X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fgeneric%2Fobjdef.lisp;h=986983748392df61232463a4866098ba344644d9;hb=7306e23c5a4687bef98fdfb3459aaf15fe79d5ca;hp=a8064ad530e48da6ce1936ed0ec3cfee6da72ac2;hpb=5f338d314224411587a7cac218ea320bc982f19f;p=sbcl.git diff --git a/src/compiler/generic/objdef.lisp b/src/compiler/generic/objdef.lisp index a8064ad..9869837 100644 --- a/src/compiler/generic/objdef.lisp +++ b/src/compiler/generic/objdef.lisp @@ -11,214 +11,273 @@ (in-package "SB!VM") -(file-comment - "$Header$") +;;;; KLUDGE: The primitive objects here may look like self-contained +;;;; definitions, but in general they're not. In particular, if you +;;;; try to add a slot to them, beware of the following: +;;;; * (mysterious crashes which occur after changing the length +;;;; of SIMPLE-FUN, just adding a new slot not even doing anything +;;;; with it, still dunno why) +;;;; * The GC scavenging code (and for all I know other GC code too) +;;;; is not automatically generated from these layouts, but instead +;;;; was hand-written to correspond to them. The offsets are +;;;; automatically propagated into the GC scavenging code, but the +;;;; existence of slots, and whether they should be scavenged, is +;;;; not automatically propagated. Thus e.g. if you add a +;;;; SIMPLE-FUN-DEBUG-INFO slot holding a tagged object which needs +;;;; to be GCed, you need to tweak scav_code_header() and +;;;; verify_space() in gencgc.c, and the corresponding code in gc.c. +;;;; * The src/runtime/print.c code (used by LDB) is implemented +;;;; using hand-written lists of slot names, which aren't automatically +;;;; generated from the code in this file. +;;;; * Various code (e.g. STATIC-FSET in genesis.lisp) is hard-wired +;;;; to know the name of the last slot of the object the code works +;;;; with, and implicitly to know that the last slot is special (being +;;;; the beginning of an arbitrary-length sequence of bytes following +;;;; the fixed-layout slots). +;;;; -- WHN 2001-12-29 ;;;; the primitive objects themselves -(define-primitive-object (cons :lowtag list-pointer-type - :alloc-trans cons) - (car :ref-trans car :set-trans sb!c::%rplaca :init :arg) - (cdr :ref-trans cdr :set-trans sb!c::%rplacd :init :arg)) +(define-primitive-object (cons :lowtag list-pointer-lowtag + :alloc-trans cons) + (car :ref-trans car :set-trans sb!c::%rplaca :init :arg + :cas-trans %compare-and-swap-car) + (cdr :ref-trans cdr :set-trans sb!c::%rplacd :init :arg + :cas-trans %compare-and-swap-cdr)) -(define-primitive-object (instance :lowtag instance-pointer-type - :header instance-header-type - :alloc-trans %make-instance) +(define-primitive-object (instance :lowtag instance-pointer-lowtag + :widetag instance-header-widetag + :alloc-trans %make-instance) (slots :rest-p t)) -(define-primitive-object (bignum :lowtag other-pointer-type - :header bignum-type - :alloc-trans sb!bignum::%allocate-bignum) +(define-primitive-object (bignum :lowtag other-pointer-lowtag + :widetag bignum-widetag + :alloc-trans sb!bignum::%allocate-bignum) (digits :rest-p t :c-type #!-alpha "long" #!+alpha "u32")) (define-primitive-object (ratio :type ratio - :lowtag other-pointer-type - :header ratio-type - :alloc-trans %make-ratio) + :lowtag other-pointer-lowtag + :widetag ratio-widetag + :alloc-trans %make-ratio) (numerator :type integer - :ref-known (flushable movable) - :ref-trans %numerator - :init :arg) + :ref-known (flushable movable) + :ref-trans %numerator + :init :arg) (denominator :type integer - :ref-known (flushable movable) - :ref-trans %denominator - :init :arg)) + :ref-known (flushable movable) + :ref-trans %denominator + :init :arg)) -(define-primitive-object (single-float :lowtag other-pointer-type - :header single-float-type) +#!