| 25 | | ;; @def VBOX_WITH_STATISTICS |
|---|
| 26 | | ; When defined all statistics will be included in the build. |
|---|
| 27 | | ; This is enabled by default in all debug builds. |
|---|
| 28 | | %ifndef VBOX_WITH_STATISTICS |
|---|
| 29 | | %ifdef DEBUG |
|---|
| 30 | | %define VBOX_WITH_STATISTICS |
|---|
| 31 | | %endif |
|---|
| 32 | | %endif |
|---|
| 33 | | |
|---|
| 34 | | %include "iprt/asmdefs.mac" |
|---|
| 35 | | |
|---|
| 36 | | |
|---|
| 37 | | |
|---|
| 38 | | ;%define UART_BASE 2f8h ; com2 |
|---|
| 39 | | %define UART_BASE 3f8h ; com1 |
|---|
| 40 | | %define UART_RATE 12 ; 9600 bps |
|---|
| 41 | | %define UART_PARAMS 00000011b ; 8n1 |
|---|
| 42 | | |
|---|
| 43 | | |
|---|
| 44 | | ;; |
|---|
| 45 | | ; Initializes the com port to 9600 baud 8n1. |
|---|
| 46 | | ; al and dx are wasted. |
|---|
| 47 | | ; @todo comport init doesn't quite work. :/ |
|---|
| 48 | | %macro COM_INIT 0 |
|---|
| 49 | | push eax |
|---|
| 50 | | push edx |
|---|
| 51 | | |
|---|
| 52 | | mov dx, UART_BASE + 3 |
|---|
| 53 | | mov al, 80h |
|---|
| 54 | | out dx, al ; make DL register accessible |
|---|
| 55 | | |
|---|
| 56 | | mov dx, UART_BASE |
|---|
| 57 | | mov ax, UART_RATE |
|---|
| 58 | | out dx, ax ; write bps rate divisor |
|---|
| 59 | | |
|---|
| 60 | | mov dx, UART_BASE + 3 |
|---|
| 61 | | mov al, UART_PARAMS |
|---|
| 62 | | out dx, al ; write parameters |
|---|
| 63 | | |
|---|
| 64 | | |
|---|
| 65 | | xor ax, ax |
|---|
| 66 | | mov dx, UART_BASE + 4 ; disconnect the UART from the int line |
|---|
| 67 | | out dx, al |
|---|
| 68 | | |
|---|
| 69 | | mov dx, UART_BASE + 1 ; disable UART ints |
|---|
| 70 | | out dx, al |
|---|
| 71 | | |
|---|
| 72 | | mov dx, UART_BASE + 2 ; disable the fifos (old software relies on it) |
|---|
| 73 | | out dx, al |
|---|
| 74 | | |
|---|
| 75 | | mov dx, UART_BASE |
|---|
| 76 | | in al, dx ; clear receiver |
|---|
| 77 | | mov dx, UART_BASE + 5 |
|---|
| 78 | | in al, dx ; clear line status |
|---|
| 79 | | inc dx |
|---|
| 80 | | in al, dx ; clear modem status |
|---|
| 81 | | |
|---|
| 82 | | pop edx |
|---|
| 83 | | pop eax |
|---|
| 84 | | %endmacro |
|---|
| 85 | | |
|---|
| 86 | | |
|---|
| 87 | | ;; |
|---|
| 88 | | ; writes string to comport |
|---|
| 89 | | ; trashes nothing (uses stack though) |
|---|
| 90 | | |
|---|
| 91 | | %macro COM32_S_PRINT 1+ |
|---|
| 92 | | push esi |
|---|
| 93 | | push ecx |
|---|
| 94 | | push eax |
|---|
| 95 | | mov ecx, edx |
|---|
| 96 | | shl ecx, 16 |
|---|
| 97 | | |
|---|
| 98 | | call %%stringend |
|---|
| 99 | | %%string: db %1 |
|---|
| 100 | | %%stringend: |
|---|
| 101 | | pop esi |
|---|
| 102 | | mov cx, %%stringend - %%string |
|---|
| 103 | | %%status: |
|---|
| 104 | | mov dx, UART_BASE + 5 |
|---|
| 105 | | in al, dx |
|---|
| 106 | | test al, 20h |
