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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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