d37b5750d1
Review URL: http://codereview.chromium.org/6706018 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7488 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_PLATFORM_TLS_MAC_H_
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#define V8_PLATFORM_TLS_MAC_H_
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#include "globals.h"
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namespace v8 {
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namespace internal {
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#if defined(V8_HOST_ARCH_IA32) || defined(V8_HOST_ARCH_X64)
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#define V8_FAST_TLS_SUPPORTED 1
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extern intptr_t kMacTlsBaseOffset;
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INLINE(intptr_t InternalGetExistingThreadLocal(intptr_t index));
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inline intptr_t InternalGetExistingThreadLocal(intptr_t index) {
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intptr_t result;
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#if defined(V8_HOST_ARCH_IA32)
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asm("movl %%gs:(%1,%2,4), %0;"
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:"=r"(result) // Output must be a writable register.
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:"r"(kMacTlsBaseOffset), "r"(index));
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#else
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asm("movq %%gs:(%1,%2,8), %0;"
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:"=r"(result)
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:"r"(kMacTlsBaseOffset), "r"(index));
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#endif
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return result;
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}
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#endif
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} } // namespace v8::internal
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#endif // V8_PLATFORM_TLS_MAC_H_
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