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")
53 (eval-when (:compile-toplevel :execute)
54 ;; FIXME: Perhaps we should make SHOW-AND-CALL-AND-FMAKUNBOUND, too,
55 ;; and use it for most of the cold-init functions. (Just be careful
56 ;; not to use it for the COLD-INIT-OR-REINIT functions.)
57 (sb!xc:defmacro show-and-call (name)
59 (/primitive-print ,(symbol-name name))
62 ;;; called when a cold system starts up
64 #!+sb-doc "Give the world a shove and hope it spins."
66 (/show0 "entering !COLD-INIT")
68 ;; FIXME: It'd probably be cleaner to have most of the stuff here
69 ;; handled by calls like !GC-COLD-INIT, !ERROR-COLD-INIT, and
70 ;; !UNIX-COLD-INIT. And *TYPE-SYSTEM-INITIALIZED* could be changed to
71 ;; *TYPE-SYSTEM-INITIALIZED-WHEN-BOUND* so that it doesn't need to
72 ;; be explicitly set in order to be meaningful.
73 (setf *gc-notify-stream* nil
76 *already-maybe-gcing* t
78 *need-to-collect-garbage* nil
79 sb!unix::*interrupts-enabled* t
80 sb!unix::*interrupt-pending* nil
81 *break-on-signals* nil
82 *maximum-error-depth* 10
83 *current-error-depth* 0
84 *cold-init-complete-p* nil
85 *type-system-initialized* nil)
87 ;; Anyone might call RANDOM to initialize a hash value or something;
88 ;; and there's nothing which needs to be initialized in order for
89 ;; this to be initialized, so we initialize it right away.
90 (show-and-call !random-cold-init)
92 (show-and-call !package-cold-init)
94 ;; All sorts of things need INFO and/or (SETF INFO).
95 (/show0 "about to SHOW-AND-CALL !GLOBALDB-COLD-INIT")
96 (show-and-call !globaldb-cold-init)
98 ;; This needs to be done early, but needs to be after INFO is
100 (show-and-call !fdefn-cold-init)
102 ;; Various toplevel forms call MAKE-ARRAY, which calls SUBTYPEP, so
103 ;; the basic type machinery needs to be initialized before toplevel
105 (show-and-call !type-class-cold-init)
106 (show-and-call !typedefs-cold-init)
107 (show-and-call !classes-cold-init)
108 (show-and-call !early-type-cold-init)
109 (show-and-call !late-type-cold-init)
110 (show-and-call !alien-type-cold-init)
111 (show-and-call !target-type-cold-init)
112 (show-and-call !vm-type-cold-init)
113 ;; FIXME: It would be tidy to make sure that that these cold init
114 ;; functions are called in the same relative order as the toplevel
115 ;; forms of the corresponding source files.
117 ;;(show-and-call !package-cold-init)
118 (show-and-call !policy-cold-init-or-resanify)
119 (/show0 "back from !POLICY-COLD-INIT-OR-RESANIFY")
121 ;; KLUDGE: Why are fixups mixed up with toplevel forms? Couldn't
122 ;; fixups be done separately? Wouldn't that be clearer and better?
124 (/show0 "doing cold toplevel forms and fixups")
125 (/show0 "(LISTP *!REVERSED-COLD-TOPLEVELS*)=..")
126 (/hexstr (if (listp *!reversed-cold-toplevels*) "true" "NIL"))
127 (/show0 "about to calculate (LENGTH *!REVERSED-COLD-TOPLEVELS*)")
128 (/show0 "(LENGTH *!REVERSED-COLD-TOPLEVELS*)=..")
129 #!+sb-show (let ((r-c-tl-length (length *!reversed-cold-toplevels*)))
130 (/show0 "(length calculated..)")
131 (let ((hexstr (hexstr r-c-tl-length)))
132 (/show0 "(hexstr calculated..)")
133 (/primitive-print hexstr)))
134 (let (#!+sb-show (index-in-cold-toplevels 0))
135 #!+sb-show (declare (type fixnum index-in-cold-toplevels))
137 (dolist (toplevel-thing (prog1
138 (nreverse *!reversed-cold-toplevels*)
139 ;; (Now that we've NREVERSEd it, it's
140 ;; somewhat scrambled, so keep anyone
141 ;; else from trying to get at it.)
142 (makunbound '*!reversed-cold-toplevels*)))
144 (when (zerop (mod index-in-cold-toplevels 1024))
145 (/show0 "INDEX-IN-COLD-TOPLEVELS=..")
146 (/hexstr index-in-cold-toplevels))
148 (setf index-in-cold-toplevels
149 (the fixnum (1+ index-in-cold-toplevels)))
150 (typecase toplevel-thing
152 (funcall toplevel-thing))
154 (case (first toplevel-thing)
156 (setf (svref *!load-time-values* (third toplevel-thing))
157 (funcall (second toplevel-thing))))
158 (:load-time-value-fixup
160 (setf (sap-ref-32 (second toplevel-thing) 0)
161 (get-lisp-obj-address
162 (svref *!load-time-values* (third toplevel-thing)))))
164 (:load-time-code-fixup
165 (sb!vm::!do-load-time-code-fixup (second toplevel-thing)
166 (third toplevel-thing)
167 (fourth toplevel-thing)
168 (fifth toplevel-thing)))
170 (!cold-lose "bogus fixup code in *!REVERSED-COLD-TOPLEVELS*"))))
171 (t (!cold-lose "bogus function in *!REVERSED-COLD-TOPLEVELS*")))))
172 (/show0 "done with loop over cold toplevel forms and fixups")
174 ;; Set sane values again, so that the user sees sane values instead
175 ;; of whatever is left over from the last DECLAIM/PROCLAIM.
