1. Remove .extern from GCC assembly.

2. Define macro for .global/.globl in GCC assembly.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8344 6f19259b-4bc3-4df7-8a09-765794883524

76 files changed, 76 insertions, 77 deletions

diff --git a/MdePkg/Library/BaseLib/X64/CpuBreakpoint.S b/MdePkg/Library/BaseLib/X64/CpuBreakpoint.S
index 95e8da16e4..fbf4de85d8 100644
--- a/MdePkg/Library/BaseLib/X64/CpuBreakpoint.S
+++ b/MdePkg/Library/BaseLib/X64/CpuBreakpoint.S
@@ -19,7 +19,7 @@
 #

 #------------------------------------------------------------------------------

 

-.global ASM_PFX(CpuBreakpoint)

+ASM_GLOBAL ASM_PFX(CpuBreakpoint)

 ASM_PFX(CpuBreakpoint):

   int $0x3

   ret

diff --git a/MdePkg/Library/BaseLib/X64/CpuId.S b/MdePkg/Library/BaseLib/X64/CpuId.S
index 0b7a66f853..8612c5d2b0 100644
--- a/MdePkg/Library/BaseLib/X64/CpuId.S
+++ b/MdePkg/Library/BaseLib/X64/CpuId.S
@@ -32,7 +32,7 @@
 #    OUT  UINT32  *RegisterOutEdx  OPTIONAL

 #    )

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmCpuid)

+ASM_GLOBAL ASM_PFX(AsmCpuid)

 ASM_PFX(AsmCpuid):

     push    %rbx

     mov     %ecx, %eax

diff --git a/MdePkg/Library/BaseLib/X64/CpuIdEx.S b/MdePkg/Library/BaseLib/X64/CpuIdEx.S
index 8dd70b2539..ae5c80a980 100644
--- a/MdePkg/Library/BaseLib/X64/CpuIdEx.S
+++ b/MdePkg/Library/BaseLib/X64/CpuIdEx.S
@@ -33,7 +33,7 @@
 #    OUT  UINT32  *RegisterOutEdx  OPTIONAL

 #    )

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmCpuidEx)

+ASM_GLOBAL ASM_PFX(AsmCpuidEx)

 ASM_PFX(AsmCpuidEx):

     push    %rbx

     movl    %ecx,%eax

diff --git a/MdePkg/Library/BaseLib/X64/CpuPause.S b/MdePkg/Library/BaseLib/X64/CpuPause.S
index 5706d872af..4afdb9ece2 100644
--- a/MdePkg/Library/BaseLib/X64/CpuPause.S
+++ b/MdePkg/Library/BaseLib/X64/CpuPause.S
@@ -28,7 +28,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(CpuPause)

+ASM_GLOBAL ASM_PFX(CpuPause)

 ASM_PFX(CpuPause):

     pause

     ret

diff --git a/MdePkg/Library/BaseLib/X64/DisableInterrupts.S b/MdePkg/Library/BaseLib/X64/DisableInterrupts.S
index 00bd7b7e9d..c688a43f2a 100644
--- a/MdePkg/Library/BaseLib/X64/DisableInterrupts.S
+++ b/MdePkg/Library/BaseLib/X64/DisableInterrupts.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(DisableInterrupts)

+ASM_GLOBAL ASM_PFX(DisableInterrupts)

 ASM_PFX(DisableInterrupts):

     cli

     ret

diff --git a/MdePkg/Library/BaseLib/X64/DisablePaging64.S b/MdePkg/Library/BaseLib/X64/DisablePaging64.S
index 8c71d2d49e..f3ed29ed40 100644
--- a/MdePkg/Library/BaseLib/X64/DisablePaging64.S
+++ b/MdePkg/Library/BaseLib/X64/DisablePaging64.S
@@ -35,7 +35,7 @@
 #   );

 #------------------------------------------------------------------------------

 

-.global ASM_PFX(InternalX86DisablePaging64)

