(once-only ((n-dst dst)
(n-src src))
`(unless (location= ,n-dst ,n-src)
- (inst mov ,n-dst ,n-src))))
+ (sc-case ,n-dst
+ ((single-reg complex-single-reg)
+ (aver (xmm-register-p ,n-src))
+ (inst movaps ,n-dst ,n-src))
+ ((double-reg complex-double-reg)
+ (aver (xmm-register-p ,n-src))
+ (inst movapd ,n-dst ,n-src))
+ (t
+ (inst mov ,n-dst ,n-src))))))
(defmacro make-ea-for-object-slot (ptr slot lowtag)
`(make-ea :qword :base ,ptr :disp (- (* ,slot n-word-bytes) ,lowtag)))
(make-ea :byte :base ,n-source :disp ,n-offset)))
(:big-endian
`(inst mov ,n-target
- (make-ea :byte :base ,n-source :disp (+ ,n-offset 4)))))))
+ (make-ea :byte :base ,n-source
+ :disp (+ ,n-offset (1- n-word-bytes))))))))
\f
;;;; allocation helpers
;;; node-var then it is used to make an appropriate speed vs size
;;; decision.
-(defun allocation-dynamic-extent (alloc-tn size)
+(defun allocation-dynamic-extent (alloc-tn size lowtag)
(inst sub rsp-tn size)
;; see comment in x86/macros.lisp implementation of this
(inst and rsp-tn #.(lognot lowtag-mask))
(aver (not (location= alloc-tn rsp-tn)))
- (inst mov alloc-tn rsp-tn)
+ (inst lea alloc-tn (make-ea :byte :base rsp-tn :disp lowtag))
(values))
;;; This macro should only be used inside a pseudo-atomic section,
;;; which should also cover subsequent initialization of the
;;; object.
-(defun allocation-tramp (alloc-tn size &optional ignored)
- (declare (ignore ignored))
+(defun allocation-tramp (alloc-tn size lowtag)
(inst push size)
(inst lea temp-reg-tn (make-ea :qword
:disp (make-fixup "alloc_tramp" :foreign)))
(inst call temp-reg-tn)
(inst pop alloc-tn)
+ (when lowtag
+ (inst lea alloc-tn (make-ea :byte :base alloc-tn :disp lowtag)))
(values))
-(defun allocation (alloc-tn size &optional ignored dynamic-extent)
+(defun allocation (alloc-tn size &optional ignored dynamic-extent lowtag)
(declare (ignore ignored))
(when dynamic-extent
- (allocation-dynamic-extent alloc-tn size)
+ (allocation-dynamic-extent alloc-tn size lowtag)
(return-from allocation (values)))
(let ((NOT-INLINE (gen-label))
(DONE (gen-label))
#!-sb-thread
(make-ea :qword
:scale 1 :disp
- (make-fixup (extern-alien-name "boxed_region") :foreign)))
+ (make-fixup "boxed_region" :foreign)))
;; thread->alloc_region.end_addr
(end-addr
#!+sb-thread
#!-sb-thread
(make-ea :qword
:scale 1 :disp
- (make-fixup (extern-alien-name "boxed_region") :foreign 8))))
+ (make-fixup "boxed_region" :foreign 8))))
(cond (in-elsewhere
- (allocation-tramp alloc-tn size))
+ (allocation-tramp alloc-tn size lowtag))
(t
(inst mov temp-reg-tn free-pointer)
(if (tn-p size)
(inst cmp end-addr alloc-tn)
(inst jmp :be NOT-INLINE)
(inst mov free-pointer alloc-tn)
- (inst mov alloc-tn temp-reg-tn)
+ (if lowtag
+ (inst lea alloc-tn (make-ea :byte :base temp-reg-tn :disp lowtag))
+ (inst mov alloc-tn temp-reg-tn))
(emit-label DONE)
(assemble (*elsewhere*)
(emit-label NOT-INLINE)
(cond ((numberp size)
- (allocation-tramp alloc-tn size))
+ (allocation-tramp alloc-tn size lowtag))
(t
(inst sub alloc-tn free-pointer)
- (allocation-tramp alloc-tn alloc-tn)))
- (inst jmp DONE))
- (values)))))
-
-#+nil
-(defun allocation (alloc-tn size &optional ignored)
- (declare (ignore ignored))
- (inst push size)
- (inst lea temp-reg-tn (make-ea :qword
- :disp (make-fixup "alloc_tramp" :foreign)))
- (inst call temp-reg-tn)
- (inst pop alloc-tn)
- (values))
+ (allocation-tramp alloc-tn alloc-tn lowtag)))
+ (inst jmp DONE))))
+ (values)))
;;; 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.
