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_AsmJSLink_h
michael@0: #define jit_AsmJSLink_h
michael@0: 
michael@0: #include "NamespaceImports.h"
michael@0: 
michael@0: class JSAtom;
michael@0: 
michael@0: namespace js {
michael@0: 
michael@0: class AsmJSActivation;
michael@0: class AsmJSModule;
michael@0: namespace jit { class CallSite; }
michael@0: 
michael@0: // Iterates over the frames of a single AsmJSActivation.
michael@0: class AsmJSFrameIterator
michael@0: {
michael@0:     const AsmJSModule *module_;
michael@0:     const jit::CallSite *callsite_;
michael@0:     uint8_t *sp_;
michael@0:     uint8_t *returnAddress_;
michael@0: 
michael@0:     void popFrame();
michael@0:     void settle();
michael@0: 
michael@0:   public:
michael@0:     AsmJSFrameIterator(const AsmJSActivation *activation);
michael@0:     void operator++() { popFrame(); settle(); }
michael@0:     bool done() const { return !callsite_; }
michael@0:     JSAtom *functionDisplayAtom() const;
michael@0:     unsigned computeLine(uint32_t *column) const;
michael@0: };
michael@0: 
michael@0: #ifdef JS_ION
michael@0: 
michael@0: // Create a new JSFunction to replace originalFun as the representation of the
michael@0: // function defining the succesfully-validated module 'moduleObj'.
michael@0: extern JSFunction *
michael@0: NewAsmJSModuleFunction(ExclusiveContext *cx, JSFunction *originalFun, HandleObject moduleObj);
michael@0: 
michael@0: // Return whether this is the js::Native returned by NewAsmJSModuleFunction.
michael@0: extern bool
michael@0: IsAsmJSModuleNative(JSNative native);
michael@0: 
michael@0: // Return whether the given value is a function containing "use asm" that has
michael@0: // been validated according to the asm.js spec.
michael@0: extern bool
michael@0: IsAsmJSModule(JSContext *cx, unsigned argc, JS::Value *vp);
michael@0: extern bool
michael@0: IsAsmJSModule(HandleFunction fun);
michael@0: 
michael@0: extern JSString*
michael@0: AsmJSModuleToString(JSContext *cx, HandleFunction fun, bool addParenToLambda);
michael@0: 
michael@0: // Return whether the given value is a function containing "use asm" that was
michael@0: // loaded directly from the cache (and hence was validated previously).
michael@0: extern bool
michael@0: IsAsmJSModuleLoadedFromCache(JSContext *cx, unsigned argc, Value *vp);
michael@0: 
michael@0: // Return whether the given value is a nested function in an asm.js module that
michael@0: // has been both compile- and link-time validated.
michael@0: extern bool
michael@0: IsAsmJSFunction(JSContext *cx, unsigned argc, JS::Value *vp);
michael@0: extern bool
michael@0: IsAsmJSFunction(HandleFunction fun);
michael@0: 
michael@0: extern JSString *
michael@0: AsmJSFunctionToString(JSContext *cx, HandleFunction fun);
michael@0: 
michael@0: #else // JS_ION
michael@0: 
michael@0: inline bool
michael@0: IsAsmJSModuleNative(JSNative native)
michael@0: {
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: inline bool
michael@0: IsAsmJSFunction(JSContext *cx, unsigned argc, Value *vp)
michael@0: {
michael@0:     CallArgs args = CallArgsFromVp(argc, vp);
michael@0:     args.rval().set(BooleanValue(false));
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: inline bool
michael@0: IsAsmJSFunction(HandleFunction fun)
michael@0: {
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: inline JSString *
michael@0: AsmJSFunctionToString(JSContext *cx, HandleFunction fun)
michael@0: {
michael@0:     return nullptr;
michael@0: }
michael@0: 
michael@0: inline bool
michael@0: IsAsmJSModule(JSContext *cx, unsigned argc, Value *vp)
michael@0: {
michael@0:     CallArgs args = CallArgsFromVp(argc, vp);
michael@0:     args.rval().set(BooleanValue(false));
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: inline bool
michael@0: IsAsmJSModule(HandleFunction fun)
michael@0: {
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: inline JSString*
michael@0: AsmJSModuleToString(JSContext *cx, HandleFunction fun, bool addParenToLambda)
michael@0: {
michael@0:     return nullptr;
michael@0: }
michael@0: 
michael@0: inline bool
michael@0: IsAsmJSModuleLoadedFromCache(JSContext *cx, unsigned argc, Value *vp)
michael@0: {
michael@0:     CallArgs args = CallArgsFromVp(argc, vp);
michael@0:     args.rval().set(BooleanValue(false));
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: #endif // JS_ION
michael@0: 
michael@0: } // namespace js
michael@0: 
michael@0: #endif // jit_AsmJS_h