1 package com.tapina.robe.swi.clib.string;
2
3 import com.tapina.robe.runtime.ByteArray;
4 import com.tapina.robe.runtime.Environment;
5 import com.tapina.robe.runtime.MemoryMap;
6 import com.tapina.robe.swi.clib.Stub;
7
8 /***
9 * This function copies a3 characters from a2 to a1. The areas to be copied must not overlap.
10 * If you want to copy between overlapping objects, use memmove .
11 * Returns: a1
12 */
13 public class MemCpy extends Stub {
14 public void executeStub(Environment environment) {
15 final MemoryMap memoryMap = environment.getMemoryMap();
16 final int[] R = environment.getCpu().R;
17 final int count = R[2];
18 final ByteArray ptr2 = memoryMap.getByteArray(R[1], count, false);
19 final ByteArray ptr1 = memoryMap.getByteArray(R[0], count, true);
20 System.arraycopy(ptr2.getArray(), ptr2.getOffset(), ptr1.getArray(), ptr1.getOffset(), count);
21 }
22 }