+#.(cl:if (cl:= sb!vm:n-word-bits 32) '(and) '(or)) +(define-primitive-object (single-float :lowtag other-pointer-lowtag + :widetag single-float-widetag) (value :c-type "float")) -(define-primitive-object (double-float :lowtag other-pointer-type - :header double-float-type) - (filler) - (value :c-type "double" :length 2)) +(define-primitive-object (double-float :lowtag other-pointer-lowtag + :widetag double-float-widetag) + #!-x86-64 (filler) + (value :c-type "double" :length #!-x86-64 2 #!+x86-64 1)) #!+long-float -(define-primitive-object (long-float :lowtag other-pointer-type - :header long-float-type) +(define-primitive-object (long-float :lowtag other-pointer-lowtag + :widetag long-float-widetag) #!+sparc (filler) (value :c-type "long double" :length #!+x86 3 #!+sparc 4)) (define-primitive-object (complex :type complex - :lowtag other-pointer-type - :header complex-type - :alloc-trans %make-complex) + :lowtag other-pointer-lowtag + :widetag complex-widetag + :alloc-trans %make-complex) (real :type real - :ref-known (flushable movable) - :ref-trans %realpart - :init :arg) + :ref-known (flushable movable) + :ref-trans %realpart + :init :arg) (imag :type real - :ref-known (flushable movable) - :ref-trans %imagpart - :init :arg)) - -(define-primitive-object (array :lowtag other-pointer-type - :header t) + :ref-known (flushable movable) + :ref-trans %imagpart + :init :arg)) + +(define-primitive-object (array :lowtag other-pointer-lowtag + :widetag t) + ;; FILL-POINTER of an ARRAY is in the same place as LENGTH of a + ;; VECTOR -- see SHRINK-VECTOR. (fill-pointer :type index - :ref-trans %array-fill-pointer - :ref-known (flushable foldable) - :set-trans (setf %array-fill-pointer) - :set-known (unsafe)) + :ref-trans %array-fill-pointer + :ref-known (flushable foldable) + :set-trans (setf %array-fill-pointer) + :set-known (unsafe)) (fill-pointer-p :type (member t nil) - :ref-trans %array-fill-pointer-p - :ref-known (flushable foldable) - :set-trans (setf %array-fill-pointer-p) - :set-known (unsafe)) + :ref-trans %array-fill-pointer-p + :ref-known (flushable foldable) + :set-trans (setf %array-fill-pointer-p) + :set-known (unsafe)) (elements :type index - :ref-trans %array-available-elements - :ref-known (flushable foldable) - :set-trans (setf %array-available-elements) - :set-known (unsafe)) + :ref-trans %array-available-elements + :ref-known (flushable foldable) + :set-trans (setf %array-available-elements) + :set-known (unsafe)) (data :type array - :ref-trans %array-data-vector - :ref-known (flushable foldable) - :set-trans (setf %array-data-vector) - :set-known (unsafe)) + :ref-trans %array-data-vector + :ref-known (flushable foldable) + :set-trans (setf %array-data-vector) + :set-known (unsafe)) (displacement :type (or index null) - :ref-trans %array-displacement - :ref-known (flushable foldable) - :set-trans (setf %array-displacement) - :set-known (unsafe)) + :ref-trans %array-displacement + :ref-known (flushable foldable) + :set-trans (setf %array-displacement) + :set-known (unsafe)) (displaced-p :type (member t nil) - :ref-trans %array-displaced-p - :ref-known (flushable foldable) - :set-trans (setf %array-displaced-p) - :set-known (unsafe)) + :ref-trans %array-displaced-p + :ref-known (flushable foldable) + :set-trans (setf %array-displaced-p) + :set-known (unsafe)) + (displaced-from :type list + :ref-trans %array-displaced-from + :ref-known (flushable) + :set-trans (setf %array-displaced-from) + :set-known (unsafe) + :cas-trans %compare-and-swap-array-displaced-from + :cas-known (unsafe)) (dimensions :rest-p t)) (define-primitive-object (vector :type vector - :lowtag other-pointer-type - :header t) + :lowtag other-pointer-lowtag + :widetag t) + ;; FILL-POINTER of an ARRAY is in the same place as LENGTH of a + ;; VECTOR -- see SHRINK-VECTOR. (length :ref-trans sb!c::vector-length - :type index) + :type index) (data :rest-p t :c-type #!