149 lines
4.2 KiB
C++
149 lines
4.2 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is [Open Source Virtual Machine.].
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*
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* The Initial Developer of the Original Code is
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* Adobe System Incorporated.
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* Portions created by the Initial Developer are Copyright (C) 2004-2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Adobe AS3 Team
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "avmplus.h"
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namespace avmplus
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{
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//
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// Exception
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//
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Exception::Exception(Atom atom
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#ifdef DEBUGGER
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, AvmCore* core
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#endif /* DEBUGGER */
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)
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{
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this->atom = atom;
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this->flags = 0;
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#ifdef DEBUGGER
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// If the exception atom is an Error object, copy its stack trace.
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// Otherwise, generate a new stack trace.
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if (core->istype(atom, core->traits.error_itraits))
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{
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stackTrace = ((ErrorObject*)AvmCore::atomToScriptObject(atom))->getStackTrace();
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}
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else
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{
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stackTrace = core->newStackTrace();
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}
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#endif
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}
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bool Exception::isValid()
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{
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return (atom&7)==kObjectType;
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}
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//
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// ExceptionHandlerTable
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//
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ExceptionHandlerTable::ExceptionHandlerTable(int exception_count)
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{
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this->exception_count = exception_count;
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memset(exceptions, 0, sizeof(ExceptionHandler)*exception_count);
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}
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//
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// ExceptionFrame
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//
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void ExceptionFrame::beginTry(AvmCore* core)
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{
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this->core = core;
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prevFrame = core->exceptionFrame;
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if (!prevFrame) {
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// Do special setup for first frame
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core->setStackBase();
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}
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core->exceptionFrame = this;
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#ifdef DEBUGGER
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callStack = core->callStack;
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// beginTry() is called from both the TRY macro and from JIT'd code. The TRY
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// macro will immediately change the value of catchAction right after the
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// call to beginTry(); but the JIT'd code does not change catchAction. So,
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// we initialize catchAction to the value that it needs when we're called
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// from JIT'd code, that is, kCatchAction_SearchForActionScriptExceptionHandler.
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catchAction = kCatchAction_SearchForActionScriptExceptionHandler;
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#endif /* DEBUGGER */
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codeContextAtom = core->codeContextAtom;
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dxnsAddr = core->dxnsAddr;
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}
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void ExceptionFrame::endTry()
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{
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if (core) {
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// ISSUE do we need to check core if it is set in constructor?
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core->exceptionFrame = prevFrame;
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// Restore the code context to what it was before the try
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core->codeContextAtom = codeContextAtom;
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}
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}
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void ExceptionFrame::throwException(Exception *exception)
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{
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core->exceptionAddr = exception;
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longjmp(jmpbuf, (int)(uintptr)exception); // returning exception ptr still important for MIR 32-bit
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}
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void ExceptionFrame::beginCatch()
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{
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core->exceptionFrame = prevFrame;
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#ifdef DEBUGGER
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//AvmAssert(callStack && callStack->env);
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if (core->profiler->profilingDataWanted && callStack && callStack->env)
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core->profiler->sendCatch(callStack->env->method);
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core->callStack = callStack;
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#endif // DEBUGGER
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core->codeContextAtom = codeContextAtom;
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core->dxnsAddr = dxnsAddr;
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}
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}
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