;;; additional noise in the code object header.
(!def-vm-support-routine select-component-format (component)
(declare (type component component))
- ;; The 1+ here is because for the x86 the first constant is a
- ;; pointer to a list of fixups, or NIL if the code object has none.
- ;; (If I understand correctly, the fixups are needed at GC copy
- ;; time because the X86 code isn't relocatable.)
- ;;
- ;; KLUDGE: It'd be cleaner to have the fixups entry be a named
- ;; element of the CODE (aka component) primitive object. However,
- ;; it's currently a large, tricky, error-prone chore to change
- ;; the layout of any primitive object, so for the foreseeable future
- ;; we'll just live with this ugliness. -- WHN 2002-01-02
- (dotimes (i (1+ code-constants-offset))
+ (dotimes (i code-constants-offset)
(vector-push-extend nil
(ir2-component-constants (component-info component))))
(values))
(: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 :qword
+ :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-frame-op double-float double-reg double-stack movsd)
+ (define-frame-op single-float single-reg single-stack movss)
+ (define-frame-op complex-double-float complex-double-reg complex-double-stack
+ movupd (ea-for-cdf-data-stack variable-home-tn frame-pointer))
+ (define-frame-op complex-single-float complex-single-reg complex-single-stack
+ movq (ea-for-csf-data-stack variable-home-tn frame-pointer))
+ (define-frame-op signed-byte-64 signed-reg signed-stack mov)
+ (define-frame-op unsigned-byte-64 unsigned-reg unsigned-stack mov)
+ (define-frame-op system-area-pointer sap-reg sap-stack mov))
+
+(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-64 signed-stack
+ ancestor-frame-ref/signed-byte-64
+ ancestor-frame-set/signed-byte-64)
+ (unsigned-byte-64 unsigned-stack
+ ancestor-frame-ref/unsigned-byte-64
+ ancestor-frame-set/unsigned-byte-64)
+ (unsigned-byte-63 unsigned-stack
+ ancestor-frame-ref/unsigned-byte-64
+ ancestor-frame-set/unsigned-byte-64)
+ (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)
(inst lea rsp-tn
(make-ea :qword :base rbp-tn
:disp (- (* n-word-bytes
- (max 3 (sb-allocated-size 'stack)))))))
+ (- (max 3 (sb-allocated-size 'stack))
+ sp->fp-offset))))))
(trace-table-entry trace-table-normal)))
;;; or a multiple-call-local. All it does is allocate stack space for the
;;; callee (who has the same size stack as us).
(define-vop (allocate-frame)
- (:results (res :scs (any-reg control-stack))
+ (:results (res :scs (any-reg))
(nfp))
(:info callee)
(:ignore nfp callee)
(:generator 2
- (move res rsp-tn)
+ (inst lea res (make-ea :qword :base rsp-tn
+ :disp (- (* sp->fp-offset n-word-bytes))))
(inst sub rsp-tn (* n-word-bytes (sb-allocated-size 'stack)))))
;;; Allocate a partial frame for passing stack arguments in a full
;;; before it can extend the stack.
(define-vop (allocate-full-call-frame)
(:info nargs)
- (:results (res :scs (any-reg control-stack)))
+ (:results (res :scs (any-reg)))
(:generator 2
- (move res rsp-tn)
+ (inst lea res (make-ea :qword :base rsp-tn
+ :disp (- (* sp->fp-offset n-word-bytes))))
(inst sub rsp-tn (* (max nargs 3) n-word-bytes))))
\f
;;; Emit code needed at the return-point from an unknown-values call
;;; 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)
- (inst cmov :c rsp-tn rbx-tn))
- ((<= 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 rbx-tn rsp-tn)
- (emit-label regs-defaulted)
- (inst mov rsp-tn rbx-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 rax-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) rax-tn))
-
- ;; Fake other registers so it looks like we returned with all the
- ;; registers filled in.