-alpha "unsigned long" #!+alpha "u32")) (define-primitive-object (code :type code-component - :lowtag other-pointer-type - :header t) + :lowtag other-pointer-lowtag + :widetag t) (code-size :type index - :ref-known (flushable movable) - :ref-trans %code-code-size) + :ref-known (flushable movable) + :ref-trans %code-code-size) (entry-points :type (or function null) - :ref-known (flushable) - :ref-trans %code-entry-points - :set-known (unsafe) - :set-trans (setf %code-entry-points)) + :ref-known (flushable) + :ref-trans %code-entry-points + :set-known (unsafe) + :set-trans (setf %code-entry-points)) (debug-info :type t - :ref-known (flushable) - :ref-trans %code-debug-info - :set-known (unsafe) - :set-trans (setf %code-debug-info)) + :ref-known (flushable) + :ref-trans %code-debug-info + :set-known (unsafe) + :set-trans (setf %code-debug-info)) (trace-table-offset) (constants :rest-p t)) (define-primitive-object (fdefn :type fdefn - :lowtag other-pointer-type - :header fdefn-type) + :lowtag other-pointer-lowtag + :widetag fdefn-widetag) (name :ref-trans fdefn-name) - (function :type (or function null) :ref-trans fdefn-function) + (fun :type (or function null) :ref-trans fdefn-fun) (raw-addr :c-type #!-alpha "char *" #!+alpha "u32")) -(define-primitive-object (function :type function - :lowtag function-pointer-type - :header function-header-type) - #!-gengc (self :ref-trans %function-self :set-trans (setf %function-self)) - #!+gengc (entry-point :c-type "char *") +;;; a simple function (as opposed to hairier things like closures +;;; which are also subtypes of Common Lisp's FUNCTION type) +(define-primitive-object (simple-fun :type function + :lowtag fun-pointer-lowtag + :widetag simple-fun-header-widetag) + #!-(or x86 x86-64) (self :ref-trans %simple-fun-self + :set-trans (setf %simple-fun-self)) + #!+(or x86 x86-64) (self + ;; KLUDGE: There's no :SET-KNOWN, :SET-TRANS, :REF-KNOWN, or + ;; :REF-TRANS here in this case. Instead, there's separate + ;; DEFKNOWN/DEFINE-VOP/DEFTRANSFORM stuff in + ;; compiler/x86/system.lisp to define and declare them by + ;; hand. I don't know why this is, but that's (basically) + ;; the way it was done in CMU CL, and it works. (It's not + ;; exactly the same way it was done in CMU CL in that CMU + ;; CL's allows duplicate DEFKNOWNs, blithely overwriting any + ;; previous data associated with the previous DEFKNOWN, and + ;; that property was used to mask the definitions here. In + ;; SBCL as of 0.6.12.64 that's not allowed -- too confusing! + ;; -- so we have to explicitly suppress the DEFKNOWNish + ;; stuff here in order to allow this old hack to work in the + ;; new world. -- WHN 2001-08-82 + ) (next :type (or function null) - :ref-known (flushable) - :ref-trans %function-next - :set-known (unsafe) - :set-trans (setf %function-next)) + :ref-known (flushable) + :ref-trans %simple-fun-next + :set-known (unsafe) + :set-trans (setf %simple-fun-next)) (name :ref-known (flushable) - :ref-trans %function-name - :set-known (unsafe) - :set-trans (setf %function-name)) - (arglist :ref-known (flushable) - :ref-trans %function-arglist - :set-known (unsafe) - :set-trans (setf %function-arglist)) + :ref-trans %simple-fun-name + :set-known (unsafe) + :set-trans (setf %simple-fun-name)) + (arglist :type list + :ref-known (flushable) + :ref-trans %simple-fun-arglist + :set-known (unsafe) + :set-trans (setf %simple-fun-arglist)) (type :ref-known (flushable) - :ref-trans %function-type - :set-known (unsafe) - :set-trans (setf %function-type)) + :ref-trans %simple-fun-type + :set-known (unsafe) + :set-trans (setf %simple-fun-type)) + (xrefs :init :null + :ref-trans %simple-fun-xrefs + :ref-known (flushable) + :set-trans (setf %simple-fun-xrefs) + :set-known ()) + ;; the SB!C::DEBUG-FUN object corresponding to this object, or NIL for none + #+nil ; FIXME: doesn't work (gotcha, lowly maintenoid!) See notes on bug 137. + (debug-fun :ref-known (flushable) + :ref-trans %simple-fun-debug-fun + :set-known (unsafe) + :set-trans (setf %simple-fun-debug-fun)) (code :rest-p t :c-type "unsigned char")) -#!-gengc -(define-primitive-object (return-pc :lowtag other-pointer-type :header t) +(define-primitive-object (return-pc :lowtag other-pointer-lowtag :widetag t) (return-point :c-type "unsigned char" :rest-p t)) -(define-primitive-object (closure :lowtag function-pointer-type - :header closure-header-type) - #!-gengc (function :init :arg :ref-trans %closure-function) - #!+gengc (entry-point :c-type "char *") +(define-primitive-object (closure :lowtag fun-pointer-lowtag + :widetag closure-header-widetag) + (fun :init :arg :ref-trans %closure-fun) (info :rest-p t)) (define-primitive-object (funcallable-instance - :lowtag function-pointer-type - :header funcallable-instance-header-type - :alloc-trans %make-funcallable-instance) - #!-gengc - (function - :ref-known (flushable) :ref-trans %funcallable-instance-function - :set-known (unsafe) :set-trans (setf %funcallable-instance-function)) - #!+gengc (entry-point :c-type "char *") - (lexenv :ref-known (flushable) :ref-trans %funcallable-instance-lexenv - :set-known (unsafe) :set-trans (setf %funcallable-instance-lexenv)) - (layout :init :arg - :ref-known (flushable) :ref-trans %funcallable-instance-layout - :set-known (unsafe) :set-trans (setf %funcallable-instance-layout)) + :lowtag fun-pointer-lowtag + :widetag funcallable-instance-header-widetag + :alloc-trans %make-funcallable-instance) + (trampoline :init :funcallable-instance-tramp) + (function :ref-known (flushable) :ref-trans %funcallable-instance-function + :set-known (unsafe) :set-trans (setf %funcallable-instance-function)) (info :rest-p t)) -(define-primitive-object (value-cell :lowtag other-pointer-type - :header value-cell-header-type - :alloc-trans make-value-cell) +(define-primitive-object (value-cell :lowtag other-pointer-lowtag + :widetag value-cell-header-widetag + ;; FIXME: We also have an explicit VOP + ;; for this. Is this needed as well? + :alloc-trans make-value-cell) (value :set-trans value-cell-set - :set-known (unsafe) - :ref-trans value-cell-ref - :ref-known (flushable) - :init :arg)) + :set-known (unsafe) + :ref-trans value-cell-ref + :ref-known (flushable) + :init :arg)) #!+alpha -(define-primitive-object (sap :lowtag other-pointer-type - :header sap-type) +(define-primitive-object (sap :lowtag other-pointer-lowtag + :widetag sap-widetag) (padding) (pointer :c-type "char *" :length 2)) #!-alpha -(define-primitive-object (sap :lowtag other-pointer-type - :header sap-type) +(define-primitive-object (sap :lowtag other-pointer-lowtag + :widetag sap-widetag) (pointer :c-type "char *")) (define-primitive-object (weak-pointer :type weak-pointer - :lowtag other-pointer-type - :header weak-pointer-type - :alloc-trans make-weak-pointer) + :lowtag other-pointer-lowtag + :widetag weak-pointer-widetag + :alloc-trans make-weak-pointer) (value :ref-trans sb!c::%weak-pointer-value :ref-known (flushable) - :init :arg) + :init :arg) (broken :type (member t nil) - :ref-trans sb!c::%weak-pointer-broken :ref-known (flushable) - :init :null) + :ref-trans sb!c::%weak-pointer-broken :ref-known (flushable) + :init :null) (next :c-type #!