linux/apps/ex2.subx


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# Add 3 and 4, and return the result in the exit code.
#
# To run:
#   $ bootstrap/bootstrap translate apps/ex2.subx -o ex2
#   $ bootstrap/bootstrap run ex2
# Expected result:
#   $ echo $?
#   2

== code

Entry:
# ebx = 3
bb/copy-to-ebx  3/imm32
# add 4 to ebx
81 0/subop/add 3/mod/direct 3/rm32/ebx 4/imm32
# exit(ebx)
e8/call  syscall_exit/disp32

# . . vim:nowrap:textwidth=0