-;;;
-;;; **********************************************************************
-;;; This code was written as part of the CMU Common Lisp project at
-;;; Carnegie Mellon University, and has been placed in the public domain.
-;;;
-
-;;;
-;;; **********************************************************************
-;;;
-;;; This file contains the VM definition of function call for the Alpha.
-;;;
-;;; Written by Rob MacLachlan
-;;;
-;;; Converted for the Alpha by Sean Hallgren
-;;;
-(in-package "SB!VM")
+;;;; the VM definition of function call for the Alpha
+;;;; 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.
+(in-package "SB!VM")
\f
-;;;; Interfaces to IR2 conversion:
+;;;; interfaces to IR2 conversion
-;;; Standard-Argument-Location -- Interface
-;;;
-;;; Return a wired TN describing the N'th full call argument passing
+;;; Return a wired TN describing the N'th full call argument passing
;;; location.
-;;;
-(!def-vm-support-routine standard-argument-location (n)
+(!def-vm-support-routine standard-arg-location (n)
(declare (type unsigned-byte n))
(if (< n register-arg-count)
(make-wired-tn *backend-t-primitive-type*
- register-arg-scn
- (elt *register-arg-offsets* n))
+ register-arg-scn
+ (elt *register-arg-offsets* n))
(make-wired-tn *backend-t-primitive-type*
- control-stack-arg-scn n)))
+ control-stack-arg-scn n)))
-;;; Make-Return-PC-Passing-Location -- Interface
-;;;
-;;; Make a passing location TN for a local call return PC. If standard is
-;;; true, then use the standard (full call) location, otherwise use any legal
-;;; location. Even in the non-standard case, this may be restricted by a
-;;; desire to use a subroutine call instruction.
-;;;
+;;; Make a passing location TN for a local call return PC. If standard
+;;; is true, then use the standard (full call) location, otherwise use
+;;; any legal location. Even in the non-standard case, this may be
+;;; restricted by a desire to use a subroutine call instruction.
(!def-vm-support-routine make-return-pc-passing-location (standard)
- #!+gengc (declare (ignore standard))
- #!-gengc
(if standard
(make-wired-tn *backend-t-primitive-type* register-arg-scn lra-offset)
- (make-restricted-tn *backend-t-primitive-type* register-arg-scn))
- #!+gengc
- (make-wired-tn *fixnum-primitive-type* immediate-arg-scn ra-offset))
+ (make-restricted-tn *backend-t-primitive-type* register-arg-scn)))
-;;; Make-Old-FP-Passing-Location -- Interface
-;;;
-;;; Similar to Make-Return-PC-Passing-Location, but makes a location to pass
-;;; Old-FP in. This is (obviously) wired in the standard convention, but is
-;;; totally unrestricted in non-standard conventions, since we can always fetch
-;;; it off of the stack using the arg pointer.
-;;;
+;;; This is similar to MAKE-RETURN-PC-PASSING-LOCATION, but makes a
+;;; location to pass OLD-FP in. This is (obviously) wired in the
+;;; standard convention, but is totally unrestricted in non-standard
+;;; conventions, since we can always fetch it off of the stack using
+;;; the arg pointer.
(!def-vm-support-routine make-old-fp-passing-location (standard)
(if standard
(make-wired-tn *fixnum-primitive-type* immediate-arg-scn ocfp-offset)
(make-normal-tn *fixnum-primitive-type*)))
-;;; Make-Old-FP-Save-Location, Make-Return-PC-Save-Location -- Interface
-;;;
-;;; Make the TNs used to hold Old-FP and Return-PC within the current
-;;; function. We treat these specially so that the debugger can find them at a
-;;; known location.
-;;;
+;;; These functions make the TNs used to hold Old-FP and Return-PC
+;;; within the current function. We treat these specially so that the
+;;; debugger can find them at a known location.
(!def-vm-support-routine make-old-fp-save-location (env)
(specify-save-tn
- (environment-debug-live-tn (make-normal-tn *fixnum-primitive-type*) env)
+ (physenv-debug-live-tn (make-normal-tn *fixnum-primitive-type*) env)
(make-wired-tn *fixnum-primitive-type*
- control-stack-arg-scn
- ocfp-save-offset)))
-;;;
+ control-stack-arg-scn
+ ocfp-save-offset)))
(!def-vm-support-routine make-return-pc-save-location (env)
- (let ((ptype #!-gengc *backend-t-primitive-type*
- #!+gengc *fixnum-primitive-type*))
+ (let ((ptype *backend-t-primitive-type*))
(specify-save-tn
- (environment-debug-live-tn (make-normal-tn ptype) env)
- (make-wired-tn ptype control-stack-arg-scn
- #!-gengc lra-save-offset #!+gengc ra-save-offset))))
+ (physenv-debug-live-tn (make-normal-tn ptype) env)
+ (make-wired-tn ptype control-stack-arg-scn lra-save-offset))))
-;;; Make-Argument-Count-Location -- Interface
-;;;
-;;; Make a TN for the standard argument count passing location. We only
-;;; need to make the standard location, since a count is never passed when we
-;;; are using non-standard conventions.
-;;;
-(!def-vm-support-routine make-argument-count-location ()
+;;; Make a TN for the standard argument count passing location. We
+;;; only need to make the standard location, since a count is never
+;;; passed when we are using non-standard conventions.
+(!def-vm-support-routine make-arg-count-location ()
(make-wired-tn *fixnum-primitive-type* immediate-arg-scn nargs-offset))
-;;; MAKE-NFP-TN -- Interface
-;;;
-;;; Make a TN to hold the number-stack frame pointer. This is allocated
-;;; once per component, and is component-live.
-;;;
+;;; Make a TN to hold the number-stack frame pointer. This is
+;;; allocated once per component, and is component-live.
(!def-vm-support-routine make-nfp-tn ()
(component-live-tn
(make-wired-tn *fixnum-primitive-type* immediate-arg-scn nfp-offset)))
-;;; MAKE-STACK-POINTER-TN ()
-;;;
(!def-vm-support-routine make-stack-pointer-tn ()
(make-normal-tn *fixnum-primitive-type*))
-;;; MAKE-NUMBER-STACK-POINTER-TN ()
-;;;
(!def-vm-support-routine make-number-stack-pointer-tn ()
(make-normal-tn *fixnum-primitive-type*))
-;;; Make-Unknown-Values-Locations -- Interface
-;;;
-;;; Return a list of TNs that can be used to represent an unknown-values
-;;; continuation within a function.
-;;;
+;;; Return a list of TNs that can be used to represent an
+;;; unknown-values continuation within a function.
(!def-vm-support-routine make-unknown-values-locations ()
(list (make-stack-pointer-tn)
- (make-normal-tn *fixnum-primitive-type*)))
+ (make-normal-tn *fixnum-primitive-type*)))
-;;; Select-Component-Format -- Interface
-;;;
-;;; This function is called by the Entry-Analyze phase, allowing
-;;; VM-dependent initialization of the IR2-Component structure. We push
-;;; placeholder entries in the Constants to leave room for additional
-;;; noise in the code object header.
-;;;
+;;; This function is called by the ENTRY-ANALYZE phase, allowing
+;;; VM-dependent initialization of the IR2-COMPONENT structure. We
+;;; push placeholder entries in the CONSTANTS to leave room for
+;;; additional noise in the code object header.
(!def-vm-support-routine select-component-format (component)
(declare (type component component))
(dotimes (i code-constants-offset)
(vector-push-extend nil
- (ir2-component-constants (component-info component))))
+ (ir2-component-constants (component-info component))))
(values))
\f
-;;;; Frame hackery:
+;;;; frame hackery
-;;; BYTES-NEEDED-FOR-NON-DESCRIPTOR-STACK-FRAME -- internal
-;;;
-;;; Return the number of bytes needed for the current non-descriptor stack
-;;; frame. Non-descriptor stack frames must be multiples of 8 bytes on
-;;; the PMAX.
-;;;
+;;; Return the number of bytes needed for the current non-descriptor
+;;; stack frame. Non-descriptor stack frames must be multiples of 8
+;;; bytes on the PMAX.
(defun bytes-needed-for-non-descriptor-stack-frame ()
(* (logandc2 (1+ (sb-allocated-size 'non-descriptor-stack)) 1)
- word-bytes))
+ n-word-bytes))
-;;; Used for setting up the Old-FP in local call.
-;;;
+;;; This is used for setting up the Old-FP in local call.
(define-vop (current-fp)
(:results (val :scs (any-reg)))
(:generator 1
(move cfp-tn val)))
-;;; Used for computing the caller's NFP for use in known-values return. Only
-;;; works assuming there is no variable size stuff on the nstack.
-;;;
+;;; This is used for computing the caller's NFP for use in
+;;; known-values return. It only works assuming there is no variable
+;;; size stuff on the nstack.