+ASM_GLOBAL ASM_PFX(InternalX86DisablePaging64)

 ASM_PFX(InternalX86DisablePaging64):

     cli    

     shl    $0x20,%rcx                     # rcx[32..47] <- Cs

diff --git a/MdePkg/Library/BaseLib/X64/EnableDisableInterrupts.S b/MdePkg/Library/BaseLib/X64/EnableDisableInterrupts.S
index 22f029cddc..b3eb1218ff 100644
--- a/MdePkg/Library/BaseLib/X64/EnableDisableInterrupts.S
+++ b/MdePkg/Library/BaseLib/X64/EnableDisableInterrupts.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(EnableDisableInterrupts)

+ASM_GLOBAL ASM_PFX(EnableDisableInterrupts)

 .align 16

 ASM_PFX(EnableDisableInterrupts):

     sti

diff --git a/MdePkg/Library/BaseLib/X64/EnableInterrupts.S b/MdePkg/Library/BaseLib/X64/EnableInterrupts.S
index 77a547193e..86a3b14f4c 100644
--- a/MdePkg/Library/BaseLib/X64/EnableInterrupts.S
+++ b/MdePkg/Library/BaseLib/X64/EnableInterrupts.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(EnableInterrupts)

+ASM_GLOBAL ASM_PFX(EnableInterrupts)

 ASM_PFX(EnableInterrupts):

     sti

     ret

diff --git a/MdePkg/Library/BaseLib/X64/FlushCacheLine.S b/MdePkg/Library/BaseLib/X64/FlushCacheLine.S
index ad79ec1724..ffaca31acf 100644
--- a/MdePkg/Library/BaseLib/X64/FlushCacheLine.S
+++ b/MdePkg/Library/BaseLib/X64/FlushCacheLine.S
@@ -29,7 +29,7 @@
 #   IN      VOID                      *LinearAddress

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmFlushCacheLine)

+ASM_GLOBAL ASM_PFX(AsmFlushCacheLine)

 ASM_PFX(AsmFlushCacheLine):

     clflush (%rcx)

     mov     %rcx, %rax

diff --git a/MdePkg/Library/BaseLib/X64/FxRestore.S b/MdePkg/Library/BaseLib/X64/FxRestore.S
index e38549fc87..d7e1521820 100644
--- a/MdePkg/Library/BaseLib/X64/FxRestore.S
+++ b/MdePkg/Library/BaseLib/X64/FxRestore.S
@@ -29,7 +29,7 @@
 #   IN CONST IA32_FX_BUFFER *Buffer

 #   )#

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalX86FxRestore)

+ASM_GLOBAL ASM_PFX(InternalX86FxRestore)

 ASM_PFX(InternalX86FxRestore):

     fxrstor (%rcx)

     ret

diff --git a/MdePkg/Library/BaseLib/X64/FxSave.S b/MdePkg/Library/BaseLib/X64/FxSave.S
index f98320b82d..961e46e316 100644
--- a/MdePkg/Library/BaseLib/X64/FxSave.S
+++ b/MdePkg/Library/BaseLib/X64/FxSave.S
@@ -29,7 +29,7 @@
 #   OUT IA32_FX_BUFFER *Buffer

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalX86FxSave)

+ASM_GLOBAL ASM_PFX(InternalX86FxSave)

 ASM_PFX(InternalX86FxSave):

     fxsave  (%rcx)

     ret

diff --git a/MdePkg/Library/BaseLib/X64/Invd.S b/MdePkg/Library/BaseLib/X64/Invd.S
index 512fc86eeb..6a10686447 100644
--- a/MdePkg/Library/BaseLib/X64/Invd.S
+++ b/MdePkg/Library/BaseLib/X64/Invd.S
@@ -29,7 +29,7 @@
 #   VOID

 #   )#

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmInvd)

+ASM_GLOBAL ASM_PFX(AsmInvd)

