(in-package "SB!VM")
\f
-;;; Instruction-like macros.
-(defmacro move (src dst)
- "Move SRC into DST unless they are location=."
- (once-only ((src src) (dst dst))
- `(unless (location= ,src ,dst)
- (inst move ,src ,dst))))
+(defmacro expand (expr)
+ (let ((gensym (gensym)))
+ `(macrolet
+ ((,gensym ()
+ ,expr))
+ (,gensym))))
+
+;;; Instruction-like macros.
+;;; FIXME-lav: add if always-emit-code-p is :e= then error if location=
+(defmacro move (src dst &optional always-emit-code-p)
+ #!+sb-doc
+ "Move SRC into DST (unless they are location= and ALWAYS-EMIT-CODE-P is nil)."
+ (once-only ((n-src src)
+ (n-dst dst))
+ `(if (location= ,n-dst ,n-src)
+ (when ,always-emit-code-p
+ (inst nop))
+ (inst move ,n-src ,n-dst))))
(defmacro loadw (result base &optional (offset 0) (lowtag 0))
(once-only ((result result) (base base))
(defmacro load-symbol (reg symbol)
(once-only ((reg reg) (symbol symbol))
- `(inst addi (static-symbol-offset ,symbol) null-tn ,reg)))
+ `(let ((offset (static-symbol-offset ,symbol)))
+ (cond
+ ((typep offset '(signed-byte 11))
+ (inst addi offset null-tn ,reg))
+ (t
+ (inst ldil offset ,reg)
+ (inst ldo offset null-tn ,reg :unsigned t))))))
(defmacro load-symbol-value (reg symbol)
`(inst ldw
(+ (static-symbol-offset ',symbol)
(ash symbol-value-slot word-shift)
(- other-pointer-lowtag))
- null-tn
- ,reg))
+ null-tn ,reg))
(defmacro store-symbol-value (reg symbol)
`(inst stw ,reg (+ (static-symbol-offset ',symbol)
null-tn))
(defmacro load-type (target source &optional (offset 0))
+ #!+sb-doc
"Loads the type bits of a pointer into target independent of
- byte-ordering issues."
- (ecase *backend-byte-order*
- (:little-endian
- `(inst ldb ,offset ,source ,target))
- (:big-endian
- `(inst ldb (+ ,offset (1- n-word-bytes)) ,source ,target))))
+byte-ordering issues."
+ (once-only ((n-target target)
+ (n-source source)
+ (n-offset offset))
+ (ecase *backend-byte-order*
+ (:little-endian
+ `(inst ldb ,n-offset ,n-source ,n-target))
+ (:big-endian
+ `(inst ldb (+ ,n-offset (1- n-word-bytes)) ,n-source ,n-target)))))
+
+(defmacro set-lowtag (tag src dst)
+ `(progn
+ (inst move ,src ,dst)
+ (inst dep ,tag 31 n-lowtag-bits ,dst)))
;;; Macros to handle the fact that we cannot use the machine native call and
;;; return instructions.
(defmacro lisp-jump (function)
- "Jump to the lisp function FUNCTION. LIP is an interior-reg temporary."
+ #!+sb-doc
+ "Jump to the lisp function FUNCTION."
`(progn
- (inst addi
- (- (ash simple-fun-code-offset word-shift) fun-pointer-lowtag)
- ,function
- lip-tn)
+ (inst addi (- (ash simple-fun-code-offset word-shift)
+ fun-pointer-lowtag) ,function lip-tn)
(inst bv lip-tn)
- (move ,function code-tn)))
+ (move ,function code-tn t)))
(defmacro lisp-return (return-pc &key (offset 0) (frob-code t))
+ #!+sb-doc
"Return to RETURN-PC."
`(progn
(inst addi (- (* (1+ ,offset) n-word-bytes) other-pointer-lowtag)
,return-pc lip-tn)
(inst bv lip-tn ,@(unless frob-code '(:nullify t)))
- ,@(when frob-code
- `((move ,return-pc code-tn)))))
+ ,@(if frob-code
+ `((move ,return-pc code-tn t)))))
(defmacro emit-return-pc (label)
+ #!+sb-doc
"Emit a return-pc header word. LABEL is the label to use for this
return-pc."
`(progn
- (align n-lowtag-bits)
+ ;; alignment causes the return point to land on two address,
+ ;; where the first must be nop pad.
+ (emit-alignment n-lowtag-bits)
(emit-label ,label)
(inst lra-header-word)))
(sc-case stack
((control-stack)
(loadw reg cfp-tn offset))))))
+
(defmacro store-stack-tn (stack reg)
`(let ((stack ,stack)
(reg ,reg))
(storew reg cfp-tn offset))))))
(defmacro maybe-load-stack-tn (reg reg-or-stack)
+ #!+sb-doc
"Move the TN Reg-Or-Stack into Reg if it isn't already there."
(once-only ((n-reg reg)
(n-stack reg-or-stack))
\f
;;;; Storage allocation:
-(defmacro with-fixed-allocation ((result-tn temp-tn type-code size)
+(defmacro with-fixed-allocation ((result-tn flag-tn temp-tn type-code
+ size dynamic-extent-p
+ &key (lowtag other-pointer-lowtag)
+ maybe-write)
&body body)
+ #!+sb-doc
"Do stuff to allocate an other-pointer object of fixed Size with a single
- word header having the specified Type-Code. The result is placed in
- Result-TN, and Temp-TN is a non-descriptor temp (which may be randomly used
- by the body.) The body is placed inside the PSEUDO-ATOMIC, and presumably
- initializes the object."
