(:generator 1
nil))
+;;; Accessing a slot from an earlier stack frame is definite hackery.
+(define-vop (ancestor-frame-ref)
+ (:args (frame-pointer :scs (descriptor-reg))
+ (variable-home-tn :load-if nil))
+ (:results (value :scs (descriptor-reg any-reg)))
+ (:policy :fast-safe)
+ (:generator 4
+ (aver (sc-is variable-home-tn control-stack))
+ (loadw value frame-pointer
+ (frame-word-offset (tn-offset variable-home-tn)))))
+(define-vop (ancestor-frame-set)
+ (:args (frame-pointer :scs (descriptor-reg))
+ (value :scs (descriptor-reg any-reg)))
+ (:results (variable-home-tn :load-if nil))
+ (:policy :fast-safe)
+ (:generator 4
+ (aver (sc-is variable-home-tn control-stack))
+ (storew value frame-pointer
+ (frame-word-offset (tn-offset variable-home-tn)))))
+
+(macrolet ((define-frame-op
+ (suffix sc stack-sc instruction
+ &optional (ea
+ `(make-ea :dword
+ :base frame-pointer
+ :disp (frame-byte-offset
+ (tn-offset variable-home-tn)))))
+ (let ((reffer (symbolicate 'ancestor-frame-ref '/ suffix))
+ (setter (symbolicate 'ancestor-frame-set '/ suffix)))
+ `(progn
+ (define-vop (,reffer ancestor-frame-ref)
+ (:results (value :scs (,sc)))
+ (:generator 4
+ (aver (sc-is variable-home-tn ,stack-sc))
+ (inst ,instruction value
+ ,ea)))
+ (define-vop (,setter ancestor-frame-set)
+ (:args (frame-pointer :scs (descriptor-reg))
+ (value :scs (,sc)))
+ (:generator 4
+ (aver (sc-is variable-home-tn ,stack-sc))
+ (inst ,instruction ,ea value))))))
+ (define-x87-frame-op
+ (suffix sc stack-sc (load set)
+ &optional (ea
+ `(make-ea :dword
+ :base frame-pointer
+ :disp (frame-byte-offset
+ (tn-offset variable-home-tn)))))
+ (let ((reffer (symbolicate 'ancestor-frame-ref '/ suffix))
+ (setter (symbolicate 'ancestor-frame-set '/ suffix)))
+ `(progn
+ (define-vop (,reffer ancestor-frame-ref)
+ (:results (value :scs (,sc)))
+ (:generator 4
+ (aver (sc-is variable-home-tn ,stack-sc))
+ ,(if (symbolp load)
+ `(with-empty-tn@fp-top (value)
+ (inst ,load ,ea))
+ load)))
+ (define-vop (,setter ancestor-frame-set)
+ (:args (frame-pointer :scs (descriptor-reg))
+ (value :scs (,sc)))
+ (:generator 4
+ (aver (sc-is variable-home-tn ,stack-sc))
+ ,(if (symbolp set)
+ `(with-tn@fp-top (value)
+ (inst ,set ,ea))
+ set)))))))
+ (define-frame-op signed-byte-32 signed-reg signed-stack mov)
+ (define-frame-op unsigned-byte-32 unsigned-reg unsigned-stack mov)
+ (define-frame-op system-area-pointer sap-reg sap-stack mov)
+
+ (define-x87-frame-op double-float double-reg double-stack
+ (fldd fstd) (make-ea :dword
+ :base frame-pointer
+ :disp (frame-byte-offset
+ (1+ (tn-offset variable-home-tn)))))
+ (define-x87-frame-op single-float single-reg single-stack
+ (fld fst))
+
+ (define-x87-frame-op complex-double-float complex-double-reg
+ complex-double-stack
+ ((let ((real (complex-double-reg-real-tn value))
+ (imag (complex-double-reg-imag-tn value)))
+ (with-empty-tn@fp-top (real)
+ (inst fldd (ea-for-cdf-real-stack variable-home-tn frame-pointer)))
+ (with-empty-tn@fp-top (imag)
+ (inst fldd (ea-for-cdf-imag-stack variable-home-tn frame-pointer))))
+ (let ((real (complex-double-reg-real-tn value))
+ (imag (complex-double-reg-imag-tn value)))
+ (with-tn@fp-top (real)