(define-vop (compute-old-nfp)
(:results (val :scs (any-reg)))
(:vop-var vop)
(:generator 1
(let ((nfp (current-nfp-tn vop)))
(when nfp
- (inst addq nfp (bytes-needed-for-non-descriptor-stack-frame) val)))))
+ (inst addq nfp (bytes-needed-for-non-descriptor-stack-frame) val)))))
+;;; 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)
(:vop-var vop)
(:temporary (:scs (non-descriptor-reg)) temp)
(:generator 1
- ;; Make sure the function is aligned, and drop a label pointing to this
- ;; function header.
- (align lowtag-bits)
- (trace-table-entry trace-table-function-prologue)
+ ;; Make sure the function is aligned, and drop a label pointing to
+ ;; this function header.
+ (emit-alignment n-lowtag-bits)
+ (trace-table-entry trace-table-fun-prologue)
(emit-label start-lab)
;; Allocate function header.
- (inst function-header-word)
- (dotimes (i (1- function-code-offset))
+ (inst simple-fun-header-word)
+ (dotimes (i (1- simple-fun-code-offset))
(inst lword 0))
;; The start of the actual code.
;; Compute CODE from the address of this entry point.
(let ((entry-point (gen-label)))
(emit-label entry-point)
- (inst compute-code-from-fn code-tn lip-tn entry-point temp)
- ;; ### We should also save it on the stack so that the garbage collector
- ;; won't forget about us if we call anyone else.
+ (inst compute-code-from-lip code-tn lip-tn entry-point temp)
+ ;; ### We should also save it on the stack so that the garbage
+ ;; collector won't forget about us if we call anyone else.
)
;; Build our stack frames.
- (inst lda csp-tn (* word-bytes (sb-allocated-size 'control-stack)) cfp-tn)
+ (inst lda
+ csp-tn
+ (* n-word-bytes (sb-allocated-size 'control-stack))
+ cfp-tn)
(let ((nfp (current-nfp-tn vop)))
(when nfp
- (inst subq nsp-tn (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)
- (move nsp-tn nfp)))
+ (inst subq nsp-tn (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)
+ (move nsp-tn nfp)))
(trace-table-entry trace-table-normal)))
(define-vop (allocate-frame)
(:results (res :scs (any-reg))
- (nfp :scs (any-reg)))
+ (nfp :scs (any-reg)))
(:info callee)
(:generator 2
- (trace-table-entry trace-table-function-prologue)
+ (trace-table-entry trace-table-fun-prologue)
(move csp-tn res)
- (inst lda csp-tn (* word-bytes (sb-allocated-size 'control-stack)) csp-tn)
- (when (ir2-environment-number-stack-p callee)
+ (inst lda
+ csp-tn
+ (* n-word-bytes (sb-allocated-size 'control-stack))
+ csp-tn)
+ (when (ir2-physenv-number-stack-p callee)
(inst subq nsp-tn (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)
+ nsp-tn)
(move nsp-tn nfp))
(trace-table-entry trace-table-normal)))
-;;; Allocate a partial frame for passing stack arguments in a full call. Nargs
-;;; is the number of arguments passed. If no stack arguments are passed, then
-;;; we don't have to do anything.
-;;;
+;;; Allocate a partial frame for passing stack arguments in a full
+;;; call. NARGS is the number of arguments passed. If no stack
+;;; arguments are passed, then we don't have to do anything.
(define-vop (allocate-full-call-frame)
(:info nargs)
(:results (res :scs (any-reg)))
(:generator 2
(when (> nargs register-arg-count)
(move csp-tn res)
- (inst lda csp-tn (* nargs word-bytes) csp-tn))))
-
+ (inst lda csp-tn (* nargs n-word-bytes) csp-tn))))
-\f
-;;; Default-Unknown-Values -- Internal
-;;;
-;;; Emit code needed at the return-point from an unknown-values call for a
-;;; fixed number of values. Values is the head of the TN-Ref list for the
-;;; locations that the values are to be received into. Nvals is the number of
-;;; values that are to be received (should equal the length of Values).
+;;; Emit code needed at the return-point from an unknown-values call
+;;; for a fixed number of values. Values is the head of the TN-REF
+;;; list for the locations that the values are to be received into.
+;;; Nvals is the number of values that are to be received (should
+;;; equal the length of Values).
;;;
-;;; Move-Temp is a Descriptor-Reg TN used as a temporary.
+;;; Move-Temp is a Descriptor-Reg TN used as a temporary.
;;;
-;;; This code exploits the fact that in the unknown-values convention, a
-;;; single value return returns at the return PC + 8, whereas a return of other
-;;; than one value returns directly at the return PC.
+;;; This code exploits the fact that in the unknown-values convention,
+;;; a single value return returns at the return PC + 8, whereas a
+;;; return of other than one value returns directly at the return PC.
;;;
-;;; If 0 or 1 values are expected, then we just emit an instruction to reset
-;;; the SP (which will only be executed when other than 1 value is returned.)
+;;; If 0 or 1 values are expected, then we just emit an instruction to
+;;; reset the SP (which will only be executed when other than 1 value
+;;; is returned.)
;;;
;;; In the general case, we have to do three things:
;;; -- Default unsupplied register values. This need only be done when a
;;;
;;; The general-case code looks like this:
#|
- b regs-defaulted ; Skip if MVs
- nop
+ b regs-defaulted ; Skip if MVs
+ nop
- move a1 null-tn ; Default register values
- ...
- loadi nargs 1 ; Force defaulting of stack values
- move ocfp csp ; Set up args for SP resetting
+ move a1 null-tn ; Default register values
+ ...
+ loadi nargs 1 ; Force defaulting of stack values
+ move ocfp csp ; Set up args for SP resetting
regs-defaulted
- subu temp nargs register-arg-count
+ subu temp nargs register-arg-count
- bltz temp default-value-7 ; jump to default code
+ bltz temp default-value-7 ; jump to default code
addu temp temp -1
- loadw move-temp ocfp-tn 6 ; Move value to correct location.
- store-stack-tn val4-tn move-temp
+ loadw move-temp ocfp-tn 6 ; Move value to correct location.
+ store-stack-tn val4-tn move-temp
- bltz temp default-value-8
+ bltz temp default-value-8
addu temp temp -1
- loadw move-temp ocfp-tn 7
- store-stack-tn val5-tn move-temp
+ loadw move-temp ocfp-tn 7
+ store-stack-tn val5-tn move-temp
- ...
+ ...
defaulting-done
- move sp ocfp ; Reset SP.
+ move sp ocfp ; Reset SP.
<end of code>
<elsewhere>
default-value-7
- store-stack-tn val4-tn null-tn ; Nil out 7'th value. (first on stack)
+ store-stack-tn val4-tn null-tn ; Nil out 7'th value. (first on stack)
default-value-8
- store-stack-tn val5-tn null-tn ; Nil out 8'th value.
+ store-stack-tn val5-tn null-tn ; Nil out 8'th value.
- ...
+ ...
- br defaulting-done
+ br defaulting-done
nop
|#
-;;;
(defun default-unknown-values (vop values nvals move-temp temp lra-label)
(declare (type (or tn-ref null) values)
- (type unsigned-byte nvals) (type tn move-temp temp))
+ (type unsigned-byte nvals) (type tn move-temp temp))
(if (<= nvals 1)
(progn
- ;; Note that this is a single-value return point. This is actually
- ;; the multiple-value entry point for a single desired value, but
- ;; the code location has to be here, or the debugger backtrace
- ;; gets confused.
- (without-scheduling ()
- (note-this-location vop :single-value-return)
- (move ocfp-tn csp-tn)
- (inst nop))
- (when lra-label
- #!-gengc (inst compute-code-from-lra code-tn code-tn lra-label temp)
- #!+gengc (inst compute-code-from-ra code-tn ra-tn lra-label temp)))
+ ;; Note that this is a single-value return point. This is
+ ;; actually the multiple-value entry point for a single
+ ;; desired value, but the code location has to be here, or the
+ ;; debugger backtrace gets confused.
+ (without-scheduling ()
+ (note-this-location vop :single-value-return)
+ (move ocfp-tn csp-tn)
+ (inst nop))
+ (when lra-label
+ (inst compute-code-from-lra code-tn code-tn lra-label temp)))
(let ((regs-defaulted (gen-label))
- (defaulting-done (gen-label))
- (default-stack-vals (gen-label)))
- (without-scheduling ()
- ;; Note that this is an unknown-values return point.
- (note-this-location vop :unknown-return)
- ;; If there are no stack results, clear the stack now.
- (if (> nvals register-arg-count)
- (inst subq nargs-tn (fixnumize register-arg-count) temp)
- (move ocfp-tn csp-tn))
- ;; Branch off to the MV case.
- (inst br zero-tn regs-defaulted))
-
- ;; Do the single value case.
- (do ((i 1 (1+ i))
- (val (tn-ref-across values) (tn-ref-across val)))
- ((= i (min nvals register-arg-count)))
- (move null-tn (tn-ref-tn val)))
- (when (> nvals register-arg-count)
- (move csp-tn ocfp-tn)
- (inst br zero-tn default-stack-vals))
-
- (emit-label regs-defaulted)
-
- (when (> nvals register-arg-count)
- ;; If there are stack results, we have to default them
- ;; and clear the stack.