 ASM_PFX(AsmInvd):

     invd

     ret

diff --git a/MdePkg/Library/BaseLib/X64/LongJump.S b/MdePkg/Library/BaseLib/X64/LongJump.S
index ee840c07fb..d43fcf000f 100644
--- a/MdePkg/Library/BaseLib/X64/LongJump.S
+++ b/MdePkg/Library/BaseLib/X64/LongJump.S
@@ -27,7 +27,7 @@
 #   IN      UINTN                     Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalLongJump)

+ASM_GLOBAL ASM_PFX(InternalLongJump)

 ASM_PFX(InternalLongJump):

     mov     (%rcx), %rbx

     mov     0x8(%rcx), %rsp

diff --git a/MdePkg/Library/BaseLib/X64/Monitor.S b/MdePkg/Library/BaseLib/X64/Monitor.S
index 1581598c45..0be3b981f3 100644
--- a/MdePkg/Library/BaseLib/X64/Monitor.S
+++ b/MdePkg/Library/BaseLib/X64/Monitor.S
@@ -31,7 +31,7 @@
 #   IN      UINTN                     Edx

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmMonitor)

+ASM_GLOBAL ASM_PFX(AsmMonitor)

 .align 16

 ASM_PFX(AsmMonitor):

     mov    %ecx,%eax

diff --git a/MdePkg/Library/BaseLib/X64/Mwait.S b/MdePkg/Library/BaseLib/X64/Mwait.S
index 9226ce3610..403ed26c48 100644
--- a/MdePkg/Library/BaseLib/X64/Mwait.S
+++ b/MdePkg/Library/BaseLib/X64/Mwait.S
@@ -30,7 +30,7 @@
 #   IN      UINTN                     Ecx

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmMwait)

+ASM_GLOBAL ASM_PFX(AsmMwait)

 .align 16

 ASM_PFX(AsmMwait):

     mov    %ecx,%eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadCr0.S b/MdePkg/Library/BaseLib/X64/ReadCr0.S
index 0c858e4955..23d375de4e 100644
--- a/MdePkg/Library/BaseLib/X64/ReadCr0.S
+++ b/MdePkg/Library/BaseLib/X64/ReadCr0.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadCr0)

+ASM_GLOBAL ASM_PFX(AsmReadCr0)

 .align 16

 ASM_PFX(AsmReadCr0):

     mov     %cr0, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadCr2.S b/MdePkg/Library/BaseLib/X64/ReadCr2.S
index 665a401b7c..26c2c2f271 100644
--- a/MdePkg/Library/BaseLib/X64/ReadCr2.S
+++ b/MdePkg/Library/BaseLib/X64/ReadCr2.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadCr2)

+ASM_GLOBAL ASM_PFX(AsmReadCr2)

 .align 16

 ASM_PFX(AsmReadCr2):

     mov     %cr2, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadCr3.S b/MdePkg/Library/BaseLib/X64/ReadCr3.S
index 5c80c1a634..1161eb2bd6 100644
--- a/MdePkg/Library/BaseLib/X64/ReadCr3.S
+++ b/MdePkg/Library/BaseLib/X64/ReadCr3.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadCr3)

+ASM_GLOBAL ASM_PFX(AsmReadCr3)

 .align 16

 ASM_PFX(AsmReadCr3):

     mov     %cr3, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadCr4.S b/MdePkg/Library/BaseLib/X64/ReadCr4.S
index 8de29bd6cd..192480d019 100644
--- a/MdePkg/Library/BaseLib/X64/ReadCr4.S
+++ b/MdePkg/Library/BaseLib/X64/ReadCr4.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadCr4)

+ASM_GLOBAL ASM_PFX(AsmReadCr4)

 .align 16

 ASM_PFX(AsmReadCr4):

     mov     %cr4, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadCs.S b/MdePkg/Library/BaseLib/X64/ReadCs.S
index 85654c2e24..7bb98dfb7b 100644
--- a/MdePkg/Library/BaseLib/X64/ReadCs.S
+++ b/MdePkg/Library/BaseLib/X64/ReadCs.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadCs)

