mirror of https://github.com/acidanthera/audk.git
Make end of line consistent for DuetPkg. There is no other update.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9149 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
parent
ff68065a57
commit
f3eb213152
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@ -1,260 +1,260 @@
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#------------------------------------------------------------------------------
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#*
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#* Copyright 2006 - 2007, Intel Corporation
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#* All rights reserved. This program and the accompanying materials
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#* are licensed and made available under the terms and conditions of the BSD License
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#* which accompanies this distribution. The full text of the license may be found at
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#* http://opensource.org/licenses/bsd-license.php
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#*
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#* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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#* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#*
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#* Mbr.asm
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#*
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#* Abstract:
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#*
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#------------------------------------------------------------------------------
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.equ BLOCK_SIZE, 0x0200
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.equ BLOCK_MASK, 0x01ff
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.equ BLOCK_SHIFT, 9
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# ****************************************************************************
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# Code loaded by BIOS at 0x0000:0x7C00
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# ****************************************************************************
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.org 0x0
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#------------------------------------------------------------------------------
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#*
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#* Copyright 2006 - 2007, Intel Corporation
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#* All rights reserved. This program and the accompanying materials
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#* are licensed and made available under the terms and conditions of the BSD License
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#* which accompanies this distribution. The full text of the license may be found at
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#* http://opensource.org/licenses/bsd-license.php
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#*
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#* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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#* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#*
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#* Mbr.asm
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#*
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#* Abstract:
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#*
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#------------------------------------------------------------------------------
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.equ BLOCK_SIZE, 0x0200
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.equ BLOCK_MASK, 0x01ff
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.equ BLOCK_SHIFT, 9
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# ****************************************************************************
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# Code loaded by BIOS at 0x0000:0x7C00
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# ****************************************************************************
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.org 0x0
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.global _start
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_start:
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# ****************************************************************************
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# Start Print
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# ****************************************************************************
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movw $0xb800, %ax
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movw %ax, %es
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movw $0x7c0, %ax
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movw %ax, %ds
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leaw %cs:StartString, %si
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movw $10, %cx
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movw $160, %di
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rep
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movsw
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# ****************************************************************************
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# Print over
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# ****************************************************************************
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# ****************************************************************************
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# Initialize segment registers and copy code at 0x0000:0x7c00 to 0x0000:0x0600
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# ****************************************************************************
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xorw %ax, %ax # AX = 0x0000
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movw $0x7c00, %bx # BX = 0x7C00
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movw $0x600, %bp # BP = 0x0600
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movw RelocatedStart, %si # SI = Offset(RelocatedStart)
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movw $0x200, %cx # CX = 0x0200
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subw %si, %cx # CS = 0x0200 - Offset(RelocatedStart)
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leaw (%bp,%si,), %di # DI = 0x0600 + Offset(RelocatedStart)
