Question

1. Declare a quad-word (64 bits) variable (i.e. Label) in the DATA segment of the source code. This Labes will store an INTEGER NUMBER value entered by the user at runtime using the "C scan function 2. Declare a FORMAT string for use with the "C" scanf0 function that will accept exactly ONE INTEGER value using the %i FORMAT SPECIFIER. 3. Declare a FORMAT string for use by the "C" printf) function that PROMPTS the user to enter the INTEGER value. Choose YOUR OWN prompt message text for this step. 4. Declare a FORMAT string for use with the "C" printfO function to display the folowing string "The ORGINAL INTEGER [ %ì ] represented in HEADECİMAL notation is [ or The two format specifier "placeholders" will each be replaced by the INTEGER value entered by the user at runtime into the Label declared in Step 1 5. Use the PROMPT string from Step 3 with printf) to instruct the user to enter a single INTEGER value using the keyboard. After the prompt message is displayed in Step 5, "call" the scanf) using the FORMAT string created in Step 2. Store the input value into the Label you declared in Step 1 6. 7. When the number has been entered and stored in memory in the Label created in Step 1, use the "C" printf() function to display the ORIGINAL NUMBER as an INTEGER type AND ASLO as a HEXADECIMAL NUMBER by using the FORMAT string created in Step 4 AND the Label from Step 1 to provide the TWO DATA values for the %i and %X printf() FORMAT SPECİFIERS 8. REPEAT (L.e. DUPLICATE) the code instructions you created for Step S, Step 6 and Step 7for EACH of following numbers ONE at a time: 15, 37, 109, 352, 5296

Assembly language 64 bit please !

An example file for set up

==========+

;| Data Segment BEGINS Here |

;+======================================================================+

segment .data

;Code this expression: sum = num1+num2

num1 dq 0 ;left operand of the addition operation

num2 dq 0 ;right operand of the addition operation

sum dq 0 ;will hold the computed Sum value

RetVal dq 0 ;Integer value RETURNED by function calls

;can be ignored or used as determined by the programmer

;Message string prompting for the keyboard input

;Terminal ,0 makes them string values

;Format string for printf() function call

Prompt4Input_fmt db 0x0a,0x0a, "%Enter the %number: ",0

First_str db "FIRST",0

Second_str db "SECOND",0

Indent15_str db " ",0

Results_fmt db 0x0a,0x0a,\

" Sum of %i + %i = %0i",0x0a,0x0a,0k

;Format string for scanf() function call

GetInteger_fmt db "%i",0

;+======================================================================+

;| Data Segment ENDS Here |

;+======================================================================+

;+======================================================================+

;| Code Segment BEGINS Here |

;+======================================================================+

segment .text

global main ;Tell the Linker about the main() entry point

extern printf ;Reference "C" printf() function

extern scanf ;Reference "C" scanf() function

extern exit ;Reference "C" exit() function

main:

push rbp ;Save CURRENT RBP on the STACK

mov rbp, rsp ;Store the current RSP (stack pointer) register

;value in the RBP register

sub rsp, 40 ;MUST create room for at least the 4 possible

;parameters in a function call that are stored

;in dedicated registers (rcx,rdx,r8,r9).

;These stack locations are referred to as the

;'shadow stack space' occupying (32 bytes MINIMUM)

;on the program's stack at runtime.

; Save incoming registers on the stack

pushregs rbx,rsi,rdi,r10,r11,r12,r13,r14,r15

  

xor rax,rax ;Clear the RAX register to 0 before beginning

;Windows printf() register uses conventions...

;printf() akways has AT LEAST 1 PARAMATER....

; 'C' Parameter number: 1 2 3 4

; In 'C' syntax: printf("fmt string", val1,val2,val3);

;Up to 4 register parameters can be entered into registers

;using these SPECIFIC registers...

;Parm 1 2 3 4 processed from left to right

;in RCX, RDX, R8, R9 REGISTER ORDER

;Prompt for the first integer

lea rcx,[Prompt4Input_fmt] ;parameter 1 uses RCX

lea rdx,[Indent15_str] ;parameter 2 uses rdx

lea r8,[First_str] ;parameter 3 uses r8 (if needed)

call printf

;Get the FIRST number from the keyboard...

lea rcx,[GetInteger_fmt]

lea rdx,[num1] ;Label in DATA SEGMENT to receive the input

call scanf ;call the function, return value in RAX

mov qword [RetVal],rax ;save the return value

;Prompt for the second integer

lea rcx,[Prompt4Input_fmt] ;parameter 1 uses RCX

lea rdx,[Indent15_str] ;parameter 2 uses rdx

lea r8,[Second_str] ;parameter 3 uses r8 (if needed)

call printf

;Get the SECOND number from the keyboard...

lea rcx,[GetInteger_fmt]

lea rdx,[num2] ;Label in DATA SEGMENT to receive the input

call scanf ;call the function, return value in RAX

mov qword [RetVal],rax ;save the return value

;Compute the SUM of the two input values

xor rax,rax ;clear the Rax register to 0

mov rax,qword [num1] ;Load RAX with the first number

mov rax,qword [num2] ;Add the two values leaving the sum

;in RAX after the addition is completed

mov [sum],rax ;save the sum value in DATA SEGMENT memory

;Display the final results using printf()....

lea rcx,[Results_fmt] ;printf() format string Parameter 1

mov rdx,[num1] ;parameter 2 uses RDX

mov r8, [num2] ;parameter 3 uses r8

mov r9, [sum] ;parameter 4 uses r9

call printf

;Restores values of incoming registers that were saved on the stack by the pushregs macro

popregs rbx,rsi,rdi,r10,r11,r12,r13,r14,r15

add rsp,40 ;Revise stack to undo line #39

xor rcx,rcx ;0 return = success

call exit ;return control to the operating system

  

;+======================================================================+

;| Code Segment ENDS Here |

;+======================================================================+

Answer 1

The code as specified in the steps is as follows:

#include <stdio.h>

/* Main starts here*/

int main(int argc, const char * argv[])

{

unsigned long long label; // 64 bit variable define in C

/* Format string for prompting user for enter an integer*/

char *strprompt="\nPlease enter the value of label: \n";

/* format string for scanning 64 bit integer in C*/

char *strscan="%llu";

/* Format string for diplay integer as is and in hexadecimal notation*/

char *strdisplay="\nThe ORIGINAL INTEGER [%08llu] represented in HEXADECIMAL notation [0x%016llx]\n";

/* calling the functions and repeating the actions*/

for (int i=1;i<=5;i++)

{

printf(strprompt);

scanf(strscan, &label);

printf(strdisplay,label, label);

}

return 0;

}

OUTPUT: