ata.lst

au1200下的boot代码

 343 0238 1000B3AF 		sw	$19,16($sp)
 344              	
 345              		.loc 1 56 0
 346 023c 2A183402 		slt	$3,$17,$20
 347              		.loc 1 58 0
 348 0240 21904202 		addu	$18,$18,$2
  59:/mnt/hgfs/boot/booter/source/ata.c **** 		buf += SECTOR_SIZE / 2;
 349              		.loc 1 59 0
 350              		.loc 1 56 0
 351 0244 F6FF6014 		bne	$3,$0,$L34
 352 0248 00021026 		addiu	$16,$16,512
 353              	
 354              	$L36:
  60:/mnt/hgfs/boot/booter/source/ata.c **** 	}
  61:/mnt/hgfs/boot/booter/source/ata.c **** 	
  62:/mnt/hgfs/boot/booter/source/ata.c **** 	return bytes_read;
  63:/mnt/hgfs/boot/booter/source/ata.c **** }
 355              		.loc 1 63 0
 356 024c 21104002 		move	$2,$18
 357 0250 3400BF8F 		lw	$31,52($sp)
 358 0254 3000B68F 		lw	$22,48($sp)
 359 0258 2C00B58F 		lw	$21,44($sp)
 360 025c 2800B48F 		lw	$20,40($sp)
 361 0260 2400B38F 		lw	$19,36($sp)
 362 0264 2000B28F 		lw	$18,32($sp)
 363 0268 1C00B18F 		lw	$17,28($sp)
 364 026c 1800B08F 		lw	$16,24($sp)
 365 0270 0800E003 		j	$31
 366 0274 3800BD27 		addiu	$sp,$sp,56
 367              	
 368              		.set	macro
 369              		.set	reorder
 370              	$LFE5:
 371              		.end	ata_read_sectors
 372              		.align	2
 373              		.globl	ata_write_sectors
 374              		.ent	ata_write_sectors
 375              		.type	ata_write_sectors, @function
 376              	ata_write_sectors:
 377              	$LFB6:
  64:/mnt/hgfs/boot/booter/source/ata.c **** 
  65:/mnt/hgfs/boot/booter/source/ata.c **** int ata_write_sectors(void* base, int sect, int n, short *buf, int reg_size)
  66:/mnt/hgfs/boot/booter/source/ata.c **** {
 378              		.loc 1 66 0
 379              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 380              		.mask	0x00000000,0
 381              		.fmask	0x00000000,0
 382              		.set	noreorder
 383              		.set	nomacro
 384              		
GAS LISTING /tmp/ccpN3UVf.s 			page 9


