1 ;;;; cold initialization stuff, plus some other miscellaneous stuff
2 ;;;; that we don't have any better place for
4 ;;;; This software is part of the SBCL system. See the README file for
7 ;;;; This software is derived from the CMU CL system, which was
8 ;;;; written at Carnegie Mellon University and released into the
9 ;;;; public domain. The software is in the public domain and is
10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
11 ;;;; files for more information.
13 (in-package "SB!IMPL")
15 ;;;; burning our ships behind us
17 ;;; There's a fair amount of machinery which is needed only at cold
18 ;;; init time, and should be discarded before freezing the final
19 ;;; system. We discard it by uninterning the associated symbols.
20 ;;; Rather than using a special table of symbols to be uninterned,
21 ;;; which might be tedious to maintain, instead we use a hack:
22 ;;; anything whose name matches a magic character pattern is
24 (defun !unintern-init-only-stuff ()
25 (do ((any-changes? nil nil))
27 (dolist (package (list-all-packages))
28 (do-symbols (symbol package)
29 (let ((name (symbol-name symbol)))
30 (when (or (string= name "!" :end1 1 :end2 1)
31 (and (>= (length name) 2)
32 (string= name "*!" :end1 2 :end2 2)))
33 (/show0 "uninterning cold-init-only symbol..")
34 (/primitive-print name)
35 (unintern symbol package)
36 (setf any-changes? t)))))
42 ;;; a list of toplevel things set by GENESIS
43 (defvar *!reversed-cold-toplevels*)
45 ;;; a SIMPLE-VECTOR set by GENESIS
46 (defvar *!load-time-values*)
48 (defun !cold-lose (msg)
49 (%primitive print msg)
50 (%primitive print "too early in cold init to recover from errors")
54 (defun !do-load-time-value-fixup (object offset index)
55 (declare (type index offset))
56 (let ((value (svref *!load-time-values* index)))
60 (0 (setf (car object) value))
61 (1 (setf (cdr object) value))
62 (t (!cold-lose "bogus offset in cons cell"))))
64 (setf (%instance-ref object (- offset sb!vm:instance-slots-offset))
67 (setf (code-header-ref object offset) value))
69 (setf (svref object (- offset sb!vm:vector-data-offset)) value))
71 (!cold-lose "unknown kind of object for load-time-value fixup")))))
73 (eval-when (:compile-toplevel :execute)
74 ;; FIXME: Perhaps we should make SHOW-AND-CALL-AND-FMAKUNBOUND, too,
75 ;; and use it for most of the cold-init functions. (Just be careful
76 ;; not to use it for the COLD-INIT-OR-REINIT functions.)
77 (sb!xc:defmacro show-and-call (name)
79 (/primitive-print ,(symbol-name name))
82 ;;; called when a cold system starts up
84 #!+sb-doc "Give the world a shove and hope it spins."
86 (/show0 "entering !COLD-INIT")
88 (%primitive print "//entering !COLD-INIT") ; REMOVEME
90 ;; FIXME: It'd probably be cleaner to have most of the stuff here
91 ;; handled by calls like !GC-COLD-INIT, !ERROR-COLD-INIT, and
92 ;; !UNIX-COLD-INIT. And *TYPE-SYSTEM-INITIALIZED* could be changed to
93 ;; *TYPE-SYSTEM-INITIALIZED-WHEN-BOUND* so that it doesn't need to
94 ;; be explicitly set in order to be meaningful.
95 (setf *gc-notify-stream* nil)
96 (setf *before-gc-hooks* nil)
97 (setf *after-gc-hooks* nil)
98 #!+gengc (setf *handler-clusters* nil)
99 #!-gengc (setf *already-maybe-gcing* t
101 *need-to-collect-garbage* nil
102 sb!unix::*interrupts-enabled* t
103 sb!unix::*interrupt-pending* nil)
104 (setf *break-on-signals* nil)
105 (setf *maximum-error-depth* 10)
106 (setf *current-error-depth* 0)
107 (setf *cold-init-complete-p* nil)
108 (setf *type-system-initialized* nil)
110 (%primitive print "//done with SETFs") ; REMOVEME
112 ;; Anyone might call RANDOM to initialize a hash value or something;
113 ;; and there's nothing which needs to be initialized in order for
114 ;; this to be initialized, so we initialize it right away.
115 (show-and-call !random-cold-init)
117 (show-and-call !package-cold-init)
119 ;; All sorts of things need INFO and/or (SETF INFO).
