https://github.com/akkartik/mu/blob/main/linux/apps/ex1.subx
 1 # First example: return the answer to the Ultimate Question of Life, the
 2 # Universe, and Everything.
 3 #
 4 # Same as https://www.muppetlabs.com/~breadbox/software/tiny/teensy.html
 5 #
 6 # To run:
 7 #   $ bootstrap/bootstrap translate apps/ex1.subx -o ex1
 8 #   $ bootstrap/bootstrap run ex1
 9 # Expected result:
10 #   $ echo $?
11 #   42
12 
13 == code
14 
15 Entry:
16 # exit(42)
17 bb/copy-to-ebx  0x2a/imm32  # 42 in hex
18 e8/call  syscall_exit/disp32
19 
20 # . . vim:nowrap:textwidth=0