| | 1 | /* |
| | 2 | * Copyright (C) 2012, 2013 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * Redistribution and use in source and binary forms, with or without |
| | 5 | * modification, are permitted provided that the following conditions |
| | 6 | * are met: |
| | 7 | * 1. Redistributions of source code must retain the above copyright |
| | 8 | * notice, this list of conditions and the following disclaimer. |
| | 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 10 | * notice, this list of conditions and the following disclaimer in the |
| | 11 | * documentation and/or other materials provided with the distribution. |
| | 12 | * |
| | 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| | 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| | 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| | 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| | 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| | 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| | 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| | 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| | 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| | 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| | 24 | */ |
| | 25 | |
| | 26 | #include "config.h" |
| | 27 | #include "JITExceptions.h" |
| | 28 | |
| | 29 | #include "CallFrame.h" |
| | 30 | #include "CodeBlock.h" |
| | 31 | #include "Interpreter.h" |
| | 32 | #include "JITStubs.h" |
| | 33 | #include "JSCJSValue.h" |
| | 34 | #include "LLIntData.h" |
| | 35 | #include "LLIntOpcode.h" |
| | 36 | #include "LLIntThunks.h" |
| | 37 | #include "Opcode.h" |
| | 38 | #include "JSCInlines.h" |
| | 39 | #include "VM.h" |
| | 40 | |
| | 41 | namespace JSC { |
| | 42 | |
| | 43 | void genericUnwind(VM* vm, ExecState* callFrame) |
| | 44 | { |
| | 45 | if (Options::breakOnThrow()) { |
| | 46 | dataLog("In call frame ", RawPointer(callFrame), " for code block ", *callFrame->codeBlock(), "\n"); |
| | 47 | CRASH(); |
| | 48 | } |
| | 49 | |
| | 50 | Exception* exception = vm->exception(); |
| | 51 | RELEASE_ASSERT(exception); |
| | 52 | VMEntryFrame* vmEntryFrame = vm->topVMEntryFrame; |
| | 53 | HandlerInfo* handler = vm->interpreter->unwind(vmEntryFrame, callFrame, exception); // This may update vmEntryFrame and callFrame. |
| | 54 | |
| | 55 | void* catchRoutine; |
| | 56 | Instruction* catchPCForInterpreter = 0; |
| | 57 | if (handler) { |
| | 58 | catchPCForInterpreter = &callFrame->codeBlock()->instructions()[handler->target]; |
| | 59 | #if ENABLE(JIT) |
| | 60 | catchRoutine = handler->nativeCode.executableAddress(); |
| | 61 | #else |
| | 62 | catchRoutine = catchPCForInterpreter->u.pointer; |
| | 63 | #endif |
| | 64 | } else |
| | 65 | catchRoutine = LLInt::getCodePtr(handleUncaughtException); |
| | 66 | |
| | 67 | vm->vmEntryFrameForThrow = vmEntryFrame; |
| | 68 | vm->callFrameForThrow = callFrame; |
| | 69 | vm->targetMachinePCForThrow = catchRoutine; |
| | 70 | vm->targetInterpreterPCForThrow = catchPCForInterpreter; |
| | 71 | |
| | 72 | RELEASE_ASSERT(catchRoutine); |
| | 73 | } |
| | 74 | |
| | 75 | } // namespace JSC |
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