120 (/show0 "about to SHOW-AND-CALL !GLOBALDB-COLD-INIT")
121 (show-and-call !globaldb-cold-init)
123 ;; This needs to be done early, but needs to be after INFO is
125 (show-and-call !fdefn-cold-init)
127 ;; Various toplevel forms call MAKE-ARRAY, which calls SUBTYPEP, so
128 ;; the basic type machinery needs to be initialized before toplevel
130 (show-and-call !type-class-cold-init)
131 (show-and-call !typedefs-cold-init)
132 (show-and-call !classes-cold-init)
133 (show-and-call !early-type-cold-init)
134 (show-and-call !late-type-cold-init)
135 (show-and-call !alien-type-cold-init)
136 (show-and-call !target-type-cold-init)
137 (show-and-call !vm-type-cold-init)
138 ;; FIXME: It would be tidy to make sure that that these cold init
139 ;; functions are called in the same relative order as the toplevel
140 ;; forms of the corresponding source files.
142 (%primitive print "//about to !POLICY-COLD-INIT-OR-RESANIFY") ; REMOVEME
144 ;;(show-and-call !package-cold-init)
145 (show-and-call !policy-cold-init-or-resanify)
146 (/show0 "back from !POLICY-COLD-INIT-OR-RESANIFY")
148 ;; KLUDGE: Why are fixups mixed up with toplevel forms? Couldn't
149 ;; fixups be done separately? Wouldn't that be clearer and better?
151 (/show0 "doing cold toplevel forms and fixups")
152 (/show0 "(LISTP *!REVERSED-COLD-TOPLEVELS*)=..")
153 (/hexstr (if (listp *!reversed-cold-toplevels*) "true" "NIL"))
154 (/show0 "about to calculate (LENGTH *!REVERSED-COLD-TOPLEVELS*)")
155 (/show0 "(LENGTH *!REVERSED-COLD-TOPLEVELS*)=..")
156 #!+sb-show (let ((r-c-tl-length (length *!reversed-cold-toplevels*)))
157 (/show0 "(length calculated..)")
158 (let ((hexstr (hexstr r-c-tl-length)))
159 (/show0 "(hexstr calculated..)")
160 (/primitive-print hexstr)))
161 (let (#!+sb-show (index-in-cold-toplevels 0))
162 #!+sb-show (declare (type fixnum index-in-cold-toplevels))
163 (%primitive print "//about to DOLIST TOPLEVEL-THING") ; REMOVEME
165 (dolist (toplevel-thing (prog1
166 (nreverse *!reversed-cold-toplevels*)
167 ;; (Now that we've NREVERSEd it, it's
168 ;; somewhat scrambled, so keep anyone
169 ;; else from trying to get at it.)
170 (makunbound '*!reversed-cold-toplevels*)))
172 (when (zerop (mod index-in-cold-toplevels 1024))
173 (/show0 "INDEX-IN-COLD-TOPLEVELS=..")
174 (/hexstr index-in-cold-toplevels))
176 (setf index-in-cold-toplevels
177 (the fixnum (1+ index-in-cold-toplevels)))
178 (typecase toplevel-thing
180 (funcall toplevel-thing))
182 (case (first toplevel-thing)
184 (setf (svref *!load-time-values* (third toplevel-thing))
185 (funcall (second toplevel-thing))))
186 (:load-time-value-fixup
188 (setf (sap-ref-32 (second toplevel-thing) 0)
189 (get-lisp-obj-address
190 (svref *!load-time-values* (third toplevel-thing))))
192 (!do-load-time-value-fixup (second toplevel-thing)
193 (third toplevel-thing)
194 (fourth toplevel-thing)))
196 (:load-time-code-fixup
197 (sb!vm::!do-load-time-code-fixup (second toplevel-thing)
198 (third toplevel-thing)
199 (fourth toplevel-thing)
200 (fifth toplevel-thing)))
202 (!cold-lose "bogus fixup code in *!REVERSED-COLD-TOPLEVELS*"))))
203 (t (!cold-lose "bogus function in *!REVERSED-COLD-TOPLEVELS*")))))
204 (/show0 "done with loop over cold toplevel forms and fixups")
205 (%primitive print "//done with DOLIST TOPLEVEL-THING") ; REMOVEME
207 ;; Set sane values again, so that the user sees sane values instead
208 ;; of whatever is left over from the last DECLAIM/PROCLAIM.
209 (show-and-call !policy-cold-init-or-resanify)
211 ;; Only do this after toplevel forms have run, 'cause that's where
213 (setf *type-system-initialized* t)
215 (show-and-call os-cold-init-or-reinit)
217 (show-and-call stream-cold-init-or-reset)
218 (show-and-call !loader-cold-init)
219 (show-and-call signal-cold-init-or-reinit)
220 (setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
222 ;; FIXME: This list of modes should be defined in one place and
223 ;; explicitly shared between here and REINIT.
225 ;; FIXME: In CMU CL, this is done "here" (i.e. in the analogous
226 ;; lispinit.lisp code) for every processor architecture. But Daniel
227 ;; Barlow's Alpha patches suppress it for Alpha. Why the difference?
