1// Copyright 2012 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef V8_X64_SIMULATOR_X64_H_ 6#define V8_X64_SIMULATOR_X64_H_ 7 8#include "src/allocation.h" 9 10namespace v8 { 11namespace internal { 12 13// Since there is no simulator for the x64 architecture the only thing we can 14// do is to call the entry directly. 15// TODO(X64): Don't pass p0, since it isn't used? 16#define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \ 17 (entry(p0, p1, p2, p3, p4)) 18 19typedef int (*regexp_matcher)(String*, int, const byte*, 20 const byte*, int*, int, Address, int, Isolate*); 21 22// Call the generated regexp code directly. The code at the entry address should 23// expect eight int/pointer sized arguments and return an int. 24#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7, p8) \ 25 (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7, p8)) 26 27// The stack limit beyond which we will throw stack overflow errors in 28// generated code. Because generated code on x64 uses the C stack, we 29// just use the C stack limit. 30class SimulatorStack : public v8::internal::AllStatic { 31 public: 32 static inline uintptr_t JsLimitFromCLimit(Isolate* isolate, 33 uintptr_t c_limit) { 34 return c_limit; 35 } 36 37 static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) { 38 return try_catch_address; 39 } 40 41 static inline void UnregisterCTryCatch() { } 42}; 43 44} } // namespace v8::internal 45 46#endif // V8_X64_SIMULATOR_X64_H_ 47