0.8.9.18
[sbcl.git] / src / compiler / generic / genesis.lisp
index 8640884..dac2900 100644 (file)
 ;;; way to do this in high level data like this (as opposed to e.g. in
 ;;; IP packets), and in fact the CMU CL version number never ended up
 ;;; being incremented past 0. A better approach might be to use a
-;;; string which is set from CVS data.
+;;; string which is set from CVS data. (Though now as of sbcl-0.7.8 or
+;;; so, we have another problem that the core incompatibility
+;;; detection mechanisms are on such a hair trigger -- with even
+;;; different builds from the same sources being considered
+;;; incompatible -- that any coarser-grained versioning mechanisms
+;;; like this are largely irrelevant as long as the hair-triggering
+;;; persists.)
 ;;;
 ;;; 0: inherited from CMU CL
 ;;; 1: rearranged static symbols for sbcl-0.6.8
 ;;; 2: eliminated non-ANSI %DEFCONSTANT/%%DEFCONSTANT support,
 ;;;    deleted a slot from DEBUG-SOURCE structure
-(defconstant sbcl-core-version-integer 2)
+;;; 3: added build ID to cores to discourage sbcl/.core mismatch
+(defconstant sbcl-core-version-integer 3)
 
 (defun round-up (number size)
   #!+sb-doc
                            (ldb (byte 8 ,(- n 8 (* i 8))) new-value)))))
               `(progn
                  (defun ,name (bigvec byte-index)
-                  (aver (= sb!vm:n-word-bits 32))
-                  (aver (= sb!vm:n-byte-bits 8))
                   (logior ,@(ecase sb!c:*backend-byte-order*
                               (:little-endian ash-list-le)
                               (:big-endian ash-list-be))))
                 (defun (setf ,name) (new-value bigvec byte-index)
-                  (aver (= sb!vm:n-word-bits 32))
-                  (aver (= sb!vm:n-byte-bits 8))
                   (setf ,@(ecase sb!c:*backend-byte-order*
                             (:little-endian setf-list-le)
                             (:big-endian setf-list-be))))))))
   (make-bvref-n 8)
   (make-bvref-n 16)
-  (make-bvref-n 32))
+  (make-bvref-n 32)
+  (make-bvref-n 64))
+
+;; lispobj-sized word, whatever that may be
+(defun bvref-word (bytes index)
+  #!+x86-64 (bvref-64 bytes index)
+  #!-x86-64 (bvref-32 bytes index))
+
+(defun (setf bvref-word) (new-val bytes index)
+  #!+x86-64 (setf (bvref-64 bytes index) new-val)
+  #!-x86-64 (setf (bvref-32 bytes index) new-val))
 \f
 ;;;; representation of spaces in the core
 
       ;; it's hard to see how it could have been wrong, since CMU CL
       ;; genesis worked. It would be nice to understand how this came
       ;; to be.. -- WHN 19990901
-      (logior (ash bits -2) (ash -1 (- sb!vm:n-word-bits 2)))
-      (ash bits -2))))
+      (logior (ash bits (- 1 sb!vm:n-lowtag-bits)) 
+             (ash -1 (- sb!vm:n-word-bits (1- sb!vm:n-lowtag-bits))))
+      (ash bits  (- 1 sb!vm:n-lowtag-bits)))))
 
 ;;; common idioms
 (defun descriptor-bytes (des)
         (bytes (gspace-bytes gspace))
         (byte-index (ash (+ index (descriptor-word-offset address))
                          sb!vm:word-shift))
-        (value (bvref-32 bytes byte-index)))
+        (value (bvref-word bytes byte-index)))
     (make-random-descriptor value)))
 
 (declaim (ftype (function (descriptor) descriptor) read-memory))
     (let* ((bytes (gspace-bytes (descriptor-intuit-gspace address)))
           (byte-index (ash (+ index (descriptor-word-offset address))
                               sb!vm:word-shift)))
-      (setf (bvref-32 bytes byte-index)
+      (setf (bvref-word bytes byte-index)
            (descriptor-bits value)))))
 
