[Pgubook-readers] Strange Problem with exit.s

[Digvijoy Chatterjee]

Hi List,
I was trying to run the first example(exit.s) in Programming from Ground Up,
i.e.

.section .data
.section .text
.globl _start
_start:
movl $1 , %eax
movl $2 , %ebx
int $0x80

I compile and run using:
 as exit.s -o exit.o;ld exit.o -o exit ; ./exit
This  results in a segmentation fault , no matter what I do 
 but when i add the two  extra lines(allocating a long/word/byte in the memory) as below, the program works fine 
.section .data
data:
.long 1
.section .text
.globl _start

_start:
movl $1 , %eax
movl $2 , %ebx
int $0x80

Has it something to do with assembler version , like the book being out of sync with the latest in as , i am just a beginner so forgive me if what i guess is naive.

linux:~/XML/Grid/source # as -v
GNU assembler version 2.16.91.0.2 (i586-suse-linux) using BFD version 2.16.91.0.2 20050720 (SuSE Linux)


Digz ( Please cc to my ID as  I am not a member of the list)

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