Merge git://sbcl.boinkor.net/sbcl
[sbcl/lichteblau.git] / src / code / cold-init.lisp
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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
5 ;;;; more information.
6 ;;;;
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
23 ;;; uninterned.
24 ;;;
25 ;;; FIXME: Are there other tables that need to have entries removed?
26 ;;; What about symbols of the form DEF!FOO?
27 (defun !unintern-init-only-stuff ()
28 (do ((any-changes? nil nil))
29 (nil)
30 (dolist (package (list-all-packages))
31 (do-symbols (symbol package)
32 (let ((name (symbol-name symbol)))
33 (when (or (string= name "!" :end1 1 :end2 1)
34 (and (>= (length name) 2)
35 (string= name "*!" :end1 2 :end2 2)))
36 (/show0 "uninterning cold-init-only symbol..")
37 (/primitive-print name)
38 ;; FIXME: Is this (FIRST (LAST *INFO-ENVIRONMENT*)) really
39 ;; meant to be an idiom to use? Is there a more obvious
40 ;; name for this? [e.g. (GLOBAL-ENVIRONMENT)?]
41 (do-info ((first (last *info-environment*))
42 :name entry :class class :type type)
43 (when (eq entry symbol)
44 (clear-info class type entry)))
45 (unintern symbol package)
46 (setf any-changes? t)))))
47 (unless any-changes?
48 (return))))
50 ;;;; putting ourselves out of our misery when things become too much to bear
52 (declaim (ftype (function (simple-string) nil) !cold-lose))
53 (defun !cold-lose (msg)
54 (%primitive print msg)
55 (%primitive print "too early in cold init to recover from errors")
56 (%halt))
58 ;;; last-ditch error reporting for things which should never happen
59 ;;; and which, if they do happen, are sufficiently likely to torpedo
60 ;;; the normal error-handling system that we want to bypass it
61 (declaim (ftype (function (simple-string) nil) critically-unreachable))
62 (defun critically-unreachable (where)
63 (%primitive print "internal error: Control should never reach here, i.e.")
64 (%primitive print where)
65 (%halt))
67 ;;;; !COLD-INIT
69 ;;; a list of toplevel things set by GENESIS
70 (defvar *!reversed-cold-toplevels*)
72 ;;; a SIMPLE-VECTOR set by GENESIS
73 (defvar *!load-time-values*)
75 (eval-when (:compile-toplevel :execute)
76 ;; FIXME: Perhaps we should make SHOW-AND-CALL-AND-FMAKUNBOUND, too,
77 ;; and use it for most of the cold-init functions. (Just be careful
78 ;; not to use it for the COLD-INIT-OR-REINIT functions.)
79 (sb!xc:defmacro show-and-call (name)
80 `(progn
81 (/primitive-print ,(symbol-name name))
82 (,name))))
84 ;;; called when a cold system starts up
85 (defun !cold-init ()
86 #!+sb-doc "Give the world a shove and hope it spins."
88 (/show0 "entering !COLD-INIT")
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 *after-gc-hooks* nil
96 *gc-inhibit* t
97 *gc-pending* nil
98 #!+sb-thread *stop-for-gc-pending* #!+sb-thread nil
99 *allow-with-interrupts* t
100 *interrupts-enabled* t
101 *interrupt-pending* nil
102 *break-on-signals* nil
103 *maximum-error-depth* 10
104 *current-error-depth* 0
105 *cold-init-complete-p* nil
106 *type-system-initialized* nil
107 sb!vm:*alloc-signal* nil)
109 ;; I'm not sure where eval is first called, so I put this first.
110 #!+sb-eval
111 (show-and-call sb!eval::!full-eval-cold-init)
113 (show-and-call thread-init-or-reinit)
114 (show-and-call !typecheckfuns-cold-init)
116 ;; Anyone might call RANDOM to initialize a hash value or something;
117 ;; and there's nothing which needs to be initialized in order for
118 ;; this to be initialized, so we initialize it right away.
119 (show-and-call !random-cold-init)
121 ;; Must be done before any non-opencoded array references are made.
122 (show-and-call !hairy-data-vector-reffer-init)
124 (show-and-call !character-database-cold-init)
125 (show-and-call !character-name-database-cold-init)
127 (show-and-call !early-package-cold-init)
128 (show-and-call !package-cold-init)
130 ;; All sorts of things need INFO and/or (SETF INFO).
131 (/show0 "about to SHOW-AND-CALL !GLOBALDB-COLD-INIT")
132 (show-and-call !globaldb-cold-init)
134 ;; This needs to be done early, but needs to be after INFO is
135 ;; initialized.
