static inline bool UncachedInlineCall(VMFrame &f, InitialFrameFlags initial, void **pret, bool *unjittable, uint32_t argc) { AssertCanGC(); JSContext *cx = f.cx; CallArgs args = CallArgsFromSp(argc, f.regs.sp); RootedFunction newfun(cx, args.callee().toFunction()); RootedScript newscript(cx, newfun->getOrCreateScript(cx)); if (!newscript) return false; bool construct = InitialFrameFlagsAreConstructing(initial); RootedScript fscript(cx, f.script()); bool newType = construct && cx->typeInferenceEnabled() && types::UseNewType(cx, fscript, f.pc()); if (!types::TypeMonitorCall(cx, args, construct)) return false; /* Try to compile if not already compiled. */ if (ShouldJaegerCompileCallee(cx, f.script(), newscript, f.jit())) { CompileStatus status = CanMethodJIT(cx, newscript, newscript->code, construct, CompileRequest_JIT, f.fp()); if (status == Compile_Error) { /* A runtime exception was thrown, get out. */ return false; } if (status == Compile_Abort) *unjittable = true; } /* * Make sure we are not calling from an inline frame if we need to make a * call object for the callee, as doing so could trigger GC and cause * jitcode discarding / frame expansion. */ if (f.regs.inlined() && newfun->isHeavyweight()) { ExpandInlineFrames(cx->compartment); JS_ASSERT(!f.regs.inlined()); } /* * Preserve f.regs.fp while pushing the new frame, for the invariant that * f.regs reflects the state when we entered the stub call. This handoff is * tricky: we need to make sure that f.regs is not updated to the new * frame, and we also need to ensure that cx->regs still points to f.regs * when space is reserved, in case doing so throws an exception. */ FrameRegs regs = f.regs; /* Get pointer to new frame/slots, prepare arguments. */ if (!cx->stack.pushInlineFrame(cx, regs, args, *newfun, newscript, initial, &f.stackLimit)) return false; /* Finish the handoff to the new frame regs. */ PreserveRegsGuard regsGuard(cx, regs); /* * If newscript was successfully compiled, run it. Skip for calls which * will be constructing a new type object for 'this'. */ if (!newType) { if (JITScript *jit = newscript->getJIT(regs.fp()->isConstructing(), cx->compartment->compileBarriers())) { if (jit->invokeEntry) { *pret = jit->invokeEntry; /* Restore the old fp around and let the JIT code repush the new fp. */ regs.popFrame((Value *) regs.fp()); return true; } } } /* * Otherwise, run newscript in the interpreter. Expand any inlined frame we * are calling from, as the new frame is not associated with the VMFrame * and will not have its prevpc info updated if frame expansion is * triggered while interpreting. */ if (f.regs.inlined()) { ExpandInlineFrames(cx->compartment); JS_ASSERT(!f.regs.inlined()); regs.fp()->resetInlinePrev(f.fp(), f.regs.pc); } JS_CHECK_RECURSION(cx, return false); RootedScript script(cx, newscript); bool ok = RunScript(cx, script, cx->fp()); f.cx->stack.popInlineFrame(regs); if (ok) { RootedScript fscript(cx, f.script()); types::TypeScript::Monitor(f.cx, fscript, f.pc(), args.rval()); } *pret = NULL; return ok; }