Examples with OSRMapIterator org.jikesrvm.osr.OSRMapIterator used on opensource projects

Example 1 with OSRMapIterator

use of org.jikesrvm.osr.OSRMapIterator in project JikesRVM by JikesRVM.

the class OptExecutionStateExtractor method getExecStateSequence.

private ExecutionState getExecStateSequence(RVMThread thread, byte[] stack, Offset ipOffset, Offset fpOffset, int cmid, Offset tsFPOffset, TempRegisters registers, EncodedOSRMap osrmap) {
    // go through the stack frame and extract values
    // In the variable value list, we keep the order as follows:
    // L0, L1, ..., S0, S1, ....
    /* go over osr map element, build list of VariableElement.
    * assuming iterator has ordered element as
    *     L0, L1, ..., S0, S1, ...
    *
    *     ThreadSwitch
    *     threadSwitchFromOsr
    *     FOO                                        <-- fpOffset
    *
    * Also, all registers saved by threadSwitchFromDeopt method
    * is restored in "registers", address for object is converted
    * back to object references.
    *
    * This method should be called in non-GC critical section since
    * it allocates many objects.
    */
    // for 64-bit type values which have two int parts.
    // this holds the high part.
    int lvalue_one = 0;
    int lvtype_one = 0;
    // now recover execution states
    OSRMapIterator iterator = osrmap.getOsrMapIteratorForMCOffset(ipOffset);
    if (VM.VerifyAssertions)
        VM._assert(iterator != null);
    ExecutionState state = new ExecutionState(thread, fpOffset, cmid, iterator.getBcIndex(), tsFPOffset);
    MethodReference mref = MemberReference.getMethodRef(iterator.getMethodId());
    state.setMethod((NormalMethod) mref.peekResolvedMethod());
    // this is not caller, but the callee, reverse it when outside
    // of this function.
    state.callerState = null;
    if (VM.TraceOnStackReplacement) {
        VM.sysWriteln("osr map table of " + state.meth.toString());
    }
    while (iterator.hasMore()) {
        if (iterator.getMethodId() != state.meth.getId()) {
            ExecutionState newstate = new ExecutionState(thread, fpOffset, cmid, iterator.getBcIndex(), tsFPOffset);
            mref = MemberReference.getMethodRef(iterator.getMethodId());
            newstate.setMethod((NormalMethod) mref.peekResolvedMethod());
            // this is not caller, but the callee, reverse it when outside
            // of this function.
            newstate.callerState = state;
            state = newstate;
            if (VM.TraceOnStackReplacement) {
                VM.sysWriteln("osr map table of " + state.meth.toString());
            }
        }
        // create a VariableElement for it.
        boolean kind = iterator.getKind();
        char num = iterator.getNumber();
        byte tcode = iterator.getTypeCode();
        byte vtype = iterator.getValueType();
        int value = iterator.getValue();
        iterator.moveToNext();
        if (VM.TraceOnStackReplacement) {
            VM.sysWrite((kind == LOCAL) ? "L" : "S");
            VM.sysWrite((int) num);
            VM.sysWrite(" , ");
            if (vtype == ICONST) {
                VM.sysWrite("ICONST ");
                VM.sysWrite(value);
            } else if (vtype == PHYREG) {
                VM.sysWrite("PHYREG ");
                VM.sysWrite(GPR.lookup(value).toString());
            } else if (vtype == SPILL) {
                VM.sysWrite("SPILL  ");
                VM.sysWrite(value);
            }
            VM.sysWriteln();
        }
        switch(tcode) {
            case INT:
                {
                    int ibits = getIntBitsFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, ibits));
                    break;
                }
            case FLOAT:
                {
                    float fv = (float) getDoubleFrom(vtype, value, stack, fpOffset, registers);
                    int ibits = Magic.floatAsIntBits(fv);
                    state.add(new VariableElement(kind, num, tcode, ibits));
                    break;
                }
            case HIGH_64BIT:
                {
                    lvalue_one = value;
                    lvtype_one = vtype;
                    break;
                }
            case LONG:
                {
                    long lbits = getLongBitsFrom(lvtype_one, lvalue_one, vtype, value, stack, fpOffset, registers);
                    lvalue_one = 0;
                    lvtype_one = 0;
                    state.add(new VariableElement(kind, num, LONG, lbits));
                    break;
                }
            case DOUBLE:
                {
                    double dv = getDoubleFrom(vtype, value, stack, fpOffset, registers);
                    long lbits = Magic.doubleAsLongBits(dv);
                    state.add(new VariableElement(kind, num, tcode, lbits));
                    break;
                }
            // To be VERIFIED.
            case RET_ADDR:
                {
                    int bcIndex = getIntBitsFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, bcIndex));
                    break;
                }
            case WORD:
                {
                    // KV:TODO
                    if (VM.BuildFor64Addr) {
                        if (VM.VerifyAssertions) {
                            VM._assert(VM.NOT_REACHED);
                        } else {
                            VM.sysFail("Case not yet implemented for 64-bit addresssing.");
                        }
                    }
                    int word = getIntBitsFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, word));
                    break;
                }
            case REF:
                {
                    Object ref = getObjectFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, ref));
                    break;
                }
            default:
                if (VM.VerifyAssertions)
                    VM._assert(VM.NOT_REACHED);
                break;
        }
    // switch
    }
    return state;
}

