;;;; files for more information.
(in-package "SB!IMPL")
-
-(file-comment
- "$Header$")
\f
;;;; burning our ships behind us
;;; which might be tedious to maintain, instead we use a hack:
;;; anything whose name matches a magic character pattern is
;;; uninterned.
+;;;
+;;; FIXME: Are there other tables that need to have entries removed?
+;;; What about symbols of the form DEF!FOO?
(defun !unintern-init-only-stuff ()
(do ((any-changes? nil nil))
(nil)
(dolist (package (list-all-packages))
(do-symbols (symbol package)
- (let ((name (symbol-name symbol)))
- (when (or (string= name "!" :end1 1 :end2 1)
- (and (>= (length name) 2)
- (string= name "*!" :end1 2 :end2 2)))
- (/show0 "uninterning cold-init-only symbol..")
- #!+sb-show (%primitive print name)
- (unintern symbol package)
- (setf any-changes? t)))))
+ (let ((name (symbol-name symbol)))
+ (when (or (string= name "!" :end1 1 :end2 1)
+ (and (>= (length name) 2)
+ (string= name "*!" :end1 2 :end2 2)))
+ (/show0 "uninterning cold-init-only symbol..")
+ (/primitive-print name)
+ ;; FIXME: Is this (FIRST (LAST *INFO-ENVIRONMENT*)) really
+ ;; meant to be an idiom to use? Is there a more obvious
+ ;; name for this? [e.g. (GLOBAL-ENVIRONMENT)?]
+ (do-info ((first (last *info-environment*))
+ :name entry :class class :type type)
+ (when (eq entry symbol)
+ (clear-info class type entry)))
+ (unintern symbol package)
+ (setf any-changes? t)))))
(unless any-changes?
(return))))
\f
+;;;; putting ourselves out of our misery when things become too much to bear
+
+(declaim (ftype (function (simple-string) nil) !cold-lose))
+(defun !cold-lose (msg)
+ (%primitive print msg)
+ (%primitive print "too early in cold init to recover from errors")
+ (%halt))
+
+;;; last-ditch error reporting for things which should never happen
+;;; and which, if they do happen, are sufficiently likely to torpedo
+;;; the normal error-handling system that we want to bypass it
+(declaim (ftype (function (simple-string) nil) critically-unreachable))
+(defun critically-unreachable (where)
+ (%primitive print "internal error: Control should never reach here, i.e.")
+ (%primitive print where)
+ (%halt))
+\f
;;;; !COLD-INIT
;;; a list of toplevel things set by GENESIS
(defvar *!reversed-cold-toplevels*)
-;;; a SIMPLE-VECTOR set by genesis
+;;; a SIMPLE-VECTOR set by GENESIS
(defvar *!load-time-values*)
-#!+gengc
-(defun do-load-time-value-fixup (object offset index)
- (declare (type index offset))
- (macrolet ((lose (msg)
- `(progn
- (%primitive print ,msg)
- (%halt))))
- (let ((value (svref *!load-time-values* index)))
- (typecase object
- (list
- (case offset
- (0 (setf (car object) value))
- (1 (setf (cdr object) value))
- (t (lose "bogus offset in cons cell"))))
- (instance
- (setf (%instance-ref object (- offset sb!vm:instance-slots-offset))
- value))
- (code-component
- (setf (code-header-ref object offset) value))
- (simple-vector
- (setf (svref object (- offset sb!vm:vector-data-offset)) value))
- (t
- (lose "unknown kind of object for load-time-value fixup"))))))
-
(eval-when (:compile-toplevel :execute)
;; FIXME: Perhaps we should make SHOW-AND-CALL-AND-FMAKUNBOUND, too,
;; and use it for most of the cold-init functions. (Just be careful
;; not to use it for the COLD-INIT-OR-REINIT functions.)
(sb!xc:defmacro show-and-call (name)
`(progn
- #!+sb-show (%primitive print ,(symbol-name name))
+ (/primitive-print ,(symbol-name name))
(,name))))
;;; called when a cold system starts up
(/show0 "entering !COLD-INIT")
;; FIXME: It'd probably be cleaner to have most of the stuff here
- ;; handled by calls a la !GC-COLD-INIT, !ERROR-COLD-INIT, and
+ ;; handled by calls like !GC-COLD-INIT, !ERROR-COLD-INIT, and
;; !UNIX-COLD-INIT. And *TYPE-SYSTEM-INITIALIZED* could be changed to
;; *TYPE-SYSTEM-INITIALIZED-WHEN-BOUND* so that it doesn't need to
;; be explicitly set in order to be meaningful.
