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## add 1 and 1, and return the result in the exit code
#
# To run:
#   $ subx translate ex2.subx ex2
#   $ subx run ex2
# Expected result:
#   $ echo $?
#   2

== 0x08048054  # code segment, after leaving room for ELF header
# instruction             effective address                                         operand displacement    immediate
# op          subop       mod           rm32          base      index     scale     r32
# 1-3 bytes                                                                                 0/1/2/4 bytes   0/1/2/4 bytes
  bb                                                                                                        1/imm32       # copy 1 to EBX
  81          0/add/subop 3/mod/direct  3/ebx/rm32                                                          1/imm32       # add 1 to EBX
  # exit(EBX)
  b8                                                                                                        1/imm32       # copy 1 to EAX
  cd                                                                                                        128/imm8      # int 80h

# vim:ft=subx