diff options
Diffstat (limited to 'Source/JavaScriptCore/llint/LLIntPCRanges.h')
| -rw-r--r-- | Source/JavaScriptCore/llint/LLIntPCRanges.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/llint/LLIntPCRanges.h b/Source/JavaScriptCore/llint/LLIntPCRanges.h new file mode 100644 index 000000000..fdb48598f --- /dev/null +++ b/Source/JavaScriptCore/llint/LLIntPCRanges.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2016 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LLIntPCRanges_h +#define LLIntPCRanges_h + +namespace JSC { + +namespace LLInt { + +// These are used just to denote where LLInt code begins and where it ends. +extern "C" { + void llintPCRangeStart(); + void llintPCRangeEnd(); +} + +ALWAYS_INLINE bool isLLIntPC(void* pc) +{ + uintptr_t pcAsInt = bitwise_cast<uintptr_t>(pc); + uintptr_t llintStart = bitwise_cast<uintptr_t>(llintPCRangeStart); + uintptr_t llintEnd = bitwise_cast<uintptr_t>(llintPCRangeEnd); + RELEASE_ASSERT(llintStart < llintEnd); + return llintStart <= pcAsInt && pcAsInt <= llintEnd; +} + +#if ENABLE(JIT) +static const GPRReg LLIntPC = GPRInfo::regT4; +#endif + +} } // namespace JSC::LLInt + +#endif // LLIntPCRanges_h |