;;;; FOP definitions
-(in-package "SB!IMPL")
+(in-package "SB!FASL")
;;; Define NAME as a fasl operation, with op-code FOP-CODE. PUSHP
;;; describes what the body does to the fop stack:
`(with-fop-stack ,pushp ,@forms)))
(%define-fop ',name ,fop-code)))
-;;; FIXME: This can be byte coded.
(defun %define-fop (name code)
(let ((oname (svref *fop-names* code)))
(when (and oname (not (eq oname name)))
;;; know both the 1-byte-arg and the 4-byte-arg fop names. -- WHN 19990902
(defmacro define-cloned-fops ((name code &optional (pushp t))
(small-name small-code) &rest forms)
- (check-type pushp (member nil t :nope))
+ (aver (member pushp '(nil t :nope)))
`(progn
(macrolet ((clone-arg () '(read-arg 4)))
(define-fop (,name ,code ,pushp) ,@forms))
(macrolet ((clone-arg () '(read-arg 1)))
(define-fop (,small-name ,small-code ,pushp) ,@forms))))
-;;; a helper function for reading string values from FASL files: sort of like
-;;; READ-SEQUENCE specialized for files of (UNSIGNED-BYTE 8), with an automatic
-;;; conversion from (UNSIGNED-BYTE 8) into CHARACTER for each element read
+;;; a helper function for reading string values from FASL files: sort
+;;; of like READ-SEQUENCE specialized for files of (UNSIGNED-BYTE 8),
+;;; with an automatic conversion from (UNSIGNED-BYTE 8) into CHARACTER
+;;; for each element read
(declaim (ftype (function (stream simple-string &optional index) (values)) read-string-as-bytes))
(defun read-string-as-bytes (stream string &optional (length (length string)))
(dotimes (i length)
;;; Setting this variable causes execution of a FOP-NOP4 to produce
;;; output to *DEBUG-IO*. This can be handy when trying to follow the
-;;; progress of FASLOAD.
+;;; progress of FASL loading.
#!+sb-show
(defvar *show-fop-nop4-p* nil)
-;;; CMU CL had a single no-op fop, FOP-NOP, with fop code 0. Since 0 occurs
-;;; disproportionately often in fasl files for other reasons, FOP-NOP is less
-;;; than ideal for writing human-readable patterns into fasl files for
-;;; debugging purposes. There's no shortage of unused fop codes, so we add this
-;;; second NOP, which reads 4 arbitrary bytes and discards them.
+;;; CMU CL had a single no-op fop, FOP-NOP, with fop code 0. Since 0
+;;; occurs disproportionately often in fasl files for other reasons,
+;;; FOP-NOP is less than ideal for writing human-readable patterns
+;;; into fasl files for debugging purposes. There's no shortage of
+;;; unused fop codes, so we add this second NOP, which reads 4
+;;; arbitrary bytes and discards them.
(define-fop (fop-nop4 137 :nope)
(let ((arg (read-arg 4)))
(declare (ignorable arg))
;;; (1) *LOAD-SYMBOL-BUFFER-SIZE* is redundant, should just be
;;; (LENGTH *LOAD-SYMBOL-BUFFER*).
;;; (2) *LOAD-SYMBOL-BUFFER* should not have a global value, but should
-;;; be bound on entry to FASLOAD, and it should be renamed to
-;;; *FASLOAD-SYMBOL-BUFFER*.
+;;; be bound on entry to FASL loading, and it should be renamed to
+;;; *FASL-SYMBOL-BUFFER*.
