(defvar *bits-per-word* 64)
;;; See x86-vm.lisp for a description of this.
-(def-alien-type os-context-t (struct os-context-t-struct))
+(define-alien-type os-context-t (struct os-context-t-struct))
\f
;;;; MACHINE-TYPE and MACHINE-VERSION
"Alpha")
\f
(defun fixup-code-object (code offset value kind)
- (unless (zerop (rem offset word-bytes))
+ (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))))
+ (%primitive code-instructions code))))
(ecase kind
(:jmp-hint
(assert (zerop (ldb (byte 2 0) value)))
#+nil
(setf (sap-ref-16 sap offset)
- (logior (sap-ref-16 sap offset) (ldb (byte 14 0) (ash value -2)))))
+ (logior (sap-ref-16 sap offset)
+ (ldb (byte 14 0) (ash value -2)))))
(:bits-63-48
(let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
(value (if (logbitp 31 value) (+ value (ash 1 32)) value))
(setf (sap-ref-8 sap offset) (ldb (byte 8 0) value))
(setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 8) value)))))))
\f
-;;;; "Sigcontext" access functions, cut & pasted from x86-vm.lisp then
+;;;; "sigcontext" access functions, cut & pasted from x86-vm.lisp then
;;;; hacked for types.
;;;;
;;;; KLUDGE: The alpha has 64-bit registers, so these potentially
;;;;
;;;; See also x86-vm for commentary on signed vs unsigned.
-(def-alien-routine ("os_context_pc_addr" context-pc-addr) (* unsigned-long)
+(define-alien-routine ("os_context_pc_addr" context-pc-addr) (* unsigned-long)
(context (* os-context-t)))
(defun context-pc (context)
(declare (type (alien (* os-context-t)) context))
(int-sap (deref (context-pc-addr context))))
-(def-alien-routine ("os_context_register_addr" context-register-addr)
+(define-alien-routine ("os_context_register_addr" context-register-addr)
(* unsigned-long)
(context (* os-context-t))
(index int))
;;; FIXME: Whether COERCE actually knows how to make a float out of a
;;; long is another question. This stuff still needs testing.
-(def-alien-routine ("os_context_fpregister_addr" context-float-register-addr)
+(define-alien-routine ("os_context_float_register_addr"
+ context-float-register-addr)
(* long)
(context (* os-context-t))
(index int))
(setf (deref (context-float-register-addr context index))
(coerce new format)))
+;;; This sets the software fp_control word, which is not the same
+;;; thing as the hardware fpcr. We have to do this so that OS FPU
+;;; completion works properly
+
+;;; Note that this means we can't set rounding modes; we'd have to do
+;;; that separately. That said, almost everybody seems to agree that
+;;; changing the rounding mode is rarely a good idea, because it upsets
+;;; libm functions. So adding that is not a priority. Sorry.
+;;; -dan 2001.02.06
+
+(define-alien-routine
+ ("arch_get_fp_control" floating-point-modes) (sb!alien:unsigned 64))
+
+(define-alien-routine
+ ("arch_set_fp_control" %floating-point-modes-setter) void (fp (sb!alien:unsigned 64)))
+
+(defun (setf floating-point-modes) (val) (%floating-point-modes-setter val))
+
;;; Given a signal context, return the floating point modes word in
;;; the same format as returned by FLOATING-POINT-MODES.
-(defun context-floating-point-modes (context)
- ;; FIXME: As of sbcl-0.6.7 and the big rewrite of signal handling for
- ;; POSIXness and (at the Lisp level) opaque signal contexts,
- ;; this is stubified. It needs to be rewritten as an
- ;; alien function.
- (warn "stub CONTEXT-FLOATING-POINT-MODES")
-
- ;; old code for Linux:
- #+nil
- (let ((cw (slot (deref (slot context 'fpstate) 0) 'cw))
- (sw (slot (deref (slot context 'fpstate) 0) 'sw)))
- ;;(format t "cw = ~4X~%sw = ~4X~%" cw sw)
- ;; NOT TESTED -- Clear sticky bits to clear interrupt condition.
- (setf (slot (deref (slot context 'fpstate) 0) 'sw) (logandc2 sw #x3f))
- ;;(format t "new sw = ~X~%" (slot (deref (slot context 'fpstate) 0) 'sw))
- ;; Simulate floating-point-modes VOP.
- (logior (ash (logand sw #xffff) 16) (logxor (logand cw #xffff) #x3f)))
-
- 0)
+(define-alien-routine ("os_context_fp_control" context-floating-point-modes)
+ (sb!alien:unsigned 64) (context (* os-context-t)))
+
\f
-;;;; INTERNAL-ERROR-ARGUMENTS
+;;;; INTERNAL-ERROR-ARGS
;;; Given a (POSIX) signal context, extract the internal error
;;; arguments from the instruction stream. This is e.g.
;;; (pc)
;;; (example from undefined_tramp: "(gdb) x/40ub 0x10148" for yourself
;;; to replicate)
-(defun internal-error-arguments (context)
+(defun internal-error-args (context)
(declare (type (alien (* os-context-t)) context))
(let ((pc (context-pc context)))
(declare (type system-area-pointer pc))
(vector (make-array length :element-type '(unsigned-byte 8))))
(declare (type (unsigned-byte 8) length)
(type (simple-array (unsigned-byte 8) (*)) vector))
- (copy-from-system-area pc (* sb!vm:byte-bits 5)
- vector (* sb!vm:word-bits
- sb!vm:vector-data-offset)
- (* length sb!vm:byte-bits))
+ (copy-from-system-area pc (* n-byte-bits 5)
+ vector (* n-word-bits vector-data-offset)
+ (* length n-byte-bits))
(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)))
+ (sc-offsets (sb!c:read-var-integer vector index)))
(values error-number (sc-offsets)))))))
-\f
-;;; The loader uses this to convert alien names to the form they
-;;; occure in the symbol table (for example, prepending an
-;;; underscore).
-(defun extern-alien-name (name)
- (declare (type simple-base-string name))
- ;; On the Alpha we don't do anything.
- name)
-\f
-;;;; Do whatever is necessary to make the given code component
-;;;; executable.
-;;;;
-;;;; XXX do we really not have to flush caches or something here? I
-;;;; need an architecture manual
-(defun sanctify-for-execution (component)
- (declare (ignore component))
- nil)
+
projects / sbcl.git / blobdiff