- (move rbx-tn rsp-tn)
- (inst jmp default-stack-slots)
-
- (emit-label regs-defaulted)
-
- (inst mov rax-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 rcx-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 RDX in its first slot temporalily.
- (storew rdx-tn rbx-tn -1))
- (loadw rdx-tn rbx-tn (frame-word-offset i))
- (inst mov tn rdx-tn)))
-
- (emit-label defaulting-done)
- (loadw rdx-tn rbx-tn -1)
- (move rsp-tn rbx-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 RDX by
- ;; pushing it to the stack, it will end up at same
- ;; place as in the (STOREW RDX-TN RBX-TN -1) case
- ;; above.
- (inst push rdx-tn))
- (inst mov (second default) rax-tn))
- (inst jmp defaulting-done)
- (trace-table-entry trace-table-normal)))))))
- (t
- (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 rbx-tn rsp-tn)
- (inst mov rdi-tn nil-value)
- (inst mov rsi-tn rdi-tn)
- ;; Compute a pointer to where to put the [defaulted] stack values.
- (emit-label no-stack-args)
- (inst push rdx-tn)
- (inst push rdi-tn)
- (inst lea rdi-tn
- (make-ea :qword :base rbp-tn
- :disp (frame-byte-offset register-arg-count)))
- ;; Load RAX with NIL so we can quickly store it, and set up
- ;; stuff for the loop.
- (inst mov rax-tn nil-value)
- (inst std)
- (inst mov rcx-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 rdi-tn rbx-tn (frame-word-offset 1))
- ;; Compute the number of stack arguments, and if it's zero or
- ;; less, don't copy any stack arguments.
- (inst sub rcx-tn (fixnumize register-arg-count))
- (inst jmp :le no-stack-args)
-
- ;; Throw away any unwanted args.
- (inst cmp rcx-tn (fixnumize (- nvals register-arg-count)))
- (inst jmp :be count-okay)
- (inst mov rcx-tn (fixnumize (- nvals register-arg-count)))
- (emit-label count-okay)
- ;; Save the number of stack values.
- (inst mov rax-tn rcx-tn)
- ;; Compute a pointer to where the stack args go.
- (inst lea rdi-tn
- (make-ea :qword :base rbp-tn
- :disp (frame-byte-offset register-arg-count)))
- ;; Save ESI, and compute a pointer to where the args come from.
- (storew rsi-tn rbx-tn (frame-word-offset 2))
- (inst lea rsi-tn
- (make-ea :qword :base rbx-tn
- :disp (frame-byte-offset register-arg-count)))
- ;; Do the copy.
- (inst shr rcx-tn word-shift) ; make word count
- (inst std)
- (inst rep)
- (inst movs :qword)
- ;; Restore RSI.
- (loadw rsi-tn rbx-tn (frame-word-offset 2))
- ;; Now we have to default the remaining args. Find out how many.
- (inst sub rax-tn (fixnumize (- nvals register-arg-count)))
- (inst neg rax-tn)
- ;; If none, then just blow out of here.
- (inst jmp :le restore-edi)
- (inst mov rcx-tn rax-tn)
- (inst shr rcx-tn word-shift) ; word count
- ;; Load RAX with NIL for fast storing.
- (inst mov rax-tn nil-value)
- ;; Do the store.
- (emit-label default-stack-vals)
- (inst rep)
- (inst stos rax-tn)
- ;; Restore EDI, and reset the stack.
- (emit-label restore-edi)
- (loadw rdi-tn rbx-tn (frame-word-offset 1))
- (inst mov rsp-tn rbx-tn)
- (inst cld))))
+ (let ((type (sb!c::basic-combination-derived-type node)))
+ (cond
+ ((<= 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 rsp-tn rbx-tn))
+ (t
+ (inst cmov :c rsp-tn rbx-tn))))
+ ((<= 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 rbx-tn rsp-tn)
+ (emit-label regs-defaulted)))
+ (when (< register-arg-count
+ (sb!kernel:values-type-max-value-count type))
+ (inst mov rsp-tn rbx-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 rax-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) rax-tn))
+ ;; Fake other registers so it looks like we returned with all the
+ ;; registers filled in.
