Move OS::MemCopy and OS::MemMove out of platform to utils

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index be1ace1d628000512082718bcc3c368efc76c3c9..538dd148a269f48b59dfeec2d12bf7d0aedeaf7a 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -442,72 +442,6 @@ int OS::VSNPrintF(Vector<char> str,
 }
 
 
-#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87
-static void MemMoveWrapper(void* dest, const void* src, size_t size) {
-  memmove(dest, src, size);
-}
-
-
-// Initialize to library version so we can call this at any time during startup.
-static OS::MemMoveFunction memmove_function = &MemMoveWrapper;
-
-// Defined in codegen-ia32.cc.
-OS::MemMoveFunction CreateMemMoveFunction();
-
-// Copy memory area. No restrictions.
-void OS::MemMove(void* dest, const void* src, size_t size) {
-  if (size == 0) return;
-  // Note: here we rely on dependent reads being ordered. This is true
-  // on all architectures we currently support.
-  (*memmove_function)(dest, src, size);
-}
-
-#elif defined(V8_HOST_ARCH_ARM)
-void OS::MemCopyUint16Uint8Wrapper(uint16_t* dest,
-                                   const uint8_t* src,
-                                   size_t chars) {
-  uint16_t *limit = dest + chars;
-  while (dest < limit) {
-    *dest++ = static_cast<uint16_t>(*src++);
-  }
-}
-
-
-OS::MemCopyUint8Function OS::memcopy_uint8_function = &OS::MemCopyUint8Wrapper;
-OS::MemCopyUint16Uint8Function OS::memcopy_uint16_uint8_function =
-    &OS::MemCopyUint16Uint8Wrapper;
-// Defined in codegen-arm.cc.
-OS::MemCopyUint8Function CreateMemCopyUint8Function(
-    OS::MemCopyUint8Function stub);
-OS::MemCopyUint16Uint8Function CreateMemCopyUint16Uint8Function(
-    OS::MemCopyUint16Uint8Function stub);
-
-#elif defined(V8_HOST_ARCH_MIPS)
-OS::MemCopyUint8Function OS::memcopy_uint8_function = &OS::MemCopyUint8Wrapper;
-// Defined in codegen-mips.cc.
-OS::MemCopyUint8Function CreateMemCopyUint8Function(
-    OS::MemCopyUint8Function stub);
-#endif
-
-
-void OS::PostSetUp() {
-#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87
-  OS::MemMoveFunction generated_memmove = CreateMemMoveFunction();
-  if (generated_memmove != NULL) {
-    memmove_function = generated_memmove;
-  }
-#elif defined(V8_HOST_ARCH_ARM)
-  OS::memcopy_uint8_function =
-      CreateMemCopyUint8Function(&OS::MemCopyUint8Wrapper);
-  OS::memcopy_uint16_uint8_function =
-      CreateMemCopyUint16Uint8Function(&OS::MemCopyUint16Uint8Wrapper);
-#elif defined(V8_HOST_ARCH_MIPS)
-  OS::memcopy_uint8_function =
-      CreateMemCopyUint8Function(&OS::MemCopyUint8Wrapper);
-#endif
-}
-
-
 // ----------------------------------------------------------------------------
 // POSIX string support.
 //