- (setf *gc-verbose* nil)
- (setf *gc-notify-stream* nil)
- (setf *before-gc-hooks* nil)
- (setf *after-gc-hooks* nil)
- #!+gengc (setf sb!conditions::*handler-clusters* nil)
- #!-gengc (setf *already-maybe-gcing* t
- *gc-inhibit* t
- *need-to-collect-garbage* nil
- sb!unix::*interrupts-enabled* t
- sb!unix::*interrupt-pending* nil)
- (setf *break-on-signals* nil)
- (setf *maximum-error-depth* 10)
- (setf *current-error-depth* 0)
- (setf *cold-init-complete-p* nil)
- (setf *type-system-initialized* nil)
+ (setf *after-gc-hooks* nil
+ *gc-inhibit* 1
+ *need-to-collect-garbage* nil
+ sb!unix::*interrupts-enabled* t
+ sb!unix::*interrupt-pending* nil
+ *break-on-signals* nil
+ *maximum-error-depth* 10
+ *current-error-depth* 0
+ *cold-init-complete-p* nil
+ *type-system-initialized* nil)
+
+ (show-and-call !typecheckfuns-cold-init)
;; Anyone might call RANDOM to initialize a hash value or something;
;; and there's nothing which needs to be initialized in order for
;; this to be initialized, so we initialize it right away.
(show-and-call !random-cold-init)
+ (show-and-call !character-database-cold-init)
+
+ (show-and-call !early-package-cold-init)
+ (show-and-call !package-cold-init)
+
;; All sorts of things need INFO and/or (SETF INFO).
+ (/show0 "about to SHOW-AND-CALL !GLOBALDB-COLD-INIT")
(show-and-call !globaldb-cold-init)
;; This needs to be done early, but needs to be after INFO is
;; initialized.
+ (show-and-call !function-names-cold-init)
(show-and-call !fdefn-cold-init)
;; Various toplevel forms call MAKE-ARRAY, which calls SUBTYPEP, so
;; functions are called in the same relative order as the toplevel
;; forms of the corresponding source files.
- (show-and-call !package-cold-init)
+ ;;(show-and-call !package-cold-init)
+ (show-and-call !policy-cold-init-or-resanify)
+ (/show0 "back from !POLICY-COLD-INIT-OR-RESANIFY")
- ;; Set sane values for our toplevel forms.
- (show-and-call !set-sane-cookie-defaults)
+ (show-and-call !early-proclaim-cold-init)
;; KLUDGE: Why are fixups mixed up with toplevel forms? Couldn't
;; fixups be done separately? Wouldn't that be clearer and better?
;; -- WHN 19991204
(/show0 "doing cold toplevel forms and fixups")
+ (/show0 "(LISTP *!REVERSED-COLD-TOPLEVELS*)=..")
+ (/hexstr (if (listp *!reversed-cold-toplevels*) "true" "NIL"))
+ (/show0 "about to calculate (LENGTH *!REVERSED-COLD-TOPLEVELS*)")
(/show0 "(LENGTH *!REVERSED-COLD-TOPLEVELS*)=..")
- #!+sb-show (%primitive print
- (sb!impl::hexstr (length *!reversed-cold-toplevels*)))
- (let (#!+sb-show (index-in-cold-toplevels 0)
- #!+sb-show (filename-in-cold-toplevels nil))
+ #!+sb-show (let ((r-c-tl-length (length *!reversed-cold-toplevels*)))
+ (/show0 "(length calculated..)")
+ (let ((hexstr (hexstr r-c-tl-length)))
+ (/show0 "(hexstr calculated..)")
+ (/primitive-print hexstr)))
+ (let (#!+sb-show (index-in-cold-toplevels 0))
#!+sb-show (declare (type fixnum index-in-cold-toplevels))
+
(dolist (toplevel-thing (prog1
- (nreverse *!reversed-cold-toplevels*)
- ;; (Now that we've NREVERSEd it, it's
- ;; somewhat scrambled, so keep anyone
- ;; else from trying to get at it.)