+ (move rbx-tn rsp-tn)
+ (inst jmp default-stack-slots)
+ (emit-label regs-defaulted)
+ (inst mov rax-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 rcx-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 RDX in its first slot temporalily.
+ (storew rdx-tn rbx-tn (frame-word-offset sp->fp-offset)))
+ (loadw rdx-tn rbx-tn (frame-word-offset (+ sp->fp-offset i)))
+ (inst mov tn rdx-tn)))
+ (emit-label defaulting-done)
+ (loadw rdx-tn rbx-tn (frame-word-offset sp->fp-offset))
+ (move rsp-tn rbx-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 RDX by
+ ;; pushing it to the stack, it will end up at same
+ ;; place as in the (STOREW RDX-TN RBX-TN -1) case
+ ;; above.
+ (inst push rdx-tn))
+ (inst mov (second default) rax-tn))
+ (inst jmp defaulting-done)
+ (trace-table-entry trace-table-normal)))))))
+ (t
+ (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 rbx-tn rsp-tn)
+ (inst mov rdi-tn nil-value)
+ (inst mov rsi-tn rdi-tn)
+ ;; Compute a pointer to where to put the [defaulted] stack values.
+ (emit-label no-stack-args)
+ (inst push rdx-tn)
+ (inst push rdi-tn)
+ (inst lea rdi-tn
+ (make-ea :qword :base rbp-tn
+ :disp (frame-byte-offset register-arg-count)))
+ ;; Load RAX with NIL so we can quickly store it, and set up
+ ;; stuff for the loop.
+ (inst mov rax-tn nil-value)
+ (inst std)
+ (inst mov rcx-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 rcx-tn (fixnumize register-arg-count))
+ (inst jmp :le no-stack-args)
+ ;; Save EDI.
+ (storew rdi-tn rbx-tn (frame-word-offset (+ sp->fp-offset 1)))
+ ;; Throw away any unwanted args.
+ (inst cmp rcx-tn (fixnumize (- nvals register-arg-count)))
+ (inst jmp :be count-okay)
+ (inst mov rcx-tn (fixnumize (- nvals register-arg-count)))
+ (emit-label count-okay)
+ ;; Save the number of stack values.
+ (inst mov rax-tn rcx-tn)
+ ;; Compute a pointer to where the stack args go.
+ (inst lea rdi-tn
+ (make-ea :qword :base rbp-tn
+ :disp (frame-byte-offset register-arg-count)))
+ ;; Save ESI, and compute a pointer to where the args come from.
+ (storew rsi-tn rbx-tn (frame-word-offset (+ sp->fp-offset 2)))
+ (inst lea rsi-tn
+ (make-ea :qword :base rbx-tn
+ :disp (frame-byte-offset
+ (+ sp->fp-offset register-arg-count))))
+ ;; Do the copy.
+ (inst shr rcx-tn n-fixnum-tag-bits) ; make word count
+ (inst std)
+ (inst rep)
+ (inst movs :qword)
+ ;; Restore RSI.
+ (loadw rsi-tn rbx-tn (frame-word-offset (+ sp->fp-offset 2)))
+ ;; Now we have to default the remaining args. Find out how many.
+ (inst sub rax-tn (fixnumize (- nvals register-arg-count)))
+ (inst neg rax-tn)
+ ;; If none, then just blow out of here.
+ (inst jmp :le restore-edi)
+ (inst mov rcx-tn rax-tn)
+ (inst shr rcx-tn n-fixnum-tag-bits) ; word count
+ ;; Load RAX with NIL for fast storing.
+ (inst mov rax-tn nil-value)
+ ;; Do the store.
+ (emit-label default-stack-vals)
+ (inst rep)
+ (inst stos rax-tn)
+ ;; Restore EDI, and reset the stack.
