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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 #if V8_TARGET_ARCH_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
6 | 6 |
7 #include "src/base/bits.h" | 7 #include "src/base/bits.h" |
8 #include "src/base/division-by-constant.h" | 8 #include "src/base/division-by-constant.h" |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1773 if (function->nargs >= 0) { | 1773 if (function->nargs >= 0) { |
1774 // TODO(1236192): Most runtime routines don't need the number of | 1774 // TODO(1236192): Most runtime routines don't need the number of |
1775 // arguments passed in because it is constant. At some point we | 1775 // arguments passed in because it is constant. At some point we |
1776 // should remove this need and make the runtime routine entry code | 1776 // should remove this need and make the runtime routine entry code |
1777 // smarter. | 1777 // smarter. |
1778 Mov(x0, function->nargs); | 1778 Mov(x0, function->nargs); |
1779 } | 1779 } |
1780 JumpToExternalReference(ExternalReference(fid, isolate())); | 1780 JumpToExternalReference(ExternalReference(fid, isolate())); |
1781 } | 1781 } |
1782 | 1782 |
1783 | |
1784 void MacroAssembler::InitializeNewString(Register string, | |
1785 Register length, | |
1786 Heap::RootListIndex map_index, | |
1787 Register scratch1, | |
1788 Register scratch2) { | |
1789 DCHECK(!AreAliased(string, length, scratch1, scratch2)); | |
1790 LoadRoot(scratch2, map_index); | |
1791 SmiTag(scratch1, length); | |
1792 Str(scratch2, FieldMemOperand(string, HeapObject::kMapOffset)); | |
1793 | |
1794 Mov(scratch2, String::kEmptyHashField); | |
1795 Str(scratch1, FieldMemOperand(string, String::kLengthOffset)); | |
1796 Str(scratch2, FieldMemOperand(string, String::kHashFieldOffset)); | |
1797 } | |
1798 | |
1799 | |
1800 int MacroAssembler::ActivationFrameAlignment() { | 1783 int MacroAssembler::ActivationFrameAlignment() { |
1801 #if V8_HOST_ARCH_ARM64 | 1784 #if V8_HOST_ARCH_ARM64 |
1802 // Running on the real platform. Use the alignment as mandated by the local | 1785 // Running on the real platform. Use the alignment as mandated by the local |
1803 // environment. | 1786 // environment. |
1804 // Note: This will break if we ever start generating snapshots on one ARM | 1787 // Note: This will break if we ever start generating snapshots on one ARM |
1805 // platform for another ARM platform with a different alignment. | 1788 // platform for another ARM platform with a different alignment. |
1806 return base::OS::ActivationFrameAlignment(); | 1789 return base::OS::ActivationFrameAlignment(); |
1807 #else // V8_HOST_ARCH_ARM64 | 1790 #else // V8_HOST_ARCH_ARM64 |
1808 // If we are using the simulator then we should always align to the expected | 1791 // If we are using the simulator then we should always align to the expected |
1809 // alignment. As the simulator is used to generate snapshots we do not know | 1792 // alignment. As the simulator is used to generate snapshots we do not know |
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4677 } | 4660 } |
4678 | 4661 |
4679 | 4662 |
4680 #undef __ | 4663 #undef __ |
4681 | 4664 |
4682 | 4665 |
4683 } // namespace internal | 4666 } // namespace internal |
4684 } // namespace v8 | 4667 } // namespace v8 |
4685 | 4668 |
4686 #endif // V8_TARGET_ARCH_ARM64 | 4669 #endif // V8_TARGET_ARCH_ARM64 |
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