| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| * vim: set ts=8 sts=4 et sw=4 tw=99: |
| * This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| #include "jit/Bailouts.h" |
| |
| using namespace js; |
| using namespace js::jit; |
| |
| namespace js { |
| namespace jit { |
| |
| class BailoutStack |
| { |
| RegisterDump::FPUArray fpregs_; |
| RegisterDump::GPRArray regs_; |
| uintptr_t frameSize_; |
| uintptr_t snapshotOffset_; |
| |
| public: |
| MachineState machineState() { |
| return MachineState::FromBailout(regs_, fpregs_); |
| } |
| uint32_t snapshotOffset() const { |
| return snapshotOffset_; |
| } |
| uint32_t frameSize() const { |
| return frameSize_; |
| } |
| uint8_t* parentStackPointer() { |
| return (uint8_t*)this + sizeof(BailoutStack); |
| } |
| }; |
| |
| } // namespace jit |
| } // namespace js |
| |
| BailoutFrameInfo::BailoutFrameInfo(const JitActivationIterator& activations, |
| BailoutStack* bailout) |
| : machine_(bailout->machineState()) |
| { |
| uint8_t* sp = bailout->parentStackPointer(); |
| framePointer_ = sp + bailout->frameSize(); |
| topFrameSize_ = framePointer_ - sp; |
| |
| JSScript* script = ScriptFromCalleeToken(((JitFrameLayout*) framePointer_)->calleeToken()); |
| topIonScript_ = script->ionScript(); |
| |
| attachOnJitActivation(activations); |
| snapshotOffset_ = bailout->snapshotOffset(); |
| } |
| |
| BailoutFrameInfo::BailoutFrameInfo(const JitActivationIterator& activations, |
| InvalidationBailoutStack* bailout) |
| : machine_(bailout->machine()) |
| { |
| framePointer_ = (uint8_t*) bailout->fp(); |
| topFrameSize_ = framePointer_ - bailout->sp(); |
| topIonScript_ = bailout->ionScript(); |
| attachOnJitActivation(activations); |
| |
| uint8_t* returnAddressToFp_ = bailout->osiPointReturnAddress(); |
| const OsiIndex* osiIndex = topIonScript_->getOsiIndex(returnAddressToFp_); |
| snapshotOffset_ = osiIndex->snapshotOffset(); |
| } |