0.pre8.34

		  === Threads merge, 1.5625 metres ===

	Reimplement CURRENT-THREAD-OFFSET-SAP using aliens on non-x86
	targets - should make other non-x86 targets easier to fix.
	Immediate effect is that control stack exhaustion checking now
	works on PPC.

diff --git a/src/code/target-unithread.lisp b/src/code/target-unithread.lisp
index c79c011..e7a1917 100644 (file)
--- a/src/code/target-unithread.lisp
+++ b/src/code/target-unithread.lisp
@@ -1,5 +1,11 @@
 (in-package "SB!THREAD")
 
+#-sb-fluid (declaim (inline sb!vm::current-thread-offset-sap))
+(defun sb!vm::current-thread-offset-sap (n) 
+  (declare (type (unsigned-byte 27) n))
+  (sb!sys:sap-ref-sap (alien-sap (extern-alien "all_threads" (* t))) 
+              (* n 4)))
+
 (defun current-thread-id ()
   (sb!sys:sap-int
    (sb!vm::current-thread-offset-sap sb!vm::thread-pid-slot)))

diff --git a/src/compiler/ppc/system.lisp b/src/compiler/ppc/system.lisp
index 3366e10..23f7a25 100644 (file)
--- a/src/compiler/ppc/system.lisp
+++ b/src/compiler/ppc/system.lisp
@@ -213,23 +213,6 @@
   (:generator 1
     (inst unimp pending-interrupt-trap)))
 
-(defknown current-thread-offset-sap ((unsigned-byte 32))  
-  system-area-pointer (flushable))
-
-(define-vop (current-thread-offset-sap)
-  (:results (sap :scs (sap-reg)))
-  (:result-types system-area-pointer)
-  (:translate current-thread-offset-sap)
-  (:args (n :scs (unsigned-reg) ))
-  (:temporary (:sc unsigned-reg :target sap) temp1)
-  (:temporary (:sc unsigned-reg) temp2)
-  (:arg-types unsigned-num)
-  (:policy :fast-safe)
-  (:generator 3
-    (inst slwi n temp1 2)
-    (inst lr temp2 (make-fixup (extern-alien-name "all_threads") :foreign))
-    (inst lwzx sap temp1 temp2)))
-
 (define-vop (halt)
   (:generator 1
     (inst unimp halt-trap)))

diff --git a/src/compiler/x86/system.lisp b/src/compiler/x86/system.lisp
index 803c580..4291164 100644 (file)
--- a/src/compiler/x86/system.lisp
+++ b/src/compiler/x86/system.lisp
@@ -274,25 +274,21 @@
   (:generator 1
     (inst break pending-interrupt-trap)))
 
+#!+sb-thread
 (defknown current-thread-offset-sap ((unsigned-byte 32))  
   system-area-pointer (flushable))
 
+#!+sb-thread
 (define-vop (current-thread-offset-sap)
   (:results (sap :scs (sap-reg)))
   (:result-types system-area-pointer)
   (:translate current-thread-offset-sap)
-  (:args (n :scs (unsigned-reg) #!+sb-thread :target #!+sb-thread sap))
-  #!-sb-thread (:temporary (:sc unsigned-reg :target sap) temp)
+  (:args (n :scs (unsigned-reg) :target sap))
   (:arg-types unsigned-num)
   (:policy :fast-safe)
-  #!+sb-thread
   (:generator 2
     (inst fs-segment-prefix)
-    (inst mov sap (make-ea :dword :disp 0 :index n :scale 4)))
-  #!-sb-thread
-  (:generator 2
-    (inst mov temp (make-fixup (extern-alien-name "all_threads") :foreign))
-    (inst mov sap (make-ea :dword :base temp :index n :scale 4))))
+    (inst mov sap (make-ea :dword :disp 0 :index n :scale 4))))
 
 (define-vop (halt)
   (:generator 1

diff --git a/version.lisp-expr b/version.lisp-expr
index 3571f6a..b4b6ca1 100644 (file)
--- a/version.lisp-expr
+++ b/version.lisp-expr
@@ -18,4 +18,4 @@
 ;;; versions, especially for internal versions off the main CVS
 ;;; branch, it gets hairier, e.g. "0.pre7.14.flaky4.13".)
 
-"0.pre8.37"
+"0.pre8.38"