+ (emit-label restore-edi)
+ (loadw rdi-tn rbx-tn (frame-word-offset (+ sp->fp-offset 1)))
+ (inst mov rsp-tn rbx-tn)
+ (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 :qword :base rsp-tn :disp n-word-bytes)))
- (t (inst mov start rsp-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 :qword :base rsp-tn :disp n-word-bytes)))
+ (t (inst mov start rsp-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 rsp-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)
+ #!+#.(cl:if (cl:= sb!vm:word-shift sb!vm:n-fixnum-tag-bits) '(and) '(or))
+ (inst sub rsp-tn nargs)
+ #!-#.(cl:if (cl:= sb!vm:word-shift sb!vm:n-fixnum-tag-bits) '(and) '(or))
+ (progn
+ ;; FIXME: This can't be efficient, but LEA (my first choice)
+ ;; doesn't do subtraction.
+ (inst shl nargs (- word-shift n-fixnum-tag-bits))
+ (inst sub rsp-tn nargs)
+ (inst shr nargs (- word-shift n-fixnum-tag-bits)))
+ (emit-label stack-values))
;; dtc: this writes the registers onto the stack even if they are
;; not needed, only the number specified in rcx 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)
+ (when (and fall-thru-p trampoline-label)
+ (inst jmp start-label))
+ (when trampoline-label
+ (emit-label trampoline-label)
+ (popw rbp-tn (frame-word-offset return-pc-save-offset)))
+ (when alignp
+ (emit-alignment n-lowtag-bits :long-nop))
+ (emit-label start-label))
+
;;; Non-TR local call for a fixed number of values passed according to
;;; the unknown values convention.
;;;
(:args (fp)
(nfp)
(args :more t))
- (:temporary (:sc unsigned-reg) return-label)
(:results (values :more t))
(:save-p t)
(: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 rbp-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))
- (inst lea return-label (make-fixup nil :code-object RETURN))
- (storew return-label rbp-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
(:args (fp)
(nfp)
(args :more t))
- (:temporary (:sc unsigned-reg) return-label)
(: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 rbp-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
- (inst lea return-label (make-fixup nil :code-object RETURN))
- (storew return-label rbp-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
(:args (fp)
(nfp)
(args :more t))
- (:temporary (:sc unsigned-reg) return-label)
(:results (res :more t))
(: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 rbp-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
- (inst lea return-label (make-fixup nil :code-object RETURN))
- (storew return-label rbp-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
(check-ocfp-and-return-pc old-fp return-pc)
(trace-table-entry trace-table-fun-epilogue)
;; Zot all of the stack except for the old-fp and return-pc.
- (inst lea rsp-tn
- (make-ea :qword :base rbp-tn
- :disp (frame-byte-offset ocfp-save-offset)))
+ (inst mov rsp-tn rbp-tn)
(inst pop rbp-tn)
(inst ret)
(trace-table-entry trace-table-normal)))
: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)
;; Compute the number of arguments.
(noise '(inst mov rcx new-fp))
(noise '(inst sub rcx rsp-tn))
+ #.(unless (= word-shift n-fixnum-tag-bits)
+ '(noise '(inst shr rcx
+ (- word-shift n-fixnum-tag-bits))))
;; Move the necessary args to registers,
;; this moves them all even if they are
;; not all needed.
;; there are at least 3 slots. This hack
;; just adds 3 more.
,(if variable
- '(inst sub rsp-tn (fixnumize 3)))
+ '(inst sub rsp-tn (* 3 n-word-bytes)))
+
+ ;; Bias the new-fp for use as an fp
+ ,(if variable
+ '(inst sub new-fp (* sp->fp-offset n-word-bytes)))
;; Save the fp
(storew rbp-tn new-fp
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)))))
(check-ocfp-and-return-pc old-fp return-pc)
(trace-table-entry trace-table-fun-epilogue)
;; Drop stack above old-fp
- (inst lea rsp-tn (make-ea :qword :base rbp-tn
- :disp (frame-byte-offset (tn-offset old-fp))))
+ (inst mov rsp-tn rbp-tn)
;; Clear the multiple-value return flag
(inst clc)
;; Restore the old frame pointer
(error "nvalues is 1"))
(trace-table-entry trace-table-fun-epilogue)
;; Establish the values pointer and values count.
