VirtualBox

source: vbox/trunk/include/VBox/asmdefs.mac@ 4878

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1;; @file
2; VirtualBox YASM/NASM macros, structs, etc.
3;
4
5;
6; Copyright (C) 2006-2007 innotek GmbH
7;
8; This file is part of VirtualBox Open Source Edition (OSE), as
9; available from http://www.virtualbox.org. This file is free software;
10; you can redistribute it and/or modify it under the terms of the GNU
11; General Public License as published by the Free Software Foundation,
12; in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
13; distribution. VirtualBox OSE is distributed in the hope that it will
14; be useful, but WITHOUT ANY WARRANTY of any kind.
15
16%ifndef __VBox_asmdefs_mac__
17%define __VBox_asmdefs_mac__
18
19;; @def VBOX_WITH_STATISTICS
20; When defined all statistics will be included in the build.
21; This is enabled by default in all debug builds.
22%ifndef VBOX_WITH_STATISTICS
23 %ifdef DEBUG
24 %define VBOX_WITH_STATISTICS
25 %endif
26%endif
27
28%include "iprt/asmdefs.mac"
29
30
31
32;%define UART_BASE 2f8h ; com2
33%define UART_BASE 3f8h ; com1
34%define UART_RATE 12 ; 9600 bps
35%define UART_PARAMS 00000011b ; 8n1
36
37
38;;
39; Initializes the com port to 9600 baud 8n1.
40; al and dx are wasted.
41; @todo comport init doesn't quite work. :/
42%macro COM_INIT 0
43 push eax
44 push edx
45
46 mov dx, UART_BASE + 3
47 mov al, 80h
48 out dx, al ; make DL register accessible
49
50 mov dx, UART_BASE
51 mov ax, UART_RATE
52 out dx, ax ; write bps rate divisor
53
54 mov dx, UART_BASE + 3
55 mov al, UART_PARAMS
56 out dx, al ; write parameters
57
58
59 xor ax, ax
60 mov dx, UART_BASE + 4 ; disconnect the UART from the int line
61 out dx, al
62
63 mov dx, UART_BASE + 1 ; disable UART ints
64 out dx, al
65
66 mov dx, UART_BASE + 2 ; disable the fifos (old software relies on it)
67 out dx, al
68
69 mov dx, UART_BASE
70 in al, dx ; clear receiver
71 mov dx, UART_BASE + 5
72 in al, dx ; clear line status
73 inc dx
74 in al, dx ; clear modem status
75
76 pop edx
77 pop eax
78%endmacro
79
80
81;;
82; writes string to comport
83; trashes nothing (uses stack though)
84
85%macro COM32_S_PRINT 1+
86 push esi
87 push ecx
88 push eax
89 mov ecx, edx
90 shl ecx, 16
91
92 call %%stringend
93%%string: db %1
94%%stringend:
95 pop esi
96 mov cx, %%stringend - %%string
97%%status:
98 mov dx, UART_BASE + 5
99 in al, dx
100 test al, 20h
101 jz short %%status
102
103 mov al, [esi]
104 mov dx, UART_BASE
105 out dx, al
106 inc esi
107 dec cx
108 jnz short %%status
109
110%%status2:
111 mov dx, UART_BASE + 5
112 in al, dx
113 test al, 20h
114 jz short %%status2
115
116 shr ecx, 16
117 mov dx, cx
118 pop eax
119 pop ecx
120 pop esi
121%endmacro
122
123%macro COM64_S_PRINT 1+
124 push rsi
125 push rdx
126 push rcx
127 push rax
128
129 jmp %%stringend
130%%string: db %1
131%%stringend:
132 lea rsi, [%%string wrt rip]
133 mov cx, %%stringend - %%string
134%%status:
135 mov dx, UART_BASE + 5
136 in al, dx
137 test al, 20h
138 jz short %%status
139
140 mov al, [rsi]
141 mov dx, UART_BASE
142 out dx, al
143 inc rsi
144 dec cx
145 jnz short %%status
146
147%%status2:
148 mov dx, UART_BASE + 5
149 in al, dx
150 test al, 20h
151 jz short %%status2
152
153 pop rax
154 pop rcx
155 pop rdx
156 pop rsi
157%endmacro
158
159%macro COM_S_PRINT 1+
160%ifdef RT_ARCH_AMD64
161 COM64_S_PRINT %1
162%else
163 COM32_S_PRINT %1
164%endif
165%endmacro
166
167
168;; Write char.