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leaw (%bx,%si,), %si # BX = 0x7C00 + Offset(RelocatedStart)
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movw %ax, %ss # SS = 0x0000
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movw %bx, %sp # SP = 0x7C00
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movw %ax, %es # ES = 0x0000
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movw %ax, %ds # DS = 0x0000
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pushw %ax # PUSH 0x0000
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pushw %di # PUSH 0x0600 + Offset(RelocatedStart)
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cld # Clear the direction flag
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rep
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movsb # Copy 0x0200 bytes from 0x7C00 to 0x0600
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retl # JMP 0x0000:0x0600 + Offset(RelocatedStart)
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# ****************************************************************************
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# Code relocated to 0x0000:0x0600
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# ****************************************************************************
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RelocatedStart:
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# ****************************************************************************
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# Get Driver Parameters to 0x0000:0x7BFC
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# ****************************************************************************
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xorw %ax, %ax # AX = 0
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movw %ax, %ss # SS = 0
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addw $0x1000, %ax
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movw %ax, %ds
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movw $0x7c00, %sp # SP = 0x7c00
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movw %sp, %bp # BP = 0x7c00
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movb $8, %ah # AH = 8 - Get Drive Parameters Function
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movb %dl, PhysicalDrive(%bp) # BBS defines that BIOS would pass the booting driver number to the loader through DL
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int $0x13 # Get Drive Parameters
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xorw %ax, %ax # AX = 0
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movb %dh, %al # AL = DH
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incb %al # MaxHead = AL + 1
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pushw %ax # 0000:7bfe = MaxHead
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movb %cl, %al # AL = CL
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andb $0x3f, %al # MaxSector = AL & 0x3f
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pushw %ax # 0000:7bfc = MaxSector
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# ****************************************************************************
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# Read Target DBR from hard disk to 0x0000:0x7C00
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# ****************************************************************************
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xorw %ax, %ax
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movb MbrPartitionIndicator(%bp), %al # AX = MbrPartitionIndex
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cmpb $0xff, %al # 0xFF means do legacy MBR boot
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jnz EfiDbr
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LegacyMbr:
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movl $0x0000600, %eax # Assume LegacyMBR is backuped in Sector 6
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jmp StartReadTo7C00 # EAX = Header/Sector/Tracker/Zero
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EfiDbr:
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cmpb $4, %al # MbrPartitionIndex should < 4
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jae BadDbr
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shlw $4, %ax # AX = MBREntrySize * Index
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addw $0x1be, %ax # AX = MBREntryOffset
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movw %ax, %di # DI = MBREntryOffset
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# Here we don't use the C/H/S information provided by Partition table
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# but calculate C/H/S from LBA ourselves
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# Ci: Cylinder number
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# Hi: Header number
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# Si: Sector number
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movl %es:8(%bp,%di,), %eax # Start LBA
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movl %eax, %edx
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shrl $16, %edx # DX:AX = Start LBA
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# = Ci * (H * S) + Hi * S + (Si - 1)
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# Calculate C/H/S according to LBA
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movw $0x7bfa, %bp
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divw 2(%bp) # AX = Hi + H*Ci
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# DX = Si - 1
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incw %dx # DX = Si
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pushw %dx # 0000:7bfa = Si <----
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xorw %dx, %dx # DX:AX = Hi + H*Ci
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divw 4(%bp) # AX = Ci <----
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# DX = Hi <----
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StartReadTo7C00:
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movb (%bp), %cl # Si
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movb %al, %ch # Ci[0-7]
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orb %ah, %cl # Ci[8,9]
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movw $0x7c00, %bx # ES:BX = 0000:7C00h
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movb $0x2, %ah # Function 02h
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movb $1, %al # 1 Sector
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movb %dl, %dh # Hi
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movw $0x600, %bp
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movb PhysicalDrive(%bp), %dl # Drive number
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int $0x13
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jc BadDbr
