Question

I need some help on this assembly question, it has to be done strictly in Intel x86 64 bit assembly language and the other part in C language

The faction findRange find the range of the numbers in a given amay and retums the range The range is defined as the difference between the maximum number and the minimum number in the given amay write the function findRange both in C and in Assembly. The function stub for findRange is given int find Range(int "numberAnray, int count) /The function finds the range of the numbers the diference between the maximum and numbers in the array Example mmterArray 1. 10, 13. 4. 8. 12. 6, 1281 the valur retumed from the function 127 maximum is 12s and minimum is I. therefore the range is

Answer 1

Answer: Assembly code for findRange0 findRange: set the parameters store the register-values pushl %ebp movi %esp, %ebp pushl %edi pushl pushl number movi 8 (%ebp), %edi icount mo.. 12 (8ebR) , %esi movl (%edi), %ebx testi %esi, %esi ile L13 movl %ebx, %eax xor1 %ecx, %ecx tesi L5: movh crnpl ige movl (%edi , %ec x, 4 ) , %edx, %ebx L6 %edx, %ebx %eax L6: %eax стрї İle movl %edx , L7 %edx, %eax 17 : ine subl movl popl popl popl esh L5 %eax, %ebx, %ebx %esi %edi %ebx %eax eave ret L13: xor1 %eax, %eax register-values restore the pop, %ebx popl %esi popl %edi

eave i return to caller ret C code for findRange0 //Return the range int findRange (int *numberArray, int count) //declare the needed variables int kk: //define maxx and int maxx-numberrray0]; int minn=numbe rArray[0]; /loop to find the maxx and minn in numberArray for(kk-0; kk<countikk++) minn //check numberArray[kk]> maxx if (numberArray [kk] maxx) //set maxx to numbererra] maxx-numberArray [kk] //check numberArrayLkk] <minn if (numberArray [kk] <ma nn ) //set minn to numbererra] minn-numberArraykkl; //return range as the difference between maxx minn return maxx-minn;

copyable code:

Assembly code for findRange():

_findRange:

     ;set the parameters

     ;store the register-values

     pushl     %ebp

     movl %esp, %ebp

     pushl     %edi

     pushl     %esi

     pushl     %ebx

     ;numberArray

     movl 8(%ebp), %edi

     ;count

     movl 12(%ebp), %esi

     movl (%edi), %ebx

     testl     %esi, %esi

     jle L13

     movl %ebx, %eax

     xorl %ecx, %ecx

     .p2align 2,,3

L5:

     movl (%edi,%ecx,4), %edx

     cmpl %edx, %ebx

     jge L6

     movl %edx, %ebx

L6:

     cmpl %edx, %eax

     jle L7

     movl %edx, %eax

L7:

     incl %ecx

     cmpl %esi, %ecx

     jne L5

     subl %eax, %ebx

     movl %ebx, %eax

     popl %ebx

     popl %esi

     popl %edi

     leave

     ret

L13:

     xorl %eax, %eax

     ;restore the register-values

     popl %ebx

     popl %esi

     popl %edi

     leave

     ;return to caller

     ret

C code for findRange():

//Return the range

int findRange(int *numberArray, int count)

{

     //declare the needed variables

     int kk;

     //define maxx and minn

     int maxx=numberArray[0];

     int minn=numberArray[0];

     //loop to find the maxx and minn in numberArray

     for(kk=0;kk<count;kk++)

     {

          //check numberArray[kk] > maxx

          if(numberArray[kk]>maxx)

              //set maxx to numberArray[kk]

              maxx=numberArray[kk];

          //check numberArray[kk]<minn

          if(numberArray[kk]<minn)

              //set minn to numberArray[kk]

              minn=numberArray[kk];

     }

     //return range as the difference between maxx - minn

     return maxx-minn;

}