Clemson University -- CPSC 231 -- Fall 2009


you can call printf from a SPARC assembly language program

some of the details will be explained later, but for now use this
skeleton - note that you have to use the registers %o0 and %o1 for
the call to printf

  main: save  %sp, -96, %sp

        <your program>

        set   fmt, %o0
        mov   <register to print>, %o1
        call  printf
         nop

        <rest of your program>

        ret
         restore


        .section ".rodata"
  fmt:  .asciz "%d\n"


you can change the format string in "fmt" to include a label, use
a different format specifier, etc. - if you add additional values
to print, you will need to move those values into %o2, %o3, etc.

you can also add additional format strings

  main: save  %sp, -96, %sp

        <your program>

        set   fmt1, %o0
        mov   <first register to print>, %o1
        mov   <second register to print>, %o2
        call  printf
         nop

        set   fmt2, %o0
        mov   <first register to print>, %o1
        mov   <second register to print>, %o2
        call  printf
         nop

        <rest of your program>

        ret
         restore


        .section ".rodata"
  fmt1: .asciz "values in decimal are %d and %d\n"
  fmt2: .asciz "values in hex are 0x%08x and 0x%08x\n"