169; trashes esi
170%macro COM_CHAR 1
171 mov esi, eax
172 shl esi, 16
173 mov si, dx
174
175%%status:
176 mov dx, UART_BASE + 5
177 in al, dx
178 test al, 20h
179 jz short %%status
180
181 mov al, %1
182 mov dx, UART_BASE
183 out dx, al
184
185%%status2:
186 mov dx, UART_BASE + 5
187 in al, dx
188 test al, 20h
189 jz short %%status2
190
191 mov dx, si
192 shr esi, 16
193 mov ax, si
194%endmacro
195
196
197;; Write char.
198; trashes nothing (uses stack though)
199
200%macro COM32_S_CHAR 1
201 push eax
202 push edx
203
204%%status:
205 mov dx, UART_BASE + 5
206 in al, dx
207 test al, 20h
208 jz short %%status
209
210 mov al, %1
211 mov dx, UART_BASE
212 out dx, al
213
214%%status2:
215 mov dx, UART_BASE + 5
216 in al, dx
217 test al, 20h
218 jz short %%status2
219
220 pop edx
221 pop eax
222%endmacro
223
224%macro COM64_S_CHAR 1
225 push rax
226 push rdx
227
228%%status:
229 mov dx, UART_BASE + 5
230 in al, dx
231 test al, 20h
232 jz short %%status
233
234 mov al, %1
235 mov dx, UART_BASE
236 out dx, al
237
238%%status2:
239 mov dx, UART_BASE + 5
240 in al, dx
241 test al, 20h
242 jz short %%status2
243
244 pop rdx
245 pop rax
246%endmacro
247
248%macro COM_S_CHAR 1
249%ifdef RT_ARCH_AMD64
250 COM64_S_CHAR %1
251%else
252 COM32_S_CHAR %1
253%endif
254%endmacro
255
256
257;; Writes newline
258; trashes esi
259%macro COM_NEWLINE 0
260 mov esi, eax
261 shl esi, 16
262 mov si, dx
263
264%%status1:
265 mov dx, UART_BASE + 5
266 in al, dx
267 test al, 20h
268 jz short %%status1
269
270 mov al, 13
271 mov dx, UART_BASE
272 out dx, al
273
274%%status2:
275 mov dx, UART_BASE + 5
276 in al, dx
277 test al, 20h
278 jz short %%status2
279
280 mov al, 10
281 mov dx, UART_BASE
282 out dx, al
283
284%%status3:
285 mov dx, UART_BASE + 5
286 in al, dx
287 test al, 20h
288 jz short %%status3
289
290 mov dx, si
291 shr esi, 16
292 mov ax, si
293%endmacro
294
295
296;; Writes newline
297; trashes nothing (uses stack though)
298
299%macro COM32_S_NEWLINE 0
300 push edx
301 push eax
302
303%%status1:
304 mov dx, UART_BASE + 5
305 in al, dx
306 test al, 20h
307 jz short %%status1
308
309 mov al, 13
310 mov dx, UART_BASE
311 out dx, al
312
313%%status2:
314 mov dx, UART_BASE + 5
315 in al, dx
316 test al, 20h
317 jz short %%status2
318
319 mov al, 10
320 mov dx, UART_BASE
321 out dx, al
322
323%%status3:
324 mov dx, UART_BASE + 5
325 in al, dx
326 test al, 20h
327 jz short %%status3
328
329 pop eax
330 pop edx
331%endmacro
332
333%macro COM64_S_NEWLINE 0
334 push rdx
335 push rax
336
337%%status1:
338 mov dx, UART_BASE + 5
339 in al, dx
340 test al, 20h
341 jz short %%status1
342
343 mov al, 13
344 mov dx, UART_BASE
345 out dx, al
346
347%%status2:
348 mov dx, UART_BASE + 5
349 in al, dx
350 test al, 20h
351 jz short %%status2
352
353 mov al, 10
354 mov dx, UART_BASE
355 out dx, al
356
357%%status3:
358 mov dx, UART_BASE + 5
359 in al, dx
360 test al, 20h
361 jz short %%status3
362
363 pop rax
364 pop rdx
365%endmacro
366
367%macro COM_S_NEWLINE 0
368%ifdef RT_ARCH_AMD64
369 COM64_S_NEWLINE
370%else
371 COM32_S_NEWLINE
372%endif
373%endmacro
374
375
376;; Writes a dword from register to com port.