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# ****************************************************************************
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# Transfer control to BootSector - Jump to 0x0000:0x7C00
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# ****************************************************************************
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xorw %ax, %ax
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pushw %ax # PUSH 0x0000 - Segment
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movw $0x7c00, %di
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pushw %di # PUSH 0x7C00 - Offset
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retl # JMP 0x0000:0x7C00
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# ****************************************************************************
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# ERROR Condition:
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# ****************************************************************************
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BadDbr:
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pushw %ax
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movw $0xb800, %ax
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movw %ax, %es
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movw $0x60, %ax
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movw %ax, %ds
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leaw %cs:ErrorString, %si
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movw $320, %di
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popw %ax
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call A2C
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movb %ah, 16(%si)
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movb %al, 18(%si)
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movw $10, %cx
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rep
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movsw
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Halt:
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jmp Halt
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StartString:
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.byte 'M', 0x0c, 'B', 0x0c, 'R', 0x0c, ' ', 0x0c, 'S', 0x0c, 't', 0x0c, 'a', 0x0c, 'r', 0x0c, 't', 0x0c, '!', 0x0c
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ErrorString:
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.byte 'M', 0x0c, 'B', 0x0c, 'R', 0x0c, ' ', 0x0c, 'E', 0x0c, 'r', 0x0c, 'r', 0x0c, ':', 0x0c, '?', 0x0c, '?', 0x0c
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# ****************************************************************************
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# A2C - convert Ascii code stored in AH to character stored in AX
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# ****************************************************************************
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A2C:
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movb %ah, %al
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shrb $4, %ah
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andb $0xF, %al
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addb '0', %ah
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addb '0', %al
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cmpb '9', %ah
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jle A2C_L1
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addb $7, %ah
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A2C_L1:
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cmpb '9', %al
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jle A2C_L2
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addb $7, %al
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A2C_L2:
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ret
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# ****************************************************************************
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# PhysicalDrive - Used to indicate which disk to be boot
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# Can be patched by tool
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# ****************************************************************************
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.org 0x01B6
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PhysicalDrive: .byte 0x80
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# ****************************************************************************
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# MbrPartitionIndicator - Used to indicate which MBR partition to be boot
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# Can be patched by tool
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# OxFF means boot to legacy MBR. (LBA OFFSET 6)
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# ****************************************************************************
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.org 0x01B7
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MbrPartitionIndicator: .byte 0
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# ****************************************************************************
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# Unique MBR signature
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# ****************************************************************************
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.org 0x01B8
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.ascii "DUET"
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# ****************************************************************************
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# Unknown
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# ****************************************************************************
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.org 0x01BC
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.word 0
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# ****************************************************************************
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# MBR Entry - To be patched
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# ****************************************************************************
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.org 0x01BE
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.long 0,0,0,0
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.org 0x01CE
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.long 0,0,0,0
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.org 0x01DE
