Examples of org.jnode.assembler.x86.X86Utils

org.jnode.assembler.x86.X86Register.GPR
@author epr

     */
    public final void visit_tableswitch(int defAddress, int lowValue, int highValue, int[] addresses) {
        // IMPROVE: check Jaos implementation
        final IntItem val = vstack.popInt();
        val.load(eContext);
        GPR valr = val.getRegister();
        vstack.push(eContext);


        final int n = addresses.length;
        if ((n > 4) && os.isCode32()) {
            // Optimized version.  Needs some overhead, so only useful for
            // larger tables.
            counters.getCounter("tableswitch-opt").inc();


            final GPR tmp = (GPR) L1AHelper.requestRegister(eContext, JvmType.REFERENCE, false);
            if (os.isCode64()) {
                GPR64 valr64 = L1AHelper.get64BitReg(eContext, valr);
                os.writeMOVSXD(valr64, (GPR32) valr);
                valr = valr64;
            }

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                throw new IllegalArgumentException("Invalid type " + jvmType);
        }


        // Create result
        final WordItem result;
        final GPR resultr;
        result = L1AHelper.requestWordRegister(eContext, resultType,
            (valSize == BYTESIZE));
        resultr = result.getRegister();


        // Load
        idx.loadIf(eContext, ~Item.Kind.CONSTANT);
        ref.load(eContext);
        final GPR refr = ref.getRegister();


        // Verify
        checkBounds(ref, idx);


        if (jvmType == JvmType.CHAR) {
            // Clear resultr, so we avoid a MOVZX afterwards.
            os.writeXOR(resultr, resultr);
        }


        // Load data
        if (idx.isConstant()) {
            final int offset = idx.getValue() * scale;
            os.writeMOV(valSize, resultr, refr, offset + arrayDataOffset);
        } else {
            GPR idxr = idx.getRegister();
            if (os.isCode64()) {
                final GPR64 idxr64 = (GPR64) eContext.getGPRPool().getRegisterInSameGroup(idxr, JvmType.LONG);
                os.writeMOVSXD(idxr64, (GPR32) idxr);
                idxr = idxr64;
            }

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        } else {
            val.load(eContext);
        }
        idx.loadIf(eContext, ~Item.Kind.CONSTANT | extraLoadIdxMask);
        ref.load(eContext);
        final GPR refr = ref.getRegister();
        final GPR valr = val.getRegister();
        final X86RegisterPool pool = eContext.getGPRPool();


        // Verify
        checkBounds(ref, idx);


        //todo spec issue: add type compatibility check (elemType <- valueType), throw ArrayStoreException


        // Store
        if (idx.isConstant()) {
            final int offset = idx.getValue() * scale;
            os.writeMOV(valSize, refr, offset + arrayDataOffset, valr);
        } else {
            GPR idxr = idx.getRegister();
            if (os.isCode64()) {
                final GPR64 idxr64 = (GPR64) pool.getRegisterInSameGroup(idxr, JvmType.LONG);
                os.writeMOVSXD(idxr64, (GPR32) idxr);
                idxr = idxr64;
            }
            os.writeMOV(valSize, refr, idxr, scale, arrayDataOffset, valr);
        }


        // Call write barrier (reference only)
        if ((jvmType == JvmType.REFERENCE) && useBarrier) {
            // the write barrier could easily be modified to avoid using a
            // scratch register
            final GPR idxr;
            if (os.isCode32()) {
                idxr = idx.getRegister();
            } else {
                idxr = (GPR) eContext.getGPRPool().getRegisterInSameGroup(idx.getRegister(), JvmType.LONG);
            }
            final GPR scratch = (GPR) pool.request(JvmType.INT);
            helper.writeArrayStoreWriteBarrier(refr, idxr, valr, scratch);
            pool.release(scratch);
        }


        // Release

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    /**
     * Pop a word item of the stack and return it to the caller
     */
    private void wreturn(int jvmType, boolean callVisitReturn) {
        final WordItem val = (WordItem) vstack.pop(jvmType);
        final GPR reg;
        if (os.isCode32() || (jvmType != JvmType.REFERENCE)) {
            reg = X86Register.EAX;
        } else {
            reg = X86Register.RAX;
        }

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            .getDeclaringClass();
        if (!declClass.isAlwaysInitialized()) {
            final Label curInstrLabel = getCurInstrLabel();


            // Allocate a register to hold the class
            final GPR classReg = (GPR) L1AHelper.requestRegister(eContext, JvmType.REFERENCE, false);


            // Load classRef into the register
            // Load the class from the statics table
            if (os.isCode32()) {
                helper.writeGetStaticsEntry(new Label(curInstrLabel + "$$ic"),

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            }
            os.writePOP(helper.BP, disp);
        } else {
            // Load into register
            val.load(eContext);
            final GPR valr = val.getRegister();
            // Store
            os.writeMOV(valr.getSize(), helper.BP, disp, valr);
        }


        // Release
        val.release(eContext);
    }

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        final Label curInstrLabel = getCurInstrLabel();
        final Label test = new Label(curInstrLabel + "$$cbtest");
        final Label failed = new Label(curInstrLabel + "$$cbfailed");


        assertCondition(ref.isGPR(), "ref must be in a register");
        final GPR refr = ref.getRegister();


        os.writeJMP(test);
        os.setObjectRef(failed);
        // Call SoftByteCodes.throwArrayOutOfBounds
        os.writePUSH(refr);

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        final RefItem ref = vstack.popRef();


        val.load(eContext);
        idx.loadIf(eContext, ~Item.Kind.CONSTANT);
        ref.load(eContext);
        final GPR refr = ref.getRegister();


        // Check bound
        checkBounds(ref, idx);


        // Store

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            }
        } else {
            // Load into register
            val.load(eContext);
            if (os.isCode32()) {
                final GPR lsb = val.getLsbRegister(eContext);
                final GPR msb = val.getMsbRegister(eContext);
                // Store
                os.writeMOV(INTSIZE, helper.BP, disp + LSB, lsb);
                os.writeMOV(INTSIZE, helper.BP, disp + MSB, msb);
            } else {
                final GPR64 reg = val.getRegister(eContext);

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            if (countConstOps) {
                counters.getCounter("TODOishift-const").inc();
            }
        }


        final GPR valr = val.getRegister();
        if (isconst) {
            final int imm8 = shift.getValue();
            os.writeShift(operation, valr, imm8);
        } else {
            os.writeShift_CL(operation, valr);

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org.jnode.assembler.x86.X86BinaryAssembler

org.jnode.assembler.x86.X86Register.GPR

org.jnode.build.x86.BootImageBuilder

org.jnode.jnasm.assembler.x86.X86Core

org.jnode.jnasm.assembler.x86.X86Support

org.jnode.test.core.CompilerTest

org.jnode.test.ResolverTest

org.jnode.test.X86StreamTest

org.jnode.vm.compiler.ir.IRTest

org.jnode.vm.compiler.ir.NativeTest

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