Package org.jnode.assembler.x86

Examples of org.jnode.assembler.x86.X86TextAssembler

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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);

        // 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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     *
     * @param JvmType
     */
    private final 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);
            wstoreReg = valr;
        }

        // Release
        val.release(eContext);
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        final GPR refr = ref.getRegister();
        if (index.isConstant()) {
            final int offset = index.getValue() * scale;
            os.writeLEA(dst, refr, arrayDataOffset + offset);
        } else {
            final GPR32 idxr = (GPR32) index.getRegister();
            if (os.isCode32()) {
                os.writeLEA(dst, refr, idxr, scale, arrayDataOffset);
            } else {
                final GPR64 idxr64 = (GPR64) eContext.getGPRPool().getRegisterInSameGroup(idxr, JvmType.LONG);
                os.writeMOVSXD(idxr64, (GPR32) idxr);
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            // Calculate absolute address of jump target
            if (os.isCode32()) {
                os.writeADD(tmp, tmp, 0);
            } else {
                final GPR32 tmp2 = (GPR32) L1AHelper.requestRegister(eContext, JvmType.INT, false);
                os.writeMOV(BITS32, tmp2, tmp, 0);
                final GPR64 tmp2_64 = L1AHelper.get64BitReg(eContext, tmp2);
                os.writeMOVSXD(tmp2_64, tmp2);
                os.writeADD(tmp, tmp2_64);
                L1AHelper.releaseRegister(eContext, tmp2);
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        final GPR refr = ref.getRegister();
        if (index.isConstant()) {
            final int offset = index.getValue() * scale;
            os.writeLEA(dst, refr, arrayDataOffset + offset);
        } else {
            final GPR32 idxr = (GPR32) index.getRegister();
            if (os.isCode32()) {
                os.writeLEA(dst, refr, idxr, scale, arrayDataOffset);
            } else {
                final GPR64 idxr64 = (GPR64) eContext.getGPRPool().getRegisterInSameGroup(idxr, JvmType.LONG);
                os.writeMOVSXD(idxr64, (GPR32) idxr);
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            // Calculate absolute address of jump target
            if (os.isCode32()) {
                os.writeADD(tmp, tmp, 0);
            } else {
                final GPR32 tmp2 = (GPR32) L1AHelper.requestRegister(eContext, JvmType.INT, false);
                os.writeMOV(BITS32, tmp2, tmp, 0);
                final GPR64 tmp2_64 = L1AHelper.get64BitReg(eContext, tmp2);
                os.writeMOVSXD(tmp2_64, tmp2);
                os.writeADD(tmp, tmp2_64);
                L1AHelper.releaseRegister(eContext, tmp2);
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                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);
                // Store
                os.writeMOV(BITS64, helper.BP, disp, reg);
            }
        }
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Related Classes of org.jnode.assembler.x86.X86TextAssembler

  • 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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