-(defmacro with-fixed-allocation ((result-tn widetag size &optional inline)
+(defmacro with-fixed-allocation ((result-tn widetag size &optional inline stack-allocate-p)
&body forms)
(unless forms
(bug "empty &body in WITH-FIXED-ALLOCATION"))
- (once-only ((result-tn result-tn) (size size))
- `(pseudo-atomic
- (allocation ,result-tn (pad-data-block ,size) ,inline)
+ (once-only ((result-tn result-tn) (size size) (stack-allocate-p stack-allocate-p))
+ `(maybe-pseudo-atomic ,stack-allocate-p
+ (allocation ,result-tn (pad-data-block ,size) ,inline ,stack-allocate-p
+ other-pointer-lowtag)
(storew (logior (ash (1- ,size) n-widetag-bits) ,widetag)
- ,result-tn)
- (inst lea ,result-tn
- (make-ea :qword :base ,result-tn :disp other-pointer-lowtag))
+ ,result-tn 0 other-pointer-lowtag)
,@forms)))
\f
;;;; error code
-(eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
- (defun emit-error-break (vop kind code values)
- (let ((vector (gensym)))
- `((inst int 3) ; i386 breakpoint instruction
- ;; The return PC points here; note the location for the debugger.
- (let ((vop ,vop))
- (when vop
- (note-this-location vop :internal-error)))
- (inst byte ,kind) ; eg trap_Xyyy
- (with-adjustable-vector (,vector) ; interr arguments
- (write-var-integer (error-number-or-lose ',code) ,vector)
- ,@(mapcar (lambda (tn)
- `(let ((tn ,tn))
- ;; classic CMU CL comment:
- ;; zzzzz jrd here. tn-offset is zero for constant
- ;; tns.
- (write-var-integer (make-sc-offset (sc-number
- (tn-sc tn))
- (or (tn-offset tn)
- 0))
- ,vector)))
- values)
- (inst byte (length ,vector))
- (dotimes (i (length ,vector))
- (inst byte (aref ,vector i))))))))
-
-(defmacro error-call (vop error-code &rest values)
+(defun emit-error-break (vop kind code values)
+ (assemble ()
+ #!-ud2-breakpoints
+ (inst int 3) ; i386 breakpoint instruction
+ ;; On Darwin, we need to use #x0b0f instead of int3 in order
+ ;; to generate a SIGILL instead of a SIGTRAP as darwin/x86
+ ;; doesn't seem to be reliably firing SIGTRAP
+ ;; handlers. Hopefully this will be fixed by Apple at a
+ ;; later date. Do the same on x86-64 as we do on x86 until this gets
+ ;; sorted out.
+ #!+ud2-breakpoints
+ (inst word #x0b0f)
+ ;; The return PC points here; note the location for the debugger.
+ (when vop
+ (note-this-location vop :internal-error))
+ (inst byte kind) ; eg trap_Xyyy
+ (with-adjustable-vector (vector) ; interr arguments
+ (write-var-integer code vector)
+ (dolist (tn values)
+ ;; classic CMU CL comment:
+ ;; zzzzz jrd here. tn-offset is zero for constant
+ ;; tns.