- (makunbound '*!reversed-cold-toplevels*)))
+ (nreverse *!reversed-cold-toplevels*)
+ ;; (Now that we've NREVERSEd it, it's
+ ;; somewhat scrambled, so keep anyone
+ ;; else from trying to get at it.)
+ (makunbound '*!reversed-cold-toplevels*)))
#!+sb-show
(when (zerop (mod index-in-cold-toplevels 1024))
- (/show0 "INDEX-IN-COLD-TOPLEVELS=..")
- (%primitive print (sb!impl::hexstr index-in-cold-toplevels)))
+ (/show0 "INDEX-IN-COLD-TOPLEVELS=..")
+ (/hexstr index-in-cold-toplevels))
#!+sb-show
(setf index-in-cold-toplevels
- (the fixnum (1+ index-in-cold-toplevels)))
+ (the fixnum (1+ index-in-cold-toplevels)))
(typecase toplevel-thing
- (function
- (funcall toplevel-thing))
- (cons
- (case (first toplevel-thing)
- (:load-time-value
- (setf (svref *!load-time-values* (third toplevel-thing))
- (funcall (second toplevel-thing))))
- (:load-time-value-fixup
- #!-gengc
- (setf (sap-ref-32 (second toplevel-thing) 0)
- (get-lisp-obj-address
- (svref *!load-time-values* (third toplevel-thing))))
- #!+gengc
- (do-load-time-value-fixup (second toplevel-thing)
- (third toplevel-thing)
- (fourth toplevel-thing)))
- #!+(and x86 gencgc)
- (:load-time-code-fixup
- (sb!vm::do-load-time-code-fixup (second toplevel-thing)
- (third toplevel-thing)
- (fourth toplevel-thing)
- (fifth toplevel-thing)))
- (t
- (%primitive print
- "bogus fixup code in *!REVERSED-COLD-TOPLEVELS*")
- (%halt))))
- (t
- (%primitive print "bogus function in *!REVERSED-COLD-TOPLEVELS*")
- (%halt)))))
+ (function
+ (funcall toplevel-thing))
+ (cons
+ (case (first toplevel-thing)
+ (:load-time-value
+ (setf (svref *!load-time-values* (third toplevel-thing))
+ (funcall (second toplevel-thing))))
+ (:load-time-value-fixup
+ (setf (sap-ref-word (second toplevel-thing) 0)
+ (get-lisp-obj-address
+ (svref *!load-time-values* (third toplevel-thing)))))
+ #!+(and (or x86 x86-64) gencgc)
+ (:load-time-code-fixup
+ (sb!vm::!envector-load-time-code-fixup (second toplevel-thing)
+ (third toplevel-thing)
+ (fourth toplevel-thing)
+ (fifth toplevel-thing)))
+ (t
+ (!cold-lose "bogus fixup code in *!REVERSED-COLD-TOPLEVELS*"))))
+ (t (!cold-lose "bogus function in *!REVERSED-COLD-TOPLEVELS*")))))
(/show0 "done with loop over cold toplevel forms and fixups")
- ;; Set sane values again, so that the user sees sane values instead of
- ;; whatever is left over from the last DECLAIM.
- (show-and-call !set-sane-cookie-defaults)
+ ;; Set sane values again, so that the user sees sane values instead
+ ;; of whatever is left over from the last DECLAIM/PROCLAIM.
+ (show-and-call !policy-cold-init-or-resanify)
- ;; Only do this after top level forms have run, 'cause that's where
+ ;; Only do this after toplevel forms have run, 'cause that's where
;; DEFTYPEs are.
(setf *type-system-initialized* t)
+ ;; now that the type system is definitely initialized, fixup UNKNOWN
+ ;; types that have crept in.
+ (show-and-call !fixup-type-cold-init)
+ ;; run the PROCLAIMs.
