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24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
Look at primtype.lisp and objdef.lisp (and early-objdef.lisp) for more
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up-to-date definitions of various tags. (For example, the simple
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string tag has changed since object.tex was written.)
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The string format has changed. According to "object.tex", string length is
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stored in the 24 bits of the string header. Instead, those 24 bits
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are set to zero, and string length is encoded in the same way as the
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other specialized simple-array counts, as a fixnum following the
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header.
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The number of slots for objects has changed since object.tex was
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written. The only reliable source for current slot definitions seems
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to be the primitive object data maintained by the compiler itself. See
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primtype.lisp and objdef.lisp, or look at the genesis code which reads
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this data to generate the various slot offsets in the C header file.
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The meaning of the function-self slot has changed in the X86 port:
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it points directly to the code to be executed.
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Nothing about FDEFN objects seems to be documented. FDEFN objects
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replace the simple SYMBOL-FUNCTION slot with a much more complicated
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mechanism, which I [WHN] dislike and would like to get rid of, but
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haven't [yet?].
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