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--- PORTING
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-[Need to write better notes.]
-
-Look for files named *386* or *FreeBSD* and you'll see what
-you need to implement for your architecture of choice.
-
-The hardest thing is probably the assembly routines: 
-src/lib9/tas-$SYSTYPE.s and src/libthread/asm-$SYSTYPE-$OBJTYPE.s.
-The former is a test and set used to implement shared-memory
-spin locks.  The latter is a stripped down setjmp and longjmp
-used to implement stack switching in the thread library.
-Also, src/libthread/$OBJTYPE.c needs to know how to set up a stack
-frame for the given object type.
-
-If you're only interested in mk and sam, you don't need to
-write any assembly to do a port.  Acme and samterm require everything
-though, since it uses libthread.
-