| 1 | #ifndef VVS_STDLIB_HEAP |
| 2 | #define VVS_STDLIB_HEAP |
| 3 | |
| 4 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 5 | @ Name: |
| 6 | @ memset (11000) |
| 7 | @ Description: |
| 8 | @ Writes 'pattern' in memory locations 'startaddr' to 'startaddr+count'. |
| 9 | @ Call Stack: |
| 10 | @ pattern |
| 11 | @ startaddr |
| 12 | @ count <-- TOS |
| 13 | @ Return Stack: |
| 14 | @ <empty> |
| 15 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 16 | NSSVTTSSSN | Mark: 11000 (memset) |
| 17 | SSSTTN | PUSH 3 |
| 18 | NSTTTTTTN | JSR > 11111 (spew) |
| 19 | |
| 20 | @ Store 'pattern' into one memory location on each pass through this loop. |
| 21 | NSSVSSSTTSSSSSSSSSSSN | Mark: 00011000 00000000 |
| 22 | SSSTN | PUSH 1 (ptr) |
| 23 | TTT | LOAD |
| 24 | SSSTSN | PUSH 2 (ptr) |
| 25 | TTT | LOAD |
| 26 | TSSS | ADD |
| 27 | SSSTTN | PUSH 3 (ptr) |
| 28 | TTT | LOAD |
| 29 | TTS | STORE |
| 30 | |
| 31 | @ Decrement and check for loop end condition 'count == 0'. |
| 32 | SSSTN | PUSH 1 (ptr) |
| 33 | TTT | LOAD |
| 34 | SNS | DUP |
| 35 | NTSSSSTTSSSSSSSSSSTN | BRZ > 00011000 00000001 |
| 36 | SSSTN | PUSH 1 |
| 37 | TSST | SUBTRACT |
| 38 | SSSTN | PUSH 1 (ptr) |
| 39 | SNT | SWAP |
| 40 | TTS | STORE |
| 41 | NSNSSSTTSSSSSSSSSSSN | JMP > 00011000 00000000 |
| 42 | |
| 43 | @ Clean up and return |
| 44 | NSSVSSSTTSSSSSSSSSSTN | Mark: 00011000 00000001 |
| 45 | SNN | DROP |
| 46 | NTN | RTS |
| 47 | |
| 48 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 49 | @ Name: |
| 50 | @ memcpy (11001) |
| 51 | @ Description: |
| 52 | @ Copies 'count+1' words from 'source' to 'destination'. |
| 53 | @ Call Stack: |
| 54 | @ source |
| 55 | @ destination |
| 56 | @ count <-- TOS |
| 57 | @ Return Stack: |
| 58 | @ <empty> |
| 59 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 60 | NSSVTTSSTN | Mark: 11001 (memcpy) |
| 61 | SSSTTN | PUSH 3 |
| 62 | NSTTTTTTN | JSR > 11111 (spew) |
| 63 | |
| 64 | @ Copy one word on each pass through this loop. |
| 65 | NSSVSSSTTSSTSSSSSSSSN | Mark: 00011001 00000000 |
| 66 | SSSTSN | PUSH 2 (ptr) |
| 67 | TTT | LOAD |
| 68 | SSSTN | PUSH 1 (ptr) |
| 69 | TTT | LOAD |
| 70 | TSSS | ADD |
| 71 | SSSTTN | PUSH 3 (ptr) |
| 72 | TTT | LOAD |
| 73 | SSSTN | PUSH 1 (ptr) |
| 74 | TTT | LOAD |
| 75 | TSSS | ADD |
| 76 | TTT | LOAD |
| 77 | TTS | STORE |
| 78 | |
| 79 | @ Decrement and check for loop end conditions. |
| 80 | SSSTN | PUSH 1 (ptr) |
| 81 | TTT | LOAD |
| 82 | SNS | DUP |
| 83 | NTSSSSTTSSTSSSSSSSTN | BRZ > 00011001 00000001 |
| 84 | SSSTN | PUSH 1 |
| 85 | TSST | SUBTRACT |
