Brute Force Techniques I

Code

	AREA RESET, DATA, READONLY
	EXPORT __Vectors

__Vectors
	DCD 0x40001000
	DCD Reset_Handler
	ALIGN
	AREA ASCEND, CODE, READONLY
	ENTRY
	EXPORT Reset_Handler

Reset_Handler
	MOV R4, #0
	MOV R1, #10
	LDR R0, =LIST
	LDR R2, =RESULT

UP
	LDR R3, [R0, R4]
	STR R3, [R2, R4]
	ADD R4, R4, #04
	SUB R1, R1, #01
	CMP R1, #00
	BHI UP
	LDR R0, =RESULT
	MOV R3, #10
	SUB R3, R3, #1
	MOV R9, R3

OUTER_LOOP
	MOV R5, R0
	MOV R4, R3

INNER_LOOP
	LDR R6, [R5], #4
	LDR R7, [R5]
	CMP R7, R6

	STRLS R6, [R5]
	STRLS R7, [R5, #-4]
	SUBS R4, R4, #1
	BNE INNER_LOOP

	SUB R3, #1
	SUBS R9, R9, #1
	BNE OUTER_LOOP

LIST
	DCD 0x10, 0x05, 0x33, 0x24, 0x56, 0x77, 0x21, 0x04, 0x87, 0x01
	AREA DATA, DATA, READWRITE
RESULT
	DCD 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	END

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