\section{Παράρτημα Α}

\subsection{Κώδικας}

\begin{lstlisting}[language=C]
#include <stdio.h>
#include <stdint.h>

static const uint8_t hashtbl[] = {
	18, 11, 10, 21, 7, 5, 9, 22, 17, 2, 12, 3, 19, 1, 14, 16, 20, 8, 23, 4, 26, 15, 6, 24, 13, 25
};

__asm int generate_hash( const char *str, const uint8_t *hashtbl, int *hashptr )
{
input_str RN r0
hashtbl		RN r1
hashptr		RN r2
curr_char	RN r6
hash_val	RN r3

	MOV		hash_val, #0
hash_loop
	LDRB	curr_char, [input_str]
	CMP		curr_char, #'0'
	BLS		hash_skip
	
	CMP		curr_char, #'9'
	SUBLS	hash_val, curr_char
	ADDLS	hash_val, #48
	BLS		hash_skip

	CMP		curr_char, #'A' - 1
	BLS		hash_skip

	CMP		curr_char, #'Z'
	BHI		hash_skip

	SUB		r4, curr_char, #65
	ADD		r4, hashtbl, r4
	LDRB	r5, [r4]
	ADD		hash_val, r5

hash_skip
	ADD		input_str, input_str, #
	CMP		curr_char, #0
	BNE		hash_loop
	MOVEQ	r0, hash_val
	STR		hash_val, [hashptr]
	BX		lr
}

int main( void )
{
	static const char STRING_TO_HASH[] = "FD7N8JT!EGMIQH2@3ZW0ABCRSLOYV45PK1#X6U!9";
	int hash = 0;
	int hash2;
	
	hash = generate_hash(STRING_TO_HASH, hashtbl, &hash2);
	printf("%d", hash);
	printf("%d", hash2);
	
	return 0;
}
\end{lstlisting}
