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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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267 #define V8_PTR_PREFIX "l" | 262 #define V8_PTR_PREFIX "l" |
268 #else | 263 #else |
269 # define V8_PTR_PREFIX "" | 264 # define V8_PTR_PREFIX "" |
270 #endif | 265 #endif |
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 |
| 272 // ptrdiff_t is 't' according to the standard, but MSVC uses 'I'. |
| 273 #if V8_CC_MSVC |
| 274 #define V8PRIxPTRDIFF "Ix" |
| 275 #define V8PRIdPTRDIFF "Id" |
| 276 #define V8PRIuPTRDIFF "Iu" |
| 277 #else |
| 278 #define V8PRIxPTRDIFF "tx" |
| 279 #define V8PRIdPTRDIFF "td" |
| 280 #define V8PRIuPTRDIFF "tu" |
| 281 #endif |
| 282 |
277 // Fix for Mac OS X defining uintptr_t as "unsigned long": | 283 // Fix for Mac OS X defining uintptr_t as "unsigned long": |
278 #if V8_OS_MACOSX | 284 #if V8_OS_MACOSX |
279 #undef V8PRIxPTR | 285 #undef V8PRIxPTR |
280 #define V8PRIxPTR "lx" | 286 #define V8PRIxPTR "lx" |
| 287 #undef V8PRIdPTR |
| 288 #define V8PRIdPTR "ld" |
281 #undef V8PRIuPTR | 289 #undef V8PRIuPTR |
282 #define V8PRIuPTR "lxu" | 290 #define V8PRIuPTR "lxu" |
283 #endif | 291 #endif |
284 | 292 |
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. | 293 // The following macro works on both 32 and 64-bit platforms. |
295 // Usage: instead of writing 0x1234567890123456 | 294 // Usage: instead of writing 0x1234567890123456 |
296 // write V8_2PART_UINT64_C(0x12345678,90123456); | 295 // write V8_2PART_UINT64_C(0x12345678,90123456); |
297 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) | 296 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) |
298 | 297 |
299 | 298 |
300 // Compute the 0-relative offset of some absolute value x of type T. | 299 // Compute the 0-relative offset of some absolute value x of type T. |
301 // This allows conversion of Addresses and integral types into | 300 // This allows conversion of Addresses and integral types into |
302 // 0-relative int offsets. | 301 // 0-relative int offsets. |
303 template <typename T> | 302 template <typename T> |
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342 | 341 |
343 template <> | 342 template <> |
344 inline bool is_fundamental<uint8_t>() { | 343 inline bool is_fundamental<uint8_t>() { |
345 return true; | 344 return true; |
346 } | 345 } |
347 | 346 |
348 } // namespace base | 347 } // namespace base |
349 } // namespace v8 | 348 } // namespace v8 |
350 | 349 |
351 #endif // V8_BASE_MACROS_H_ | 350 #endif // V8_BASE_MACROS_H_ |
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