 385              		.loc 1 66 0
 386 0278 1000AC8F 		lw	$12,16($sp)
 387 027c 21588000 		move	$11,$4
 388 0280 2170A000 		move	$14,$5
 389              	$LBB12:
 390              		.loc 1 5 0
 391 0284 C0680C00 		sll	$13,$12,3
 392 0288 2310AC01 		subu	$2,$13,$12
 393              	$LBE12:
 394              		.loc 1 66 0
 395 028c 2178C000 		move	$15,$6
 396 0290 21C0E000 		move	$24,$7
 397              	$LBB13:
 398              		.loc 1 5 0
 399 0294 21184400 		addu	$3,$2,$4
 400              	$L38:
 401              	$LBB14:
 402              		.loc 1 6 0
 403 0298 00006290 		lbu	$2,0($3)
 404 029c 00160200 		sll	$2,$2,24
 405 02a0 03160200 		sra	$2,$2,24
  67:/mnt/hgfs/boot/booter/source/ata.c **** 	volatile uint8* regs = (volatile uint8*) base;
  68:/mnt/hgfs/boot/booter/source/ata.c **** 	
  69:/mnt/hgfs/boot/booter/source/ata.c **** 	ata_wait_busy(&regs[reg_size*ATA_REG_STATUS]);
  70:/mnt/hgfs/boot/booter/source/ata.c **** 
  71:/mnt/hgfs/boot/booter/source/ata.c **** 	regs[reg_size*ATA_REG_SECTOR_COUNT]	= 1;
 406              		.loc 1 71 0
 407              		.loc 1 6 0
 408 02a4 FCFF4004 		bltz	$2,$L38
 409 02a8 40280C00 		sll	$5,$12,1
 410              	
 411              	$LBE14:
 412              	$LBE13:
  72:/mnt/hgfs/boot/booter/source/ata.c **** 	regs[reg_size*ATA_REG_SECTOR_NUMBER]	= sect & 0xff;
  73:/mnt/hgfs/boot/booter/source/ata.c **** 	regs[reg_size*ATA_REG_CYLINDER_LOW]	= (sect >> 8) & 0xff;
  74:/mnt/hgfs/boot/booter/source/ata.c **** 	regs[reg_size*ATA_REG_CYLINDER_HIGH]	= (sect >> 16) & 0xff;
  75:/mnt/hgfs/boot/booter/source/ata.c **** 	regs[reg_size*ATA_REG_DEVICE_HEAD]	= (sect >> 24) & 0x0f | 0xe0;
 413              		.loc 1 75 0
 414 02ac 031E0E00 		sra	$3,$14,24
 415              		.loc 1 72 0
 416 02b0 2130AC00 		addu	$6,$5,$12
 417              		.loc 1 73 0
 418 02b4 80200C00 		sll	$4,$12,2
 419              		.loc 1 75 0
 420 02b8 E0FF0224 		li	$2,-32
 421 02bc 0F006330 		andi	$3,$3,0xf
 422              		.loc 1 74 0
 423 02c0 21388C00 		addu	$7,$4,$12
 424              		.loc 1 75 0
 425 02c4 40400600 		sll	$8,$6,1
 426 02c8 25186200 		or	$3,$3,$2
 427              		.loc 1 71 0
 428 02cc 2128AB00 		addu	$5,$5,$11
 429 02d0 01000224 		li	$2,1
 430 02d4 0000A2A0 		sb	$2,0($5)
 431              		.loc 1 74 0
 432 02d8 2138EB00 		addu	$7,$7,$11
GAS LISTING /tmp/ccpN3UVf.s 			page 10


 433              		.loc 1 75 0
 434 02dc 21400B01 		addu	$8,$8,$11
 435              		.loc 1 72 0
 436 02e0 2130CB00 		addu	$6,$6,$11
 437              		.loc 1 73 0
 438 02e4 21208B00 		addu	$4,$4,$11
 439 02e8 034A0E00 		sra	$9,$14,8
 440              		.loc 1 74 0
 441 02ec 03540E00 		sra	$10,$14,16
  76:/mnt/hgfs/boot/booter/source/ata.c **** 
  77:/mnt/hgfs/boot/booter/source/ata.c **** 	if (n == 1)
 442              		.loc 1 77 0
 443 02f0 01000224 		li	$2,1			# 0x1
 444              		.loc 1 72 0
 445 02f4 0000CEA0 		sb	$14,0($6)
 446              		.loc 1 73 0
 447 02f8 000089A0 		sb	$9,0($4)
 448              		.loc 1 74 0
 449 02fc 0000EAA0 		sb	$10,0($7)
 450              		.loc 1 75 0
 451 0300 000003A1 		sb	$3,0($8)
  78:/mnt/hgfs/boot/booter/source/ata.c **** 		regs[reg_size*ATA_REG_COMMAND] = 0x31;
 452              		.loc 1 78 0
 453              		.loc 1 77 0
 454 0304 2900E211 		beq	$15,$2,$L54
 455 0308 2310AC01 		subu	$2,$13,$12
 456              	
  79:/mnt/hgfs/boot/booter/source/ata.c **** 	else
  80:/mnt/hgfs/boot/booter/source/ata.c **** 		regs[reg_size*ATA_REG_COMMAND] = 0xc5;
 457              		.loc 1 80 0
 458 030c 21104B00 		addu	$2,$2,$11
 459 0310 C5FF0324 		li	$3,-59
 460              	$L53:
 461 0314 000043A0 		sb	$3,0($2)
 462              	$LBB15:
 463              		.loc 1 5 0
 464 0318 2310AC01 		subu	$2,$13,$12
 465 031c 21184B00 		addu	$3,$2,$11
 466              	$L43:
 467              	$LBB16:
 468              		.loc 1 6 0
 469 0320 00006290 		lbu	$2,0($3)
 470 0324 00160200 		sll	$2,$2,24
 471 0328 03160200 		sra	$2,$2,24
 472 032c FCFF4004 		bltz	$2,$L43
 473 0330 2320AC01 		subu	$4,$13,$12
 474              	
 475              	$LBE16:
 476              	$LBE15:
 477 0334 21188B00 		addu	$3,$4,$11
 478 0338 00006290 		lbu	$2,0($3)
 479 033c 08004230 		andi	$2,$2,0x8
  81:/mnt/hgfs/boot/booter/source/ata.c **** 
  82:/mnt/hgfs/boot/booter/source/ata.c ****     ata_wait_busy(&regs[reg_size*ATA_REG_STATUS]);
  83:/mnt/hgfs/boot/booter/source/ata.c **** 	
  84:/mnt/hgfs/boot/booter/source/ata.c ****     int i = 0;
 480              		.loc 1 84 0
GAS LISTING /tmp/ccpN3UVf.s 			page 11


