-;;; -*- Package: ALPHA; Log: C.Log -*-
-;;;
-;;; **********************************************************************
-;;; 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 various useful macros for generating Alpha code.
-;;;
-;;; Written by William Lott and Christopher Hoover.
-;;; Alpha conversion by Sean Hallgren.
-;;;
-
-(in-package "SB!VM")
+;;;; various useful macros for generating Alpha code
+;;;; 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.
-;;; Handy macro for defining top-level forms that depend on the compile
-;;; environment.
+(in-package "SB!VM")
+;;; a handy macro for defining top level forms that depend on the
+;;; compile environment
(defmacro expand (expr)
(let ((gensym (gensym)))
`(macrolet
((,gensym ()
,expr))
(,gensym))))
-
\f
-;;; Instruction-like macros.
+;;; instruction-like macros
;;; c.f. x86 backend:
;;(defmacro move (dst src)
;; `(unless (location= ,n-dst ,n-src)
;; (inst mov ,n-dst ,n-src))))
-
(defmacro move (src dst)
"Move SRC into DST unless they are location=."
(once-only ((n-src src) (n-dst dst))
`(inst ldl ,reg
(+ (static-symbol-offset ',symbol)
(ash symbol-value-slot word-shift)
- (- other-pointer-type))
+ (- other-pointer-lowtag))
null-tn))
(defmacro store-symbol-value (reg symbol)
`(inst stl ,reg
(+ (static-symbol-offset ',symbol)
(ash symbol-value-slot word-shift)
- (- other-pointer-type))
+ (- other-pointer-lowtag))
null-tn))
(defmacro load-type (target source &optional (offset 0))
(inst ldl ,n-target ,n-offset ,n-source)
(inst and ,n-target #xff ,n-target))))
-;;; Macros to handle the fact that we cannot use the machine native call and
-;;; return instructions.
+;;; macros to handle the fact that we cannot use the machine native
+;;; call and return instructions
(defmacro lisp-jump (function lip)
"Jump to the lisp function FUNCTION. LIP is an interior-reg temporary."
`(progn
- (inst lda ,lip (- (ash sb!vm:function-code-offset sb!vm:word-shift)
- sb!vm:function-pointer-type)
+ (inst lda ,lip (- (ash sb!vm:simple-fun-code-offset sb!vm:word-shift)
+ sb!vm:fun-pointer-lowtag)
,function)
(move ,function code-tn)
(inst jsr zero-tn ,lip 1)))
"Return to RETURN-PC. LIP is an interior-reg temporary."
`(progn
(inst lda ,lip
- (- (* (1+ ,offset) word-bytes) other-pointer-type)
+ (- (* (1+ ,offset) n-word-bytes) other-pointer-lowtag)
,return-pc)
,@(when frob-code
`((move ,return-pc code-tn)))
"Emit a return-pc header word. LABEL is the label to use for this
return-pc."
`(progn
- (align lowtag-bits)
+ (align n-lowtag-bits)
(emit-label ,label)
(inst lra-header-word)))
\f
-;;;; Stack TN's
+;;;; stack TN's
-;;; Load-Stack-TN, Store-Stack-TN -- Interface
-;;;
;;; Move a stack TN to a register and vice-versa.
-;;;
(defmacro load-stack-tn (reg stack)
`(let ((reg ,reg)
(stack ,stack))
(sc-case stack
((control-stack)
(loadw reg cfp-tn offset))))))
-
(defmacro store-stack-tn (stack reg)
`(let ((stack ,stack)
(reg ,reg))
((control-stack)
(storew reg cfp-tn offset))))))
-
-;;; MAYBE-LOAD-STACK-TN -- Interface
-;;;
+;;; Move the TN Reg-Or-Stack into Reg if it isn't already there.
(defmacro maybe-load-stack-tn (reg reg-or-stack)
- "Move the TN Reg-Or-Stack into Reg if it isn't already there."
(once-only ((n-reg reg)
(n-stack reg-or-stack))
`(sc-case ,n-reg
((control-stack)
(loadw ,n-reg cfp-tn (tn-offset ,n-stack))))))))
-;;; MAYBE-LOAD-STACK-NFP-TN -- Interface
-;;;
+;;; Move the TN Reg-Or-Stack into Reg if it isn't already there.
(defmacro maybe-load-stack-nfp-tn (reg reg-or-stack temp)
- "Move the TN Reg-Or-Stack into Reg if it isn't already there."
