(when nfp
(inst addu val nfp (bytes-needed-for-non-descriptor-stack-frame))))))
+;;; 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 (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 (tn-offset variable-home-tn))))
(define-vop (xep-allocate-frame)
(:info start-lab copy-more-arg-follows)
(:generator 1
;; Make sure the function is aligned, and drop a label pointing to this
;; function header.
- (align n-lowtag-bits)
+ (emit-alignment n-lowtag-bits)
(trace-table-entry trace-table-fun-prologue)
(emit-label start-lab)
;; Allocate function header.
(when lra-label
(inst compute-code-from-lra code-tn code-tn lra-label temp))
- (inst addu csp-tn csp-tn 4)
+ (inst addu csp-tn csp-tn n-word-bytes)
(storew (first *register-arg-tns*) csp-tn -1)
- (inst addu start csp-tn -4)
+ (inst addu start csp-tn (- n-word-bytes))
(inst li count (fixnumize 1))
(emit-label done)
nvals)
(:temporary (:scs (non-descriptor-reg)) temp))
+\f
+;;; This hook in the codegen pass lets us insert code before fall-thru entry
+;;; points, local-call entry points, and tail-call entry points. The default
+;;; does nothing.
+(defun emit-block-header (start-label trampoline-label fall-thru-p alignp)
+ (declare (ignore fall-thru-p alignp))
+ (when trampoline-label
+ (emit-label trampoline-label))
+ (emit-label start-label))
\f
;;;; Local call with unknown values convention return:
'((:temporary (:scs (non-descriptor-reg)) temp)
(:temporary (:sc control-stack :offset nfp-save-offset) nfp-save)))
- (:temporary (:sc interior-reg :offset lip-offset) entry-point)
+ (:temporary (:sc interior-reg) entry-point)
(:generator ,(+ (if named 5 0)
(if variable 19 1)
(insert-step-instrumenting (callable-tn)
;; Conditionally insert a conditional trap:
(when step-instrumenting
- ;; Get the symbol-value of SB!IMPL::*STEPPING*
- (inst lw stepping null-tn
- (- (+ symbol-value-slot
- (truncate (static-symbol-offset 'sb!impl::*stepping*)
- n-word-bytes))
- other-pointer-lowtag))
- ;; If it's not null, trap.
- (inst beq stepping step-done-label)
+ (load-symbol-value stepping sb!impl::*stepping*)
+ ;; If it's not NIL, trap.
+ (inst beq stepping null-tn step-done-label)
(inst nop)
;; CONTEXT-PC will be pointing here when the
;; interrupt is handled, not after the BREAK.
(define-full-reffer more-arg * 0 0 (descriptor-reg any-reg) * %more-arg)
;;; Turn more arg (context, count) into a list.
-(defoptimizer (%listify-rest-args stack-allocate-result) ((&rest args))
- t)
-
(define-vop (listify-rest-args)
(:args (context-arg :target context :scs (descriptor-reg))
(count-arg :target count :scs (any-reg)))
(move context context-arg)
(move count count-arg)
;; Check to see if there are any arguments.
- (inst beq count zero-tn done)
+ (inst beq count done)
(move result null-tn t)
;; We need to do this atomically.
;; Dec count, and if != zero, go back for more.
(inst addu count count (fixnumize -1))
- (inst bne count zero-tn loop)
+ (inst bne count loop)
;; Store the value in the car (in delay slot)
(storew temp dst 0 list-pointer-lowtag)
(let ((err-lab
(generate-error-code vop invalid-arg-count-error nargs)))
(cond ((zerop count)
- (inst bne nargs zero-tn err-lab)
+ (inst bne nargs err-lab)
(inst nop))
(t
(inst li temp (fixnumize count))
(:policy :fast-safe)
(:vop-var vop)
(:generator 3
- ;; Get the symbol-value of SB!IMPL::*STEPPING*
- (inst lw stepping null-tn
- (- (+ symbol-value-slot
- (truncate (static-symbol-offset 'sb!impl::*stepping*)
- n-word-bytes))
- other-pointer-lowtag))
- ;; If it's not null, trap.
- (inst beq stepping DONE)
+ (load-symbol-value stepping sb!impl::*stepping*)
+ ;; If it's not NIL, trap.
+ (inst beq stepping null-tn DONE)
(inst nop)
;; CONTEXT-PC will be pointing here when the interrupt is handled,
;; not after the BREAK.
(note-this-location vop :step-before-vop)
;; CALLEE-REGISTER-OFFSET isn't needed for before-traps, so we
;; can just use a bare SINGLE-STEP-BEFORE-TRAP as the code.
- (inst break single-step-before-trap)
+ (inst break 0 single-step-before-trap)
DONE))