1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit/Recover.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,71 @@
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 +#ifndef jit_Recover_h
1.11 +#define jit_Recover_h
1.12 +
1.13 +#include "mozilla/Attributes.h"
1.14 +
1.15 +#include "jit/Snapshots.h"
1.16 +
1.17 +namespace js {
1.18 +namespace jit {
1.19 +
1.20 +class RResumePoint;
1.21 +
1.22 +class RInstruction
1.23 +{
1.24 + public:
1.25 + enum Opcode
1.26 + {
1.27 + Recover_ResumePoint = 0
1.28 + };
1.29 +
1.30 + virtual Opcode opcode() const = 0;
1.31 +
1.32 + bool isResumePoint() const {
1.33 + return opcode() == Recover_ResumePoint;
1.34 + }
1.35 + inline const RResumePoint *toResumePoint() const;
1.36 +
1.37 + virtual uint32_t numOperands() const = 0;
1.38 +
1.39 + static void readRecoverData(CompactBufferReader &reader, RInstructionStorage *raw);
1.40 +};
1.41 +
1.42 +class RResumePoint MOZ_FINAL : public RInstruction
1.43 +{
1.44 + private:
1.45 + uint32_t pcOffset_; // Offset from script->code.
1.46 + uint32_t numOperands_; // Number of slots.
1.47 +
1.48 + friend class RInstruction;
1.49 + RResumePoint(CompactBufferReader &reader);
1.50 +
1.51 + public:
1.52 + virtual Opcode opcode() const {
1.53 + return Recover_ResumePoint;
1.54 + }
1.55 +
1.56 + uint32_t pcOffset() const {
1.57 + return pcOffset_;
1.58 + }
1.59 + virtual uint32_t numOperands() const {
1.60 + return numOperands_;
1.61 + }
1.62 +};
1.63 +
1.64 +const RResumePoint *
1.65 +RInstruction::toResumePoint() const
1.66 +{
1.67 + MOZ_ASSERT(isResumePoint());
1.68 + return static_cast<const RResumePoint *>(this);
1.69 +}
1.70 +
1.71 +}
1.72 +}
1.73 +
1.74 +#endif /* jit_Recover_h */
