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 81dbe188ca4983cd3fd49f0f3bf4226fade5b190..666cc8e8bd165c3eb35ad82783fd6a41932ac36d 100644 (file)
--- a/MdePkg/Include/X64/ProcessorBind.h
+++ b/MdePkg/Include/X64/ProcessorBind.h
@@ -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
@@ -94,7 +103,7 @@
 //\r
 #pragma warning ( disable : 4206 )\r
 \r
-#if _MSC_VER == 1800\r
+#if _MSC_VER == 1800 || _MSC_VER == 1900\r
 \r
 //\r
 // Disable these warnings for VS2013.\r
@@ -102,13 +111,13 @@
 \r
 //\r
 // This warning is for potentially uninitialized local variable, and it may cause false \r
-// positive issues in VS2013 build\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 build\r
+// false positive issues in VS2013 and VS2015 build\r
 //\r
 #pragma warning ( disable : 4703 )\r
   \r