+ (inst fstd (ea-for-cdf-real-stack variable-home-tn frame-pointer)))
+ (with-tn@fp-top (imag)
+ (inst fstd (ea-for-cdf-imag-stack variable-home-tn frame-pointer))))))
+ (define-x87-frame-op complex-single-float complex-single-reg
+ complex-single-stack
+ ((let ((real (complex-single-reg-real-tn value))
+ (imag (complex-single-reg-imag-tn value)))
+ (with-empty-tn@fp-top (real)
+ (inst fld (ea-for-csf-real-stack variable-home-tn frame-pointer)))
+ (with-empty-tn@fp-top (imag)
+ (inst fld (ea-for-csf-imag-stack variable-home-tn frame-pointer))))
+ (let ((real (complex-single-reg-real-tn value))
+ (imag (complex-single-reg-imag-tn value)))
+ (with-tn@fp-top (real)
+ (inst fst (ea-for-csf-real-stack variable-home-tn frame-pointer)))
+ (with-tn@fp-top (imag)
+ (inst fst (ea-for-csf-imag-stack variable-home-tn frame-pointer)))))))
+
+(defun primitive-type-indirect-cell-type (ptype)
+ (declare (type primitive-type ptype))
+ (macrolet ((foo (&body data)
+ `(case (primitive-type-name ptype)
+ ,@(loop for (name stack-sc ref set) in data
+ collect
+ `(,name
+ (load-time-value
+ (list (primitive-type-or-lose ',name)
+ (sc-or-lose ',stack-sc)
+ (lambda (node block fp value res)
+ (sb!c::vop ,ref node block
+ fp value res))
+ (lambda (node block fp new-val value)
+ (sb!c::vop ,set node block
+ fp new-val value)))))))))
+ (foo (double-float double-stack
+ ancestor-frame-ref/double-float
+ ancestor-frame-set/double-float)
+ (single-float single-stack
+ ancestor-frame-ref/single-float
+ ancestor-frame-set/single-float)
+ (complex-double-float complex-double-stack
+ ancestor-frame-ref/complex-double-float
+ ancestor-frame-set/complex-double-float)
+ (complex-single-float complex-single-stack
+ ancestor-frame-ref/complex-single-float
+ ancestor-frame-set/complex-single-float)
+ (signed-byte-32 signed-stack
+ ancestor-frame-ref/signed-byte-32
+ ancestor-frame-set/signed-byte-32)
+ (unsigned-byte-32 unsigned-stack
+ ancestor-frame-ref/unsigned-byte-32
+ ancestor-frame-set/unsigned-byte-32)
+ (unsigned-byte-31 unsigned-stack
+ ancestor-frame-ref/unsigned-byte-32
+ ancestor-frame-set/unsigned-byte-32)
+ (system-area-pointer sap-stack
+ ancestor-frame-ref/system-area-pointer
+ ancestor-frame-set/system-area-pointer))))
+
(define-vop (xep-allocate-frame)
(:info start-lab copy-more-arg-follows)
(:vop-var vop)
;;; there are stack values.
;;; -- Reset SP. This must be done whenever other than 1 value is
;;; returned, regardless of the number of values desired.
-(defun default-unknown-values (vop values nvals)
+(defun default-unknown-values (vop values nvals node)
(declare (type (or tn-ref null) values)
(type unsigned-byte nvals))
- (cond
- ((<= nvals 1)
- (note-this-location vop :single-value-return)
+ (let ((type (sb!c::basic-combination-derived-type node)))
(cond
- ((member :cmov *backend-subfeatures*)
- (inst cmov :c esp-tn ebx-tn))
+ ((<= nvals 1)
+ (note-this-location vop :single-value-return)
+ (cond
+ ((<= (sb!kernel:values-type-max-value-count type)
+ register-arg-count)
+ (when (and (named-type-p type)
+ (eq nil (named-type-name type)))
+ ;; The function never returns, it may happen that the code
+ ;; ends right here leavig the :SINGLE-VALUE-RETURN note
+ ;; dangling. Let's emit a NOP.