|---|
| 107 | | jz short %%status |
|---|
| 108 | | |
|---|
| 109 | | mov al, [esi] |
|---|
| 110 | | mov dx, UART_BASE |
|---|
| 111 | | out dx, al |
|---|
| 112 | | inc esi |
|---|
| 113 | | dec cx |
|---|
| 114 | | jnz short %%status |
|---|
| 115 | | |
|---|
| 116 | | %%status2: |
|---|
| 117 | | mov dx, UART_BASE + 5 |
|---|
| 118 | | in al, dx |
|---|
| 119 | | test al, 20h |
|---|
| 120 | | jz short %%status2 |
|---|
| 121 | | |
|---|
| 122 | | shr ecx, 16 |
|---|
| 123 | | mov dx, cx |
|---|
| 124 | | pop eax |
|---|
| 125 | | pop ecx |
|---|
| 126 | | pop esi |
|---|
| 127 | | %endmacro |
|---|
| 128 | | |
|---|
| 129 | | %macro COM64_S_PRINT 1+ |
|---|
| 130 | | push rsi |
|---|
| 131 | | push rdx |
|---|
| 132 | | push rcx |
|---|
| 133 | | push rax |
|---|
| 134 | | |
|---|
| 135 | | jmp %%stringend |
|---|
| 136 | | %%string: db %1 |
|---|
| 137 | | %%stringend: |
|---|
| 138 | | lea rsi, [%%string wrt rip] |
|---|
| 139 | | mov cx, %%stringend - %%string |
|---|
| 140 | | %%status: |
|---|
| 141 | | mov dx, UART_BASE + 5 |
|---|
| 142 | | in al, dx |
|---|
| 143 | | test al, 20h |
|---|
| 144 | | jz short %%status |
|---|
| 145 | | |
|---|
| 146 | | mov al, [rsi] |
|---|
| 147 | | mov dx, UART_BASE |
|---|
| 148 | | out dx, al |
|---|
| 149 | | inc rsi |
|---|
| 150 | | dec cx |
|---|
| 151 | | jnz short %%status |
|---|
| 152 | | |
|---|
| 153 | | %%status2: |
|---|
| 154 | | mov dx, UART_BASE + 5 |
|---|
| 155 | | in al, dx |
|---|
| 156 | | test al, 20h |
|---|
| 157 | | jz short %%status2 |
|---|
| 158 | | |
|---|
| 159 | | pop rax |
|---|
| 160 | | pop rcx |
|---|
| 161 | | pop rdx |
|---|
| 162 | | pop rsi |
|---|
| 163 | | %endmacro |
|---|
| 164 | | |
|---|
| 165 | | %macro COM_S_PRINT 1+ |
|---|
| 166 | | %ifdef __AMD64__ |
|---|
| 167 | | COM64_S_PRINT %1 |
|---|
| 168 | | %else |
|---|
| 169 | | COM32_S_PRINT %1 |
|---|
| 170 | | %endif |
|---|
| 171 | | %endmacro |
|---|
| 172 | | |
|---|
| 173 | | |
|---|
| 174 | | ;; Write char. |
|---|
| 175 | | ; trashes esi |
|---|
| 176 | | %macro COM_CHAR 1 |
|---|
| 177 | | mov esi, eax |
|---|
| 178 | | shl esi, 16 |
|---|
| 179 | | mov si, dx |
|---|
| 180 | | |
|---|
| 181 | | %%status: |
|---|
| 182 | | mov dx, UART_BASE + 5 |
|---|
| 183 | | in al, dx |
|---|
| 184 | | test al, 20h |
|---|
| 185 | | jz short %%status |
|---|
| 186 | | |
|---|
| 187 | | mov al, %1 |
|---|
| 188 | | mov dx, UART_BASE |
|---|
| 189 | | out dx, al |
|---|
| 190 | | |
|---|
| 191 | | %%status2: |
|---|
| 192 | | mov dx, UART_BASE + 5 |
|---|
| 193 | | in al, dx |
|---|
| 194 | | test al, 20h |
|---|
| 195 | | jz short %%status2 |
|---|
| 196 | | |
|---|
| 197 | | mov dx, si |
|---|
| 198 | | shr esi, 16 |
|---|
| 199 | | mov ax, si |
|---|
| 200 | | %endmacro |
|---|
| 201 | | |
|---|
| 202 | | |