 (declaim (ftype (function (descriptor descriptor)) write-memory))
         (des (allocate-vector-object gspace
                                      sb!vm:n-byte-bits
                                      (1+ length)
-                                     sb!vm:simple-string-widetag))
+                                     sb!vm:simple-base-string-widetag))
         (bytes (gspace-bytes gspace))
         (offset (+ (* sb!vm:vector-data-offset sb!vm:n-word-bytes)
                    (descriptor-byte-offset des))))
         (:big-endian
          (write-wordindexed des sb!vm:double-float-value-slot high-bits)
          (write-wordindexed des (1+ sb!vm:double-float-value-slot) low-bits)))
-       des))
-    #!+(and long-float x86)
-    (long-float
-     (let ((des (allocate-unboxed-object *dynamic*
-                                        sb!vm:n-word-bits
-                                        (1- sb!vm:long-float-size)
-                                        sb!vm:long-float-widetag))
-          (exp-bits (make-random-descriptor (long-float-exp-bits x)))
-          (high-bits (make-random-descriptor (long-float-high-bits x)))
-          (low-bits (make-random-descriptor (long-float-low-bits x))))
-       (ecase sb!c:*backend-byte-order*
-        (:little-endian
-         (write-wordindexed des sb!vm:long-float-value-slot low-bits)
-         (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
-         (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits))
-        (:big-endian
-         (error "LONG-FLOAT is not supported for big-endian byte order.")))
        des))))
 
 (defun complex-single-float-to-core (num)
       (ecase sb!c:*backend-byte-order*
        (:little-endian
         (write-wordindexed des sb!vm:complex-double-float-real-slot low-bits)
-        (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) high-bits))
+        (write-wordindexed des
+                           (1+ sb!vm:complex-double-float-real-slot)
+                           high-bits))
        (:big-endian
         (write-wordindexed des sb!vm:complex-double-float-real-slot high-bits)
-        (write-wordindexed des (1+ sb!vm:complex-double-float-real-slot) low-bits))))
+        (write-wordindexed des
+                           (1+ sb!vm:complex-double-float-real-slot)
+                           low-bits))))
     (let* ((imag (imagpart num))
           (high-bits (make-random-descriptor (double-float-high-bits imag)))
           (low-bits (make-random-descriptor (double-float-low-bits imag))))
       (ecase sb!c:*backend-byte-order*
        (:little-endian
-        (write-wordindexed des sb!vm:complex-double-float-imag-slot low-bits)
-        (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) high-bits))
+        (write-wordindexed des
+                           sb!vm:complex-double-float-imag-slot
+                           low-bits)
+        (write-wordindexed des
+                           (1+ sb!vm:complex-double-float-imag-slot)
+                           high-bits))
        (:big-endian
-        (write-wordindexed des sb!vm:complex-double-float-imag-slot high-bits)
-        (write-wordindexed des (1+ sb!vm:complex-double-float-imag-slot) low-bits))))
+        (write-wordindexed des
+                           sb!vm:complex-double-float-imag-slot
+                           high-bits)
+        (write-wordindexed des
+                           (1+ sb!vm:complex-double-float-imag-slot)
+                           low-bits))))
     des))
 
 ;;; Copy the given number to the core.
 (defun number-to-core (number)
   (typecase number
-    (integer (if (< (integer-length number) 30)
+    (integer (if (< (integer-length number) 
+                   (- (1+ sb!vm:n-word-bits) sb!vm:n-lowtag-bits))
                 (make-fixnum-descriptor number)
                 (bignum-to-core number)))
     (ratio (number-pair-to-core (number-to-core (numerator number))
 ;;;    <external-symbols>
 ;;;    <imported-internal-symbols>
 ;;;    <imported-external-symbols>
-;;;    <shadowing-symbols>)
+;;;    <shadowing-symbols>
+;;;    <package-documentation>)
 ;;;
 ;;; KLUDGE: It would be nice to implement the sublists as instances of
 ;;; a DEFSTRUCT (:TYPE LIST). (They'd still be lists, but at least we'd be
   (macrolet ((frob (symbol)
               `(cold-set ',symbol
                          (cold-fdefinition-object (cold-intern ',symbol)))))
-    (frob maybe-gc)
+    (frob sub-gc)
     (frob internal-error)
+    (frob sb!kernel::control-stack-exhausted-error)
     (frob sb!di::handle-breakpoint)
-    (frob sb!di::handle-fun-end-breakpoint))
+    (frob sb!di::handle-fun-end-breakpoint)
+    (frob sb!thread::handle-thread-exit))
 
-  (cold-set '*current-catch-block*          (make-fixnum-descriptor 0))
-  (cold-set '*current-unwind-protect-block* (make-fixnum-descriptor 0))
+  (cold-set 'sb!vm::*current-catch-block*          (make-fixnum-descriptor 0))
+  (cold-set 'sb!vm::*current-unwind-protect-block* (make-fixnum-descriptor 0))
 
