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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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_BASE_MACROS_H_ | 5 #ifndef V8_BASE_MACROS_H_ |
| 6 #define V8_BASE_MACROS_H_ | 6 #define V8_BASE_MACROS_H_ |
| 7 | 7 |
| 8 #include <stddef.h> | |
| 9 #include <stdint.h> | |
| 10 | |
| 11 #include <cstring> | |
| 12 | |
| 13 #include "src/base/build_config.h" | |
| 14 #include "src/base/compiler-specific.h" | 8 #include "src/base/compiler-specific.h" |
| 9 #include "src/base/format-macros.h" |
| 15 #include "src/base/logging.h" | 10 #include "src/base/logging.h" |
| 16 | 11 |
| 17 | 12 |
| 18 // TODO(all) Replace all uses of this macro with C++'s offsetof. To do that, we | 13 // TODO(all) Replace all uses of this macro with C++'s offsetof. To do that, we |
| 19 // have to make sure that only standard-layout types and simple field | 14 // have to make sure that only standard-layout types and simple field |
| 20 // designators are used. | 15 // designators are used. |
| 21 #define OFFSET_OF(type, field) \ | 16 #define OFFSET_OF(type, field) \ |
| 22 (reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(16)->field)) - 16) | 17 (reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(16)->field)) - 16) |
| 23 | 18 |
| 24 | 19 |
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| 271 #endif | 266 #endif |
| 272 | 267 |
| 273 #define V8PRIxPTR V8_PTR_PREFIX "x" | 268 #define V8PRIxPTR V8_PTR_PREFIX "x" |
| 274 #define V8PRIdPTR V8_PTR_PREFIX "d" | 269 #define V8PRIdPTR V8_PTR_PREFIX "d" |
| 275 #define V8PRIuPTR V8_PTR_PREFIX "u" | 270 #define V8PRIuPTR V8_PTR_PREFIX "u" |
| 276 | 271 |
| 277 // Fix for Mac OS X defining uintptr_t as "unsigned long": | 272 // Fix for Mac OS X defining uintptr_t as "unsigned long": |
| 278 #if V8_OS_MACOSX | 273 #if V8_OS_MACOSX |
| 279 #undef V8PRIxPTR | 274 #undef V8PRIxPTR |
| 280 #define V8PRIxPTR "lx" | 275 #define V8PRIxPTR "lx" |
| 276 #undef V8PRIdPTR |
| 277 #define V8PRIdPTR "ld" |
| 281 #undef V8PRIuPTR | 278 #undef V8PRIuPTR |
| 282 #define V8PRIuPTR "lxu" | 279 #define V8PRIuPTR "lxu" |
| 283 #endif | 280 #endif |
| 284 | 281 |
| 285 // GCC on S390 31-bit expands 'size_t' to 'long unsigned int' | |
| 286 // instead of 'int', resulting in compilation errors with %d. | |
| 287 // The printf format specifier needs to be %zd instead. | |
| 288 #if V8_HOST_ARCH_S390 && !V8_HOST_ARCH_64_BIT | |
| 289 #define V8_SIZET_PREFIX "z" | |
| 290 #else | |
| 291 #define V8_SIZET_PREFIX "" | |
| 292 #endif | |
| 293 | |
| 294 // The following macro works on both 32 and 64-bit platforms. | 282 // The following macro works on both 32 and 64-bit platforms. |
| 295 // Usage: instead of writing 0x1234567890123456 | 283 // Usage: instead of writing 0x1234567890123456 |
| 296 // write V8_2PART_UINT64_C(0x12345678,90123456); | 284 // write V8_2PART_UINT64_C(0x12345678,90123456); |
| 297 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) | 285 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) |
| 298 | 286 |
| 299 | 287 |
| 300 // Compute the 0-relative offset of some absolute value x of type T. | 288 // Compute the 0-relative offset of some absolute value x of type T. |
| 301 // This allows conversion of Addresses and integral types into | 289 // This allows conversion of Addresses and integral types into |
| 302 // 0-relative int offsets. | 290 // 0-relative int offsets. |
| 303 template <typename T> | 291 template <typename T> |
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| 342 | 330 |
| 343 template <> | 331 template <> |
| 344 inline bool is_fundamental<uint8_t>() { | 332 inline bool is_fundamental<uint8_t>() { |
| 345 return true; | 333 return true; |
| 346 } | 334 } |
| 347 | 335 |
| 348 } // namespace base | 336 } // namespace base |
| 349 } // namespace v8 | 337 } // namespace v8 |
| 350 | 338 |
| 351 #endif // V8_BASE_MACROS_H_ | 339 #endif // V8_BASE_MACROS_H_ |
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