|---|
| 203 | | ;; Write char. |
|---|
| 204 | | ; trashes nothing (uses stack though) |
|---|
| 205 | | |
|---|
| 206 | | %macro COM32_S_CHAR 1 |
|---|
| 207 | | push eax |
|---|
| 208 | | push edx |
|---|
| 209 | | |
|---|
| 210 | | %%status: |
|---|
| 211 | | mov dx, UART_BASE + 5 |
|---|
| 212 | | in al, dx |
|---|
| 213 | | test al, 20h |
|---|
| 214 | | jz short %%status |
|---|
| 215 | | |
|---|
| 216 | | mov al, %1 |
|---|
| 217 | | mov dx, UART_BASE |
|---|
| 218 | | out dx, al |
|---|
| 219 | | |
|---|
| 220 | | %%status2: |
|---|
| 221 | | mov dx, UART_BASE + 5 |
|---|
| 222 | | in al, dx |
|---|
| 223 | | test al, 20h |
|---|
| 224 | | jz short %%status2 |
|---|
| 225 | | |
|---|
| 226 | | pop edx |
|---|
| 227 | | pop eax |
|---|
| 228 | | %endmacro |
|---|
| 229 | | |
|---|
| 230 | | %macro COM64_S_CHAR 1 |
|---|
| 231 | | push rax |
|---|
| 232 | | push rdx |
|---|
| 233 | | |
|---|
| 234 | | %%status: |
|---|
| 235 | | mov dx, UART_BASE + 5 |
|---|
| 236 | | in al, dx |
|---|
| 237 | | test al, 20h |
|---|
| 238 | | jz short %%status |
|---|
| 239 | | |
|---|
| 240 | | mov al, %1 |
|---|
| 241 | | mov dx, UART_BASE |
|---|
| 242 | | out dx, al |
|---|
| 243 | | |
|---|
| 244 | | %%status2: |
|---|
| 245 | | mov dx, UART_BASE + 5 |
|---|
| 246 | | in al, dx |
|---|
| 247 | | test al, 20h |
|---|
| 248 | | jz short %%status2 |
|---|
| 249 | | |
|---|
| 250 | | pop rdx |
|---|
| 251 | | pop rax |
|---|
| 252 | | %endmacro |
|---|
| 253 | | |
|---|
| 254 | | %macro COM_S_CHAR 1 |
|---|
| 255 | | %ifdef __AMD64__ |
|---|
| 256 | | COM64_S_CHAR %1 |
|---|
| 257 | | %else |
|---|
| 258 | | COM32_S_CHAR %1 |
|---|
| 259 | | %endif |
|---|
| 260 | | %endmacro |
|---|
| 261 | | |
|---|
| 262 | | |
|---|
| 263 | | ;; Writes newline |
|---|
| 264 | | ; trashes esi |
|---|
| 265 | | %macro COM_NEWLINE 0 |
|---|
| 266 | | mov esi, eax |
|---|
| 267 | | shl esi, 16 |
|---|
| 268 | | mov si, dx |
|---|
| 269 | | |
|---|
| 270 | | %%status1: |
|---|
| 271 | | mov dx, UART_BASE + 5 |
|---|
| 272 | | in al, dx |
|---|
| 273 | | test al, 20h |
|---|
| 274 | | jz short %%status1 |
|---|
| 275 | | |
|---|
| 276 | | mov al, 13 |
|---|
| 277 | | mov dx, UART_BASE |
|---|
| 278 | | out dx, al |
|---|
| 279 | | |
|---|
| 280 | | %%status2: |
|---|
| 281 | | mov dx, UART_BASE + 5 |
|---|
| 282 | | in al, dx |
|---|
| 283 | | test al, 20h |
|---|
| 284 | | jz short %%status2 |
|---|
| 285 | | |
|---|
| 286 | | mov al, 10 |
|---|
| 287 | | mov dx, UART_BASE |
|---|
| 288 | | out dx, al |
|---|
| 289 | | |
|---|
| 290 | | %%status3: |
|---|
| 291 | | mov dx, UART_BASE + 5 |
|---|
| 292 | | in al, dx |
|---|
| 293 | | test al, 20h |
|---|
| 294 | | jz short %%status3 |
|---|
| 295 | | |
|---|
| 296 | | mov dx, si |
|---|
| 297 | | shr esi, 16 |
|---|
| 298 | | mov ax, si |