| 86 | SSSTN | PUSH 1 (ptr) |
| 87 | SNT | SWAP |
| 88 | TTS | STORE |
| 89 | NSNSSSTTSSTSSSSSSSSN | JMP > 00011001 00000000 |
| 90 | |
| 91 | @ Clean up and return |
| 92 | NSSVSSSTTSSTSSSSSSSTN | Mark: 00011001 00000001 |
| 93 | SNN | DROP |
| 94 | NTN | RTS |
| 95 | |
| 96 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 97 | @ Name: |
| 98 | @ memrand (11010) |
| 99 | @ Description: |
| 100 | @ Writes random words into memory locations 'startaddr' to 'startaddr+count'. |
| 101 | @ Call Stack: |
| 102 | @ count |
| 103 | @ startaddr <-- TOS |
| 104 | @ Return Stack: |
| 105 | @ <empty> |
| 106 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 107 | #include <math.pvvs> |
| 108 | NSSVTTSTSN | Mark: 11010 (memrand) |
| 109 | SSSTN | PUSH 1 |
| 110 | NSTTTTTTN | JSR > 11111 (spew) |
| 111 | |
| 112 | @ Store random word into one memory location on each pass through this loop. |
| 113 | NSSVSSSTTSTSSSSSSSSSN | Mark: 00011010 00000000 |
| 114 | SNS | DUP |
| 115 | SSSTN | PUSH 1 (ptr) |
| 116 | TTT | LOAD |
| 117 | TSSS | ADD |
| 118 | NSTTSSSSN | JSR > 10000 (random) |
| 119 | TTS | STORE |
| 120 | |
| 121 | @ Decrement and check loop end conditions |
| 122 | SNS | DUP |
| 123 | NTSSSSTTSTSSSSSSSSTN | BRZ > 00011010 00000001 |
| 124 | SSSTN | PUSH 1 |
| 125 | TSST | SUBTRACT |
| 126 | NSNSSSTTSTSSSSSSSSSN | JMP > 00011010 00000000 |
| 127 | |
| 128 | @ Clean up and return |
| 129 | NSSVSSSTTSTSSSSSSSSTN | Mark: 00011010 00000001 |
| 130 | SNN | DROP |
| 131 | NTN | RTS |
| 132 | |
| 133 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 134 | @ Name: |
| 135 | @ memcmp (11011) |
| 136 | @ Description: |
| 137 | @ Compares two blocks of memory: |
| 138 | @ blk1ptr -> blk1ptr+count |
| 139 | @ -- versus -- |
| 140 | @ blk2ptr -> blk2ptr+count |
| 141 | @ The return value is zero if the blocks are identical, otherwise non-zero. |
| 142 | @ Call Stack: |
| 143 | @ count |
| 144 | @ blk1ptr |
| 145 | @ blk2ptr <-- TOS |
| 146 | @ Return Stack: |
| 147 | @ retvalue <-- TOS |
| 148 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 149 | NSSVTTSTTN | Mark: 11011 (memcmp) |
| 150 | SSSTSN | PUSH 2 |
| 151 | NSTTTTTTN | JSR > 11111 (spew) |
| 152 | |
| 153 | @ Compare one word on each pass through this loop. |
| 154 | NSSVSSSTTSTTSSSSSSSSN | Mark: 00011011 00000000 |
| 155 | SNS | DUP |
| 156 | SNS | DUP |
| 157 | SSSTN | PUSH 1 (ptr) |
| 158 | TTT | LOAD |
| 159 | TSSS | ADD |
| 160 | TTT | LOAD |
| 161 | SNT | SWAP |
| 162 | SSTSN | PUSH 2 (ptr) |
| 163 | TTT | LOAD |
| 164 | TSSS | ADD |
| 165 | TTT | LOAD |
| 166 | TSST | SUBTRACT |
