Remove duplication in Program::Execute{And,No}Wait.

[oota-llvm.git] / lib / System / Memory.cpp

diff --git a/lib/System/Memory.cpp b/lib/System/Memory.cpp
index 71f1948de6586372e6720177cb64406524a3e184..375c73cf0204993dd9c7112260befacac338f1ed 100644 (file)
--- a/lib/System/Memory.cpp
+++ b/lib/System/Memory.cpp
@@ -1,10 +1,10 @@
 //===- Memory.cpp - Memory Handling Support ---------------------*- C++ -*-===//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Reid Spencer and is distributed under the 
-// University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
 //===----------------------------------------------------------------------===//
 //
 // This file defines some helpful functions for allocating memory and dealing
@@ -17,12 +17,6 @@
 
 namespace llvm {
 using namespace sys;
-
-//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only TRULY operating system
-//===          independent code. 
-//===----------------------------------------------------------------------===//
-
 }
 
 // Include the platform-specific parts of this class.
@@ -33,4 +27,36 @@ using namespace sys;
 #include "Win32/Memory.inc"
 #endif
 
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
+extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
+
+/// InvalidateInstructionCache - Before the JIT can run a block of code
+/// that has been emitted it must invalidate the instruction cache on some
+/// platforms.
+void llvm::sys::Memory::InvalidateInstructionCache(const void *Addr,
+                                                   size_t Len) {
+  
+// 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");
+#endif
+#endif  // end apple
+}