# HG changeset patch
# User Stefan Anzinger <stefan.anzinger@gmail.com>
# Date 1405996636 25200
# Node ID eda09bc52ab9071f8c017a9739a675bee909c003
# Parent  cb416c08fe64db1f2d78387163aafdf39ea4f3d2
[SPARC] Fix handling of overflow parameter on stack.

diff -r cb416c08fe64 -r eda09bc52ab9 graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotPatchReturnAddressOp.java
--- a/graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotPatchReturnAddressOp.java	Mon Jul 21 11:16:25 2014 -0700
+++ b/graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotPatchReturnAddressOp.java	Mon Jul 21 19:37:16 2014 -0700
@@ -29,7 +29,6 @@
 import com.oracle.graal.api.code.*;
 import com.oracle.graal.api.meta.*;
 import com.oracle.graal.asm.sparc.*;
-import com.oracle.graal.asm.sparc.SPARCMacroAssembler.*;
 import com.oracle.graal.asm.sparc.SPARCAssembler.*;
 import com.oracle.graal.lir.*;
 import com.oracle.graal.lir.asm.*;
diff -r cb416c08fe64 -r eda09bc52ab9 graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotRegisterConfig.java
--- a/graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotRegisterConfig.java	Mon Jul 21 11:16:25 2014 -0700
+++ b/graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotRegisterConfig.java	Mon Jul 21 19:37:16 2014 -0700
@@ -95,11 +95,6 @@
 
     private final CalleeSaveLayout csl;
 
-    /**
-     * Offset where the extended arguments resides in the stack.
-     */
-    private final int extendedArgumentOffset = 16 * 8;
-
     private static Register findRegister(String name, Register[] all) {
         for (Register reg : all) {
             if (reg.name.equals(name)) {
@@ -200,7 +195,7 @@
 
         int currentGeneral = 0;
         int currentFloating = 0;
-        int currentStackOffset = extendedArgumentOffset;
+        int currentStackOffset = 0;
 
         for (int i = 0; i < parameterTypes.length; i++) {
             final Kind kind = parameterTypes[i].getKind();
@@ -240,8 +235,14 @@
             }
 
             if (locations[i] == null) {
+                // Stack slot is always aligned to its size in bytes
+                int typeSize = target.getSizeInBytes(kind);
+                int modulus = currentStackOffset % typeSize;
+                if (modulus != 0) {
+                    currentStackOffset += typeSize - modulus;
+                }
                 locations[i] = StackSlot.get(target.getLIRKind(kind.getStackKind()), currentStackOffset, !type.out);
-                currentStackOffset += Math.max(target.getSizeInBytes(kind), target.wordSize);
+                currentStackOffset += typeSize;
             }
         }
 
diff -r cb416c08fe64 -r eda09bc52ab9 graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCFrameMap.java
--- a/graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCFrameMap.java	Mon Jul 21 11:16:25 2014 -0700
+++ b/graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCFrameMap.java	Mon Jul 21 19:37:16 2014 -0700
@@ -34,11 +34,15 @@
  *
  * <pre>
  *   Base       Contents
- *
+ * 
  *            :                                :  -----
  *   caller   | incoming overflow argument n   |    ^
  *   frame    :     ...                        :    | positive
  *            | incoming overflow argument 0   |    | offsets
+ *            +--------------------------------+    |
+ *            |                                |    |
+ *            : register save area             :    |
+ *            |                                |    |
  *   ---------+--------------------------------+---------------------------
  *            | spill slot 0                   |    | negative   ^      ^
  *            :     ...                        :    v offsets    |      |
@@ -101,4 +105,16 @@
     protected StackSlot allocateNewSpillSlot(LIRKind kind, int additionalOffset) {
         return StackSlot.get(kind, -spillSize + additionalOffset, true);
     }
+
+    /**
+     * We must add the calleSaveAreaSize() when it is a in or out parameter
+     */
+    @Override
+    public int offsetForStackSlot(StackSlot slot) {
+        int offset = super.offsetForStackSlot(slot);
+        if (slot.getRawOffset() >= 0) { // If In or Out parameter
+            offset += calleeSaveAreaSize();
+        }
+        return offset;
+    }
 }
diff -r cb416c08fe64 -r eda09bc52ab9 graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java	Mon Jul 21 11:16:25 2014 -0700
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java	Mon Jul 21 19:37:16 2014 -0700
@@ -201,8 +201,11 @@
      * @return the offset of the stack slot
      */
     public int offsetForStackSlot(StackSlot slot) {
-        assert (!slot.getRawAddFrameSize() && slot.getRawOffset() < outgoingSize) || (slot.getRawAddFrameSize() && slot.getRawOffset() < 0 && -slot.getRawOffset() <= spillSize) ||
-                        (slot.getRawAddFrameSize() && slot.getRawOffset() >= 0);
+        // @formatter:off
+        assert (!slot.getRawAddFrameSize() && slot.getRawOffset() <  outgoingSize) ||
+               ( slot.getRawAddFrameSize() && slot.getRawOffset() <  0 && -slot.getRawOffset() <= spillSize) ||
+               ( slot.getRawAddFrameSize() && slot.getRawOffset() >= 0);
+        // @formatter:on
         if (slot.isInCallerFrame()) {
             accessesCallerFrame = true;
         }