+ (inst nop)))
+ ((not (sb!kernel:values-type-may-be-single-value-p type))
+ (inst mov esp-tn ebx-tn))
+ ((member :cmov *backend-subfeatures*)
+ (inst cmov :c esp-tn ebx-tn))
+ (t
+ (let ((single-value (gen-label)))
+ (inst jmp :nc single-value)
+ (inst mov esp-tn ebx-tn)
+ (emit-label single-value)))))
+ ((<= nvals register-arg-count)
+ (note-this-location vop :unknown-return)
+ (when (sb!kernel:values-type-may-be-single-value-p type)
+ (let ((regs-defaulted (gen-label)))
+ (inst jmp :c regs-defaulted)
+ ;; Default the unsupplied registers.
+ (let* ((2nd-tn-ref (tn-ref-across values))
+ (2nd-tn (tn-ref-tn 2nd-tn-ref)))
+ (inst mov 2nd-tn nil-value)
+ (when (> nvals 2)
+ (loop
+ for tn-ref = (tn-ref-across 2nd-tn-ref)
+ then (tn-ref-across tn-ref)
+ for count from 2 below register-arg-count
+ do (inst mov (tn-ref-tn tn-ref) 2nd-tn))))
+ (inst mov ebx-tn esp-tn)
+ (emit-label regs-defaulted)))
+ (when (< register-arg-count
+ (sb!kernel:values-type-max-value-count type))
+ (inst mov esp-tn ebx-tn)))
+ ((<= nvals 7)
+ ;; The number of bytes depends on the relative jump instructions.
+ ;; Best case is 31+(n-3)*14, worst case is 35+(n-3)*18. For
+ ;; NVALS=6 that is 73/89 bytes, and for NVALS=7 that is 87/107
+ ;; bytes which is likely better than using the blt below.
+ (let ((regs-defaulted (gen-label))
+ (defaulting-done (gen-label))
+ (default-stack-slots (gen-label)))
+ (note-this-location vop :unknown-return)
+ ;; Branch off to the MV case.
+ (inst jmp :c regs-defaulted)
+ ;; Do the single value case.
+ ;; Default the register args
+ (inst mov eax-tn nil-value)
+ (do ((i 1 (1+ i))
+ (val (tn-ref-across values) (tn-ref-across val)))
+ ((= i (min nvals register-arg-count)))
+ (inst mov (tn-ref-tn val) eax-tn))
+ ;; Fake other registers so it looks like we returned with all the
+ ;; registers filled in.
+ (move ebx-tn esp-tn)
+ (inst jmp default-stack-slots)
+ (emit-label regs-defaulted)
+ (inst mov eax-tn nil-value)
+ (collect ((defaults))
+ (do ((i register-arg-count (1+ i))
+ (val (do ((i 0 (1+ i))
+ (val values (tn-ref-across val)))
+ ((= i register-arg-count) val))
+ (tn-ref-across val)))
+ ((null val))
+ (let ((default-lab (gen-label))
+ (tn (tn-ref-tn val))
+ (first-stack-arg-p (= i register-arg-count)))
+ (defaults (cons default-lab
+ (cons tn first-stack-arg-p)))
+ (inst cmp ecx-tn (fixnumize i))
+ (inst jmp :be default-lab)
+ (when first-stack-arg-p
+ ;; There are stack args so the frame of the callee is
+ ;; still there, save EDX in its first slot temporalily.
+ (storew edx-tn ebx-tn (frame-word-offset sp->fp-offset)))
+ (loadw edx-tn ebx-tn (frame-word-offset (+ sp->fp-offset i)))
+ (inst mov tn edx-tn)))
+ (emit-label defaulting-done)
+ (loadw edx-tn ebx-tn (frame-word-offset sp->fp-offset))
+ (move esp-tn ebx-tn)
+ (let ((defaults (defaults)))
+ (when defaults
+ (assemble (*elsewhere*)
+ (trace-table-entry trace-table-fun-prologue)
+ (emit-label default-stack-slots)
+ (dolist (default defaults)
+ (emit-label (car default))
+ (when (cddr default)
+ ;; We are setting the first stack argument to NIL.
