pixelflinger: use __builtin___clear_cache instead of cacheflush

cacheflush doesn't exist on LP64 any more, and gcc's
__builtin___clear_cache is better in every way.  Use it instead.

Change-Id: Ibbf6facbdefc15b6dda51d014e1c44fb7aa2b17d

2 files changed, 3 insertions, 7 deletions

diff --git a/libpixelflinger/codeflinger/CodeCache.cpp b/libpixelflinger/codeflinger/CodeCache.cpp
index 4fe30d91e..7446da286 100644
--- a/libpixelflinger/codeflinger/CodeCache.cpp
+++ b/libpixelflinger/codeflinger/CodeCache.cpp
@@ -201,13 +201,9 @@ int CodeCache::cache(  const AssemblyKeyBase& keyBase,
         mCacheInUse += assemblySize;
         mWhen++;
         // synchronize caches...
-#if defined(__arm__) || defined(__mips__) || defined(__aarch64__)
         const long base = long(assembly->base());
         const long curr = base + long(assembly->size());
-        err = cacheflush(base, curr, 0);
-        ALOGE_IF(err, "cacheflush error %s\n",
-                 strerror(errno));
-#endif
+        __builtin___clear_cache((void*)base, (void*)curr);
     }
 
     pthread_mutex_unlock(&mLock);
diff --git a/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp b/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
index 84381d585..456be58a0 100644
--- a/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
+++ b/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
@@ -405,11 +405,11 @@ dataTransferTest_t dataTransferTests [] =
 };
 
 
-int flushcache()
+void flushcache()
 {
     const long base = long(instrMem);
     const long curr = base + long(instrMemSize);
-    return cacheflush(base, curr, 0);
+    __builtin___clear_cache((void*)base, (void*)curr);
 }
 void dataOpTest(dataOpTest_t test, ARMAssemblerInterface *a64asm, uint32_t Rd = 0,
                 uint32_t Rn = 1, uint32_t Rm = 2, uint32_t Rs = 3)