(in-package "SB!VM")
-;;; FIXME: It's clever using :SUFFIX -TYPE for these things, but it's
-;;; a pain for people just learning to find their way around the code
-;;; who want to use lexical search to figure out where things like
-;;; EVEN-FIXNUM-LOWTAG are defined. Remove the :SUFFIXes and just expand
-;;; out the full names. Or even define them in DEF EVEN-FIXNUM-LOWTAG
-;;; style so searches like 'def.*even-fixnum-lowtag' can find them.
+;;; FIXME: It's clever using :SUFFIX -LOWTAG for these things, but
+;;; it's a pain for people just learning to find their way around the
+;;; code who want to use lexical search to figure out where things
+;;; like EVEN-FIXNUM-LOWTAG are defined. Remove the :SUFFIXes and just
+;;; expand out the full names. Or even define them in DEF
+;;; EVEN-FIXNUM-LOWTAG style so searches like
+;;; 'def.*even-fixnum-lowtag' can find them.
;;; Tags for the main low-level types are stored in the low n (usually three)
;;; bits to identify the type of a machine word. Certain constraints
;; The EVAL-WHEN is necessary (at least for Lispworks), because the
;; second DEFENUM uses the value of OTHER-IMMEDIATE-0-LOWTAG, which is
;; defined in the first DEFENUM. -- AL 20000216
- #!+x86-64
+ #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
(defenum (:suffix -lowtag)
even-fixnum
instance-pointer
pad3 pad4 pad5
other-immediate-3
other-pointer)
- #!-x86-64
+ #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
(defenum (:suffix -lowtag)
even-fixnum
instance-pointer
;;;
;;; rather than two separate tests and jumps
(defenum (:suffix -widetag
+ ;; The first widetag must be greater than SB!VM:LOWTAG-LIMIT
+ ;; otherwise code in generic/early-type-vops will suffer
+ ;; a long, horrible death. --njf, 2004-08-09
:start (+ (ash 1 n-lowtag-bits) other-immediate-0-lowtag)
:step 4)
- bignum
- ratio
- single-float
- double-float
- complex
- complex-single-float
- complex-double-float
+ ;; NOTE: the binary numbers off to the side are only valid for 32-bit
+ ;; ports; add #x1000 if you want to know the values for 64-bit ports.
+ ;; And note that the numbers get a little scrambled further down.
+ ;; --njf, 2004-08-09
+ bignum ; 00001010
+ ratio ; 00001110
+ single-float ; 00010010
+ double-float ; 00010110
+ complex ; 00011010
+ complex-single-float ; 00011110
+ complex-double-float ; 00100010
- code-header
- simple-fun-header
- closure-header
- funcallable-instance-header
+ code-header ; 00100110
- return-pc-header
- value-cell-header
- symbol-header
- base-char
- sap
- unbound-marker
- weak-pointer
- instance-header
- fdefn
+ simple-fun-header ; 00101010
+ closure-header ; 00101110
+ funcallable-instance-header ; 00110010
- unused00
- unused01
- unused02
- unused03
- unused04
- unused05
- unused06
- unused07
- unused08
- unused09
-
- unused10
- unused11
+ return-pc-header ; 00110110
+ value-cell-header ; 00111010
+ symbol-header ; 00111110
+ character ; 01000010
+ sap ; 01000110
+ unbound-marker ; 01001010
+ weak-pointer ; 01001110
+ instance-header ; 01010010
+ fdefn ; 01010110
- simple-array-unsigned-byte-2
- simple-array-unsigned-byte-4
- simple-array-unsigned-byte-7
- simple-array-unsigned-byte-8
- simple-array-unsigned-byte-15
- simple-array-unsigned-byte-16
- simple-array-nil
- simple-base-string
- simple-bit-vector
- simple-vector
- simple-array-unsigned-byte-29
- simple-array-unsigned-byte-31
- simple-array-unsigned-byte-32
- simple-array-signed-byte-8
- simple-array-signed-byte-16
- simple-array-signed-byte-30
- simple-array-signed-byte-32
- simple-array-single-float
- simple-array-double-float
- simple-array-complex-single-float
- simple-array-complex-double-float
- simple-array
- complex-vector-nil
- complex-base-string
- complex-bit-vector
- complex-vector
- complex-array
+ unused00 ; 01011010
+ unused01 ; 01011110
+ unused02 ; 01100010
+ unused03 ; 01100110
+ unused04 ; 01101010
+ unused05 ; 01101110
+ unused06 ; 01110010
+ unused07 ; 01110110
+ unused08 ; 01111010
+ unused09 ; 01111110
+
+ #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ unused10 ; 10000010
+ #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ unused11 ; 10000110
+
+ simple-array-unsigned-byte-2 ; 10001010
+ simple-array-unsigned-byte-4 ; 10001110
+ simple-array-unsigned-byte-7 ; 10010010
+ simple-array-unsigned-byte-8 ; 10010110
+ simple-array-unsigned-byte-15 ; 10011010
+ simple-array-unsigned-byte-16 ; 10011110
+ simple-array-nil ; 10100010
+ simple-base-string ; 10100110
+ #!+sb-unicode simple-character-string
+ simple-bit-vector ; 10101010
+ simple-vector ; 10101110
+ #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-unsigned-byte-29 ; 10110010
+ simple-array-unsigned-byte-31 ; 10110110
+ simple-array-unsigned-byte-32 ; 10111010
+ #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-unsigned-byte-60
+ #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-unsigned-byte-63
+ #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-unsigned-byte-64
+ simple-array-signed-byte-8 ; 10111110
+ simple-array-signed-byte-16 ; 11000010
+ #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-signed-byte-30 ; 11000110
+ simple-array-signed-byte-32 ; 11001010
+ #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-signed-byte-61
+ #!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
+ simple-array-signed-byte-64
+ simple-array-single-float ; 11001110
+ simple-array-double-float ; 11010010
+ simple-array-complex-single-float ; 11010110
+ simple-array-complex-double-float ; 11011010
+ simple-array ; 11011110
+ complex-vector-nil ; 11100010
+ complex-base-string ; 11100110
+ #!+sb-unicode complex-character-string
+ complex-bit-vector ; 11101010
+ complex-vector ; 11101110
+ complex-array ; 11110010
+
+ #!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ unused12 ; 11110110
+ #!+(and #.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ (not sb-unicode))
+ unused13 ; 11111010
+ #!+(and #.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
+ (not sb-unicode))
+ unused14 ; 11111110
)
;;; the different vector subtypes
projects / sbcl.git / blobdiff