Example 2 with OSRMapIterator

use of org.jikesrvm.osr.OSRMapIterator in project JikesRVM by JikesRVM.

the class OptExecutionStateExtractor method getExecStateSequence.

private ExecutionState getExecStateSequence(RVMThread thread, byte[] stack, Offset ipOffset, Offset fpOffset, int cmid, Offset tsFPOffset, TempRegisters registers, EncodedOSRMap osrmap) {
    // go through the stack frame and extract values
    // In the variable value list, we keep the order as follows:
    // L0, L1, ..., S0, S1, ....
    /* go over osr map element, build list of VariableElement.
    * assuming iterator has ordered element as
    *     L0, L1, ..., S0, S1, ...
    *
    *     RVMThread.ThreadSwitch
    *     OptSaveVolatile.threadSwitchFromDeopt
    *     FOO                                        <-- fpOffset
    *
    * Also, all registers saved by threadSwitchFromDeopt method
    * is restored in "registers", address for object is converted
    * back to object references.
    *
    * This method should be called in non-GC critical section since
    * it allocates many objects.
    */
    // for 64-bit type values which have two int parts.
    // this holds the high part.
    int lpart_one = 0;
    // now recover execution states
    OSRMapIterator iterator = osrmap.getOsrMapIteratorForMCOffset(ipOffset);
    if (VM.VerifyAssertions)
        VM._assert(iterator != null);
    ExecutionState state = new ExecutionState(thread, fpOffset, cmid, iterator.getBcIndex(), tsFPOffset);
    MethodReference mref = MemberReference.getMethodRef(iterator.getMethodId());
    state.setMethod((NormalMethod) mref.peekResolvedMethod());
    state.callerState = null;
    while (iterator.hasMore()) {
        if (iterator.getMethodId() != state.meth.getId()) {
            ExecutionState newstate = new ExecutionState(thread, fpOffset, cmid, iterator.getBcIndex(), tsFPOffset);
            mref = MemberReference.getMethodRef(iterator.getMethodId());
            newstate.setMethod((NormalMethod) mref.peekResolvedMethod());
            // this is not caller, but the callee, reverse it when outside
            // of this function.
            newstate.callerState = state;
            state = newstate;
        }
        // create a VariableElement for it.
        boolean kind = iterator.getKind();
        int num = iterator.getNumber();
        byte tcode = iterator.getTypeCode();
        byte vtype = iterator.getValueType();
        int value = iterator.getValue();
        iterator.moveToNext();
        switch(tcode) {
            case INT:
                {
                    int ibits = getIntBitsFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, ibits));
                    break;
                }
            case FLOAT:
                {
                    float fv = (float) getDoubleFrom(vtype, value, stack, fpOffset, registers);
                    int ibits = Magic.floatAsIntBits(fv);
                    state.add(new VariableElement(kind, num, tcode, ibits));
                    break;
                }
            case HIGH_64BIT:
                {
                    lpart_one = value;
                    break;
                }
            case LONG:
                {
                    long lbits = getLongBitsFrom(vtype, lpart_one, value, stack, fpOffset, registers);
                    lpart_one = 0;
                    state.add(new // not use LONG2,
                    VariableElement(// not use LONG2,
                    kind, // not use LONG2,
                    num, // not use LONG2,
                    LONG, lbits));
                    break;
                }
            case DOUBLE:
                {
                    double dv = getDoubleFrom(vtype, value, stack, fpOffset, registers);
                    long lbits = Magic.doubleAsLongBits(dv);
                    state.add(new VariableElement(kind, num, tcode, lbits));
                    break;
                }
            // To be VERIFIED.
            case RET_ADDR:
                {
                    int bcIndex = getIntBitsFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, bcIndex));
                    break;
                }
            case REF:
                {
                    Object ref = getObjectFrom(vtype, value, stack, fpOffset, registers);
                    state.add(new VariableElement(kind, num, tcode, ref));
                    break;
                }
            case WORD:
                {
                    if (VM.BuildFor32Addr) {
                        int word = getIntBitsFrom(vtype, value, stack, fpOffset, registers);
                        state.add(new VariableElement(kind, num, tcode, word));
                    } else {
                        long word = getLongBitsFrom(vtype, lpart_one, value, stack, fpOffset, registers);
                        lpart_one = 0;
                        state.add(new VariableElement(kind, num, tcode, word));
                    }
                    break;
                }
            default:
                if (VM.VerifyAssertions)
                    VM._assert(VM.NOT_REACHED);
                break;
        }
    // switch
    }
    return state;
}