OLD | NEW |
---|---|
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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 |
(...skipping 4806 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
4817 | 4817 |
4818 // r1: previous index | 4818 // r1: previous index |
4819 // r3: encoding of subject string (1 if ASCII, 0 if two_byte); | 4819 // r3: encoding of subject string (1 if ASCII, 0 if two_byte); |
4820 // r7: code | 4820 // r7: code |
4821 // subject: Subject string | 4821 // subject: Subject string |
4822 // regexp_data: RegExp data (FixedArray) | 4822 // regexp_data: RegExp data (FixedArray) |
4823 // All checks done. Now push arguments for native regexp code. | 4823 // All checks done. Now push arguments for native regexp code. |
4824 __ IncrementCounter(isolate->counters()->regexp_entry_native(), 1, r0, r2); | 4824 __ IncrementCounter(isolate->counters()->regexp_entry_native(), 1, r0, r2); |
4825 | 4825 |
4826 // Isolates: note we add an additional parameter here (isolate pointer). | 4826 // Isolates: note we add an additional parameter here (isolate pointer). |
4827 const int kRegExpExecuteArguments = 8; | 4827 const int kRegExpExecuteArguments = 9; |
4828 const int kParameterRegisters = 4; | 4828 const int kParameterRegisters = 4; |
4829 __ EnterExitFrame(false, kRegExpExecuteArguments - kParameterRegisters); | 4829 __ EnterExitFrame(false, kRegExpExecuteArguments - kParameterRegisters); |
4830 | 4830 |
4831 // Stack pointer now points to cell where return address is to be written. | 4831 // Stack pointer now points to cell where return address is to be written. |
4832 // Arguments are before that on the stack or in registers. | 4832 // Arguments are before that on the stack or in registers. |
4833 | 4833 |
4834 // Argument 8 (sp[16]): Pass current isolate address. | 4834 // Argument 9 (sp[20]): Pass current isolate address. |
4835 __ mov(r0, Operand(ExternalReference::isolate_address())); | 4835 __ mov(r0, Operand(ExternalReference::isolate_address())); |
4836 __ str(r0, MemOperand(sp, 5 * kPointerSize)); | |
4837 | |
4838 // Argument 8 (sp[16]): Indicate that this is a direct call from JavaScript. | |
4839 __ mov(r0, Operand(1)); | |
4836 __ str(r0, MemOperand(sp, 4 * kPointerSize)); | 4840 __ str(r0, MemOperand(sp, 4 * kPointerSize)); |
4837 | 4841 |
4838 // Argument 7 (sp[12]): Indicate that this is a direct call from JavaScript. | 4842 // Argument 7 (sp[12]): Start (high end) of backtracking stack memory area. |
4839 __ mov(r0, Operand(1)); | |
4840 __ str(r0, MemOperand(sp, 3 * kPointerSize)); | |
4841 | |
4842 // Argument 6 (sp[8]): Start (high end) of backtracking stack memory area. | |
4843 __ mov(r0, Operand(address_of_regexp_stack_memory_address)); | 4843 __ mov(r0, Operand(address_of_regexp_stack_memory_address)); |
4844 __ ldr(r0, MemOperand(r0, 0)); | 4844 __ ldr(r0, MemOperand(r0, 0)); |
4845 __ mov(r2, Operand(address_of_regexp_stack_memory_size)); | 4845 __ mov(r2, Operand(address_of_regexp_stack_memory_size)); |
4846 __ ldr(r2, MemOperand(r2, 0)); | 4846 __ ldr(r2, MemOperand(r2, 0)); |
4847 __ add(r0, r0, Operand(r2)); | 4847 __ add(r0, r0, Operand(r2)); |
4848 __ str(r0, MemOperand(sp, 3 * kPointerSize)); | |
4849 | |
4850 // Argument 6: Clear the number of capture registers for non-global capture. | |
Erik Corry
2012/05/22 08:32:46
I don't understand this comment. Is argument 6 a
Yang
2012/05/22 14:48:03
Done.
