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: #ifndef jit_mips_Bailouts_mips_h
michael@0: #define jit_mips_Bailouts_mips_h
michael@0: 
michael@0: #include "jit/Bailouts.h"
michael@0: #include "jit/JitCompartment.h"
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: class BailoutStack
michael@0: {
michael@0:     uintptr_t frameClassId_;
michael@0:     // This is pushed in the bailout handler.  Both entry points into the
michael@0:     // handler inserts their own value int lr, which is then placed onto the
michael@0:     // stack along with frameClassId_ above.  This should be migrated to ip.
michael@0:   public:
michael@0:     union {
michael@0:         uintptr_t frameSize_;
michael@0:         uintptr_t tableOffset_;
michael@0:     };
michael@0: 
michael@0:   protected:
michael@0:     mozilla::Array<double, FloatRegisters::Total> fpregs_;
michael@0:     mozilla::Array<uintptr_t, Registers::Total> regs_;
michael@0: 
michael@0:     uintptr_t snapshotOffset_;
michael@0:     uintptr_t padding_;
michael@0: 
michael@0:   public:
michael@0:     FrameSizeClass frameClass() const {
michael@0:         return FrameSizeClass::FromClass(frameClassId_);
michael@0:     }
michael@0:     uintptr_t tableOffset() const {
michael@0:         MOZ_ASSERT(frameClass() != FrameSizeClass::None());
michael@0:         return tableOffset_;
michael@0:     }
michael@0:     uint32_t frameSize() const {
michael@0:         if (frameClass() == FrameSizeClass::None())
michael@0:             return frameSize_;
michael@0:         return frameClass().frameSize();
michael@0:     }
michael@0:     MachineState machine() {
michael@0:         return MachineState::FromBailout(regs_, fpregs_);
michael@0:     }
michael@0:     SnapshotOffset snapshotOffset() const {
michael@0:         MOZ_ASSERT(frameClass() == FrameSizeClass::None());
michael@0:         return snapshotOffset_;
michael@0:     }
michael@0:     uint8_t *parentStackPointer() const {
michael@0:         if (frameClass() == FrameSizeClass::None())
michael@0:             return (uint8_t *)this + sizeof(BailoutStack);
michael@0:         return (uint8_t *)this + offsetof(BailoutStack, snapshotOffset_);
michael@0:     }
michael@0:     static size_t offsetOfFrameClass() {
michael@0:         return offsetof(BailoutStack, frameClassId_);
michael@0:     }
michael@0:     static size_t offsetOfFrameSize() {
michael@0:         return offsetof(BailoutStack, frameSize_);
michael@0:     }
michael@0:     static size_t offsetOfFpRegs() {
michael@0:         return offsetof(BailoutStack, fpregs_);
michael@0:     }
michael@0:     static size_t offsetOfRegs() {
michael@0:         return offsetof(BailoutStack, regs_);
michael@0:     }
michael@0: };
michael@0: 
michael@0: } // namespace jit
michael@0: } // namespace js
michael@0: 
michael@0: #endif /* jit_mips_Bailouts_mips_h */