+ (write-var-integer (make-sc-offset (sc-number (tn-sc tn))
+ (or (tn-offset tn) 0))
+ vector))
+ (inst byte (length vector))
+ (dotimes (i (length vector))
+ (inst byte (aref vector i))))))
+
+(defun 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)))
+ (emit-error-break vop error-trap (error-number-or-lose error-code) values))
-(defmacro generate-error-code (vop error-code &rest values)
+(defun 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*)
- (let ((start-lab (gen-label)))
- (emit-label start-lab)
- (error-call ,vop ,error-code ,@values)
+ (assemble (*elsewhere*)
+ (let ((start-lab (gen-label)))
+ (emit-label start-lab)
+ (emit-error-break vop error-trap (error-number-or-lose error-code) values)
start-lab)))
\f
;;; place and there's no logical single place to attach documentation.
;;; grep (mostly in src/runtime) is your friend
-;;; FIXME: *PSEUDO-ATOMIC-FOO* could be made into *PSEUDO-ATOMIC-BITS*,
-;;; set with a single operation and cleared with SHR *PSEUDO-ATOMIC-BITS*,-2;
-;;; the ATOMIC bit is bit 0, the INTERRUPTED bit is bit 1, and you check
-;;; the C flag after the shift to see whether you were interrupted.
-
-;;; FIXME: THIS NAME IS BACKWARDS!
-(defmacro maybe-pseudo-atomic (really-p &body body)
- `(if ,really-p
+(defmacro maybe-pseudo-atomic (not-really-p &body body)
+ `(if ,not-really-p
(progn ,@body)
(pseudo-atomic ,@body)))
+;;; Unsafely clear pa flags so that the image can properly lose in a
+;;; pa section.
+#!+sb-thread
+(defmacro %clear-pseudo-atomic ()
+ '(inst mov (make-ea :qword :base thread-base-tn
+ :disp (* 8 thread-pseudo-atomic-bits-slot))
+ 0))
+
#!+sb-thread
(defmacro pseudo-atomic (&rest forms)
(with-unique-names (label)
`(let ((,label (gen-label)))
- (inst mov (make-ea :byte
- :base thread-base-tn
- :disp (* 8 thread-pseudo-atomic-atomic-slot))
- (fixnumize 1))
- ,@forms
- (inst mov (make-ea :byte
- :base thread-base-tn
- :disp (* 8 thread-pseudo-atomic-atomic-slot)) 0)
- (inst cmp (make-ea :byte
- :base thread-base-tn
- :disp (* 8 thread-pseudo-atomic-interrupted-slot)) 0)
- (inst jmp :eq ,label)
- ;; if PAI was set, interrupts were disabled at the same
- ;; time using the process signal mask.
- (inst break pending-interrupt-trap)
- (emit-label ,label))))
+ (inst mov (make-ea :qword
+ :base thread-base-tn
+ :disp (* 8 thread-pseudo-atomic-bits-slot))
+ rbp-tn)
+ ,@forms
+ (inst xor (make-ea :qword
+ :base thread-base-tn
+ :disp (* 8 thread-pseudo-atomic-bits-slot))
+ rbp-tn)
+ (inst jmp :z ,label)
+ ;; if PAI was set, interrupts were disabled at the same time
+ ;; using the process signal mask.
+ (inst break pending-interrupt-trap)
+ (emit-label ,label))))
#!-sb-thread
(defmacro pseudo-atomic (&rest forms)
(with-unique-names (label)
`(let ((,label (gen-label)))
- ;; FIXME: The MAKE-EA noise should become a MACROLET macro or
- ;; something. (perhaps SVLB, for static variable low byte)
- (inst mov (make-ea :byte :disp (+ nil-value
- (static-symbol-offset
- '*pseudo-atomic-atomic*)
- (ash symbol-value-slot word-shift)
- (- other-pointer-lowtag)))
- (fixnumize 1))
- ,@forms
- (inst mov (make-ea :byte :disp (+ nil-value
- (static-symbol-offset
- '*pseudo-atomic-atomic*)
- (ash symbol-value-slot word-shift)
- (- other-pointer-lowtag)))
- 0)
- (inst cmp (make-ea :byte
- :disp (+ nil-value
- (static-symbol-offset
- '*pseudo-atomic-interrupted*)
- (ash symbol-value-slot word-shift)
- (- other-pointer-lowtag)))
- 0)
- (inst jmp :eq ,label)
- ;; if PAI was set, interrupts were disabled at the same time
- ;; using the process signal mask.