| 167 | NTSSSSTTSTTSSSSSSTSN | BRZ > 00011011 00000010 (jump if words match) |
| 168 | |
| 169 | @ Return 'match? = false' |
| 170 | SNN | DROP |
| 171 | SSSTN | PUSH 1 |
| 172 | NTN | RTS |
| 173 | |
| 174 | @ Decrement and loop again if loop is not complete. |
| 175 | NSSVSSSTTSTTSSSSSSTSN | Mark: 00011011 00000010 |
| 176 | SNS | DUP |
| 177 | NTSSSSTTSTTSSSSSSSTN | BRZ > 00011011 00000001 (jump if loop is complete) |
| 178 | SSSTN | PUSH 1 |
| 179 | TSST | SUBTRACT |
| 180 | NSNSSSTTSTTSSSSSSSSN | JMP > 00011011 00000000 |
| 181 | |
| 182 | @ Return 'match? = true' |
| 183 | NSSVSSSTTSTTSSSSSSSTN | Mark: 00011011 00000001 |
| 184 | SNN | DROP |
| 185 | SSSSN | PUSH 0 |
| 186 | NTN | RTS |
| 187 | |
| 188 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 189 | @ Name: |
| 190 | @ memsrch (11100) |
| 191 | @ Description: |
| 192 | @ Searches the heap from 'address' to 'address+count'. |
| 193 | @ If 'pattern' is found, the return value is a pointer to the matching word. |
| 194 | @ If not found, the return value is a null pointer. |
| 195 | @ Call Stack: |
| 196 | @ pattern |
| 197 | @ count |
| 198 | @ address <-- TOS |
| 199 | @ Return Stack: |
| 200 | @ pointer <-- TOS |
| 201 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 202 | NSSVTTTSSN | Mark: 11100 (memsrch) |
| 203 | SSSTTN | PUSH 3 |
| 204 | NSTTTTTTN | JSR > 11111 (spew) |
| 205 | |
| 206 | @ Compare one word on each pass through this loop. |
| 207 | NSSVSSSTTTSSSSSSSSSSN | Mark: 00011100 00000000 |
| 208 | SNS | DUP |
| 209 | SSSTN | PUSH 1 (ptr) |
| 210 | TTT | LOAD |
| 211 | TSSS | ADD |
| 212 | TTT | LOAD |
| 213 | SSSTTN | PUSH 3 (ptr) |
| 214 | TTT | LOAD |
| 215 | TSST | SUBTRACT |
| 216 | NTSSSSTTTSSSSSSSSSTN | BRZ > 00011100 00000001 |
| 217 | SNS | DUP |
| 218 | SSSTSN | PUSH 2 (ptr) |
| 219 | TTT | LOAD |
| 220 | TSST | SUBTRACT |
| 221 | NTSSSSTTTSSSSSSSSTSN | BRZ > 00011100 00000010 |
| 222 | SSSTN | PUSH 1 |
| 223 | TSSS | ADD |
| 224 | NSNSSSTTTSSSSSSSSSSN | JMP > 00011100 00000000 |
| 225 | |
| 226 | @ Found a match. Clean up and return. |
| 227 | NSSVSSSTTTSSSSSSSSSTN | Mark: 00011100 00000001 |
| 228 | SSSTN | PUSH 1 (ptr) |
| 229 | TTT | LOAD |
| 230 | TSSS | ADD |
| 231 | NTN | RTS |
| 232 | |
| 233 | @ No match found. Clean up and return. |
| 234 | NSSVSSSTTTSSSSSSSSTSN | Mark: 00011100 00000010 |
| 235 | SNN | DROP |
| 236 | SSSSN | PUSH 0 |
| 237 | NTN | RTS |
| 238 | |
| 239 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 240 | @ Name: |
| 241 | @ slurp (11110) |
| 242 | @ Description: |
