CSC231 HexDump Exercise Solution

--D. Thiebaut 12:46, 14 September 2012 (EDT)

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Solution of Hexdump exercise

     1                                  ;;; mickeyMouse.asm
     2                                  ;;; D. Thiebaut
     3                                  ;;;
     4                                  ;;; Display "Hello Mickey" on the screen, followed by 3 line-feeds.
     5                                  ;;;
     6                                  ;;; To assemble, link, and run:
     7                                  ;;; 	nasm -f elf -F stabs mickeyMouse.asm
     8                                  ;;; 	ld -melf_i386 -o mickeyMouse mickeyMouse.o
     9                                  ;;; 	./mickeyMouse
    10                                  ;;;
    11                                  
    12                                  		section	.data
    13 00000000 48656C6C6F204D6963-     Hello		db	"Hello Mickey"
    14 00000009 6B6579             
    15 0000000C 204D6F75736521          Mouse	        db      " Mouse!"
    16 00000013 0A0A0A                  lflflf		db	10, 10, 10
    17                                  
    18                                  
    19                                  		section	.text
    20                                  		global	_start
    21                                  _start:	
    22                                  
    23                                  ;;; print "Hello Mickey"
    24 00000000 B804000000              		mov	eax, 4			; write
    25 00000005 BB01000000              		mov	ebx, 1			; stdout
    26 0000000A B9[00000000]            		mov	ecx, Hello		; address of message to print
    27 0000000F BA0C000000              		mov	edx, Mouse-Hello	; # of chars to print
    28 00000014 CD80                    		int 	0x80
    29                                  
    30                                  ;;; print 3 line-feed chars
    31                                  
    32 00000016 B804000000              		mov	eax, 4			; write
    33 0000001B BB01000000              		mov	ebx, 1			; stdout
    34 00000020 B9[13000000]            		mov	ecx, lflflf		; address of message to print
    35 00000025 BA03000000              		mov	edx, 3			; # of chars to print
    36 0000002A CD80                    		int 	0x80
    37                                  ;;; exit
    38 0000002C BB00000000              		mov	ebx, 0
    39 00000031 B801000000              		mov	eax, 1
    40 00000036 CD80                    		int	0x80
    41                                  
    42