;;;; files for more information.
(in-package "SB!VM")
-
-(file-comment
- "$Header$")
\f
;;;; OS-CONTEXT-T
(defun machine-type ()
#!+sb-doc
- "Returns a string describing the type of the local machine."
+ "Return a string describing the type of the local machine."
"X86")
(defun machine-version ()
#!+sb-doc
- "Returns a string describing the version of the local machine."
+ "Return a string describing the version of the local machine."
"X86")
\f
;;;; :CODE-OBJECT fixups
(defun fixup-code-object (code offset fixup kind)
(declare (type index offset))
(flet ((add-fixup (code offset)
- ;; Although this could check for and ignore fixups for code
- ;; objects in the read-only and static spaces, this should
- ;; only be the case when *enable-dynamic-space-code* is
- ;; True.
- (when sb!impl::*enable-dynamic-space-code*
- (incf *num-fixups*)
- (let ((fixups (code-header-ref code code-constants-offset)))
- (cond ((typep fixups '(simple-array (unsigned-byte 32) (*)))
- (let ((new-fixups
- (adjust-array fixups (1+ (length fixups))
- :element-type '(unsigned-byte 32))))
- (setf (aref new-fixups (length fixups)) offset)
- (setf (code-header-ref code code-constants-offset)
- new-fixups)))
- (t
- (unless (or (eq (get-type fixups)
- sb!vm:unbound-marker-type)
- (zerop fixups))
- (format t "** Init. code FU = ~S~%" fixups)) ; FIXME
+ ;; (We check for and ignore fixups for code objects in the
+ ;; read-only and static spaces. (In the old CMU CL code
+ ;; this check was conditional on *ENABLE-DYNAMIC-SPACE-CODE*,
+ ;; but in SBCL relocatable dynamic space code is always in
+ ;; use, so we always do the check.)
+ (incf *num-fixups*)
+ (let ((fixups (code-header-ref code code-constants-offset)))
+ (cond ((typep fixups '(simple-array (unsigned-byte 32) (*)))
+ (let ((new-fixups
+ (adjust-array fixups (1+ (length fixups))
+ :element-type '(unsigned-byte 32))))
+ (setf (aref new-fixups (length fixups)) offset)
(setf (code-header-ref code code-constants-offset)
- (make-specializable-array
- 1
- :element-type '(unsigned-byte 32)
- :initial-element offset))))))))
+ new-fixups)))
+ (t
+ (unless (or (eq (get-type fixups)
+ sb!vm:unbound-marker-widetag)
+ (zerop fixups))
+ (format t "** Init. code FU = ~S~%" fixups)) ; FIXME
+ (setf (code-header-ref code code-constants-offset)
+ (make-specializable-array
+ 1
+ :element-type '(unsigned-byte 32)
+ :initial-element offset)))))))
(sb!sys:without-gcing
(let* ((sap (truly-the system-area-pointer
(sb!kernel:code-instructions code)))
;;; load time instead of in GENESIS. It's probably simple, I just haven't
;;; figured it out, or found it written down anywhere. -- WHN 19990908
#!+gencgc
-(defun do-load-time-code-fixup (code offset fixup kind)
+(defun !do-load-time-code-fixup (code offset fixup kind)
(flet ((add-load-time-code-fixup (code offset)
(let ((fixups (code-header-ref code sb!vm:code-constants-offset)))
(cond ((typep fixups '(simple-array (unsigned-byte 32) (*)))
(setf (code-header-ref code sb!vm:code-constants-offset)
new-fixups)))
(t
- ;; FIXME: This doesn't look like production code, and
- ;; should be a fatal error, not just a print.
(unless (or (eq (get-type fixups)
- sb!vm:unbound-marker-type)
+ sb!vm:unbound-marker-widetag)
(zerop fixups))
- (%primitive print "** Init. code FU"))
+ (sb!impl::!cold-lose "Argh! can't process fixup"))
(setf (code-header-ref code sb!vm:code-constants-offset)
(make-specializable-array
1
;;;; and internal error handling) the extra runtime cost should be
;;;; negligible.
-(def-alien-routine ("os_context_pc_addr" context-pc-addr) (* int)
+(def-alien-routine ("os_context_pc_addr" context-pc-addr) (* unsigned-int)
+ ;; (Note: Just as in CONTEXT-REGISTER-ADDR, we intentionally use an
+ ;; 'unsigned *' interpretation for the 32-bit word passed to us by
+ ;; the C code, even though the C code may think it's an 'int *'.)
(context (* os-context-t)))
(defun context-pc (context)
(declare (type (alien (* os-context-t)) context))
- (int-sap (deref (context-pc-addr context))))
+ (let ((addr (context-pc-addr context)))
+ (declare (type (alien (* unsigned-int)) addr))
+ (int-sap (deref addr))))
-(def-alien-routine ("os_context_register_addr" context-register-addr) (* int)
+(def-alien-routine ("os_context_register_addr" context-register-addr)
+ (* unsigned-int)
+ ;; (Note the mismatch here between the 'int *' value that the C code
+ ;; may think it's giving us and the 'unsigned *' value that we
+ ;; receive. It's intentional: the C header files may think of
+ ;; register values as signed, but the CMU CL code tends to think of
+ ;; register values as unsigned, and might get bewildered if we ask
+ ;; it to work with signed values.)
