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Issue 1276113002: Security: disable nontemporals. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 4 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include <stdlib.h> 5 #include <stdlib.h>
6 #include <cmath> 6 #include <cmath>
7 #include <cstdarg> 7 #include <cstdarg>
8 #include "src/v8.h" 8 #include "src/v8.h"
9 9
10 #if V8_TARGET_ARCH_ARM64 10 #if V8_TARGET_ARCH_ARM64
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1669 void Simulator::VisitLoadStorePairPreIndex(Instruction* instr) { 1669 void Simulator::VisitLoadStorePairPreIndex(Instruction* instr) {
1670 LoadStorePairHelper(instr, PreIndex); 1670 LoadStorePairHelper(instr, PreIndex);
1671 } 1671 }
1672 1672
1673 1673
1674 void Simulator::VisitLoadStorePairPostIndex(Instruction* instr) { 1674 void Simulator::VisitLoadStorePairPostIndex(Instruction* instr) {
1675 LoadStorePairHelper(instr, PostIndex); 1675 LoadStorePairHelper(instr, PostIndex);
1676 } 1676 }
1677 1677
1678 1678
1679 void Simulator::VisitLoadStorePairNonTemporal(Instruction* instr) {
1680 LoadStorePairHelper(instr, Offset);
1681 }
1682
1683
1684 void Simulator::LoadStorePairHelper(Instruction* instr, 1679 void Simulator::LoadStorePairHelper(Instruction* instr,
1685 AddrMode addrmode) { 1680 AddrMode addrmode) {
1686 unsigned rt = instr->Rt(); 1681 unsigned rt = instr->Rt();
1687 unsigned rt2 = instr->Rt2(); 1682 unsigned rt2 = instr->Rt2();
1688 unsigned addr_reg = instr->Rn(); 1683 unsigned addr_reg = instr->Rn();
1689 size_t access_size = 1 << instr->SizeLSPair(); 1684 size_t access_size = 1 << instr->SizeLSPair();
1690 int64_t offset = instr->ImmLSPair() * access_size; 1685 int64_t offset = instr->ImmLSPair() * access_size;
1691 uintptr_t address = LoadStoreAddress(addr_reg, offset, addrmode); 1686 uintptr_t address = LoadStoreAddress(addr_reg, offset, addrmode);
1692 uintptr_t address2 = address + access_size; 1687 uintptr_t address2 = address + access_size;
1693 uintptr_t stack = 0; 1688 uintptr_t stack = 0;
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3834 delete[] format; 3829 delete[] format;
3835 } 3830 }
3836 3831
3837 3832
3838 #endif // USE_SIMULATOR 3833 #endif // USE_SIMULATOR
3839 3834
3840 } // namespace internal 3835 } // namespace internal
3841 } // namespace v8 3836 } // namespace v8
3842 3837
3843 #endif // V8_TARGET_ARCH_ARM64 3838 #endif // V8_TARGET_ARCH_ARM64
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