hello-arm

Some basic Arm assembly programming on Raspberry Pi

first.s

Compile:

as -o first.o first.s
gcc -o first first.o

Run:

./first

Output: (nothing)

collatz.s

Compile:

as -o collatz.o collatz.s
gcc -o collatz collatz.o

Run:

./collatz ; echo $?

Output: 25¹

hello-world.s

Compile

as -o hello-world.o hello-world.s
gcc -o hello-world hello-world.o

Run:

./hello-world

Output: Hello, world!

Footnotes

1. This is the number of iterations to get from n, which by default is 100, to 1 via the Collatz function. See Wikipedia for more details. ↩