Hello.
---
bash-2.05b# cat exit.s
global _start:
_start:
xor ebx, ebx
mov eax, 1
int 80h
$ uname -srp
Linux 2.6.11-gentoo-r3 AMD Duron(tm) Processor
bash-2.05b# nasm -f elf -o exit.o exit.s
bash-2.05b# ld -o exit exit.o
bash-2.05b# ./exit
Naruszenie ochrony pamieci ( seg fault )
bash-2.05b# strace ./exit
execve("./exit", ["./exit"], [/* 45 vars */]) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
# objdump -D exit
exit: file format elf32-i386
Disassembly of section .text:
080480a0 <_start>:
80480a0: 31 db xor %ebx,%ebx
80480a2: b8 01 00 00 00 mov $0x1,%eax
80480a7: cd 80 int $0x80
Disassembly of section .comment:
00000000 <.comment>:
0: 00 54 68 65 add %dl,0x65(%eax,%ebp,2)
4: 20 4e 65 and %cl,0x65(%esi)
7: 74 77 je 80 <_start-0x8048020>
9: 69 64 65 20 41 73 73 imul $0x65737341,0x20(%ebp,2),%esp
10: 65
11: 6d insl (%dx),%es:(%edi)
12: 62 6c 65 72 bound %ebp,0x72(%ebp,2)
16: 20 30 and %dh,(%eax)
18: 2e 39 38 cmp %edi,%cs:(%eax)
1b: 2e 33 38 xor %cs:(%eax),%edi
# objdump -x exit
exit: file format elf32-i386
exit
architecture: i386, flags 0x00000112:
EXEC_P, HAS_SYMS, D_PAGED
start address 0x080480a0
The same code under as:
bash-2.05b# cat exit.s
.global _start
_start:
xor %ebx, %ebx
mov $1, %eax
int $0x80
bash-2.05b# as -o exit.o exit.s
bash-2.05b# ld -o exit exit.o
bash-2.05b# ./exit
bash-2.05b# strace ./exit
execve("./exit", ["./exit"], [/* 45 vars */]) = 0
_exit(0)
# objdump -D exit
exit: file format elf32-i386
Disassembly of section .text:
08048094 <_start>:
8048094: 31 db xor %ebx,%ebx
8048096: b8 01 00 00 00 mov $0x1,%eax
804809b: cd 80 int $0x80
---
Any ideas why the same code doesn't work under asm?
# nasm -v
NASM version 0.98.38 compiled on Mar 26 2005
( installed from gentoo portage )
i've tried to rebuild nasm but it didn't solve my problem.
Any ideas what's wrong?
Thanks.
--
Shm - shm ( at ) irc7 ( dot ) pl
EKG: 2099452 JID: [EMAIL PROTECTED]
homepage : http://shm.nation.pl/
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