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btx.S

Source references XOR syntaxSource embeds a long hexadecimal byte array

SHA-2565922235b3fc35c858519ba28d3ecdcebfd8246891b414c8205fee627346b5e0b

Evidence

English function-word token "the" lines 2–10

35… er
* All rights reserved.
*
* Redistribution and use in source and binary forms are freely
* permitted provided that the above copyright notice and this
* paragraph and the following disclaimer are duplicated in all
* such forms.
*
* This softw …

imports <bootargs.h> lines 11–22

11:64… ed
12 * warranties of merchantability and fitness for a particular
13 * purpose.
14 */
15
16#include <bootargs.h>
17
18/*
⋯4 lines

Source references XOR syntax lines 128–135

5… nitialization routine.
*/
130init:		cli				# Disable interrupts
xor %ax,%ax			# Zero/segment
mov %ax,%ss			# Set up
mov $MEM_ESP0,%sp		#  stack
mov %ax,%es			# Address
mov %ax,%ds			#  da …

Source embeds a long hexadecimal byte array lines 146–152

52… errupts.
*/
mov $intr20,%bx			# Address first handler
mov $0x10,%cx			# Number of handlers
mov $0x20*4,%di			# First real mode IDT entry
151init.0:		mov %bx,(%di)			# Store IP
inc %di				# Ad …

Loads ordinal table entries lines 165–172

22… done
lodsb				# Get segment
xchg %ax,%dx	 		#  P:DPL:type
lodsw				# Get control
xchg %ax,%bx			#  set
lodsw				# Get handler offset
mov $SEL_SCODE,%dh		# Segment selector
172init.2: 	shr  …