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# Initialize the minimal runtime for Mu programs.
#
# See translate_mu for how this file is used.
#
# Mu programs start at a function called 'main' with this signature:
# fn main args: (addr array kernel-string) -> exit-status/ebx: int
# If your program doesn't need commandline arguments you can drop it:
# fn main -> exit-status/ebx: int
#
# Notice that the output must be in ebx, so that the exit() syscall can pick
# it up.
== code
Entry:
# we don't use ebp in Entry; just initialize it
bd/copy-to-ebp 0/imm32
# var args/eax: (addr array kernel-string)
89/<- %eax 4/r32/esp
# initialize the heap
(new-segment *Heap-size Heap)
# run Mu program
(main %eax)
# exit
(syscall_exit)
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