-;;; -*- Package: ALPHA -*-
-;;;
-;;; **********************************************************************
-;;; This code was written as part of the CMU Common Lisp project at
-;;; Carnegie Mellon University, and has been placed in the public domain.
-;;;
+;;;; the definitions of VOPs used for non-local exit (THROW, lexical
+;;;; exit, etc.)
+
+;;;; This software is part of the SBCL system. See the README file for
+;;;; more information.
+;;;;
+;;;; This software is derived from the CMU CL system, which was
+;;;; written at Carnegie Mellon University and released into the
+;;;; public domain. The software is in the public domain and is
+;;;; provided with absolutely no warranty. See the COPYING and CREDITS
+;;;; files for more information.
-;;;
-;;; **********************************************************************
-;;;
-;;; This file contains the definitions of VOPs used for non-local exit
-;;; (throw, lexical exit, etc.)
-;;;
-;;; Written by Rob MacLachlan
-;;; Conversion by Sean Hallgren
-;;;
(in-package "SB!VM")
-
-;;; MAKE-NLX-SP-TN -- Interface
-;;;
-;;; Make an environment-live stack TN for saving the SP for NLX entry.
-;;;
-(!def-vm-support-routine make-nlx-sp-tn (env)
- (environment-live-tn
+;;; Make an environment-live stack TN for saving the SP for NLX entry.
+(defun make-nlx-sp-tn (env)
+ (physenv-live-tn
(make-representation-tn *fixnum-primitive-type* immediate-arg-scn)
env))
-;;; Make-NLX-Entry-Argument-Start-Location -- Interface
-;;;
-;;; Make a TN for the argument count passing location for a
+;;; Make a TN for the argument count passing location for a
;;; non-local entry.
-;;;
-(!def-vm-support-routine make-nlx-entry-argument-start-location ()
+(defun make-nlx-entry-arg-start-location ()
(make-wired-tn *fixnum-primitive-type* immediate-arg-scn ocfp-offset))
-
\f
-;;; Save and restore dynamic environment.
-;;;
-;;; These VOPs are used in the reentered function to restore the appropriate
-;;; dynamic environment. Currently we only save the Current-Catch and binding
-;;; stack pointer. We don't need to save/restore the current unwind-protect,
-;;; since unwind-protects are implicitly processed during unwinding. If there
-;;; were any additional stacks, then this would be the place to restore the top
-;;; pointers.
-
-
-;;; Make-Dynamic-State-TNs -- Interface
-;;;
-;;; Return a list of TNs that can be used to snapshot the dynamic state for
-;;; use with the Save/Restore-Dynamic-Environment VOPs.
-;;;
-(!def-vm-support-routine make-dynamic-state-tns ()
- (list (make-normal-tn *backend-t-primitive-type*)
- (make-normal-tn *backend-t-primitive-type*)
- (make-normal-tn *backend-t-primitive-type*)
- (make-normal-tn *backend-t-primitive-type*)))
+;;;; save and restoring the dynamic environment
+;;;;
+;;;; These VOPs are used in the reentered function to restore the
+;;;; appropriate dynamic environment. Currently we only save the
+;;;; CURRENT-CATCH and binding stack pointer. We don't need to
+;;;; save/restore the current UNWIND-PROTECT, since UNWIND-PROTECTS
+;;;; are implicitly processed during unwinding. If there were any
+;;;; additional stacks (as e.g. there was an interpreter "eval stack"
+;;;; before sbcl-0.7.0), then this would be the place to restore the
+;;;; top pointers.