   (cold-set '*free-interrupt-context-index* (make-fixnum-descriptor 0))
 
       (let* ((cold-package (car cold-package-symbols-entry))
             (symbols (cdr cold-package-symbols-entry))
             (shadows (package-shadowing-symbols cold-package))
+            (documentation (string-to-core (documentation cold-package t)))
             (internal *nil-descriptor*)
             (external *nil-descriptor*)
             (imported-internal *nil-descriptor*)
                               (cold-push handle imported-external)
                               (cold-push handle external)))))))
        (let ((r *nil-descriptor*))
+         (cold-push documentation r)
          (cold-push shadowing r)
          (cold-push imported-external r)
          (cold-push imported-internal r)
 
   (cold-set '*!reversed-cold-toplevels* *current-reversed-cold-toplevels*)
 
-  #!+x86
+  #!+(or x86 x86-64)
   (progn
     (cold-set 'sb!vm::*fp-constant-0d0* (number-to-core 0d0))
     (cold-set 'sb!vm::*fp-constant-1d0* (number-to-core 1d0))
     (cold-set 'sb!vm::*fp-constant-0f0* (number-to-core 0f0))
-    (cold-set 'sb!vm::*fp-constant-1f0* (number-to-core 1f0))
-    #!+long-float
-    (progn
-      (cold-set 'sb!vm::*fp-constant-0l0* (number-to-core 0L0))
-      (cold-set 'sb!vm::*fp-constant-1l0* (number-to-core 1L0))
-      ;; FIXME: Why is initialization of PI conditional on LONG-FLOAT?
-      ;; (ditto LG2, LN2, L2E, etc.)
-      (cold-set 'sb!vm::*fp-constant-pi* (number-to-core pi))
-      (cold-set 'sb!vm::*fp-constant-l2t* (number-to-core (log 10L0 2L0)))
-      (cold-set 'sb!vm::*fp-constant-l2e*
-           (number-to-core (log 2.718281828459045235360287471352662L0 2L0)))
-      (cold-set 'sb!vm::*fp-constant-lg2* (number-to-core (log 2L0 10L0)))
-      (cold-set 'sb!vm::*fp-constant-ln2*
-           (number-to-core
-            (log 2L0 2.718281828459045235360287471352662L0))))))
+    (cold-set 'sb!vm::*fp-constant-1f0* (number-to-core 1f0))))
 
 ;;; Make a cold list that can be used as the arg list to MAKE-PACKAGE in order
 ;;; to make a package that is similar to PKG.
                    (warm-symbol cadr-des))))
           (#.sb!vm:other-pointer-lowtag
            (warm-symbol des)))))
-    (unless (legal-fun-name-p result)
-      (error "not a legal function name: ~S" result))
+    (legal-fun-name-or-type-error result)
     result))
 
 (defun cold-fdefinition-object (cold-name &optional leave-fn-raw)
 ;;; The x86 port needs to store code fixups along with code objects if
 ;;; they are to be moved, so fixups for code objects in the dynamic
 ;;; heap need to be noted.
-#!+x86
+#!+(or x86 x86-64)
 (defvar *load-time-code-fixups*)
 
-#!+x86
+#!+(or x86 x86-64)
 (defun note-load-time-code-fixup (code-object offset value kind)
   ;; If CODE-OBJECT might be moved
   (when (= (gspace-identifier (descriptor-intuit-gspace code-object))
     (push (list code-object offset value kind) *load-time-code-fixups*))
   (values))
 
