(count-okay (gen-label)))
(note-this-location vop :unknown-return)
;; Branch off to the MV case.
- (inst nop)
- (inst jmp-short regs-defaulted)
+ (inst jmp :c regs-defaulted)
;; Default the register args, and set up the stack as if we
;; entered the MV return point.
;; Restore EDI, and reset the stack.
(emit-label restore-edi)
(loadw rdi-tn rbx-tn (- (1+ 1)))
- (inst mov rsp-tn rbx-tn))))
+ (inst mov rsp-tn rbx-tn)
+ (inst cld))))
(values))
\f
;;;; unknown values receiving
do (noise `(loadw ,name new-fp ,index)))
(noise))
'((if (zerop nargs)
- (inst xor rcx rcx)
+ (zeroize rcx)
(inst mov rcx (fixnumize nargs)))))
,@(cond ((eq return :tail)
'(;; Python has figured out what frame we should
;; Establish the values pointer and values count.
(move rbx rbp-tn)
(if (zerop nvals)
- (inst xor rcx rcx) ; smaller
+ (zeroize rcx) ; smaller
(inst mov rcx (fixnumize nvals)))
;; Restore the frame pointer.
(move rbp-tn old-fp)
(:generator 20
;; Avoid the copy if there are no more args.
(cond ((zerop fixed)
- (inst jecxz JUST-ALLOC-FRAME))
+ (inst jrcxz JUST-ALLOC-FRAME))
(t
(inst cmp rcx-tn (fixnumize fixed))
(inst jmp :be JUST-ALLOC-FRAME)))
;; 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
;; and RCX as the loop counter, rather than using RCX for both.
- (inst xor copy-index copy-index)
+ (zeroize copy-index)
;; We used to use REP MOVS here, but on modern x86 it performs
;; much worse than an explicit loop for small blocks.
(move rcx count)
;; Check to see whether there are no args, and just return NIL if so.
(inst mov result nil-value)
- (inst jecxz done)
- (inst lea dst (make-ea :qword :index rcx :scale 2))
+ (inst jrcxz done)
+ (inst lea dst (make-ea :qword :base rcx :index rcx))
(maybe-pseudo-atomic stack-allocate-p
(allocation dst dst node stack-allocate-p)
(inst lea dst (make-ea :byte :base dst :disp list-pointer-lowtag))
(inst sub rcx 1)
(inst jmp :nz loop)
;; NIL out the last cons.
- (storew nil-value dst 1 list-pointer-lowtag))
+ (storew nil-value dst 1 list-pointer-lowtag)
+ (inst cld))
(emit-label done))))
;;; Return the location and size of the &MORE arg glob created by