+ (show-and-call !late-proclaim-cold-init)
+
(show-and-call os-cold-init-or-reinit)
- (show-and-call !filesys-cold-init)
+ (show-and-call thread-init-or-reinit)
(show-and-call stream-cold-init-or-reset)
(show-and-call !loader-cold-init)
+ (show-and-call !foreign-cold-init)
(show-and-call signal-cold-init-or-reinit)
+ (/show0 "enabling internal errors")
(setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
;; FIXME: This list of modes should be defined in one place and
;; explicitly shared between here and REINIT.
- (set-floating-point-modes :traps '(:overflow
- #!-x86 :underflow
- :invalid
- :divide-by-zero))
+
+ ;; FIXME: For some unknown reason, NetBSD/x86 won't run with the
+ ;; :invalid trap enabled. That should be fixed, but not today...
+ ;; PEM -- April 5, 2004
+ (set-floating-point-modes
+ :traps '(:overflow #!-netbsd :invalid :divide-by-zero))
(show-and-call !class-finalize)
;; The reader and printer are initialized very late, so that they
- ;; can even do hairy things like invoking the compiler as part of
- ;; their initialization.
+ ;; can do hairy things like invoking the compiler as part of their
+ ;; initialization.
(show-and-call !reader-cold-init)
(let ((*readtable* *standard-readtable*))
(show-and-call !sharpm-cold-init)
;; the ANSI-specified initial value of *PACKAGE*
(setf *package* (find-package "COMMON-LISP-USER"))
- ;; FIXME: I'm not sure where it should be done, but CL-USER really
- ;; ought to USE-PACKAGE publicly accessible packages like SB-DEBUG
- ;; (for ARG and VAR), SB-EXT, SB-EXT-C-CALL, and SB-EXT-ALIEN so
- ;; that the user has a hint about which symbols we consider public.
- ;; (Perhaps SB-DEBUG wouldn't need to be in the list if ARG and VAR
- ;; could be typed directly, with no parentheses, at the debug prompt
- ;; the way that e.g. F or BACKTRACE can be?)
-
- (/show0 "done initializing")
- (setf *cold-init-complete-p* t)
- ;; Unintern no-longer-needed stuff before we GC.
- #!-sb-fluid
- (!unintern-init-only-stuff)
+ (/show0 "done initializing, setting *COLD-INIT-COMPLETE-P*")
+ (setf *cold-init-complete-p* t)
;; The system is finally ready for GC.
- #!-gengc (setf *already-maybe-gcing* nil)
(/show0 "enabling GC")
(gc-on)
(/show0 "doing first GC")
;; The show is on.
(terpri)
(/show0 "going into toplevel loop")
- (let ((wot (catch '%end-of-the-world
- (/show0 "inside CATCH '%END-OF-THE-WORLD")
- (toplevel))))
- (flush-standard-output-streams)
- (sb!unix:unix-exit wot)))
-
-(defun quit (&key recklessly-p
- (unix-code 0 unix-code-p)
- (unix-status unix-code))
+ (handling-end-of-the-world
+ (toplevel-init)
+ (critically-unreachable "after TOPLEVEL-INIT")))
+
+(defun quit (&key recklessly-p (unix-status 0))
#!+sb-doc
- "Terminate the current Lisp. Things are cleaned up (with UNWIND-PROTECT
- and so forth) unless RECKLESSLY-P is non-NIL. On UNIX-like systems,
- UNIX-STATUS is used as the status code."
- (declare (type (signed-byte 32) unix-code))
- ;; TO DO: UNIX-CODE was deprecated in sbcl-0.6.8, after having been
- ;; around for less than a year. It should be safe to remove it after
- ;; a year.
- (when unix-code-p
- (warn "The UNIX-CODE argument is deprecated. Use the UNIX-STATUS argument
-instead (which is another name for the same thing)."))
+ "Terminate the current Lisp. Things are cleaned up (with
+UNWIND-PROTECT and so forth) unless RECKLESSLY-P is non-NIL. On
+UNIX-like systems, UNIX-STATUS is used as the status code."
