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From: cvs at opencores.org<cvs@o...>
Date: Sat Aug 19 20:40:17 CEST 2006
Subject: [cvs-checkins] MODIFIED: jop ...
Date: 00/06/08 19:20:40

Modified: jop/java/target/src/jdk/java/lang System.java
Log:
added arraycopy()


Revision Changes Path
1.5 jop/java/target/src/jdk/java/lang/System.java

http://www.opencores.org/cvsweb.shtml/jop/java/target/src/jdk/java/lang/System.java.diff?r1=1.4&r2=1.5

(In the diff below, changes in quantity of whitespace are not shown.)

Index: System.java
===================================================================
RCS file: /cvsroot/martin/jop/java/target/src/jdk/java/lang/System.java,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -b -r1.4 -r1.5
--- System.java 25 Jun 2005 19:28:00 -0000 1.4
+++ System.java 19 Aug 2006 18:40:17 -0000 1.5
@@ -31,4 +31,60 @@
public static void exit(int i) {
Startup.exit();
}
+
+ public static void arraycopy(Object src, int srcOffset, Object dst,
+ int dstOffset, int length) {
+
+ long srcEnd, dstEnd;
+
+ if ((src == null) || (dst == null)) {
+ throw new NullPointerException();
+ }
+
+ srcEnd = length + srcOffset;
+ dstEnd = length + dstOffset;
+
+ int srcHandle = Native.toInt(src);
+ int dstHandle = Native.toInt(dst);
+
+ // the type field from the handle - see GC.java
+ int src_type = Native.rdMem(srcHandle+3);
+ int dst_type = Native.rdMem(dstHandle+3);
+
+ // 0 means it's a plain object
+ if (src_type==0 || dst_type==0) {
+ throw new ArrayStoreException();
+ }
+ // should be the same, right?
+ if (src_type!=dst_type) {
+ throw new ArrayStoreException();
+ }
+ // TODO: should we check the object types?
+
+ // TODO: synchronized with GC
+ synchronized (GC.getMutex()) {
+ int srcPtr = Native.rdMem(srcHandle);
+ int dstPtr = Native.rdMem(dstHandle);
+
+ int srcLen = Native.rdMem(srcPtr-1);
+ int dstLen = Native.rdMem(dstPtr-1);
+ if ((srcOffset < 0) || (dstOffset < 0) || (length < 0)
+ || (srcEnd > srcLen) || (dstEnd > dstLen))
+ throw new IndexOutOfBoundsException();
+
+ if (src==dst && srcOffset<dstOffset) {
+ for (int i=length-1; i>=0; --i) {
+ Native.wrMem(Native.rdMem(srcPtr + srcOffset + i), dstPtr
+ + dstOffset + i);
+ }
+ } else {
+ for (int i = 0; i < length; i++) {
+ Native.wrMem(Native.rdMem(srcPtr + srcOffset + i), dstPtr
+ + dstOffset + i);
+ }
+ }
+ }
+ }
+
+
}