1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit/AsmJSLink.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,135 @@
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_AsmJSLink_h
1.11 +#define jit_AsmJSLink_h
1.12 +
1.13 +#include "NamespaceImports.h"
1.14 +
1.15 +class JSAtom;
1.16 +
1.17 +namespace js {
1.18 +
1.19 +class AsmJSActivation;
1.20 +class AsmJSModule;
1.21 +namespace jit { class CallSite; }
1.22 +
1.23 +// Iterates over the frames of a single AsmJSActivation.
1.24 +class AsmJSFrameIterator
1.25 +{
1.26 + const AsmJSModule *module_;
1.27 + const jit::CallSite *callsite_;
1.28 + uint8_t *sp_;
1.29 + uint8_t *returnAddress_;
1.30 +
1.31 + void popFrame();
1.32 + void settle();
1.33 +
1.34 + public:
1.35 + AsmJSFrameIterator(const AsmJSActivation *activation);
1.36 + void operator++() { popFrame(); settle(); }
1.37 + bool done() const { return !callsite_; }
1.38 + JSAtom *functionDisplayAtom() const;
1.39 + unsigned computeLine(uint32_t *column) const;
1.40 +};
1.41 +
1.42 +#ifdef JS_ION
1.43 +
1.44 +// Create a new JSFunction to replace originalFun as the representation of the
1.45 +// function defining the succesfully-validated module 'moduleObj'.
1.46 +extern JSFunction *
1.47 +NewAsmJSModuleFunction(ExclusiveContext *cx, JSFunction *originalFun, HandleObject moduleObj);
1.48 +
1.49 +// Return whether this is the js::Native returned by NewAsmJSModuleFunction.
1.50 +extern bool
1.51 +IsAsmJSModuleNative(JSNative native);
1.52 +
1.53 +// Return whether the given value is a function containing "use asm" that has
1.54 +// been validated according to the asm.js spec.
1.55 +extern bool
1.56 +IsAsmJSModule(JSContext *cx, unsigned argc, JS::Value *vp);
1.57 +extern bool
1.58 +IsAsmJSModule(HandleFunction fun);
1.59 +
1.60 +extern JSString*
1.61 +AsmJSModuleToString(JSContext *cx, HandleFunction fun, bool addParenToLambda);
1.62 +
1.63 +// Return whether the given value is a function containing "use asm" that was
1.64 +// loaded directly from the cache (and hence was validated previously).
1.65 +extern bool
1.66 +IsAsmJSModuleLoadedFromCache(JSContext *cx, unsigned argc, Value *vp);
1.67 +
1.68 +// Return whether the given value is a nested function in an asm.js module that
1.69 +// has been both compile- and link-time validated.
1.70 +extern bool
1.71 +IsAsmJSFunction(JSContext *cx, unsigned argc, JS::Value *vp);
1.72 +extern bool
1.73 +IsAsmJSFunction(HandleFunction fun);
1.74 +
1.75 +extern JSString *
1.76 +AsmJSFunctionToString(JSContext *cx, HandleFunction fun);
1.77 +
1.78 +#else // JS_ION
1.79 +
1.80 +inline bool
1.81 +IsAsmJSModuleNative(JSNative native)
1.82 +{
1.83 + return false;
1.84 +}
1.85 +
1.86 +inline bool
1.87 +IsAsmJSFunction(JSContext *cx, unsigned argc, Value *vp)
1.88 +{
1.89 + CallArgs args = CallArgsFromVp(argc, vp);
1.90 + args.rval().set(BooleanValue(false));
1.91 + return true;
1.92 +}
1.93 +
1.94 +inline bool
1.95 +IsAsmJSFunction(HandleFunction fun)
1.96 +{
1.97 + return false;
1.98 +}
1.99 +
1.100 +inline JSString *
1.101 +AsmJSFunctionToString(JSContext *cx, HandleFunction fun)
1.102 +{
1.103 + return nullptr;
1.104 +}
1.105 +
1.106 +inline bool
1.107 +IsAsmJSModule(JSContext *cx, unsigned argc, Value *vp)
1.108 +{
1.109 + CallArgs args = CallArgsFromVp(argc, vp);
1.110 + args.rval().set(BooleanValue(false));
1.111 + return true;
1.112 +}
1.113 +
1.114 +inline bool
1.115 +IsAsmJSModule(HandleFunction fun)
1.116 +{
1.117 + return false;
1.118 +}
1.119 +
1.120 +inline JSString*
1.121 +AsmJSModuleToString(JSContext *cx, HandleFunction fun, bool addParenToLambda)
1.122 +{
1.123 + return nullptr;
1.124 +}
1.125 +
1.126 +inline bool
1.127 +IsAsmJSModuleLoadedFromCache(JSContext *cx, unsigned argc, Value *vp)
1.128 +{
1.129 + CallArgs args = CallArgsFromVp(argc, vp);
1.130 + args.rval().set(BooleanValue(false));
1.131 + return true;
1.132 +}
1.133 +
1.134 +#endif // JS_ION
1.135 +
1.136 +} // namespace js
1.137 +
1.138 +#endif // jit_AsmJS_h