+ ;; The callee's stack frame is dead, save EDX by
+ ;; pushing it to the stack, it will end up at same
+ ;; place as in the (STOREW EDX-TN EBX-TN -1) case
+ ;; above.
+ (inst push edx-tn))
+ (inst mov (second default) eax-tn))
+ (inst jmp defaulting-done)
+ (trace-table-entry trace-table-normal)))))))
(t
- (let ((single-value (gen-label)))
- (inst jmp :nc single-value)
+ ;; 91 bytes for this branch.
+ (let ((regs-defaulted (gen-label))
+ (restore-edi (gen-label))
+ (no-stack-args (gen-label))
+ (default-stack-vals (gen-label))
+ (count-okay (gen-label)))
+ (note-this-location vop :unknown-return)
+ ;; Branch off to the MV case.
+ (inst jmp :c regs-defaulted)
+ ;; Default the register args, and set up the stack as if we
+ ;; entered the MV return point.
+ (inst mov ebx-tn esp-tn)
+ (inst mov edi-tn nil-value)
+ (inst mov esi-tn edi-tn)
+ ;; Compute a pointer to where to put the [defaulted] stack values.
+ (emit-label no-stack-args)
+ (inst push edx-tn)
+ (inst push edi-tn)
+ (inst lea edi-tn
+ (make-ea :dword :base ebp-tn
+ :disp (frame-byte-offset register-arg-count)))
+ ;; Load EAX with NIL so we can quickly store it, and set up
+ ;; stuff for the loop.
+ (inst mov eax-tn nil-value)
+ (inst std)
+ (inst mov ecx-tn (- nvals register-arg-count))
+ ;; Jump into the default loop.
+ (inst jmp default-stack-vals)
+ ;; The regs are defaulted. We need to copy any stack arguments,
+ ;; and then default the remaining stack arguments.
+ (emit-label regs-defaulted)
+ ;; Compute the number of stack arguments, and if it's zero or
+ ;; less, don't copy any stack arguments.
+ (inst sub ecx-tn (fixnumize register-arg-count))
+ (inst jmp :le no-stack-args)
+ ;; Save EDI.
+ (storew edi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 1)))
+ ;; Throw away any unwanted args.
+ (inst cmp ecx-tn (fixnumize (- nvals register-arg-count)))
+ (inst jmp :be count-okay)
+ (inst mov ecx-tn (fixnumize (- nvals register-arg-count)))
+ (emit-label count-okay)
+ ;; Save the number of stack values.
+ (inst mov eax-tn ecx-tn)
+ ;; Compute a pointer to where the stack args go.
+ (inst lea edi-tn
+ (make-ea :dword :base ebp-tn
+ :disp (frame-byte-offset register-arg-count)))
+ ;; Save ESI, and compute a pointer to where the args come from.
+ (storew esi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 2)))
+ (inst lea esi-tn
+ (make-ea :dword :base ebx-tn
+ :disp (frame-byte-offset
+ (+ sp->fp-offset register-arg-count))))
+ ;; Do the copy.
+ (inst shr ecx-tn word-shift) ; make word count
+ (inst std)
+ (inst rep)
+ (inst movs :dword)
+ ;; Restore ESI.
+ (loadw esi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 2)))
+ ;; Now we have to default the remaining args. Find out how many.
+ (inst sub eax-tn (fixnumize (- nvals register-arg-count)))
+ (inst neg eax-tn)
+ ;; If none, then just blow out of here.
+ (inst jmp :le restore-edi)
+ (inst mov ecx-tn eax-tn)
+ (inst shr ecx-tn word-shift) ; word count
+ ;; Load EAX with NIL for fast storing.
+ (inst mov eax-tn nil-value)
+ ;; Do the store.
+ (emit-label default-stack-vals)
+ (inst rep)
+ (inst stos eax-tn)
+ ;; Restore EDI, and reset the stack.
+ (emit-label restore-edi)
+ (loadw edi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 1)))
(inst mov esp-tn ebx-tn)
- (emit-label single-value)))))
- ((<= nvals register-arg-count)
- (let ((regs-defaulted (gen-label)))
- (note-this-location vop :unknown-return)
- (inst jmp :c regs-defaulted)
- ;; Default the unsupplied registers.
- (let* ((2nd-tn-ref (tn-ref-across values))
- (2nd-tn (tn-ref-tn 2nd-tn-ref)))
- (inst mov 2nd-tn nil-value)
- (when (> nvals 2)
- (loop
- for tn-ref = (tn-ref-across 2nd-tn-ref)
- then (tn-ref-across tn-ref)
- for count from 2 below register-arg-count
- do (inst mov (tn-ref-tn tn-ref) 2nd-tn))))
- (inst mov ebx-tn esp-tn)
- (emit-label regs-defaulted)
- (inst mov esp-tn ebx-tn)))
- ((<= nvals 7)
- ;; The number of bytes depends on the relative jump instructions.
- ;; Best case is 31+(n-3)*14, worst case is 35+(n-3)*18. For
- ;; NVALS=6 that is 73/89 bytes, and for NVALS=7 that is 87/107
- ;; bytes which is likely better than using the blt below.
- (let ((regs-defaulted (gen-label))
- (defaulting-done (gen-label))
- (default-stack-slots (gen-label)))
- (note-this-location vop :unknown-return)
- ;; Branch off to the MV case.
- (inst jmp :c regs-defaulted)
- ;; Do the single value case.
- ;; Default the register args
- (inst mov eax-tn nil-value)
- (do ((i 1 (1+ i))
- (val (tn-ref-across values) (tn-ref-across val)))
- ((= i (min nvals register-arg-count)))
- (inst mov (tn-ref-tn val) eax-tn))
-
- ;; Fake other registers so it looks like we returned with all the
- ;; registers filled in.
- (move ebx-tn esp-tn)
- (inst jmp default-stack-slots)
-
- (emit-label regs-defaulted)
-
- (inst mov eax-tn nil-value)
- (collect ((defaults))
- (do ((i register-arg-count (1+ i))
- (val (do ((i 0 (1+ i))
- (val values (tn-ref-across val)))
- ((= i register-arg-count) val))
- (tn-ref-across val)))
- ((null val))
- (let ((default-lab (gen-label))
- (tn (tn-ref-tn val))
- (first-stack-arg-p (= i register-arg-count)))
- (defaults (cons default-lab (cons tn first-stack-arg-p)))
-
- (inst cmp ecx-tn (fixnumize i))
- (inst jmp :be default-lab)
- (when first-stack-arg-p
- ;; There are stack args so the frame of the callee is
- ;; still there, save EDX in its first slot temporalily.
- (storew edx-tn ebx-tn (frame-word-offset sp->fp-offset)))
- (loadw edx-tn ebx-tn (frame-word-offset (+ sp->fp-offset i)))
- (inst mov tn edx-tn)))
-
- (emit-label defaulting-done)
- (loadw edx-tn ebx-tn (frame-word-offset sp->fp-offset))
- (move esp-tn ebx-tn)
-
- (let ((defaults (defaults)))
- (when defaults
- (assemble (*elsewhere*)
- (trace-table-entry trace-table-fun-prologue)
- (emit-label default-stack-slots)
- (dolist (default defaults)
- (emit-label (car default))
- (when (cddr default)
- ;; We are setting the first stack argument to NIL.
- ;; The callee's stack frame is dead, save EDX by
- ;; pushing it to the stack, it will end up at same
- ;; place as in the (STOREW EDX-TN EBX-TN -1) case
- ;; above.
- (inst push edx-tn))
- (inst mov (second default) eax-tn))
- (inst jmp defaulting-done)
- (trace-table-entry trace-table-normal)))))))
- (t
- ;; 91 bytes for this branch.
- (let ((regs-defaulted (gen-label))
- (restore-edi (gen-label))
- (no-stack-args (gen-label))
- (default-stack-vals (gen-label))
- (count-okay (gen-label)))
- (note-this-location vop :unknown-return)
- ;; Branch off to the MV case.
- (inst jmp :c regs-defaulted)
-
- ;; Default the register args, and set up the stack as if we
- ;; entered the MV return point.
- (inst mov ebx-tn esp-tn)
- (inst mov edi-tn nil-value)
- (inst mov esi-tn edi-tn)
- ;; Compute a pointer to where to put the [defaulted] stack values.
- (emit-label no-stack-args)
- (inst push edx-tn)
- (inst push edi-tn)
- (inst lea edi-tn
- (make-ea :dword :base ebp-tn
- :disp (frame-byte-offset register-arg-count)))
- ;; Load EAX with NIL so we can quickly store it, and set up
- ;; stuff for the loop.
- (inst mov eax-tn nil-value)
- (inst std)
- (inst mov ecx-tn (- nvals register-arg-count))
- ;; Jump into the default loop.
- (inst jmp default-stack-vals)
-
- ;; The regs are defaulted. We need to copy any stack arguments,
- ;; and then default the remaining stack arguments.
- (emit-label regs-defaulted)
- ;; Save EDI.
- (storew edi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 1)))
- ;; Compute the number of stack arguments, and if it's zero or
- ;; less, don't copy any stack arguments.
- (inst sub ecx-tn (fixnumize register-arg-count))
- (inst jmp :le no-stack-args)
-
- ;; Throw away any unwanted args.
- (inst cmp ecx-tn (fixnumize (- nvals register-arg-count)))
- (inst jmp :be count-okay)
- (inst mov ecx-tn (fixnumize (- nvals register-arg-count)))
- (emit-label count-okay)
- ;; Save the number of stack values.
- (inst mov eax-tn ecx-tn)
- ;; Compute a pointer to where the stack args go.
- (inst lea edi-tn
- (make-ea :dword :base ebp-tn
- :disp (frame-byte-offset register-arg-count)))
- ;; Save ESI, and compute a pointer to where the args come from.
- (storew esi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 2)))
- (inst lea esi-tn
- (make-ea :dword :base ebx-tn
- :disp (frame-byte-offset
- (+ sp->fp-offset register-arg-count))))
- ;; Do the copy.
- (inst shr ecx-tn word-shift) ; make word count
- (inst std)
- (inst rep)
- (inst movs :dword)
- ;; Restore ESI.
- (loadw esi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 2)))
- ;; Now we have to default the remaining args. Find out how many.
- (inst sub eax-tn (fixnumize (- nvals register-arg-count)))
- (inst neg eax-tn)
- ;; If none, then just blow out of here.
- (inst jmp :le restore-edi)
- (inst mov ecx-tn eax-tn)
- (inst shr ecx-tn word-shift) ; word count
- ;; Load EAX with NIL for fast storing.
- (inst mov eax-tn nil-value)
- ;; Do the store.
- (emit-label default-stack-vals)
- (inst rep)
- (inst stos eax-tn)
- ;; Restore EDI, and reset the stack.
- (emit-label restore-edi)
- (loadw edi-tn ebx-tn (frame-word-offset (+ sp->fp-offset 1)))
- (inst mov esp-tn ebx-tn)
- (inst cld))))
+ (inst cld)))))
(values))
\f
;;;; unknown values receiving
;;; explicitly allocate these TNs, since their lifetimes overlap with
;;; the results start and count. (Also, it's nice to be able to target
;;; them.)
-(defun receive-unknown-values (args nargs start count)
+(defun receive-unknown-values (args nargs start count node)
(declare (type tn args nargs start count))
- (let ((variable-values (gen-label))
+ (let ((type (sb!c::basic-combination-derived-type node))
+ (variable-values (gen-label))
(stack-values (gen-label))
(done (gen-label)))
- (inst jmp :c variable-values)
-
- (cond ((location= start (first *register-arg-tns*))
- (inst push (first *register-arg-tns*))
- (inst lea start (make-ea :dword :base esp-tn :disp n-word-bytes)))
- (t (inst mov start esp-tn)
- (inst push (first *register-arg-tns*))))
- (inst mov count (fixnumize 1))
- (inst jmp done)
-
- (emit-label variable-values)
+ (when (sb!kernel:values-type-may-be-single-value-p type)
+ (inst jmp :c variable-values)
+ (cond ((location= start (first *register-arg-tns*))
+ (inst push (first *register-arg-tns*))
+ (inst lea start (make-ea :dword :base esp-tn :disp n-word-bytes)))
+ (t (inst mov start esp-tn)
+ (inst push (first *register-arg-tns*))))
+ (inst mov count (fixnumize 1))
+ (inst jmp done)
+ (emit-label variable-values))
;; The stack frame is burnt and RETurned from if there are no
;; stack values. In this case quickly reallocate sufficient space.
- (inst cmp nargs (fixnumize register-arg-count))
- (inst jmp :g stack-values)
- (inst sub esp-tn nargs)
- (emit-label stack-values)
+ (when (<= (sb!kernel:values-type-min-value-count type)
+ register-arg-count)
+ (inst cmp nargs (fixnumize register-arg-count))
+ (inst jmp :g stack-values)
+ (inst sub esp-tn nargs)
+ (emit-label stack-values))
;; dtc: this writes the registers onto the stack even if they are
;; not needed, only the number specified in ecx are used and have
;; stack allocated to them. No harm is done.
(loop
for arg in *register-arg-tns*
for i downfrom -1
+ for j below (sb!kernel:values-type-max-value-count type)
do (storew arg args i))
(move start args)
(move count nargs)
(= (tn-offset return-pc) return-pc-save-offset))
(error "return-pc not on stack in standard save location?")))
+;;; The local call convention doesn't fit that well with x86-style
+;;; calls. Emit a header for local calls to pop the return address
+;;; in the right place.
+(defun emit-block-header (start-label trampoline-label fall-thru-p alignp)
+ (declare (ignore alignp))
+ (when trampoline-label
+ (when fall-thru-p
+ (inst jmp start-label))
+ (emit-label trampoline-label)
+ (popw ebp-tn (frame-word-offset return-pc-save-offset)))
+ (emit-label start-label))
+
;;; Non-TR local call for a fixed number of values passed according to
;;; the unknown values convention.
;;;
(:move-args :local-call)
(:info arg-locs callee target nvals)
(:vop-var vop)
- (:ignore nfp arg-locs args #+nil callee)
+ (:ignore nfp arg-locs args callee)
+ (:node-var node)
(:generator 5
(trace-table-entry trace-table-call-site)
(move ebp-tn fp)
-
- (let ((ret-tn (callee-return-pc-tn callee)))
- #+nil
- (format t "*call-local ~S; tn-kind ~S; tn-save-tn ~S; its tn-kind ~S~%"
- ret-tn (sb!c::tn-kind ret-tn) (sb!c::tn-save-tn ret-tn)
- (sb!c::tn-kind (sb!c::tn-save-tn ret-tn)))
-
- ;; Is the return-pc on the stack or in a register?
- (sc-case ret-tn
- ((sap-stack)
- (unless (= (tn-offset ret-tn) return-pc-save-offset)
- (error "ret-tn ~A in wrong stack slot" ret-tn))
- #+nil (format t "*call-local: ret-tn on stack; offset=~S~%"
- (tn-offset ret-tn))
- (storew (make-fixup nil :code-object RETURN)
- ebp-tn (frame-word-offset (tn-offset ret-tn))))
- (t
- (error "ret-tn ~A in sap-reg" ret-tn))))
-
(note-this-location vop :call-site)
- (inst jmp target)
- RETURN
- (default-unknown-values vop values nvals)
+ (inst call target)
+ (default-unknown-values vop values nvals node)
(trace-table-entry trace-table-normal)))
;;; Non-TR local call for a variable number of return values passed according
(:save-p t)
(:move-args :local-call)
(:info save callee target)
- (:ignore args save nfp #+nil callee)
+ (:ignore args save nfp callee)
(:vop-var vop)
+ (:node-var node)
(:generator 20
(trace-table-entry trace-table-call-site)
(move ebp-tn fp)
-
- (let ((ret-tn (callee-return-pc-tn callee)))
- #+nil
- (format t "*multiple-call-local ~S; tn-kind ~S; tn-save-tn ~S; its tn-kind ~S~%"
- ret-tn (sb!c::tn-kind ret-tn) (sb!c::tn-save-tn ret-tn)
- (sb!c::tn-kind (sb!c::tn-save-tn ret-tn)))
-
- ;; Is the return-pc on the stack or in a register?