|---|
| 299 | | %endmacro |
|---|
| 300 | | |
|---|
| 301 | | |
|---|
| 302 | | ;; Writes newline |
|---|
| 303 | | ; trashes nothing (uses stack though) |
|---|
| 304 | | |
|---|
| 305 | | %macro COM32_S_NEWLINE 0 |
|---|
| 306 | | push edx |
|---|
| 307 | | push eax |
|---|
| 308 | | |
|---|
| 309 | | %%status1: |
|---|
| 310 | | mov dx, UART_BASE + 5 |
|---|
| 311 | | in al, dx |
|---|
| 312 | | test al, 20h |
|---|
| 313 | | jz short %%status1 |
|---|
| 314 | | |
|---|
| 315 | | mov al, 13 |
|---|
| 316 | | mov dx, UART_BASE |
|---|
| 317 | | out dx, al |
|---|
| 318 | | |
|---|
| 319 | | %%status2: |
|---|
| 320 | | mov dx, UART_BASE + 5 |
|---|
| 321 | | in al, dx |
|---|
| 322 | | test al, 20h |
|---|
| 323 | | jz short %%status2 |
|---|
| 324 | | |
|---|
| 325 | | mov al, 10 |
|---|
| 326 | | mov dx, UART_BASE |
|---|
| 327 | | out dx, al |
|---|
| 328 | | |
|---|
| 329 | | %%status3: |
|---|
| 330 | | mov dx, UART_BASE + 5 |
|---|
| 331 | | in al, dx |
|---|
| 332 | | test al, 20h |
|---|
| 333 | | jz short %%status3 |
|---|
| 334 | | |
|---|
| 335 | | pop eax |
|---|
| 336 | | pop edx |
|---|
| 337 | | %endmacro |
|---|
| 338 | | |
|---|
| 339 | | %macro COM64_S_NEWLINE 0 |
|---|
| 340 | | push rdx |
|---|
| 341 | | push rax |
|---|
| 342 | | |
|---|
| 343 | | %%status1: |
|---|
| 344 | | mov dx, UART_BASE + 5 |
|---|
| 345 | | in al, dx |
|---|
| 346 | | test al, 20h |
|---|
| 347 | | jz short %%status1 |
|---|
| 348 | | |
|---|
| 349 | | mov al, 13 |
|---|
| 350 | | mov dx, UART_BASE |
|---|
| 351 | | out dx, al |
|---|
| 352 | | |
|---|
| 353 | | %%status2: |
|---|
| 354 | | mov dx, UART_BASE + 5 |
|---|
| 355 | | in al, dx |
|---|
| 356 | | test al, 20h |
|---|
| 357 | | jz short %%status2 |
|---|
| 358 | | |
|---|
| 359 | | mov al, 10 |
|---|
| 360 | | mov dx, UART_BASE |
|---|
| 361 | | out dx, al |
|---|
| 362 | | |
|---|
| 363 | | %%status3: |
|---|
| 364 | | mov dx, UART_BASE + 5 |
|---|
| 365 | | in al, dx |
|---|
| 366 | | test al, 20h |
|---|
| 367 | | jz short %%status3 |
|---|
| 368 | | |
|---|
| 369 | | pop rax |
|---|
| 370 | | pop rdx |
|---|
| 371 | | %endmacro |
|---|
| 372 | | |
|---|
| 373 | | %macro COM_S_NEWLINE 0 |
|---|
| 374 | | %ifdef __AMD64__ |
|---|
| 375 | | COM64_S_NEWLINE |
|---|
| 376 | | %else |
|---|
| 377 | | COM32_S_NEWLINE |
|---|
| 378 | | %endif |
|---|
| 379 | | %endmacro |
|---|
| 380 | | |
|---|
| 381 | | |
|---|
| 382 | | ;; Writes a dword from register to com port. |
|---|
| 383 | | ; trashes esi, edi |
|---|
| 384 | | ; edi cannot be used as input register |
|---|
| 385 | | %macro COM_DWORD_REG 1 |
|---|
| 386 | | mov edi, ebx ; save ebx |
|---|
| 387 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 388 | | mov esi, eax ; save ax |
|---|
| 389 | | shl esi, 16 ; save dx |
|---|