+ASM_GLOBAL ASM_PFX(AsmReadCs)

 .align 16

 ASM_PFX(AsmReadCs):

     mov     %cs, %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr0.S b/MdePkg/Library/BaseLib/X64/ReadDr0.S
index 4e1cf5fb18..e4fb3b3f56 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr0.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr0.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr0)

+ASM_GLOBAL ASM_PFX(AsmReadDr0)

 .align 16

 ASM_PFX(AsmReadDr0):

     mov     %dr0, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr1.S b/MdePkg/Library/BaseLib/X64/ReadDr1.S
index d45a18dee7..e5c1cc8688 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr1.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr1.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr1)

+ASM_GLOBAL ASM_PFX(AsmReadDr1)

 .align 16

 ASM_PFX(AsmReadDr1):

     mov     %dr1, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr2.S b/MdePkg/Library/BaseLib/X64/ReadDr2.S
index 073f903e39..9ef017d3e7 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr2.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr2.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr2)

+ASM_GLOBAL ASM_PFX(AsmReadDr2)

 .align 16

 ASM_PFX(AsmReadDr2):

     mov     %dr2, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr3.S b/MdePkg/Library/BaseLib/X64/ReadDr3.S
index ebd90c9026..277a99936e 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr3.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr3.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr3)

+ASM_GLOBAL ASM_PFX(AsmReadDr3)

 .align 16

 ASM_PFX(AsmReadDr3):

     mov     %dr3, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr4.S b/MdePkg/Library/BaseLib/X64/ReadDr4.S
index 752a04cfa1..5f5651fd35 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr4.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr4.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr4)

+ASM_GLOBAL ASM_PFX(AsmReadDr4)

 .align 16

 ASM_PFX(AsmReadDr4):

     #DB      0fh, 21h, 0e0h

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr5.S b/MdePkg/Library/BaseLib/X64/ReadDr5.S
index 42a5ed3e76..766fc45700 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr5.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr5.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr5)

+ASM_GLOBAL ASM_PFX(AsmReadDr5)

 .align 16

 ASM_PFX(AsmReadDr5):

     mov %dr5, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr6.S b/MdePkg/Library/BaseLib/X64/ReadDr6.S
index 6186d497ae..0bde38cca5 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr6.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr6.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr6)

+ASM_GLOBAL ASM_PFX(AsmReadDr6)

 .align 16

 ASM_PFX(AsmReadDr6):

     mov %dr6, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDr7.S b/MdePkg/Library/BaseLib/X64/ReadDr7.S
index c43c7d4507..3de98eb7f0 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDr7.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDr7.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDr7)

+ASM_GLOBAL ASM_PFX(AsmReadDr7)

 .align 16

 ASM_PFX(AsmReadDr7):

     mov %dr7, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadDs.S b/MdePkg/Library/BaseLib/X64/ReadDs.S
index bd28aa9313..119da00818 100644
--- a/MdePkg/Library/BaseLib/X64/ReadDs.S
+++ b/MdePkg/Library/BaseLib/X64/ReadDs.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadDs)

+ASM_GLOBAL ASM_PFX(AsmReadDs)

 .align 16

 ASM_PFX(AsmReadDs):

     movl  %ds, %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadEflags.S b/MdePkg/Library/BaseLib/X64/ReadEflags.S
index 3be5d7ab7b..c90d516138 100644
--- a/MdePkg/Library/BaseLib/X64/ReadEflags.S
+++ b/MdePkg/Library/BaseLib/X64/ReadEflags.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadEflags)

+ASM_GLOBAL ASM_PFX(AsmReadEflags)

 .align 16

 ASM_PFX(AsmReadEflags):

     pushfq

diff --git a/MdePkg/Library/BaseLib/X64/ReadEs.S b/MdePkg/Library/BaseLib/X64/ReadEs.S
index 9a45439e14..a75b95f953 100644
--- a/MdePkg/Library/BaseLib/X64/ReadEs.S
+++ b/MdePkg/Library/BaseLib/X64/ReadEs.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadEs)

