Read the assembly code and the function prototype carefully and answer the following questions:

a. How do you change the prototype code so that you can pass count to the function instead of

using the global variable?

b. How do you change the assembly code so that you can use the passed argument for count

instead of the global variable?

here is the code

AREA strcopy, CODE

IMPORT count

EXPORT strcpy_asm_in_s

ALIGN

strcpy_asm_in_s PROC

LDR r2, =count

LDR r2, [r2]

SUB r2, r2, #1

loop CMP r2, #0

BEQ end_loop

LDRB r3, [r0], #1

STRB r3, [r1], #1

SUB r2, #1

B loop

end_loop

STRB r2, [r1]

BX lr

ENDP

END

The above function has to be declared in a .c file before it can be used, as shown below.

extern void strcpy_asm_in_s(const char *src, char *dst);

uint8_t count = 20;