From 32761a6cee1d0dee366b885b7b9c777e67885688 Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Sun, 10 Apr 2016 09:28:39 +0000
Subject: webkitgtk-2.4.11

---
 Source/JavaScriptCore/jit/JITExceptions.cpp | 33 ++++++++---------------------
 1 file changed, 9 insertions(+), 24 deletions(-)

(limited to 'Source/JavaScriptCore/jit/JITExceptions.cpp')

diff --git a/Source/JavaScriptCore/jit/JITExceptions.cpp b/Source/JavaScriptCore/jit/JITExceptions.cpp
index cf2ea28af..8084f773b 100644
--- a/Source/JavaScriptCore/jit/JITExceptions.cpp
+++ b/Source/JavaScriptCore/jit/JITExceptions.cpp
@@ -27,53 +27,38 @@
 #include "JITExceptions.h"
 
 #include "CallFrame.h"
+#include "CallFrameInlines.h"
 #include "CodeBlock.h"
 #include "Interpreter.h"
+#include "JITStubs.h"
 #include "JSCJSValue.h"
 #include "LLIntData.h"
 #include "LLIntOpcode.h"
 #include "LLIntThunks.h"
 #include "Opcode.h"
-#include "JSCInlines.h"
+#include "Operations.h"
 #include "VM.h"
 
 namespace JSC {
 
-void genericUnwind(VM* vm, ExecState* callFrame, UnwindStart unwindStart)
+void genericUnwind(VM* vm, ExecState* callFrame, JSValue exceptionValue)
 {
-    if (Options::breakOnThrow()) {
-        CodeBlock* codeBlock = callFrame->codeBlock();
-        if (codeBlock)
-            dataLog("In call frame ", RawPointer(callFrame), " for code block ", *codeBlock, "\n");
-        else
-            dataLog("In call frame ", RawPointer(callFrame), " with null CodeBlock\n");
-        CRASH();
-    }
-    
-    Exception* exception = vm->exception();
-    RELEASE_ASSERT(exception);
-    HandlerInfo* handler = vm->interpreter->unwind(*vm, callFrame, exception, unwindStart); // This may update callFrame.
+    RELEASE_ASSERT(exceptionValue);
+    HandlerInfo* handler = vm->interpreter->unwind(callFrame, exceptionValue); // This may update callFrame.
 
     void* catchRoutine;
     Instruction* catchPCForInterpreter = 0;
     if (handler) {
-        // handler->target is meaningless for getting a code offset when catching
-        // the exception in a DFG/FTL frame. This bytecode target offset could be
-        // something that's in an inlined frame, which means an array access
-        // with this bytecode offset in the machine frame is utterly meaningless
-        // and can cause an overflow. OSR exit properly exits to handler->target
-        // in the proper frame.
-        if (!JITCode::isOptimizingJIT(callFrame->codeBlock()->jitType()))
-            catchPCForInterpreter = &callFrame->codeBlock()->instructions()[handler->target];
+        catchPCForInterpreter = &callFrame->codeBlock()->instructions()[handler->target];
 #if ENABLE(JIT)
         catchRoutine = handler->nativeCode.executableAddress();
 #else
         catchRoutine = catchPCForInterpreter->u.pointer;
 #endif
     } else
-        catchRoutine = LLInt::getCodePtr(handleUncaughtException);
+        catchRoutine = LLInt::getCodePtr(returnFromJavaScript);
     
-    vm->callFrameForCatch = callFrame;
+    vm->callFrameForThrow = callFrame;
     vm->targetMachinePCForThrow = catchRoutine;
     vm->targetInterpreterPCForThrow = catchPCForInterpreter;
     
-- 
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