X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FSystem%2FMemory.cpp;h=ef23b8d12aabdbe38d65fe878b0f8bf7acfdd44a;hb=401b90a4bc2c5d78476f096bc020fecac5c257d4;hp=3660bcb1a4a251f7d5e810fcdfdf17d658a71767;hpb=cce6c297c54b4c9c8615c77e97cd64e70812ea60;p=oota-llvm.git

diff --git a/lib/System/Memory.cpp b/lib/System/Memory.cpp
index 3660bcb1a4a..ef23b8d12aa 100644
--- a/lib/System/Memory.cpp
+++ b/lib/System/Memory.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/System/Memory.h"
+#include "llvm/System/Valgrind.h"
 #include "llvm/Config/config.h"
 
 namespace llvm {
@@ -35,26 +36,39 @@ extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
 void llvm::sys::Memory::InvalidateInstructionCache(const void *Addr,
                                                    size_t Len) {
   
-// icache invalidation for PPC.
-#if (defined(__POWERPC__) || defined (__ppc__) || \
-     defined(_POWER) || defined(_ARCH_PPC))
-   #if defined(__APPLE__)
-       sys_icache_invalidate(Addr, Len);
-   #elif defined(__GNUC__)
-        const size_t LineSize = 32;
-
-        const intptr_t Mask = ~(LineSize - 1);
-        const intptr_t StartLine = ((intptr_t) Addr) & Mask;
-        const intptr_t EndLine = ((intptr_t) Addr + Len + LineSize - 1) & Mask;
-
-        for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
-          asm volatile("dcbf 0, %0" : : "r"(Line));
-        asm volatile("sync");
-
-        for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
-          asm volatile("icbi 0, %0" : : "r"(Line));
-        asm volatile("isync");
-   #endif
-#endif  // end PPC
+// icache invalidation for PPC and ARM.
+#if defined(__APPLE__)
 
+#  if (defined(__POWERPC__) || defined (__ppc__) || \
+     defined(_POWER) || defined(_ARCH_PPC)) || defined(__arm__)
+  sys_icache_invalidate(Addr, Len);
+#  endif
+
+#else
+
+#  if (defined(__POWERPC__) || defined (__ppc__) || \
+       defined(_POWER) || defined(_ARCH_PPC)) && defined(__GNUC__)
+  const size_t LineSize = 32;
+
+  const intptr_t Mask = ~(LineSize - 1);
+  const intptr_t StartLine = ((intptr_t) Addr) & Mask;
+  const intptr_t EndLine = ((intptr_t) Addr + Len + LineSize - 1) & Mask;
+
+  for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
+    asm volatile("dcbf 0, %0" : : "r"(Line));
+  asm volatile("sync");
+
+  for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
+    asm volatile("icbi 0, %0" : : "r"(Line));
+  asm volatile("isync");
+#  elif defined(__arm__) && defined(__GNUC__)
+  // FIXME: Can we safely always call this for __GNUC__ everywhere?
+  char *Start = (char*) Addr;
+  char *End = Start + Len;
+  __clear_cache(Start, End);
+#  endif
+
+#endif  // end apple
+
+  ValgrindDiscardTranslations(Addr, Len);
 }