(once-only ((n-reg reg)
(n-stack reg-or-stack))
`(when ,reg
(loadw ,n-reg cfp-tn (tn-offset ,n-stack))
(inst mskll nsp-tn 0 ,temp)
(inst bis ,temp ,n-reg ,n-reg))))))))
-
-
\f
-;;;; Storage allocation:
-
-(defmacro with-fixed-allocation ((result-tn temp-tn type-code size)
+;;;; storage allocation
+
+;;; Do stuff to allocate an other-pointer object of fixed SIZE with a
+;;; single word header having the specified WIDETAG value. The result is
+;;; placed in RESULT-TN, Flag-Tn must be wired to NL3-OFFSET, 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.
+(defmacro with-fixed-allocation ((result-tn temp-tn widetag size)
&body body)
- "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, Flag-Tn must be wired to NL3-OFFSET, 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."
`(pseudo-atomic (:extra (pad-data-block ,size))
- (inst bis alloc-tn other-pointer-type ,result-tn)
- (inst li (logior (ash (1- ,size) type-bits) ,type-code) ,temp-tn)
- (storew ,temp-tn ,result-tn 0 other-pointer-type)
+ (inst bis alloc-tn other-pointer-lowtag ,result-tn)
+ (inst li (logior (ash (1- ,size) n-widetag-bits) ,widetag) ,temp-tn)
+ (storew ,temp-tn ,result-tn 0 other-pointer-lowtag)
,@body))
-
-
\f
-;;;; Error Code
-
-
-(defvar *adjustable-vectors* nil)
-
-(defmacro with-adjustable-vector ((var) &rest body)
- `(let ((,var (or (pop *adjustable-vectors*)
- (make-array 16
- :element-type '(unsigned-byte 8)
- :fill-pointer 0
- :adjustable t))))
- (setf (fill-pointer ,var) 0)
- (unwind-protect
- (progn
- ,@body)
- (push ,var *adjustable-vectors*))))
-
+;;;; error code
(eval-when (:compile-toplevel :load-toplevel :execute)
(defun emit-error-break (vop kind code values)
(let ((vector (gensym)))
(inst gentrap ,kind)
(with-adjustable-vector (,vector)
(write-var-integer (error-number-or-lose ',code) ,vector)
- ,@(mapcar #'(lambda (tn)
- `(let ((tn ,tn))
- (write-var-integer (make-sc-offset (sc-number
- (tn-sc tn))
- (tn-offset tn))
- ,vector)))
+ ,@(mapcar (lambda (tn)
+ `(let ((tn ,tn))
+ (write-var-integer (make-sc-offset (sc-number
+ (tn-sc tn))
+ (tn-offset tn))
+ ,vector)))
values)
(inst byte (length ,vector))
(dotimes (i (length ,vector))
Emit code for a continuable error with the specified Error-Code and
context Values. If the error is continued, execution resumes after
the GENERATE-CERROR-CODE form."
- (let ((continue (gensym "CONTINUE-LABEL-"))
- (error (gensym "ERROR-LABEL-")))
+ (with-unique-names (continue error)
`(let ((,continue (gen-label)))
(emit-label ,continue)
(assemble (*elsewhere*)
,error)))))
\f
-;;; PSEUDO-ATOMIC -- Handy macro for making sequences look atomic.
