FreeCalypso > hg > ueda-linux
annotate ueda/uschem-netlist/pinconn.c @ 135:25634b3977a9
ueda: unet2tedax added
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 07 Sep 2020 01:22:36 +0000 |
parents | cd92449fdb51 |
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rev | line source |
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1 /* |
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2 * Recording of pin connections |
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3 */ |
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4 |
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5 #include <stdio.h> |
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6 #include <strings.h> |
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7 #include "../libueda/mcl.h" |
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8 #include "netlist.h" |
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9 |
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10 extern char *malloc(); |
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11 |
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12 int total_pin_connections; |
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13 int total_expl_noconnects; |
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14 |
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15 extern struct net noconnect_pseudo_net; |
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16 |
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17 struct pinconn * |
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18 alloc_pinconn() |
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19 { |
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20 register struct pinconn *pc; |
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21 |
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22 pc = (struct pinconn *) malloc(sizeof(struct pinconn)); |
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23 if (!pc) { |
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24 perror("malloc"); |
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25 exit(1); |
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26 } |
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27 bzero(pc, sizeof(struct pinconn)); |
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28 return(pc); |
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29 } |
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30 |
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31 static |
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32 report_connection(pc) |
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33 register struct pinconn *pc; |
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34 { |
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35 register struct net *n; |
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36 |
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37 n = pc->net; |
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38 if (n->netname) |
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39 fprintf(stderr, "assigned to net %s by %s line %d\n", |
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40 n->netname, pc->origin_file, pc->origin_line); |
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41 else |
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42 fprintf(stderr, "assigned to an unnamed net by %s line %d\n", |
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43 pc->origin_file, pc->origin_line); |
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44 } |
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45 |
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46 record_pin_connection(pc) |
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47 register struct pinconn *pc; |
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48 { |
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49 register struct nlcomp *nlc; |
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50 register struct net *n; |
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51 int stat; |
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52 |
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53 nlc = pc->comp; |
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54 if (nlc->npins) |
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55 stat = record_pin_connection_tab(pc); |
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56 else |
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57 stat = record_pin_connection_chain(pc); |
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58 if (stat) |
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59 return(stat); |
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60 n = pc->net; |
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61 pc->next_in_net = n->pins; |
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62 n->pins = pc; |
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63 n->npoints++; |
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64 if (n != &noconnect_pseudo_net) { |
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65 nlc->nconnects++; |
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66 total_pin_connections++; |
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67 } else |
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68 total_expl_noconnects++; |
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69 return(0); |
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70 } |
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71 |
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72 static |
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73 record_pin_connection_tab(pc) |
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74 register struct pinconn *pc; |
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75 { |
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76 register struct nlcomp *nlc; |
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77 register int n; |
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78 |
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79 nlc = pc->comp; |
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80 n = atoi(pc->pinnum); |
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81 if (n < 1 || n > nlc->npins) { |
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82 fprintf(stderr, "%s: line %d: %s pin number %s is invalid\n", |
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83 pc->origin_file, pc->origin_line, nlc->mclcomp->name, |
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84 pc->pinnum); |
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85 exit(1); |
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86 } |
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87 n--; |
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88 if (nlc->pintab[n]) { |
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89 if (nlc->pintab[n]->net == pc->net) /* same pin to same net? */ |
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90 return(1); /* redundant but harmless */ |
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91 fprintf(stderr, |
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92 "%s pin %s is connected to more than one net:\n", |
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93 nlc->mclcomp->name, pc->pinnum); |
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94 report_connection(nlc->pintab[n]); |
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95 report_connection(pc); |
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96 exit(1); |
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97 } |
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98 nlc->pintab[n] = pc; |
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99 return(0); |
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100 } |
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101 |
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102 static |
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103 record_pin_connection_chain(pc) |
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104 register struct pinconn *pc; |
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105 { |
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106 struct nlcomp *nlc; |
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107 struct component *comp; |
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108 register struct pinconn *s, **sp; |
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109 |
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110 nlc = pc->comp; |
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111 comp = nlc->mclcomp; |
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112 for (sp = &nlc->pinchain; s = *sp; sp = &s->next_in_comp) |
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113 if (!strcmp(s->pinnum, pc->pinnum)) { |
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114 if (s->net == pc->net) /* same pin to same net? */ |
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115 return(1); /* redundant but harmless */ |
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116 fprintf(stderr, |
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117 "%s pin %s is connected to more than one net:\n", |
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118 comp->name, pc->pinnum); |
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119 report_connection(s); |
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120 report_connection(pc); |
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121 exit(1); |
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122 } |
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123 *sp = pc; |
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124 return(0); |
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125 } |