229 (set-floating-point-modes :traps '(:overflow
234 (%primitive print "//about to !CLASS-FINALIZE") ; REMOVEME
235 (show-and-call !class-finalize)
237 ;; The reader and printer are initialized very late, so that they
238 ;; can do hairy things like invoking the compiler as part of their
240 (show-and-call !reader-cold-init)
241 (let ((*readtable* *standard-readtable*))
242 (show-and-call !sharpm-cold-init)
243 (show-and-call !backq-cold-init))
244 (setf *readtable* (copy-readtable *standard-readtable*))
245 (setf sb!debug:*debug-readtable* (copy-readtable *standard-readtable*))
246 (sb!pretty:!pprint-cold-init)
248 ;; the ANSI-specified initial value of *PACKAGE*
249 (setf *package* (find-package "COMMON-LISP-USER"))
250 ;; FIXME: I'm not sure where it should be done, but CL-USER really
251 ;; ought to USE-PACKAGE publicly accessible packages like SB-DEBUG
252 ;; (for ARG and VAR), SB-EXT, SB-EXT-C-CALL, and SB-EXT-ALIEN so
253 ;; that the user has a hint about which symbols we consider public.
254 ;; (Perhaps SB-DEBUG wouldn't need to be in the list if ARG and VAR
255 ;; could be typed directly, with no parentheses, at the debug prompt
256 ;; the way that e.g. F or BACKTRACE can be?)
258 (/show0 "done initializing")
259 (setf *cold-init-complete-p* t)
260 (%primitive print "//set *COLD-INIT-COMPLETE-P*") ; REMOVEME
262 ;; The system is finally ready for GC.
263 #!-gengc (setf *already-maybe-gcing* nil)
264 (/show0 "enabling GC")
266 (/show0 "doing first GC")
268 (/show0 "back from first GC")
270 (%primitive print "//back from first GC") ; REMOVEME
274 (/show0 "going into toplevel loop")
275 (handling-end-of-the-world
278 (defun quit (&key recklessly-p
279 (unix-code 0 unix-code-p)
280 (unix-status unix-code))
282 "Terminate the current Lisp. Things are cleaned up (with UNWIND-PROTECT
283 and so forth) unless RECKLESSLY-P is non-NIL. On UNIX-like systems,
284 UNIX-STATUS is used as the status code."
285 (declare (type (signed-byte 32) unix-code))
286 ;; FIXME: UNIX-CODE was deprecated in sbcl-0.6.8, after having been
287 ;; around for less than a year. It should be safe to remove it after
290 (warn "The UNIX-CODE argument is deprecated. Use the UNIX-STATUS argument
291 instead (which is another name for the same thing)."))
293 (sb!unix:unix-exit unix-status)
294 (throw '%end-of-the-world unix-status)))
296 ;;;; initialization functions
301 (os-cold-init-or-reinit)
303 (signal-cold-init-or-reinit)
304 (gc-cold-init-or-reinit)
305 (setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
306 (set-floating-point-modes :traps
310 ;; PRINT seems not to like x86 NPX
311 ;; denormal floats like
312 ;; LEAST-NEGATIVE-SINGLE-FLOAT, so
313 ;; the :UNDERFLOW exceptions are
314 ;; disabled by default. Joe User can
315 ;; explicitly enable them if
318 ;; Clear pseudo atomic in case this core wasn't compiled with
321 ;; FIXME: In SBCL our cores are always compiled with support. So
322 ;; we don't need to do this, do we? At least not for this
323 ;; reason.. (Perhaps we should do it anyway in case someone
324 ;; manages to save an image from within a pseudo-atomic-atomic
326 #!+x86 (setf sb!impl::*pseudo-atomic-atomic* 0))
329 ;;;; some support for any hapless wretches who end up debugging cold
332 ;;; Decode THING into hexadecimal notation using only machinery
333 ;;; available early in cold init.
335 (defun hexstr (thing)
336 (/noshow0 "entering HEXSTR")
337 (let ((addr (sb!kernel:get-lisp-obj-address thing))
338 (str (make-string 10)))
339 (/noshow0 "ADDR and STR calculated")
340 (setf (char str 0) #\0
342 (/noshow0 "CHARs 0 and 1 set")
344 (/noshow0 "at head of DOTIMES loop")
345 (let* ((nibble (ldb (byte 4 0) addr))
346 (chr (char "0123456789abcdef" nibble)))
347 (declare (type (unsigned-byte 4) nibble)
349 (/noshow0 "NIBBLE and CHR calculated")
350 (setf (char str (- 9 i)) chr
351 addr (ash addr -4))))
355 (defun cold-print (x)
357 (simple-string (sb!sys:%primitive print x))
358 (symbol (sb!sys:%primitive print (symbol-name x)))
359 (list (let ((count 0))
360 (sb!sys:%primitive print "list:")
362 (when (>= (incf count) 4)
363 (sb!sys:%primitive print "...")
366 (t (sb!sys:%primitive print (hexstr x)))))