-;;;
+;;; a handy macro for making sequences look atomic
(defmacro pseudo-atomic ((&key (extra 0)) &rest forms)
`(progn
(inst addq alloc-tn 1 alloc-tn)
,@forms
(inst lda alloc-tn (1- ,extra) alloc-tn)
(inst stl zero-tn 0 alloc-tn)))
-
-
\f
-;;;; Memory accessor vop generators
-
-(deftype load/store-index (scale lowtag min-offset
- &optional (max-offset min-offset))
- `(integer ,(- (truncate (+ (ash 1 16)
- (* min-offset word-bytes)
- (- lowtag))
- scale))
- ,(truncate (- (+ (1- (ash 1 16)) lowtag)
- (* max-offset word-bytes))
- scale)))
+;;;; memory accessor vop generators
(defmacro define-full-reffer (name type offset lowtag scs el-type
&optional translate)
(:result-types ,el-type)
(:generator 5
(inst addq object index lip)
- (inst ldl value (- (* ,offset word-bytes) ,lowtag) lip)
+ (inst ldl value (- (* ,offset n-word-bytes) ,lowtag) lip)
,@(when (equal scs '(unsigned-reg))
'((inst mskll value 4 value)))))
(define-vop (,(symbolicate name "-C"))
(:args (object :scs (descriptor-reg)))
(:info index)
(:arg-types ,type
- (:constant (load/store-index ,word-bytes ,(eval lowtag)
+ (:constant (load/store-index ,n-word-bytes ,(eval lowtag)
,(eval offset))))
(:results (value :scs ,scs))
(:result-types ,el-type)
(:generator 4
- (inst ldl value (- (* (+ ,offset index) word-bytes) ,lowtag)
+ (inst ldl value (- (* (+ ,offset index) n-word-bytes) ,lowtag)
object)
,@(when (equal scs '(unsigned-reg))
'((inst mskll value 4 value)))))))
(defmacro define-full-setter (name type offset lowtag scs el-type
- &optional translate #+gengc (remember t))
+ &optional translate #!+gengc (remember t))
`(progn
(define-vop (,name)
,@(when translate
(:result-types ,el-type)
(:generator 2
(inst addq index object lip)
- (inst stl value (- (* ,offset word-bytes) ,lowtag) lip)
+ (inst stl value (- (* ,offset n-word-bytes) ,lowtag) lip)
(move value result)))
(define-vop (,(symbolicate name "-C"))
,@(when translate
(value :scs ,scs))
(:info index)
(:arg-types ,type
- (:constant (load/store-index ,word-bytes ,(eval lowtag)
+ (:constant (load/store-index ,n-word-bytes ,(eval lowtag)
,(eval offset)))
,el-type)
(:results (result :scs ,scs))
(:result-types ,el-type)
(:generator 1
- (inst stl value (- (* (+ ,offset index) word-bytes) ,lowtag)
+ (inst stl value (- (* (+ ,offset index) n-word-bytes) ,lowtag)
object)
(move value result)))))
,@(ecase size
(:byte
(if signed
- `((inst ldq_u temp (- (* ,offset word-bytes) ,lowtag)
+ `((inst ldq_u temp (- (* ,offset n-word-bytes) ,lowtag)
lip)
- (inst lda temp1 (1+ (- (* ,offset word-bytes) ,lowtag))
+ (inst lda temp1 (1+ (- (* ,offset n-word-bytes) ,lowtag))
lip)
(inst extqh temp temp1 temp)
(inst sra temp 56 value))
- `((inst ldq_u temp (- (* ,offset word-bytes) ,lowtag) lip)
- (inst lda temp1 (- (* ,offset word-bytes) ,lowtag)
+ `((inst ldq_u
+ temp
+ (- (* ,offset n-word-bytes) ,lowtag)
+ lip)
+ (inst lda temp1 (- (* ,offset n-word-bytes) ,lowtag)
lip)
(inst extbl temp temp1 value))))
(:short
(if signed
- `((inst ldq_u temp (- (* ,offset word-bytes) ,lowtag)
+ `((inst ldq_u temp (- (* ,offset n-word-bytes) ,lowtag)
lip)
- (inst lda temp1 (- (* ,offset word-bytes) ,lowtag)
+ (inst lda temp1 (- (* ,offset n-word-bytes) ,lowtag)
lip)
(inst extwl temp temp1 temp)
(inst sll temp 48 temp)
(inst sra temp 48 value))
- `((inst ldq_u temp (- (* ,offset word-bytes) ,lowtag)
+ `((inst ldq_u temp (- (* ,offset n-word-bytes) ,lowtag)
lip)
- (inst lda temp1 (- (* ,offset word-bytes) ,lowtag) lip)
+ (inst lda temp1 (- (* ,offset n-word-bytes) ,lowtag) lip)
(inst extwl temp temp1 value)))))))
(define-vop (,(symbolicate name "-C"))
,@(when translate
,@(ecase size
(:byte
(if signed
- `((inst ldq_u temp (- (+ (* ,offset word-bytes)