(define-vop (save-dynamic-state)
(:results (catch :scs (descriptor-reg))
- (nfp :scs (descriptor-reg))
- (nsp :scs (descriptor-reg))
- (eval :scs (descriptor-reg)))
+ (nfp :scs (descriptor-reg))
+ (nsp :scs (descriptor-reg)))
(:vop-var vop)
(:generator 13
- (load-symbol-value catch sb!impl::*current-catch-block*)
+ (load-symbol-value catch *current-catch-block*)
(let ((cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (inst mskll cur-nfp 4 nfp)))
- (inst mskll nsp-tn 4 nsp)
- (load-symbol-value eval sb!impl::*eval-stack-top*)))
+ (inst mskll cur-nfp 4 nfp)))
+ (inst mskll nsp-tn 4 nsp)))
(define-vop (restore-dynamic-state)
(:args (catch :scs (descriptor-reg))
- (nfp :scs (descriptor-reg))
- (nsp :scs (descriptor-reg))
- (eval :scs (descriptor-reg)))
+ (nfp :scs (descriptor-reg))
+ (nsp :scs (descriptor-reg)))
(:vop-var vop)
(:temporary (:sc any-reg) temp)
(:generator 10
- (store-symbol-value catch sb!impl::*current-catch-block*)
- (store-symbol-value eval sb!impl::*eval-stack-top*)
+ (store-symbol-value catch *current-catch-block*)
(inst mskll nsp-tn 0 temp)
(let ((cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (inst bis nfp temp cur-nfp)))
+ (inst bis nfp temp cur-nfp)))
(inst bis nsp temp nsp-tn)))
(define-vop (current-stack-pointer)
(:results (res :scs (any-reg descriptor-reg)))
(:generator 1
(move bsp-tn res)))
-
-
\f
-;;;; Unwind block hackery:
+;;;; unwind block hackery
-;;; Compute the address of the catch block from its TN, then store into the
-;;; block the current Fp, Env, Unwind-Protect, and the entry PC.
-;;;
+;;; Compute the address of the catch block from its TN, then store
+;;; into the block the current Fp, Env, Unwind-Protect, and the entry PC.
(define-vop (make-unwind-block)
(:args (tn))
(:info entry-label)
(:temporary (:scs (descriptor-reg)) temp)
(:temporary (:scs (non-descriptor-reg)) ndescr)
(:generator 22
- (inst lda block (* (tn-offset tn) sb!vm:word-bytes) cfp-tn)
- (load-symbol-value temp sb!impl::*current-unwind-protect-block*)
- (storew temp block sb!vm:unwind-block-current-uwp-slot)
- (storew cfp-tn block sb!vm:unwind-block-current-cont-slot)
- (storew code-tn block sb!vm:unwind-block-current-code-slot)
+ (inst lda block (* (tn-offset tn) n-word-bytes) cfp-tn)
+ (load-symbol-value temp *current-unwind-protect-block*)
+ (storew temp block unwind-block-current-uwp-slot)
+ (storew cfp-tn block unwind-block-current-cont-slot)
+ (storew code-tn block unwind-block-current-code-slot)
(inst compute-lra-from-code temp code-tn entry-label ndescr)
- (storew temp block sb!vm:catch-block-entry-pc-slot)))
+ (storew temp block catch-block-entry-pc-slot)))
-;;; Like Make-Unwind-Block, except that we also store in the specified tag, and
-;;; link the block into the Current-Catch list.
-;;;
+;;; This is like Make-Unwind-Block, except that we also store in the
+;;; specified tag, and link the block into the Current-Catch list.
