/* * Copyright (C) 2015 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef B3PatchpointSpecial_h #define B3PatchpointSpecial_h #if ENABLE(B3_JIT) #include "B3StackmapSpecial.h" namespace JSC { namespace B3 { // This is a special that recognizes that there are two uses of Patchpoint: Void and and non-Void. // In the Void case, the syntax of the Air Patch instruction is: // // Patch &patchpoint, args... // // Where "args..." are the lowered arguments to the Patchpoint instruction. In the non-Void case // we will have: // // Patch &patchpoint, result, args... class PatchpointSpecial : public StackmapSpecial { public: PatchpointSpecial(); virtual ~PatchpointSpecial(); protected: void forEachArg(Air::Inst&, const ScopedLambda<Air::Inst::EachArgCallback>&) override; bool isValid(Air::Inst&) override; bool admitsStack(Air::Inst&, unsigned argIndex) override; // NOTE: the generate method will generate the hidden branch and then register a LatePath that // generates the stackmap. Super crazy dude! CCallHelpers::Jump generate(Air::Inst&, CCallHelpers&, Air::GenerationContext&) override; void dumpImpl(PrintStream&) const override; void deepDumpImpl(PrintStream&) const override; }; } } // namespace JSC::B3 #endif // ENABLE(B3_JIT) #endif // B3PatchpointSpecial_h