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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All rights reserved. | 2 * Copyright (C) 2008 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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298 } | 298 } |
299 | 299 |
300 void JIT::privateCompilePatchGetArrayLength(ProcessorReturnAddress returnAddress
) | 300 void JIT::privateCompilePatchGetArrayLength(ProcessorReturnAddress returnAddress
) |
301 { | 301 { |
302 StructureStubInfo* stubInfo = &m_codeBlock->getStubInfo(returnAddress); | 302 StructureStubInfo* stubInfo = &m_codeBlock->getStubInfo(returnAddress); |
303 | 303 |
304 // We don't want to patch more than once - in future go to cti_op_put_by_id_
generic. | 304 // We don't want to patch more than once - in future go to cti_op_put_by_id_
generic. |
305 returnAddress.relinkCallerToFunction(JITStubs::cti_op_get_by_id_array_fail); | 305 returnAddress.relinkCallerToFunction(JITStubs::cti_op_get_by_id_array_fail); |
306 | 306 |
307 // Check eax is an array | 307 // Check eax is an array |
308 Jump failureCases1 = branchPtr(NotEqual, Address(regT0), ImmPtr(m_interprete
r->m_jsArrayVptr)); | 308 Jump failureCases1 = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData
->jsArrayVPtr)); |
309 | 309 |
310 // Checks out okay! - get the length from the storage | 310 // Checks out okay! - get the length from the storage |
311 loadPtr(Address(regT0, FIELD_OFFSET(JSArray, m_storage)), regT2); | 311 loadPtr(Address(regT0, FIELD_OFFSET(JSArray, m_storage)), regT2); |
312 load32(Address(regT2, FIELD_OFFSET(ArrayStorage, m_length)), regT2); | 312 load32(Address(regT2, FIELD_OFFSET(ArrayStorage, m_length)), regT2); |
313 | 313 |
314 Jump failureCases2 = branch32(Above, regT2, Imm32(JSImmediate::maxImmediateI
nt)); | 314 Jump failureCases2 = branch32(Above, regT2, Imm32(JSImmediate::maxImmediateI
nt)); |
315 | 315 |
316 emitFastArithIntToImmNoCheck(regT2, regT0); | 316 emitFastArithIntToImmNoCheck(regT2, regT0); |
317 Jump success = jump(); | 317 Jump success = jump(); |
318 | 318 |
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694 stubInfo->stubRoutine = patchBuffer.entry(); | 694 stubInfo->stubRoutine = patchBuffer.entry(); |
695 | 695 |
696 returnAddress.relinkCallerToFunction(code); | 696 returnAddress.relinkCallerToFunction(code); |
697 } | 697 } |
698 | 698 |
699 #endif | 699 #endif |
700 | 700 |
701 } // namespace JSC | 701 } // namespace JSC |
702 | 702 |
703 #endif // ENABLE(JIT) | 703 #endif // ENABLE(JIT) |
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