mc8051fun/long_add.c

#include  "mc8051fun.h"
#include "bcd.h"

#pragma disable_warning 59  // Disable "must return a value" warning

uint8_t long_add(__idata uint8_t *v1, __idata uint8_t *v2,uint8_t len) __reentrant
{
	(void)v1; (void)v2; (void)len;
	__asm
	mov	a,_bp
	add	a,#0xfd
	mov	r0,a
	mov	a,@r0		; *v2
	mov	r1,a
	mov	a,@r0		; len
	mov	r7,a		
	mov	r0,dpl
	lcall	long_invert
	mov	dpl,#0x00
	jnc	$002
	inc	dpl
$002:
	__endasm;
}