X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fhppa%2Fmacros.lisp;h=b0ceb5aec324b32e944ba88075579ecca9404568;hb=1af3faa2b79125b774c2182cab841ed7ee555bed;hp=5daaacef1774fffe19e86fd8cc3bb1a20d91662b;hpb=27a028cff1559dec1cb1faaee01659ade816c908;p=sbcl.git

diff --git a/src/compiler/hppa/macros.lisp b/src/compiler/hppa/macros.lisp
index 5daaace..b0ceb5a 100644
--- a/src/compiler/hppa/macros.lisp
+++ b/src/compiler/hppa/macros.lisp
@@ -87,9 +87,7 @@
 
 ;;;; 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))
@@ -97,7 +95,6 @@
        (sc-case stack
 	 ((control-stack)
 	  (loadw reg cfp-tn offset))))))
-
 (defmacro store-stack-tn (stack reg)
   `(let ((stack ,stack)
 	 (reg ,reg))
@@ -128,6 +125,8 @@
   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"))
   (once-only ((result-tn result-tn) (temp-tn temp-tn)
 	      (type-code type-code) (size size))
     `(pseudo-atomic (:extra (pad-data-block ,size))
@@ -187,8 +186,7 @@
   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*)
@@ -196,21 +194,18 @@
 	   (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
 (defmacro pseudo-atomic ((&key (extra 0)) &rest forms)
   (let ((n-extra (gensym)))
     `(let ((,n-extra ,extra))
        (inst addi 4 alloc-tn alloc-tn)
        ,@forms
        (inst addit (- ,n-extra 4) alloc-tn alloc-tn :od))))
-
-
 
-;;;; Indexed references:
+;;;; indexed references
 
 (deftype load/store-index (scale lowtag min-offset
 				 &optional (max-offset min-offset))
@@ -371,3 +366,12 @@
 		 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))