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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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177 | 177 |
178 // Generates code that verifies that the maps of objects in the | 178 // Generates code that verifies that the maps of objects in the |
179 // prototype chain of object hasn't changed since the code was | 179 // prototype chain of object hasn't changed since the code was |
180 // generated and branches to the miss label if any map has. If | 180 // generated and branches to the miss label if any map has. If |
181 // necessary the function also generates code for security check | 181 // necessary the function also generates code for security check |
182 // in case of global object holders. The scratch and holder | 182 // in case of global object holders. The scratch and holder |
183 // registers are always clobbered, but the object register is only | 183 // registers are always clobbered, but the object register is only |
184 // clobbered if it the same as the holder register. The function | 184 // clobbered if it the same as the holder register. The function |
185 // returns a register containing the holder - either object_reg or | 185 // returns a register containing the holder - either object_reg or |
186 // holder_reg. | 186 // holder_reg. |
| 187 // The function can optionally (when save_at_depth != |
| 188 // kInvalidProtoDepth) save the object at the given depth by moving |
| 189 // it to [sp]. |
187 Register CheckMaps(JSObject* object, Register object_reg, | 190 Register CheckMaps(JSObject* object, Register object_reg, |
188 JSObject* holder, Register holder_reg, | 191 JSObject* holder, Register holder_reg, |
189 Register scratch, Label* miss); | 192 Register scratch, |
| 193 int save_at_depth, |
| 194 Label* miss); |
190 | 195 |
191 // Generate code for checking access rights - used for security checks | 196 // Generate code for checking access rights - used for security checks |
192 // on access to global objects across environments. The holder register | 197 // on access to global objects across environments. The holder register |
193 // is left untouched, whereas both scratch registers are clobbered. | 198 // is left untouched, whereas both scratch registers are clobbered. |
194 void CheckAccessGlobalProxy(Register holder_reg, | 199 void CheckAccessGlobalProxy(Register holder_reg, |
195 Register scratch, | 200 Register scratch, |
196 Label* miss); | 201 Label* miss); |
197 | 202 |
198 | 203 |
199 // --------------------------------------------------------------------------- | 204 // --------------------------------------------------------------------------- |
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539 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 544 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
540 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 545 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
541 #else | 546 #else |
542 #define ACCESS_MASM(masm) masm-> | 547 #define ACCESS_MASM(masm) masm-> |
543 #endif | 548 #endif |
544 | 549 |
545 | 550 |
546 } } // namespace v8::internal | 551 } } // namespace v8::internal |
547 | 552 |
548 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 553 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ |
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