-#!+x86
+#!+(or x86 x86-64)
 (defun output-load-time-code-fixups ()
   (dolist (fixups *load-time-code-fixups*)
     (let ((code-object (first fixups))
                               (descriptor-gspace code-object))))
     (ecase +backend-fasl-file-implementation+
       ;; See CMU CL source for other formerly-supported architectures
-      ;; (and note that you have to rewrite them to use VECTOR-REF
-      ;; unstead of SAP-REF).
+      ;; (and note that you have to rewrite them to use BVREF-X
+      ;; instead of SAP-REF).
       (:alpha
         (ecase kind
          (:jmp-hint
                 (ldb (byte 8 0) value)
                 (bvref-8 gspace-bytes (1+ gspace-byte-offset))
                 (ldb (byte 8 8) value)))))
-      (:ppc
+      (:hppa
+       (ecase kind
+        (:load
+         (setf (bvref-32 gspace-bytes gspace-byte-offset)
+               (logior (ash (ldb (byte 11 0) value) 1)
+                       (logand (bvref-32 gspace-bytes gspace-byte-offset) 
+                               #xffffc000))))
+        (:load-short
+         (let ((low-bits (ldb (byte 11 0) value)))
+           (assert (<= 0 low-bits (1- (ash 1 4))))
+           (setf (bvref-32 gspace-bytes gspace-byte-offset)
+                 (logior (ash low-bits 17)
+                         (logand (bvref-32 gspace-bytes gspace-byte-offset)
+                                 #xffe0ffff)))))
+        (:hi
+         (setf (bvref-32 gspace-bytes gspace-byte-offset)
+               (logior (ash (ldb (byte 5 13) value) 16)
+                       (ash (ldb (byte 2 18) value) 14)
+                       (ash (ldb (byte 2 11) value) 12)
+                       (ash (ldb (byte 11 20) value) 1)
+                       (ldb (byte 1 31) value)
+                       (logand (bvref-32 gspace-bytes gspace-byte-offset)
+                               #xffe00000))))
+        (:branch
+         (let ((bits (ldb (byte 9 2) value)))
+           (assert (zerop (ldb (byte 2 0) value)))
+           (setf (bvref-32 gspace-bytes gspace-byte-offset)
+                 (logior (ash bits 3)
+                         (logand (bvref-32 gspace-bytes gspace-byte-offset)
+                                 #xffe0e002)))))))
+      (:mips
+       (ecase kind
+        (:jump
+         (assert (zerop (ash value -28)))
+         (setf (ldb (byte 26 0) 
+                    (bvref-32 gspace-bytes gspace-byte-offset))
+               (ash value -2)))
+        (:lui
+         (setf (bvref-32 gspace-bytes gspace-byte-offset)
+               (logior (mask-field (byte 16 16)
+                                   (bvref-32 gspace-bytes gspace-byte-offset))
+                       (+ (ash value -16)
+                          (if (logbitp 15 value) 1 0)))))
+        (:addi
+         (setf (bvref-32 gspace-bytes gspace-byte-offset)
+               (logior (mask-field (byte 16 16)
+                                   (bvref-32 gspace-bytes gspace-byte-offset))
+                       (ldb (byte 16 0) value))))))
+       (:ppc
        (ecase kind
          (:ba
           (setf (bvref-32 gspace-bytes gspace-byte-offset)
                (dpb (ldb (byte 10 0) value)
                     (byte 10 0)
                     (bvref-32 gspace-bytes gspace-byte-offset))))))
-      (:x86
-       (let* ((un-fixed-up (bvref-32 gspace-bytes
+      ((:x86 :x86-64)
+       (let* ((un-fixed-up (bvref-word gspace-bytes
                                               gspace-byte-offset))
              (code-object-start-addr (logandc2 (descriptor-bits code-object)
                                                sb!vm:lowtag-mask)))
            (let ((fixed-up (- (+ value un-fixed-up)
                               gspace-byte-address
                               gspace-byte-offset
-                              sb!vm:n-word-bytes))) ; length of CALL argument
+                              4))) ; "length of CALL argument"
              (setf (bvref-32 gspace-bytes gspace-byte-offset)
                    fixed-up)
              ;; Note relative fixups that point outside the code
                forms))
        (setf (svref *cold-fop-funs* ,code) #',fname))))
 
-(defmacro clone-cold-fop ((name &key (pushp t) (stackp t)) (small-name) &rest forms)
+(defmacro clone-cold-fop ((name &key (pushp t) (stackp t))
+                         (small-name)
+                         &rest forms)
   (aver (member pushp '(nil t)))
   (aver (member stackp '(nil t)))
   `(progn
 
 (define-cold-fop (fop-misc-trap) *unbound-marker*)
 
-(define-cold-fop (fop-character)
-  (make-character-descriptor (read-arg 3)))
 (define-cold-fop (fop-short-character)
   (make-character-descriptor (read-arg 1)))
 
 (defun cold-load-symbol (size package)
   (let ((string (make-string size)))
     (read-string-as-bytes *fasl-input-stream* string)
-    (cold-intern (intern string package) package)))
+    (cold-intern (intern string package))))
 
