Examples with Pointer org.graalvm.word.Pointer used on opensource projects

Example 66 with Pointer

use of org.graalvm.word.Pointer in project graal by oracle.

the class AESCryptSubstitutions method crypt.

private static void crypt(Object rcvr, byte[] in, int inOffset, byte[] out, int outOffset, boolean encrypt, boolean withOriginalKey) {
    checkArgs(in, inOffset, out, outOffset);
    Object realReceiver = PiNode.piCastNonNull(rcvr, AESCryptClass);
    Object kObject = RawLoadNode.load(realReceiver, kOffset, JavaKind.Object, LocationIdentity.any());
    Pointer kAddr = Word.objectToTrackedPointer(kObject).add(getArrayBaseOffset(JavaKind.Int));
    Word inAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(in, getArrayBaseOffset(JavaKind.Byte) + inOffset));
    Word outAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(out, getArrayBaseOffset(JavaKind.Byte) + outOffset));
    if (encrypt) {
        encryptBlockStub(ENCRYPT_BLOCK, inAddr, outAddr, kAddr);
    } else {
        if (withOriginalKey) {
            Object lastKeyObject = RawLoadNode.load(realReceiver, lastKeyOffset, JavaKind.Object, LocationIdentity.any());
            Pointer lastKeyAddr = Word.objectToTrackedPointer(lastKeyObject).add(getArrayBaseOffset(JavaKind.Byte));
            decryptBlockWithOriginalKeyStub(DECRYPT_BLOCK_WITH_ORIGINAL_KEY, inAddr, outAddr, kAddr, lastKeyAddr);
        } else {
            decryptBlockStub(DECRYPT_BLOCK, inAddr, outAddr, kAddr);
        }
    }
}

Example 67 with Pointer

use of org.graalvm.word.Pointer in project graal by oracle.

the class CRC32Substitutions method update.

/**
 * Removed in 9.
 */
@MethodSubstitution(optional = true)
static int update(int crc, int b) {
    final Pointer crcTableRawAddress = WordFactory.pointer(GraalHotSpotVMConfigNode.crcTableAddress());
    int c = ~crc;
    int index = (b ^ c) & 0xFF;
    int offset = index << 2;
    int result = crcTableRawAddress.readInt(offset);
    result = result ^ (c >>> 8);
    return ~result;
}

Example 68 with Pointer

use of org.graalvm.word.Pointer in project graal by oracle.

the class CipherBlockChainingSubstitutions method crypt.

private static void crypt(Object rcvr, byte[] in, int inOffset, int inLength, byte[] out, int outOffset, Object embeddedCipher, boolean encrypt, boolean withOriginalKey) {
    AESCryptSubstitutions.checkArgs(in, inOffset, out, outOffset);
    Object realReceiver = PiNode.piCastNonNull(rcvr, cipherBlockChainingClass);
    Object aesCipher = getAESCryptClass().cast(embeddedCipher);
    Object kObject = RawLoadNode.load(aesCipher, AESCryptSubstitutions.kOffset, JavaKind.Object, LocationIdentity.any());
    Object rObject = RawLoadNode.load(realReceiver, rOffset, JavaKind.Object, LocationIdentity.any());
    Pointer kAddr = Word.objectToTrackedPointer(kObject).add(getArrayBaseOffset(JavaKind.Int));
    Pointer rAddr = Word.objectToTrackedPointer(rObject).add(getArrayBaseOffset(JavaKind.Byte));
    Word inAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(in, getArrayBaseOffset(JavaKind.Byte) + inOffset));
    Word outAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(out, getArrayBaseOffset(JavaKind.Byte) + outOffset));
    if (encrypt) {
        encryptAESCryptStub(ENCRYPT, inAddr, outAddr, kAddr, rAddr, inLength);
    } else {
        if (withOriginalKey) {
            Object lastKeyObject = RawLoadNode.load(aesCipher, AESCryptSubstitutions.lastKeyOffset, JavaKind.Object, LocationIdentity.any());
            Pointer lastKeyAddr = Word.objectToTrackedPointer(lastKeyObject).add(getArrayBaseOffset(JavaKind.Byte));
            decryptAESCryptWithOriginalKeyStub(DECRYPT_WITH_ORIGINAL_KEY, inAddr, outAddr, kAddr, rAddr, inLength, lastKeyAddr);
        } else {
            decryptAESCryptStub(DECRYPT, inAddr, outAddr, kAddr, rAddr, inLength);
        }
    }
}

Example 69 with Pointer

use of org.graalvm.word.Pointer in project graal by oracle.

the class AlignedHeapChunkMemoryWalkerAccessFeature method getObjectOffset.

/**
 * Return the offset of an object within the objects part of a chunk.
 */
private static UnsignedWord getObjectOffset(AlignedHeader that, Object obj) {
    final Pointer objectsStart = getObjectsStart(that);
    final Pointer objectPointer = Word.objectToUntrackedPointer(obj);
    assert objectsStart.belowOrEqual(objectPointer);
    assert objectPointer.belowOrEqual(that.getEnd());
    return objectPointer.subtract(objectsStart);
}

Example 70 with Pointer

use of org.graalvm.word.Pointer in project graal by oracle.

the class AlignedHeapChunkMemoryWalkerAccessFeature method allocateMemory.

/**
 * Allocate memory within this AlignedHeapChunk. No initialization of the memory happens here.
 */
static Pointer allocateMemory(AlignedHeader that, UnsignedWord size) {
    Pointer result = WordFactory.nullPointer();
    final UnsignedWord available = availableObjectMemory(that);
    /* Is memory available for the requested size? */
    if (size.belowOrEqual(available)) {
        /* Returned memory is at the start, */
        result = that.getTop();
        final Pointer newTop = result.add(size);
        setTopCarefully(that, newTop);
    }
    return result;
}