-;;; -*- Package: ALPHA -*-
-;;;
+;;;; Alpha-specific implementation stuff
-(in-package "SB!VM")
-
-(export '(#||# fixup-code-object internal-error-arguments
- context-program-counter context-register
- context-float-register context-floating-point-modes
- extern-alien-name sanctify-for-execution))
-
-\f
-(defvar *number-of-signals* 64)
-(defvar *bits-per-word* 64)
+;;;; This software is part of the SBCL system. See the README file for
+;;;; more information.
+;;;;
+;;;; This software is derived from the CMU CL system, which was
+;;;; written at Carnegie Mellon University and released into the
+;;;; public domain. The software is in the public domain and is
+;;;; provided with absolutely no warranty. See the COPYING and CREDITS
+;;;; files for more information.
-;;; see x86-vm.lisp
-(def-alien-type os-context-t (struct os-context-t-struct))
+(in-package "SB!VM")
+;;; See x86-vm.lisp for a description of this.
+(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."
- "Alpha")
-(defun machine-version ()
- "Returns a string describing the version of the local machine."
+ "Return a string describing the type of the local machine."
"Alpha")
-
-
\f
-;;; FIXUP-CODE-OBJECT -- Interface
-;;;
(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))))
+ (let ((sap (%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)))))
+ (aver (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)))))
(:bits-63-48
- (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
- (value (if (logbitp 31 value) (+ value (ash 1 32)) value))
- (value (if (logbitp 47 value) (+ value (ash 1 48)) value)))
- (setf (sap-ref-8 sap offset) (ldb (byte 8 48) value))
- (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 56) value))))
+ (let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
+ (value (if (logbitp 31 value) (+ value (ash 1 32)) value))
+ (value (if (logbitp 47 value) (+ value (ash 1 48)) value)))
+ (setf (sap-ref-8 sap offset) (ldb (byte 8 48) value))
+ (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 56) value))))
(:bits-47-32
- (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 32) value))
- (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 40) value))))
+ (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 32) value))
+ (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 40) value))))
(:ldah
- (let ((value (if (logbitp 15 value) (+ value (ash 1 16)) value)))
- (setf (sap-ref-8 sap offset) (ldb (byte 8 16) value))
- (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 24) value))))
+ (let ((value (if (logbitp 15 value) (+ value (ash 1 16)) value)))
+ (setf (sap-ref-8 sap offset) (ldb (byte 8 16) value))
+ (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 24) value))))
(:lda
- (setf (sap-ref-8 sap offset) (ldb (byte 8 0) value))
- (setf (sap-ref-8 sap (1+ offset)) (ldb (byte 8 8) 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
-;;; hacked for types. The alpha has 64-bit registers, so these
-;;; potentially return 64 bit numbers (which means bignums ... ew)
-;;; We think that 99 times of 100 (i.e. unless something is badly wrong)
-;;; we'll get answers that fit in 32 bits anyway.
-
-;;; Which probably won't help us stop passing bignums around as the
-;;; compiler can't prove they fit in 32 bits. But maybe the stuff it
-;;; does on x86 to unbox 32-bit constants happens magically for 64-bit
-;;; constants here. Just maybe.
-
-;;; see also x86-vm for commentary on signed vs unsigned.
-
-(def-alien-routine ("os_context_pc_addr" context-pc-addr) (* unsigned-long)
+;;;; "sigcontext" access functions, cut & pasted from x86-vm.lisp then
+;;;; hacked for types.
+;;;;
+;;;; KLUDGE: The alpha has 64-bit registers, so these potentially
+;;;; return 64 bit numbers (which means bignums ... ew) We think that
+;;;; 99 times of 100 (i.e. unless something is badly wrong) we'll get
+;;;; answers that fit in 32 bits anyway. Which probably won't help us
+;;;; stop passing bignums around as the compiler can't prove they fit
+;;;; in 32 bits. But maybe the stuff it does on x86 to unbox 32-bit
+;;;; constants happens magically for 64-bit constants here. Just
+;;;; maybe. -- Dan Barlow, ca. 2001-05-05
+;;;;
+;;;; See also x86-vm for commentary on signed vs unsigned.
+
+(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))
;;; (Are they used in anything time-critical, or just the debugger?)
(defun context-register (context index)
(declare (type (alien (* os-context-t)) context))
- (deref (context-register-addr context index)))
+ (deref (the (alien (* unsigned-long))
+ (context-register-addr context index))))
(defun %set-context-register (context index new)
-(declare (type (alien (* os-context-t)) context))
-(setf (deref (context-register-addr context index))
- new))
+ (declare (type (alien (* os-context-t)) context))
+ (setf (deref (the (alien (* unsigned-long))
+ (context-register-addr context index)))
+ 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.
-;;; 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)
+;;; FIXME: Whether COERCE actually knows how to make a float out of a
+;;; long is another question. This stuff still needs testing.
+(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.
-;;; 4 23 254 240 2 0 0 0
+;;; 4 23 254 240 2 0 0 0
;;; | ~~~~~~~~~~~~~~~~~~~~~~~~~
;;; length data (everything is an octet)
;;; (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))
- (sb!int::/show0 "entering INTERNAL-ERROR-ARGUMENTS")
(let ((pc (context-pc context)))
(declare (type system-area-pointer pc))
;; pc is a SAP pointing at - or actually, shortly after -
(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-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)))
+ (sc-offsets (sb!c:read-var-integer vector index)))
(values error-number (sc-offsets)))))))
-\f
-;;; EXTERN-ALIEN-NAME -- interface.
-;;;
-;;; The loader uses this to convert alien names to the form they occure in
-;;; the symbol table (for example, prepending an underscore). On the Alpha
-;;; we don't do anything.
-;;;
-(defun extern-alien-name (name)
- (declare (type simple-base-string name))
- name)
-
-
-\f
-;;; SANCTIFY-FOR-EXECUTION -- Interface.
-;;;
-;;; 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