static bool
HandleDynamicLinkFailure(JSContext *cx, CallArgs args, AsmJSModule &module, HandlePropertyName name)
{
if (cx->isExceptionPending())
return false;
uint32_t begin = module.srcBodyStart(); // starts right after 'use asm'
uint32_t end = module.srcEndBeforeCurly();
Rooted<JSFlatString*> src(cx, module.scriptSource()->substringDontDeflate(cx, begin, end));
if (!src)
return false;
RootedFunction fun(cx, NewScriptedFunction(cx, 0, JSFunction::INTERPRETED,
name, JSFunction::FinalizeKind,
TenuredObject));
if (!fun)
return false;
AutoNameVector formals(cx);
if (!formals.reserve(3))
return false;
if (module.globalArgumentName())
formals.infallibleAppend(module.globalArgumentName());
if (module.importArgumentName())
formals.infallibleAppend(module.importArgumentName());
if (module.bufferArgumentName())
formals.infallibleAppend(module.bufferArgumentName());
CompileOptions options(cx);
options.setMutedErrors(module.scriptSource()->mutedErrors())
.setFile(module.scriptSource()->filename())
.setCompileAndGo(false)
.setNoScriptRval(false);
// The exported function inherits an implicit strict context if the module
// also inherited it somehow.
if (module.strict())
options.strictOption = true;
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, src))
return false;
const char16_t *chars = stableChars.twoByteRange().start().get();
SourceBufferHolder::Ownership ownership = stableChars.maybeGiveOwnershipToCaller()
? SourceBufferHolder::GiveOwnership
: SourceBufferHolder::NoOwnership;
SourceBufferHolder srcBuf(chars, end - begin, ownership);
if (!frontend::CompileFunctionBody(cx, &fun, options, formals, srcBuf,
/* enclosingScope = */ NullPtr()))
return false;
// Call the function we just recompiled.
args.setCallee(ObjectValue(*fun));
return Invoke(cx, args, args.isConstructing() ? CONSTRUCT : NO_CONSTRUCT);
}
static bool
HandleDynamicLinkFailure(JSContext *cx, CallArgs args, AsmJSModule &module, HandlePropertyName name)
{
if (cx->isExceptionPending())
return false;
uint32_t begin = module.offsetToEndOfUseAsm();
uint32_t end = module.funcEndBeforeCurly();
Rooted<JSFlatString*> src(cx, module.scriptSource()->substring(cx, begin, end));
if (!src)
return false;
RootedFunction fun(cx, NewFunction(cx, NullPtr(), nullptr, 0, JSFunction::INTERPRETED,
cx->global(), name, JSFunction::FinalizeKind,
TenuredObject));
if (!fun)
return false;
AutoNameVector formals(cx);
formals.reserve(3);
if (module.globalArgumentName())
formals.infallibleAppend(module.globalArgumentName());
if (module.importArgumentName())
formals.infallibleAppend(module.importArgumentName());
if (module.bufferArgumentName())
formals.infallibleAppend(module.bufferArgumentName());
CompileOptions options(cx);
options.setOriginPrincipals(module.scriptSource()->originPrincipals())
.setFile(module.scriptSource()->filename())
.setCompileAndGo(false)
.setNoScriptRval(false);
// The exported function inherits an implicit strict context if the module
// also inherited it somehow.
if (module.strict())
options.strictOption = true;
SourceBufferHolder srcBuf(src->chars(), end - begin, SourceBufferHolder::NoOwnership);
if (!frontend::CompileFunctionBody(cx, &fun, options, formals, srcBuf))
return false;
// Call the function we just recompiled.
args.setCallee(ObjectValue(*fun));
return Invoke(cx, args, args.isConstructing() ? CONSTRUCT : NO_CONSTRUCT);
}
static bool
HandleDynamicLinkFailure(JSContext* cx, const CallArgs& args, AsmJSModule& module,
HandlePropertyName name)
{
if (cx->isExceptionPending())
return false;
// Source discarding is allowed to affect JS semantics because it is never
// enabled for normal JS content.
bool haveSource = module.scriptSource()->hasSourceData();
if (!haveSource && !JSScript::loadSource(cx, module.scriptSource(), &haveSource))
return false;
if (!haveSource) {
JS_ReportError(cx, "asm.js link failure with source discarding enabled");
return false;
}
uint32_t begin = module.srcBodyStart(); // starts right after 'use asm'
uint32_t end = module.srcEndBeforeCurly();
Rooted<JSFlatString*> src(cx, module.scriptSource()->substringDontDeflate(cx, begin, end));
if (!src)
return false;
RootedFunction fun(cx, NewScriptedFunction(cx, 0, JSFunction::INTERPRETED_NORMAL,
name, gc::AllocKind::FUNCTION,
TenuredObject));
if (!fun)
return false;
Rooted<PropertyNameVector> formals(cx, PropertyNameVector(cx));
if (!formals.reserve(3))
return false;
if (module.globalArgumentName())
formals.infallibleAppend(module.globalArgumentName());
if (module.importArgumentName())
formals.infallibleAppend(module.importArgumentName());
if (module.bufferArgumentName())
formals.infallibleAppend(module.bufferArgumentName());
CompileOptions options(cx);
options.setMutedErrors(module.scriptSource()->mutedErrors())
.setFile(module.scriptSource()->filename())
.setNoScriptRval(false);
// The exported function inherits an implicit strict context if the module
// also inherited it somehow.
if (module.strict())
options.strictOption = true;
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, src))
return false;
const char16_t* chars = stableChars.twoByteRange().start().get();
SourceBufferHolder::Ownership ownership = stableChars.maybeGiveOwnershipToCaller()
? SourceBufferHolder::GiveOwnership
: SourceBufferHolder::NoOwnership;
SourceBufferHolder srcBuf(chars, end - begin, ownership);
if (!frontend::CompileFunctionBody(cx, &fun, options, formals, srcBuf,
/* enclosingScope = */ nullptr))
return false;
// Call the function we just recompiled.
args.setCallee(ObjectValue(*fun));
return Invoke(cx, args, args.isConstructing() ? CONSTRUCT : NO_CONSTRUCT);
}
