michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "jit/Bailouts.h"
michael@0: 
michael@0: using namespace js;
michael@0: using namespace js::jit;
michael@0: 
michael@0: #if defined(_WIN32)
michael@0: # pragma pack(push, 1)
michael@0: #endif
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: class BailoutStack
michael@0: {
michael@0:     mozilla::Array<double, FloatRegisters::Total> fpregs_;
michael@0:     mozilla::Array<uintptr_t, Registers::Total> regs_;
michael@0:     uintptr_t frameSize_;
michael@0:     uintptr_t snapshotOffset_;
michael@0: 
michael@0:   public:
michael@0:     MachineState machineState() {
michael@0:         return MachineState::FromBailout(regs_, fpregs_);
michael@0:     }
michael@0:     uint32_t snapshotOffset() const {
michael@0:         return snapshotOffset_;
michael@0:     }
michael@0:     uint32_t frameSize() const {
michael@0:         return frameSize_;
michael@0:     }
michael@0:     uint8_t *parentStackPointer() {
michael@0:         return (uint8_t *)this + sizeof(BailoutStack);
michael@0:     }
michael@0: };
michael@0: 
michael@0: } // namespace jit
michael@0: } // namespace js
michael@0: 
michael@0: #if defined(_WIN32)
michael@0: # pragma pack(pop)
michael@0: #endif
michael@0: 
michael@0: IonBailoutIterator::IonBailoutIterator(const JitActivationIterator &activations,
michael@0:                                        BailoutStack *bailout)
michael@0:   : JitFrameIterator(activations),
michael@0:     machine_(bailout->machineState())
michael@0: {
michael@0:     uint8_t *sp = bailout->parentStackPointer();
michael@0:     uint8_t *fp = sp + bailout->frameSize();
michael@0: 
michael@0:     current_ = fp;
michael@0:     type_ = JitFrame_IonJS;
michael@0:     topFrameSize_ = current_ - sp;
michael@0:     topIonScript_ = script()->ionScript();
michael@0:     snapshotOffset_ = bailout->snapshotOffset();
michael@0: }
michael@0: 
michael@0: IonBailoutIterator::IonBailoutIterator(const JitActivationIterator &activations,
michael@0:                                        InvalidationBailoutStack *bailout)
michael@0:   : JitFrameIterator(activations),
michael@0:     machine_(bailout->machine())
michael@0: {
michael@0:     returnAddressToFp_ = bailout->osiPointReturnAddress();
michael@0:     topIonScript_ = bailout->ionScript();
michael@0:     const OsiIndex *osiIndex = topIonScript_->getOsiIndex(returnAddressToFp_);
michael@0: 
michael@0:     current_ = (uint8_t*) bailout->fp();
michael@0:     type_ = JitFrame_IonJS;
michael@0:     topFrameSize_ = current_ - bailout->sp();
michael@0:     snapshotOffset_ = osiIndex->snapshotOffset();
michael@0: }