X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fcold-init.lisp;h=23906300d4df0581aec14e628bb078eec8039af5;hb=5277a0cbf1a72243cad6808883a4847acefc8e6b;hp=24548040a094542edb07da7b36302563fd3b68b2;hpb=cea4896b2482b7b2b429c1631d774b4cfbc0efba;p=sbcl.git diff --git a/src/code/cold-init.lisp b/src/code/cold-init.lisp index 2454804..2390630 100644 --- a/src/code/cold-init.lisp +++ b/src/code/cold-init.lisp @@ -21,6 +21,9 @@ ;;; which might be tedious to maintain, instead we use a hack: ;;; anything whose name matches a magic character pattern is ;;; uninterned. +;;; +;;; FIXME: should also go through globaldb (and perhaps other tables) +;;; blowing away associated entries (defun !unintern-init-only-stuff () (do ((any-changes? nil nil)) (nil) @@ -31,51 +34,44 @@ (and (>= (length name) 2) (string= name "*!" :end1 2 :end2 2))) (/show0 "uninterning cold-init-only symbol..") - #!+sb-show (%primitive print name) + (/primitive-print name) (unintern symbol package) (setf any-changes? t))))) (unless any-changes? (return)))) +;;;; putting ourselves out of our misery when things become too much to bear + +(declaim (ftype (function (simple-string) nil) critically-unreachable)) +(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)) + ;;;; !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 @@ -85,31 +81,33 @@ (/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 *gc-notify-stream* nil + *before-gc-hooks* nil + *after-gc-hooks* nil + *already-maybe-gcing* t + *gc-inhibit* t + *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 !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) @@ -133,21 +131,26 @@ ;; functions are called in the same relative order as the toplevel ;; forms of the corresponding source files. - (show-and-call !package-cold-init) - - ;; Set sane values for our toplevel forms. - (show-and-call !set-sane-cookie-defaults) + ;;(show-and-call !package-cold-init) + (show-and-call !policy-cold-init-or-resanify) + (/show0 "back from !POLICY-COLD-INIT-OR-RESANIFY") ;; 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 @@ -157,7 +160,7 @@ #!+sb-show (when (zerop (mod index-in-cold-toplevels 1024)) (/show0 "INDEX-IN-COLD-TOPLEVELS=..") - (%primitive print (sb!impl::hexstr index-in-cold-toplevels))) + (/hexstr index-in-cold-toplevels)) #!+sb-show (setf index-in-cold-toplevels (the fixnum (1+ index-in-cold-toplevels))) @@ -170,39 +173,29 @@ (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))) + (svref *!load-time-values* (third 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))) + (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))))) + (!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) (show-and-call os-cold-init-or-reinit) - (show-and-call !filesys-cold-init) (show-and-call stream-cold-init-or-reset) (show-and-call !loader-cold-init) @@ -211,6 +204,11 @@ ;; FIXME: This list of modes should be defined in one place and ;; explicitly shared between here and REINIT. + ;; + ;; FIXME: In CMU CL, this is done "here" (i.e. in the analogous + ;; lispinit.lisp code) for every processor architecture. But Daniel + ;; Barlow's Alpha patches suppress it for Alpha. Why the difference? + #!+alpha (set-floating-point-modes :traps '(:overflow #!-x86 :underflow :invalid @@ -219,8 +217,8 @@ (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) @@ -231,23 +229,12 @@ ;; 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) + (setf *already-maybe-gcing* nil) (/show0 "enabling GC") (gc-on) (/show0 "doing first GC") @@ -258,7 +245,8 @@ (terpri) (/show0 "going into toplevel loop") (handling-end-of-the-world - (toplevel))) + (toplevel-init) + (critically-unreachable "after TOPLEVEL-INIT"))) (defun quit (&key recklessly-p (unix-code 0 unix-code-p) @@ -267,8 +255,9 @@ "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 + (declare (type (signed-byte 32) unix-status unix-code)) + (/show0 "entering QUIT") + ;; FIXME: 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 @@ -276,7 +265,8 @@ instead (which is another name for the same thing).")) (if recklessly-p (sb!unix:unix-exit unix-status) - (throw '%end-of-the-world unix-status))) + (throw '%end-of-the-world unix-status)) + (critically-unreachable "after trying to die in QUIT")) ;;;; initialization functions @@ -286,16 +276,20 @@ instead (which is another name for the same thing).")) (os-cold-init-or-reinit) (stream-reinit) (signal-cold-init-or-reinit) - (gc-cold-init-or-reinit) + (gc-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)) + '(:overflow + :invalid + :divide-by-zero + ;; 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. + #!-x86 :underflow)) ;; Clear pseudo atomic in case this core wasn't compiled with ;; support. ;; @@ -304,25 +298,30 @@ instead (which is another name for the same thing).")) ;; 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)) + #!+x86 (setf *pseudo-atomic-atomic* 0)) (gc-on))) ;;;; 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) + (/noshow0 "entering HEXSTR") (let ((addr (sb!kernel:get-lisp-obj-address thing)) (str (make-string 10))) + (/noshow0 "ADDR and STR calculated") (setf (char str 0) #\0 (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)) + (/noshow0 "NIBBLE and CHR calculated") (setf (char str (- 9 i)) chr addr (ash addr -4)))) str))