X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftarget-load.lisp;h=48a96c45370fa1588d2182b3ee096587b84c3a57;hb=8fa3b333d2b37f45c3702f478f784b8c6f491080;hp=c928da9c86c64466c3829e38865085bc7d710f64;hpb=02ce4b1b927f1312c300047bd5a0db6663a1d2c6;p=sbcl.git diff --git a/src/code/target-load.lisp b/src/code/target-load.lisp index c928da9..48a96c4 100644 --- a/src/code/target-load.lisp +++ b/src/code/target-load.lisp @@ -11,36 +11,25 @@ ;;;; provided with absolutely no warranty. See the COPYING and CREDITS ;;;; files for more information. -(in-package "SB!IMPL") +(in-package "SB!FASL") -(defvar *load-source-types* '("lisp" "l" "cl" "lsp") +(defvar *load-source-default-type* "lisp" #!+sb-doc - "The source file types which LOAD recognizes.") - -(defvar *load-object-types* - '(#.sb!c:*backend-fasl-file-type* - #.(sb!c:backend-byte-fasl-file-type) - "fasl") - #!+sb-doc - "A list of the object file types recognized by LOAD.") - -(declaim (list *load-source-types* *load-object-types*)) + "The source file types which LOAD looks for by default.") +(declaim (type (or pathname null) *load-truename* *load-pathname*)) (defvar *load-truename* nil #!+sb-doc "the TRUENAME of the file that LOAD is currently loading") - (defvar *load-pathname* nil #!+sb-doc "the defaulted pathname that LOAD is currently loading") - -(declaim (type (or pathname null) *load-truename* *load-pathname*)) -;;;; SLOLOAD +;;;; LOAD-AS-SOURCE ;;; Load a text file. -(defun sloload (stream verbose print) - (do-load-verbose stream verbose) +(defun load-as-source (stream verbose print) + (maybe-announce-load stream verbose) (do ((sexpr (read stream nil *eof-object*) (read stream nil *eof-object*))) ((eq sexpr *eof-object*) @@ -49,7 +38,7 @@ (let ((results (multiple-value-list (eval sexpr)))) (load-fresh-line) (format t "~{~S~^, ~}~%" results)) - (eval sexpr)))) + (eval sexpr)))) ;;;; LOAD itself @@ -72,60 +61,52 @@ (with-open-file (stream truename :direction :input :if-does-not-exist if-does-not-exist) - (sloload stream verbose print))) + (load-as-source stream verbose print))) (:binary (with-open-file (stream truename :direction :input :if-does-not-exist if-does-not-exist :element-type '(unsigned-byte 8)) - (fasload stream verbose print))) + (load-as-fasl stream verbose print))) (t (let ((first-line (with-open-file (stream truename :direction :input) (read-line stream nil))) - (fhs sb!c:*fasl-header-string-start-string*)) + (fhsss *fasl-header-string-start-string*)) (cond ((and first-line (>= (length (the simple-string first-line)) - (length fhs)) - (string= first-line fhs :end1 (length fhs))) + (length fhsss)) + (string= first-line fhsss :end1 (length fhsss))) (internal-load pathname truename if-does-not-exist verbose print :binary)) (t - (when (member (pathname-type truename) - *load-object-types* - :test #'string=) + (when (string= (pathname-type truename) *fasl-file-type*) (error "File has a fasl file type, but no fasl file header:~% ~S" (namestring truename))) (internal-load pathname truename if-does-not-exist verbose print :source)))))))) -;;; a helper function for INTERNAL-LOAD-DEFAULT-TYPE -(defun try-default-types (pathname types lp-type) - ;; Modified 18-Jan-97/pw for logical-pathname support. - ;; - ;; FIXME: How does logical-pathname support interact with - ;; *LOAD-SOURCE-TYPES* and *LOAD-OBJECT-TYPES*? - (flet ((frob (pathname type) - (let* ((pn (make-pathname :type type :defaults pathname)) - (tn (probe-file pn))) - (values pn tn)))) - (if (typep pathname 'logical-pathname) - (frob pathname lp-type) - (dolist (type types (values nil nil)) - (multiple-value-bind (pn tn) (frob pathname type) - (when tn - (return (values pn tn)))))))) +;;; a helper function for INTERNAL-LOAD-DEFAULT-TYPE: Try the default +;;; file type TYPE and return (VALUES PATHNAME TRUENAME) for a match, +;;; or (VALUES PATHNAME NIL) if the file doesn't exist. +;;; +;;; This is analogous to CMU CL's TRY-DEFAULT-TYPES, but we only try a +;;; single type. By avoiding CMU CL's generality here, we avoid having +;;; to worry about some annoying ambiguities. (E.g. what if the +;;; possible types are ".lisp" and ".cl", and both "foo.lisp" and +;;; "foo.cl" exist?) +(defun try-default-type (pathname type) + (let ((pn (make-pathname :type type :defaults pathname))) + (values pn (probe-file pn)))) -;;; a helper function for LOAD: Handle the case of INTERNAL-LOAD where the file -;;; does not exist. +;;; a helper function for LOAD: Handle the case of INTERNAL-LOAD where +;;; the file does not exist. (defun internal-load-default-type (pathname if-does-not-exist verbose print) (declare (type (member nil :error) if-does-not-exist)) - ;; FIXME: How do the fixed "LISP" and "FASL" types interact with the - ;; *LOAD-SOURCE-TYPES* and *LOAD-OBJECT-TYPES* values? (multiple-value-bind (src-pn src-tn) - (try-default-types pathname *load-source-types* "LISP") + (try-default-type pathname *load-source-default-type*) (multiple-value-bind (obj-pn obj-tn) - (try-default-types pathname *load-object-types* "FASL") + (try-default-type pathname *fasl-file-type*) (cond ((and obj-tn src-tn @@ -152,12 +133,11 @@ (t (internal-load pathname nil if-does-not-exist verbose print nil)))))) -;;; This function mainly sets up special bindings and then calls sub-functions. -;;; We conditionally bind the switches with PROGV so that people can set them -;;; in their init files and have the values take effect. If the compiler is -;;; loaded, we make the compiler-policy local to LOAD by binding it to itself. -;;; -;;; FIXME: ANSI specifies an EXTERNAL-FORMAT keyword argument. +;;; This function mainly sets up special bindings and then calls +;;; sub-functions. We conditionally bind the switches with PROGV so +;;; that people can set them in their init files and have the values +;;; take effect. If the compiler is loaded, we make the +;;; compiler-policy local to LOAD by binding it to itself. ;;; ;;; FIXME: Daniel Barlow's ilsb.tar ILISP-for-SBCL patches contain an ;;; implementation of "DEFUN SOURCE-FILE" which claims, in a comment, that CMU @@ -167,68 +147,65 @@ &key (verbose *load-verbose*) (print *load-print*) - (if-does-not-exist t)) + (if-does-not-exist t) + (external-format :default)) #!+sb-doc - "Loads the file given by FILESPEC into the Lisp environment, returning - T on success. These options are defined: - - :IF-DOES-NOT-EXIST - What should we do if the file can't be located? If true (the - default), signal an error. If NIL, simply return NIL. - - :VERBOSE - If true, print a line describing each file loaded. The default - is *LOAD-VERBOSE*. - - :PRINT - If true, print information about loaded values. When loading the - source, the result of evaluating each top-level form is printed. - The default is *LOAD-PRINT*." + "Load the file given by FILESPEC into the Lisp environment, returning + T on success." + (unless (eq external-format :default) + (error "Non-:DEFAULT EXTERNAL-FORMAT values are not supported.")) - (let ((sb!c::*default-cookie* sb!c::*default-cookie*) - (sb!c::*default-interface-cookie* sb!c::*default-interface-cookie*) + (let ((*load-depth* (1+ *load-depth*)) + ;; KLUDGE: I can't find in the ANSI spec where it says that + ;; DECLAIM/PROCLAIM of