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DForshner/helloassembly.s

Created December 18, 2014 18:39
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Hello world in assembly
Raw
helloassembly.s
# ---------------------------------------------------------------
# Hello assembly!
# Compile: gcc -o helloassembly -nostdlib helloassembly.s
# Tested on Ubuntu 14 (x64)
# ---------------------------------------------------------------
.global _start
.text
_start:
# write(1, message, 13)
mov $1, %rax # system call ID (1 is write)
mov $1, %rdi # file handle 1 is stdout
mov $message, %rsi # address of string to output
mov $17, %rdx # string length
syscall # system call invocation
# exit(0)
mov $60, %rax # system call ID (60 is exit)
xor %rdi, %rdi # return code 0
syscall # system call invocation
message:
.ascii "Hello, Assembly!\n"
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