| 390 | | mov si, dx |
|---|
| 391 | | |
|---|
| 392 | | mov ah, 8 ; loop counter. |
|---|
| 393 | | %%daloop: |
|---|
| 394 | | rol ebx, 4 ; shift next digit to the front |
|---|
| 395 | | |
|---|
| 396 | | %%status0: |
|---|
| 397 | | mov dx, UART_BASE + 5 |
|---|
| 398 | | in al, dx |
|---|
| 399 | | test al, 20h |
|---|
| 400 | | jz short %%status0 |
|---|
| 401 | | |
|---|
| 402 | | mov al, bl ; get next char |
|---|
| 403 | | and al, 0fh |
|---|
| 404 | | cmp al, 10 |
|---|
| 405 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 406 | | add al, '0' |
|---|
| 407 | | jmp short %%print |
|---|
| 408 | | %%hex: |
|---|
| 409 | | add al, 'a' - 10 |
|---|
| 410 | | %%print: |
|---|
| 411 | | mov dx, UART_BASE |
|---|
| 412 | | out dx, al |
|---|
| 413 | | |
|---|
| 414 | | dec ah |
|---|
| 415 | | jnz short %%daloop ; loop |
|---|
| 416 | | |
|---|
| 417 | | mov dx, si ; restore dx |
|---|
| 418 | | shr esi, 16 |
|---|
| 419 | | mov ax, si ; restore ax |
|---|
| 420 | | mov ebx, edi ; restore ebx |
|---|
| 421 | | %endmacro |
|---|
| 422 | | |
|---|
| 423 | | |
|---|
| 424 | | ;; Writes a dword from register to com port. |
|---|
| 425 | | ; trashes nothing (uses stack though) |
|---|
| 426 | | |
|---|
| 427 | | %macro COM32_S_DWORD_REG 1 |
|---|
| 428 | | push edx |
|---|
| 429 | | push eax |
|---|
| 430 | | push ebx |
|---|
| 431 | | |
|---|
| 432 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 433 | | |
|---|
| 434 | | mov ah, 8 ; loop counter. |
|---|
| 435 | | %%daloop: |
|---|
| 436 | | rol ebx, 4 ; shift next digit to the front |
|---|
| 437 | | |
|---|
| 438 | | %%status0: |
|---|
| 439 | | mov dx, UART_BASE + 5 |
|---|
| 440 | | in al, dx |
|---|
| 441 | | test al, 20h |
|---|
| 442 | | jz short %%status0 |
|---|
| 443 | | |
|---|
| 444 | | mov al, bl ; get next char |
|---|
| 445 | | and al, 0fh |
|---|
| 446 | | cmp al, 10 |
|---|
| 447 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 448 | | add al, '0' |
|---|
| 449 | | jmp short %%print |
|---|
| 450 | | %%hex: |
|---|
| 451 | | add al, 'a' - 10 |
|---|
| 452 | | %%print: |
|---|
| 453 | | mov dx, UART_BASE |
|---|
| 454 | | out dx, al |
|---|
| 455 | | |
|---|
| 456 | | dec ah |
|---|
| 457 | | jnz short %%daloop ; loop |
|---|
| 458 | | |
|---|
| 459 | | pop ebx |
|---|
| 460 | | pop eax |
|---|
| 461 | | pop edx |
|---|
| 462 | | %endmacro |
|---|
| 463 | | |
|---|
| 464 | | %macro COM64_S_DWORD_REG 1 |
|---|
| 465 | | push rdx |
|---|
| 466 | | push rax |
|---|
| 467 | | push rbx |
|---|
| 468 | | |
|---|
| 469 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 470 | | |
|---|
| 471 | | mov ah, 8 ; loop counter. |
|---|
| 472 | | %%daloop: |
|---|
| 473 | | rol ebx, 4 ; shift next digit to the front |
|---|
| 474 | | |
|---|
| 475 | | %%status0: |
|---|
| 476 | | mov dx, UART_BASE + 5 |
