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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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260 const int kBinary32ExponentBias = 127; | 260 const int kBinary32ExponentBias = 127; |
261 const int kBinary32MaxExponent = 0xFE; | 261 const int kBinary32MaxExponent = 0xFE; |
262 const int kBinary32MinExponent = 0x01; | 262 const int kBinary32MinExponent = 0x01; |
263 const int kBinary32MantissaBits = 23; | 263 const int kBinary32MantissaBits = 23; |
264 const int kBinary32ExponentShift = 23; | 264 const int kBinary32ExponentShift = 23; |
265 | 265 |
266 // Quiet NaNs have bits 51 to 62 set, possibly the sign bit, and no | 266 // Quiet NaNs have bits 51 to 62 set, possibly the sign bit, and no |
267 // other bits set. | 267 // other bits set. |
268 const uint64_t kQuietNaNMask = static_cast<uint64_t>(0xfff) << 51; | 268 const uint64_t kQuietNaNMask = static_cast<uint64_t>(0xfff) << 51; |
269 | 269 |
270 // ASCII/UC16 constants | 270 // ASCII/UTF-16 constants |
271 // Code-point values in Unicode 4.0 are 21 bits wide. | 271 // Code-point values in Unicode 4.0 are 21 bits wide. |
| 272 // Code units in UTF-16 are 16 bits wide. |
272 typedef uint16_t uc16; | 273 typedef uint16_t uc16; |
273 typedef int32_t uc32; | 274 typedef int32_t uc32; |
274 const int kASCIISize = kCharSize; | 275 const int kASCIISize = kCharSize; |
275 const int kUC16Size = sizeof(uc16); // NOLINT | 276 const int kUC16Size = sizeof(uc16); // NOLINT |
276 const uc32 kMaxAsciiCharCode = 0x7f; | 277 const uc32 kMaxAsciiCharCode = 0x7f; |
277 const uint32_t kMaxAsciiCharCodeU = 0x7fu; | 278 const uint32_t kMaxAsciiCharCodeU = 0x7fu; |
278 | 279 |
279 | 280 |
280 // The expression OFFSET_OF(type, field) computes the byte-offset | 281 // The expression OFFSET_OF(type, field) computes the byte-offset |
281 // of the specified field relative to the containing type. This | 282 // of the specified field relative to the containing type. This |
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392 // the backend, so both modes are represented by the kStrictMode value. | 393 // the backend, so both modes are represented by the kStrictMode value. |
393 enum StrictModeFlag { | 394 enum StrictModeFlag { |
394 kNonStrictMode, | 395 kNonStrictMode, |
395 kStrictMode | 396 kStrictMode |
396 }; | 397 }; |
397 | 398 |
398 | 399 |
399 } } // namespace v8::internal | 400 } } // namespace v8::internal |
400 | 401 |
401 #endif // V8_GLOBALS_H_ | 402 #endif // V8_GLOBALS_H_ |
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