GAS LISTING add2.s 			page 1


   1              		.file	"add2.s"
   2              		.version	"01.01"
   3              	gcc2_compiled.:
   4              	.globl buff
   5              	.data
   6              	        .align 32
   7              	        .type    buff,@object
   8              	        .size    buff,80
   9              	buff:
  10 0000 35       	        .ascii "5"
  11 0001 20706C75 	        .ascii " plus "
  11      7320
  12              	buff2:
  13 0007 34       	        .ascii "4"
  14 0008 20657175 	        .ascii " equals "
  14      616C7320 
  15              	buff3:
  16 0010 39       	        .ascii "9"
  17 0011 0A00     	        .string "\n"
  18 0013 00000000 	        .zero 62
  18      00000000 
  18      00000000 
  18      00000000 
  18      00000000 
  19              	.section        .rodata
  20              	.text
  21              		.align 4
  22              	.globl main
  23              		.type	 main,@function
  24              	main:
  25 0000 55       		pushl %ebp		# Save the old frame pointer
  26 0001 89E5     		movl %esp, %ebp		# Start a new fram here
  27 0003 6A12     		pushl $18               # Setup buffer size
  28 0005 68000000 		pushl $buff             #  buffer start address and 
  28      00
  29 000a 6A01     		pushl $1                #  file descriptor for standard out
  30 000c E8FCFFFF 		call write              #  and use low-level write service
  30      FF
  31 0011 83C40C   		addl $12, %esp          # Reset stack pointer
  32 0014 C6050000 	        movb $'1', buff         # Put an ASCII 1 in the buffer
  32      000031
  33 001b 832D0000 	        sub $'0', buff          #  and make it binary
  33      000030
  34 0022 C6050700 	        movb $50, buff2         # Put an ASCII 2 in the buffer
  34      000032
  35 0029 80050700 	        addb $-48, buff2        #  and make it binary
  35      0000D0
  36 0030 31C0     	        xor %eax, %eax          # Clear all 32 bits of the acumulator
  37 0032 02050000 	        addb buff, %eax         # Add the first binary number
  37      0000
  38 0038 02050700 	        addb buff2, %eax        # Add the second binary number
  38      0000
  39 003e 80050000 	        addb $'0', buff         # Make first number ASCII
  39      000030
  40 0045 80050700 	        addb $'0', buff2        # Make second number ASCII
  40      000030
  41 004c 0430     	        addb $'0', %eax         # Make the result ASCII

  42 004e 88051000 	        movb %eax, buff3        # Save result in the buffer
  42      0000
  43 0054 6A12     	        pushl $18               # Do
  44 0056 68000000 	        pushl $buff             #  write
  44      00
  45 005b 6A01     	        pushl $1                #   system
  46 005d E8FCFFFF 	        call write              #    service
  46      FF
  47 0062 83C40C   	        addl $12,%esp           #  and reset stack pointer
  48              	.L1:
  49 0065 C9       		leave
  50 0066 C3       		ret
  51              	.Lfe1:
  52              		.size	 main,.Lfe1-main
  53              		.ident	"GCC: (GNU) egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)"

DEFINED SYMBOLS
                            *ABS*:00000000 add2.s
                ab.s:3      .text:00000000 gcc2_compiled.
                ab.s:9      .data:00000000 buff
                ab.s:12     .data:00000007 buff2
                ab.s:15     .data:00000010 buff3
                ab.s:24     .text:00000000 main

UNDEFINED SYMBOLS
write