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changeset 16441:0de9f76a4b3d

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use a location for stack banging
author Lukas Stadler <lukas.stadler@oracle.com>
date Tue, 08 Jul 2014 16:14:09 +0200
parents f1e4ed5ac7d2
children a6c3ea7ac369
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/DeoptimizationStub.java graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/UncommonTrapStub.java
diffstat 2 files changed, 5 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/DeoptimizationStub.java	Tue Jul 08 16:13:35 2014 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/DeoptimizationStub.java	Tue Jul 08 16:14:09 2014 +0200
@@ -135,7 +135,7 @@
          * Stack bang to make sure there's enough room for the interpreter frames. Bang stack for
          * total size of the interpreter frames plus shadow page size. Bang one page at a time
          * because large sizes can bang beyond yellow and red zones.
-         *
+         * 
          * @deprecated This code should go away as soon as JDK-8032410 hits the Graal repository.
          */
         final int totalFrameSizes = unrollBlock.readInt(deoptimizationUnrollBlockTotalFrameSizesOffset());
@@ -143,7 +143,7 @@
         Word stackPointer = readRegister(stackPointerRegister);
 
         for (int i = 1; i < bangPages; i++) {
-            stackPointer.writeInt((-i * pageSize()) + stackBias(), 0);
+            stackPointer.writeInt((-i * pageSize()) + stackBias(), 0, UncommonTrapStub.STACK_BANG_LOCATION);
         }
 
         // Load number of interpreter frames.
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/UncommonTrapStub.java	Tue Jul 08 16:13:35 2014 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/UncommonTrapStub.java	Tue Jul 08 16:14:09 2014 +0200
@@ -77,6 +77,8 @@
  */
 public class UncommonTrapStub extends SnippetStub {
 
+    public static final LocationIdentity STACK_BANG_LOCATION = new NamedLocationIdentity("stack bang");
+
     private final TargetDescription target;
 
     public UncommonTrapStub(HotSpotProviders providers, TargetDescription target, HotSpotForeignCallLinkage linkage) {
@@ -152,7 +154,7 @@
         Word stackPointer = readRegister(stackPointerRegister);
 
         for (int i = 1; i < bangPages; i++) {
-            stackPointer.writeInt((-i * pageSize()) + stackBias(), 0);
+            stackPointer.writeInt((-i * pageSize()) + stackBias(), 0, STACK_BANG_LOCATION);
         }
 
         // Load number of interpreter frames.