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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" |
8 #include "src/base/compiler-specific.h" | 14 #include "src/base/compiler-specific.h" |
9 #include "src/base/format-macros.h" | |
10 #include "src/base/logging.h" | 15 #include "src/base/logging.h" |
11 | 16 |
12 | 17 |
13 // TODO(all) Replace all uses of this macro with C++'s offsetof. To do that, we | 18 // TODO(all) Replace all uses of this macro with C++'s offsetof. To do that, we |
14 // have to make sure that only standard-layout types and simple field | 19 // have to make sure that only standard-layout types and simple field |
15 // designators are used. | 20 // designators are used. |
16 #define OFFSET_OF(type, field) \ | 21 #define OFFSET_OF(type, field) \ |
17 (reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(16)->field)) - 16) | 22 (reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(16)->field)) - 16) |
18 | 23 |
19 | 24 |
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262 #define V8_PTR_PREFIX "l" | 267 #define V8_PTR_PREFIX "l" |
263 #else | 268 #else |
264 # define V8_PTR_PREFIX "" | 269 # define V8_PTR_PREFIX "" |
265 #endif | 270 #endif |
266 #endif | 271 #endif |
267 | 272 |
268 #define V8PRIxPTR V8_PTR_PREFIX "x" | 273 #define V8PRIxPTR V8_PTR_PREFIX "x" |
269 #define V8PRIdPTR V8_PTR_PREFIX "d" | 274 #define V8PRIdPTR V8_PTR_PREFIX "d" |
270 #define V8PRIuPTR V8_PTR_PREFIX "u" | 275 #define V8PRIuPTR V8_PTR_PREFIX "u" |
271 | 276 |
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 | |
283 // Fix for Mac OS X defining uintptr_t as "unsigned long": | 277 // Fix for Mac OS X defining uintptr_t as "unsigned long": |
284 #if V8_OS_MACOSX | 278 #if V8_OS_MACOSX |
285 #undef V8PRIxPTR | 279 #undef V8PRIxPTR |
286 #define V8PRIxPTR "lx" | 280 #define V8PRIxPTR "lx" |
287 #undef V8PRIdPTR | |
288 #define V8PRIdPTR "ld" | |
289 #undef V8PRIuPTR | 281 #undef V8PRIuPTR |
290 #define V8PRIuPTR "lxu" | 282 #define V8PRIuPTR "lxu" |
291 #endif | 283 #endif |
292 | 284 |
| 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 |
293 // The following macro works on both 32 and 64-bit platforms. | 294 // The following macro works on both 32 and 64-bit platforms. |
294 // Usage: instead of writing 0x1234567890123456 | 295 // Usage: instead of writing 0x1234567890123456 |
295 // write V8_2PART_UINT64_C(0x12345678,90123456); | 296 // write V8_2PART_UINT64_C(0x12345678,90123456); |
296 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) | 297 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) |
297 | 298 |
298 | 299 |
299 // Compute the 0-relative offset of some absolute value x of type T. | 300 // Compute the 0-relative offset of some absolute value x of type T. |
300 // This allows conversion of Addresses and integral types into | 301 // This allows conversion of Addresses and integral types into |
301 // 0-relative int offsets. | 302 // 0-relative int offsets. |
302 template <typename T> | 303 template <typename T> |
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341 | 342 |
342 template <> | 343 template <> |
343 inline bool is_fundamental<uint8_t>() { | 344 inline bool is_fundamental<uint8_t>() { |
344 return true; | 345 return true; |
345 } | 346 } |
346 | 347 |
347 } // namespace base | 348 } // namespace base |
348 } // namespace v8 | 349 } // namespace v8 |
349 | 350 |
350 #endif // V8_BASE_MACROS_H_ | 351 #endif // V8_BASE_MACROS_H_ |
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