Examples with Entrypoint org.vmmagic.pragma.Entrypoint used on opensource projects

Example 1 with Entrypoint

use of org.vmmagic.pragma.Entrypoint in project JikesRVM by JikesRVM.

the class VM method boot.

/**
 * Begin VM execution.<p>
 *
 * Uninterruptible because we are not setup to execute a yieldpoint
 * or stackoverflow check in the prologue this early in booting.<p>
 *
 * The following machine registers are set by "C" bootstrap program
 * before calling this method:
 * <ol>
 *   <li>JTOC_POINTER - required for accessing globals
 *   <li>FRAME_POINTER - required for accessing locals
 *   <li>THREAD_ID_REGISTER - required for method prolog (stack overflow check)
 * </ol>
 */
@UnpreemptibleNoWarn("No point threading until threading is booted")
@Entrypoint
public static void boot() {
    writingBootImage = false;
    runningVM = true;
    verboseBoot = BootRecord.the_boot_record.verboseBoot;
    verboseSignalHandling = BootRecord.the_boot_record.verboseSignalHandling != 0;
    sysWriteLockOffset = Entrypoints.sysWriteLockField.getOffset();
    if (verboseBoot >= 1)
        VM.sysWriteln("Booting");
    // register.
    if (verboseBoot >= 1)
        VM.sysWriteln("Setting up current RVMThread");
    if (VM.BuildForIA32) {
        org.jikesrvm.ia32.ThreadLocalState.boot();
    } else {
        if (VM.VerifyAssertions)
            VM._assert(VM.BuildForPowerPC);
        org.jikesrvm.ppc.ThreadLocalState.boot();
    }
    // 
    if (verboseBoot >= 1)
        VM.sysWriteln("Doing thread initialization");
    RVMThread currentThread = RVMThread.getCurrentThread();
    currentThread.stackLimit = Magic.objectAsAddress(currentThread.getStack()).plus(StackFrameLayout.getStackSizeGuard());
    finishBooting();
}

Example 2 with Entrypoint

use of org.vmmagic.pragma.Entrypoint in project JikesRVM by JikesRVM.

the class InterfaceInvocation method unresolvedInvokeinterfaceImplementsTest.

/**
 * <code>mid</code> is the dictionary id of an interface method we are trying to invoke
 * <code>RHStib</code> is the TIB of an object on which we are attempting to invoke it.
 *
 * We were unable to resolve the member reference at compile time.
 * Therefore we must resolve it now and then call invokeinterfaceImplementsTest
 * with the right LHSclass.
 *
 * @param mid     Dictionary id of the {@link MemberReference} for the target interface method.
 * @param rhsObject  The object on which we are attempting to invoke the interface method
 */
@Entrypoint
public static void unresolvedInvokeinterfaceImplementsTest(int mid, Object rhsObject) throws IncompatibleClassChangeError {
    RVMMethod sought = MemberReference.getMemberRef(mid).asMethodReference().resolveInterfaceMethod();
    RVMClass LHSclass = sought.getDeclaringClass();
    if (!LHSclass.isResolved()) {
        LHSclass.resolve();
    }
    /* If the object is not null, ensure that it implements the interface.
     * If it is null, then we return to our caller and let them raise the
     * null pointer exception when they attempt to get the object's TIB so
     * they can actually make the interface call.
     */
    if (rhsObject != null) {
        TIB RHStib = ObjectModel.getTIB(rhsObject);
        if (LHSclass.isInterface() && DynamicTypeCheck.instanceOfInterface(LHSclass, RHStib))
            return;
        // Raise an IncompatibleClassChangeError.
        throw new IncompatibleClassChangeError();
    }
}

Example 3 with Entrypoint

use of org.vmmagic.pragma.Entrypoint in project JikesRVM by JikesRVM.

the class Barriers method byteFieldWrite.

/**
 * Barrier for writes of bytes into fields of instances (i.e. putfield).
 *
 * @param ref the object which is the subject of the putfield
 * @param value the new value for the field
 * @param offset the offset of the field to be modified
 * @param locationMetadata an int that encodes the source location being modified
 */
@Inline
@Entrypoint
public static void byteFieldWrite(Object ref, byte value, Offset offset, int locationMetadata) {
    if (NEEDS_BYTE_GC_WRITE_BARRIER) {
        ObjectReference src = ObjectReference.fromObject(ref);
        Selected.Mutator.get().byteWrite(src, src.toAddress().plus(offset), value, offset.toWord(), Word.fromIntZeroExtend(locationMetadata), INSTANCE_FIELD);
    } else if (VM.VerifyAssertions)
        VM._assert(VM.NOT_REACHED);
}

Example 4 with Entrypoint

use of org.vmmagic.pragma.Entrypoint in project JikesRVM by JikesRVM.

the class Barriers method floatArrayRead.

/**
 * Barrier for loads of floats from fields of arrays (i.e. faload).
 *
 * @param ref the array containing the reference.
 * @param index the index into the array were the reference resides.
 * @return the value read from the array
 */
@Inline
@Entrypoint
public static float floatArrayRead(float[] ref, int index) {
    if (NEEDS_FLOAT_GC_READ_BARRIER) {
        ObjectReference array = ObjectReference.fromObject(ref);
        Offset offset = Offset.fromIntZeroExtend(index << LOG_BYTES_IN_FLOAT);
        return Selected.Mutator.get().floatRead(array, array.toAddress().plus(offset), offset.toWord(), Word.zero(), ARRAY_ELEMENT);
    } else if (VM.VerifyAssertions)
        VM._assert(VM.NOT_REACHED);
    return 0;
}

Example 5 with Entrypoint

use of org.vmmagic.pragma.Entrypoint in project JikesRVM by JikesRVM.

the class Barriers method floatArrayWrite.

/**
 * Barrier for writes of floats into arrays (i.e. fastore).
 *
 * @param ref the array which is the subject of the astore
 * @param index the index into the array where the new reference
 * resides.  The index is the "natural" index into the array, for
 * example a[index].
 * @param value the value to be stored.
 */
@Inline
@Entrypoint
public static void floatArrayWrite(float[] ref, int index, float value) {
    if (NEEDS_FLOAT_GC_WRITE_BARRIER) {
        ObjectReference array = ObjectReference.fromObject(ref);
        Offset offset = Offset.fromIntZeroExtend(index << LOG_BYTES_IN_FLOAT);
        Selected.Mutator.get().floatWrite(array, array.toAddress().plus(offset), value, offset.toWord(), Word.zero(), ARRAY_ELEMENT);
    } else if (VM.VerifyAssertions)
        VM._assert(VM.NOT_REACHED);
}