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Issue 225393005: x64: Make sure that the upper half of a 64bit register contains 0 for int32 values. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Rebased. Added comment. Created 6 years, 8 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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97 __ andq(rdx, Operand(rsp, 4)); 97 __ andq(rdx, Operand(rsp, 4));
98 __ cmpq(rdx, Immediate(3)); 98 __ cmpq(rdx, Immediate(3));
99 __ cmpq(rdx, Operand(rsp, 4)); 99 __ cmpq(rdx, Operand(rsp, 4));
100 __ cmpq(Operand(rbp, rcx, times_4, 0), Immediate(1000)); 100 __ cmpq(Operand(rbp, rcx, times_4, 0), Immediate(1000));
101 __ cmpb(rbx, Operand(rbp, rcx, times_2, 0)); 101 __ cmpb(rbx, Operand(rbp, rcx, times_2, 0));
102 __ cmpb(Operand(rbp, rcx, times_2, 0), rbx); 102 __ cmpb(Operand(rbp, rcx, times_2, 0), rbx);
103 __ orq(rdx, Immediate(3)); 103 __ orq(rdx, Immediate(3));
104 __ xorq(rdx, Immediate(3)); 104 __ xorq(rdx, Immediate(3));
105 __ nop(); 105 __ nop();
106 __ cpuid(); 106 __ cpuid();
107 __ movsxbl(rdx, Operand(rcx, 0));
107 __ movsxbq(rdx, Operand(rcx, 0)); 108 __ movsxbq(rdx, Operand(rcx, 0));
109 __ movsxwl(rdx, Operand(rcx, 0));
108 __ movsxwq(rdx, Operand(rcx, 0)); 110 __ movsxwq(rdx, Operand(rcx, 0));
109 __ movzxbl(rdx, Operand(rcx, 0)); 111 __ movzxbl(rdx, Operand(rcx, 0));
110 __ movzxwl(rdx, Operand(rcx, 0)); 112 __ movzxwl(rdx, Operand(rcx, 0));
111 __ movzxbq(rdx, Operand(rcx, 0)); 113 __ movzxbq(rdx, Operand(rcx, 0));
112 __ movzxwq(rdx, Operand(rcx, 0)); 114 __ movzxwq(rdx, Operand(rcx, 0));
113 115
114 __ nop(); 116 __ nop();
115 __ imulq(rdx, rcx); 117 __ imulq(rdx, rcx);
116 __ shld(rdx, rcx); 118 __ shld(rdx, rcx);
117 __ shrd(rdx, rcx); 119 __ shrd(rdx, rcx);
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436 CHECK(code->IsCode()); 438 CHECK(code->IsCode());
437 #ifdef OBJECT_PRINT 439 #ifdef OBJECT_PRINT
438 Code::cast(code)->Print(); 440 Code::cast(code)->Print();
439 byte* begin = Code::cast(code)->instruction_start(); 441 byte* begin = Code::cast(code)->instruction_start();
440 byte* end = begin + Code::cast(code)->instruction_size(); 442 byte* end = begin + Code::cast(code)->instruction_size();
441 disasm::Disassembler::Disassemble(stdout, begin, end); 443 disasm::Disassembler::Disassemble(stdout, begin, end);
442 #endif 444 #endif
443 } 445 }
444 446
445 #undef __ 447 #undef __
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