- (move rbx rbp-tn)
+ (inst lea rbx (make-ea :qword :base rbp-tn
+ :disp (* sp->fp-offset n-word-bytes)))
(if (zerop nvals)
(zeroize rcx) ; smaller
(inst mov rcx (fixnumize nvals)))
- ;; Clear as much of the stack as possible, but not past the old
- ;; frame address.
- (inst lea rsp-tn
- (make-ea :qword :base rbx
- :disp (frame-byte-offset
- (if (< register-arg-count nvals)
- (1- nvals)
- ocfp-save-offset))))
;; Pre-default any argument register that need it.
(when (< nvals register-arg-count)
(let* ((arg-tns (nthcdr nvals (list a0 a1 a2)))
;; stack and we've changed the stack pointer. So we have to
;; tell it to index off of RBX instead of RBP.
(cond ((<= nvals register-arg-count)
+ (inst mov rsp-tn rbp-tn)
(inst pop rbp-tn)
(inst ret))
(t
;; Some values are on the stack after RETURN-PC and OLD-FP,
;; can't return normally and some slots of the frame will
;; be used as temporaries by the receiver.
+ ;;
+ ;; Clear as much of the stack as possible, but not past the
+ ;; old frame address.
+ (inst lea rsp-tn
+ (make-ea :qword :base rbp-tn
+ :disp (frame-byte-offset (1- nvals))))
(move rbp-tn old-fp)
(inst push (make-ea :qword :base rbx
- :disp (frame-byte-offset (tn-offset return-pc))))
+ :disp (frame-byte-offset
+ (+ sp->fp-offset
+ (tn-offset return-pc)))))
(inst ret)))
(trace-table-entry trace-table-normal)))
;;; assembly-routine.
;;;
;;; The assembly routine takes the following args:
-;;; RAX -- the return-pc to finally jump to.
-;;; RBX -- pointer to where to put the values.
;;; RCX -- number of values to find there.
;;; RSI -- pointer to where to find the values.
(define-vop (return-multiple)
(inst jmp :ne not-single)
;; Return with one value.
(loadw a0 vals -1)
- (inst lea rsp-tn (make-ea :qword :base rbp-tn
- :disp (frame-byte-offset ocfp-save-offset)))
+ ;; Clear the stack until ocfp.
+ (inst mov rsp-tn rbp-tn)
;; clear the multiple-value return flag
(inst clc)
;; Out of here.
(inst cmp rcx-tn (fixnumize fixed))
(inst jmp :be JUST-ALLOC-FRAME)))
+ ;; Create a negated copy of the number of arguments to allow us to
+ ;; use EA calculations in order to do scaled subtraction.
+ (inst mov temp rcx-tn)
+ (inst neg temp)
+
;; Allocate the space on the stack.
- ;; stack = rbp - (max 3 frame-size) - (nargs - fixed)
- (inst lea rbx-tn
+ ;; stack = rbp + sp->fp-offset - (max 3 frame-size) - (nargs - fixed)
+ (inst lea rsp-tn
(make-ea :qword :base rbp-tn
- :disp (- (fixnumize fixed)
- (* n-word-bytes
+ :index temp :scale (ash 1 (- word-shift n-fixnum-tag-bits))
+ :disp (* n-word-bytes
+ (- (+ sp->fp-offset fixed)
(max 3 (sb-allocated-size 'stack))))))
- (inst sub rbx-tn rcx-tn) ; Got the new stack in rbx
- (inst mov rsp-tn rbx-tn)
;; Now: nargs>=1 && nargs>fixed
(inst sub rcx-tn (fixnumize fixed))))
;; Initialize R8 to be the end of args.
