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Code: Select all

rm_itoa:
	pushw	%bp
	movw	%sp, %bp
	movw	4(%bp), %ax
	movw	6(%bp), %di
	movw	%di, %si
	movb	8(%bp), %bl
	movb	$0, %bh
0:
	divw	%bx
	cmpb	$9, %dl
	jg		1f
	addb	$48, %dl
	jmp		2f
1:
	addb	$55, %dl
2:
	movb	%dl, (%di)
	cmpw	$0, %ax
	je		3f
	addw	$1, %di
	movw	$0, %dx
	jmp		0b
3:
	movb	$0, 1(%di)
4:
	cmpw	%di, %si
	jge		5f
	movb	(%di), %al
	movb	(%si), %ah
	movb	%al, (%si)
	movb	%ah, (%di)
	addw	$1, %si
	subw	$1, %di
	jmp		4b
5:
	popw	%bp
	ret

Code: Select all

	movw	%sp, %bp
	subw		$5, %sp
	movb	$10, -1(%bp)
	movw	$(buffer-_start), -3(%bp)
	movw	$50, -5(%bp)
	call		rm_itoa
buffer:	.ascii "        "

Code: Select all

(0) [0x00007d9f] 07c0:019f (unk. ctxt): div ax, bx                ; f7f3
(0) [0x000fff53] f000:ff53 (unk. ctxt): iret                      ; cf
(0) [0x00007d9f] 07c0:019f (unk. ctxt): div ax, bx                ; f7f3
(0) [0x000fff53] f000:ff53 (unk. ctxt): iret                      ; cf
...
...
...

Code: Select all

void itoa(int num, unsigned int base, char* buffer){
	unsigned int i=0,r=0;
	char tmp[32];
	if(num<0) *buffer++='-';
	num=abs(num);
	if(num < base){
		*buffer++=hexdigit(num);
		*buffer=0;
		return;
	}
	if(num >= base)
		while(num){
			r=num % base;
			num /= base;
			tmp[i++]=hexdigit(r);	
		}
	i--;
	for(; i>=0; i--) *buffer++=tmp[i];
	*buffer=0;
}