(define-vop (make-catch-block)
(:args (tn)
- (tag :scs (descriptor-reg)))
+ (tag :scs (any-reg descriptor-reg)))
(:info entry-label)
(:results (block :scs (any-reg)))
(:temporary (:scs (descriptor-reg)) temp)
(:temporary (:scs (descriptor-reg) :target block :to (:result 0)) result)
(:temporary (:scs (non-descriptor-reg)) ndescr)
(:generator 44
- (inst lda result (* (tn-offset tn) sb!vm:word-bytes) cfp-tn)
- (load-symbol-value temp sb!impl::*current-unwind-protect-block*)
- (storew temp result sb!vm:catch-block-current-uwp-slot)
- (storew cfp-tn result sb!vm:catch-block-current-cont-slot)
- (storew code-tn result sb!vm:catch-block-current-code-slot)
+ (inst lda result (* (tn-offset tn) n-word-bytes) cfp-tn)
+ (load-symbol-value temp *current-unwind-protect-block*)
+ (storew temp result catch-block-current-uwp-slot)
+ (storew cfp-tn result catch-block-current-cont-slot)
+ (storew code-tn result catch-block-current-code-slot)
(inst compute-lra-from-code temp code-tn entry-label ndescr)
- (storew temp result sb!vm:catch-block-entry-pc-slot)
+ (storew temp result catch-block-entry-pc-slot)
- (storew tag result sb!vm:catch-block-tag-slot)
- (load-symbol-value temp sb!impl::*current-catch-block*)
- (storew temp result sb!vm:catch-block-previous-catch-slot)
- (store-symbol-value result sb!impl::*current-catch-block*)
+ (storew tag result catch-block-tag-slot)
+ (load-symbol-value temp *current-catch-block*)
+ (storew temp result catch-block-previous-catch-slot)
+ (store-symbol-value result *current-catch-block*)
(move result block)))
-
-;;; Just set the current unwind-protect to TN's address. This instantiates an
-;;; unwind block as an unwind-protect.
-;;;
+;;; Just set the current unwind-protect to TN's address. This
+;;; instantiates an unwind block as an unwind-protect.
(define-vop (set-unwind-protect)
(:args (tn))
(:temporary (:scs (descriptor-reg)) new-uwp)
(:generator 7
- (inst lda new-uwp (* (tn-offset tn) sb!vm:word-bytes) cfp-tn)
- (store-symbol-value new-uwp sb!impl::*current-unwind-protect-block*)))
-
+ (inst lda new-uwp (* (tn-offset tn) n-word-bytes) cfp-tn)
+ (store-symbol-value new-uwp *current-unwind-protect-block*)))
(define-vop (unlink-catch-block)
(:temporary (:scs (any-reg)) block)
(:policy :fast-safe)
(:translate %catch-breakup)
(:generator 17
- (load-symbol-value block sb!impl::*current-catch-block*)
- (loadw block block sb!vm:catch-block-previous-catch-slot)
- (store-symbol-value block sb!impl::*current-catch-block*)))
+ (load-symbol-value block *current-catch-block*)
+ (loadw block block catch-block-previous-catch-slot)
+ (store-symbol-value block *current-catch-block*)))
(define-vop (unlink-unwind-protect)
(:temporary (:scs (any-reg)) block)
(:policy :fast-safe)
(:translate %unwind-protect-breakup)
(:generator 17
- (load-symbol-value block sb!impl::*current-unwind-protect-block*)
- (loadw block block sb!vm:unwind-block-current-uwp-slot)
- (store-symbol-value block sb!impl::*current-unwind-protect-block*)))
-
+ (load-symbol-value block *current-unwind-protect-block*)
+ (loadw block block unwind-block-current-uwp-slot)
+ (store-symbol-value block *current-unwind-protect-block*)))
\f
-;;;; NLX entry VOPs:
-
+;;;; NLX entry VOPs
(define-vop (nlx-entry)
(:args (sp) ; Note: we can't list an sc-restriction, 'cause any load vops
- ; would be inserted before the LRA.
- (start)
- (count))
+ ; would be inserted before the LRA.