-alpha "struct weak_pointer *" #!+alpha "u32")) ;;;; other non-heap data blocks @@ -230,72 +289,131 @@ (define-primitive-object (unwind-block) (current-uwp :c-type #!-alpha "struct unwind_block *" #!+alpha "u32") (current-cont :c-type #!-alpha "lispobj *" #!+alpha "u32") - #!-x86 current-code - entry-pc) + #!-(or x86 x86-64) current-code + entry-pc + #!+win32 next-seh-frame + #!+win32 seh-frame-handler) (define-primitive-object (catch-block) (current-uwp :c-type #!-alpha "struct unwind_block *" #!+alpha "u32") (current-cont :c-type #!-alpha "lispobj *" #!+alpha "u32") - #!-x86 current-code + #!-(or x86 x86-64) current-code entry-pc + #!+win32 next-seh-frame + #!+win32 seh-frame-handler tag - (previous-catch :c-type #!-alpha "struct catch_block *" #!+alpha "u32") - size) + (previous-catch :c-type #!-alpha "struct catch_block *" #!+alpha "u32")) ;;; (For an explanation of this, see the comments at the definition of ;;; KLUDGE-NONDETERMINISTIC-CATCH-BLOCK-SIZE.) -(assert (= sb!vm::kludge-nondeterministic-catch-block-size catch-block-size)) +(aver (= kludge-nondeterministic-catch-block-size catch-block-size)) ;;;; symbols -#!+gengc -(defknown %make-symbol (index simple-string) symbol - (flushable movable)) - -#!+gengc -(defknown symbol-hash (symbol) index - (flushable movable)) - -#!+x86 -(defknown symbol-hash (symbol) (integer 0 #.*target-most-positive-fixnum*) - (flushable movable)) - -(define-primitive-object (symbol :lowtag other-pointer-type - :header symbol-header-type - #!-x86 :alloc-trans - #!-(or gengc x86) make-symbol - #!+gengc %make-symbol) - (value :set-trans %set-symbol-value - :init :unbound) - #!-(or gengc x86) unused - #!+gengc (hash :init :arg) - #!+x86 (hash) +(define-primitive-object (symbol :lowtag other-pointer-lowtag + :widetag symbol-header-widetag + :alloc-trans %make-symbol) + + ;; Beware when changing this definition. NIL-the-symbol is defined + ;; using this layout, and NIL-the-end-of-list-marker is the cons + ;; ( NIL . NIL ), living in the first two slots of NIL-the-symbol + ;; (conses have no header). Careful selection of lowtags ensures + ;; that the same pointer can be used for both purposes: + ;; OTHER-POINTER-LOWTAG is 7, LIST-POINTER-LOWTAG is 3, so if you + ;; subtract 3 from (SB-KERNEL:GET-LISP-OBJ-ADDRESS 'NIL) you get the + ;; first data slot, and if you subtract 7 you get a symbol header. + + ;; also the CAR of NIL-as-end-of-list + (value :init :unbound :ref-known (flushable) :ref-trans symbol-global-value) + ;; also the CDR of NIL-as-end-of-list. Its reffer needs special + ;; care for this reason, as hash values must be fixnums. + (hash :set-trans %set-symbol-hash) + (plist :ref-trans symbol-plist - :set-trans %set-symbol-plist - :init :null) + :set-trans %set-symbol-plist + :cas-trans %compare-and-swap-symbol-plist + :type list + :init :null) (name :ref-trans symbol-name :init :arg) (package :ref-trans symbol-package - :set-trans %set-symbol-package - :init :null)) + :set-trans %set-symbol-package + :init :null) + #!+sb-thread (tls-index :ref-known (flushable) :ref-trans symbol-tls-index)) (define-primitive-object (complex-single-float - :lowtag other-pointer-type - :header complex-single-float-type) + :lowtag other-pointer-lowtag + :widetag complex-single-float-widetag) (real :c-type "float") (imag :c-type "float")) (define-primitive-object (complex-double-float - :lowtag other-pointer-type - :header complex-double-float-type) - (filler) - (real :c-type "double" :length 2) - (imag :c-type "double" :length 2)) - -#!