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.long 0,0,0,0
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.org 0x01EE
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.long 0,0,0,0
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# ****************************************************************************
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# Sector Signature
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# ****************************************************************************
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.org 0x01FE
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SectorSignature:
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.word 0xaa55 # Boot Sector Signature
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_start:
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# ****************************************************************************
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# Start Print
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# ****************************************************************************
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movw $0xb800, %ax
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movw %ax, %es
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movw $0x7c0, %ax
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movw %ax, %ds
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leaw %cs:StartString, %si
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movw $10, %cx
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movw $160, %di
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rep
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movsw
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# ****************************************************************************
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# Print over
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# ****************************************************************************
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# ****************************************************************************
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# Initialize segment registers and copy code at 0x0000:0x7c00 to 0x0000:0x0600
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# ****************************************************************************
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xorw %ax, %ax # AX = 0x0000
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movw $0x7c00, %bx # BX = 0x7C00
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movw $0x600, %bp # BP = 0x0600
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movw RelocatedStart, %si # SI = Offset(RelocatedStart)
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movw $0x200, %cx # CX = 0x0200
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subw %si, %cx # CS = 0x0200 - Offset(RelocatedStart)
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leaw (%bp,%si,), %di # DI = 0x0600 + Offset(RelocatedStart)
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leaw (%bx,%si,), %si # BX = 0x7C00 + Offset(RelocatedStart)
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movw %ax, %ss # SS = 0x0000
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movw %bx, %sp # SP = 0x7C00
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movw %ax, %es # ES = 0x0000
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movw %ax, %ds # DS = 0x0000
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pushw %ax # PUSH 0x0000
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pushw %di # PUSH 0x0600 + Offset(RelocatedStart)
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cld # Clear the direction flag
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rep
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movsb # Copy 0x0200 bytes from 0x7C00 to 0x0600
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retl # JMP 0x0000:0x0600 + Offset(RelocatedStart)
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|
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# ****************************************************************************
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# Code relocated to 0x0000:0x0600
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# ****************************************************************************
|
||||
|
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RelocatedStart:
|
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# ****************************************************************************
|
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# Get Driver Parameters to 0x0000:0x7BFC
|
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# ****************************************************************************
|
||||
|
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xorw %ax, %ax # AX = 0
|
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movw %ax, %ss # SS = 0
|
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addw $0x1000, %ax
|
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movw %ax, %ds
|
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|
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movw $0x7c00, %sp # SP = 0x7c00
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movw %sp, %bp # BP = 0x7c00
|
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|
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movb $8, %ah # AH = 8 - Get Drive Parameters Function
|
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movb %dl, PhysicalDrive(%bp) # BBS defines that BIOS would pass the booting driver number to the loader through DL
|
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int $0x13 # Get Drive Parameters
|
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xorw %ax, %ax # AX = 0
|
||||
movb %dh, %al # AL = DH
|
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incb %al # MaxHead = AL + 1
|
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pushw %ax # 0000:7bfe = MaxHead
|
||||
movb %cl, %al # AL = CL
|
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andb $0x3f, %al # MaxSector = AL & 0x3f
|
||||
pushw %ax # 0000:7bfc = MaxSector
|
||||
|
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# ****************************************************************************
|
||||
# Read Target DBR from hard disk to 0x0000:0x7C00
|
||||
# ****************************************************************************
|
||||
|
||||
xorw %ax, %ax
|
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movb MbrPartitionIndicator(%bp), %al # AX = MbrPartitionIndex
|
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cmpb $0xff, %al # 0xFF means do legacy MBR boot
|
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jnz EfiDbr
|
