| 1 | /* |
| 2 | * Copyright (c) 1982 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #ifndef lint |
| 8 | static char sccsid[] = "@(#)floattab.c 5.1 (Berkeley) %G%"; |
| 9 | #endif not lint |
| 10 | |
| 11 | #include <stdio.h> |
| 12 | #include "as.h" |
| 13 | #define N NOTAKE |
| 14 | |
| 15 | struct ty_bigdesc ty_bigdesc[] = { |
| 16 | { /* TYPB */ |
| 17 | { 15, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N }, |
| 18 | { N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, 0 }, |
| 19 | { N, N }, |
| 20 | { N, N }, |
| 21 | 0, /* mantissa lshift */ |
| 22 | 0, /* exponent rshift */ |
| 23 | 8, /* mantissa sig bits */ |
| 24 | 0, /* exponent sig bits */ |
| 25 | 8, /* exponent excess */ |
| 26 | }, |
| 27 | { /* TYPW */ |
| 28 | { 14, 15, N, N, N, N, N, N, N, N, N, N, N, N, N, N }, |
| 29 | { N, N, N, N, N, N, N, N, N, N, N, N, N, N, 0, 1 }, |
| 30 | { N, N}, |
| 31 | { N, N}, |
| 32 | 0, /* mantissa lshift */ |
| 33 | 0, /* exponent rshift */ |
| 34 | 16, /* mantissa sig bits */ |
| 35 | 0, /* exponent sig bits */ |
| 36 | 16, /* exponent excess */ |
| 37 | }, |
| 38 | { /* TYPL */ |
| 39 | { 12, 13, 14, 15, N, N, N, N, N, N, N, N, N, N, N, N }, |
| 40 | { N, N, N, N, N, N, N, N, N, N, N, N, 0, 1, 2, 3 }, |
| 41 | { N, N }, |
| 42 | { N, N }, |
| 43 | 0, /* mantissa lshift */ |
| 44 | 0, /* exponent rshift */ |
| 45 | 32, /* mantissa sig bits */ |
| 46 | 0, /* exponent sig bits */ |
| 47 | 32, /* exponent excess */ |
| 48 | }, |
| 49 | { /* TYPQ */ |
| 50 | { 8, 9, 10, 11, 12, 13, 14, 15, N, N, N, N, N, N, N, N }, |
| 51 | { N, N, N, N, N, N, N, N, 0, 1, 2, 3, 4, 5, 6, 7 }, |
| 52 | { N, N }, |
| 53 | { N, N }, |
| 54 | 0, /* mantissa lshift */ |
| 55 | 0, /* exponent rshift */ |
| 56 | 64, /* mantissa sig bits */ |
| 57 | 0, /* exponent sig bits */ |
| 58 | 64, /* exponent excess */ |
| 59 | }, |
| 60 | { /* TYPO */ |
| 61 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, |
| 62 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, |
| 63 | { N, N }, |
| 64 | { N, N }, |
| 65 | 0, /* mantissa lshift */ |
| 66 | 0, /* exponent rshift */ |
| 67 | 128, /* mantissa sig bits */ |
| 68 | 0, /* exponent sig bits */ |
| 69 | 128, /* exponent excess */ |
| 70 | }, |
| 71 | { /* TYPF */ |
| 72 | { 15, N, 13, 14, N, N, N, N, N, N, N, N, N, N, N, N }, |
| 73 | { N, N, N, N, N, N, N, N, N, N, N, N, N, 2, 3, 0 }, |
| 74 | { 0, 1 }, |
| 75 | { 0, 1 }, |
| 76 | 1, /* mantissa lshift */ |
| 77 | 7, /* exponent rshift */ |
| 78 | 24, /* mantissa sig bits */ |
