The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit/x64/Bailouts-x64.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,76 @@
     1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
     1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
     1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
     1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.9 +
    1.10 +#include "jit/Bailouts.h"
    1.11 +
    1.12 +using namespace js;
    1.13 +using namespace js::jit;
    1.14 +
    1.15 +#if defined(_WIN32)
    1.16 +# pragma pack(push, 1)
    1.17 +#endif
    1.18 +
    1.19 +namespace js {
    1.20 +namespace jit {
    1.21 +
    1.22 +class BailoutStack
    1.23 +{
    1.24 +    mozilla::Array<double, FloatRegisters::Total> fpregs_;
    1.25 +    mozilla::Array<uintptr_t, Registers::Total> regs_;
    1.26 +    uintptr_t frameSize_;
    1.27 +    uintptr_t snapshotOffset_;
    1.28 +
    1.29 +  public:
    1.30 +    MachineState machineState() {
    1.31 +        return MachineState::FromBailout(regs_, fpregs_);
    1.32 +    }
    1.33 +    uint32_t snapshotOffset() const {
    1.34 +        return snapshotOffset_;
    1.35 +    }
    1.36 +    uint32_t frameSize() const {
    1.37 +        return frameSize_;
    1.38 +    }
    1.39 +    uint8_t *parentStackPointer() {
    1.40 +        return (uint8_t *)this + sizeof(BailoutStack);
    1.41 +    }
    1.42 +};
    1.43 +
    1.44 +} // namespace jit
    1.45 +} // namespace js
    1.46 +
    1.47 +#if defined(_WIN32)
    1.48 +# pragma pack(pop)
    1.49 +#endif
    1.50 +
    1.51 +IonBailoutIterator::IonBailoutIterator(const JitActivationIterator &activations,
    1.52 +                                       BailoutStack *bailout)
    1.53 +  : JitFrameIterator(activations),
    1.54 +    machine_(bailout->machineState())
    1.55 +{
    1.56 +    uint8_t *sp = bailout->parentStackPointer();
    1.57 +    uint8_t *fp = sp + bailout->frameSize();
    1.58 +
    1.59 +    current_ = fp;
    1.60 +    type_ = JitFrame_IonJS;
    1.61 +    topFrameSize_ = current_ - sp;
    1.62 +    topIonScript_ = script()->ionScript();
    1.63 +    snapshotOffset_ = bailout->snapshotOffset();
    1.64 +}
    1.65 +
    1.66 +IonBailoutIterator::IonBailoutIterator(const JitActivationIterator &activations,
    1.67 +                                       InvalidationBailoutStack *bailout)
    1.68 +  : JitFrameIterator(activations),
    1.69 +    machine_(bailout->machine())
    1.70 +{
    1.71 +    returnAddressToFp_ = bailout->osiPointReturnAddress();
    1.72 +    topIonScript_ = bailout->ionScript();
    1.73 +    const OsiIndex *osiIndex = topIonScript_->getOsiIndex(returnAddressToFp_);
    1.74 +
    1.75 +    current_ = (uint8_t*) bailout->fp();
    1.76 +    type_ = JitFrame_IonJS;
    1.77 +    topFrameSize_ = current_ - bailout->sp();
    1.78 +    snapshotOffset_ = osiIndex->snapshotOffset();
    1.79 +}