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1 // Copyright 2012 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_GLOBALS_H_ | 5 #ifndef V8_GLOBALS_H_ |
6 #define V8_GLOBALS_H_ | 6 #define V8_GLOBALS_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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210 | 210 |
211 | 211 |
212 // FUNCTION_CAST<F>(addr) casts an address into a function | 212 // FUNCTION_CAST<F>(addr) casts an address into a function |
213 // of type F. Used to invoke generated code from within C. | 213 // of type F. Used to invoke generated code from within C. |
214 template <typename F> | 214 template <typename F> |
215 F FUNCTION_CAST(Address addr) { | 215 F FUNCTION_CAST(Address addr) { |
216 return reinterpret_cast<F>(reinterpret_cast<intptr_t>(addr)); | 216 return reinterpret_cast<F>(reinterpret_cast<intptr_t>(addr)); |
217 } | 217 } |
218 | 218 |
219 | 219 |
| 220 // Determine whether the architecture uses function descriptors |
| 221 // which provide a level of indirection between the function pointer |
| 222 // and the function entrypoint. |
| 223 #if V8_HOST_ARCH_PPC && \ |
| 224 (V8_OS_AIX || (V8_TARGET_ARCH_PPC64 && V8_TARGET_BIG_ENDIAN)) |
| 225 #define USES_FUNCTION_DESCRIPTORS 1 |
| 226 #define FUNCTION_ENTRYPOINT_ADDRESS(f) \ |
| 227 (reinterpret_cast<v8::internal::Address*>( \ |
| 228 &(reinterpret_cast<intptr_t*>(f)[0]))) |
| 229 #else |
| 230 #define USES_FUNCTION_DESCRIPTORS 0 |
| 231 #endif |
| 232 |
| 233 |
220 // ----------------------------------------------------------------------------- | 234 // ----------------------------------------------------------------------------- |
221 // Forward declarations for frequently used classes | 235 // Forward declarations for frequently used classes |
222 // (sorted alphabetically) | 236 // (sorted alphabetically) |
223 | 237 |
224 class FreeStoreAllocationPolicy; | 238 class FreeStoreAllocationPolicy; |
225 template <typename T, class P = FreeStoreAllocationPolicy> class List; | 239 template <typename T, class P = FreeStoreAllocationPolicy> class List; |
226 | 240 |
227 // ----------------------------------------------------------------------------- | 241 // ----------------------------------------------------------------------------- |
228 // Declarations for use in both the preparser and the rest of V8. | 242 // Declarations for use in both the preparser and the rest of V8. |
229 | 243 |
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1019 kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral); | 1033 kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral); |
1020 DCHECK(IsValidFunctionKind(kind)); | 1034 DCHECK(IsValidFunctionKind(kind)); |
1021 return kind; | 1035 return kind; |
1022 } | 1036 } |
1023 } // namespace internal | 1037 } // namespace internal |
1024 } // namespace v8 | 1038 } // namespace v8 |
1025 | 1039 |
1026 namespace i = v8::internal; | 1040 namespace i = v8::internal; |
1027 | 1041 |
1028 #endif // V8_GLOBALS_H_ | 1042 #endif // V8_GLOBALS_H_ |
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