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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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