x86-64 assembly on Linux examples from the book Programming from the Ground Up.
http://programminggroundup.blogspot.de/2007/01/programming-from-ground-up.html
Converted to 64bit ABI with the help of:
http://blog.rchapman.org/posts/Linux_System_Call_Table_for_x86_64/
gcc -nostdlib record_writeFunc64.s write-records64.s -o write-records
or
as maximum64.s -o maximum64.o
ld maximum64.o -o maximum