|---|
| 477 | | in al, dx |
|---|
| 478 | | test al, 20h |
|---|
| 479 | | jz short %%status0 |
|---|
| 480 | | |
|---|
| 481 | | mov al, bl ; get next char |
|---|
| 482 | | and al, 0fh |
|---|
| 483 | | cmp al, 10 |
|---|
| 484 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 485 | | add al, '0' |
|---|
| 486 | | jmp short %%print |
|---|
| 487 | | %%hex: |
|---|
| 488 | | add al, 'a' - 10 |
|---|
| 489 | | %%print: |
|---|
| 490 | | mov dx, UART_BASE |
|---|
| 491 | | out dx, al |
|---|
| 492 | | |
|---|
| 493 | | dec ah |
|---|
| 494 | | jnz short %%daloop ; loop |
|---|
| 495 | | |
|---|
| 496 | | pop rbx |
|---|
| 497 | | pop rax |
|---|
| 498 | | pop rdx |
|---|
| 499 | | %endmacro |
|---|
| 500 | | |
|---|
| 501 | | %macro COM_S_DWORD_REG 1 |
|---|
| 502 | | %ifdef __AMD64__ |
|---|
| 503 | | COM64_S_DWORD_REG %1 |
|---|
| 504 | | %else |
|---|
| 505 | | COM32_S_DWORD_REG %1 |
|---|
| 506 | | %endif |
|---|
| 507 | | %endmacro |
|---|
| 508 | | |
|---|
| 509 | | |
|---|
| 510 | | ;; Writes a qword from register to com port. |
|---|
| 511 | | ; trashes nothing (uses stack though) |
|---|
| 512 | | %macro COM64_S_QWORD_REG 1 |
|---|
| 513 | | push rdx |
|---|
| 514 | | push rax |
|---|
| 515 | | push rbx |
|---|
| 516 | | |
|---|
| 517 | | mov rbx, %1 ; get value we're supposed to print |
|---|
| 518 | | |
|---|
| 519 | | mov ah, 16 ; loop counter. |
|---|
| 520 | | %%daloop: |
|---|
| 521 | | rol rbx, 4 ; shift next digit to the front |
|---|
| 522 | | |
|---|
| 523 | | %%status0: |
|---|
| 524 | | mov dx, UART_BASE + 5 |
|---|
| 525 | | in al, dx |
|---|
| 526 | | test al, 20h |
|---|
| 527 | | jz short %%status0 |
|---|
| 528 | | |
|---|
| 529 | | mov al, bl ; get next char |
|---|
| 530 | | and al, 0fh |
|---|
| 531 | | cmp al, 10 |
|---|
| 532 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 533 | | add al, '0' |
|---|
| 534 | | jmp short %%print |
|---|
| 535 | | %%hex: |
|---|
| 536 | | add al, 'a' - 10 |
|---|
| 537 | | %%print: |
|---|
| 538 | | mov dx, UART_BASE |
|---|
| 539 | | out dx, al |
|---|
| 540 | | |
|---|
| 541 | | dec ah |
|---|
| 542 | | jnz short %%daloop ; loop |
|---|
| 543 | | |
|---|
| 544 | | pop rbx |
|---|
| 545 | | pop rax |
|---|
| 546 | | pop rdx |
|---|
| 547 | | %endmacro |
|---|
| 548 | | |
|---|
| 549 | | |
|---|
| 550 | | ;; Writes a byte from register to com port. |
|---|
| 551 | | ; trashes nothing (uses stack though) |
|---|
| 552 | | |
|---|
| 553 | | %macro COM32_S_BYTE_REG 1 |
|---|
| 554 | | push edx |
|---|
| 555 | | push eax |
|---|
| 556 | | push ebx |
|---|
| 557 | | |
|---|
| 558 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 559 | | |
|---|
| 560 | | mov ah, 2 ; loop counter. |
|---|
| 561 | | ror ebx, 8 ; shift next digit to the front |
|---|
| 562 | | %%daloop: |
