MdePkg: move to 'hidden' visibility for all symbols under GCC/X64

[mirror_edk2.git] / MdePkg / Include / X64 / ProcessorBind.h

diff --git a/MdePkg/Include/X64/ProcessorBind.h b/MdePkg/Include/X64/ProcessorBind.h
index 842c9a627c48b2e8ed49ae33d6eda598ac0bee67..666cc8e8bd165c3eb35ad82783fd6a41932ac36d 100644 (file)
--- a/MdePkg/Include/X64/ProcessorBind.h
+++ b/MdePkg/Include/X64/ProcessorBind.h
@@ -1,7 +1,7 @@
 /** @file\r
   Processor or Compiler specific defines and types x64 (Intel 64, AMD64).\r
 \r
-  Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
   This program and the accompanying materials                          \r
   are licensed and made available under the terms and conditions of the BSD License         \r
   which accompanies this distribution.  The full text of the license may be found at        \r
@@ -27,6 +27,15 @@
 #pragma pack()\r
 #endif\r
 \r
+#if defined(__GNUC__) && defined(__pic__)\r
+//\r
+// Mark all symbol declarations and references as hidden, meaning they will\r
+// not be subject to symbol preemption. This allows the compiler to refer to\r
+// symbols directly using relative references rather than via the GOT, which\r
+// contains absolute symbol addresses that are subject to runtime relocation.\r
+//\r
+#pragma GCC visibility push (hidden)\r
+#endif\r
 \r
 #if defined(__INTEL_COMPILER)\r
 //\r
@@ -94,6 +103,26 @@
 //\r
 #pragma warning ( disable : 4206 )\r
 \r
+#if _MSC_VER == 1800 || _MSC_VER == 1900\r
+\r
+//\r
+// Disable these warnings for VS2013.\r
+//\r
+\r
+//\r
+// This warning is for potentially uninitialized local variable, and it may cause false \r
+// positive issues in VS2013 and VS2015 build\r
+//\r
+#pragma warning ( disable : 4701 )\r
+  \r
+//\r
+// This warning is for potentially uninitialized local pointer variable, and it may cause \r
+// false positive issues in VS2013 and VS2015 build\r
+//\r
+#pragma warning ( disable : 4703 )\r
+  \r
+#endif\r
+\r
 #endif\r
 \r
 \r