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Issue 8362024: MIPS: port RegExpMacroAssembler::CheckStackGuardState should update input string pointer... (Closed)
Patch Set: Created 9 years, 2 months ago
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1 // Copyright 2006-2010 the V8 project authors. All rights reserved. 1 // Copyright 2006-2010 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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1105 start_index + slice_offset); 1105 start_index + slice_offset);
1106 1106
1107 if (start_address != new_address) { 1107 if (start_address != new_address) {
1108 // If there is a difference, update the object pointer and start and end 1108 // If there is a difference, update the object pointer and start and end
1109 // addresses in the RegExp stack frame to match the new value. 1109 // addresses in the RegExp stack frame to match the new value.
1110 const byte* end_address = frame_entry<const byte* >(re_frame, kInputEnd); 1110 const byte* end_address = frame_entry<const byte* >(re_frame, kInputEnd);
1111 int byte_length = static_cast<int>(end_address - start_address); 1111 int byte_length = static_cast<int>(end_address - start_address);
1112 frame_entry<const String*>(re_frame, kInputString) = *subject; 1112 frame_entry<const String*>(re_frame, kInputString) = *subject;
1113 frame_entry<const byte*>(re_frame, kInputStart) = new_address; 1113 frame_entry<const byte*>(re_frame, kInputStart) = new_address;
1114 frame_entry<const byte*>(re_frame, kInputEnd) = new_address + byte_length; 1114 frame_entry<const byte*>(re_frame, kInputEnd) = new_address + byte_length;
1115 } else if (frame_entry<const String*>(re_frame, kInputString) != *subject) {
1116 // Subject string might have been a ConsString that underwent
1117 // short-circuiting during GC. That will not change start_address but
1118 // will change pointer inside the subject handle.
1119 frame_entry<const String*>(re_frame, kInputString) = *subject;
1115 } 1120 }
1116 1121
1117 return 0; 1122 return 0;
1118 } 1123 }
1119 1124
1120 1125
1121 MemOperand RegExpMacroAssemblerMIPS::register_location(int register_index) { 1126 MemOperand RegExpMacroAssemblerMIPS::register_location(int register_index) {
1122 ASSERT(register_index < (1<<30)); 1127 ASSERT(register_index < (1<<30));
1123 if (num_registers_ <= register_index) { 1128 if (num_registers_ <= register_index) {
1124 num_registers_ = register_index + 1; 1129 num_registers_ = register_index + 1;
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1265 } 1270 }
1266 1271
1267 1272
1268 #undef __ 1273 #undef __
1269 1274
1270 #endif // V8_INTERPRETED_REGEXP 1275 #endif // V8_INTERPRETED_REGEXP
1271 1276
1272 }} // namespace v8::internal 1277 }} // namespace v8::internal
1273 1278
1274 #endif // V8_TARGET_ARCH_MIPS 1279 #endif // V8_TARGET_ARCH_MIPS
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