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32.1.4 External Entry Points

Things that need to be done on XEP entry: 1] Allocate frame 2] Move more arg above the frame, saving context 3] Set up env, saving closure pointer if closure 4] Move arguments from closure to local home Move old-cont and return-pc to the save locations 5] Argument count checking and dispatching

XEP VOPs:

Allocate-Frame
Copy-More-Arg <nargs-tn> 'fixed {in a3} => <context>, <count>
Setup-Environment
Setup-Closure-Environment => <closure>
Verify-Argument-Count <nargs-tn> 'count {for fixed-arg lambdas}
Argument-Count-Error <nargs-tn> {Drop-thru on hairy arg dispatching}
Use fast-if-=/fixnum and fast-if-</fixnum for dispatching.

Closure vops:

make-closure <fun entry> <slot count> => <closure>
closure-init <closure> <values> 'slot

Things that need to be done on all function entry:

• Move arguments to the variable home (consing value cells as necessary)
• Move environment values to the local home
• Move old-cont and return-pc to the save locations