; Hello World Assembly Version (IA-64)

; using POSIX syscalls 0x01 (write), 0x3C (exit)

global _start ; define entry label

section .text

_start:

; write the string buffer to STDOUT via write() POSIX systemcall

mov rax, 0x01 ; invoke write64() syscall

mov rdi, 0x01 ; set file descriptor STDOUT_FILENO to STDOUT(1)

mov rsi, helloText ; pointer to the string buffer

mov rdx, helloLen ; size of the buffer

syscall ; request a write

; Quit the program in an orderly fashion:

mov rax, 0x3C ; invoke exit64() syscall

mov rdi, 0x00 ; set exit value (0 = EXIT_SUCCESS)

syscall ; request termination

section .rodata

helloText: db 'This is a write() 64bit syscall!', 0x0A ; Output, followed by "\n" character

helloLen: equ $ - helloText ; get sizeof(helloText), needed for write() later