X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fearly-fasl.lisp;h=a5b95e688b9a1d4b4c9830eea70bcd6a08060fd6;hb=095564c28a259002c7e34fd1d861f5bbd0a959b6;hp=64a5f681e66938019b461d3b4927dbedc39b5d48;hpb=bee53328c93be3433477821131ab805557476c8b;p=sbcl.git diff --git a/src/code/early-fasl.lisp b/src/code/early-fasl.lisp index 64a5f68..a5b95e6 100644 --- a/src/code/early-fasl.lisp +++ b/src/code/early-fasl.lisp @@ -33,85 +33,113 @@ ;;; against. (defparameter *fasl-header-string-start-string* "# FASL") +(macrolet ((define-fasl-format-features () + (let (;; master value for *F-P-A-F-F* + (fpaff '(:sb-thread :sb-package-locks :sb-unicode))) + `(progn + ;; a list of *(SHEBANG-)FEATURES* flags which affect + ;; binary compatibility, i.e. which must be the same + ;; between the SBCL which compiles the code and the + ;; SBCL which executes the code + ;; + ;; This is a property of SBCL executables in the + ;; abstract, not of this particular SBCL executable, + ;; so any flag in this list may or may not be present + ;; in the *FEATURES* list of this particular build. + (defparameter *features-potentially-affecting-fasl-format* + ',fpaff) + ;; a string representing flags of *F-P-A-F-F* which + ;; are in this particular build + ;; + ;; (A list is the natural logical representation for + ;; this, but we represent it as a string because + ;; that's physically convenient for writing to and + ;; reading from fasl files, and because we don't + ;; need to do anything sophisticated with its + ;; logical structure, just test it for equality.) + (defparameter *features-affecting-fasl-format* + ,(let ((*print-pretty* nil)) + (prin1-to-string + (sort + (copy-seq + (intersection sb-cold:*shebang-features* fpaff)) + #'string< + :key #'symbol-name)))))))) + (define-fasl-format-features)) + ;;; the code for a character which terminates a fasl file header -(defconstant +fasl-header-string-stop-char-code+ 255) - -;;; This value should be incremented when the system changes in such -;;; a way that it will no longer work reliably with old fasl files. -(defconstant +fasl-file-version+ 16) -;;; 2 = sbcl-0.6.4 uses COMPILE-OR-LOAD-DEFGENERIC. -;;; 3 = sbcl-0.6.6 uses private symbol, not :EMPTY, for empty HASH-TABLE slot. -;;; 4 = sbcl-0.6.7 uses HAIRY-DATA-VECTOR-REF and HAIRY-DATA-VECTOR-SET -;;; when array headers or data element type uncertainty exist, and -;;; uses DATA-VECTOR-REF and DATA-VECTOR-SET only for VOPs. (Thus, -;;; full calls to DATA-VECTOR-REF and DATA-VECTOR-SET from older -;;; fasl files would fail, because there are no DEFUNs for these -;;; operations any more.) -;;; 5 = sbcl-0.6.8 has rearranged static symbols. -;;; 6 = sbcl-0.6.9, got rid of non-ANSI %DEFCONSTANT/%%DEFCONSTANT stuff -;;; and deleted a slot from DEBUG-SOURCE structure. -;;; 7 = around sbcl-0.6.9.8, merged SB-CONDITIONS package into SB-KERNEL -;;; 8 = sbcl-0.6.10.4 revived Gray stream support, changing stream layouts. -;;; 9 = deleted obsolete CONS-UNIQUE-TAG bytecode in sbcl-0.6.11.8 -;;; (somewhere in here also changes to AND and OR CTYPE layouts) -;;; 10 = new layout for CONDITION in sbcl-0.6.11.38 -;;; 11 = (a) new helper functions for MAKE-LOAD-FORM (HASH-TABLE) in -;;; sbcl-0.6.12.11 -;;; (b) new address space constants for OpenBSD in 0.6.12.17 -;;; (doesn't need separate version from (a) because the -;;; OpenBSD port was broken from sometime before 0.6.12.11 -;;; until the address space was changed) -;;; 12 = sbcl-0.6.12.22 added new SB-FASL package -;;; 13 = sbcl-0.6.12.28 removed some elements from *STATIC-SYMBOLS* -;;; 14 = sbcl-0.6.12.29 removed more elements from *STATIC-SYMBOLS* -;;; 15 = sbcl-0.6.12.33 changed the layout of STREAM -;;; 16 = sbcl-0.pre7.15 changed the layout of PRETTY-STREAM +(def!constant +fasl-header-string-stop-char-code+ 255) + +;;; This value should be incremented when the system changes in such a +;;; way that it will no longer work reliably with old fasl files. In +;;; practice, I (WHN) have often forgotten to increment it for CVS +;;; versions which break binary compatibility. But it certainly should +;;; be incremented for release versions which break binary +;;; compatibility. +(def!constant +fasl-file-version+ 52) +;;; (record of versions before 2003 deleted in 2003-04-26/0.pre8.107 or so) +;;; 38: (2003-01-05) changed names of internal SORT machinery +;;; 39: (2003-02-20) in 0.7.12.1 a slot was added to +;;; DEFSTRUCT-SLOT-DESCRIPTION +;;; 40: (2003-03-11) changed value of (SXHASH NIL) +;;; 41: (2003-04-26) enforced binary incompatibility between +SB-THREAD +;;; and -SB-THREAD builds +;;; 42: (2003-05-22) %NAME slot changed to NAME in +;;; DEFSTRUCT-SLOT-DESCRIPTION +;;; 43: (2003-07-18) Something could easily have changed incompatibly in +;;; recent maintenance, e.g. from (VECTOR NIL)-as-string support. +;;; (And experimental results suggest that compatibility was broken +;;; between about 0.8.1.29 and 0.8.1.39.) +;;; 44: (2003-08-25) various changes leading up to 0.8.3 +;;; what happened this month to stalate the fasls? +;;; I think I renumbered everything again +;;; simple-array-unsigned-byte-7, probably +;;; (thanks to pfdietz) +;;; 45: (2003-10-02) I (WHN) incremented the version for the 0.8.4 +;;; release because I couldn't immediately convince myself that +;;; .fasl files could never possibly ever refer to the SB-C +;;; CONTINUATION-related data types which were changed +;;; incompatibly in 0.8.3.62. +;;; 46: (2003-11-11) Tim Daly, Jr. (and Christophe Rhodes) reported +;;; .fasl incompatibility on sbcl-devel 2003-11-09. +;;; 47: (2003-11-30) Static variables were rearranged in 0.8.6.11. +;;; 48: (2004-03-01) Renumbered all the widetags to allow for more +;;; microefficiency in sbcl-0.8.8.10 +;;; 49: (2004-05-04) Changed implementation of DEFFOO macros and the +;;; functions they expand to. +;;; 50: (2004-05-20) Changed %COMPILER-DEFUN signature again. +;;; 51: (2004-07-24) Package locks (SBCL 0.8.12.7) changed signature of +;;; %DEFPACKAGE. +;;; 52: (2004-11-02) Merge of SB-UNICODE. ;;; the conventional file extension for our fasl files (declaim (type simple-string *fasl-file-type*)) (defvar *fasl-file-type* "fasl") - -;;; This is a sort of pun that we inherited from CMU CL. For ordinary, -;;; non-byte-coded fasl files, the "implementation" is basically the -;;; CPU. For byte-coded fasl files, the "implementation" is whether -;;; the data are stored big-endianly or little-endianly. -(defun backend-byte-fasl-file-implementation () - *backend-byte-order*) -;;; information about below-Lisp-level linkage -;;; +;;;; information about below-Lisp-level linkage + ;;; Note: ;;; Assembler routines are named by full Lisp symbols: they ;;; have packages and that sort of native Lisp stuff associated ;;; with them. We can compare them with EQ. -;;; Foreign symbols are named by Lisp strings: the Lisp package -;;; system doesn't extend out to symbols in languages like C. -;;; We want to use EQUAL to compare them. -;;; *STATIC-FOREIGN-SYMBOLS* are static as opposed to "dynamic" (not -;;; as opposed to "extern"). The table contains symbols known at -;;; the time that the program was built, but not symbols defined -;;; in object files which have been loaded dynamically since then. -(declaim (type hash-table *assembler-routines* *static-foreign-symbols*)) +(declaim (type hash-table *assembler-routines*)) (defvar *assembler-routines* (make-hash-table :test 'eq)) -(defvar *static-foreign-symbols* (make-hash-table :test 'equal)) + ;;;; the FOP database -(declaim (simple-vector *fop-names* *fop-functions*)) +(declaim (simple-vector *fop-names* *fop-funs*)) ;;; a vector indexed by a FaslOP that yields the FOP's name (defvar *fop-names* (make-array 256 :initial-element nil)) ;;; a vector indexed by a FaslOP that yields a function of 0 arguments ;;; which will perform the operation -(defvar *fop-functions* +(defvar *fop-funs* (make-array 256 :initial-element (lambda () (error "corrupt fasl file: losing FOP")))) -;;;; other miscellaneous loading-related stuff - - ;;;; variables (defvar *load-depth* 0 @@ -121,17 +149,6 @@ ;;; the FASL file we're reading from (defvar *fasl-input-stream*) -(declaim (type lisp-stream *fasl-input-stream*)) - -(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") +(declaim (type ansi-stream *fasl-input-stream*)) (defvar *load-code-verbose* nil) -