 (macrolet ((frob (name pname-len package-len)
             `(define-cold-fop (,name)
   (let* ((len (read-arg 4))
         (sizebits (read-arg 1))
         (type (case sizebits
+                (0 sb!vm:simple-array-nil-widetag)
                 (1 sb!vm:simple-bit-vector-widetag)
                 (2 sb!vm:simple-array-unsigned-byte-2-widetag)
                 (4 sb!vm:simple-array-unsigned-byte-4-widetag)
+                (7 (prog1 sb!vm:simple-array-unsigned-byte-7-widetag
+                     (setf sizebits 8)))
                 (8 sb!vm:simple-array-unsigned-byte-8-widetag)
+                (15 (prog1 sb!vm:simple-array-unsigned-byte-15-widetag
+                      (setf sizebits 16)))
                 (16 sb!vm:simple-array-unsigned-byte-16-widetag)
+                (31 (prog1 sb!vm:simple-array-unsigned-byte-31-widetag
+                      (setf sizebits 32)))
                 (32 sb!vm:simple-array-unsigned-byte-32-widetag)
                 (t (error "losing element size: ~W" sizebits))))
         (result (allocate-vector-object *dynamic* sizebits len type))
 (define-cold-number-fop fop-complex-single-float)
 (define-cold-number-fop fop-complex-double-float)
 
-#!+long-float
-(define-cold-fop (fop-long-float)
-  (ecase +backend-fasl-file-implementation+
-    (:x86 ; (which has 80-bit long-float format)
-     (prepare-for-fast-read-byte *fasl-input-stream*
-       (let* ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits
-                                           (1- sb!vm:long-float-size)
-                                           sb!vm:long-float-widetag))
-             (low-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (high-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (exp-bits (make-random-descriptor (fast-read-s-integer 2))))
-        (done-with-fast-read-byte)
-        (write-wordindexed des sb!vm:long-float-value-slot low-bits)
-        (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
-        (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) exp-bits)
-        des)))
-    ;; This was supported in CMU CL, but isn't currently supported in
-    ;; SBCL.
-    #+nil
-    (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
-     (prepare-for-fast-read-byte *fasl-input-stream*
-       (let* ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits
-                                           (1- sb!vm:long-float-size)
-                                           sb!vm:long-float-widetag))
-             (low-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (mid-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (high-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (exp-bits (make-random-descriptor (fast-read-s-integer 4))))
-        (done-with-fast-read-byte)
-        (write-wordindexed des sb!vm:long-float-value-slot exp-bits)
-        (write-wordindexed des (1+ sb!vm:long-float-value-slot) high-bits)
-        (write-wordindexed des (+ 2 sb!vm:long-float-value-slot) mid-bits)
-        (write-wordindexed des (+ 3 sb!vm:long-float-value-slot) low-bits)
-        des)))))
-
-#!+long-float
-(define-cold-fop (fop-complex-long-float)
-  (ecase +backend-fasl-file-implementation+
-    (:x86 ; (which has 80-bit long-float format)
-     (prepare-for-fast-read-byte *fasl-input-stream*
-       (let* ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits
-                                           (1- sb!vm:complex-long-float-size)
-                                           sb!vm:complex-long-float-widetag))
-             (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (real-exp-bits (make-random-descriptor (fast-read-s-integer 2)))
-             (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (imag-exp-bits (make-random-descriptor (fast-read-s-integer 2))))
-        (done-with-fast-read-byte)
-        (write-wordindexed des
-                           sb!vm:complex-long-float-real-slot
-                           real-low-bits)
-        (write-wordindexed des
-                           (1+ sb!vm:complex-long-float-real-slot)
-                           real-high-bits)
-        (write-wordindexed des
-                           (+ 2 sb!vm:complex-long-float-real-slot)
-                           real-exp-bits)
-        (write-wordindexed des
-                           sb!vm:complex-long-float-imag-slot
-                           imag-low-bits)
-        (write-wordindexed des
-                           (1+ sb!vm:complex-long-float-imag-slot)
-                           imag-high-bits)
-        (write-wordindexed des
-                           (+ 2 sb!vm:complex-long-float-imag-slot)
-                           imag-exp-bits)
-        des)))
-    ;; This was supported in CMU CL, but isn't currently supported in SBCL.
-    #+nil
-    (#.sb!c:sparc-fasl-file-implementation ; 128 bit long-float format
-     (prepare-for-fast-read-byte *fasl-input-stream*
-       (let* ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits
-                                           (1- sb!vm:complex-long-float-size)
-                                           sb!vm:complex-long-float-widetag))
-             (real-low-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (real-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (real-high-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (real-exp-bits (make-random-descriptor (fast-read-s-integer 4)))
-             (imag-low-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (imag-mid-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (imag-high-bits (make-random-descriptor (fast-read-u-integer 4)))
-             (imag-exp-bits (make-random-descriptor (fast-read-s-integer 4))))
-        (done-with-fast-read-byte)
-        (write-wordindexed des
-                           sb!vm:complex-long-float-real-slot
-                           real-exp-bits)
-        (write-wordindexed des
-                           (1+ sb!vm:complex-long-float-real-slot)
-                           real-high-bits)
-        (write-wordindexed des
-                           (+ 2 sb!vm:complex-long-float-real-slot)
-                           real-mid-bits)
-        (write-wordindexed des
-                           (+ 3 sb!vm:complex-long-float-real-slot)
-                           real-low-bits)
-        (write-wordindexed des
-                           sb!vm:complex-long-float-real-slot
-                           imag-exp-bits)
-        (write-wordindexed des
-                           (1+ sb!vm:complex-long-float-real-slot)
-                           imag-high-bits)
-        (write-wordindexed des
-                           (+ 2 sb!vm:complex-long-float-real-slot)
-                           imag-mid-bits)
-        (write-wordindexed des
-                           (+ 3 sb!vm:complex-long-float-real-slot)
-                           imag-low-bits)
-        des)))))
-
 (define-cold-fop (fop-ratio)
   (let ((den (pop-stack)))
     (number-pair-to-core (pop-stack) den sb!vm:ratio-widetag)))
   (and (>= (length string) (length tail))
        (string= string tail :start1 (- (length string) (length tail)))))
 