- (collect ((defaults))
- (do ((i register-arg-count (1+ i))
- (val (do ((i 0 (1+ i))
- (val values (tn-ref-across val)))
- ((= i register-arg-count) val))
- (tn-ref-across val)))
- ((null val))
-
- (let ((default-lab (gen-label))
- (tn (tn-ref-tn val)))
- (defaults (cons default-lab tn))
-
- (inst blt temp default-lab)
- (inst ldl move-temp (* i word-bytes) ocfp-tn)
- (inst subq temp (fixnumize 1) temp)
- (store-stack-tn tn move-temp)))
-
- (emit-label defaulting-done)
- (move ocfp-tn csp-tn)
-
- (let ((defaults (defaults)))
- (assert defaults)
- (assemble (*elsewhere*)
- (emit-label default-stack-vals)
- (do ((remaining defaults (cdr remaining)))
- ((null remaining))
- (let ((def (car remaining)))
- (emit-label (car def))
- (when (null (cdr remaining))
- (inst br zero-tn defaulting-done))
- (store-stack-tn (cdr def) null-tn)))))))
-
- (when lra-label
- #!-gengc (inst compute-code-from-lra code-tn code-tn lra-label temp)
- #!+gengc (inst compute-code-from-ra code-tn ra-tn lra-label temp))))
+ (defaulting-done (gen-label))
+ (default-stack-vals (gen-label)))
+ (without-scheduling ()
+ ;; Note that this is an unknown-values return point.
+ (note-this-location vop :unknown-return)
+ ;; If there are no stack results, clear the stack now.
+ (if (> nvals register-arg-count)
+ (inst subq nargs-tn (fixnumize register-arg-count) temp)
+ (move ocfp-tn csp-tn))
+ ;; Branch off to the MV case.
+ (inst br zero-tn regs-defaulted))
+
+ ;; Do the single value case.
+ (do ((i 1 (1+ i))
+ (val (tn-ref-across values) (tn-ref-across val)))
+ ((= i (min nvals register-arg-count)))
+ (move null-tn (tn-ref-tn val)))
+ (when (> nvals register-arg-count)
+ (move csp-tn ocfp-tn)
+ (inst br zero-tn default-stack-vals))
+
+ (emit-label regs-defaulted)
+
+ (when (> nvals register-arg-count)
+ ;; If there are stack results, we have to default them
+ ;; and clear the stack.
+ (collect ((defaults))
+ (do ((i register-arg-count (1+ i))
+ (val (do ((i 0 (1+ i))
+ (val values (tn-ref-across val)))
+ ((= i register-arg-count) val))
+ (tn-ref-across val)))
+ ((null val))
+
+ (let ((default-lab (gen-label))
+ (tn (tn-ref-tn val)))
+ (defaults (cons default-lab tn))
+
+ (inst ble temp default-lab)
+ (inst ldl move-temp (* i n-word-bytes) ocfp-tn)
+ (inst subq temp (fixnumize 1) temp)
+ (store-stack-tn tn move-temp)))
+
+ (emit-label defaulting-done)
+ (move ocfp-tn csp-tn)
+
+ (let ((defaults (defaults)))
+ (aver defaults)
+ (assemble (*elsewhere*)
+ (emit-label default-stack-vals)
+ (do ((remaining defaults (cdr remaining)))
+ ((null remaining))
+ (let ((def (car remaining)))
+ (emit-label (car def))
+ (store-stack-tn (cdr def) null-tn)))
+ (inst br zero-tn defaulting-done)))))
+
+ (when lra-label
+ (inst compute-code-from-lra code-tn code-tn lra-label temp))))
(values))
-
\f
-;;;; Unknown values receiving:
+;;;; unknown values receiving
-;;; Receive-Unknown-Values -- Internal
-;;;
-;;; Emit code needed at the return point for an unknown-values call for an
-;;; arbitrary number of values.
+;;; Emit code needed at the return point for an unknown-values call
+;;; for an arbitrary number of values.
;;;
-;;; We do the single and non-single cases with no shared code: there doesn't
-;;; seem to be any potential overlap, and receiving a single value is more
-;;; important efficiency-wise.
+;;; We do the single and non-single cases with no shared code: there
+;;; doesn't seem to be any potential overlap, and receiving a single
+;;; value is more important efficiency-wise.
;;;
-;;; When there is a single value, we just push it on the stack, returning
-;;; the old SP and 1.
+;;; When there is a single value, we just push it on the stack,
+;;; returning the old SP and 1.
;;;
-;;; When there is a variable number of values, we move all of the argument
-;;; registers onto the stack, and return Args and Nargs.
-;;;
-;;; Args and Nargs are TNs wired to the named locations. We must
-;;; explicitly allocate these TNs, since their lifetimes overlap with the
-;;; results Start and Count (also, it's nice to be able to target them).
+;;; When there is a variable number of values, we move all of the
+;;; argument registers onto the stack, and return Args and Nargs.
;;;
+;;; Args and Nargs are TNs wired to the named locations. We must
+;;; explicitly allocate these TNs, since their lifetimes overlap with
+;;; the results Start and Count (also, it's nice to be able to target
+;;; them).
(defun receive-unknown-values (args nargs start count lra-label temp)
(declare (type tn args nargs start count temp))
(let ((variable-values (gen-label))
- (done (gen-label)))
+ (done (gen-label)))
(without-scheduling ()
(inst br zero-tn variable-values)
(inst nop))
(when lra-label
- #!-gengc (inst compute-code-from-lra code-tn code-tn lra-label temp)
- #!+gengc (inst compute-code-from-ra code-tn ra-tn lra-label temp))
+ (inst compute-code-from-lra code-tn code-tn lra-label temp))
(inst addq csp-tn 4 csp-tn)
(storew (first *register-arg-tns*) csp-tn -1)
(inst subq csp-tn 4 start)
(inst li (fixnumize 1) count)
-
+
(emit-label done)
-
+
(assemble (*elsewhere*)
(emit-label variable-values)
(when lra-label
- #!-gengc (inst compute-code-from-lra code-tn code-tn lra-label temp)
- #!+gengc (inst compute-code-from-ra code-tn ra-tn lra-label temp))
+ (inst compute-code-from-lra code-tn code-tn lra-label temp))
(do ((arg *register-arg-tns* (rest arg))
- (i 0 (1+ i)))
- ((null arg))
- (storew (first arg) args i))
+ (i 0 (1+ i)))
+ ((null arg))
+ (storew (first arg) args i))
(move args start)
(move nargs count)
(inst br zero-tn done)))
(values))
-
-;;; VOP that can be inherited by unknown values receivers. The main thing this
-;;; handles is allocation of the result temporaries.
-;;;
+;;; a VOP that can be inherited by unknown values receivers. The main
+;;; thing this handles is allocation of the result temporaries.
(define-vop (unknown-values-receiver)
(:results
(start :scs (any-reg))
(count :scs (any-reg)))
(:temporary (:sc descriptor-reg :offset ocfp-offset
- :from :eval :to (:result 0))
- values-start)
+ :from :eval :to (:result 0))
+ values-start)
(:temporary (:sc any-reg :offset nargs-offset
- :from :eval :to (:result 1))
- nvals)
+ :from :eval :to (:result 1))
+ nvals)
(:temporary (:scs (non-descriptor-reg)) temp))
-
+\f
+;;; This hook by the codegen 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:
+;;;; local call with unknown values convention return
;;; Non-TR local call for a fixed number of values passed according to the
;;; unknown values convention.
;;; Values are the return value locations (wired to the standard passing
;;; locations).
;;;
-;;; Save is the save info, which we can ignore since saving has been done.
-;;; Return-PC is the TN that the return PC should be passed in.
-;;; Target is a continuation pointing to the start of the called function.
-;;; Nvals is the number of values received.
-;;;
-;;; Note: we can't use normal load-tn allocation for the fixed args, since all
-;;; registers may be tied up by the more operand. Instead, we use
-;;; MAYBE-LOAD-STACK-TN.
+;;; Save is the save info, which we can ignore since saving has been
+;;; done. Return-PC is the TN that the return PC should be passed in.
+;;; Target is a continuation pointing to the start of the called
+;;; function. Nvals is the number of values received.
;;;
+;;; Note: we can't use normal load-tn allocation for the fixed args,
+;;; since all registers may be tied up by the more operand. Instead,
+;;; we use MAYBE-LOAD-STACK-TN.