(context (* os-context-t))
(index int))
(defun context-register (context index)
(declare (type (alien (* os-context-t)) context))
- (deref (context-register-addr context index)))
+ (let ((addr (context-register-addr context index)))
+ (declare (type (alien (* unsigned-int)) addr))
+ (deref addr)))
(defun %set-context-register (context index new)
(declare (type (alien (* os-context-t)) context))
- (setf (deref (context-register-addr context index))
- new))
+ (let ((addr (context-register-addr context index)))
+ (declare (type (alien (* unsigned-int)) addr))
+ (setf (deref addr) new)))
-;;; Like CONTEXT-REGISTER, but returns the value of a float register.
-;;; FORMAT is the type of float to return.
+;;; This is like CONTEXT-REGISTER, but returns the value of a float
+;;; register. FORMAT is the type of float to return.
;;;
;;; As of sbcl-0.6.7, there is no working code which calls this code,
;;; so it's stubbed out. Someday, in order to make the debugger work
;;; better, it may be necessary to unstubify it.
(defun context-float-register (context index format)
- (declare (ignore context index format))
+ (declare (ignore context index))
(warn "stub CONTEXT-FLOAT-REGISTER")
- (coerce 0.0 'format))
+ (coerce 0.0 format))
(defun %set-context-float-register (context index format new-value)
- (declare (ignore context index format))
+ (declare (ignore context index))
(warn "stub %SET-CONTEXT-FLOAT-REGISTER")
- (coerce new-value 'format))
+ (coerce new-value format))
;;; Given a signal context, return the floating point modes word in
;;; the same format as returned by FLOATING-POINT-MODES.
;; POSIXness and (at the Lisp level) opaque signal contexts,
;; this is stubified. It needs to be rewritten as an
;; alien function.
+ (declare (ignore context)) ; stub!
(warn "stub CONTEXT-FLOATING-POINT-MODES")
;; old code for Linux:
;;; arguments from the instruction stream.
(defun internal-error-arguments (context)
(declare (type (alien (* os-context-t)) context))
+ (/show0 "entering INTERNAL-ERROR-ARGUMENTS, CONTEXT=..")
+ (/hexstr context)
(let ((pc (context-pc context)))
(declare (type system-area-pointer pc))
+ (/show0 "got PC")
;; using INT3 the pc is .. INT3 <here> code length bytes...
(let* ((length (sap-ref-8 pc 1))
- (vector (make-specializable-array
- length
- :element-type '(unsigned-byte 8))))
+ (vector (make-array length :element-type '(unsigned-byte 8))))
(declare (type (unsigned-byte 8) length)
(type (simple-array (unsigned-byte 8) (*)) vector))
+ (/show0 "LENGTH,VECTOR,ERROR-NUMBER=..")
+ (/hexstr length)
+ (/hexstr vector)
(copy-from-system-area pc (* sb!vm:byte-bits 2)
vector (* sb!vm:word-bits
sb!vm:vector-data-offset)
(* length sb!vm:byte-bits))
(let* ((index 0)
(error-number (sb!c::read-var-integer vector index)))
+ (/hexstr error-number)
(collect ((sc-offsets))
(loop
+ (/show0 "INDEX=..")
+ (/hexstr index)
(when (>= index length)
(return))
- (sc-offsets (sb!c::read-var-integer vector index)))
+ (let ((sc-offset (sb!c::read-var-integer vector index)))
+ (/show0 "SC-OFFSET=..")
+ (/hexstr sc-offset)
+ (sc-offsets sc-offset)))
(values error-number (sc-offsets)))))))
\f
;;; Do whatever is necessary to make the given code component
(declare (ignore component))
nil)
-;;; FLOAT-WAIT
-;;;
;;; This is used in error.lisp to insure that floating-point exceptions
;;; are properly trapped. The compiler translates this to a VOP.
(defun float-wait ()
(float-wait))
-;;; FLOAT CONSTANTS
+;;; float constants
;;;
-;;; These are used by the FP MOVE-FROM-{SINGLE|DOUBLE} VOPs rather than the
-;;; i387 load constant instructions to avoid consing in some cases. Note these
-;;; are initialized by GENESIS as they are needed early.
+;;; These are used by the FP MOVE-FROM-{SINGLE|DOUBLE} VOPs rather
+;;; than the i387 load constant instructions to avoid consing in some
+;;; cases. Note these are initialized by GENESIS as they are needed
+;;; early.
(defvar *fp-constant-0s0*)
(defvar *fp-constant-1s0*)
(defvar *fp-constant-0d0*)
(defvar *fp-constant-1d0*)
-;;; The long-float constants.
+;;; the long-float constants
(defvar *fp-constant-0l0*)
(defvar *fp-constant-1l0*)
(defvar *fp-constant-pi*)
(defvar *fp-constant-lg2*)
(defvar *fp-constant-ln2*)
-;;; Enable/disable scavenging of the read-only space.
-(defvar *scavenge-read-only-space* nil)
-;;; FIXME: should be *SCAVENGE-READ-ONLY-SPACE-P*
-
-;;; The current alien stack pointer; saved/restored for non-local exits.
+;;; the current alien stack pointer; saved/restored for non-local exits
(defvar *alien-stack*)
(defun sb!kernel::%instance-set-conditional (object slot test-value new-value)
;;; Support for the MT19937 random number generator. The update
;;; function is implemented as an assembly routine. This definition is
-;;; transformed to a call to the assembly routine allowing its use in byte
-;;; compiled code.
+;;; transformed to a call to the assembly routine allowing its use in
+;;; interpreted code.
(defun random-mt19937 (state)
(declare (type (simple-array (unsigned-byte 32) (627)) state))
(random-mt19937 state))
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