path: root/subx/examples/ex1.subx

                                                                                       
                 
# First program: same as https://www.muppetlabs.com/~breadbox/software/tiny/teensy.html
# Just return 42.
#
# To run (from the subx directory):
#   $ ./subx translate examples/ex1.2.subx -o examples/ex1
#   $ ./subx run examples/ex1
# Expected result:
#   $ echo $?
#   42

== code

# syscall(exit, 42)
bb/copy-to-EBX  2a/imm32  # 42 in hex
b8/copy-to-EAX  1/imm32/exit
cd/syscall  0x80/imm8

# . . vim:nowrap:textwidth=0
# First program: same as https://www.muppetlabs.com/~breadbox/software/tiny/teensy.html
# Just return 42.
#
# To run (from the subx directory):
#   $ ./subx translate examples/ex1.2.subx -o examples/ex1
#   $ ./subx run examples/ex1
# Expected result:
#   $ echo $?
#   42

== code

# syscall(exit, 42)
bb/copy-to-EBX  2a/imm32  # 42 in hex
b8/copy-to-EAX  1/imm32/exit
cd/syscall  0x80/imm8

# . . vim:nowrap:textwidth=0