(define-vop (call-local)
(:args (fp)
- (nfp)
- (args :more t))
+ (nfp)
+ (args :more t))
(:results (values :more t))
(:save-p t)
(:move-args :local-call)
(:ignore arg-locs args ocfp)
(:generator 5
(let ((label (gen-label))
- (cur-nfp (current-nfp-tn vop)))
+ (cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (store-stack-tn nfp-save cur-nfp))
+ (store-stack-tn nfp-save cur-nfp))
(let ((callee-nfp (callee-nfp-tn callee)))
- (maybe-load-stack-nfp-tn callee-nfp nfp temp))
+ (maybe-load-stack-nfp-tn callee-nfp nfp temp))
(maybe-load-stack-tn cfp-tn fp)
(trace-table-entry trace-table-call-site)
(inst compute-lra-from-code
- (callee-return-pc-tn callee) code-tn label temp)
+ (callee-return-pc-tn callee) code-tn label temp)
(note-this-location vop :call-site)
(inst br zero-tn target)
(trace-table-entry trace-table-normal)
(maybe-load-stack-nfp-tn cur-nfp nfp-save temp))))
-;;; Non-TR local call for a variable number of return values passed according
-;;; to the unknown values convention. The results are the start of the values
-;;; glob and the number of values received.
-;;;
-;;; Note: we can't use normal load-tn allocation for the fixed args, since all
-;;; registers may be tied up by the more operand. Instead, we use
-;;; MAYBE-LOAD-STACK-TN.
+;;; Non-TR local call for a variable number of return values passed
+;;; according to the unknown values convention. The results are the
+;;; start of the values glob and the number of values received.
;;;
+;;; Note: we can't use normal load-tn allocation for the fixed args,
+;;; since all registers may be tied up by the more operand. Instead,
+;;; we use MAYBE-LOAD-STACK-TN.
(define-vop (multiple-call-local unknown-values-receiver)
(:args (fp)
- (nfp)
- (args :more t))
+ (nfp)
+ (args :more t))
(:save-p t)
(:move-args :local-call)
(:info save callee target)
(:temporary (:scs (non-descriptor-reg)) temp)
(:generator 20
(let ((label (gen-label))
- (cur-nfp (current-nfp-tn vop)))
+ (cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (store-stack-tn nfp-save cur-nfp))
+ (store-stack-tn nfp-save cur-nfp))
(let ((callee-nfp (callee-nfp-tn callee)))
- (maybe-load-stack-nfp-tn callee-nfp nfp temp))
+ (maybe-load-stack-nfp-tn callee-nfp nfp temp))
(maybe-load-stack-tn cfp-tn fp)
(trace-table-entry trace-table-call-site)
(inst compute-lra-from-code
- (callee-return-pc-tn callee) code-tn label temp)
+ (callee-return-pc-tn callee) code-tn label temp)
(note-this-location vop :call-site)
(inst bsr zero-tn target)
(trace-table-entry trace-table-normal)
(maybe-load-stack-nfp-tn cur-nfp nfp-save temp))))
\f
-;;;; Local call with known values return:
+;;;; local call with known values return
-;;; Non-TR local call with known return locations. Known-value return works
-;;; just like argument passing in local call.
+;;; Non-TR local call with known return locations. Known-value return
+;;; works just like argument passing in local call.
;;;
;;; Note: we can't use normal load-tn allocation for the fixed args, since all
;;; registers may be tied up by the more operand. Instead, we use
;;; MAYBE-LOAD-STACK-TN.
-;;;
(define-vop (known-call-local)
(:args (fp)
- (nfp)
- (args :more t))
+ (nfp)
+ (args :more t))
(:results (res :more t))
(:move-args :local-call)
(:save-p t)
(:temporary (:sc control-stack :offset nfp-save-offset) nfp-save)
(:temporary (:scs (non-descriptor-reg)) temp)
(:generator 5
- (let (#!-gengc (label (gen-label))
- (cur-nfp (current-nfp-tn vop)))
+ (let ((label (gen-label))
+ (cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (store-stack-tn nfp-save cur-nfp))
+ (store-stack-tn nfp-save cur-nfp))
(let ((callee-nfp (callee-nfp-tn callee)))
- (maybe-load-stack-nfp-tn callee-nfp nfp temp))
+ (maybe-load-stack-nfp-tn callee-nfp nfp temp))
(maybe-load-stack-tn cfp-tn fp)
(trace-table-entry trace-table-call-site)
(inst compute-lra-from-code
- (callee-return-pc-tn callee) code-tn label temp)
+ (callee-return-pc-tn callee) code-tn label temp)
(note-this-location vop :call-site)
(inst bsr zero-tn target)
(trace-table-entry trace-table-normal)
(note-this-location vop :known-return)
(maybe-load-stack-nfp-tn cur-nfp nfp-save temp))))
-;;; Return from known values call. We receive the return locations as
-;;; arguments to terminate their lifetimes in the returning function. We
-;;; restore FP and CSP and jump to the Return-PC.
-;;;
-;;; Note: we can't use normal load-tn allocation for the fixed args, since all
-;;; registers may be tied up by the more operand. Instead, we use
-;;; MAYBE-LOAD-STACK-TN.
+;;; Return from known values call. We receive the return locations as
+;;; arguments to terminate their lifetimes in the returning function.
+;;; We restore FP and CSP and jump to the Return-PC.
;;;
+;;; Note: we can't use normal load-tn allocation for the fixed args,
+;;; since all registers may be tied up by the more operand. Instead,
+;;; we use MAYBE-LOAD-STACK-TN.
(define-vop (known-return)
(:args (ocfp :target ocfp-temp)
- (return-pc :target return-pc-temp)
- (vals :more t))
+ (return-pc :target return-pc-temp)
+ (vals :more t))
(:temporary (:sc any-reg :from (:argument 0)) ocfp-temp)
- (:temporary (:sc #!-gengc descriptor-reg #!+gengc any-reg :from (:argument 1))
- return-pc-temp)
- #!-gengc (:temporary (:scs (interior-reg)) lip)
+ (:temporary (:sc any-reg :from (:argument 1))
+ return-pc-temp)
+ (:temporary (:scs (interior-reg)) lip)
(:move-args :known-return)
(:info val-locs)
(:ignore val-locs vals)
(:vop-var vop)
(:generator 6
- (trace-table-entry trace-table-function-epilogue)
+ (trace-table-entry trace-table-fun-epilogue)
(maybe-load-stack-tn ocfp-temp ocfp)
(maybe-load-stack-tn return-pc-temp return-pc)
(move cfp-tn csp-tn)
(let ((cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)))
- (inst subq return-pc-temp (- other-pointer-type word-bytes) lip)
+ (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)))
+ (inst subq return-pc-temp (- other-pointer-lowtag n-word-bytes) lip)
(move ocfp-temp cfp-tn)
(inst ret zero-tn lip 1)
(trace-table-entry trace-table-normal)))
-
\f
-;;;; Full call:
-;;;
-;;; There is something of a cross-product effect with full calls. Different
-;;; versions are used depending on whether we know the number of arguments or
-;;; the name of the called function, and whether we want fixed values, unknown
-;;; values, or a tail call.
-;;;
-;;; In full call, the arguments are passed creating a partial frame on the
-;;; stack top and storing stack arguments into that frame. On entry to the
-;;; callee, this partial frame is pointed to by FP. If there are no stack
-;;; arguments, we don't bother allocating a partial frame, and instead set FP
-;;; to SP just before the call.
-
-;;; Define-Full-Call -- Internal
-;;;
-;;; This macro helps in the definition of full call VOPs by avoiding code
-;;; replication in defining the cross-product VOPs.
+;;;; full call:
+;;;;
+;;;; There is something of a cross-product effect with full calls.
+;;;; Different versions are used depending on whether we know the
+;;;; number of arguments or the name of the called function, and
+;;;; whether we want fixed values, unknown values, or a tail call.
+;;;;
+;;;; In full call, the arguments are passed creating a partial frame on
+;;;; the stack top and storing stack arguments into that frame. On
+;;;; entry to the callee, this partial frame is pointed to by FP. If
+;;;; there are no stack arguments, we don't bother allocating a partial
+;;;; frame, and instead set FP to SP just before the call.
+
+;;; This macro helps in the definition of full call VOPs by avoiding
+;;; code replication in defining the cross-product VOPs.
;;;
;;; Name is the name of the VOP to define.
-;;;
-;;; Named is true if the first argument is a symbol whose global function
-;;; definition is to be called.
;;;
-;;; Return is either :Fixed, :Unknown or :Tail:
-;;; -- If :Fixed, then the call is for a fixed number of values, returned in
-;;; the standard passing locations (passed as result operands).
-;;; -- If :Unknown, then the result values are pushed on the stack, and the
-;;; result values are specified by the Start and Count as in the
+;;; Named is true if the first argument is a symbol whose global
+;;; function definition is to be called.
+;;;
+;;; Return is either :FIXED, :UNKNOWN or :TAIL:
+;;; -- If :FIXED, then the call is for a fixed number of values, returned
+;;; in the standard passing locations (passed as result operands).
+;;; -- If :UNKNOWN, then the result values are pushed on the stack, and
+;;; the result values are specified by the Start and Count as in the
;;; unknown-values continuation representation.
-;;; -- If :Tail, then do a tail-recursive call. No values are returned.