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LegacyMbr:
|
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movl $0x0000600, %eax # Assume LegacyMBR is backuped in Sector 6
|
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jmp StartReadTo7C00 # EAX = Header/Sector/Tracker/Zero
|
||||
|
||||
EfiDbr:
|
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cmpb $4, %al # MbrPartitionIndex should < 4
|
||||
jae BadDbr
|
||||
shlw $4, %ax # AX = MBREntrySize * Index
|
||||
addw $0x1be, %ax # AX = MBREntryOffset
|
||||
movw %ax, %di # DI = MBREntryOffset
|
||||
|
||||
# Here we don't use the C/H/S information provided by Partition table
|
||||
# but calculate C/H/S from LBA ourselves
|
||||
# Ci: Cylinder number
|
||||
# Hi: Header number
|
||||
# Si: Sector number
|
||||
movl %es:8(%bp,%di,), %eax # Start LBA
|
||||
movl %eax, %edx
|
||||
shrl $16, %edx # DX:AX = Start LBA
|
||||
# = Ci * (H * S) + Hi * S + (Si - 1)
|
||||
|
||||
# Calculate C/H/S according to LBA
|
||||
movw $0x7bfa, %bp
|
||||
divw 2(%bp) # AX = Hi + H*Ci
|
||||
# DX = Si - 1
|
||||
incw %dx # DX = Si
|
||||
pushw %dx # 0000:7bfa = Si <----
|
||||
xorw %dx, %dx # DX:AX = Hi + H*Ci
|
||||
divw 4(%bp) # AX = Ci <----
|
||||
# DX = Hi <----
|
||||
|
||||
StartReadTo7C00:
|
||||
|
||||
movb (%bp), %cl # Si
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||||
movb %al, %ch # Ci[0-7]
|
||||
orb %ah, %cl # Ci[8,9]
|
||||
movw $0x7c00, %bx # ES:BX = 0000:7C00h
|
||||
movb $0x2, %ah # Function 02h
|
||||
movb $1, %al # 1 Sector
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||||
movb %dl, %dh # Hi
|
||||
movw $0x600, %bp
|
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movb PhysicalDrive(%bp), %dl # Drive number
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int $0x13
|
||||
jc BadDbr
|
||||
|
||||
|
||||
|
||||
# ****************************************************************************
|
||||
# Transfer control to BootSector - Jump to 0x0000:0x7C00
|
||||
# ****************************************************************************
|
||||
xorw %ax, %ax
|
||||
pushw %ax # PUSH 0x0000 - Segment
|
||||
movw $0x7c00, %di
|
||||
pushw %di # PUSH 0x7C00 - Offset
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||||
retl # JMP 0x0000:0x7C00
|
||||
|
||||
# ****************************************************************************
|
||||
# ERROR Condition:
|
||||
# ****************************************************************************
|
||||
|
||||
BadDbr:
|
||||
pushw %ax
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||||
movw $0xb800, %ax
|
||||
movw %ax, %es
|
||||
movw $0x60, %ax
|
||||
movw %ax, %ds
|
||||
leaw %cs:ErrorString, %si
|
||||
movw $320, %di
|
||||
popw %ax
|
||||
call A2C
|
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movb %ah, 16(%si)
|
||||
movb %al, 18(%si)
|
||||
movw $10, %cx
|
||||
rep
|
||||
movsw
|
||||
Halt:
|
||||
jmp Halt
|
||||
|
||||
StartString:
|
||||
.byte 'M', 0x0c, 'B', 0x0c, 'R', 0x0c, ' ', 0x0c, 'S', 0x0c, 't', 0x0c, 'a', 0x0c, 'r', 0x0c, 't', 0x0c, '!', 0x0c
|
||||
ErrorString:
|
||||
.byte 'M', 0x0c, 'B', 0x0c, 'R', 0x0c, ' ', 0x0c, 'E', 0x0c, 'r', 0x0c, 'r', 0x0c, ':', 0x0c, '?', 0x0c, '?', 0x0c
|
||||
|
||||
# ****************************************************************************
|
||||
# A2C - convert Ascii code stored in AH to character stored in AX
|
||||
# ****************************************************************************
|
||||
A2C:
|
||||
movb %ah, %al
|
||||
shrb $4, %ah
|
||||
andb $0xF, %al
|
||||
addb '0', %ah
|
||||
addb '0', %al
|
||||
|
||||
cmpb '9', %ah
|
||||
jle A2C_L1
|
||||
addb $7, %ah
|
||||
A2C_L1:
|
||||
|
||||
cmpb '9', %al
|
||||
jle A2C_L2
|
||||
addb $7, %al
|
||||
A2C_L2:
|
||||
ret
|
||||
|
||||
|
||||
# ****************************************************************************
|
||||
# PhysicalDrive - Used to indicate which disk to be boot
|
||||
# Can be patched by tool
|
||||
# ****************************************************************************
|
||||
.org 0x01B6
|
||||
PhysicalDrive: .byte 0x80
|
||||
|
||||
# ****************************************************************************
|
||||
# MbrPartitionIndicator - Used to indicate which MBR partition to be boot
|
||||
# Can be patched by tool
|
||||
# OxFF means boot to legacy MBR. (LBA OFFSET 6)
|
||||
# ****************************************************************************
|
||||
.org 0x01B7
|
||||
MbrPartitionIndicator: .byte 0
|
||||
|
||||
# ****************************************************************************
|
||||
# Unique MBR signature
|
||||
# ****************************************************************************
|
||||
.org 0x01B8
|
||||
.ascii "DUET"
|
||||
|
||||
# ****************************************************************************
|
||||
# Unknown
|
||||
# ****************************************************************************
|
||||
.org 0x01BC
|
||||
.word 0
|
||||
|
||||
# ****************************************************************************
|
||||
# MBR Entry - To be patched
|
||||
# ****************************************************************************
|
||||
.org 0x01BE
|
||||
.long 0,0,0,0
|
||||
.org 0x01CE
|
||||
.long 0,0,0,0
|
||||
.org 0x01DE
|
||||
.long 0,0,0,0
|
||||
.org 0x01EE
|
||||
.long 0,0,0,0
|
||||
|
||||
# ****************************************************************************
|
||||
# Sector Signature
|
||||
# ****************************************************************************
|
||||
|
||||
.org 0x01FE
|
||||
SectorSignature:
|
||||
.word 0xaa55 # Boot Sector Signature
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -19,10 +19,10 @@
|
|||
# Now in 32-bit protected mode.
|
||||
##############################################################################
|
||||
|
||||
.org 0x21000
|
||||
|
||||
.global _start
|
||||
_start:
|
||||
.org 0x21000
|
||||
|
||||
.global _start
|
||||
_start:
|
||||
|
||||
.equ DEFAULT_HANDLER_SIZE, INT1 - INT0
|
||||
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -25,10 +25,10 @@
|
|||
.equ BLOCK_MASK, 0x01ff
|
||||
.equ BLOCK_SHIFT, 9
|
||||
|
||||
.org 0x0
|
||||
|
||||
.org 0x0
|
||||
|
||||
.global _start
|
||||
_start:
|
||||
_start:
|
||||
|
||||
Ia32Jump:
|
||||
jmp BootSectorEntryPoint # JMP inst - 3 bytes
|
||||
|
|
|
|||
|
|
@ -26,10 +26,10 @@
|
|||
.equ BLOCK_MASK, 0x01ff
|
||||
.equ BLOCK_SHIFT, 9
|
||||
|
||||
.org 0x00
|
||||
|
||||
.org 0x00
|
||||
|
||||
.global _start
|
||||
_start:
|
||||
_start:
|
||||
|
||||
Ia32Jump:
|
||||
jmp BootSectorEntryPoint # JMP inst - 3 bytes
|
||||
|
|
|
|||
|
|
@ -26,10 +26,10 @@
|
|||
.equ BLOCK_MASK, 0x01ff
|
||||
.equ BLOCK_SHIFT, 9
|
||||
|
||||
.org 0x0
|
||||
|
||||
.global _start
|
||||
_start:
|
||||
.org 0x0
|
||||
|
||||
.global _start
|
||||
_start:
|
||||
|
||||
Ia32Jump:
|
||||
jmp BootSectorEntryPoint # JMP inst - 3 bytes
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
Loading…
Reference in New Issue