Assembly DataTypes

#demo program to show how to use diffrent data types in assembly

.data
        HelloWorld:
                .ascii "Hello World!"
        ByteLocation:#8bits
                .byte 10
        Int32:#32bits
                .int 2
        Int16:#16bits interger or single 32bit floating point
                .short 3
        float:
                .float 10.23
        IntergerArray:
                .int 10,20,30,40,50

.bss
        .comm LargeBuffer, 10000

.text
        .globl _start

        _start:
          nop # no operation flag
        # 1 MOV immeditate value into the register
        movl $10, %eax
        # 2 Mov immediate value into memory location
        movw $50, Int16 # note movw w=word 16bits
        # 3 MOV data between registers
        movl %eax, %ebx
        # 4 mov data from (all.data is loaded into mem first)memory to register
        movl Int32,%eax
        # 5 MOV data from register to memory
        movb $3, %al # using al as it's an 8bit register
        movb %al, ByteLocation #moving %al to ByteLocation
        # 6 Move data into an indexed memroy location
        # Location is decided byBaseAddress(Offset,index,Datasize)
        #Offset and index MUST be registers, Datasize can be a numerical value
        movl $0, %ecx#offsert
        movl $2, %edi#index (0,1,2) so pointint to 30
        movl $22,IntergerArray(%ecx,%edi,4) #
        # 7 Indirect addressing using registers
        movl $Int32, %eax # address of int32 copied to eax
        movl (%eax) , %ebx # using the addres of eax int32 is coptied to ebx(2)
        # copying 9 into the memoery location %eax thats pointing to Int32
        movl $9, (%eax)
        # Exit the programmmmmmm
        movl $1, %eax
        movl $0, %ebx
        int $0x80
# http://stackoverflow.com/questions/1898834/why-would-one-use-movl-1-eax-as-opposed-to-say-movb-1-eax
# http://hackipedia.org/Books/Other/Programming%20From%20the%20Ground%20Up/ProgrammingGroundUp-1-0-booksize.pdf