src/assembly/ppc/support.lisp

   1 (in-package "SB!VM")
   2
   3 (!def-vm-support-routine generate-call-sequence (name style vop)
   4   (ecase style
   5     (:raw
   6      (values
   7       `((inst bla (make-fixup ',name :assembly-routine)))
   8       `()))
   9     (:full-call
  10      (let ((temp (make-symbol "TEMP"))
  11            (nfp-save (make-symbol "NFP-SAVE"))
  12            (lra (make-symbol "LRA")))
  13        (values
  14         `((let ((lra-label (gen-label))
  15                 (cur-nfp (current-nfp-tn ,vop)))
  16             (when cur-nfp
  17               (store-stack-tn ,nfp-save cur-nfp))
  18             (inst compute-lra-from-code ,lra code-tn lra-label ,temp)
  19             (note-next-instruction ,vop :call-site)
  20             (inst ba (make-fixup ',name :assembly-routine))
  21             (emit-return-pc lra-label)
  22             (note-this-location ,vop :single-value-return)
  23             (without-scheduling ()
  24                                 (move csp-tn ocfp-tn)
  25                                 (inst nop))
  26             (inst compute-code-from-lra code-tn code-tn
  27                   lra-label ,temp)
  28             (when cur-nfp
  29               (load-stack-tn cur-nfp ,nfp-save))))
  30         `((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
  31            ,temp)
  32           (:temporary (:sc descriptor-reg :offset lra-offset
  33                        :from (:eval 0) :to (:eval 1))
  34            ,lra)
  35           (:temporary (:scs (control-stack) :offset nfp-save-offset)
  36            ,nfp-save)
  37           (:save-p :compute-only)))))
  38     (:none
  39      (values
  40       `((inst ba  (make-fixup ',name :assembly-routine)))
  41       `()))))
  42
  43 (!def-vm-support-routine generate-return-sequence (style)
  44   (ecase style
  45     (:raw
  46      `((inst blr)))
  47     (:full-call
  48      `((lisp-return (make-random-tn :kind :normal
  49                                     :sc (sc-or-lose 'descriptor-reg )
  50                                     :offset lra-offset)
  51                     (make-random-tn :kind :normal
  52                                     :sc (sc-or-lose 'interior-reg )
  53                                     :offset lip-offset)
  54                     :offset 2)))
  55     (:none)))