optimization policy should have file + ;; scope. CMU CL did this, and it seems reasonable, but it + ;; might not be right; after all, things like (PROCLAIM '(TYPE + ;; ..)) don't have file scope, and I can't find anything under + ;; PROCLAIM or COMPILE-FILE or LOAD or OPTIMIZE which + ;; justifies this behavior. Hmm. -- WHN 2001-04-06 + (sb!c::*policy* sb!c::*policy*) + ;; The ANSI spec for LOAD says "LOAD binds *READTABLE* and + ;; *PACKAGE* to the values they held before loading the file." (*package* (sane-package)) (*readtable* *readtable*) - (*load-depth* (1+ *load-depth*)) - ;; The old CMU CL LOAD function used an IF-DOES-NOT-EXIST argument of - ;; (MEMBER :ERROR NIL) type. ANSI constrains us to accept a generalized - ;; boolean argument value for this externally-visible function, but the - ;; internal functions still use the old convention. + ;; The old CMU CL LOAD function used an IF-DOES-NOT-EXIST + ;; argument of (MEMBER :ERROR NIL) type. ANSI constrains us to + ;; accept a generalized boolean argument value for this + ;; externally-visible function, but the internal functions + ;; still use the old convention. (internal-if-does-not-exist (if if-does-not-exist :error nil))) - ;; FIXME: This VALUES wrapper is inherited from CMU CL. - ;; Once SBCL gets function return type checking right, we can - ;; achieve a similar effect better by adding FTYPE declarations. + ;; FIXME: This VALUES wrapper is inherited from CMU CL. Once SBCL + ;; gets function return type checking right, we can achieve a + ;; similar effect better by adding FTYPE declarations. (values (if (streamp filespec) (if (or (equal (stream-element-type filespec) '(unsigned-byte 8))) - (fasload filespec verbose print) - (sloload filespec verbose print)) - (let ((pn (merge-pathnames (pathname filespec) - *default-pathname-defaults*))) - (if (wild-pathname-p pn) - (let ((files (directory pn))) - #!+high-security - (when (null files) - (error 'file-error :pathname filespec)) - (dolist (file files t) - (internal-load pn - file - internal-if-does-not-exist - verbose - print))) - (let ((tn (probe-file pn))) - (if (or tn (pathname-type pn)) - (internal-load pn - tn - internal-if-does-not-exist - verbose - print) - (internal-load-default-type - pn - internal-if-does-not-exist - verbose - print))))))))) + (load-as-fasl filespec verbose print) + (load-as-source filespec verbose print)) + (let* (;; FIXME: MERGE-PATHNAMES doesn't work here for + ;; FILESPEC="TEST:Load-Test" and + ;; (LOGICAL-PATHNAME-TRANSLATIONS "TEST") + ;; = (("**;*.*.*" "/foo/bar/**/*.*")). + ;; Physicalizing the pathname before merging + ;; is a workaround, but the ANSI spec talks about + ;; MERGE-PATHNAMES accepting (and returning) + ;; logical pathnames, so a true fix would probably + ;; include fixing MERGE-PATHNAMES, then probably + ;; revisiting this code. + (ppn (physicalize-pathname (pathname filespec))) + (unix-name (unix-namestring ppn t))) + (if (or unix-name (pathname-type ppn)) + (internal-load ppn + unix-name + internal-if-does-not-exist + verbose + print) + (internal-load-default-type + ppn + internal-if-does-not-exist + verbose + print))))))) ;;; Load a code object. BOX-NUM objects are popped off the stack for ;;; the boxed storage section, then SIZE bytes of code are read in. @@ -237,22 +214,27 @@ (declare (fixnum box-num code-length)) (with-fop-stack t (let ((code (%primitive sb!c:allocate-code-object box-num code-length)) - (index (+ #!-gengc sb!vm:code-trace-table-offset-slot - #!+gengc sb!vm:code-debug-info-slot - box-num))) + (index (+ sb!vm:code-trace-table-offset-slot box-num))) (declare (type index index)) - #!