/prog/ - argv is bloat

Name: Anonymous 2011-11-26 21:11

this_is_fasta.c :



#include <stdio.h>

#include <stdlib.h>



void _start() {

  puts("I pity the fools that lag program start and ending by calling and returning from main");

  exit(0);

}



noTIMEfor@LOVE$ gcc -c this_is_fasta.c

noTIMEfor@LOVE$ ld -I/lib/ld-linux.so.2 -lc this_is_fasta.o -o this_is_fasta

noTIMEfor@LOVE$ this_is_fasta

I pity the fools that lag program start and ending by calling and returning from main

noTIMEfor@LOVE$

Name: Anonymous 2011-11-26 21:23

ZOMG OPTIMIZATION!!!

Name: stdlib.h is bloat 2011-11-26 21:37



#include <stdio.h>



void _start() {

  puts("I pity the fools that lag program start and ending by calling and returning from main");

  asm("mov $1,%eax");

  asm("mov $0,%ebx");

  asm("int $0x80");

}

Name: Anonymous 2011-11-26 21:51

So why aren't you just using assembly?

Name: puts is bloat 2011-11-26 22:03



char* str = "I pity the fools that lag program string printing by calling puts\n";

void _start() {

  asm("mov $86,%edx"); // string length

  asm("mov str,%ecx"); // string pointer

  asm("mov $1,%ebx"); // stdout file descriptor

  asm("mov $4,%eax"); // sys_write system call

  asm("int $0x80");



  asm("mov $1,%eax"); // sys_exit system call

  asm("mov $0,%ebx"); // exit status zero

  asm("int $0x80");

}

Name: Anonymous 2011-11-26 22:10

>>5

section    .data

s:    db    "I pity the fools that bloat strings by null terminating them", 0xa 

l:    equ    $ - s



section    .text

    global    _start

_start:

    mov    eax, 4

    mov    ebx, 1

    mov    ecx, s

    mov    edx, l

    int    0x80



    mov    eax, 1

    mov    ebx, 0

    int    0x80

Name: Anonymous 2011-11-26 22:19

>>6

alas, I have been foiled once more!

Name: Anonymous 2011-11-26 22:23

>>1
You talk about bloat but here you are linking with motherfucking GLIBC.

Name: Anonymous 2011-11-26 23:44

gotta say, i love when people on /prog/ reduce code snippets down to asm

Name: Anonymous 2011-11-26 23:52

>>6
Thanks, GNU syntax really fucking sucks.

Name: Anonymous 2011-11-27 0:26

>>10

It's AT&T syntax, toggaf.

argv is bloat

1 Name: Anonymous 2011-11-26 21:11

2 Name: Anonymous 2011-11-26 21:23

3 Name: stdlib.h is bloat 2011-11-26 21:37

4 Name: Anonymous 2011-11-26 21:51

5 Name: puts is bloat 2011-11-26 22:03

6 Name: Anonymous 2011-11-26 22:10

7 Name: Anonymous 2011-11-26 22:19

8 Name: Anonymous 2011-11-26 22:23

9 Name: Anonymous 2011-11-26 23:44

10 Name: Anonymous 2011-11-26 23:52

11 Name: Anonymous 2011-11-27 0:26