- (unless body
- (bug "empty &body in WITH-FIXED-ALLOCATION"))
+word header having the specified Type-Code. The result is placed in
+Result-TN, and Temp-TN is a non-descriptor temp (which may be randomly used
+by the body.) The body is placed inside the PSEUDO-ATOMIC, and presumably
+initializes the object."
+ (declare (ignore flag-tn))
(once-only ((result-tn result-tn) (temp-tn temp-tn)
- (type-code type-code) (size size))
- `(pseudo-atomic (:extra (pad-data-block ,size))
- (inst move alloc-tn ,result-tn)
- (inst dep other-pointer-lowtag 31 3 ,result-tn)
- (inst li (logior (ash (1- ,size) n-widetag-bits) ,type-code) ,temp-tn)
- (storew ,temp-tn ,result-tn 0 other-pointer-lowtag)
- ,@body)))
+ (type-code type-code) (size size)
+ (lowtag lowtag))
+ (let ((write-body `((inst li (logior (ash (1- ,size) n-widetag-bits) ,type-code) ,temp-tn)
+ (storew ,temp-tn ,result-tn 0 ,lowtag))))
+ `(if ,dynamic-extent-p
+ (pseudo-atomic ()
+ (align-csp ,temp-tn)
+ (set-lowtag ,lowtag csp-tn ,result-tn)
+ (inst addi (pad-data-block ,size) csp-tn csp-tn)
+ ,@(if maybe-write
+ `((when ,type-code ,@write-body))
+ write-body)
+ ,@body)
+ (pseudo-atomic (:extra (pad-data-block ,size))
+ (set-lowtag ,lowtag alloc-tn ,result-tn)
+ ,@(if maybe-write
+ `((when ,type-code ,@write-body))
+ write-body)
+ ,@body)))))
+
+;;; is used for stack allocation of dynamic-extent objects
+;;; FIXME-lav, if using defun, atleast surround in assembly-form ? macro better ?
+(defun align-csp (temp)
+ (declare (ignore temp))
+ (let ((aligned (gen-label)))
+ (inst extru csp-tn 31 n-lowtag-bits zero-tn :<>)
+ (inst b aligned :nullify t)
+ (inst addi n-word-bytes csp-tn csp-tn)
+ (storew zero-tn csp-tn -1)
+ (emit-label aligned)))
\f
;;;; Error Code
-(eval-when (compile load eval)
+(eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
(defun emit-error-break (vop kind code values)
(let ((vector (gensym)))
`((let ((vop ,vop))
(inst byte (length ,vector))
(dotimes (i (length ,vector))
(inst byte (aref ,vector i))))
- (align word-shift)))))
+ (emit-alignment word-shift)))))
(defmacro error-call (vop error-code &rest values)
+ #!+sb-doc
"Cause an error. ERROR-CODE is the error to cause."
(cons 'progn
(emit-error-break vop error-trap error-code values)))
(defmacro cerror-call (vop label error-code &rest values)
+ #!+sb-doc
"Cause a continuable error. If the error is continued, execution resumes at
LABEL."
`(progn
- (inst b ,label)
- ,@(emit-error-break vop cerror-trap error-code values)))
+ (without-scheduling ()
+ (inst b ,label)
+ ,@(emit-error-break vop cerror-trap error-code values))))
(defmacro generate-error-code (vop error-code &rest values)
+ #!+sb-doc
"Generate-Error-Code Error-code Value*
Emit code for an error with the specified Error-Code and context Values."
`(assemble (*elsewhere*)
start-lab)))
(defmacro generate-cerror-code (vop error-code &rest values)
+ #!+sb-doc
"Generate-CError-Code Error-code Value*
Emit code for a continuable error with the specified Error-Code and
context Values. If the error is continued, execution resumes after
,@(when translate
`((:translate ,translate)))
(:policy :fast-safe)
- (:args (object :scs (descriptor-reg) :to (:eval 0))
- (index :scs (any-reg) :target temp))
+ (:args (object :scs (descriptor-reg))
+ (index :scs (any-reg)))
(:arg-types ,type tagged-num)
- (:temporary (:scs (non-descriptor-reg) :from (:argument 1)) temp)
+ (:temporary (:scs (interior-reg)) lip)
(:results (value :scs ,scs))
(:result-types ,el-type)
(:generator 5
- (inst addi (- (* ,offset n-word-bytes) ,lowtag) index temp)
- (inst ldwx temp object value)))
+ (inst add object index lip)
+ (loadw value lip ,offset ,lowtag)))
(define-vop (,(symbolicate name "-C"))
,@(when translate
`((:translate ,translate)))
(:results (value :scs ,scs))
(:result-types ,el-type)
(:generator 4
- (inst ldw (- (* (+ ,offset index) n-word-bytes) ,lowtag)
- object value)))))
+ (loadw value object (+ ,offset index) ,lowtag)))))
(defmacro define-full-setter (name type offset lowtag scs el-type
&optional translate)
(:result-types ,el-type)
(:generator 2
(inst add object index lip)
- (inst stw value (- (* ,offset n-word-bytes) ,lowtag) lip)
+ (storew value lip ,offset ,lowtag)
(move value result)))
(define-vop (,(symbolicate name "-C"))
,@(when translate
(:results (result :scs ,scs))
(:result-types ,el-type)
(:generator 1
- (inst stw value (- (* (+ ,offset index) n-word-bytes) ,lowtag) object)
+ (storew value object (+ ,offset index) ,lowtag)
(move value result)))))
(declare (ignore objects)) ;should we eval these for side-effect?
`(without-gcing
,@body))
+
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