OLD | NEW |
1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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 |
(...skipping 554 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
565 while (lhs < limit) { | 565 while (lhs < limit) { |
566 int r = static_cast<int>(*lhs) - static_cast<int>(*rhs); | 566 int r = static_cast<int>(*lhs) - static_cast<int>(*rhs); |
567 if (r != 0) return r; | 567 if (r != 0) return r; |
568 ++lhs; | 568 ++lhs; |
569 ++rhs; | 569 ++rhs; |
570 } | 570 } |
571 return 0; | 571 return 0; |
572 } | 572 } |
573 | 573 |
574 | 574 |
| 575 template <typename T> |
| 576 static inline void MemsetPointer(T** dest, T* value, int counter) { |
| 577 #if defined(V8_HOST_ARCH_IA32) |
| 578 #define STOS "stosl" |
| 579 #elif defined(V8_HOST_ARCH_X64) |
| 580 #define STOS "stosq" |
| 581 #endif |
| 582 |
| 583 #if defined(__GNUC__) && defined(STOS) |
| 584 asm("cld;" |
| 585 "rep ; " STOS |
| 586 : /* no output */ |
| 587 : "c" (counter), "a" (value), "D" (dest) |
| 588 : /* no clobbered list as all inputs are considered clobbered */); |
| 589 #else |
| 590 for (int i = 0; i < counter; i++) { |
| 591 dest[i] = value; |
| 592 } |
| 593 #endif |
| 594 |
| 595 #undef STOS |
| 596 } |
| 597 |
| 598 |
575 // Calculate 10^exponent. | 599 // Calculate 10^exponent. |
576 int TenToThe(int exponent); | 600 int TenToThe(int exponent); |
577 | 601 |
578 } } // namespace v8::internal | 602 } } // namespace v8::internal |
579 | 603 |
580 #endif // V8_UTILS_H_ | 604 #endif // V8_UTILS_H_ |
OLD | NEW |