-gengc (setf (%code-debug-info code) (pop-stack)) + (setf (%code-debug-info code) (pop-stack)) (dotimes (i box-num) (declare (fixnum i)) (setf (code-header-ref code (decf index)) (pop-stack))) (sb!sys:without-gcing - (read-n-bytes *fasl-file* + (read-n-bytes *fasl-input-stream* (code-instructions code) 0 - #!-gengc code-length - #!+gengc (* code-length sb!vm:word-bytes))) + code-length)) code))) +;;; Moving native code during a GC or purify is not so trivial on the +;;; x86 port. +;;; +;;; Our strategy for allowing the loading of x86 native code into the +;;; dynamic heap requires that the addresses of fixups be saved for +;;; all these code objects. After a purify these fixups can be +;;; dropped. In CMU CL, this policy was enabled with +;;; *ENABLE-DYNAMIC-SPACE-CODE*; in SBCL it's always used. #!+x86 (defun load-code (box-num code-length) (declare (fixnum box-num code-length)) @@ -263,29 +245,15 @@ (push (pop-stack) stuff)) (let* ((dbi (car (last stuff))) ; debug-info (tto (first stuff)) ; trace-table-offset - (load-to-dynamic-space - (or *enable-dynamic-space-code* - ;; definitely byte-compiled code? - (and *load-byte-compiled-code-to-dynamic-space* - (sb!c::debug-info-p dbi) - (not (sb!c::compiled-debug-info-p dbi))) - ;; or a x86 top level form? - (and *load-x86-tlf-to-dynamic-space* - (sb!c::compiled-debug-info-p dbi) - (string= (sb!c::compiled-debug-info-name dbi) - "top-level form")))) ) + ;; Old CMU CL code had maybe-we-shouldn't-load-to-dyn-space + ;; pussyfooting around here, apparently dating back to the + ;; stone age of the X86 port, but in SBCL we always load + ;; to dynamic space. FIXME: So now this "variable" could go + ;; away entirely. + (load-to-dynamic-space t)) (setq stuff (nreverse stuff)) - ;; Check that tto is always a list for byte-compiled - ;; code. Could be used an alternate check. - (when (and (typep tto 'list) - (not (and (sb!c::debug-info-p dbi) - (not (sb!c::compiled-debug-info-p dbi))))) - ;; FIXME: What is this for? - (format t "* tto list on non-bc code: ~S~% ~S ~S~%" - stuff dbi tto)) - ;; FIXME: *LOAD-CODE-VERBOSE* should probably be #!+SB-SHOW. (when *load-code-verbose* (format t "stuff: ~S~%" stuff) @@ -318,7 +286,10 @@ (declare (fixnum i)) (setf (code-header-ref code (decf index)) (pop stuff))) (sb!sys:without-gcing - (read-n-bytes *fasl-file* (code-instructions code) 0 code-length)) + (read-n-bytes *fasl-input-stream* + (code-instructions code) + 0 + code-length)) code))))) ;;;; linkage fixups @@ -332,17 +303,17 @@ (dolist (symbol *!initial-foreign-symbols*) (setf (gethash (car symbol) *static-foreign-symbols*) (cdr symbol)))) -(declaim (ftype (function (string) sb!vm:word) foreign-symbol-address-as-integer)) +(declaim (ftype (function (string) sb!vm:word) + foreign-symbol-address-as-integer)) + + +;;; SB!SYS:GET-DYNAMIC-FOREIGN-SYMBOL-ADDRESS is in foreign.lisp, on +;;; platforms that have dynamic loading (defun foreign-symbol-address-as-integer (foreign-symbol) - (or (gethash foreign-symbol *static-foreign-symbols*) - (gethash (concatenate 'simple-string - #!+linux "ldso_stub__" - #!+openbsd "_" - #!+freebsd "ldso_stub__" - foreign-symbol) - *static-foreign-symbols*) + (or (find-foreign-symbol-in-table foreign-symbol *static-foreign-symbols*) (sb!sys:get-dynamic-foreign-symbol-address foreign-symbol) (error "unknown foreign symbol: ~S" foreign-symbol))) (defun foreign-symbol-address (symbol) - (int-sap (foreign-symbol-address-as-integer (sb!vm:extern-alien-name symbol)))) + (int-sap (foreign-symbol-address-as-integer + (sb!vm:extern-alien-name symbol))))