 481              		.loc 1 6 0
 482 0340 18004010 		beq	$2,$0,$L47
 483 0344 21400000 		move	$8,$0
 484              	
 485 0348 00320F00 		sll	$6,$15,8
 486 034c 1500C018 		blez	$6,$L47
 487 0350 00000000 		nop
 488              	
 489 0354 FEFF0727 		addiu	$7,$24,-2
 490 0358 21188000 		move	$3,$4
 491              	$L51:
  85:/mnt/hgfs/boot/booter/source/ata.c **** 	while((regs[reg_size*ATA_REG_STATUS] & ATA_STATUS_DRQ ) && i < ((SECTOR_SIZE/2)*n))	// while DRQ
  86:/mnt/hgfs/boot/booter/source/ata.c **** 	{
  87:/mnt/hgfs/boot/booter/source/ata.c **** 		*((uint16*) &regs[reg_size*ATA_REG_DATA]) = buf[i++];
 492              		.loc 1 87 0
 493 035c 0200E724 		addiu	$7,$7,2
 494 0360 0000E294 		lhu	$2,0($7)
 495 0364 01000825 		addiu	$8,$8,1
 496              	$LBB17:
 497              		.loc 1 5 0
 498 0368 21186B00 		addu	$3,$3,$11
 499              	$LBE17:
 500              		.loc 1 87 0
 501 036c 000062A5 		sh	$2,0($11)
 502              	$L48:
 503              	$LBB18:
 504              	$LBB19:
 505              		.loc 1 6 0
 506 0370 00006290 		lbu	$2,0($3)
 507 0374 00160200 		sll	$2,$2,24
 508 0378 03160200 		sra	$2,$2,24
 509 037c FCFF4004 		bltz	$2,$L48
 510 0380 00000000 		nop
 511              	
 512              	$LBE19:
 513              	$LBE18:
 514 0384 21188B00 		addu	$3,$4,$11
 515 0388 00006290 		lbu	$2,0($3)
 516 038c 08004230 		andi	$2,$2,0x8
 517 0390 04004010 		beq	$2,$0,$L47
 518 0394 21188000 		move	$3,$4
 519              	
 520 0398 2A100601 		slt	$2,$8,$6
 521 039c EFFF4014 		bne	$2,$0,$L51
 522 03a0 00000000 		nop
 523              	
 524              	$L47:
  88:/mnt/hgfs/boot/booter/source/ata.c **** 		ata_wait_busy(&regs[reg_size*ATA_REG_STATUS]);
  89:/mnt/hgfs/boot/booter/source/ata.c **** 	}
  90:/mnt/hgfs/boot/booter/source/ata.c **** 
  91:/mnt/hgfs/boot/booter/source/ata.c **** 	return i*2;
  92:/mnt/hgfs/boot/booter/source/ata.c **** }
 525              		.loc 1 92 0
 526 03a4 0800E003 		j	$31
 527 03a8 40100800 		sll	$2,$8,1
 528              	
 529              	$L54:
GAS LISTING /tmp/ccpN3UVf.s 			page 12