|---|
| 563 | | rol ebx, 4 ; shift next digit to the front |
|---|
| 564 | | |
|---|
| 565 | | %%status0: |
|---|
| 566 | | mov dx, UART_BASE + 5 |
|---|
| 567 | | in al, dx |
|---|
| 568 | | test al, 20h |
|---|
| 569 | | jz short %%status0 |
|---|
| 570 | | |
|---|
| 571 | | mov al, bl ; get next char |
|---|
| 572 | | and al, 0fh |
|---|
| 573 | | cmp al, 10 |
|---|
| 574 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 575 | | add al, '0' |
|---|
| 576 | | jmp short %%print |
|---|
| 577 | | %%hex: |
|---|
| 578 | | add al, 'a' - 10 |
|---|
| 579 | | %%print: |
|---|
| 580 | | mov dx, UART_BASE |
|---|
| 581 | | out dx, al |
|---|
| 582 | | |
|---|
| 583 | | dec ah |
|---|
| 584 | | jnz short %%daloop ; loop |
|---|
| 585 | | |
|---|
| 586 | | pop ebx |
|---|
| 587 | | pop eax |
|---|
| 588 | | pop edx |
|---|
| 589 | | %endmacro |
|---|
| 590 | | |
|---|
| 591 | | %macro COM64_S_BYTE_REG 1 |
|---|
| 592 | | push rdx |
|---|
| 593 | | push rax |
|---|
| 594 | | push rbx |
|---|
| 595 | | |
|---|
| 596 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 597 | | |
|---|
| 598 | | mov ah, 2 ; loop counter. |
|---|
| 599 | | ror ebx, 8 ; shift next digit to the front |
|---|
| 600 | | %%daloop: |
|---|
| 601 | | rol ebx, 4 ; shift next digit to the front |
|---|
| 602 | | |
|---|
| 603 | | %%status0: |
|---|
| 604 | | mov dx, UART_BASE + 5 |
|---|
| 605 | | in al, dx |
|---|
| 606 | | test al, 20h |
|---|
| 607 | | jz short %%status0 |
|---|
| 608 | | |
|---|
| 609 | | mov al, bl ; get next char |
|---|
| 610 | | and al, 0fh |
|---|
| 611 | | cmp al, 10 |
|---|
| 612 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 613 | | add al, '0' |
|---|
| 614 | | jmp short %%print |
|---|
| 615 | | %%hex: |
|---|
| 616 | | add al, 'a' - 10 |
|---|
| 617 | | %%print: |
|---|
| 618 | | mov dx, UART_BASE |
|---|
| 619 | | out dx, al |
|---|
| 620 | | |
|---|
| 621 | | dec ah |
|---|
| 622 | | jnz short %%daloop ; loop |
|---|
| 623 | | |
|---|
| 624 | | pop rbx |
|---|
| 625 | | pop rax |
|---|
| 626 | | pop rdx |
|---|
| 627 | | %endmacro |
|---|
| 628 | | |
|---|
| 629 | | %macro COM_S_BYTE_REG 1 |
|---|
| 630 | | %ifdef __AMD64__ |
|---|
| 631 | | COM64_S_BYTE_REG %1 |
|---|
| 632 | | %else |
|---|
| 633 | | COM32_S_BYTE_REG %1 |
|---|
| 634 | | %endif |
|---|
| 635 | | %endmacro |
|---|
| 636 | | |
|---|
| 637 | | |
|---|
| 638 | | |
|---|
| 639 | | ;; Writes a single hex digit from register to com port. |
|---|
| 640 | | ; trashes nothing (uses stack though) |
|---|
| 641 | | |
|---|
| 642 | | %macro COM32_S_DIGIT_REG 1 |
|---|
| 643 | | push edx |
|---|
| 644 | | push eax |
|---|
| 645 | | push ebx |
|---|
| 646 | | |
|---|
| 647 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 648 | | %%status0: |
|---|
| 649 | | mov dx, UART_BASE + 5 |
|---|
