ada.asm

;; ada.asm

segment     .data
format      db          "%d + %d = %d", 10, 0

segment     .text
            global      main
            extern      printf
main:

            ;; Make room for three local variables ...
            enter       12, 0

            ;; Push ebx on the stack, following C calling conventions ...
            push        ebx

            ;; Inizialize a [ebp-4] to 42 ...
            mov         dword [ebp-4], 42

            ;; Initialize b [ebp-8] to 24 ...
            mov         dword [ebp-8], 24

            ;; Initalize c [ebp-12] to 0 ...
            mov         dword [ebp-12], 0

            ;; Increment the value of c [ebp-12] to a [ebp-4] ...
            mov         ebx, [ebp-4]
            add         [ebp-12], ebx

            ;; Increment the value of c [ebp-12] to b [ebp-8] ...
            mov         ebx, [ebp-8]
            add         [ebp-12], ebx

            ;; Print out the result of the computation, using the format above ...
            push        dword [ebp-12]
            push        dword [ebp-8]
            push        dword [ebp-4]
            push        dword format
            call        printf
            add         esp, 16

            ;; Restore the value of ebx ...
            pop         ebx

            ;; Free room for the local variables ...
            leave

            ;; Return back ...
            ret