+ `((inst ldq_u temp (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
- (inst lda temp1 (1+ (- (+ (* ,offset word-bytes)
+ (inst lda temp1 (1+ (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag))
object)
(inst extqh temp temp1 temp)
(inst sra temp 56 value))
- `((inst ldq_u temp (- (+ (* ,offset word-bytes)
+ `((inst ldq_u temp (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
- (inst lda temp1 (- (+ (* ,offset word-bytes)
+ (inst lda temp1 (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
(inst extbl temp temp1 value))))
(:short
(if signed
- `((inst ldq_u temp (- (+ (* ,offset word-bytes)
+ `((inst ldq_u temp (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
- (inst lda temp1 (- (+ (* ,offset word-bytes)
+ (inst lda temp1 (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
(inst extwl temp temp1 temp)
(inst sll temp 48 temp)
(inst sra temp 48 value))
- `((inst ldq_u temp (- (+ (* ,offset word-bytes)
+ `((inst ldq_u temp (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
- (inst lda temp1 (- (+ (* ,offset word-bytes)
+ (inst lda temp1 (- (+ (* ,offset n-word-bytes)
(* index ,scale)) ,lowtag)
object)
(inst extwl temp temp1 value))))))))))
'((inst addq lip index lip)))
,@(ecase size
(:byte
- `((inst lda temp (- (* ,offset word-bytes) ,lowtag) lip)
- (inst ldq_u temp1 (- (* ,offset word-bytes) ,lowtag) lip)
+ `((inst lda temp (- (* ,offset n-word-bytes) ,lowtag) lip)
+ (inst ldq_u temp1 (- (* ,offset n-word-bytes) ,lowtag) lip)
(inst insbl value temp temp2)
(inst mskbl temp1 temp temp1)
(inst bis temp1 temp2 temp1)
- (inst stq_u temp1 (- (* ,offset word-bytes) ,lowtag) lip)))
+ (inst stq_u temp1 (- (* ,offset n-word-bytes) ,lowtag) lip)))
(:short
- `((inst lda temp (- (* ,offset word-bytes) ,lowtag) lip)
- (inst ldq_u temp1 (- (* ,offset word-bytes) ,lowtag) lip)
+ `((inst lda temp (- (* ,offset n-word-bytes) ,lowtag) lip)
+ (inst ldq_u temp1 (- (* ,offset n-word-bytes) ,lowtag) lip)
(inst mskwl temp1 temp temp1)
(inst inswl value temp temp2)
(inst bis temp1 temp2 temp)
- (inst stq_u temp (- (* ,offset word-bytes) ,lowtag) lip))))
+ (inst stq_u temp (- (* ,offset n-word-bytes) ,lowtag) lip))))
(move value result)))
(define-vop (,(symbolicate name "-C"))
,@(when translate
(:generator 5
,@(ecase size
(:byte
- `((inst lda temp (- (* ,offset word-bytes)
+ `((inst lda temp (- (* ,offset n-word-bytes)
(* index ,scale) ,lowtag)
object)
- (inst ldq_u temp1 (- (* ,offset word-bytes)
+ (inst ldq_u temp1 (- (* ,offset n-word-bytes)
(* index ,scale) ,lowtag)
object)
(inst insbl value temp temp2)
(inst mskbl temp1 temp temp1)
(inst bis temp1 temp2 temp1)
- (inst stq_u temp1 (- (* ,offset word-bytes)
+ (inst stq_u temp1 (- (* ,offset n-word-bytes)
(* index ,scale) ,lowtag) object)))
(:short
- `((inst lda temp (- (* ,offset word-bytes)
+ `((inst lda temp (- (* ,offset n-word-bytes)
(* index ,scale) ,lowtag)
object)
- (inst ldq_u temp1 (- (* ,offset word-bytes)
+ (inst ldq_u temp1 (- (* ,offset n-word-bytes)
(* index ,scale) ,lowtag)
object)
(inst mskwl temp1 temp temp1)
(inst inswl value temp temp2)
(inst bis temp1 temp2 temp)
- (inst stq_u temp (- (* ,offset word-bytes)
+ (inst stq_u temp (- (* ,offset n-word-bytes)
(* index ,scale) ,lowtag) object))))
(move value result))))))
+
+(defmacro sb!sys::with-pinned-objects ((&rest objects) &body body)
+ "Arrange with the garbage collector that the pages occupied by
+OBJECTS will not be moved in memory for the duration of BODY.
+Useful for e.g. foreign calls where another thread may trigger
+garbage collection. This is currently implemented by disabling GC"
+ (declare (ignore objects)) ;should we eval these for side-effect?
+ `(without-gcing
+ ,@body))
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