+ (start)
+ (count))
(:results (values :more t))
(:temporary (:scs (descriptor-reg)) move-temp)
(:temporary (:sc non-descriptor-reg) temp)
(emit-return-pc label)
(note-this-location vop :non-local-entry)
(cond ((zerop nvals))
- ((= nvals 1)
- (let ((no-values (gen-label)))
- (move null-tn (tn-ref-tn values))
- (inst beq count no-values)
- (loadw (tn-ref-tn values) start)
- (emit-label no-values)))
- (t
- (collect ((defaults))
- (do ((i 0 (1+ i))
- (tn-ref values (tn-ref-across tn-ref)))
- ((null tn-ref))
- (let ((default-lab (gen-label))
- (tn (tn-ref-tn tn-ref)))
- (defaults (cons default-lab tn))
-
- (inst move count temp)
- (inst lda count (fixnumize -1) count)
- (inst beq temp default-lab)
- (sc-case tn
- ((descriptor-reg any-reg)
- (loadw tn start i))
- (control-stack
- (loadw move-temp start i)
- (store-stack-tn tn move-temp)))))
-
- (let ((defaulting-done (gen-label)))
-
- (emit-label defaulting-done)
-
- (assemble (*elsewhere*)
- (dolist (def (defaults))
- (emit-label (car def))
- (let ((tn (cdr def)))
- (sc-case tn
- ((descriptor-reg any-reg)
- (move null-tn tn))
- (control-stack
- (store-stack-tn tn null-tn)))))
- (inst br zero-tn defaulting-done))))))
+ ((= nvals 1)
+ (let ((no-values (gen-label)))
+ (move null-tn (tn-ref-tn values))
+ (inst beq count no-values)
+ (loadw (tn-ref-tn values) start)
+ (emit-label no-values)))
+ (t
+ (collect ((defaults))
+ (do ((i 0 (1+ i))
+ (tn-ref values (tn-ref-across tn-ref)))
+ ((null tn-ref))
+ (let ((default-lab (gen-label))
+ (tn (tn-ref-tn tn-ref)))
+ (defaults (cons default-lab tn))
+
+ (inst move count temp)
+ (inst lda count (fixnumize -1) count)
+ (inst beq temp default-lab)
+ (sc-case tn
+ ((descriptor-reg any-reg)
+ (loadw tn start i))
+ (control-stack
+ (loadw move-temp start i)
+ (store-stack-tn tn move-temp)))))
+
+ (let ((defaulting-done (gen-label)))
+
+ (emit-label defaulting-done)
+
+ (assemble (*elsewhere*)
+ (dolist (def (defaults))
+ (emit-label (car def))
+ (let ((tn (cdr def)))
+ (sc-case tn
+ ((descriptor-reg any-reg)
+ (move null-tn tn))
+ (control-stack
+ (store-stack-tn tn null-tn)))))
+ (inst br zero-tn defaulting-done))))))
(load-stack-tn csp-tn sp)))
-
(define-vop (nlx-entry-multiple)
(:args (top :target dst) (start :target src) (count :target num))
;; Again, no SC restrictions for the args, 'cause the loading would
(emit-return-pc label)
(note-this-location vop :non-local-entry)
(let ((loop (gen-label))
- (done (gen-label)))
+ (done (gen-label)))
;; Copy args.
(load-stack-tn dst top)
;; Establish results.
(sc-case new-start
- (any-reg (move dst new-start))
- (control-stack (store-stack-tn new-start dst)))
+ (any-reg (move dst new-start))
+ (control-stack (store-stack-tn new-start dst)))
(sc-case new-count
- (any-reg (inst move num new-count))
- (control-stack (store-stack-tn new-count num)))
+ (any-reg (inst move num new-count))
+ (control-stack (store-stack-tn new-count num)))
(inst beq num done)
;; Copy stuff on stack.
(emit-label loop)
(loadw temp src)
- (inst lda src sb!vm:word-bytes src)
+ (inst lda src n-word-bytes src)
(storew temp dst)
(inst lda num (fixnumize -1) num)
- (inst lda dst sb!vm:word-bytes dst)
+ (inst lda dst n-word-bytes dst)
(inst bne num loop)
(emit-label done)
(inst move dst csp-tn))))
-
;;; This VOP is just to force the TNs used in the cleanup onto the stack.
-;;;
(define-vop (uwp-entry)
(:info label)
(:save-p :force-to-stack)
projects / sbcl.git / blobdiff