Reland 21502 - "Move OS::MemCopy and OS::MemMove out of platform to utils"

src/platform-posix.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Platform-specific code for POSIX goes here. This is not a platform on its
 // own, but contains the parts which are the same across the POSIX platforms
 // Linux, MacOS, FreeBSD, OpenBSD, NetBSD and QNX.
 
 #include <dlfcn.h>
 #include <pthread.h>
@@ skipping 429 matching lines @@
     // If the length is zero, the assignment fails.
     if (str.length() > 0)
       str[str.length() - 1] = '\0';
     return -1;
   } else {
     return n;
   }
 }
 
 
-#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.
 //
 
 char* OS::StrChr(char* str, int c) {
   return strchr(str, c);
 }
 
 
 void OS::StrNCpy(Vector<char> dest, const char* src, size_t n) {
@@ skipping 230 matching lines @@
 
 void Thread::SetThreadLocal(LocalStorageKey key, void* value) {
   pthread_key_t pthread_key = LocalKeyToPthreadKey(key);
   int result = pthread_setspecific(pthread_key, value);
   ASSERT_EQ(0, result);
   USE(result);
 }
 
 
 } }  // namespace v8::internal