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;;; -*- Package: SPARC -*-
;;;
;;; **********************************************************************
;;; This code was written as part of the Spice Lisp project at
;;; Carnegie-Mellon University, and has been placed in the public domain.
;;; If you want to use this code or any part of Spice Lisp, please contact
;;; Scott Fahlman (FAHLMAN@CMUC).
;;; **********************************************************************
;;;
;;; $Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/assembly/sparc/support.lisp,v 1.1 1990/11/22 11:51:46 wlott Exp $
;;;
;;; This file contains the machine specific support routines needed by
;;; the file assembler.
;;;
(in-package "SPARC")
(def-vm-support-routine generate-call-sequence (name style vop)
(ecase style
(:raw
(let ((temp (make-symbol "TEMP"))
(lip (make-symbol "LIP")))
(values
`((inst li ,temp (make-fixup ',name :assembly-routine))
(inst jal ,lip ,temp)
(inst nop))
`((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
,temp)
(:temporary (:scs (interior-reg) :from (:eval 0) :to (:eval 1))
,lip)))))
(:full-call
(let ((temp (make-symbol "TEMP"))
(nfp-save (make-symbol "NFP-SAVE"))
(lra (make-symbol "LRA")))
(values
`((let ((lra-label (gen-label))
(cur-nfp (current-nfp-tn ,vop)))
(when cur-nfp
(store-stack-tn ,nfp-save cur-nfp))
(inst compute-lra-from-code ,lra code-tn lra-label ,temp)
(inst li ,temp (make-fixup ',name :assembly-routine))
(inst j ,temp)
(inst nop)
(emit-return-pc lra-label)
(note-this-location ,vop :unknown-return)
(move csp-tn ocfp-tn)
(inst nop)
(inst compute-code-from-lra code-tn code-tn
lra-label ,temp)
(when cur-nfp
(load-stack-tn cur-nfp ,nfp-save))))
`((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
,temp)
(:temporary (:sc descriptor-reg :offset lra-offset
:from (:eval 0) :to (:eval 1))
,lra)
(:temporary (:scs (control-stack) :offset nfp-save-offset)
,nfp-save)))))
(:none
(let ((temp (make-symbol "TEMP")))
(values
`((inst li ,temp (make-fixup ',name :assembly-routine))
(inst j ,temp)
(inst nop))
`((:temporary (:scs (non-descriptor-reg) :from (:eval 0) :to (:eval 1))
,temp)))))))
(def-vm-support-routine generate-return-sequence (style)
(ecase style
(:raw
`((inst j (make-random-tn :kind :normal
:sc (sc-or-lose 'interior-reg *backend*)
:offset lip-offset))
(inst nop)))
(:full-call
`((lisp-return (make-random-tn :kind :normal
:sc (sc-or-lose 'descriptor-reg *backend*)
:offset lra-offset)
:offset 2)))
(:none)))