Binder: Make binder portable

Changes include
- Binder attempts to cast pointers to a int datatype
  which is not sufficient on a 64-bit platform.

- This patch introduces new read/write functions into
  Parcel that allow pointers to be written using the
  uintptr_t datatype for compile-time data type size
  selection.

-  Change access specifier for the methods above.

-  Binder uses the 64bit android_atomic_release_cas64
   (aka cmpxchg)

Change-Id: I595280541e0ba1d19c94b2ca2127bf9d96efabf1
Signed-off-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
index c95f297..fa13ff5 100644
--- a/include/binder/Parcel.h
+++ b/include/binder/Parcel.h
@@ -38,6 +38,7 @@ class TextOutput;
 struct flat_binder_object;  // defined in support_p/binder_module.h
 
 class Parcel {
+    friend class IPCThreadState;
 public:
     class ReadableBlob;
     class WritableBlob;
@@ -218,6 +219,9 @@ private:
     status_t            growData(size_t len);
     status_t            restartWrite(size_t desired);
     status_t            continueWrite(size_t desired);
+    status_t            writePointer(uintptr_t val);
+    status_t            readPointer(uintptr_t *pArg) const;
+    uintptr_t           readPointer() const;
     void                freeDataNoInit();
     void                initState();
     void                scanForFds() const;