(macrolet (;; FIXME: Should all this code really be duplicated inside
;; each fop? Perhaps it would be better for this shared
(n-size (gensym))
(n-buffer (gensym)))
`(define-fop (,name ,code)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(let ((,n-package ,package)
(,n-size (fast-read-u-integer ,name-size)))
(when (> ,n-size *load-symbol-buffer-size*)
(* ,n-size 2)))))
(done-with-fast-read-byte)
(let ((,n-buffer *load-symbol-buffer*))
- (read-string-as-bytes *fasl-file*
+ (read-string-as-bytes *fasl-input-stream*
,n-buffer
,n-size)
(push-fop-table (intern* ,n-buffer
,n-size
,n-package)))))))))
- ;; Note: CMU CL had FOP-SYMBOL-SAVE and FOP-SMALL-SYMBOL-SAVE, but since they
- ;; made the behavior of the fasloader depend on the *PACKAGE* variable, not
- ;; only were they a pain to support (because they required various hacks to
- ;; handle *PACKAGE*-manipulation forms) they were basically broken by design,
- ;; because ANSI gives the user so much flexibility in manipulating *PACKAGE*
- ;; at load-time that no reasonable hacks could possibly make things work
- ;; right. The ones used in CMU CL certainly didn't, as shown by e.g.
+ ;; Note: CMU CL had FOP-SYMBOL-SAVE and FOP-SMALL-SYMBOL-SAVE, but
+ ;; since they made the behavior of the fasloader depend on the
+ ;; *PACKAGE* variable, not only were they a pain to support (because
+ ;; they required various hacks to handle *PACKAGE*-manipulation
+ ;; forms) they were basically broken by design, because ANSI gives
+ ;; the user so much flexibility in manipulating *PACKAGE* at
+ ;; load-time that no reasonable hacks could possibly make things
+ ;; work right. The ones used in CMU CL certainly didn't, as shown by
+ ;; e.g.
;; (IN-PACKAGE :CL-USER)
;; (DEFVAR CL::*FOO* 'FOO-VALUE)
;; (EVAL-WHEN (:COMPILE-TOPLEVEL :LOAD-TOPLEVEL :EXECUTE)
(fop-uninterned-small-symbol-save 13)
(let* ((arg (clone-arg))
(res (make-string arg)))
- (read-string-as-bytes *fasl-file* res)
+ (read-string-as-bytes *fasl-input-stream* res)
(push-fop-table (make-symbol res))))
(define-fop (fop-package 14)
\f
;;;; fops for loading numbers
-;;; Load a signed integer LENGTH bytes long from *FASL-FILE*.
+;;; Load a signed integer LENGTH bytes long from *FASL-INPUT-STREAM*.
(defun load-s-integer (length)
(declare (fixnum length))
;; #+cmu (declare (optimize (inhibit-warnings 2)))
(do* ((index length (1- index))
- (byte 0 (read-byte *fasl-file*))
+ (byte 0 (read-byte *fasl-input-stream*))
(result 0 (+ result (ash byte bits)))
(bits 0 (+ bits 8)))
((= index 0)
(load-s-integer (clone-arg)))
(define-fop (fop-word-integer 35)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(fast-read-s-integer 4)
(done-with-fast-read-byte))))
(define-fop (fop-byte-integer 36)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(fast-read-s-integer 1)
(done-with-fast-read-byte))))
(%make-complex (pop-stack) im)))
(define-fop (fop-complex-single-float 72)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(complex (make-single-float (fast-read-s-integer 4))
(make-single-float (fast-read-s-integer 4)))
(done-with-fast-read-byte))))
(define-fop (fop-complex-double-float 73)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(let* ((re-lo (fast-read-u-integer 4))
(re-hi (fast-read-u-integer 4))
#!+long-float
(define-fop (fop-complex-long-float 67)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(let* ((re-lo (fast-read-u-integer 4))
#!+sparc (re-mid (fast-read-u-integer 4))
(done-with-fast-read-byte))))
(define-fop (fop-single-float 46)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1 (make-single-float (fast-read-s-integer 4))
