| 1 | /* |
|---|
| 2 | * Copyright (C) 2008 Apple Inc. All rights reserved. |
|---|
| 3 | * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca> |
|---|
| 4 | * |
|---|
| 5 | * Redistribution and use in source and binary forms, with or without |
|---|
| 6 | * modification, are permitted provided that the following conditions |
|---|
| 7 | * are met: |
|---|
| 8 | * |
|---|
| 9 | * 1. Redistributions of source code must retain the above copyright |
|---|
| 10 | * notice, this list of conditions and the following disclaimer. |
|---|
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the |
|---|
| 13 | * documentation and/or other materials provided with the distribution. |
|---|
| 14 | * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
|---|
| 15 | * its contributors may be used to endorse or promote products derived |
|---|
| 16 | * from this software without specific prior written permission. |
|---|
| 17 | * |
|---|
| 18 | * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
|---|
| 19 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
|---|
| 20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
|---|
| 21 | * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
|---|
| 22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
|---|
| 23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|---|
| 24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
|---|
| 25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|---|
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
|---|
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|---|
| 28 | */ |
|---|
| 29 | |
|---|
| 30 | #include "config.h" |
|---|
| 31 | #include "JumpTable.h" |
|---|
| 32 | |
|---|
| 33 | namespace JSC { |
|---|
| 34 | |
|---|
| 35 | int32_t SimpleJumpTable::offsetForValue(int32_t value, int32_t defaultOffset) |
|---|
| 36 | { |
|---|
| 37 | if (value >= min && static_cast<uint32_t>(value - min) < branchOffsets.size()) { |
|---|
| 38 | int32_t offset = branchOffsets[value - min]; |
|---|
| 39 | if (offset) |
|---|
| 40 | return offset; |
|---|
| 41 | } |
|---|
| 42 | return defaultOffset; |
|---|
| 43 | } |
|---|
| 44 | |
|---|
| 45 | } // namespace JSC |
|---|
| 46 | |
|---|