-(defun write-c-header ()
-
-  ;; writing beginning boilerplate
+(defun write-boilerplate ()
   (format t "/*~%")
   (dolist (line
           '("This is a machine-generated file. Please do not edit it by hand."
             "load and run 'core' files, which are basically programs"
             "in SBCL's own format."))
     (format t " * ~A~%" line))
-  (format t " */~%")
-  (terpri)
-  (format t "#ifndef _SBCL_H_~%#define _SBCL_H_~%")
-  (terpri)
+  (format t " */~%"))
 
+(defun write-config-h ()
   ;; propagating *SHEBANG-FEATURES* into C-level #define's
   (dolist (shebang-feature-name (sort (mapcar #'symbol-name
                                              sb-cold:*shebang-features*)
            "#define LISP_FEATURE_~A~%"
            (substitute #\_ #\- shebang-feature-name)))
   (terpri)
-
-  ;; writing miscellaneous constants
+  ;; and miscellaneous constants
   (format t "#define SBCL_CORE_VERSION_INTEGER ~D~%" sbcl-core-version-integer)
   (format t
          "#define SBCL_VERSION_STRING ~S~%"
          (sb!xc:lisp-implementation-version))
   (format t "#define CORE_MAGIC 0x~X~%" core-magic)
-  (terpri)
-
+  (format t "#ifndef LANGUAGE_ASSEMBLY~2%")
+  (format t "#define LISPOBJ(x) ((lispobj)x)~2%")
+  (format t "#else /* LANGUAGE_ASSEMBLY */~2%")
+  (format t "#define LISPOBJ(thing) thing~2%")
+  (format t "#endif /* LANGUAGE_ASSEMBLY */~2%")
+  (terpri))
+
+(defun write-constants-h ()
   ;; writing entire families of named constants 
   (let ((constants nil))
     (dolist (package-name '(;; Even in CMU CL, constants from VM
   ;; type things. We therefore don't export it, but instead do
   #!+sparc
   (when (boundp 'sb!vm::pseudo-atomic-trap)
-    (format t "#define PSEUDO_ATOMIC_TRAP ~D /* 0x~:*~X */~%" sb!vm::pseudo-atomic-trap)
+    (format t
+           "#define PSEUDO_ATOMIC_TRAP ~D /* 0x~:*~X */~%"
+           sb!vm::pseudo-atomic-trap)
     (terpri))
   ;; possibly this is another candidate for a rename (to
   ;; pseudo-atomic-trap-number or pseudo-atomic-magic-constant
   ;; [possibly applicable to other platforms])
 
-  (dolist (symbol '(sb!vm::float-traps-byte sb!vm::float-exceptions-byte sb!vm::float-sticky-bits sb!vm::float-rounding-mode))
+  (dolist (symbol '(sb!vm::float-traps-byte
+                   sb!vm::float-exceptions-byte
+                   sb!vm::float-sticky-bits
+                   sb!vm::float-rounding-mode))
     (format t "#define ~A_POSITION ~A /* ~:*0x~X */~%"
            (substitute #\_ #\- (symbol-name symbol))
            (sb!xc:byte-position (symbol-value symbol)))
     (format t "#define ~A_MASK 0x~X /* ~:*~A */~%"
            (substitute #\_ #\- (symbol-name symbol))
-           (sb!xc:mask-field (symbol-value symbol) -1)))
+           (sb!xc:mask-field (symbol-value symbol) -1))))
+
 
