.equ EXIT, 1
.equ READ, 3
.equ WRITE, 4
.equ CLOSE, 6
.equ PIPE, 42

.equ STDOUT, 0

.equ PIPE_WRITE, 4
.equ PIPE_READ, 0

.section .data
hello:
  .ascii "Hello\n"

.section .bss
.lcomm buf, 6
.lcomm pipes, 8

.section .text
.globl _start
_start:
    movl $PIPE, %eax
    movl $pipes, %ebx
    int $0x80

    movl $WRITE, %eax
    movl $pipes, %ecx
    movl PIPE_WRITE(%ecx), %ebx
    movl $hello, %ecx
    movl $6, %edx
    int $0x80

    movl $CLOSE, %eax
    int $0x80

    movl $READ, %eax
    movl $pipes, %ecx
    movl PIPE_READ(%ecx), %ebx
    movl $buf, %ecx
    movl $6, %edx
    int $0x80

    movl $CLOSE, %eax
    int $0x80

    movl $WRITE, %eax
    movl $STDOUT, %ebx
    movl $buf, %ecx
    movl $6, %edx
    int $0x80

    movl $EXIT, %eax
    movl $0, %ebx
    int $0x80