- (inst mov source rbp-tn)
- (inst sub source rbx-tn)
+ (inst lea source (make-ea :qword :base rbp-tn
+ :index temp :scale (ash 1 (- word-shift n-fixnum-tag-bits))
+ :disp (* sp->fp-offset n-word-bytes)))
;; We need to copy from downwards up to avoid overwriting some of
;; the yet uncopied args. So we need to use R9 as the copy index
(inst mov temp (make-ea :qword :base source :index copy-index))
(inst mov (make-ea :qword :base rsp-tn :index copy-index) temp)
(inst add copy-index n-word-bytes)
- (inst sub rcx-tn n-word-bytes)
+ (inst sub rcx-tn (fixnumize 1))
(inst jmp :nz COPY-LOOP)
DO-REGS
( nil )
;; Store it relative to rbp
(inst mov (make-ea :qword :base rbp-tn
- :disp (- (* n-word-bytes
- (+ 1 (- i fixed)
- (max 3 (sb-allocated-size 'stack))))))
+ :disp (* n-word-bytes
+ (- sp->fp-offset
+ (+ 1
+ (- i fixed)
+ (max 3 (sb-allocated-size
+ 'stack))))))
(nth i *register-arg-tns*))
(incf i)
JUST-ALLOC-FRAME
(inst lea rsp-tn
(make-ea :qword :base rbp-tn
- :disp (- (* n-word-bytes
+ :disp (* n-word-bytes
+ (- sp->fp-offset
(max 3 (sb-allocated-size 'stack))))))
DONE))
(keyword :scs (descriptor-reg any-reg)))
(:result-types * *)
(:generator 4
- (inst mov value (make-ea :qword :base object :index index))
+ (inst mov value (make-ea :qword :base object :index index
+ :scale (ash 1 (- word-shift n-fixnum-tag-bits))))
(inst mov keyword (make-ea :qword :base object :index index
+ :scale (ash 1 (- word-shift n-fixnum-tag-bits))
:disp n-word-bytes))))
(define-vop (more-arg)
(:generator 4
(move value index)
(inst neg value)
- (inst mov value (make-ea :qword :base object :index value))))
+ (inst mov value (make-ea :qword :base object :index value
+ :scale (ash 1 (- word-shift n-fixnum-tag-bits))))))
;;; Turn more arg (context, count) into a list.
(define-vop (listify-rest-args)
;; Check to see whether there are no args, and just return NIL if so.
(inst mov result nil-value)
(inst jrcxz done)
- (inst lea dst (make-ea :qword :base rcx :index rcx))
+ (inst lea dst (make-ea :qword :index rcx :scale (ash 2 (- word-shift n-fixnum-tag-bits))))
(maybe-pseudo-atomic stack-allocate-p
(allocation dst dst node stack-allocate-p list-pointer-lowtag)
- (inst shr rcx (1- n-lowtag-bits))
;; Set decrement mode (successive args at lower addresses)
(inst std)
;; Set up the result.
(storew dst dst -1 list-pointer-lowtag)
(emit-label enter)
;; Grab one value and stash it in the car of this cons.
- (inst lods rax)
+ (inst mov rax (make-ea :qword :base src))
+ (inst sub src n-word-bytes)
(storew rax dst 0 list-pointer-lowtag)
;; Go back for more.
- (inst sub rcx 1)
+ (inst sub rcx (fixnumize 1))
(inst jmp :nz loop)
;; NIL out the last cons.
(storew nil-value dst 1 list-pointer-lowtag)
;; SP at this point points at the last arg pushed.
;; Point to the first more-arg, not above it.
(inst lea context (make-ea :qword :base rsp-tn
- :index count :scale 1
- :disp (- (+ (fixnumize fixed) n-word-bytes))))
+ :index count
+ :scale (ash 1 (- word-shift n-fixnum-tag-bits))
+ :disp (- (* (1+ fixed) n-word-bytes))))
(unless (zerop fixed)
(inst sub count (fixnumize fixed)))))
projects / sbcl.git / blobdiff