377; trashes esi, edi
378; edi cannot be used as input register
379%macro COM_DWORD_REG 1
380 mov edi, ebx ; save ebx
381 mov ebx, %1 ; get value we're supposed to print
382 mov esi, eax ; save ax
383 shl esi, 16 ; save dx
384 mov si, dx
385
386 mov ah, 8 ; loop counter.
387%%daloop:
388 rol ebx, 4 ; shift next digit to the front
389
390%%status0:
391 mov dx, UART_BASE + 5
392 in al, dx
393 test al, 20h
394 jz short %%status0
395
396 mov al, bl ; get next char
397 and al, 0fh
398 cmp al, 10
399 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
400 add al, '0'
401 jmp short %%print
402%%hex:
403 add al, 'a' - 10
404%%print:
405 mov dx, UART_BASE
406 out dx, al
407
408 dec ah
409 jnz short %%daloop ; loop
410
411 mov dx, si ; restore dx
412 shr esi, 16
413 mov ax, si ; restore ax
414 mov ebx, edi ; restore ebx
415%endmacro
416
417
418;; Writes a dword from register to com port.
419; trashes nothing (uses stack though)
420
421%macro COM32_S_DWORD_REG 1
422 push edx
423 push eax
424 push ebx
425
426 mov ebx, %1 ; get value we're supposed to print
427
428 mov ah, 8 ; loop counter.
429%%daloop:
430 rol ebx, 4 ; shift next digit to the front
431
432%%status0:
433 mov dx, UART_BASE + 5
434 in al, dx
435 test al, 20h
436 jz short %%status0
437
438 mov al, bl ; get next char
439 and al, 0fh
440 cmp al, 10
441 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
442 add al, '0'
443 jmp short %%print
444%%hex:
445 add al, 'a' - 10
446%%print:
447 mov dx, UART_BASE
448 out dx, al
449
450 dec ah
451 jnz short %%daloop ; loop
452
453 pop ebx
454 pop eax
455 pop edx
456%endmacro
457
458%macro COM64_S_DWORD_REG 1
459 push rdx
460 push rax
461 push rbx
462
463 mov ebx, %1 ; get value we're supposed to print
464
465 mov ah, 8 ; loop counter.
466%%daloop:
467 rol ebx, 4 ; shift next digit to the front
468
469%%status0:
470 mov dx, UART_BASE + 5
471 in al, dx
472 test al, 20h
473 jz short %%status0
474
475 mov al, bl ; get next char
476 and al, 0fh
477 cmp al, 10
478 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
479 add al, '0'
480 jmp short %%print
481%%hex:
482 add al, 'a' - 10
483%%print:
484 mov dx, UART_BASE
485 out dx, al
486
487 dec ah
488 jnz short %%daloop ; loop
489
490 pop rbx
491 pop rax
492 pop rdx
493%endmacro
494
495%macro COM_S_DWORD_REG 1
496%ifdef RT_ARCH_AMD64
497 COM64_S_DWORD_REG %1
498%else
499 COM32_S_DWORD_REG %1
500%endif
501%endmacro
502
503
504;; Writes a qword from register to com port.
505; trashes nothing (uses stack though)
506%macro COM64_S_QWORD_REG 1
507 push rdx
508 push rax
509 push rbx
510
511 mov rbx, %1 ; get value we're supposed to print
512
513 mov ah, 16 ; loop counter.
514%%daloop:
515 rol rbx, 4 ; shift next digit to the front
516
517%%status0:
518 mov dx, UART_BASE + 5
519 in al, dx
520 test al, 20h
521 jz short %%status0
522
523 mov al, bl ; get next char
524 and al, 0fh
525 cmp al, 10
526 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
527 add al, '0'
528 jmp short %%print
529%%hex:
530 add al, 'a' - 10
531%%print:
532 mov dx, UART_BASE
533 out dx, al
534
535 dec ah
536 jnz short %%daloop ; loop
537
538 pop rbx
539 pop rax
540 pop rdx
541%endmacro
542
543
544;; Writes a byte from register to com port.
545; trashes nothing (uses stack though)
546
547%macro COM32_S_BYTE_REG 1
548 push edx
549 push eax
550 push ebx
551
552 mov ebx, %1 ; get value we're supposed to print
553
554 mov ah, 2 ; loop counter.
