| 1 | /* Copyright (c) 1981 Regents of the University of California */ |
| 2 | |
| 3 | /* @(#)ffs_tables.c 1.3 %G% */ |
| 4 | |
| 5 | #include "../h/param.h" |
| 6 | |
| 7 | /* partab.c 4.2 81/03/08 */ |
| 8 | |
| 9 | /* |
| 10 | * Table giving parity for characters and indicating |
| 11 | * character classes to tty driver. In particular, |
| 12 | * if the low 6 bits are 0, then the character needs |
| 13 | * no special processing on output. |
| 14 | */ |
| 15 | |
| 16 | unsigned char partab[] = { |
| 17 | 0001,0201,0201,0001,0201,0001,0001,0201, |
| 18 | 0202,0004,0003,0201,0005,0206,0201,0001, |
| 19 | 0201,0001,0001,0201,0001,0201,0201,0001, |
| 20 | 0001,0201,0201,0001,0201,0001,0001,0201, |
| 21 | 0200,0000,0000,0200,0000,0200,0200,0000, |
| 22 | 0000,0200,0200,0000,0200,0000,0000,0200, |
| 23 | 0000,0200,0200,0000,0200,0000,0000,0200, |
| 24 | 0200,0000,0000,0200,0000,0200,0200,0000, |
| 25 | 0200,0000,0000,0200,0000,0200,0200,0000, |
| 26 | 0000,0200,0200,0000,0200,0000,0000,0200, |
| 27 | 0000,0200,0200,0000,0200,0000,0000,0200, |
| 28 | 0200,0000,0000,0200,0000,0200,0200,0000, |
| 29 | 0000,0200,0200,0000,0200,0000,0000,0200, |
| 30 | 0200,0000,0000,0200,0000,0200,0200,0000, |
| 31 | 0200,0000,0000,0200,0000,0200,0200,0000, |
| 32 | 0000,0200,0200,0000,0200,0000,0000,0201, |
| 33 | |
| 34 | /* |
| 35 | * 7 bit ascii ends with the last character above, |
| 36 | * but we contine through all 256 codes for the sake |
| 37 | * of the tty output routines which use special vax |
| 38 | * instructions which need a 256 character trt table. |
| 39 | */ |
| 40 | |
| 41 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 42 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 43 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 44 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 45 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 46 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 47 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 48 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 49 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 50 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 51 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 52 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 53 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 54 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 55 | 0007,0007,0007,0007,0007,0007,0007,0007, |
| 56 | 0007,0007,0007,0007,0007,0007,0007,0007 |
| 57 | }; |
| 58 | |
| 59 | /* |
| 60 | * bit patterns for identifying fragments in the block map |
| 61 | * used as ((map & around) == inside) |
| 62 | */ |
| 63 | int around[9] = { |
| 64 | 0x3, 0x7, 0xf, 0x1f, 0x3f, 0x7f, 0xff, 0x1ff, 0x3ff |
| 65 | }; |
| 66 | int inside[9] = { |
| 67 | 0x0, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * given a block map bit pattern, the frag tables tell whether a |
| 72 | * particular size fragment is available. |
| 73 | * |
| 74 | * used as: |
| 75 | * if ((1 << (size - 1)) & fragtbl[fs->fs_frag][map] { |
| 76 | * at least one fragment of the indicated size is available |
| 77 | * } |
| 78 | * |
| 79 | * These tables are used by the scanc instruction on the VAX to |
| 80 | * quickly find an appropriate fragment. |
| 81 | */ |
| 82 | |
| 83 | unsigned char fragtbl1[256] = { |
| 84 | 0x0, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 85 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 86 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 87 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 88 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 89 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 90 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 91 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 92 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 93 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 94 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 95 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 96 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 97 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 98 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 99 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 100 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 101 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 102 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 103 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 104 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 105 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 106 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 107 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 108 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 109 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 110 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 111 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 112 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 113 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 114 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 115 | 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, |
| 116 | }; |
| 117 | |
| 118 | unsigned char fragtbl2[256] = { |
| 119 | 0x0, 0x1, 0x1, 0x2, 0x1, 0x1, 0x1, 0x3, |
| 120 | 0x1, 0x1, 0x1, 0x3, 0x2, 0x3, 0x3, 0x2, |
| 121 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 122 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 123 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 124 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 125 | 0x2, 0x3, 0x3, 0x2, 0x3, 0x3, 0x3, 0x3, |