+
+(defun write-primitive-object (obj)  
   ;; writing primitive object layouts
-  (let ((structs (sort (copy-list sb!vm:*primitive-objects*) #'string<
-                      :key (lambda (obj)
-                             (symbol-name
-                              (sb!vm:primitive-object-name obj))))))
     (format t "#ifndef LANGUAGE_ASSEMBLY~2%")
-    (format t "#define LISPOBJ(x) ((lispobj)x)~2%")
-    (dolist (obj structs)
       (format t
              "struct ~A {~%"
              (substitute #\_ #\-
        (substitute #\_ #\-
                    (string-downcase (string (sb!vm:slot-name slot))))
        (sb!vm:slot-rest-p slot)))
-      (format t "};~2%"))
+  (format t "};~2%")
     (format t "#else /* LANGUAGE_ASSEMBLY */~2%")
-    (format t "#define LISPOBJ(thing) thing~2%")
-    (dolist (obj structs)
       (let ((name (sb!vm:primitive-object-name obj))
       (lowtag (eval (sb!vm:primitive-object-lowtag obj))))
        (when lowtag
                  (substitute #\_ #\- (string name))
                  (substitute #\_ #\- (string (sb!vm:slot-name slot)))
                  (- (* (sb!vm:slot-offset slot) sb!vm:n-word-bytes) lowtag)))
-       (terpri))))
+      (terpri)))
     (format t "#endif /* LANGUAGE_ASSEMBLY */~2%"))
 
-  ;; writing static symbol offsets
+(defun write-static-symbols ()
   (dolist (symbol (cons nil sb!vm:*static-symbols*))
     ;; FIXME: It would be nice to use longer names than NIL and
     ;; (particularly) T in #define statements.
              (+ sb!vm:static-space-start
                 sb!vm:n-word-bytes
                 sb!vm:other-pointer-lowtag
-                (if symbol (sb!vm:static-symbol-offset symbol) 0)))))
+                  (if symbol (sb!vm:static-symbol-offset symbol) 0))))))
 
-  ;; Voila.
-  (format t "~%#endif~%"))
 \f
 ;;;; writing map file
 
@@ -2876,7 +2819,18 @@ initially undefined function references:~2%")
 (defvar *core-file*)
 (defvar *data-page*)
 
+;;; magic numbers to identify entries in a core file
+;;;
+;;; (In case you were wondering: No, AFAIK there's no special magic about
+;;; these which requires them to be in the 38xx range. They're just
+;;; arbitrary words, tested not for being in a particular range but just
+;;; for equality. However, if you ever need to look at a .core file and
+;;; figure out what's going on, it's slightly convenient that they're
+;;; all in an easily recognizable range, and displacing the range away from
+;;; zero seems likely to reduce the chance that random garbage will be
+;;; misinterpreted as a .core file.)
 (defconstant version-core-entry-type-code 3860)
+(defconstant build-id-core-entry-type-code 3899)
 (defconstant new-directory-core-entry-type-code 3861)
 (defconstant initial-fun-core-entry-type-code 3863)
 (defconstant end-core-entry-type-code 3840)
@@ -2885,11 +2839,12 @@ initially undefined function references:~2%")
 (defun write-word (num)
   (ecase sb!c:*backend-byte-order*
     (:little-endian
-     (dotimes (i 4)
+     (dotimes (i sb!vm:n-word-bytes)
        (write-byte (ldb (byte 8 (* i 8)) num) *core-file*)))
     (:big-endian
-     (dotimes (i 4)
-       (write-byte (ldb (byte 8 (* (- 3 i) 8)) num) *core-file*))))
+     (dotimes (i sb!vm:n-word-bytes)
+       (write-byte (ldb (byte 8 (* (- (1- sb!vm:n-word-bytes) i) 8)) num) 
+                  *core-file*))))
   num)
 
 (defun advance-to-page ()
@@ -2971,6 +2926,22 @@ initially undefined function references:~2%")
       (write-word 3)
       (write-word sbcl-core-version-integer)
 
