[cmucl-cvs] [git] CMU Common Lisp branch master updated. snapshot-2012-09-4-g3832e02

[Raymond Toy]

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- Log -----------------------------------------------------------------
commit 3832e020b43c1270e0710097381fb718271e61bf
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Tue Sep 25 21:09:46 2012 -0700

    Fix ticket:63.

diff --git a/src/compiler/x86/system.lisp b/src/compiler/x86/system.lisp
index edd4aad..bb32332 100644
--- a/src/compiler/x86/system.lisp
+++ b/src/compiler/x86/system.lisp
@@ -1,4 +1,4 @@
-;;; -*- Mode: LISP; Syntax: Common-Lisp; Base: 10; Package: x86 -*-
+4;;; -*- Mode: LISP; Syntax: Common-Lisp; Base: 10; Package: x86 -*-
 ;;;
 ;;; **********************************************************************
 ;;; This code was written as part of the CMU Common Lisp project at
@@ -598,11 +598,21 @@
   (:result-types unsigned-num unsigned-num)
   (:temporary (:sc unsigned-reg :offset eax-offset :target lo) eax)
   (:temporary (:sc unsigned-reg :offset edx-offset :target hi) edx)
+  ;; CPUID writes to eax, ebx, ecx, and edx.  We need temporaries for
+  ;; ebx and ecx so we don't destroy any live uses of ebx and ecx.
+  (:temporary (:sc unsigned-reg :offset ebx-offset
+		   :from (:eval 0) :to (:result 1))
+	      ebx)
+  (:temporary (:sc unsigned-reg :offset ecx-offset
+		   :from (:eval 0) :to (:result 2))
+	      ecx)
+  (:ignore ebx ecx)
   (:generator 1
-     (inst cpuid)
-     (inst rdtsc)
-     (move hi edx)
-     (move lo eax)))
+    (inst mov eax 0)
+    (inst cpuid)
+    (inst rdtsc)
+    (move hi edx)
+    (move lo eax)))
 
 #+pentium
 (defun read-cycle-counter ()

-----------------------------------------------------------------------

Summary of changes:
 src/compiler/x86/system.lisp |   20 +++++++++++++++-----
 1 files changed, 15 insertions(+), 5 deletions(-)


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