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| 1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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| 589 // Push a new try handler and link into try handler chain. The return | 589 // Push a new try handler and link into try handler chain. The return |
| 590 // address must be pushed before calling this helper. | 590 // address must be pushed before calling this helper. |
| 591 void PushTryHandler(CodeLocation try_location, HandlerType type); | 591 void PushTryHandler(CodeLocation try_location, HandlerType type); |
| 592 | 592 |
| 593 // Unlink the stack handler on top of the stack from the try handler chain. | 593 // Unlink the stack handler on top of the stack from the try handler chain. |
| 594 void PopTryHandler(); | 594 void PopTryHandler(); |
| 595 | 595 |
| 596 // --------------------------------------------------------------------------- | 596 // --------------------------------------------------------------------------- |
| 597 // Inline caching support | 597 // Inline caching support |
| 598 | 598 |
| 599 // Generates code that verifies that the maps of objects in the | |
| 600 // prototype chain of object hasn't changed since the code was | |
| 601 // generated and branches to the miss label if any map has. If | |
| 602 // necessary the function also generates code for security check | |
| 603 // in case of global object holders. The scratch and holder | |
| 604 // registers are always clobbered, but the object register is only | |
| 605 // clobbered if it the same as the holder register. The function | |
| 606 // returns a register containing the holder - either object_reg or | |
| 607 // holder_reg. | |
| 608 // The function can optionally (when save_at_depth != | |
| 609 // kInvalidProtoDepth) save the object at the given depth by moving | |
| 610 // it to [rsp + kPointerSize]. | |
| 611 Register CheckMaps(JSObject* object, Register object_reg, | |
| 612 JSObject* holder, Register holder_reg, | |
| 613 Register scratch, | |
| 614 int save_at_depth, | |
| 615 Label* miss); | |
| 616 | |
| 617 // Generate code for checking access rights - used for security checks | 599 // Generate code for checking access rights - used for security checks |
| 618 // on access to global objects across environments. The holder register | 600 // on access to global objects across environments. The holder register |
| 619 // is left untouched, but the scratch register and kScratchRegister, | 601 // is left untouched, but the scratch register and kScratchRegister, |
| 620 // which must be different, are clobbered. | 602 // which must be different, are clobbered. |
| 621 void CheckAccessGlobalProxy(Register holder_reg, | 603 void CheckAccessGlobalProxy(Register holder_reg, |
| 622 Register scratch, | 604 Register scratch, |
| 623 Label* miss); | 605 Label* miss); |
| 624 | 606 |
| 625 | 607 |
| 626 // --------------------------------------------------------------------------- | 608 // --------------------------------------------------------------------------- |
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| 925 } \ | 907 } \ |
| 926 masm-> | 908 masm-> |
| 927 #else | 909 #else |
| 928 #define ACCESS_MASM(masm) masm-> | 910 #define ACCESS_MASM(masm) masm-> |
| 929 #endif | 911 #endif |
| 930 | 912 |
| 931 | 913 |
| 932 } } // namespace v8::internal | 914 } } // namespace v8::internal |
| 933 | 915 |
| 934 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 916 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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