(done-with-fast-read-byte))))
(define-fop (fop-double-float 47)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(let ((lo (fast-read-u-integer 4)))
(make-double-float (fast-read-s-integer 4) lo))
#!+long-float
(define-fop (fop-long-float 52)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(let ((lo (fast-read-u-integer 4))
#!+sparc (mid (fast-read-u-integer 4))
(define-cloned-fops (fop-string 37) (fop-small-string 38)
(let* ((arg (clone-arg))
(res (make-string arg)))
- (read-string-as-bytes *fasl-file* res)
+ (read-string-as-bytes *fasl-input-stream* res)
res))
(define-cloned-fops (fop-vector 39) (fop-small-vector 40)
(define-fop (fop-single-float-vector 84)
(let* ((length (read-arg 4))
(result (make-array length :element-type 'single-float)))
- (read-n-bytes *fasl-file* result 0 (* length sb!vm:word-bytes))
+ (read-n-bytes *fasl-input-stream* result 0 (* length sb!vm:word-bytes))
result))
(define-fop (fop-double-float-vector 85)
(let* ((length (read-arg 4))
(result (make-array length :element-type 'double-float)))
- (read-n-bytes *fasl-file* result 0 (* length sb!vm:word-bytes 2))
+ (read-n-bytes *fasl-input-stream* result 0 (* length sb!vm:word-bytes 2))
result))
#!+long-float
(define-fop (fop-long-float-vector 88)
(let* ((length (read-arg 4))
(result (make-array length :element-type 'long-float)))
- (read-n-bytes *fasl-file*
+ (read-n-bytes *fasl-input-stream*
result
0
(* length sb!vm:word-bytes #!+x86 3 #!+sparc 4))
(define-fop (fop-complex-single-float-vector 86)
(let* ((length (read-arg 4))
(result (make-array length :element-type '(complex single-float))))
- (read-n-bytes *fasl-file* result 0 (* length sb!vm:word-bytes 2))
+ (read-n-bytes *fasl-input-stream* result 0 (* length sb!vm:word-bytes 2))
result))
(define-fop (fop-complex-double-float-vector 87)
(let* ((length (read-arg 4))
(result (make-array length :element-type '(complex double-float))))
- (read-n-bytes *fasl-file* result 0 (* length sb!vm:word-bytes 2 2))
+ (read-n-bytes *fasl-input-stream* result 0 (* length sb!vm:word-bytes 2 2))
result))
#!+long-float
(define-fop (fop-complex-long-float-vector 89)
(let* ((length (read-arg 4))
(result (make-array length :element-type '(complex long-float))))
- (read-n-bytes *fasl-file* result 0
+ (read-n-bytes *fasl-input-stream* result 0
(* length sb!vm:word-bytes #!+x86 3 #!+sparc 4 2))
result))
;;; This must be packed according to the local byte-ordering, allowing us to
;;; directly read the bits.
(define-fop (fop-int-vector 43)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(let* ((len (fast-read-u-integer 4))
(size (fast-read-byte))
(res (case size
size)))))
(declare (type index len))
(done-with-fast-read-byte)
- (read-n-bytes *fasl-file*
+ (read-n-bytes *fasl-input-stream*
res
0
(ceiling (the index (* size len))
sb!vm:byte-bits))
res)))
-;;; FOP-SIGNED-INT-VECTOR
-;;;
-;;; Same as FOP-INT-VECTOR, except this is for signed simple-arrays.
-;;; It appears that entry 50 and 51 are clear.
+;;; This is the same as FOP-INT-VECTOR, except this is for signed
+;;; SIMPLE-ARRAYs.
(define-fop (fop-signed-int-vector 50)
- (prepare-for-fast-read-byte *fasl-file*
+ (prepare-for-fast-read-byte *fasl-input-stream*
(let* ((len (fast-read-u-integer 4))
(size (fast-read-byte))
(res (case size
size)))))
(declare (type index len))
(done-with-fast-read-byte)
- (read-n-bytes *fasl-file*
+ (read-n-bytes *fasl-input-stream*
res
0
(ceiling (the index (* (if (= size 30)
;; (load-fresh-line)
;; (prin1 result)
;; (terpri))
- ;; Unfortunately, this dependence on the *LOAD-PRINT* global variable is
- ;; non-ANSI, so for now we've just punted printing in fasload.