 530              		.loc 1 78 0
 531 03ac 21104B00 		addu	$2,$2,$11
 532 03b0 C5000008 		j	$L53
 533 03b4 31000324 		li	$3,49
 534              	
 535              		.set	macro
 536              		.set	reorder
 537              	$LFE6:
 538              		.end	ata_write_sectors
 539              		.section	.debug_frame,"",@progbits
 540              	$Lframe0:
 541 0000 0C000000 		.4byte	$LECIE0-$LSCIE0
 542              	$LSCIE0:
 543 0004 FFFFFFFF 		.4byte	0xffffffff
 544 0008 01       		.byte	0x1
 545 0009 00       		.ascii	"\000"
 546 000a 01       		.uleb128 0x1
 547 000b 04       		.sleb128 4
 548 000c 1F       		.byte	0x1f
 549 000d 0C       		.byte	0xc
 550 000e 1D       		.uleb128 0x1d
 551 000f 00       		.uleb128 0x0
 552              		.align	2
 553              	$LECIE0:
 554              	$LSFDE0:
 555 0010 0C000000 		.4byte	$LEFDE0-$LASFDE0
 556              	$LASFDE0:
 557 0014 00000000 		.4byte	$Lframe0
 558 0018 00000000 		.4byte	$LFB2
 559 001c 1C000000 		.4byte	$LFE2-$LFB2
 560              		.align	2
 561              	$LEFDE0:
 562              	$LSFDE2:
 563 0020 24000000 		.4byte	$LEFDE2-$LASFDE2
 564              	$LASFDE2:
 565 0024 00000000 		.4byte	$Lframe0
 566 0028 1C000000 		.4byte	$LFB3
 567 002c 7C000000 		.4byte	$LFE3-$LFB3
 568 0030 44       		.byte	0x4
 569              		.4byte	$LCFI0-$LFB3
 570 0031 0E       		.byte	0xe
 571 0032 28       		.uleb128 0x28
 572 0033 58       		.byte	0x4
 573              		.4byte	$LCFI6-$LCFI0
 574 0034 11       		.byte	0x11
 575 0035 10       		.uleb128 0x10
 576 0036 7A       		.sleb128 -6
 577 0037 11       		.byte	0x11
 578 0038 12       		.uleb128 0x12
 579 0039 7C       		.sleb128 -4
 580 003a 11       		.byte	0x11
 581 003b 1F       		.uleb128 0x1f
 582 003c 7F       		.sleb128 -1
 583 003d 11       		.byte	0x11
 584 003e 11       		.uleb128 0x11
 585 003f 7B       		.sleb128 -5
 586 0040 11       		.byte	0x11
GAS LISTING /tmp/ccpN3UVf.s 			page 13


 587 0041 13       		.uleb128 0x13
 588 0042 7D       		.sleb128 -3
 589 0043 11       		.byte	0x11
 590 0044 14       		.uleb128 0x14
 591 0045 7E       		.sleb128 -2
 592 0046 0000     		.align	2
 593              	$LEFDE2:
 594              	$LSFDE4:
 595 0048 0C000000 		.4byte	$LEFDE4-$LASFDE4
 596              	$LASFDE4:
 597 004c 00000000 		.4byte	$Lframe0
 598 0050 98000000 		.4byte	$LFB4
 599 0054 44010000 		.4byte	$LFE4-$LFB4
 600              		.align	2
 601              	$LEFDE4:
 602              	$LSFDE6:
 603 0058 28000000 		.4byte	$LEFDE6-$LASFDE6
 604              	$LASFDE6:
 605 005c 00000000 		.4byte	$Lframe0
 606 0060 DC010000 		.4byte	$LFB5
 607 0064 9C000000 		.4byte	$LFE5-$LFB5
 608 0068 44       		.byte	0x4
 609              		.4byte	$LCFI7-$LFB5
 610 0069 0E       		.byte	0xe
 611 006a 38       		.uleb128 0x38
 612 006b 60       		.byte	0x4
 613              		.4byte	$LCFI15-$LCFI7
 614 006c 11       		.byte	0x11
 615 006d 1F       		.uleb128 0x1f
 616 006e 7F       		.sleb128 -1
 617 006f 11       		.byte	0x11
 618 0070 10       		.uleb128 0x10
 619 0071 78       		.sleb128 -8
 620 0072 11       		.byte	0x11
 621 0073 11       		.uleb128 0x11
 622 0074 79       		.sleb128 -7
 623 0075 11       		.byte	0x11
 624 0076 12       		.uleb128 0x12
 625 0077 7A       		.sleb128 -6
 626 0078 11       		.byte	0x11
 627 0079 13       		.uleb128 0x13
 628 007a 7B       		.sleb128 -5
 629 007b 11       		.byte	0x11
 630 007c 14       		.uleb128 0x14
 631 007d 7C       		.sleb128 -4
 632 007e 11       		.byte	0x11
 633 007f 15       		.uleb128 0x15
 634 0080 7D       		.sleb128 -3
 635 0081 11       		.byte	0x11
 636 0082 16       		.uleb128 0x16
 637 0083 7E       		.sleb128 -2
 638              		.align	2
 639              	$LEFDE6:
 640              	$LSFDE8:
 641 0084 0C000000 		.4byte	$LEFDE8-$LASFDE8
 642              	$LASFDE8:
 643 0088 00000000 		.4byte	$Lframe0
GAS LISTING /tmp/ccpN3UVf.s 			page 14


