X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fppc%2Fmacros.lisp;h=230bde16554e994e6bb04817c24b7514ec191940;hb=c7de1989d006e0b3a4f26143b7a81c9bdb754101;hp=2dfb14be891c802b7396eb64f886661f418bca3f;hpb=7ce4dc62a7b03590b127bb950738e771e33341a7;p=sbcl.git

diff --git a/src/compiler/ppc/macros.lisp b/src/compiler/ppc/macros.lisp
index 2dfb14b..230bde1 100644
--- a/src/compiler/ppc/macros.lisp
+++ b/src/compiler/ppc/macros.lisp
@@ -102,10 +102,7 @@
 
 ;;;; Stack TN's
 
-;;; Load-Stack-TN, Store-Stack-TN  --  Interface
-;;;
-;;;    Move a stack TN to a register and vice-versa.
-;;;
+;;; Move a stack TN to a register and vice-versa.
 (defmacro load-stack-tn (reg stack)
   `(let ((reg ,reg)
 	 (stack ,stack))
@@ -113,7 +110,6 @@
        (sc-case stack
 	 ((control-stack)
 	  (loadw reg cfp-tn offset))))))
-
 (defmacro store-stack-tn (stack reg)
   `(let ((stack ,stack)
 	 (reg ,reg))
@@ -122,9 +118,6 @@
 	 ((control-stack)
 	  (storew reg cfp-tn offset))))))
 
-
-;;; MAYBE-LOAD-STACK-TN  --  Interface
-;;;
 (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)
@@ -139,7 +132,6 @@
 
 
 ;;;; Storage allocation:
-
 (defmacro with-fixed-allocation ((result-tn flag-tn temp-tn type-code size)
 				 &body body)
   "Do stuff to allocate an other-pointer object of fixed Size with a single
@@ -157,22 +149,6 @@
 
 
 ;;;; 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))))
-     (declare (type (vector (unsigned-byte 8) 16) ,var))
-     (setf (fill-pointer ,var) 0)
-     (unwind-protect
-	 (progn
-	   ,@body)
-       (push ,var *adjustable-vectors*))))
-
 (eval-when (:compile-toplevel :load-toplevel :execute)
   (defun emit-error-break (vop kind code values)
     (let ((vector (gensym)))
@@ -221,8 +197,7 @@
   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*)
@@ -230,18 +205,17 @@
 	   (emit-label ,error)
 	   (cerror-call ,vop ,continue ,error-code ,@values)
 	   ,error)))))
-
-
 
-;;; PSEUDO-ATOMIC -- Handy macro for making sequences look atomic.
+;;;; PSEUDO-ATOMIC
+
+;;; handy macro for making sequences look atomic
 ;;;
-;;; flag-tn must be wired to NL3. If a deferred interrupt happens
-;;; while we have the low bits of alloc-tn set, we add a "large"
-;;; constant to flag-tn.  On exit, we add flag-tn to alloc-tn
-;;; which (a) aligns alloc-tn again and (b) makes alloc-tn go
-;;; negative.  We then trap if alloc-tn's negative (handling the
-;;; deferred interrupt) and using flag-tn - minus the large constant -
-;;; to correct alloc-tn.
+;;; FLAG-TN must be wired to NL3. If a deferred interrupt happens
+;;; while we have the low bits of ALLOC-TN set, we add a "large"
+;;; constant to FLAG-TN. On exit, we add FLAG-TN to ALLOC-TN which (a)
+;;; aligns ALLOC-TN again and (b) makes ALLOC-TN go negative. We then
+;;; trap if ALLOC-TN's negative (handling the deferred interrupt) and
+;;; using FLAG-TN - minus the large constant - to correct ALLOC-TN.
 (defmacro pseudo-atomic ((flag-tn &key (extra 0)) &rest forms)
   (let ((n-extra (gensym)))
     `(let ((,n-extra ,extra))