+ ;; Unfortunately, this dependence on the *LOAD-PRINT* global
+ ;; variable is non-ANSI, so for now we've just punted printing in
+ ;; fasl loading.
result))
(define-fop (fop-eval-for-effect 54 nil)
(sb!vm:sanctify-for-execution component)
component))
-;;; This a no-op except in cold load. (In ordinary warm load, everything
-;;; involved with function definition can be handled nicely by ordinary
-;;; toplevel code.)
(define-fop (fop-fset 74 nil)
- (pop-stack)
- (pop-stack))
+ ;; Ordinary, not-for-cold-load code shouldn't need to mess with this
+ ;; at all, since it's only used as part of the conspiracy between
+ ;; the cross-compiler and GENESIS to statically link FDEFINITIONs
+ ;; for cold init.
+ (warn "~@<FOP-FSET seen in ordinary load (not cold load) -- quite strange! ~
+If you didn't do something strange to cause this, please report it as a ~
+bug.~:@>")
+ ;; Unlike CMU CL, we don't treat this as a no-op in ordinary code.
+ ;; If the user (or, more likely, developer) is trying to reload
+ ;; compiled-for-cold-load code into a warm SBCL, we'll do a warm
+ ;; assignment. (This is partly for abstract tidiness, since the warm
+ ;; assignment is the closest analogy to what happens at cold load,
+ ;; and partly because otherwise our compiled-for-cold-load code will
+ ;; fail, since in SBCL things like compiled-for-cold-load %DEFUN
+ ;; depend more strongly than in CMU CL on FOP-FSET actually doing
+ ;; something.)
+ (let ((fn (pop-stack))
+ (name (pop-stack)))
+ (setf (fdefinition name) fn)))
-;;; Modify a slot in a Constants object.
+;;; Modify a slot in a CONSTANTS object.
(define-cloned-fops (fop-alter-code 140 nil) (fop-byte-alter-code 141)
(let ((value (pop-stack))
(code (pop-stack)))
(load-fresh-line)
(format t "~S defined~%" fun))
fun)))
-
-(define-fop (fop-make-byte-compiled-function 143)
- (let* ((size (read-arg 1))
- (layout (pop-stack))
- (res (%make-funcallable-instance size layout)))
- (declare (type index size))
- (do ((n (1- size) (1- n)))
- ((minusp n))
- (declare (type (integer -1 #.most-positive-fixnum) n))
- (setf (%funcallable-instance-info res n) (pop-stack)))
- (initialize-byte-compiled-function res)
- ;; FIXME: See the comment about *LOAD-PRINT* in FOP-EVAL.
- #+nil (when *load-print*
- (load-fresh-line)
- (format t "~S defined~%" res))
- res))
\f
-;;;; Some Dylan fops used to live here. By 1 November 1998 the code was
-;;;; sufficiently stale that the functions it called were no longer defined,
-;;;; so I (William Harold Newman) deleted it.
+;;;; Some Dylan FOPs used to live here. By 1 November 1998 the code
+;;;; was sufficiently stale that the functions it called were no
+;;;; longer defined, so I (William Harold Newman) deleted it.
;;;;
;;;; In case someone in the future is trying to make sense of FOP layout,
;;;; it might be worth recording that the Dylan FOPs were
(code-object (pop-stack))
(len (read-arg 1))
(sym (make-string len)))
- (read-n-bytes *fasl-file* sym 0 len)
+ (read-n-bytes *fasl-input-stream* sym 0 len)
(sb!vm:fixup-code-object code-object
(read-arg 4)
(foreign-symbol-address-as-integer sym)