From d4cf6b6c976d07af769ad3bfeeccbcf833e72c32 Mon Sep 17 00:00:00 2001
From: eric_tian <eric_tian@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 14 Aug 2009 09:39:55 +0000
Subject: [PATCH] redefine the ASM_PFX to let it can work on Apple/NetBSD and
 other Unix* platform.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9073 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Include/Ia32/ProcessorBind.h | 17 ++++++++++++-----
 MdePkg/Include/X64/ProcessorBind.h  | 17 ++++++++++++-----
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/MdePkg/Include/Ia32/ProcessorBind.h b/MdePkg/Include/Ia32/ProcessorBind.h
index 4f24c67077..a3567267d8 100644
--- a/MdePkg/Include/Ia32/ProcessorBind.h
+++ b/MdePkg/Include/Ia32/ProcessorBind.h
@@ -336,11 +336,18 @@ typedef INT32   INTN;
 // For symbol name in GNU assembly code, an extra "_" is necessary
 //
 #if defined(__GNUC__)
-  #if defined(linux)
-    #define ASM_PFX(name) name
-  #else
-    #define ASM_PFX(name) _##name
-  #endif 
+  ///
+  /// Private worker functions for ASM_PFX()
+  ///
+  #define _CONCATENATE(a, b)  __CONCATENATE(a, b)
+  #define __CONCATENATE(a, b) a ## b
+
+  ///
+  /// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix
+  /// on symbols in assembly language.
+  ///
+  #define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name)
+
   ///
   /// For GNU assembly code, .global or .globl can declare global symbols.
   /// Define this macro to unify the usage.
diff --git a/MdePkg/Include/X64/ProcessorBind.h b/MdePkg/Include/X64/ProcessorBind.h
index 363a2dca35..027d8d0f59 100644
--- a/MdePkg/Include/X64/ProcessorBind.h
+++ b/MdePkg/Include/X64/ProcessorBind.h
@@ -400,11 +400,18 @@ typedef INT64   INTN;
 // For symbol name in GNU assembly code, an extra "_" is necessary
 //
 #if defined(__GNUC__)
-  #if defined(linux)
-    #define ASM_PFX(name) name
-  #else
-    #define ASM_PFX(name) _##name
-  #endif
+  ///
+  /// Private worker functions for ASM_PFX()
+  ///
+  #define _CONCATENATE(a, b)  __CONCATENATE(a, b)
+  #define __CONCATENATE(a, b) a ## b
+
+  ///
+  /// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix
+  /// on symbols in assembly language.
+  ///
+  #define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name)
+
   ///
   /// For GNU assembly code, .global or .globl can declare global symbols.
   /// Define this macro to unify the usage.