(values 'unsigned-byte-32 'unsigned-reg))
(my-make-wired-tn ptype reg-sc (result-reg-offset num-results)))))
+(define-alien-type-method (integer :naturalize-gen) (type alien)
+ (if (<= (alien-type-bits type) 16)
+ (if (alien-integer-type-signed type)
+ `(sign-extend ,alien ,(alien-type-bits type))
+ `(logand ,alien ,(1- (ash 1 (alien-type-bits type)))))
+ alien))
+
(define-alien-type-method (system-area-pointer :result-tn) (type state)
(declare (ignore type))
(let ((num-results (result-state-num-results state)))
,@(new-args))))))
(sb!c::give-up-ir1-transform))))
+;;; The ABI is vague about how signed sub-word integer return values
+;;; are handled, but since gcc versions >=4.3 no longer do sign
+;;; extension in the callee, we need to do it in the caller. FIXME:
+;;; If the value to be extended is known to already be of the target
+;;; type at compile time, we can (and should) elide the extension.
+(defknown sign-extend ((signed-byte 32) t) fixnum
+ (foldable flushable movable))
+
+(define-vop (sign-extend)
+ (:translate sign-extend)
+ (:policy :fast-safe)
+ ;; Need to wire this to EAX since in x86 some dword registers don't
+ ;; have a matching word or byte register.
+ (:args (val :scs (signed-reg) :target eax))
+ (:temporary (:sc signed-reg :offset eax-offset :from :eval :to :result) eax)
+ (:arg-types signed-num (:constant fixnum))
+ (:info size)
+ (:results (res :scs (signed-reg)))
+ (:result-types fixnum)
+ (:ignore eax)
+ (:generator 1
+ (inst movsx res
+ (make-random-tn :kind :normal
+ :sc (sc-or-lose (ecase size
+ (8 'byte-reg)
+ (16 'word-reg)))
+ :offset (tn-offset val)))))
+
+#-sb-xc-host
+(defun sign-extend (x size)
+ (declare (type (signed-byte 32) x))
+ (ecase size
+ (8 (sign-extend x size))
+ (16 (sign-extend x size))))
+
+#+sb-xc-host
+(defun sign-extend (x size)
+ (if (logbitp (1- size) x)
+ (dpb x (byte size 0) -1)
+ x))
+
(define-vop (foreign-symbol-sap)
(:translate foreign-symbol-sap)
(:policy :fast-safe)
:from :eval :to :result) ecx)
(:temporary (:sc unsigned-reg :offset edx-offset
:from :eval :to :result) edx)
- #!+darwin
- (:temporary (:sc unsigned-reg :offset esi-offset) prev-esp)
(:node-var node)
(:vop-var vop)
(:save-p t)
(dotimes (i 8)
(inst fstp fr0-tn))
- #!+win32
+ ;; Clear out DF: Darwin, Windows, and Solaris at least require
+ ;; this, and it should not hurt others either.
(inst cld)
- #!+darwin
- ;; Align stack for C.
- (progn
- (move prev-esp esp-tn)
- (inst and esp-tn -16))
-
(inst call function)
- ;; To give the debugger a clue. XX not really internal-error?
+ ;; To give the debugger a clue. FIXME: not really internal-error?
(note-this-location vop :internal-error)
- #!+darwin
- ;; Restore
- (move esp-tn prev-esp)
-
;; Restore the NPX for lisp; ensure no regs are empty
(dotimes (i 7)
(inst fldz))
(if (and results
(location= (tn-ref-tn results) fr0-tn))
;; The return result is in fr0.
- (inst fxch fr7-tn) ; move the result back to fr0
- (inst fldz)) ; insure no regs are empty
+ (inst fxch fr7-tn) ; move the result back to fr0
+ (inst fldz)) ; insure no regs are empty
))))
;;; While SBCL uses the FPU in 53-bit mode, most C libraries assume that
(define-vop (alloc-number-stack-space)
(:info amount)
(:results (result :scs (sap-reg any-reg)))
+ (:result-types system-area-pointer)
(:generator 0
(aver (location= result esp-tn))
(unless (zerop amount)
(let ((delta (logandc2 (+ amount 3) 3)))
(inst sub esp-tn delta)))
- ;; C stack should probably be 16 byte aligned on Darwin
- #!+darwin (inst and esp-tn -16)
+ (align-stack-pointer esp-tn)
(move result esp-tn)))
-(define-vop (dealloc-number-stack-space)
- (:info amount)
- (:generator 0
- (unless (zerop amount)
- (let ((delta (logandc2 (+ amount 3) 3)))
- (inst add esp-tn delta)))))
-
(define-vop (alloc-alien-stack-space)
(:info amount)
#!+sb-thread (:temporary (:sc unsigned-reg) temp)
(:results (result :scs (sap-reg any-reg)))
+ (:result-types system-area-pointer)
#!+sb-thread
(:generator 0
(aver (not (location= result esp-tn)))
(let ((delta (logandc2 (+ amount 3) 3)))
(inst mov temp
(make-ea-for-symbol-tls-index *alien-stack*))
- (inst fs-segment-prefix)
- (inst sub (make-ea :dword :base temp) delta)))
+ (inst sub (make-ea :dword :base temp) delta :fs)))
(load-tl-symbol-value result *alien-stack*))
#!-sb-thread
(:generator 0
(let ((delta (logandc2 (+ amount 3) 3)))
(inst mov temp
(make-ea-for-symbol-tls-index *alien-stack*))
- (inst fs-segment-prefix)
- (inst add (make-ea :dword :base temp) delta))))
+ (inst add (make-ea :dword :base temp) delta :fs))))
#!-sb-thread
(:generator 0
(unless (zerop amount)
(inst add (make-ea-for-symbol-value *alien-stack*)
delta)))))
-;;; these are not strictly part of the c-call convention, but are
-;;; needed for the WITH-PRESERVED-POINTERS macro used for "locking
-;;; down" lisp objects so that GC won't move them while foreign
-;;; functions go to work.
-
-(define-vop (push-word-on-c-stack)
- (:translate push-word-on-c-stack)
- (:args (val :scs (sap-reg)))
+;;; not strictly part of the c-call convention, but needed for the
+;;; WITH-PINNED-OBJECTS macro used for "locking down" lisp objects so
+;;; that GC won't move them while foreign functions go to work.
+(define-vop (touch-object)
+ (:translate touch-object)
+ (:args (object))
+ (:ignore object)
(:policy :fast-safe)
- (:arg-types system-area-pointer)
- (:generator 2
- (inst push val)))
-
-(define-vop (pop-words-from-c-stack)
- (:translate pop-words-from-c-stack)
- (:args)
- (:arg-types (:constant (unsigned-byte 29)))
- (:info number)
- (:policy :fast-safe)
- (:generator 2
- (inst add esp-tn (fixnumize number))))
+ (:arg-types t)
+ (:generator 0))
#-sb-xc-host
(defun alien-callback-accessor-form (type sp offset)
;; to ensure it'll work even if the GC moves ENTER-ALIEN-CALLBACK.
;; Skip any SB-THREAD TLS magic, since we don't expecte anyone
;; to rebind the variable. -- JES, 2006-01-01
- (inst mov eax (+ nil-value (static-symbol-offset
- 'sb!alien::*enter-alien-callback*)))
- (loadw eax eax symbol-value-slot other-pointer-lowtag)
+ (load-symbol-value eax sb!alien::*enter-alien-callback*)
(inst push eax) ; function
(inst mov eax (foreign-symbol-address "funcall3"))
(inst call eax)
projects / sbcl.git / blobdiff