176 (show-and-call !policy-cold-init-or-resanify)
178 ;; Only do this after toplevel forms have run, 'cause that's where
180 (setf *type-system-initialized* t)
182 (show-and-call os-cold-init-or-reinit)
184 (show-and-call stream-cold-init-or-reset)
185 (show-and-call !loader-cold-init)
186 (show-and-call signal-cold-init-or-reinit)
187 (setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
189 ;; FIXME: This list of modes should be defined in one place and
190 ;; explicitly shared between here and REINIT.
192 ;; FIXME: In CMU CL, this is done "here" (i.e. in the analogous
193 ;; lispinit.lisp code) for every processor architecture. But Daniel
194 ;; Barlow's Alpha patches suppress it for Alpha. Why the difference?
196 (set-floating-point-modes :traps '(:overflow
201 (show-and-call !class-finalize)
203 ;; The reader and printer are initialized very late, so that they
204 ;; can do hairy things like invoking the compiler as part of their
206 (show-and-call !reader-cold-init)
207 (let ((*readtable* *standard-readtable*))
208 (show-and-call !sharpm-cold-init)
209 (show-and-call !backq-cold-init))
210 (setf *readtable* (copy-readtable *standard-readtable*))
211 (setf sb!debug:*debug-readtable* (copy-readtable *standard-readtable*))
212 (sb!pretty:!pprint-cold-init)
214 ;; the ANSI-specified initial value of *PACKAGE*
215 (setf *package* (find-package "COMMON-LISP-USER"))
216 ;; FIXME: I'm not sure where it should be done, but CL-USER really
217 ;; ought to USE-PACKAGE publicly accessible packages like SB-DEBUG
218 ;; (for ARG and VAR), SB-EXT, SB-EXT-C-CALL, and SB-EXT-ALIEN so
219 ;; that the user has a hint about which symbols we consider public.
220 ;; (Perhaps SB-DEBUG wouldn't need to be in the list if ARG and VAR
221 ;; could be typed directly, with no parentheses, at the debug prompt
222 ;; the way that e.g. F or BACKTRACE can be?)
224 (/show0 "done initializing, setting *COLD-INIT-COMPLETE-P*")
225 (setf *cold-init-complete-p* t)
227 ;; The system is finally ready for GC.
228 #!-gengc (setf *already-maybe-gcing* nil)
229 (/show0 "enabling GC")
231 (/show0 "doing first GC")
233 (/show0 "back from first GC")
237 (/show0 "going into toplevel loop")
238 (handling-end-of-the-world
241 (defun quit (&key recklessly-p
242 (unix-code 0 unix-code-p)
243 (unix-status unix-code))
245 "Terminate the current Lisp. Things are cleaned up (with UNWIND-PROTECT
246 and so forth) unless RECKLESSLY-P is non-NIL. On UNIX-like systems,
247 UNIX-STATUS is used as the status code."
248 (declare (type (signed-byte 32) unix-code))
249 ;; FIXME: UNIX-CODE was deprecated in sbcl-0.6.8, after having been
250 ;; around for less than a year. It should be safe to remove it after
253 (warn "The UNIX-CODE argument is deprecated. Use the UNIX-STATUS argument
254 instead (which is another name for the same thing)."))
256 (sb!unix:unix-exit unix-status)
257 (throw '%end-of-the-world unix-status)))
259 ;;;; initialization functions
264 (os-cold-init-or-reinit)
266 (signal-cold-init-or-reinit)
268 (setf (sb!alien:extern-alien "internal_errors_enabled" boolean) t)
269 (set-floating-point-modes :traps
273 ;; PRINT seems not to like x86 NPX
274 ;; denormal floats like
275 ;; LEAST-NEGATIVE-SINGLE-FLOAT, so
276 ;; the :UNDERFLOW exceptions are
277 ;; disabled by default. Joe User can
278 ;; explicitly enable them if
281 ;; Clear pseudo atomic in case this core wasn't compiled with
284 ;; FIXME: In SBCL our cores are always compiled with support. So
285 ;; we don't need to do this, do we? At least not for this
286 ;; reason.. (Perhaps we should do it anyway in case someone
287 ;; manages to save an image from within a pseudo-atomic-atomic
289 #!+x86 (setf *pseudo-atomic-atomic* 0))
292 ;;;; some support for any hapless wretches who end up debugging cold
295 ;;; Decode THING into hexadecimal notation using only machinery
296 ;;; available early in cold init.
298 (defun hexstr (thing)
299 (/noshow0 "entering HEXSTR")
300 (let ((addr (sb!kernel:get-lisp-obj-address thing))
301 (str (make-string 10)))
302 (/noshow0 "ADDR and STR calculated")
303 (setf (char str 0) #\0
305 (/noshow0 "CHARs 0 and 1 set")
307 (/noshow0 "at head of DOTIMES loop")
308 (let* ((nibble (ldb (byte 4 0) addr))
309 (chr (char "0123456789abcdef" nibble)))
310 (declare (type (unsigned-byte 4) nibble)
312 (/noshow0 "NIBBLE and CHR calculated")
313 (setf (char str (- 9 i)) chr
314 addr (ash addr -4))))
318 (defun cold-print (x)
320 (simple-string (sb!sys:%primitive print x))
321 (symbol (sb!sys:%primitive print (symbol-name x)))
322 (list (let ((count 0))
323 (sb!sys:%primitive print "list:")
325 (when (>= (incf count) 4)
326 (sb!sys:%primitive print "...")
329 (t (sb!sys:%primitive print (hexstr x)))))