| 243 | @ Reads 'count' values from heap to stack in complementary order to 'spew'. |
| 244 | @ Call Stack: |
| 245 | @ count |
| 246 | @ Return Stack: |
| 247 | @ heap[count] |
| 248 | @ ... |
| 249 | @ heap[2] |
| 250 | @ heap[1] <-- TOS |
| 251 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 252 | NSSVTTTTSN | Mark: 11110 (slurp) |
| 253 | |
| 254 | @ Load one word from heap on each pass. |
| 255 | NSSVSSSTTTTSSSSSSSSSN | Mark: 00011110 00000000 |
| 256 | SNS | DUP |
| 257 | TTT | LOAD |
| 258 | SNT | SWAP |
| 259 | |
| 260 | @ Check for loop completion. |
| 261 | @ As a side effect, prepare the next address. |
| 262 | SSSTN | PUSH 1 |
| 263 | TSST | SUBTRACT |
| 264 | SNS | DUP |
| 265 | NTSSSSTTTTSSSSSSSSTN | BRZ > 00011110 00000001 |
| 266 | NSNSSSTTTTSSSSSSSSSN | JMP > 00011110 00000000 |
| 267 | NSSVSSSTTTTSSSSSSSSTN | Mark: 00011110 00000001 |
| 268 | SNN | DROP |
| 269 | NTN | RTS |
| 270 | |
| 271 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 272 | @ Name: |
| 273 | @ spew (11111) |
| 274 | @ Description: |
| 275 | @ Writes 'count' values from stack to heap in this order: |
| 276 | @ TOS -> heap[1] |
| 277 | @ TOS+1 -> heap[2] |
| 278 | @ ... |
| 279 | @ TOS+n -> heap[count] |
| 280 | @ This is the only stdlib function which uses heap[0] for storage. |
| 281 | @ Call Stack: |
| 282 | @ data-words |
| 283 | @ ... |
| 284 | @ data-words |
| 285 | @ count <-- TOS |
| 286 | @ Return Stack: |
| 287 | @ <empty> |
| 288 | @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ |
| 289 | NSSVTTTTTN | Mark: 11111 (spew) |
| 290 | |
| 291 | @ Create a counter in heap[0] that doubles as a destination pointer generator. |
| 292 | SSSSN | PUSH 0 (ptr) |
| 293 | SSSTN | PUSH 1 |
| 294 | TTS | STORE |
| 295 | |
| 296 | @ Store one word to heap on each pass. |
| 297 | NSSVSSSTTTTTSSSSSSSSN | Mark: 00011111 00000000 |
| 298 | SNT | SWAP |
| 299 | SSSSN | PUSH 0 (ptr) |
| 300 | TTT | LOAD |
| 301 | SNT | SWAP |
| 302 | TTS | STORE |
| 303 | |
| 304 | @ Check for loop completion. |
| 305 | SNS | DUP |
| 306 | SSSSN | PUSH 0 (ptr) |
| 307 | TTT | LOAD |
| 308 | TSST | SUBTRACT |
| 309 | NTSSSSTTTTTSSSSSSSTN | BRZ > 00011111 00000001 |
| 310 | |
| 311 | @ Increment heap[0] if continuing. |
| 312 | SSSSN | PUSH 0 (ptr) |
| 313 | SNS | DUP |
| 314 | TTT | LOAD |
| 315 | SSSTN | PUSH 1 |
| 316 | TSSS | ADD |
| 317 | TTS | STORE |
| 318 | NSNSSSTTTTTSSSSSSSSN | JMP > 00011111 00000000 |
| 319 | |
| 320 | @ Clean up and return. |
| 321 | NSSVSSSTTTTTSSSSSSSTN | Mark: 00011111 00000001 |
| 322 | SNN | DROP |
| 323 | NTN | RTS |
| 324 | |
| 325 | #endif |