+ASM_GLOBAL ASM_PFX(AsmReadEs)

 .align 16

 ASM_PFX(AsmReadEs):

     mov     %es, %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadFs.S b/MdePkg/Library/BaseLib/X64/ReadFs.S
index 74637b3dbf..5b26d5e574 100644
--- a/MdePkg/Library/BaseLib/X64/ReadFs.S
+++ b/MdePkg/Library/BaseLib/X64/ReadFs.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadFs)

+ASM_GLOBAL ASM_PFX(AsmReadFs)

 .align 16

 ASM_PFX(AsmReadFs):

     mov     %fs, %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadGdtr.S b/MdePkg/Library/BaseLib/X64/ReadGdtr.S
index c57ef3e89e..889efeb61d 100644
--- a/MdePkg/Library/BaseLib/X64/ReadGdtr.S
+++ b/MdePkg/Library/BaseLib/X64/ReadGdtr.S
@@ -29,7 +29,7 @@
 #   OUT IA32_DESCRIPTOR  *Gdtr

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalX86ReadGdtr)

+ASM_GLOBAL ASM_PFX(InternalX86ReadGdtr)

 .align 16

 ASM_PFX(InternalX86ReadGdtr):

     sgdt  (%rcx)

diff --git a/MdePkg/Library/BaseLib/X64/ReadGs.S b/MdePkg/Library/BaseLib/X64/ReadGs.S
index b89bb3b4ff..a89b27dc1f 100644
--- a/MdePkg/Library/BaseLib/X64/ReadGs.S
+++ b/MdePkg/Library/BaseLib/X64/ReadGs.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadGs)

+ASM_GLOBAL ASM_PFX(AsmReadGs)

 .align 16

 ASM_PFX(AsmReadGs):

     mov     %gs, %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadIdtr.S b/MdePkg/Library/BaseLib/X64/ReadIdtr.S
index 84cbab4105..efdaf77a87 100644
--- a/MdePkg/Library/BaseLib/X64/ReadIdtr.S
+++ b/MdePkg/Library/BaseLib/X64/ReadIdtr.S
@@ -29,7 +29,7 @@
 #   OUT     IA32_DESCRIPTOR           *Idtr

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalX86ReadIdtr)

+ASM_GLOBAL ASM_PFX(InternalX86ReadIdtr)

 .align 16

 ASM_PFX(InternalX86ReadIdtr):

     sidt    (%rcx)

diff --git a/MdePkg/Library/BaseLib/X64/ReadLdtr.S b/MdePkg/Library/BaseLib/X64/ReadLdtr.S
index 4d5a43cd09..6e7e0a3e31 100644
--- a/MdePkg/Library/BaseLib/X64/ReadLdtr.S
+++ b/MdePkg/Library/BaseLib/X64/ReadLdtr.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadLdtr)

+ASM_GLOBAL ASM_PFX(AsmReadLdtr)

 .align 16

 ASM_PFX(AsmReadLdtr):

     sldt    %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm0.S b/MdePkg/Library/BaseLib/X64/ReadMm0.S
index 57c91da85f..dd259ed915 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm0.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm0.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm0)

+ASM_GLOBAL ASM_PFX(AsmReadMm0)

 .align 16

 ASM_PFX(AsmReadMm0):

     movd  %mm0, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm1.S b/MdePkg/Library/BaseLib/X64/ReadMm1.S
index 45ef7f8a55..b3eed9fa2b 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm1.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm1.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm1)

+ASM_GLOBAL ASM_PFX(AsmReadMm1)

 .align 16

 ASM_PFX(AsmReadMm1):

     movd  %mm1, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm2.S b/MdePkg/Library/BaseLib/X64/ReadMm2.S
index d0cdf19b71..2459fcd55c 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm2.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm2.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm2)

