(- other-pointer-lowtag)))
,reg))
+#!+sb-thread
+(defmacro load-tl-symbol-value (reg symbol)
+ `(progn
+ (inst mov ,reg
+ (make-ea :dword
+ :disp (+ nil-value
+ (static-symbol-offset ',symbol)
+ (ash symbol-tls-index-slot word-shift)
+ (- other-pointer-lowtag))))
+ (inst fs-segment-prefix)
+ (inst mov ,reg (make-ea :dword :scale 1 :index ,reg))))
+#!-sb-thread
+(defmacro load-tl-symbol-value (reg symbol) `(load-symbol-value ,reg ,symbol))
+#!+sb-thread
+(defmacro store-tl-symbol-value (reg symbol temp)
+ `(progn
+ (inst mov ,temp
+ (make-ea :dword
+ :disp (+ nil-value
+ (static-symbol-offset ',symbol)
+ (ash symbol-tls-index-slot word-shift)
+ (- other-pointer-lowtag))))
+ (inst fs-segment-prefix)
+ (inst mov (make-ea :dword :scale 1 :index ,temp) ,reg)))
+#!-sb-thread
+(defmacro store-tl-symbol-value (reg symbol temp)
+ `(store-symbol-value ,reg ,symbol))
+
(defmacro load-type (target source &optional (offset 0))
#!+sb-doc
"Loads the type bits of a pointer into target independent of
,@forms))
\f
;;;; error code
-(eval-when (:compile-toplevel :load-toplevel :execute)
+(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
(cons 'progn
(emit-error-break vop error-trap error-code values)))
-;;; not used in SBCL
-#|
-(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
- ,@(emit-error-break vop cerror-trap error-code values)
- (inst jmp ,label)))
-|#
-
(defmacro generate-error-code (vop error-code &rest values)
#!+sb-doc
"Generate-Error-Code Error-code Value*
(error-call ,vop ,error-code ,@values)
start-lab)))
-;;; not used in SBCL
-#|
-(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
- the GENERATE-CERROR-CODE form."
- (let ((continue (gensym "CONTINUE-LABEL-"))
- (error (gensym "ERROR-LABEL-")))
- `(let ((,continue (gen-label))
- (,error (gen-label)))
- (emit-label ,continue)
- (assemble (*elsewhere*)
- (emit-label ,error)
- (cerror-call ,vop ,continue ,error-code ,@values))
- ,error)))
-|#
\f
;;;; PSEUDO-ATOMIC
;;; FIXME: It appears that PSEUDO-ATOMIC is used to wrap operations which leave
;;; untagged memory lying around, but some documentation would be nice.
+#!+sb-thread
+(defmacro pseudo-atomic (&rest forms)
+ (with-unique-names (label)
+ `(let ((,label (gen-label)))
+ (inst fs-segment-prefix)
+ (inst mov (make-ea :byte :disp (* 4 thread-pseudo-atomic-atomic-slot)) 1)
+ (inst fs-segment-prefix)
+ (inst mov (make-ea :byte
+ :disp (* 4 thread-pseudo-atomic-interrupted-slot)) 0)
+ ,@forms
+ (inst fs-segment-prefix)
+ (inst mov (make-ea :byte :disp (* 4 thread-pseudo-atomic-atomic-slot)) 0)
+ (inst fs-segment-prefix)
+ (inst cmp (make-ea :byte
+ :disp (* 4 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))))
+
+#!-sb-thread
(defmacro pseudo-atomic (&rest forms)
- (let ((label (gensym "LABEL-")))
+ (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-interrupted*)
- (ash symbol-value-slot word-shift)
- ;; FIXME: Use mask, not minus, to
- ;; take out type bits.
- (- other-pointer-lowtag)))
+ (static-symbol-offset
+ '*pseudo-atomic-interrupted*)
+ (ash symbol-value-slot word-shift)
+ ;; FIXME: Use mask, not minus, to
+ ;; take out type bits.
+ (- other-pointer-lowtag)))
0)
(inst mov (make-ea :byte :disp (+ nil-value
- (static-symbol-offset
- '*pseudo-atomic-atomic*)
- (ash symbol-value-slot word-shift)
- (- other-pointer-lowtag)))
+ (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)))
+ (static-symbol-offset
+ '*pseudo-atomic-atomic*)
+ (ash symbol-value-slot word-shift)
+ (- other-pointer-lowtag)))
0)
;; KLUDGE: Is there any requirement for interrupts to be
;; handled in order? It seems as though an interrupt coming
;; are pending? I wish I could find the documentation for
;; pseudo-atomics.. -- WHN 19991130
(inst cmp (make-ea :byte
- :disp (+ nil-value
- (static-symbol-offset
- '*pseudo-atomic-interrupted*)
- (ash symbol-value-slot word-shift)
- (- other-pointer-lowtag)))
+ :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))))
+
+
\f
;;;; indexed references
projects / sbcl.git / blobdiff