| 79 | 8, /* exponent sig bits */ |
| 80 | 128 /* exponent excess */ |
| 81 | }, |
| 82 | { /* TYPD */ |
| 83 | { 15, N, 13, 14, 11, 12, 9, 10, N, N, N, N, N, N, N, N }, |
| 84 | { N, N, N, N, N, N, N, N, N, 6, 7, 4, 5, 2, 3, 0 }, |
| 85 | { 0, 1 }, |
| 86 | { 0, 1 }, |
| 87 | 1, /* mantissa lshift */ |
| 88 | 7, /* exponent rshift */ |
| 89 | 56, /* mantissa sig bits */ |
| 90 | 8, /* exponent sig bits */ |
| 91 | 128 /* exponent excess */ |
| 92 | }, |
| 93 | { /* TYPG */ |
| 94 | { 15, N, 13, 14, 11, 12, 9, 10, N, N, N, N, N, N, N, N }, |
| 95 | { N, N, N, N, N, N, N, N, N, 6, 7, 4, 5, 2, 3, 0 }, |
| 96 | { 0, 1 }, |
| 97 | { 0, 1 }, |
| 98 | 4, /* mantissa lshift */ |
| 99 | 4, /* exponent rshift */ |
| 100 | 53, /* mantissa sig bits */ |
| 101 | 11, /* exponent sig bits */ |
| 102 | 1024 /* exponent excess */ |
| 103 | }, |
| 104 | { /* TYPH */ |
| 105 | { N, N, 14, 15, 12, 13, 10, 11, 8, 9, 6, 7, 4, 5, 2, 3 }, |
| 106 | { N, N, 14, 15, 12, 13, 10, 11, 8, 9, 6, 7, 4, 5, 2, 3 }, |
| 107 | { 0, 1 }, |
| 108 | { 0, 1 }, |
| 109 | 0, /* mantissa lshift */ |
| 110 | 0, /* exponent rshift */ |
| 111 | 113, /* mantissa sig bits */ |
| 112 | 15, /* exponent sig bits */ |
| 113 | 16384 /* exponent excess */ |
| 114 | }, |
| 115 | {0} /* TYPNONE */ |
| 116 | }; |
| 117 | |
| 118 | cfloattab() |
| 119 | { |
| 120 | reg struct ty_bigdesc *p; |
| 121 | reg int i; |
| 122 | reg int j; |
| 123 | reg int k; |
| 124 | extern int ty_float[]; |
| 125 | |
| 126 | for (i = 0; i < TYPNONE - 1; i++){ |
| 127 | p = &ty_bigdesc[i]; |
| 128 | for (j = 0; j < 16; j++){ |
| 129 | if (((char)p->b_upmmap[j]) != NOTAKE){ |
| 130 | k = p->b_pmmap[p->b_upmmap[j]]; |
| 131 | if (j != k) |
| 132 | printf("%s:p[up[%d]] == %d\n", |
| 133 | ty_string[i],j,k); |
| 134 | } |
| 135 | |
| 136 | if (((char)p->b_pmmap[j]) != NOTAKE){ |
| 137 | k = p->b_upmmap[p->b_pmmap[j]]; |
| 138 | if (j != k) |
| 139 | printf("%s:up[p[%d]] == %d\n", |
| 140 | ty_string[i],j,k); |
| 141 | } |
| 142 | } |
| 143 | if (!ty_float[i]) |
| 144 | continue; |
| 145 | k = (p->b_msigbits - 1) + p->b_mlshift; |
| 146 | if (k % 8) |
| 147 | printf("sigbits: %d, lshift: %d, excess: %d\n", |
| 148 | p->b_msigbits, p->b_mlshift, k % 8); |
| 149 | if ((15 - (k / 8)) < 0) |
| 150 | printf("lsbyte <= 0\n"); |
| 151 | if ( (8 - (p->b_mlshift + 2)) <= 0) |
| 152 | printf("Shifted byte 15 into byte 14"); |
| 153 | if ( 1 << (p->b_esigbits - 1) != p->b_eexcess) |
| 154 | printf("sigbits == %d, excess = %d\n", |
| 155 | p->b_esigbits, p->b_eexcess); |
| 156 | } |
| 157 | } |