+ASM_GLOBAL ASM_PFX(AsmReadMm2)

 .align 16

 ASM_PFX(AsmReadMm2):

     movd  %mm2, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm3.S b/MdePkg/Library/BaseLib/X64/ReadMm3.S
index c1d7fd9e5b..0cf5bc7937 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm3.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm3.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm3)

+ASM_GLOBAL ASM_PFX(AsmReadMm3)

 .align 16

 ASM_PFX(AsmReadMm3):

     movd  %mm3, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm4.S b/MdePkg/Library/BaseLib/X64/ReadMm4.S
index dafeca484c..fad10ae3b6 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm4.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm4.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm4)

+ASM_GLOBAL ASM_PFX(AsmReadMm4)

 .align 16

 ASM_PFX(AsmReadMm4):

     movd  %mm4, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm5.S b/MdePkg/Library/BaseLib/X64/ReadMm5.S
index 26d83631af..03629d5756 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm5.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm5.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm5)

+ASM_GLOBAL ASM_PFX(AsmReadMm5)

 .align 16

 ASM_PFX(AsmReadMm5):

     movd  %mm5, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm6.S b/MdePkg/Library/BaseLib/X64/ReadMm6.S
index a8ea02226b..f496d3be4b 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm6.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm6.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm6)

+ASM_GLOBAL ASM_PFX(AsmReadMm6)

 .align 16

 ASM_PFX(AsmReadMm6):

     movd  %mm6, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm7.S b/MdePkg/Library/BaseLib/X64/ReadMm7.S
index 1f273670fd..aa6bb0fca3 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMm7.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMm7.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMm7)

+ASM_GLOBAL ASM_PFX(AsmReadMm7)

 .align 16

 ASM_PFX(AsmReadMm7):

     movd  %mm7, %rax

diff --git a/MdePkg/Library/BaseLib/X64/ReadMsr64.S b/MdePkg/Library/BaseLib/X64/ReadMsr64.S
index 8c7ec3b828..32be9dc7d5 100644
--- a/MdePkg/Library/BaseLib/X64/ReadMsr64.S
+++ b/MdePkg/Library/BaseLib/X64/ReadMsr64.S
@@ -29,7 +29,7 @@
 #   IN UINT32  Index

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadMsr64)

+ASM_GLOBAL ASM_PFX(AsmReadMsr64)

 .align 16

 ASM_PFX(AsmReadMsr64):

     rdmsr                               # edx & eax are zero extended

diff --git a/MdePkg/Library/BaseLib/X64/ReadPmc.S b/MdePkg/Library/BaseLib/X64/ReadPmc.S
index f88061809e..66ced6541b 100644
--- a/MdePkg/Library/BaseLib/X64/ReadPmc.S
+++ b/MdePkg/Library/BaseLib/X64/ReadPmc.S
@@ -29,7 +29,7 @@
 #   IN UINT32   PmcIndex

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadPmc)

+ASM_GLOBAL ASM_PFX(AsmReadPmc)

 .align 16

 ASM_PFX(AsmReadPmc):

     rdpmc

diff --git a/MdePkg/Library/BaseLib/X64/ReadSs.S b/MdePkg/Library/BaseLib/X64/ReadSs.S
index 127d75f974..ea7e2e2c1f 100644
--- a/MdePkg/Library/BaseLib/X64/ReadSs.S
+++ b/MdePkg/Library/BaseLib/X64/ReadSs.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadSs)

+ASM_GLOBAL ASM_PFX(AsmReadSs)

 .align 16

 ASM_PFX(AsmReadSs):

     movl     %ss, %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadTr.S b/MdePkg/Library/BaseLib/X64/ReadTr.S
index 7bf34d2f6d..2dee7296a7 100644
--- a/MdePkg/Library/BaseLib/X64/ReadTr.S
+++ b/MdePkg/Library/BaseLib/X64/ReadTr.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadTr)