+;;; -- If :TAIL, then do a tail-recursive call. No values are returned.
;;; The Ocfp and Return-PC are passed as the second and third arguments.
;;;
-;;; In non-tail calls, the pointer to the stack arguments is passed as the last
-;;; fixed argument. If Variable is false, then the passing locations are
-;;; passed as a more arg. Variable is true if there are a variable number of
-;;; arguments passed on the stack. Variable cannot be specified with :Tail
-;;; return. TR variable argument call is implemented separately.
-;;;
-;;; In tail call with fixed arguments, the passing locations are passed as a
-;;; more arg, but there is no new-FP, since the arguments have been set up in
-;;; the current frame.
+;;; In non-tail calls, the pointer to the stack arguments is passed as
+;;; the last fixed argument. If Variable is false, then the passing
+;;; locations are passed as a more arg. Variable is true if there are
+;;; a variable number of arguments passed on the stack. Variable
+;;; cannot be specified with :TAIL return. TR variable argument call
+;;; is implemented separately.
;;;
+;;; In tail call with fixed arguments, the passing locations are
+;;; passed as a more arg, but there is no new-FP, since the arguments
+;;; have been set up in the current frame.
(defmacro define-full-call (name named return variable)
- (assert (not (and variable (eq return :tail))))
+ (aver (not (and variable (eq return :tail))))
`(define-vop (,name
- ,@(when (eq return :unknown)
- '(unknown-values-receiver)))
+ ,@(when (eq return :unknown)
+ '(unknown-values-receiver)))
(:args
,@(unless (eq return :tail)
- '((new-fp :scs (any-reg) :to :eval)))
+ '((new-fp :scs (any-reg) :to :eval)))
,(if named
- '(name :target name-pass)
- '(arg-fun :target lexenv))
-
+ '(name :target name-pass)
+ '(arg-fun :target lexenv))
+
,@(when (eq return :tail)
- '((ocfp :target ocfp-pass)
- (return-pc :target return-pc-pass)))
-
+ '((ocfp :target ocfp-pass)
+ (return-pc :target return-pc-pass)))
+
,@(unless variable '((args :more t :scs (descriptor-reg)))))
,@(when (eq return :fixed)
- '((:results (values :more t))))
-
+ '((:results (values :more t))))
+
(:save-p ,(if (eq return :tail) :compute-only t))
,@(unless (or (eq return :tail) variable)
- '((:move-args :full-call)))
+ '((:move-args :full-call)))
(:vop-var vop)
(:info ,@(unless (or variable (eq return :tail)) '(arg-locs))
- ,@(unless variable '(nargs))
- ,@(when (eq return :fixed) '(nvals)))
+ ,@(unless variable '(nargs))
+ ,@(when (eq return :fixed) '(nvals))
+ step-instrumenting)
(:ignore #!+gengc ,@(unless (eq return :tail) '(return-pc-pass))
- ,@(unless (or variable (eq return :tail)) '(arg-locs))
- ,@(unless variable '(args)))
+ ,@(unless (or variable (eq return :tail)) '(arg-locs))
+ ,@(unless variable '(args))
+ ;; Step instrumentation for full calls not implemented yet.
+ ;; See the PPC backend for an example.
+ step-instrumenting)
(:temporary (:sc descriptor-reg
- :offset ocfp-offset
- :from (:argument 1)
- ,@(unless (eq return :fixed)
- '(:to :eval)))
- ocfp-pass)
+ :offset ocfp-offset
+ :from (:argument 1)
+ ,@(unless (eq return :fixed)
+ '(:to :eval)))
+ ocfp-pass)
(:temporary (:sc descriptor-reg
- :offset #!-gengc lra-offset #!+gengc ra-offset
- :from (:argument ,(if (eq return :tail) 2 1))
- :to :eval)
- return-pc-pass)
+ :offset #!-gengc lra-offset #!+gengc ra-offset
+ :from (:argument ,(if (eq return :tail) 2 1))
+ :to :eval)
+ return-pc-pass)
,@(if named
- `((:temporary (:sc descriptor-reg :offset fdefn-offset
- :from (:argument ,(if (eq return :tail) 0 1))
- :to :eval)
- name-pass))
-
- `((:temporary (:sc descriptor-reg :offset lexenv-offset
- :from (:argument ,(if (eq return :tail) 0 1))
- :to :eval)
- lexenv)
- #!-gengc
- (:temporary (:scs (descriptor-reg) :from (:argument 0) :to :eval)
- function)))
+ `((:temporary (:sc descriptor-reg :offset fdefn-offset
+ :from (:argument ,(if (eq return :tail) 0 1))
+ :to :eval)
+ name-pass))
+
+ `((:temporary (:sc descriptor-reg :offset lexenv-offset
+ :from (:argument ,(if (eq return :tail) 0 1))
+ :to :eval)
+ lexenv)
+ #!-gengc
+ (:temporary (:scs (descriptor-reg) :from (:argument 0) :to :eval)
+ function)))
(:temporary (:sc any-reg :offset nargs-offset :to :eval)
- nargs-pass)
+ nargs-pass)
,@(when variable
- (mapcar #'(lambda (name offset)
- `(:temporary (:sc descriptor-reg
- :offset ,offset
- :to :eval)
- ,name))
- register-arg-names *register-arg-offsets*))
+ (mapcar (lambda (name offset)
+ `(:temporary (:sc descriptor-reg
+ :offset ,offset
+ :to :eval)
+ ,name))
+ register-arg-names *register-arg-offsets*))
,@(when (eq return :fixed)
- '((:temporary (:scs (descriptor-reg) :from :eval) move-temp)))
+ '((:temporary (:scs (descriptor-reg) :from :eval) move-temp)))
,@(unless (eq return :tail)
- '((:temporary (:scs (non-descriptor-reg)) temp)
- (:temporary (:sc control-stack :offset nfp-save-offset) nfp-save)))
+ '((: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)
(:generator ,(+ (if named 5 0)
- (if variable 19 1)
- (if (eq return :tail) 0 10)
- 15
- (if (eq return :unknown) 25 0))
+ (if variable 19 1)
+ (if (eq return :tail) 0 10)
+ 15
+ (if (eq return :unknown) 25 0))
(let* ((cur-nfp (current-nfp-tn vop))
- ,@(unless (eq return :tail)
- '((lra-label (gen-label))))
- (filler
- (remove nil
- (list :load-nargs
- ,@(if (eq return :tail)
- '((unless (location= ocfp ocfp-pass)
- :load-ocfp)
- (unless (location= return-pc
- return-pc-pass)
- :load-return-pc)
- (when cur-nfp
- :frob-nfp))
- '(#!-gengc
- :comp-lra
- (when cur-nfp
- :frob-nfp)
- :save-fp
- :load-fp))))))
- (flet ((do-next-filler ()
- (let* ((next (pop filler))
- (what (if (consp next) (car next) next)))
- (ecase what
- (:load-nargs
- ,@(if variable
- `((inst subq csp-tn new-fp nargs-pass)
- ,@(let ((index -1))
- (mapcar #'(lambda (name)
- `(inst ldl ,name
- ,(ash (incf index)
- word-shift)
- new-fp))
- register-arg-names)))
- '((inst li (fixnumize nargs) nargs-pass))))
- ,@(if (eq return :tail)
- '((:load-ocfp
- (sc-case ocfp
- (any-reg
- (inst move ocfp ocfp-pass))
- (control-stack
- (inst ldl ocfp-pass
- (ash (tn-offset ocfp)
- word-shift)
- cfp-tn))))
- (:load-return-pc
- (sc-case return-pc
- (#!-gengc descriptor-reg #!+gengc any-reg
- (inst move return-pc return-pc-pass))
- (control-stack
- (inst ldl return-pc-pass
- (ash (tn-offset return-pc)
- word-shift)
- cfp-tn))))
- (:frob-nfp
- (inst addq cur-nfp
- (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)))
- `(#!-gengc
- (:comp-lra
- (inst compute-lra-from-code
- return-pc-pass code-tn lra-label temp))
- (:frob-nfp
- (store-stack-tn nfp-save cur-nfp))
- (:save-fp
- (inst move cfp-tn ocfp-pass))
- (:load-fp
- ,(if variable
- '(move new-fp cfp-tn)
- '(if (> nargs register-arg-count)
- (move new-fp cfp-tn)
- (move csp-tn cfp-tn)))
- (trace-table-entry trace-table-call-site))))
- ((nil))))))
-
- ,@(if named
- `((sc-case name
- (descriptor-reg (move name name-pass))
- (control-stack
- (inst ldl name-pass
- (ash (tn-offset name) word-shift) cfp-tn)
- (do-next-filler))
- (constant
- (inst ldl name-pass
- (- (ash (tn-offset name) word-shift)
- other-pointer-type) code-tn)
- (do-next-filler)))
- (inst ldl entry-point
- (- (ash fdefn-raw-addr-slot word-shift)
- other-pointer-type) name-pass)
- (do-next-filler))
