.section    .rodata
    .align 8
.jumpTable:
    .quad   .option50
    .quad   .option51
    .quad   .option52
    .quad   .option53
    .quad   .option54
    .quad   .defaultOption

strFormatForScanf:  .string "%c"
str:            .string "In run_func\n"
stringForStrlen:    .string "first pstring length: %d, second pstring length: %d\n"
strForSwapCase:     .string "length: , string: %s\n"
    ########
    .text
.global run_func
    .type run_func,@function
run_func:
    pushq   %rbp        #save the old frame pointer
    movq    %rsp,   %rbp    #create the new frame pointer
    movq    %rsi, %r12  #save the first pstring in a caller saver register
    movq    %rdx, %r13  #save the second pstring in a caller saver register

    subq $50, %rdi
    cmpq $5, %rdi
    ja  .defaultOption
    jmp *.jumpTable(,%rdi,8)

     .option50:
    movq    %r12, %rdi          #send the first pstring as a parameter to pstrlen
    call    pstrlen
    movq    %rax, %rsi          #move the return value into the second parameter for printf
    movq    %r13, %rdi          #send the second pstring as a parameter to pstrlen
    call    pstrlen
    movq    %rax, %rdx          #move the return value into the thrid parameter to printf
    movq    $stringForStrlen, %rdi      #save the string as the first parameter to printf
    movq    $0, %rax
    call    printf
    movq    $0, %rax
    jmp .defaultOption

      .option51:
    movq    %r12 ,%rdi
    #call   replaceChar

    subq    $1, %rsp
    movq    %rsp, %r14
    subq    $1, %rsp
    movq    %rsp, %r15


    movq    $strFormatForScanf, %rdi    #first param to scanf
    movq    %r14, %rsi
    #subq   $2, %rsp            #increase the stack
    #movq   1(%rsp), %rsi           #second param to scanf
    movq    $0, %rax
    call    scanf
    movq    $0, %rax
    call    replaceChar

    #movq   $0, %rax

    #movq   $delete, %rdi           #first param to printf
    #movq   4(%rsp), %rsi           #second param to printf
    #movq   $0, %rax
    #call   printf
    jmp .defaultOption