555 ror ebx, 8 ; shift next digit to the front
556%%daloop:
557 rol ebx, 4 ; shift next digit to the front
558
559%%status0:
560 mov dx, UART_BASE + 5
561 in al, dx
562 test al, 20h
563 jz short %%status0
564
565 mov al, bl ; get next char
566 and al, 0fh
567 cmp al, 10
568 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
569 add al, '0'
570 jmp short %%print
571%%hex:
572 add al, 'a' - 10
573%%print:
574 mov dx, UART_BASE
575 out dx, al
576
577 dec ah
578 jnz short %%daloop ; loop
579
580 pop ebx
581 pop eax
582 pop edx
583%endmacro
584
585%macro COM64_S_BYTE_REG 1
586 push rdx
587 push rax
588 push rbx
589
590 mov ebx, %1 ; get value we're supposed to print
591
592 mov ah, 2 ; loop counter.
593 ror ebx, 8 ; shift next digit to the front
594%%daloop:
595 rol ebx, 4 ; shift next digit to the front
596
597%%status0:
598 mov dx, UART_BASE + 5
599 in al, dx
600 test al, 20h
601 jz short %%status0
602
603 mov al, bl ; get next char
604 and al, 0fh
605 cmp al, 10
606 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
607 add al, '0'
608 jmp short %%print
609%%hex:
610 add al, 'a' - 10
611%%print:
612 mov dx, UART_BASE
613 out dx, al
614
615 dec ah
616 jnz short %%daloop ; loop
617
618 pop rbx
619 pop rax
620 pop rdx
621%endmacro
622
623%macro COM_S_BYTE_REG 1
624%ifdef RT_ARCH_AMD64
625 COM64_S_BYTE_REG %1
626%else
627 COM32_S_BYTE_REG %1
628%endif
629%endmacro
630
631
632
633;; Writes a single hex digit from register to com port.
634; trashes nothing (uses stack though)
635
636%macro COM32_S_DIGIT_REG 1
637 push edx
638 push eax
639 push ebx
640
641 mov ebx, %1 ; get value we're supposed to print
642%%status0:
643 mov dx, UART_BASE + 5
644 in al, dx
645 test al, 20h
646 jz short %%status0
647
648 mov al, bl ; get next char
649 and al, 0fh
650 cmp al, 10
651 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
652 add al, '0'
653 jmp short %%print
654%%hex:
655 add al, 'a' - 10
656%%print:
657 mov dx, UART_BASE
658 out dx, al
659
660 pop ebx
661 pop eax
662 pop edx
663%endmacro
664
665%macro COM64_S_DIGIT_REG 1
666 push rdx
667 push rax
668 push rbx
669
670 mov ebx, %1 ; get value we're supposed to print
671%%status0:
672 mov dx, UART_BASE + 5
673 in al, dx
674 test al, 20h
675 jz short %%status0
676
677 mov al, bl ; get next char
678 and al, 0fh
679 cmp al, 10
680 jae short %%hex ; yasm BUG! It sometimes generate a near jump here. YASMCHECK!
681 add al, '0'
682 jmp short %%print
683%%hex:
684 add al, 'a' - 10
685%%print:
686 mov dx, UART_BASE
687 out dx, al
688
689 pop rbx
690 pop rax
691 pop rdx
692%endmacro
693
694%macro COM_S_DIGIT_REG 1
695%ifdef RT_ARCH_AMD64
696 COM64_S_DIGIT_REG %1
697%else
698 COM32_S_DIGIT_REG %1
699%endif
700%endmacro
701
702
703;;
704; Loops for a while.
705; ecx is trashed.
706%macro LOOP_A_WHILE 0
707
708 xor ecx, ecx
709 dec ecx
710 shr ecx, 1
711%%looplabel:
712 nop
713 nop
714 nop
715 dec ecx
716 jnz short %%looplabel
717
718%endmacro
719
720
721;;
722; Loops for a short while.
723; ecx is trashed.
724%macro LOOP_SHORT_WHILE 0
725
726 xor ecx, ecx
727 dec ecx
728 shr ecx, 4
729%%looplabel:
730 nop
731 nop
732 dec ecx
733 jnz short %%looplabel
734
735%endmacro
736
737%endif
738
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