+      ;; Write the build ID.
+      (write-word build-id-core-entry-type-code)
+      (let ((build-id (with-open-file (s "output/build-id.tmp"
+                                        :direction :input)
+                       (read s))))
+       (declare (type simple-string build-id))
+       (/show build-id (length build-id))
+       ;; Write length of build ID record: BUILD-ID-CORE-ENTRY-TYPE-CODE
+       ;; word, this length word, and one word for each char of BUILD-ID.
+       (write-word (+ 2 (length build-id)))
+       (dovector (char build-id)
+         ;; (We write each character as a word in order to avoid
+         ;; having to think about word alignment issues in the
+         ;; sbcl-0.7.8 version of coreparse.c.)
+         (write-word (char-code char))))
+
       ;; Write the New Directory entry header.
       (write-word new-directory-core-entry-type-code)
       (write-word 17) ; length = (5 words/space) * 3 spaces + 2 for header.
@@ -3028,7 +2999,7 @@ initially undefined function references:~2%")
                      symbol-table-file-name
                      core-file-name
                      map-file-name
-                     c-header-file-name)
+                     c-header-dir-name)
 
   (when (and core-file-name
             (not symbol-table-file-name))
@@ -3042,8 +3013,7 @@ initially undefined function references:~2%")
            ;; we're not e.g. also creating a header file when we
            ;; create a core.
            (format nil "creating core ~S" core-file-name)
-           (format nil "creating header ~S" c-header-file-name)))
-
+           (format nil "creating headers in ~S" c-header-dir-name)))
   (let* ((*cold-foreign-symbol-table* (make-hash-table :test 'equal)))
 
     ;; Read symbol table, if any.
@@ -3058,8 +3028,7 @@ initially undefined function references:~2%")
             (when filename
               (ensure-directories-exist filename :verbose t))))
       (frob core-file-name)
-      (frob map-file-name)
-      (frob c-header-file-name))
+      (frob map-file-name))
 
     ;; (This shouldn't matter in normal use, since GENESIS normally
     ;; only runs once in any given Lisp image, but it could reduce
@@ -3129,6 +3098,7 @@ initially undefined function references:~2%")
        (let ((package (find-package (sb-cold:package-data-name pd))))
          (labels (;; Call FN on every node of the TREE.
                   (mapc-on-tree (fn tree)
+                                 (declare (type function fn))
                                 (typecase tree
                                   (cons (mapc-on-tree fn (car tree))
                                         (mapc-on-tree fn (cdr tree)))
@@ -3185,15 +3155,42 @@ initially undefined function references:~2%")
       ;; lexical variable, and it's annoying to have WRITE-MAP (to
       ;; *STANDARD-OUTPUT*) not be parallel to WRITE-INITIAL-CORE-FILE
       ;; (to a stream explicitly passed as an argument).
+      (macrolet ((out-to (name &body body)
+                  `(let ((fn (format nil "~A/~A.h" c-header-dir-name ,name)))
+                    (ensure-directories-exist fn)
+                    (with-open-file (*standard-output* fn  
+                                     :if-exists :supersede :direction :output)
+                      (write-boilerplate)
+                      (let ((n (substitute #\_ #\- (string-upcase ,name))))
+                        (format 
+                         t
+                         "#ifndef SBCL_GENESIS_~A~%#define SBCL_GENESIS_~A 1~%"
+                         n n))
+                      ,@body
+                      (format t
+                       "#endif /* SBCL_GENESIS_~A */~%"
+                       (string-upcase ,name))))))
       (when map-file-name
        (with-open-file (*standard-output* map-file-name
                                           :direction :output
                                           :if-exists :supersede)
          (write-map)))
-      (when c-header-file-name
-       (with-open-file (*standard-output* c-header-file-name
-                                          :direction :output
-                                          :if-exists :supersede)
-         (write-c-header)))
+       (out-to "config" (write-config-h))
+       (out-to "constants" (write-constants-h))
+       (let ((structs (sort (copy-list sb!vm:*primitive-objects*) #'string<
+                            :key (lambda (obj)
+                                   (symbol-name
+                                    (sb!vm:primitive-object-name obj))))))
+         (dolist (obj structs)
+           (out-to
+            (string-downcase (string (sb!vm:primitive-object-name obj)))
+            (write-primitive-object obj)))
+         (out-to "primitive-objects"
+                 (dolist (obj structs)
+                   (format t "~&#include \"~A.h\"~%"
+                           (string-downcase 
+                            (string (sb!vm:primitive-object-name obj)))))))
+       (out-to "static-symbols" (write-static-symbols))
+       
       (when core-file-name
-       (write-initial-core-file core-file-name)))))
+         (write-initial-core-file core-file-name))))))