- `((sc-case arg-fun
- (descriptor-reg (move arg-fun lexenv))
- (control-stack
- (inst ldl lexenv
- (ash (tn-offset arg-fun) word-shift) cfp-tn)
- (do-next-filler))
- (constant
- (inst ldl lexenv
- (- (ash (tn-offset arg-fun) word-shift)
- other-pointer-type) code-tn)
- (do-next-filler)))
- #!-gengc
- (inst ldl function
- (- (ash closure-function-slot word-shift)
- function-pointer-type) lexenv)
- #!-gengc
- (do-next-filler)
- #!-gengc
- (inst addq function
- (- (ash function-code-offset word-shift)
- function-pointer-type) entry-point)
- #!+gengc
- (inst ldl entry-point
- (- (ash closure-entry-point-slot word-shift)
- function-pointer-type) lexenv)
- #!+gengc
- (do-next-filler)))
- (loop
- (if (cdr filler)
- (do-next-filler)
- (return)))
-
- (note-this-location vop :call-site)
- (do-next-filler)
- (inst jsr zero-tn entry-point))
-
- ,@(ecase return
- (:fixed
- '((trace-table-entry trace-table-normal)
- (emit-return-pc lra-label)
- (default-unknown-values vop values nvals
- move-temp temp lra-label)
- (maybe-load-stack-nfp-tn cur-nfp nfp-save temp)))
- (:unknown
- '((trace-table-entry trace-table-normal)
- (emit-return-pc lra-label)
- (note-this-location vop :unknown-return)
- (receive-unknown-values values-start nvals start count
- lra-label temp)
- (maybe-load-stack-nfp-tn cur-nfp nfp-save temp)))
- (:tail))))))
-
+ ,@(unless (eq return :tail)
+ '((lra-label (gen-label))))
+ (filler
+ (remove nil
+ (list :load-nargs
+ ,@(if (eq return :tail)
+ '((unless (location= ocfp ocfp-pass)
+ :load-ocfp)
+ (unless (location= return-pc
+ return-pc-pass)
+ :load-return-pc)
+ (when cur-nfp
+ :frob-nfp))
+ '(#!-gengc
+ :comp-lra
+ (when cur-nfp
+ :frob-nfp)
+ :save-fp
+ :load-fp))))))
+ (flet ((do-next-filler ()
+ (let* ((next (pop filler))
+ (what (if (consp next) (car next) next)))
+ (ecase what
+ (:load-nargs
+ ,@(if variable
+ `((inst subq csp-tn new-fp nargs-pass)
+ ,@(let ((index -1))
+ (mapcar (lambda (name)
+ `(inst ldl ,name
+ ,(ash (incf index)
+ word-shift)
+ new-fp))
+ register-arg-names)))
+ '((inst li (fixnumize nargs) nargs-pass))))
+ ,@(if (eq return :tail)
+ '((:load-ocfp
+ (sc-case ocfp
+ (any-reg
+ (inst move ocfp ocfp-pass))
+ (control-stack
+ (inst ldl ocfp-pass
+ (ash (tn-offset ocfp)
+ word-shift)
+ cfp-tn))))
+ (:load-return-pc
+ (sc-case return-pc
+ (#!-gengc descriptor-reg #!+gengc any-reg
+ (inst move return-pc return-pc-pass))
+ (control-stack
+ (inst ldl return-pc-pass
+ (ash (tn-offset return-pc)
+ word-shift)
+ cfp-tn))))
+ (:frob-nfp
+ (inst addq cur-nfp
+ (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)))
+ `(#!-gengc
+ (:comp-lra
+ (inst compute-lra-from-code
+ return-pc-pass code-tn lra-label temp))
+ (:frob-nfp
+ (store-stack-tn nfp-save cur-nfp))
+ (:save-fp
+ (inst move cfp-tn ocfp-pass))
+ (:load-fp
+ ,(if variable
+ '(move new-fp cfp-tn)
+ '(if (> nargs register-arg-count)
+ (move new-fp cfp-tn)
+ (move csp-tn cfp-tn)))
+ (trace-table-entry trace-table-call-site))))
+ ((nil))))))
+
+ ,@(if named
+ `((sc-case name
+ (descriptor-reg (move name name-pass))
+ (control-stack
+ (inst ldl name-pass
+ (ash (tn-offset name) word-shift) cfp-tn)
+ (do-next-filler))
+ (constant
+ (inst ldl name-pass
+ (- (ash (tn-offset name) word-shift)
+ other-pointer-lowtag) code-tn)
+ (do-next-filler)))
+ (inst ldl entry-point
+ (- (ash fdefn-raw-addr-slot word-shift)
+ other-pointer-lowtag) name-pass)
+ (do-next-filler))
+ `((sc-case arg-fun
+ (descriptor-reg (move arg-fun lexenv))
+ (control-stack
+ (inst ldl lexenv
+ (ash (tn-offset arg-fun) word-shift) cfp-tn)
+ (do-next-filler))
+ (constant
+ (inst ldl lexenv
+ (- (ash (tn-offset arg-fun) word-shift)
+ other-pointer-lowtag) code-tn)
+ (do-next-filler)))
+ #!-gengc
+ (inst ldl function
+ (- (ash closure-fun-slot word-shift)
+ fun-pointer-lowtag) lexenv)
+ #!-gengc
+ (do-next-filler)
+ #!-gengc
+ (inst addq function
+ (- (ash simple-fun-code-offset word-shift)
+ fun-pointer-lowtag) entry-point)
+ #!+gengc
+ (inst ldl entry-point
+ (- (ash closure-entry-point-slot word-shift)
+ fun-pointer-lowtag) lexenv)
+ #!+gengc
+ (do-next-filler)))
+ (loop
+ (if (cdr filler)
+ (do-next-filler)
+ (return)))
+
+ (note-this-location vop :call-site)
+ (do-next-filler)
+ (inst jsr zero-tn entry-point))
+
+ ,@(ecase return
+ (:fixed
+ '((trace-table-entry trace-table-normal)
+ (emit-return-pc lra-label)
+ (default-unknown-values vop values nvals
+ move-temp temp lra-label)
+ (maybe-load-stack-nfp-tn cur-nfp nfp-save temp)))
+ (:unknown
+ '((trace-table-entry trace-table-normal)
+ (emit-return-pc lra-label)
+ (note-this-location vop :unknown-return)
+ (receive-unknown-values values-start nvals start count
+ lra-label temp)
+ (maybe-load-stack-nfp-tn cur-nfp nfp-save temp)))
+ (:tail))))))
(define-full-call call nil :fixed nil)
(define-full-call call-named t :fixed nil)
(define-full-call call-variable nil :fixed t)
(define-full-call multiple-call-variable nil :unknown t)
-
-;;; Defined separately, since needs special code that BLT's the arguments
-;;; down.
-;;;
+;;; This is defined separately, since it needs special code that blits
+;;; the arguments down.
(define-vop (tail-call-variable)
(:args
(args-arg :scs (any-reg) :target args)
(:temporary (:sc any-reg :offset lexenv-offset :from (:argument 1)) lexenv)
(:temporary (:sc any-reg :offset ocfp-offset :from (:argument 2)) ocfp)
(:temporary (:sc any-reg :offset #!-gengc lra-offset #!+gengc ra-offset
- :from (:argument 3)) lra)
+ :from (:argument 3)) lra)
(:temporary (:scs (non-descriptor-reg)) temp)
(:vop-var vop)
;; Clear the number stack if anything is there.
(let ((cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)))
+ (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)))
;; And jump to the assembly-routine that does the bliting.
(inst li (make-fixup 'tail-call-variable :assembly-routine) temp)
(inst jmp zero-tn temp)))
-
\f
-;;;; Unknown values return:
+;;;; unknown values return
;;; Return a single value using the unknown-values convention.
-;;;
(define-vop (return-single)
(:args (ocfp :scs (any-reg))
- #!-gengc (return-pc :scs (descriptor-reg))
- #!+gengc (return-pc :scs (any-reg) :target ra)
- (value))
+ #!-gengc (return-pc :scs (descriptor-reg))
+ #!+gengc (return-pc :scs (any-reg) :target ra)
+ (value))
(:ignore value)
#!-gengc (:temporary (:scs (interior-reg)) lip)
#!+gengc (:temporary (:sc any-reg :offset ra-offset :from (:argument 1)) ra)
(:vop-var vop)
(:generator 6
;; Clear the number stack.
- (trace-table-entry trace-table-function-epilogue)
+ (trace-table-entry trace-table-fun-epilogue)
(let ((cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)))
+ (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)))
;; Clear the control stack, and restore the frame pointer.
(move cfp-tn csp-tn)
(move ocfp cfp-tn)
#!-gengc (lisp-return return-pc lip :offset 2)
#!+gengc
(progn
- (inst addq return-pc (* 2 word-bytes) temp)
+ (inst addq return-pc (* 2 n-word-bytes) temp)
(unless (location= ra return-pc)
- (inst move ra return-pc))
+ (inst move ra return-pc))
(inst ret zero-tn temp 1))
(trace-table-entry trace-table-normal)))
-
-;;; Do unknown-values return of a fixed number of values. The Values are
-;;; required to be set up in the standard passing locations. Nvals is the
-;;; number of values returned.