| 650 | | in al, dx |
|---|
| 651 | | test al, 20h |
|---|
| 652 | | jz short %%status0 |
|---|
| 653 | | |
|---|
| 654 | | mov al, bl ; get next char |
|---|
| 655 | | and al, 0fh |
|---|
| 656 | | cmp al, 10 |
|---|
| 657 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 658 | | add al, '0' |
|---|
| 659 | | jmp short %%print |
|---|
| 660 | | %%hex: |
|---|
| 661 | | add al, 'a' - 10 |
|---|
| 662 | | %%print: |
|---|
| 663 | | mov dx, UART_BASE |
|---|
| 664 | | out dx, al |
|---|
| 665 | | |
|---|
| 666 | | pop ebx |
|---|
| 667 | | pop eax |
|---|
| 668 | | pop edx |
|---|
| 669 | | %endmacro |
|---|
| 670 | | |
|---|
| 671 | | %macro COM64_S_DIGIT_REG 1 |
|---|
| 672 | | push rdx |
|---|
| 673 | | push rax |
|---|
| 674 | | push rbx |
|---|
| 675 | | |
|---|
| 676 | | mov ebx, %1 ; get value we're supposed to print |
|---|
| 677 | | %%status0: |
|---|
| 678 | | mov dx, UART_BASE + 5 |
|---|
| 679 | | in al, dx |
|---|
| 680 | | test al, 20h |
|---|
| 681 | | jz short %%status0 |
|---|
| 682 | | |
|---|
| 683 | | mov al, bl ; get next char |
|---|
| 684 | | and al, 0fh |
|---|
| 685 | | cmp al, 10 |
|---|
| 686 | | jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK! |
|---|
| 687 | | add al, '0' |
|---|
| 688 | | jmp short %%print |
|---|
| 689 | | %%hex: |
|---|
| 690 | | add al, 'a' - 10 |
|---|
| 691 | | %%print: |
|---|
| 692 | | mov dx, UART_BASE |
|---|
| 693 | | out dx, al |
|---|
| 694 | | |
|---|
| 695 | | pop rbx |
|---|
| 696 | | pop rax |
|---|
| 697 | | pop rdx |
|---|
| 698 | | %endmacro |
|---|
| 699 | | |
|---|
| 700 | | %macro COM_S_DIGIT_REG 1 |
|---|
| 701 | | %ifdef __AMD64__ |
|---|
| 702 | | COM64_S_DIGIT_REG %1 |
|---|
| 703 | | %else |
|---|
| 704 | | COM32_S_DIGIT_REG %1 |
|---|
| 705 | | %endif |
|---|
| 706 | | %endmacro |
|---|
| 707 | | |
|---|
| 708 | | |
|---|
| 709 | | ;; |
|---|
| 710 | | ; Loops for a while. |
|---|
| 711 | | ; ecx is trashed. |
|---|
| 712 | | %macro LOOP_A_WHILE 0 |
|---|
| 713 | | |
|---|
| 714 | | xor ecx, ecx |
|---|
| 715 | | dec ecx |
|---|
| 716 | | shr ecx, 1 |
|---|
| 717 | | %%looplabel: |
|---|
| 718 | | nop |
|---|
| 719 | | nop |
|---|
| 720 | | nop |
|---|
| 721 | | dec ecx |
|---|
| 722 | | jnz short %%looplabel |
|---|
| 723 | | |
|---|
| 724 | | %endmacro |
|---|
| 725 | | |
|---|
| 726 | | |
|---|
| 727 | | ;; |
|---|
| 728 | | ; Loops for a short while. |
|---|
| 729 | | ; ecx is trashed. |
|---|
| 730 | | %macro LOOP_SHORT_WHILE 0 |
|---|
| 731 | | |
|---|
| 732 | | xor ecx, ecx |
|---|
| 733 | | dec ecx |
|---|
| 734 | | shr ecx, 4 |
|---|
| 735 | | %%looplabel: |
|---|
| 736 | | nop |
|---|
| 737 | | nop |
|---|
| 738 | | dec ecx |
|---|
| 739 | | jnz short %%looplabel |
|---|
| 740 | | |
|---|
| 741 | | %endmacro |
|---|
| | 26 | %include "VBox/asmdefs.mac" |
|---|