+ (declare (type (signed-byte 32) unix-status))
+ (/show0 "entering QUIT")
(if recklessly-p
(sb!unix:unix-exit unix-status)
- (throw '%end-of-the-world unix-code)))
+ (throw '%end-of-the-world unix-status))
+ (critically-unreachable "after trying to die in QUIT"))
\f
;;;; initialization functions
+(defun thread-init-or-reinit ()
+ (sb!thread::init-initial-thread)
+ (sb!thread::init-job-control)
+ (sb!thread::get-foreground))
+
(defun reinit ()
(without-interrupts
(without-gcing
- (os-cold-init-or-reinit)
+ (os-cold-init-or-reinit)
+ (thread-init-or-reinit)
(stream-reinit)
(signal-cold-init-or-reinit)
- (gc-cold-init-or-reinit)
(setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
- (set-floating-point-modes :traps
- ;; PRINT seems to not like x86 NPX denormal
- ;; floats like LEAST-NEGATIVE-SINGLE-FLOAT, so
- ;; the :UNDERFLOW exceptions are disabled by
- ;; default. Joe User can explicitly enable them
- ;; if desired.
- '(:overflow #!-x86 :underflow :invalid
- :divide-by-zero))
- ;; Clear pseudo atomic in case this core wasn't compiled with
- ;; support.
+ ;; PRINT seems not to like x86 NPX denormal floats like
+ ;; LEAST-NEGATIVE-SINGLE-FLOAT, so the :UNDERFLOW exceptions are
+ ;; disabled by default. Joe User can explicitly enable them if
+ ;; desired.
;;
- ;; FIXME: In SBCL our cores are always compiled with support. So
- ;; we don't need to do this, do we? At least not for this
- ;; reason.. (Perhaps we should do it anyway in case someone
- ;; manages to save an image from within a pseudo-atomic-atomic
- ;; operation?)
- #!+x86 (setf sb!impl::*pseudo-atomic-atomic* 0))
- (gc-on)))
+ ;; see also comment at the previous SET-FLOATING-POINT-MODES
+ ;; call site.
+ (set-floating-point-modes
+ :traps '(:overflow #!-netbsd :invalid :divide-by-zero))))
+ (gc-reinit)
+ ;; make sure TIME works correctly from saved cores
+ (setf *internal-real-time-base-seconds* nil)
+ (foreign-reinit)
+ (dolist (hook *init-hooks*)
+ (with-simple-restart (continue "Skip this initialization hook.")
+ (funcall hook))))
\f
;;;; some support for any hapless wretches who end up debugging cold
;;;; init code
-;;; Decode THING into hex using only machinery available early in cold
-;;; init.
+;;; Decode THING into hexadecimal notation using only machinery
+;;; available early in cold init.
#!+sb-show
(defun hexstr (thing)
- (let ((addr (sb!kernel:get-lisp-obj-address thing))
- (str (make-string 10)))
+ (/noshow0 "entering HEXSTR")
+ (let ((addr (get-lisp-obj-address thing))
+ (str (make-string 10 :element-type 'base-char)))
+ (/noshow0 "ADDR and STR calculated")
(setf (char str 0) #\0
- (char str 1) #\x)
+ (char str 1) #\x)
+ (/noshow0 "CHARs 0 and 1 set")
(dotimes (i 8)
+ (/noshow0 "at head of DOTIMES loop")
(let* ((nibble (ldb (byte 4 0) addr))
- (chr (char "0123456789abcdef" nibble)))
- (declare (type (unsigned-byte 4) nibble)
- (base-char chr))
- (setf (char str (- 9 i)) chr
- addr (ash addr -4))))
+ (chr (char "0123456789abcdef" nibble)))
+ (declare (type (unsigned-byte 4) nibble)
+ (base-char chr))
+ (/noshow0 "NIBBLE and CHR calculated")
+ (setf (char str (- 9 i)) chr
+ addr (ash addr -4))))
str))
#!+sb-show
(simple-string (sb!sys:%primitive print x))
(symbol (sb!sys:%primitive print (symbol-name x)))
(list (let ((count 0))
- (sb!sys:%primitive print "list:")
- (dolist (i x)
- (when (>= (incf count) 4)
- (sb!sys:%primitive print "...")
- (return))
- (cold-print i))))
+ (sb!sys:%primitive print "list:")
+ (dolist (i x)
+ (when (>= (incf count) 4)
+ (sb!sys:%primitive print "...")
+ (return))
+ (cold-print i))))
(t (sb!sys:%primitive print (hexstr x)))))
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