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