llint/LLIntExceptions.cpp

   1 /*
   2  * Copyright (C) 2011 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 "LLIntExceptions.h"
  28
  29 #if ENABLE(LLINT)
  30
  31 #include "CallFrame.h"
  32 #include "CodeBlock.h"
  33 #include "Instruction.h"
  34 #include "JITExceptions.h"
  35 #include "LLIntCommon.h"
  36 #include "LowLevelInterpreter.h"
  37
  38 namespace JSC { namespace LLInt {
  39
  40 void interpreterThrowInCaller(ExecState* exec, ReturnAddressPtr pc)
  41 {
  42     JSGlobalData* globalData = &exec->globalData();
  43     NativeCallFrameTracer tracer(globalData, exec);
  44 #if LLINT_SLOW_PATH_TRACING
  45     dataLog("Throwing exception %s.\n", globalData->exception.description());
  46 #endif
  47     genericThrow(
  48         globalData, exec, globalData->exception,
  49         exec->codeBlock()->bytecodeOffset(exec, pc));
  50 }
  51
  52 Instruction* returnToThrowForThrownException(ExecState* exec)
  53 {
  54     return exec->globalData().llintData.exceptionInstructions();
  55 }
  56
  57 Instruction* returnToThrow(ExecState* exec, Instruction* pc)
  58 {
  59     JSGlobalData* globalData = &exec->globalData();
  60     NativeCallFrameTracer tracer(globalData, exec);
  61 #if LLINT_SLOW_PATH_TRACING
  62     dataLog("Throwing exception %s (returnToThrow).\n", globalData->exception.description());
  63 #endif
  64     genericThrow(globalData, exec, globalData->exception, pc - exec->codeBlock()->instructions().begin());
  65
  66     return globalData->llintData.exceptionInstructions();
  67 }
  68
  69 void* callToThrow(ExecState* exec, Instruction* pc)
  70 {
  71     JSGlobalData* globalData = &exec->globalData();
  72     NativeCallFrameTracer tracer(globalData, exec);
  73 #if LLINT_SLOW_PATH_TRACING
  74     dataLog("Throwing exception %s (callToThrow).\n", globalData->exception.description());
  75 #endif
  76     genericThrow(globalData, exec, globalData->exception, pc - exec->codeBlock()->instructions().begin());
  77
  78     return bitwise_cast<void*>(&llint_throw_during_call_trampoline);
  79 }
  80
  81 } } // namespace JSC::LLInt
  82
  83 #endif // ENABLE(LLINT)