136 (show-and-call !function-names-cold-init)
137 (show-and-call !fdefn-cold-init)
139 ;; Various toplevel forms call MAKE-ARRAY, which calls SUBTYPEP, so
140 ;; the basic type machinery needs to be initialized before toplevel
141 ;; forms run.
142 (show-and-call !type-class-cold-init)
143 (show-and-call !typedefs-cold-init)
144 (show-and-call !classes-cold-init)
145 (show-and-call !early-type-cold-init)
146 (show-and-call !late-type-cold-init)
147 (show-and-call !alien-type-cold-init)
148 (show-and-call !target-type-cold-init)
149 (show-and-call !vm-type-cold-init)
150 ;; FIXME: It would be tidy to make sure that that these cold init
151 ;; functions are called in the same relative order as the toplevel
152 ;; forms of the corresponding source files.
154 ;;(show-and-call !package-cold-init)
155 (show-and-call !policy-cold-init-or-resanify)
156 (/show0 "back from !POLICY-COLD-INIT-OR-RESANIFY")
158 (show-and-call !constantp-cold-init)
159 (show-and-call !early-proclaim-cold-init)
161 ;; KLUDGE: Why are fixups mixed up with toplevel forms? Couldn't
162 ;; fixups be done separately? Wouldn't that be clearer and better?
163 ;; -- WHN 19991204
164 (/show0 "doing cold toplevel forms and fixups")
165 (/show0 "(LISTP *!REVERSED-COLD-TOPLEVELS*)=..")
166 (/hexstr (if (listp *!reversed-cold-toplevels*) "true" "NIL"))
167 (/show0 "about to calculate (LENGTH *!REVERSED-COLD-TOPLEVELS*)")
168 (/show0 "(LENGTH *!REVERSED-COLD-TOPLEVELS*)=..")
169 #!+sb-show (let ((r-c-tl-length (length *!reversed-cold-toplevels*)))
170 (/show0 "(length calculated..)")
171 (let ((hexstr (hexstr r-c-tl-length)))
172 (/show0 "(hexstr calculated..)")
173 (/primitive-print hexstr)))
174 (let (#!+sb-show (index-in-cold-toplevels 0))
175 #!+sb-show (declare (type fixnum index-in-cold-toplevels))
177 (dolist (toplevel-thing (prog1
178 (nreverse *!reversed-cold-toplevels*)
179 ;; (Now that we've NREVERSEd it, it's
180 ;; somewhat scrambled, so keep anyone
181 ;; else from trying to get at it.)
182 (makunbound '*!reversed-cold-toplevels*)))
183 #!+sb-show
184 (when (zerop (mod index-in-cold-toplevels 1024))
185 (/show0 "INDEX-IN-COLD-TOPLEVELS=..")
186 (/hexstr index-in-cold-toplevels))
187 #!+sb-show
188 (setf index-in-cold-toplevels
189 (the fixnum (1+ index-in-cold-toplevels)))
190 (typecase toplevel-thing
191 (function
192 (funcall toplevel-thing))
193 (cons
194 (case (first toplevel-thing)
195 (:load-time-value
196 (setf (svref *!load-time-values* (third toplevel-thing))
197 (funcall (second toplevel-thing))))
198 (:load-time-value-fixup
199 (setf (sap-ref-word (second toplevel-thing) 0)
200 (get-lisp-obj-address
201 (svref *!load-time-values* (third toplevel-thing)))))
202 #!+(and (or x86 x86-64) gencgc)
203 (:load-time-code-fixup
204 (sb!vm::!envector-load-time-code-fixup (second toplevel-thing)
205 (third toplevel-thing)
206 (fourth toplevel-thing)
207 (fifth toplevel-thing)))
209 (!cold-lose "bogus fixup code in *!REVERSED-COLD-TOPLEVELS*"))))
210 (t (!cold-lose "bogus function in *!REVERSED-COLD-TOPLEVELS*")))))
211 (/show0 "done with loop over cold toplevel forms and fixups")
213 ;; Set sane values again, so that the user sees sane values instead
214 ;; of whatever is left over from the last DECLAIM/PROCLAIM.
215 (show-and-call !policy-cold-init-or-resanify)
217 ;; Only do this after toplevel forms have run, 'cause that's where
218 ;; DEFTYPEs are.
219 (setf *type-system-initialized* t)
221 ;; now that the type system is definitely initialized, fixup UNKNOWN
222 ;; types that have crept in.
223 (show-and-call !fixup-type-cold-init)
224 ;; run the PROCLAIMs.
