Message-ID: <4232F642.2050704@tiscali.de>
Date: Sat, 12 Mar 2005 15:01:38 +0100
From: Matthias-Christian Ott <matthias.christian@tiscali.de>
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To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Strange Linking Problem
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Hi!
I hope I'm right here. I've the following assembler code:

SECTION .DATA
        hello:     db 'Hello world!',10
        helloLen:  equ $-hello

SECTION .TEXT
        GLOBAL main

main:


        ; Write 'Hello world!' to the screen
        mov eax,4            ; 'write' system call
        mov ebx,1            ; file descriptor 1 = screen
        mov ecx,hello        ; string to write
        mov edx,helloLen     ; length of string to write
        int 80h              ; call the kernel

        ; Terminate program
        mov eax,1            ; 'exit' system call
        mov ebx,0            ; exit with error code 0
        int 80h              ; call the kernel


Then I run:

nasm -f elf hello.asm


I link it with ld and run it:

ld -s -o hello hello.o
./hello
segmentation fault


I link it with the gcc and run it:

gcc hello.o -o hello
./hello
Hello world!


What's wrong with the ld?

Matthias-Christian Ott
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