- (inst break pending-interrupt-trap)
- (emit-label ,label))))
-
-
+ ;; FIXME: The MAKE-EA noise should become a MACROLET macro or
+ ;; something. (perhaps SVLB, for static variable low byte)
+ (inst mov (make-ea :qword :disp (+ nil-value
+ (static-symbol-offset
+ '*pseudo-atomic-bits*)
+ (ash symbol-value-slot word-shift)
+ (- other-pointer-lowtag)))
+ rbp-tn)
+ ,@forms
+ (inst xor (make-ea :qword :disp (+ nil-value
+ (static-symbol-offset
+ '*pseudo-atomic-bits*)
+ (ash symbol-value-slot word-shift)
+ (- other-pointer-lowtag)))
+ rbp-tn)
+ (inst jmp :z ,label)
+ ;; if PAI was set, interrupts were disabled at the same time
+ ;; using the process signal mask.
+ (inst break pending-interrupt-trap)
+ (emit-label ,label))))
\f
;;;; indexed references
+(defmacro define-full-compare-and-swap
+ (name type offset lowtag scs el-type &optional translate)
+ `(progn
+ (define-vop (,name)
+ ,@(when translate `((:translate ,translate)))
+ (:policy :fast-safe)
+ (:args (object :scs (descriptor-reg) :to :eval)
+ (index :scs (any-reg) :to :result)
+ (old-value :scs ,scs :target rax)
+ (new-value :scs ,scs))
+ (:arg-types ,type tagged-num ,el-type ,el-type)
+ (:temporary (:sc descriptor-reg :offset rax-offset
+ :from (:argument 2) :to :result :target value) rax)
+ (:results (value :scs ,scs))
+ (:result-types ,el-type)
+ (:generator 5
+ (move rax old-value)
+ (inst cmpxchg (make-ea :qword :base object :index index
+ :disp (- (* ,offset n-word-bytes) ,lowtag))
+ new-value :lock)
+ (move value rax)))))
+
(defmacro define-full-reffer (name type offset lowtag scs el-type &optional translate)
`(progn
(define-vop (,name)
:disp (- (* (+ ,offset index) n-word-bytes)
,lowtag)))))))
+(defmacro define-full-reffer+offset (name type offset lowtag scs el-type &optional translate)
+ `(progn
+ (define-vop (,name)
+ ,@(when translate
+ `((:translate ,translate)))
+ (:policy :fast-safe)
+ (:args (object :scs (descriptor-reg))
+ (index :scs (any-reg)))
+ (:info offset)
+ (:arg-types ,type tagged-num
+ (:constant (constant-displacement other-pointer-lowtag
+ n-word-bytes vector-data-offset)))
+ (:results (value :scs ,scs))
+ (:result-types ,el-type)
+ (:generator 3 ; pw was 5
+ (inst mov value (make-ea :qword :base object :index index
+ :disp (- (* (+ ,offset offset) n-word-bytes)
+ ,lowtag)))))
+ (define-vop (,(symbolicate name "-C"))
+ ,@(when translate
+ `((:translate ,translate)))
+ (:policy :fast-safe)
+ (:args (object :scs (descriptor-reg)))
+ (:info index offset)
+ (:arg-types ,type
+ (:constant (load/store-index ,n-word-bytes ,(eval lowtag)
+ ,(eval offset)))
+ (:constant (constant-displacement other-pointer-lowtag
+ n-word-bytes vector-data-offset)))
+ (:results (value :scs ,scs))
+ (:result-types ,el-type)
+ (:generator 2 ; pw was 5
+ (inst mov value (make-ea :qword :base object
+ :disp (- (* (+ ,offset index offset) n-word-bytes)
+ ,lowtag)))))))
+
(defmacro define-full-setter (name type offset lowtag scs el-type &optional translate)
`(progn