-;;;
-;;; If returning a single value, then deallocate the current frame, restore
-;;; FP and jump to the single-value entry at Return-PC + 8.
+;;; Do unknown-values return of a fixed number of values. The Values
+;;; are required to be set up in the standard passing locations. Nvals
+;;; is the number of values returned.
;;;
-;;; If returning other than one value, then load the number of values returned,
-;;; NIL out unsupplied values registers, restore FP and return at Return-PC.
-;;; When there are stack values, we must initialize the argument pointer to
-;;; point to the beginning of the values block (which is the beginning of the
-;;; current frame.)
+;;; If returning a single value, then deallocate the current frame,
+;;; restore FP and jump to the single-value entry at Return-PC + 8.
;;;
+;;; If returning other than one value, then load the number of values
+;;; returned, NIL out unsupplied values registers, restore FP and
+;;; return at Return-PC. When there are stack values, we must
+;;; initialize the argument pointer to point to the beginning of the
+;;; values block (which is the beginning of the current frame.)
(define-vop (return)
(:args (ocfp :scs (any-reg))
- (return-pc :scs (#!-gengc descriptor-reg #!+gengc any-reg) :to (:eval 1)
- #!+gengc :target #!+gengc ra)
- (values :more t))
+ (return-pc :scs (#!-gengc descriptor-reg #!+gengc any-reg)
+ :to (:eval 1)
+ #!+gengc :target #!+gengc ra)
+ (values :more t))
(:ignore values)
(:info nvals)
(:temporary (:sc descriptor-reg :offset a0-offset :from (:eval 0)) a0)
(:vop-var vop)
(:generator 6
;; Clear the number stack.
- (trace-table-entry trace-table-function-epilogue)
+ (trace-table-entry trace-table-fun-epilogue)
(let ((cur-nfp (current-nfp-tn vop)))
(when cur-nfp
- (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)))
+ (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)))
;; Establish the values pointer and values count.
(move cfp-tn val-ptr)
(inst li (fixnumize nvals) nargs)
;; restore the frame pointer and clear as much of the control
;; stack as possible.
(move ocfp cfp-tn)
- (inst addq val-ptr (* nvals word-bytes) csp-tn)
+ ;; ADDQ only accepts immediates of type (UNSIGNED-BYTE 8). Here,
+ ;; instead of adding (* NVALS N-WORD-BYTES), we use NARGS that
+ ;; we've carefully set up, but protect ourselves by averring that
+ ;; FIXNUMIZEation and multiplication by N-WORD-BYTES is the same.
+ (aver (= (* nvals n-word-bytes) (fixnumize nvals)))
+ (inst addq val-ptr nargs csp-tn)
;; pre-default any argument register that need it.
(when (< nvals register-arg-count)
(dolist (reg (subseq (list a0 a1 a2 a3 a4 a5) nvals))
- (move null-tn reg)))
+ (move null-tn reg)))
;; And away we go.
(lisp-return return-pc lip)
(trace-table-entry trace-table-normal)))
-;;; Do unknown-values return of an arbitrary number of values (passed on the
-;;; stack.) We check for the common case of a single return value, and do that
-;;; inline using the normal single value return convention. Otherwise, we
-;;; branch off to code that calls an assembly-routine.
-;;;
+;;; Do unknown-values return of an arbitrary number of values (passed
+;;; on the stack.) We check for the common case of a single return
+;;; value, and do that inline using the normal single value return
+;;; convention. Otherwise, we branch off to code that calls an
+;;; assembly-routine.
(define-vop (return-multiple)
(:args (ocfp-arg :scs (any-reg) :target ocfp)
- #!-gengc (lra-arg :scs (descriptor-reg) :target lra)
- #!+gengc (return-pc :scs (any-reg) :target ra)
- (vals-arg :scs (any-reg) :target vals)
- (nvals-arg :scs (any-reg) :target nvals))
+ #!-gengc (lra-arg :scs (descriptor-reg) :target lra)
+ #!+gengc (return-pc :scs (any-reg) :target ra)
+ (vals-arg :scs (any-reg) :target vals)
+ (nvals-arg :scs (any-reg) :target nvals))
(:temporary (:sc any-reg :offset nl1-offset :from (:argument 0)) ocfp)
#!-gengc
(:vop-var vop)
(:generator 13
- (trace-table-entry trace-table-function-epilogue)
+ (trace-table-entry trace-table-fun-epilogue)
(let ((not-single (gen-label)))
;; Clear the number stack.
(let ((cur-nfp (current-nfp-tn vop)))
- (when cur-nfp
- (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
- nsp-tn)))
+ (when cur-nfp
+ (inst addq cur-nfp (bytes-needed-for-non-descriptor-stack-frame)
+ nsp-tn)))
;; Check for the single case.
(inst li (fixnumize 1) a0)
(move cfp-tn csp-tn)
(move ocfp-arg cfp-tn)
(lisp-return lra-arg lip :offset 2)
-
+
;; Nope, not the single case.
(emit-label not-single)
(move ocfp-arg ocfp)
(inst li (make-fixup 'return-multiple :assembly-routine) temp)
(inst jmp zero-tn temp))
(trace-table-entry trace-table-normal)))
-
-
\f
-;;;; XEP hackery:
-
+;;;; XEP hackery
;;; We don't need to do anything special for regular functions.
-;;;
(define-vop (setup-environment)
(:info label)
(:ignore label)
))
;;; Get the lexical environment from its passing location.
-;;;
(define-vop (setup-closure-environment)
(:temporary (:sc descriptor-reg :offset lexenv-offset :target closure
- :to (:result 0))
- lexenv)
+ :to (:result 0))
+ lexenv)
(:results (closure :scs (descriptor-reg)))
(:info label)
(:ignore label)
;; Get result.
(move lexenv closure)))
-;;; Copy a more arg from the argument area to the end of the current frame.
-;;; Fixed is the number of non-more arguments.
-;;;
+;;; Copy a &MORE arg from the argument area to the end of the current
+;;; frame. FIXED is the number of non-&MORE arguments.
(define-vop (copy-more-arg)
(:temporary (:sc any-reg :offset nl0-offset) result)
(:temporary (:sc any-reg :offset nl1-offset) count)
(:info fixed)
(:generator 20
(let ((loop (gen-label))
- (do-regs (gen-label))
- (done (gen-label)))
+ (do-regs (gen-label))
+ (done (gen-label)))
(when (< fixed register-arg-count)
- ;; Save a pointer to the results so we can fill in register args.
- ;; We don't need this if there are more fixed args than reg args.
- (move csp-tn result))
+ ;; Save a pointer to the results so we can fill in register
+ ;; args. We don't need this if there are more fixed args than
+ ;; reg args.
+ (move csp-tn result))
;; Allocate the space on the stack.
(cond ((zerop fixed)
- (inst addq csp-tn nargs-tn csp-tn)
- (inst beq nargs-tn done))
- (t
- (inst subq nargs-tn (fixnumize fixed) count)
- (inst ble count done)
- (inst addq csp-tn count csp-tn)))
+ (inst addq csp-tn nargs-tn csp-tn)
+ (inst beq nargs-tn done))
+ (t
+ (inst subq nargs-tn (fixnumize fixed) count)
+ (inst ble count done)
+ (inst addq csp-tn count csp-tn)))
(when (< fixed register-arg-count)
- ;; We must stop when we run out of stack args, not when we run out of
- ;; more args.
- (inst subq nargs-tn (fixnumize register-arg-count) count))
+ ;; We must stop when we run out of stack args, not when we run
+ ;; out of &MORE args.
+ (inst subq nargs-tn (fixnumize register-arg-count) count))
;; Initialize dst to be end of stack.
(move csp-tn dst)
;; Everything of interest in registers.
(inst ble count do-regs)
- ;; Initialize src to be end of args.
+ ;; Initialize SRC to be end of args.
(inst addq cfp-tn nargs-tn src)
(emit-label loop)
;; *--dst = *--src, --count
- (inst subq src word-bytes src)
+ (inst subq src n-word-bytes src)
(inst subq count (fixnumize 1) count)
(loadw temp src)
- (inst subq dst word-bytes dst)
+ (inst subq dst n-word-bytes dst)
(storew temp dst)
(inst bgt count loop)
(emit-label do-regs)
(when (< fixed register-arg-count)
- ;; Now we have to deposit any more args that showed up in registers.
- ;; We know there is at least one more arg, otherwise we would have
- ;; branched to done up at the top.
- (inst subq nargs-tn (fixnumize (1+ fixed)) count)
- (do ((i fixed (1+ i)))
- ((>= i register-arg-count))
- ;; Store it relative to the pointer saved at the start.
