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Issue 391073: Changes to Intel shift functions... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 11 years, 1 month ago
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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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233 // Check if the object is a string leaving the instance type in the 233 // Check if the object is a string leaving the instance type in the
234 // scratch register. 234 // scratch register.
235 GenerateStringCheck(masm, receiver, scratch, miss, &check_wrapper); 235 GenerateStringCheck(masm, receiver, scratch, miss, &check_wrapper);
236 236
237 // Load length directly from the string. 237 // Load length directly from the string.
238 __ bind(&load_length); 238 __ bind(&load_length);
239 __ and_(scratch, kStringSizeMask); 239 __ and_(scratch, kStringSizeMask);
240 __ mov(eax, FieldOperand(receiver, String::kLengthOffset)); 240 __ mov(eax, FieldOperand(receiver, String::kLengthOffset));
241 // ecx is also the receiver. 241 // ecx is also the receiver.
242 __ lea(ecx, Operand(scratch, String::kLongLengthShift)); 242 __ lea(ecx, Operand(scratch, String::kLongLengthShift));
243 __ shr(eax); // ecx is implicit shift register. 243 __ shr_cl(eax);
244 __ shl(eax, kSmiTagSize); 244 __ shl(eax, kSmiTagSize);
245 __ ret(0); 245 __ ret(0);
246 246
247 // Check if the object is a JSValue wrapper. 247 // Check if the object is a JSValue wrapper.
248 __ bind(&check_wrapper); 248 __ bind(&check_wrapper);
249 __ cmp(scratch, JS_VALUE_TYPE); 249 __ cmp(scratch, JS_VALUE_TYPE);
250 __ j(not_equal, miss, not_taken); 250 __ j(not_equal, miss, not_taken);
251 251
252 // Check if the wrapped value is a string and load the length 252 // Check if the wrapped value is a string and load the length
253 // directly if it is. 253 // directly if it is.
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1887 __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET); 1887 __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET);
1888 1888
1889 // Return the generated code. 1889 // Return the generated code.
1890 return GetCode(); 1890 return GetCode();
1891 } 1891 }
1892 1892
1893 1893
1894 #undef __ 1894 #undef __
1895 1895
1896 } } // namespace v8::internal 1896 } } // namespace v8::internal
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