+long-float -(define-primitive-object (complex-long-float - :lowtag other-pointer-type - :header complex-long-float-type) - #!+sparc (filler) - (real :c-type "long double" :length #!+x86 3 #!+sparc 4) - (imag :c-type "long double" :length #!+x86 3 #!+sparc 4)) - + :lowtag other-pointer-lowtag + :widetag complex-double-float-widetag) + #!-x86-64 (filler) + (real :c-type "double" :length #!-x86-64 2 #!+x86-64 1) + (imag :c-type "double" :length #!-x86-64 2 #!+x86-64 1)) + +#!+(and sb-lutex sb-thread) +(define-primitive-object (lutex + :lowtag other-pointer-lowtag + :widetag lutex-widetag + :alloc-trans %make-lutex) + (gen :c-type "long" :length 1) + (live :c-type "long" :length 1) + (next :c-type "struct lutex *" :length 1) + (prev :c-type "struct lutex *" :length 1) + (mutex :c-type "pthread_mutex_t *" + :length 1) + (mutexattr :c-type "pthread_mutexattr_t *" + :length 1) + (condition-variable :c-type "pthread_cond_t *" + :length 1)) + +;;; this isn't actually a lisp object at all, it's a c structure that lives +;;; in c-land. However, we need sight of so many parts of it from Lisp that +;;; it makes sense to define it here anyway, so that the GENESIS machinery +;;; can take care of maintaining Lisp and C versions. +;;; Hence the even-fixnum lowtag just so we don't get odd(sic) numbers +;;; added to the slot offsets +(define-primitive-object (thread :lowtag even-fixnum-lowtag) + ;; no_tls_value_marker is borrowed very briefly at thread startup to + ;; pass the address of initial-function into new_thread_trampoline. + ;; tls[0] = NO_TLS_VALUE_MARKER_WIDETAG because a the tls index slot + ;; of a symbol is initialized to zero + (no-tls-value-marker) + (os-thread :c-type "os_thread_t") + ;; This is the original address at which the memory was allocated, + ;; which may have different alignment then what we prefer to use. + ;; Kept here so that when the thread dies we can release the whole + ;; memory we reserved. + (os-address :c-type "void *" :length #!+alpha 2 #!-alpha 1) + #!+sb-thread + (os-attr :c-type "pthread_attr_t *" :length #!+alpha 2 #!-alpha 1) + #!+sb-thread + (state-lock :c-type "pthread_mutex_t *" :length #!+alpha 2 #!-alpha 1) + #!+sb-thread + (state-cond :c-type "pthread_cond_t *" :length #!+alpha 2 #!-alpha 1) + (binding-stack-start :c-type "lispobj *" :length #!+alpha 2 #!-alpha 1) + (binding-stack-pointer :c-type "lispobj *" :length #!+alpha 2 #!-alpha 1) + (control-stack-start :c-type "lispobj *" :length #!+alpha 2 #!-alpha 1) + (control-stack-end :c-type "lispobj *" :length #!+alpha 2 #!-alpha 1) + (alien-stack-start :c-type "lispobj *" :length #!+alpha 2 #!-alpha 1) + (alien-stack-pointer :c-type "lispobj *" :length #!+alpha 2 #!-alpha 1) + #!+gencgc (alloc-region :c-type "struct alloc_region" :length 5) + (this :c-type "struct thread *" :length #!+alpha 2 #!-alpha 1) + (prev :c-type "struct thread *" :length #!+alpha 2 #!-alpha 1) + (next :c-type "struct thread *" :length #!+alpha 2 #!-alpha 1) + ;; starting, running, suspended, dead + (state :c-type "lispobj") + (tls-cookie) ; on x86, the LDT index + #!+(or x86 x86-64) (pseudo-atomic-bits) + (interrupt-data :c-type "struct interrupt_data *" + :length #!+alpha 2 #!-alpha 1) + (stepping) + ;; KLUDGE: On alpha, until STEPPING we have been lucky and the 32 + ;; bit slots came in pairs. However the C compiler will align + ;; interrupt_contexts on a double word boundary. This logic should + ;; be handled by DEFINE-PRIMITIVE-OBJECT. + #!+alpha + (padding) + (interrupt-contexts :c-type "os_context_t *" :rest-p t))