| |
4851 __ mov(r0, Operand(0)); | |
4848 __ str(r0, MemOperand(sp, 2 * kPointerSize)); | 4852 __ str(r0, MemOperand(sp, 2 * kPointerSize)); |
4849 | 4853 |
4850 // Argument 5 (sp[4]): static offsets vector buffer. | 4854 // Argument 5 (sp[4]): static offsets vector buffer. |
4851 __ mov(r0, | 4855 __ mov(r0, |
4852 Operand(ExternalReference::address_of_static_offsets_vector(isolate))); | 4856 Operand(ExternalReference::address_of_static_offsets_vector(isolate))); |
4853 __ str(r0, MemOperand(sp, 1 * kPointerSize)); | 4857 __ str(r0, MemOperand(sp, 1 * kPointerSize)); |
4854 | 4858 |
4855 // For arguments 4 and 3 get string length, calculate start of string data and | 4859 // For arguments 4 and 3 get string length, calculate start of string data and |
4856 // calculate the shift of the index (0 for ASCII and 1 for two byte). | 4860 // calculate the shift of the index (0 for ASCII and 1 for two byte). |
4857 __ add(r8, subject, Operand(SeqString::kHeaderSize - kHeapObjectTag)); | 4861 __ add(r8, subject, Operand(SeqString::kHeaderSize - kHeapObjectTag)); |
(...skipping 29 matching lines...) Expand all Loading... | |
4887 | 4891 |
4888 // r0: result | 4892 // r0: result |
4889 // subject: subject string (callee saved) | 4893 // subject: subject string (callee saved) |
4890 // regexp_data: RegExp data (callee saved) | 4894 // regexp_data: RegExp data (callee saved) |
4891 // last_match_info_elements: Last match info elements (callee saved) | 4895 // last_match_info_elements: Last match info elements (callee saved) |
4892 | 4896 |
4893 // Check the result. | 4897 // Check the result. |
4894 Label success; | 4898 Label success; |
4895 | 4899 |
4896 __ cmp(r0, Operand(NativeRegExpMacroAssembler::SUCCESS)); | 4900 __ cmp(r0, Operand(NativeRegExpMacroAssembler::SUCCESS)); |
4901 // We do not expect multiple results. | |
Erik Corry
2012/05/22 08:32:46
This comment does not clarify much. Why do we not
Yang
2012/05/22 14:48:03
Done.
| |
4897 __ b(eq, &success); | 4902 __ b(eq, &success); |
4898 Label failure; | 4903 Label failure; |
4899 __ cmp(r0, Operand(NativeRegExpMacroAssembler::FAILURE)); | 4904 __ cmp(r0, Operand(NativeRegExpMacroAssembler::FAILURE)); |
4900 __ b(eq, &failure); | 4905 __ b(eq, &failure); |
4901 __ cmp(r0, Operand(NativeRegExpMacroAssembler::EXCEPTION)); | 4906 __ cmp(r0, Operand(NativeRegExpMacroAssembler::EXCEPTION)); |
4902 // If not exception it can only be retry. Handle that in the runtime system. | 4907 // If not exception it can only be retry. Handle that in the runtime system. |
4903 __ b(ne, &runtime); | 4908 __ b(ne, &runtime); |
4904 // Result must now be exception. If there is no pending exception already a | 4909 // Result must now be exception. If there is no pending exception already a |
4905 // stack overflow (on the backtrack stack) was detected in RegExp code but | 4910 // stack overflow (on the backtrack stack) was detected in RegExp code but |
4906 // haven't created the exception yet. Handle that in the runtime system. | 4911 // haven't created the exception yet. Handle that in the runtime system. |
(...skipping 2491 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
7398 __ StoreNumberToDoubleElements(r0, r3, r1, r5, r6, r7, r9, r2, | 7403 __ StoreNumberToDoubleElements(r0, r3, r1, r5, r6, r7, r9, r2, |
7399 &slow_elements); | 7404 &slow_elements); |
7400 __ Ret(); | 7405 __ Ret(); |
7401 } | 7406 } |
7402 | 7407 |
7403 #undef __ | 7408 #undef __ |
7404 | 7409 |
7405 } } // namespace v8::internal | 7410 } } // namespace v8::internal |
7406 | 7411 |
7407 #endif // V8_TARGET_ARCH_ARM | 7412 #endif // V8_TARGET_ARCH_ARM |
OLD | NEW |