(define-vop (,name)
value)
(move result value)))))
+(defmacro define-full-setter+offset (name type offset lowtag scs el-type &optional translate)
+ `(progn
+ (define-vop (,name)
+ ,@(when translate
+ `((:translate ,translate)))
+ (:policy :fast-safe)
+ (:args (object :scs (descriptor-reg))
+ (index :scs (any-reg))
+ (value :scs ,scs :target result))
+ (:info offset)
+ (:arg-types ,type tagged-num
+ (:constant (constant-displacement other-pointer-lowtag
+ n-word-bytes
+ vector-data-offset))
+ ,el-type)
+ (:results (result :scs ,scs))
+ (:result-types ,el-type)
+ (:generator 4 ; was 5
+ (inst mov (make-ea :qword :base object :index index
+ :disp (- (* (+ ,offset offset) n-word-bytes) ,lowtag))
+ value)
+ (move result value)))
+ (define-vop (,(symbolicate name "-C"))
+ ,@(when translate
+ `((:translate ,translate)))
+ (:policy :fast-safe)
+ (:args (object :scs (descriptor-reg))
+ (value :scs ,scs :target result))
+ (:info index offset)
+ (:arg-types ,type
+ (:constant (load/store-index ,n-word-bytes ,(eval lowtag)
+ ,(eval offset)))
+ (:constant (constant-displacement other-pointer-lowtag
+ n-word-bytes
+ vector-data-offset))
+ ,el-type)
+ (:results (result :scs ,scs))
+ (:result-types ,el-type)
+ (:generator 3 ; was 5
+ (inst mov (make-ea :qword :base object
+ :disp (- (* (+ ,offset index offset) n-word-bytes)
+ ,lowtag))
+ value)
+ (move result value)))))
+
;;; helper for alien stuff.
-(defmacro with-pinned-objects ((&rest objects) &body body)
+
+(def!macro 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"
- `(multiple-value-prog1
- (progn
- ,@(loop for p in objects
- collect `(push-word-on-c-stack
- (int-sap (sb!kernel:get-lisp-obj-address ,p))))
- ,@body)
- ;; If the body returned normally, we should restore the stack pointer
- ;; for the benefit of any following code in the same function. If
- ;; there's a non-local exit in the body, sp is garbage anyway and
- ;; will get set appropriately from {a, the} frame pointer before it's
- ;; next needed
- (pop-words-from-c-stack ,(length objects))))
+collection."
+ (if objects
+ (let ((pins (make-gensym-list (length objects)))
+ (wpo (block-gensym "WPO")))
+ ;; BODY is stuffed in a function to preserve the lexical
+ ;; environment.
+ `(flet ((,wpo () (progn ,@body)))
+ (declare (muffle-conditions compiler-note))
+ ;; PINS are dx-allocated in case the compiler for some
+ ;; unfathomable reason decides to allocate value-cells
+ ;; for them -- since we have DX value-cells on x86oid
+ ;; platforms this still forces them on the stack.
+ (dx-let ,(mapcar #'list pins objects)
+ (multiple-value-prog1 (,wpo)
+ ;; TOUCH-OBJECT has a VOP with an empty body: compiler
+ ;; thinks we're using the argument and doesn't flush
+ ;; the variable, but we don't have to pay any extra
+ ;; beyond that -- and MULTIPLE-VALUE-PROG1 keeps them
+ ;; live till the body has finished. *whew*
+ ,@(mapcar (lambda (pin)
+ `(touch-object ,pin))
+ pins)))))
+ `(progn ,@body)))
projects / sbcl.git / blobdiff