| 126 | 0x3, 0x3, 0x3, 0x3, 0x2, 0x3, 0x3, 0x2, |
| 127 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 128 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 129 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 130 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 131 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 132 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 133 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 134 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 135 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 136 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 137 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 138 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 139 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x1, 0x3, |
| 140 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 141 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 142 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 143 | 0x2, 0x3, 0x3, 0x2, 0x3, 0x3, 0x3, 0x3, |
| 144 | 0x3, 0x3, 0x3, 0x3, 0x2, 0x3, 0x3, 0x2, |
| 145 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 146 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 147 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 148 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, |
| 149 | 0x2, 0x3, 0x3, 0x2, 0x3, 0x3, 0x3, 0x3, |
| 150 | 0x3, 0x3, 0x3, 0x3, 0x2, 0x3, 0x3, 0x2, |
| 151 | }; |
| 152 | |
| 153 | unsigned char fragtbl4[256] = { |
| 154 | 0x0, 0x1, 0x1, 0x2, 0x1, 0x1, 0x2, 0x4, |
| 155 | 0x1, 0x1, 0x1, 0x3, 0x2, 0x3, 0x4, 0x8, |
| 156 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 157 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 158 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 159 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 160 | 0x2, 0x3, 0x3, 0x2, 0x3, 0x3, 0x2, 0x6, |
| 161 | 0x3, 0x3, 0x3, 0x3, 0x2, 0x3, 0x6, 0xa, |
| 162 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 163 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 164 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 165 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 166 | 0x2, 0x3, 0x3, 0x2, 0x3, 0x3, 0x2, 0x6, |
| 167 | 0x3, 0x3, 0x3, 0x3, 0x2, 0x3, 0x6, 0xa, |
| 168 | 0x4, 0x5, 0x5, 0x6, 0x5, 0x5, 0x6, 0x4, |
| 169 | 0x5, 0x5, 0x5, 0x7, 0x6, 0x7, 0x4, 0xc, |
| 170 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 171 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 172 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 173 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 174 | 0x1, 0x1, 0x1, 0x3, 0x1, 0x1, 0x3, 0x5, |
| 175 | 0x1, 0x1, 0x1, 0x3, 0x3, 0x3, 0x5, 0x9, |
| 176 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x7, |
| 177 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x7, 0xb, |
| 178 | 0x2, 0x3, 0x3, 0x2, 0x3, 0x3, 0x2, 0x6, |
| 179 | 0x3, 0x3, 0x3, 0x3, 0x2, 0x3, 0x6, 0xa, |
| 180 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x7, |
| 181 | 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x7, 0xb, |
| 182 | 0x4, 0x5, 0x5, 0x6, 0x5, 0x5, 0x6, 0x4, |
| 183 | 0x5, 0x5, 0x5, 0x7, 0x6, 0x7, 0x4, 0xc, |
| 184 | 0x8, 0x9, 0x9, 0xa, 0x9, 0x9, 0xa, 0xc, |
| 185 | 0x9, 0x9, 0x9, 0xb, 0xa, 0xb, 0xc, 0x8, |
| 186 | }; |
| 187 | |
| 188 | unsigned char fragtbl8[256] = { |
| 189 | 0x00, 0x01, 0x01, 0x02, 0x01, 0x01, 0x02, 0x04, |
| 190 | 0x01, 0x01, 0x01, 0x03, 0x02, 0x03, 0x04, 0x08, |
| 191 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 192 | 0x02, 0x03, 0x03, 0x02, 0x04, 0x05, 0x08, 0x10, |
| 193 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 194 | 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 195 | 0x02, 0x03, 0x03, 0x02, 0x03, 0x03, 0x02, 0x06, |
| 196 | 0x04, 0x05, 0x05, 0x06, 0x08, 0x09, 0x10, 0x20, |
| 197 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 198 | 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 199 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 200 | 0x03, 0x03, 0x03, 0x03, 0x05, 0x05, 0x09, 0x11, |
| 201 | 0x02, 0x03, 0x03, 0x02, 0x03, 0x03, 0x02, 0x06, |
| 202 | 0x03, 0x03, 0x03, 0x03, 0x02, 0x03, 0x06, 0x0a, |
| 203 | 0x04, 0x05, 0x05, 0x06, 0x05, 0x05, 0x06, 0x04, |
| 204 | 0x08, 0x09, 0x09, 0x0a, 0x10, 0x11, 0x20, 0x40, |
| 205 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 206 | 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 207 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 208 | 0x03, 0x03, 0x03, 0x03, 0x05, 0x05, 0x09, 0x11, |
| 209 | 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x03, 0x05, |
| 210 | 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x05, 0x09, |
| 211 | 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x07, |
| 212 | 0x05, 0x05, 0x05, 0x07, 0x09, 0x09, 0x11, 0x21, |
| 213 | 0x02, 0x03, 0x03, 0x02, 0x03, 0x03, 0x02, 0x06, |
| 214 | 0x03, 0x03, 0x03, 0x03, 0x02, 0x03, 0x06, 0x0a, |
| 215 | 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x07, |
| 216 | 0x02, 0x03, 0x03, 0x02, 0x06, 0x07, 0x0a, 0x12, |
| 217 | 0x04, 0x05, 0x05, 0x06, 0x05, 0x05, 0x06, 0x04, |
| 218 | 0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x04, 0x0c, |
| 219 | 0x08, 0x09, 0x09, 0x0a, 0x09, 0x09, 0x0a, 0x0c, |
| 220 | 0x10, 0x11, 0x11, 0x12, 0x20, 0x21, 0x40, 0x80, |
| 221 | }; |
| 222 | |
| 223 | /* |
| 224 | * the actual fragtbl array |
| 225 | */ |
| 226 | unsigned char *fragtbl[MAXFRAG + 1] = { |
| 227 | 0, fragtbl1, fragtbl2, 0, fragtbl4, 0, 0, 0, fragtbl8, |
| 228 | }; |