;;;
(in-package "SB!VM")
-(defvar *number-of-signals* 64)
-(defvar *bits-per-word* 32)
-
(define-alien-type os-context-t (struct os-context-t-struct))
\f
-;;;; MACHINE-TYPE and MACHINE-VERSION
+;;;; MACHINE-TYPE
(defun machine-type ()
"Returns a string describing the type of the local machine."
"PowerPC")
-
-(defun machine-version ()
- "Returns a string describing the version of the local machine."
- "who-knows?")
-
-
\f
;;;; FIXUP-CODE-OBJECT
(unless (zerop (rem offset n-word-bytes))
(error "Unaligned instruction? offset=#x~X." offset))
(sb!sys:without-gcing
- (let ((sap (truly-the system-area-pointer
- (%primitive sb!kernel::code-instructions code))))
+ (let ((sap (%primitive sb!kernel::code-instructions code)))
(ecase kind
(:b
- (error "Can't deal with CALL fixups, yet."))
+ (error "Can't deal with CALL fixups, yet."))
(:ba
- (setf (ldb (byte 24 2) (sap-ref-32 sap offset))
- (ash fixup -2)))
+ (setf (ldb (byte 24 2) (sap-ref-32 sap offset))
+ (ash fixup -2)))
(:ha
- (let* ((h (ldb (byte 16 16) fixup))
- (l (ldb (byte 16 0) fixup)))
- ; Compensate for possible sign-extension when the low half
- ; is added to the high. We could avoid this by ORI-ing
- ; the low half in 32-bit absolute loads, but it'd be
- ; nice to be able to do:
- ; lis rX,foo@ha
- ; lwz rY,foo@l(rX)
- ; and lwz/stw and friends all use a signed 16-bit offset.
- (setf (ldb (byte 16 0) (sap-ref-32 sap offset))
- (if (logbitp 15 l) (ldb (byte 16 0) (1+ h)) h))))
+ (let* ((h (ldb (byte 16 16) fixup))
+ (l (ldb (byte 16 0) fixup)))
+ ; Compensate for possible sign-extension when the low half
+ ; is added to the high. We could avoid this by ORI-ing
+ ; the low half in 32-bit absolute loads, but it'd be
+ ; nice to be able to do:
+ ; lis rX,foo@ha
+ ; lwz rY,foo@l(rX)
+ ; and lwz/stw and friends all use a signed 16-bit offset.
+ (setf (ldb (byte 16 0) (sap-ref-32 sap offset))
+ (if (logbitp 15 l) (ldb (byte 16 0) (1+ h)) h))))
(:l
- (setf (ldb (byte 16 0) (sap-ref-32 sap offset))
- (ldb (byte 16 0) fixup)))))))
+ (setf (ldb (byte 16 0) (sap-ref-32 sap offset))
+ (ldb (byte 16 0) fixup)))))))
;;;; "Sigcontext" access functions, cut & pasted from x86-vm.lisp then
(declare (type (alien (* os-context-t)) context))
(deref (context-register-addr context index)))
+(define-alien-routine ("os_context_lr_addr" context-lr-addr) (* unsigned-long)
+ (context (* os-context-t)))
+
+(defun context-lr (context)
+ (declare (type (alien (* os-context-t)) context))
+ (int-sap (deref (context-lr-addr context))))
+
(defun %set-context-register (context index new)
(declare (type (alien (* os-context-t)) context))
(setf (deref (context-register-addr context index))
;;; Given a signal context, return the floating point modes word in
;;; the same format as returned by FLOATING-POINT-MODES.
+;;;
+;;; FIXME: surely this must be accessible somewhere under Darwin? Or
+;;; under NetBSD?
+#!+linux
(define-alien-routine ("os_context_fp_control" context-floating-point-modes)
(sb!alien:unsigned 32)
(context (* os-context-t)))
;;;
;;; Given the sigcontext, extract the internal error arguments from the
;;; instruction stream.
-;;;
+;;;
(defun internal-error-args (context)
(declare (type (alien (* os-context-t)) context))
(let* ((pc (context-pc context))
- (bad-inst (sap-ref-32 pc 0))
- (op (ldb (byte 16 16) bad-inst)))
+ (bad-inst (sap-ref-32 pc 0))
+ (op (ldb (byte 16 16) bad-inst)))
(declare (type system-area-pointer pc))
(cond ((= op (logior (ash 3 10) (ash 6 5)))
- (args-for-unimp-inst context))
- ((and (= (ldb (byte 6 10) op) 3)
- (= (ldb (byte 5 5) op) 24))
- (let* ((regnum (ldb (byte 5 0) op))
- (prev (sap-ref-32 (int-sap (- (sap-int pc) 4)) 0)))
- (if (and (= (ldb (byte 6 26) prev) 3)
- (= (ldb (byte 5 21) prev) 0))
- (values (ldb (byte 16 0) prev)
- (list (sb!c::make-sc-offset sb!vm:any-reg-sc-number
+ (args-for-unimp-inst context))
+ ((and (= (ldb (byte 6 10) op) 3)
+ (= (ldb (byte 5 5) op) 24))
+ (let* ((regnum (ldb (byte 5 0) op))
+ (prev (sap-ref-32 (int-sap (- (sap-int pc) 4)) 0)))
+ (if (and (= (ldb (byte 6 26) prev) 3)
+ (= (ldb (byte 5 21) prev) 0))
+ (values (ldb (byte 16 0) prev)
+ (list (sb!c::make-sc-offset sb!vm:any-reg-sc-number
(ldb (byte 5 16) prev))))
- (values #.(sb!kernel:error-number-or-lose
- 'sb!kernel:invalid-arg-count-error)
+ (values #.(sb!kernel:error-number-or-lose
+ 'sb!kernel:invalid-arg-count-error)
(list (sb!c::make-sc-offset sb!vm:any-reg-sc-number regnum))))))
-
- (t
- (values #.(error-number-or-lose 'unknown-error) nil)))))
+
+ (t
+ (values #.(error-number-or-lose 'unknown-error) nil)))))
(defun args-for-unimp-inst (context)
(declare (type (alien (* os-context-t)) context))
(let* ((pc (context-pc context))
- (length (sap-ref-8 pc 4))
- (vector (make-array length :element-type '(unsigned-byte 8))))
+ (length (sap-ref-8 pc 4))
+ (vector (make-array length :element-type '(unsigned-byte 8))))
(declare (type system-area-pointer pc)
- (type (unsigned-byte 8) length)
- (type (simple-array (unsigned-byte 8) (*)) vector))
- (copy-from-system-area pc (* sb!vm:n-byte-bits 5)
- vector (* sb!vm:n-word-bits
- sb!vm:vector-data-offset)
- (* length sb!vm:n-byte-bits))
+ (type (unsigned-byte 8) length)
+ (type (simple-array (unsigned-byte 8) (*)) vector))
+ (copy-ub8-from-system-area pc 5 vector 0 length)
(let* ((index 0)
- (error-number (sb!c:read-var-integer vector index)))
+ (error-number (sb!c:read-var-integer vector index)))
(collect ((sc-offsets))
- (loop
- (when (>= index length)
- (return))
- (sc-offsets (sb!c:read-var-integer vector index)))
- (values error-number (sc-offsets))))))
-
-
+ (loop
+ (when (>= index length)
+ (return))
+ (sc-offsets (sb!c:read-var-integer vector index)))
+ (values error-number (sc-offsets))))))
projects / sbcl.git / blobdiff