pingPongSpanType->timingFn = &timingOf_ping_pong_span;
97 return pingPongSpanType;
98 }
99