Quick and Dirty fix for alignment issue on ARM/MIPS platform for Webkit2/qt5.3.1

alignment.patch

diff --git a/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.cpp b/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.cpp
index 43246f4..bdbc2f1 100644
--- a/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.cpp
+++ b/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.cpp
@@ -61,17 +61,18 @@ PassOwnPtr<ArgumentEncoder> ArgumentEncoder::create()
 }
 
 ArgumentEncoder::ArgumentEncoder()
-    : m_buffer(m_inlineBuffer)
-    , m_bufferPointer(m_inlineBuffer)
+    : m_initialBuffer(m_inlineBuffer)
+    , m_buffer( (uint8_t*) ( ((uintptr_t)(m_inlineBuffer + 7 )) & ~7) )
+    , m_bufferPointer(m_buffer)
     , m_bufferSize(0)
-    , m_bufferCapacity(sizeof(m_inlineBuffer))
+    , m_bufferCapacity(sizeof(m_inlineBuffer) - (uint32_t)(m_buffer - m_inlineBuffer))
 {
 }
 
 ArgumentEncoder::~ArgumentEncoder()
 {
-    if (m_buffer != m_inlineBuffer)
-        freeBuffer(m_buffer, m_bufferCapacity);
+    if (m_initialBuffer != m_inlineBuffer)
+        freeBuffer(m_initialBuffer, m_bufferCapacity + (uint32_t)(m_buffer - m_initialBuffer));
 
 #if !USE(UNIX_DOMAIN_SOCKETS)
     // FIXME: We need to dispose of the attachments in cases of failure.
@@ -95,17 +96,19 @@ uint8_t* ArgumentEncoder::grow(unsigned alignment, size_t size)
         while (newCapacity < alignedSize + size)
             newCapacity *= 2;
 
-        uint8_t* newBuffer = static_cast<uint8_t*>(allocBuffer(newCapacity));
-        if (!newBuffer)
+        uint8_t* newInitialBuffer = static_cast<uint8_t*>(allocBuffer(newCapacity + 8));
+        if (!newInitialBuffer)
             CRASH();
 
+        uint8_t* newBuffer = (uint8_t*)(((uintptr_t) newInitialBuffer + 7 ) & ~7 );
         memcpy(newBuffer, m_buffer, m_bufferSize);
 
-        if (m_buffer != m_inlineBuffer)
-            freeBuffer(m_buffer, m_bufferCapacity);
+        if (m_initialBuffer != m_inlineBuffer)
+            freeBuffer(m_initialBuffer, m_bufferCapacity + (uint32_t)(m_buffer - m_initialBuffer));
 
+        m_initialBuffer = newInitialBuffer;
         m_buffer = newBuffer;
-        m_bufferCapacity = newCapacity;
+        m_bufferCapacity = newCapacity + 8 - (uint32_t)(m_buffer - m_initialBuffer);
     }
 
     m_bufferSize = alignedSize + size;
diff --git a/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.h b/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.h
index 72be12a..b3c99c9 100644
--- a/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.h
+++ b/qtwebkit/Source/WebKit2/Platform/CoreIPC/ArgumentEncoder.h
@@ -85,8 +85,9 @@ private:
 
     uint8_t* grow(unsigned alignment, size_t size);
 
-    uint8_t m_inlineBuffer[512];
+    uint8_t m_inlineBuffer[512+8];
 
+    uint8_t* m_initialBuffer; // condition: m_initialbuffer <= m_bufer <= m_initialbuffer + 7, m_buffer & 7 == 0
     uint8_t* m_buffer;
     uint8_t* m_bufferPointer;