 644 008c 78020000 		.4byte	$LFB6
 645 0090 40010000 		.4byte	$LFE6-$LFB6
 646              		.align	2
 647              	$LEFDE8:
 648              		.align	0
 649              		.file 2 "/mnt/hgfs/boot/booter/include/example.h"
 650              		.file 3 "/mnt/hgfs/boot/booter/platforms/DB1200/platform.h"
 651              		.text
 652              	$Letext0:
 653 03b8 00000000 		.section	.debug_info
 653      00000000 
 654 0000 23030000 		.4byte	0x323
 655 0004 0200     		.2byte	0x2
 656 0006 00000000 		.4byte	$Ldebug_abbrev0
 657 000a 04       		.byte	0x4
 658 000b 01       		.uleb128 0x1
 659 000c 00000000 		.4byte	$Ldebug_line0
 660 0010 B8030000 		.4byte	$Letext0
 661 0014 00000000 		.4byte	$Ltext0
 662 0018 D3000000 		.4byte	$LASF19
 663 001c 01       		.byte	0x1
 664 001d 7C000000 		.4byte	$LASF20
 665 0021 02       		.uleb128 0x2
 666 0022 0D010000 		.4byte	$LASF0
 667 0026 01       		.byte	0x1
 668 0027 06       		.byte	0x6
 669 0028 02       		.uleb128 0x2
 670 0029 E2000000 		.4byte	$LASF1
 671 002d 02       		.byte	0x2
 672 002e 05       		.byte	0x5
 673 002f 03       		.uleb128 0x3
 674 0030 696E7400 		.ascii	"int\000"
 675 0034 04       		.byte	0x4
 676 0035 05       		.byte	0x5
 677 0036 04       		.uleb128 0x4
 678 0037 2C010000 		.4byte	$LASF21
 679 003b 02       		.byte	0x2
 680 003c 35       		.byte	0x35
 681 003d 41000000 		.4byte	0x41
 682 0041 02       		.uleb128 0x2
 683 0042 F1000000 		.4byte	$LASF2
 684 0046 01       		.byte	0x1
 685 0047 08       		.byte	0x8
 686 0048 02       		.uleb128 0x2
 687 0049 19010000 		.4byte	$LASF3
 688 004d 02       		.byte	0x2
 689 004e 07       		.byte	0x7
 690 004f 02       		.uleb128 0x2
 691 0050 1F000000 		.4byte	$LASF4
 692 0054 04       		.byte	0x4
 693 0055 07       		.byte	0x7
 694 0056 02       		.uleb128 0x2
 695 0057 55000000 		.4byte	$LASF5
 696 005b 08       		.byte	0x8
 697 005c 07       		.byte	0x7
 698 005d 02       		.uleb128 0x2
 699 005e 1F000000 		.4byte	$LASF4
GAS LISTING /tmp/ccpN3UVf.s 			page 15


 700 0062 04       		.byte	0x4
 701 0063 07       		.byte	0x7
 702 0064 05       		.uleb128 0x5
 703 0065 04       		.byte	0x4
 704 0066 02       		.uleb128 0x2
 705 0067 C1000000 		.4byte	$LASF6
 706 006b 04       		.byte	0x4
 707 006c 07       		.byte	0x7
 708 006d 06       		.uleb128 0x6
 709 006e 87000000 		.4byte	0x87
 710 0072 01       		.byte	0x1
 711 0073 FF000000 		.4byte	$LASF7
 712 0077 01       		.byte	0x1
 713 0078 05       		.byte	0x5
 714 0079 01       		.byte	0x1
 715 007a 03       		.byte	0x3
 716 007b 07       		.uleb128 0x7