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      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_IA32_SIMULATOR_IA32_H_
      6 #define V8_IA32_SIMULATOR_IA32_H_
      7 
      8 #include "src/allocation.h"
      9 
     10 namespace v8 {
     11 namespace internal {
     12 
     13 // Since there is no simulator for the ia32 architecture the only thing we can
     14 // do is to call the entry directly.
     15 #define CALL_GENERATED_CODE(isolate, entry, p0, p1, p2, p3, p4) \
     16   (entry(p0, p1, p2, p3, p4))
     17 
     18 
     19 typedef 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(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \
     25                                    p7, p8)                                     \
     26   (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7, p8))
     27 
     28 
     29 // The stack limit beyond which we will throw stack overflow errors in
     30 // generated code. Because generated code on ia32 uses the C stack, we
     31 // just use the C stack limit.
     32 class SimulatorStack : public v8::internal::AllStatic {
     33  public:
     34   static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
     35                                             uintptr_t c_limit) {
     36     USE(isolate);
     37     return c_limit;
     38   }
     39 
     40   static inline uintptr_t RegisterCTryCatch(v8::internal::Isolate* isolate,
     41                                             uintptr_t try_catch_address) {
     42     USE(isolate);
     43     return try_catch_address;
     44   }
     45 
     46   static inline void UnregisterCTryCatch(v8::internal::Isolate* isolate) {
     47     USE(isolate);
     48   }
     49 };
     50 
     51 }  // namespace internal
     52 }  // namespace v8
     53 
     54 #endif  // V8_IA32_SIMULATOR_IA32_H_
     55