X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fcold-init.lisp;h=23906300d4df0581aec14e628bb078eec8039af5;hb=5277a0cbf1a72243cad6808883a4847acefc8e6b;hp=956797f6689d33d6547b088a3664ca51c55eb072;hpb=5108495b13b99452d5a85c4600f68432ff8894b2;p=sbcl.git diff --git a/src/code/cold-init.lisp b/src/code/cold-init.lisp index 956797f..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) @@ -37,6 +40,23 @@ (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 @@ -45,31 +65,6 @@ ;;; a SIMPLE-VECTOR set by GENESIS (defvar *!load-time-values*) -(defun !cold-lose (msg) - (%primitive print msg) - (%primitive print "too early in cold init to recover from errors") - (%halt)) - -#!+gengc -(defun !do-load-time-value-fixup (object offset index) - (declare (type index offset)) - (let ((value (svref *!load-time-values* index))) - (typecase object - (list - (case offset - (0 (setf (car object) value)) - (1 (setf (cdr object) value)) - (t (!cold-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 - (!cold-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 @@ -90,20 +85,21 @@ ;; !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-notify-stream* nil) - (setf *before-gc-hooks* nil) - (setf *after-gc-hooks* nil) - #!+gengc (setf *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 @@ -177,14 +173,9 @@ (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) @@ -238,19 +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, 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") @@ -261,7 +245,8 @@ (terpri) (/show0 "going into toplevel loop") (handling-end-of-the-world - (toplevel-init))) + (toplevel-init) + (critically-unreachable "after TOPLEVEL-INIT"))) (defun quit (&key recklessly-p (unix-code 0 unix-code-p) @@ -270,7 +255,8 @@ "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)) + (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. @@ -279,7 +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 @@ -289,7 +276,7 @@ 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 '(:overflow @@ -311,7 +298,7 @@ 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