[MIPS] Avoid unaligned load/store for 64-bit doubles.

Change-Id: Iefdcac8742f23fef31f63730b48698fc4205c3ad
Signed-off-by: Douglas Leung <douglas@mips.com>

1 files changed, 44 insertions, 1 deletions

diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 4c15913a7f..8f7f7e76d5 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -627,11 +627,27 @@ status_t Parcel::writeFloat(float val)
     return writeAligned(val);
 }
 
+#if defined(__mips__) && defined(__mips_hard_float)
+
+status_t Parcel::writeDouble(double val)
+{
+    union {
+        double d;
+        unsigned long long ll;
+    } u;
+    u.d = val;
+    return writeAligned(u.ll);
+}
+
+#else
+
 status_t Parcel::writeDouble(double val)
 {
     return writeAligned(val);
 }
 
+#endif
+
 status_t Parcel::writeIntPtr(intptr_t val)
 {
     return writeAligned(val);
@@ -962,17 +978,44 @@ float Parcel::readFloat() const
     return readAligned<float>();
 }
 
+#if defined(__mips__) && defined(__mips_hard_float)
+
 status_t Parcel::readDouble(double *pArg) const
 {
-    return readAligned(pArg);
+    union {
+      double d;
+      unsigned long long ll;
+    } u;
+    status_t status;
+    status = readAligned(&u.ll);
+    *pArg = u.d;
+    return status;
 }
 
+double Parcel::readDouble() const
+{
+    union {
+      double d;
+      unsigned long long ll;
+    } u;
+    u.ll = readAligned<unsigned long long>();
+    return u.d;
+}
+
+#else
+
+status_t Parcel::readDouble(double *pArg) const
+{
+    return readAligned(pArg);
+}
 
 double Parcel::readDouble() const
 {
     return readAligned<double>();
 }
 
+#endif
+
 status_t Parcel::readIntPtr(intptr_t *pArg) const
 {
     return readAligned(pArg);