;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.
-(in-package "SB!IMPL")
-\f
-;;;; variables
-
-;;; FIXME: It's awkward having LOAD stuff in SB!IMPL and dump stuff in
-;;; SB!C. Among other things, it makes it hard to figure out where
-;;; *FASL-HEADER-STRING-START-STRING* and
-;;; *FASL-HEADER-STRING-STOP-CHAR-CODE* should go. Perhaps we should
-;;; make a package called SB-DUMP or SB-LD which includes all
-;;; knowledge of both loading and dumping.
-
-;;; This value is used to identify fasl files. Even though this is not
-;;; declared as a constant (because ANSI Common Lisp has no facility
-;;; for declaring values which are constant under EQUAL but not EQL),
-;;; obviously you shouldn't mess with it lightly. If you do set a new
-;;; value for some reason, keep these things in mind:
-;;; * To avoid confusion with the similar but incompatible CMU CL
-;;; fasl file format, the value should not be "FASL FILE", which
-;;; is what CMU CL used for the same purpose.
-;;; * Since its presence at the head of a file is used by LOAD to
-;;; decide whether a file is to be fasloaded or just loaded
-;;; ordinarily (as source), the value should be something which
-;;; can't legally appear at the head of a Lisp source file.
-;;; * The value should not contain any line-terminating characters,
-;;; because they're hard to express portably and because the LOAD
-;;; code might reasonably use READ-LINE to get the value to compare
-;;; against.
-(defparameter sb!c:*fasl-header-string-start-string* "# FASL"
- #!+sb-doc
- "a string which appears at the start of a fasl file header")
-
-(defparameter sb!c:*fasl-header-string-stop-char-code* 255
- #!+sb-doc
- "the code for a character which terminates a fasl file header")
-
-(defvar *load-depth* 0
- #!+sb-doc
- "the current number of recursive loads")
-(declaim (type index *load-depth*))
-
-;;; the FASL file we're reading from
-(defvar *fasl-file*)
-(declaim (type lisp-stream *fasl-file*))
-
-(defvar *load-print* nil
- #!+sb-doc
- "the default for the :PRINT argument to LOAD")
-(defvar *load-verbose* nil
- ;; Note that CMU CL's default for this was T, and ANSI says it's
- ;; implementation-dependent. We choose NIL on the theory that it's
- ;; a nicer default behavior for Unix programs.
- #!+sb-doc
- "the default for the :VERBOSE argument to LOAD")
+(in-package "SB!FASL")
\f
;;;; miscellaneous load utilities
((>= cnt n) res)))
;;; Like Fast-Read-U-Integer, but the size may be determined at run time.
-(defmacro fast-read-variable-u-integer (n)
+(defmacro fast-read-var-u-integer (n)
(let ((n-pos (gensym))
(n-res (gensym))
(n-cnt (gensym)))
(cnt 1 (1+ cnt)))
((>= cnt n) res))))
-;;; Read an N-byte unsigned integer from the *FASL-FILE*
+;;; Read an N-byte unsigned integer from the *FASL-INPUT-STREAM*
(defmacro read-arg (n)
(declare (optimize (speed 0)))
(if (= n 1)
- `(the (unsigned-byte 8) (read-byte *fasl-file*))
- `(prepare-for-fast-read-byte *fasl-file*
+ `(the (unsigned-byte 8) (read-byte *fasl-input-stream*))
+ `(prepare-for-fast-read-byte *fasl-input-stream*
(prog1
(fast-read-u-integer ,n)
(done-with-fast-read-byte)))))
(when byte
;; Read the string part of the fasl header, or die.
- (let* ((fhsss sb!c:*fasl-header-string-start-string*)
+ (let* ((fhsss *fasl-header-string-start-string*)
(fhsss-length (length fhsss)))
(unless (= byte (char-code (schar fhsss 0)))
- (error "illegal fasl file header"))
+ (error "illegal first byte in fasl file header"))
(do ((byte (read-byte stream) (read-byte stream))
(count 1 (1+ count)))
- ((= byte sb!c:*fasl-header-string-stop-char-code*)
+ ((= byte +fasl-header-string-stop-char-code+)
t)
(declare (fixnum byte count))
(when (and (< count fhsss-length)
(not (eql byte (char-code (schar fhsss count)))))
- (error "illegal fasl file header"))))
+ (error
+ "illegal subsequent (not first) byte in fasl file header"))))
;; Read and validate implementation and version, or die.
(let* ((implementation-length (read-arg 4))
needed-version))
t)))
(or (check-version "native code"
- #.sb!c:*backend-fasl-file-implementation*
- #.sb!c:*backend-fasl-file-version*)
- (check-version "byte code"
- #.(sb!c:backend-byte-fasl-file-implementation)
- sb!c:byte-fasl-file-version)
+ +backend-fasl-file-implementation+
+ +fasl-file-version+)
(error "~S was compiled for implementation ~A, but this is a ~A."
stream
implementation
- sb!c:*backend-fasl-file-implementation*)))))))
+ +backend-fasl-file-implementation+)))))))
;; Setting this variable gives you a trace of fops as they are loaded and
;; executed.
(when (zerop (file-length stream))
(error "attempt to load an empty FASL file:~% ~S" (namestring stream)))
(do-load-verbose stream verbose)
- (let* ((*fasl-file* stream)
+ (let* ((*fasl-input-stream* stream)
(*current-fop-table* (or (pop *free-fop-tables*) (make-array 1000)))
(*current-fop-table-size* (length *current-fop-table*))
(*fop-stack-pointer-on-entry* *fop-stack-pointer*))
(fill *fop-stack* nil :end *fop-stack-pointer-on-entry*)
(fill *current-fop-table* nil)))
t)
+
+;;; This is used in in target-load and also genesis, using
+;;; *COLD-FOREIGN-SYMBOL-TABLE*. All the speculative prefix-adding
+;;; code for foreign symbol lookup should be here.
+(defun find-foreign-symbol-in-table (name table)
+ (let ((prefixes
+ #!+(or linux freebsd) #("" "ldso_stub__")
+ #!+openbsd #("" "_")))
+ (some (lambda (prefix)
+ (gethash (concatenate 'string prefix name)
+ table
+ nil))
+ prefixes)))
+
\f
;;;; stuff for debugging/tuning by collecting statistics on FOPs (?)
projects / sbcl.git / blobdiff