- (storew (nth i *register-arg-tns*) result (- i fixed))
- ;; Is this the last one?
- (inst beq count done)
- ;; Decrement count.
- (inst subq count (fixnumize 1) count)))
+ ;; Now we have to deposit any more args that showed up in
+ ;; registers. We know there is at least one &MORE arg,
+ ;; otherwise we would have branched to DONE up at the top.
+ (inst subq nargs-tn (fixnumize (1+ fixed)) count)
+ (do ((i fixed (1+ i)))
+ ((>= i register-arg-count))
+ ;; Store it relative to the pointer saved at the start.
+ (storew (nth i *register-arg-tns*) result (- i fixed))
+ ;; Is this the last one?
+ (inst beq count done)
+ ;; Decrement count.
+ (inst subq count (fixnumize 1) count)))
(emit-label done))))
-
-;;; More args are stored consequtively on the stack, starting immediately at
-;;; the context pointer. The context pointer is not typed, so the lowtag is 0.
-;;;
+;;; &MORE args are stored consecutively on the stack, starting
+;;; immediately at the context pointer. The context pointer is not
+;;; typed, so the lowtag is 0.
(define-full-reffer more-arg * 0 0 (descriptor-reg any-reg) * %more-arg)
-
-;;; Turn more arg (context, count) into a list.
-;;;
+;;; Turn &MORE arg (context, count) into a list.
(define-vop (listify-rest-args)
(:args (context-arg :target context :scs (descriptor-reg))
- (count-arg :target count :scs (any-reg)))
+ (count-arg :target count :scs (any-reg)))
(:arg-types * tagged-num)
(:temporary (:scs (any-reg) :from (:argument 0)) context)
(:temporary (:scs (any-reg) :from (:argument 1)) count)
(:results (result :scs (descriptor-reg)))
(:translate %listify-rest-args)
(:policy :safe)
+ (:node-var node)
(:generator 20
- (let ((enter (gen-label))
- (loop (gen-label))
- (done (gen-label)))
+ (let* ((enter (gen-label))
+ (loop (gen-label))
+ (done (gen-label))
+ (dx-p (node-stack-allocate-p node))
+ (alloc-area-tn (if dx-p csp-tn alloc-tn)))
(move context-arg context)
(move count-arg count)
;; Check to see if there are any arguments.
;; We need to do this atomically.
(pseudo-atomic ()
- ;; Allocate a cons (2 words) for each item.
- (inst bis alloc-tn list-pointer-type result)
- (move result dst)
- (inst sll count 1 temp)
- (inst addq alloc-tn temp alloc-tn)
- (inst br zero-tn enter)
-
- ;; Store the current cons in the cdr of the previous cons.
- (emit-label loop)
- (inst addq dst (* 2 word-bytes) dst)
- (storew dst dst -1 list-pointer-type)
-
- (emit-label enter)
- ;; Grab one value.
- (loadw temp context)
- (inst addq context word-bytes context)
-
- ;; Store the value in the car (in delay slot)
- (storew temp dst 0 list-pointer-type)
-
- ;; Dec count, and if != zero, go back for more.
- (inst subq count (fixnumize 1) count)
- (inst bne count loop)
-
- ;; NIL out the last cons.
- (storew null-tn dst 1 list-pointer-type))
+ ;; align CSP
+ (when dx-p (align-csp temp))
+ ;; Allocate a cons (2 words) for each item.
+ (inst bis alloc-area-tn list-pointer-lowtag result)
+ (move result dst)
+ (inst sll count 1 temp)
+ (inst addq alloc-area-tn temp alloc-area-tn)
+ (inst br zero-tn enter)
+
+ ;; Store the current cons in the cdr of the previous cons.
+ (emit-label loop)
+ (inst addq dst (* 2 n-word-bytes) dst)
+ (storew dst dst -1 list-pointer-lowtag)
+
+ (emit-label enter)
+ ;; Grab one value.
+ (loadw temp context)
+ (inst addq context n-word-bytes context)
+
+ ;; Store the value in the car (in delay slot)
+ (storew temp dst 0 list-pointer-lowtag)
+
+ ;; Decrement count, and if != zero, go back for more.
+ (inst subq count (fixnumize 1) count)
+ (inst bne count loop)
+
+ ;; NIL out the last cons.
+ (storew null-tn dst 1 list-pointer-lowtag))
(emit-label done))))
-;;; Return the location and size of the more arg glob created by Copy-More-Arg.
-;;; Supplied is the total number of arguments supplied (originally passed in
-;;; NARGS.) Fixed is the number of non-rest arguments.
-;;;
-;;; We must duplicate some of the work done by Copy-More-Arg, since at that
-;;; time the environment is in a pretty brain-damaged state, preventing this
-;;; info from being returned as values. What we do is compute
-;;; supplied - fixed, and return a pointer that many words below the current
-;;; stack top.
+;;; Return the location and size of the &MORE arg glob created by
+;;; COPY-MORE-ARG. Supplied is the total number of arguments supplied
+;;; (originally passed in NARGS.) Fixed is the number of non-&rest
+;;; arguments.
;;;
+;;; We must duplicate some of the work done by COPY-MORE-ARG, since at
+;;; that time the environment is in a pretty brain-damaged state,
+;;; preventing this info from being returned as values. What we do is
+;;; compute supplied - fixed, and return a pointer that many words
+;;; below the current stack top.
(define-vop (more-arg-context)
(:policy :fast-safe)
(:translate sb!c::%more-arg-context)
(:arg-types tagged-num (:constant fixnum))
(:info fixed)
(:results (context :scs (descriptor-reg))
- (count :scs (any-reg)))
+ (count :scs (any-reg)))
(:result-types t tagged-num)
(:note "more-arg-context")
(:generator 5
(inst subq supplied (fixnumize fixed) count)
(inst subq csp-tn count context)))
-
-;;; Signal wrong argument count error if Nargs isn't = to Count.
-;;;
-(define-vop (verify-argument-count)
+;;; Signal wrong argument count error if NARGS isn't equal to COUNT.
+(define-vop (verify-arg-count)
(:policy :fast-safe)
- (:translate sb!c::%verify-argument-count)
+ (:translate sb!c::%verify-arg-count)
(:args (nargs :scs (any-reg)))
(:arg-types positive-fixnum (:constant t))
(:temporary (:scs (any-reg) :type fixnum) temp)
(:save-p :compute-only)
(:generator 3
(let ((err-lab
- (generate-error-code vop invalid-argument-count-error nargs)))
+ (generate-error-code vop invalid-arg-count-error nargs)))
(cond ((zerop count)
- (inst bne nargs err-lab))
- (t
- (inst subq nargs (fixnumize count) temp)
- (inst bne temp err-lab))))))
+ (inst bne nargs err-lab))
+ (t
+ (inst subq nargs (fixnumize count) temp)
+ (inst bne temp err-lab))))))
-;;; Various other error signalers.
-;;;
+;;; various other error signalers
(macrolet ((frob (name error translate &rest args)
- `(define-vop (,name)
- ,@(when translate
- `((:policy :fast-safe)
- (:translate ,translate)))
- (:args ,@(mapcar #'(lambda (arg)
- `(,arg :scs (any-reg descriptor-reg)))
- args))
- (:vop-var vop)
- (:save-p :compute-only)
- (:generator 1000
- (error-call vop ,error ,@args)))))
- (frob argument-count-error invalid-argument-count-error
- sb!c::%argument-count-error nargs)
+ `(define-vop (,name)
+ ,@(when translate
+ `((:policy :fast-safe)
+ (:translate ,translate)))
+ (:args ,@(mapcar (lambda (arg)
+ `(,arg :scs (any-reg descriptor-reg)))
+ args))
+ (:vop-var vop)
+ (:save-p :compute-only)
+ (:generator 1000
+ (error-call vop ,error ,@args)))))
+ (frob arg-count-error invalid-arg-count-error
+ sb!c::%arg-count-error nargs)
(frob type-check-error object-not-type-error sb!c::%type-check-error
object type)
(frob layout-invalid-error layout-invalid-error sb!c::%layout-invalid-error
object layout)
- (frob odd-key-arguments-error odd-key-arguments-error
- sb!c::%odd-key-arguments-error)
- (frob unknown-key-argument-error unknown-key-argument-error
- sb!c::%unknown-key-argument-error key)
- (frob nil-function-returned-error nil-function-returned-error nil fun))
+ (frob odd-key-args-error odd-key-args-error
+ sb!c::%odd-key-args-error)
+ (frob unknown-key-arg-error unknown-key-arg-error
+ sb!c::%unknown-key-arg-error key)
+ (frob nil-fun-returned-error nil-fun-returned-error nil fun))
+
+;;; Single-stepping
+
+(define-vop (step-instrument-before-vop)
+ (:policy :fast-safe)
+ (:vop-var vop)
+ (:generator 3
+ ;; Stub! See the PPC backend for an example.
+ (note-this-location vop :step-before-vop)))
projects / sbcl.git / blobdiff