225 (show-and-call !late-proclaim-cold-init)
227 (show-and-call os-cold-init-or-reinit)
229 (show-and-call stream-cold-init-or-reset)
230 (show-and-call !loader-cold-init)
231 (show-and-call !foreign-cold-init)
232 #!-win32 (show-and-call signal-cold-init-or-reinit)
233 (/show0 "enabling internal errors")
234 (setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
236 (show-and-call float-cold-init-or-reinit)
238 (show-and-call !class-finalize)
240 ;; The reader and printer are initialized very late, so that they
241 ;; can do hairy things like invoking the compiler as part of their
242 ;; initialization.
243 (show-and-call !reader-cold-init)
244 (let ((*readtable* *standard-readtable*))
245 (show-and-call !sharpm-cold-init)
246 (show-and-call !backq-cold-init))
247 (setf *readtable* (copy-readtable *standard-readtable*))
248 (setf sb!debug:*debug-readtable* (copy-readtable *standard-readtable*))
249 (sb!pretty:!pprint-cold-init)
251 ;; the ANSI-specified initial value of *PACKAGE*
252 (setf *package* (find-package "COMMON-LISP-USER"))
254 (/show0 "done initializing, setting *COLD-INIT-COMPLETE-P*")
255 (setf *cold-init-complete-p* t)
257 ;; The system is finally ready for GC.
258 (/show0 "enabling GC")
259 (gc-on)
260 (/show0 "doing first GC")
261 (gc :full t)
262 (/show0 "back from first GC")
264 ;; The show is on.
265 (terpri)
266 (/show0 "going into toplevel loop")
267 (handling-end-of-the-world
268 (toplevel-init)
269 (critically-unreachable "after TOPLEVEL-INIT")))
271 (defun quit (&key recklessly-p (unix-status 0))
272 #!+sb-doc
273 "Terminate the current Lisp. Things are cleaned up (with
274 UNWIND-PROTECT and so forth) unless RECKLESSLY-P is non-NIL. On
275 UNIX-like systems, UNIX-STATUS is used as the status code."
276 (declare (type (signed-byte 32) unix-status))
277 (/show0 "entering QUIT")
278 (if recklessly-p
279 (sb!unix:unix-exit unix-status)
280 (throw '%end-of-the-world unix-status))
281 (critically-unreachable "after trying to die in QUIT"))
283 ;;;; initialization functions
285 (defun thread-init-or-reinit ()
286 (sb!thread::init-initial-thread)
287 (sb!thread::init-job-control)
288 (sb!thread::get-foreground))
290 (defun reinit ()
291 (setf *default-external-format* nil)
292 (setf sb!alien::*default-c-string-external-format* nil)
293 ;; WITHOUT-GCING implies WITHOUT-INTERRUPTS.
294 (without-gcing
295 (os-cold-init-or-reinit)
296 (thread-init-or-reinit)
297 (stream-reinit t)
298 #!-win32
299 (signal-cold-init-or-reinit)
300 (setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
301 (float-cold-init-or-reinit))
302 (gc-reinit)
303 (foreign-reinit)
304 (time-reinit)
305 ;; If the debugger was disabled in the saved core, we need to
306 ;; re-disable ldb again.
307 (when (eq *invoke-debugger-hook* 'sb!debug::debugger-disabled-hook)
308 (sb!debug::disable-debugger))
309 (dolist (hook *init-hooks*)
310 (with-simple-restart (continue "Skip this initialization hook.")
311 (funcall hook))))
313 ;;;; some support for any hapless wretches who end up debugging cold
314 ;;;; init code
316 ;;; Decode THING into hexadecimal notation using only machinery
317 ;;; available early in cold init.
318 #!+sb-show
319 (defun hexstr (thing)
320 (/noshow0 "entering HEXSTR")
321 (let ((addr (get-lisp-obj-address thing))
322 (str (make-string 10 :element-type 'base-char)))
323 (/noshow0 "ADDR and STR calculated")
324 (setf (char str 0) #\0
325 (char str 1) #\x)
326 (/noshow0 "CHARs 0 and 1 set")
327 (dotimes (i 8)
328 (/noshow0 "at head of DOTIMES loop")
329 (let* ((nibble (ldb (byte 4 0) addr))
330 (chr (char "0123456789abcdef" nibble)))
331 (declare (type (unsigned-byte 4) nibble)
332 (base-char chr))
333 (/noshow0 "NIBBLE and CHR calculated")
334 (setf (char str (- 9 i)) chr
335 addr (ash addr -4))))
336 str))
338 #!+sb-show
339 (defun cold-print (x)
340 (typecase x
341 (simple-string (sb!sys:%primitive print x))
342 (symbol (sb!sys:%primitive print (symbol-name x)))
343 (list (let ((count 0))
344 (sb!sys:%primitive print "list:")
345 (dolist (i x)
346 (when (>= (incf count) 4)
347 (sb!sys:%primitive print "...")
348 (return))
349 (cold-print i))))
350 (t (sb!sys:%primitive print (hexstr x)))))