- (sc-case ret-tn
- ((sap-stack)
- #+nil (format t "*multiple-call-local: ret-tn on stack; offset=~S~%"
- (tn-offset ret-tn))
- ;; Stack
- (storew (make-fixup nil :code-object RETURN)
- ebp-tn (frame-word-offset (tn-offset ret-tn))))
- (t
- (error "multiple-call-local: return-pc not on stack."))))
-
(note-this-location vop :call-site)
- (inst jmp target)
- RETURN
+ (inst call target)
(note-this-location vop :unknown-return)
- (receive-unknown-values values-start nvals start count)
+ (receive-unknown-values values-start nvals start count node)
(trace-table-entry trace-table-normal)))
\f
;;;; local call with known values return
(:move-args :local-call)
(:save-p t)
(:info save callee target)
- (:ignore args res save nfp #+nil callee)
+ (:ignore args res save nfp callee)
(:vop-var vop)
(:generator 5
(trace-table-entry trace-table-call-site)
(move ebp-tn fp)
-
- (let ((ret-tn (callee-return-pc-tn callee)))
-
- #+nil
- (format t "*known-call-local ~S; tn-kind ~S; tn-save-tn ~S; its tn-kind ~S~%"
- ret-tn (sb!c::tn-kind ret-tn) (sb!c::tn-save-tn ret-tn)
- (sb!c::tn-kind (sb!c::tn-save-tn ret-tn)))
-
- ;; Is the return-pc on the stack or in a register?
- (sc-case ret-tn
- ((sap-stack)
- #+nil (format t "*known-call-local: ret-tn on stack; offset=~S~%"
- (tn-offset ret-tn))
- ;; Stack
- (storew (make-fixup nil :code-object RETURN)
- ebp-tn (frame-word-offset (tn-offset ret-tn))))
- (t
- (error "known-call-local: return-pc not on stack."))))
-
(note-this-location vop :call-site)
- (inst jmp target)
- RETURN
+ (inst call target)
(note-this-location vop :known-return)
(trace-table-entry trace-table-normal)))
\f
:from (:argument 1)
:to (:argument 2))
old-fp-tmp)))
+ ,@(unless (eq return :tail)
+ '((:node-var node)))
(:generator ,(+ (if named 5 0)
(if variable 19 1)
fun-pointer-lowtag)))
,@(ecase return
(:fixed
- '((default-unknown-values vop values nvals)))
+ '((default-unknown-values vop values nvals node)))
(:unknown
'((note-this-location vop :unknown-return)
- (receive-unknown-values values-start nvals start count)))
+ (receive-unknown-values values-start nvals start count
+ node)))
(:tail))
(trace-table-entry trace-table-normal)))))
;;;
;;; EAX -- The lexenv.
;;; EBX -- Available.
-;;; ECX -- The total number of arguments.
+;;; ECX -- The total number of arguments * N-WORD-BYTES.
;;; EDX -- The first arg.
;;; EDI -- The second arg.
;;; ESI -- The third arg.
(inst lea dst (make-ea :dword :base ecx :index ecx))
(maybe-pseudo-atomic stack-allocate-p
(allocation dst dst node stack-allocate-p list-pointer-lowtag)
- (inst shr ecx (1- n-lowtag-bits))
;; Set decrement mode (successive args at lower addresses)
(inst std)
;; Set up the result.
(inst lods eax)
(storew eax dst 0 list-pointer-lowtag)
;; Go back for more.
- (inst sub ecx 1)
+ (inst sub ecx n-word-bytes)
(inst jmp :nz loop)
;; NIL out the last cons.
(storew nil-value dst 1 list-pointer-lowtag)
;; register on -SB-THREAD.
#!+sb-thread
(progn
- (inst cmp (make-ea :dword
- :disp (* thread-stepping-slot n-word-bytes))
- nil-value :fs))
+ #!+win32 (inst push eax-tn)
+ (with-tls-ea (EA :base #!+win32 eax-tn #!-win32 :unused
+ :disp-type :constant
+ :disp (* thread-stepping-slot n-word-bytes))
+ (inst cmp EA nil-value :maybe-fs))
+ #!+win32 (inst pop eax-tn))
#!-sb-thread
(inst cmp (make-ea-for-symbol-value sb!impl::*stepping*)
nil-value))