+ASM_GLOBAL ASM_PFX(AsmReadTr)

 .align 16

 ASM_PFX(AsmReadTr): 

     str     %eax

diff --git a/MdePkg/Library/BaseLib/X64/ReadTsc.S b/MdePkg/Library/BaseLib/X64/ReadTsc.S
index d472a5364c..f3c45b5580 100644
--- a/MdePkg/Library/BaseLib/X64/ReadTsc.S
+++ b/MdePkg/Library/BaseLib/X64/ReadTsc.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmReadTsc)

+ASM_GLOBAL ASM_PFX(AsmReadTsc)

 .align 16

 ASM_PFX(AsmReadTsc):

     rdtsc

diff --git a/MdePkg/Library/BaseLib/X64/SetJump.S b/MdePkg/Library/BaseLib/X64/SetJump.S
index 597a2662ae..d8454d3965 100644
--- a/MdePkg/Library/BaseLib/X64/SetJump.S
+++ b/MdePkg/Library/BaseLib/X64/SetJump.S
@@ -19,8 +19,7 @@
 #

 #------------------------------------------------------------------------------

 

-.extern ASM_PFX(InternalAssertJumpBuffer)

-.global ASM_PFX(SetJump)

+ASM_GLOBAL ASM_PFX(SetJump)

 ASM_PFX(SetJump):

     push   %rcx

     add    $0xffffffffffffffe0,%rsp

diff --git a/MdePkg/Library/BaseLib/X64/SwitchStack.S b/MdePkg/Library/BaseLib/X64/SwitchStack.S
index e75ddaf965..e5b9e54ce5 100644
--- a/MdePkg/Library/BaseLib/X64/SwitchStack.S
+++ b/MdePkg/Library/BaseLib/X64/SwitchStack.S
@@ -35,7 +35,7 @@
 #   None

 #

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalSwitchStack)

+ASM_GLOBAL ASM_PFX(InternalSwitchStack)

 ASM_PFX(InternalSwitchStack):

     mov     %rcx, %rax

     mov     %rdx, %rcx

diff --git a/MdePkg/Library/BaseLib/X64/Wbinvd.S b/MdePkg/Library/BaseLib/X64/Wbinvd.S
index 492c312b92..e05301d915 100644
--- a/MdePkg/Library/BaseLib/X64/Wbinvd.S
+++ b/MdePkg/Library/BaseLib/X64/Wbinvd.S
@@ -29,7 +29,7 @@
 #   VOID

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWbinvd)

+ASM_GLOBAL ASM_PFX(AsmWbinvd)

 .align 16

 ASM_PFX(AsmWbinvd):

     wbinvd

diff --git a/MdePkg/Library/BaseLib/X64/WriteCr0.S b/MdePkg/Library/BaseLib/X64/WriteCr0.S
index 28606cf5e2..a8078fae7a 100644
--- a/MdePkg/Library/BaseLib/X64/WriteCr0.S
+++ b/MdePkg/Library/BaseLib/X64/WriteCr0.S
@@ -29,7 +29,7 @@
 #   UINTN  Cr0

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteCr0)

+ASM_GLOBAL ASM_PFX(AsmWriteCr0)

 ASM_PFX(AsmWriteCr0):

     mov    %rcx,%cr0

     mov    %rcx,%rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteCr2.S b/MdePkg/Library/BaseLib/X64/WriteCr2.S
index 5556cd376f..b08a4e36ba 100644
--- a/MdePkg/Library/BaseLib/X64/WriteCr2.S
+++ b/MdePkg/Library/BaseLib/X64/WriteCr2.S
@@ -29,7 +29,7 @@
 #   UINTN  Cr2

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteCr2)

+ASM_GLOBAL ASM_PFX(AsmWriteCr2)

 ASM_PFX(AsmWriteCr2):

     mov    %rcx,%cr2

     mov    %rcx,%rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteCr3.S b/MdePkg/Library/BaseLib/X64/WriteCr3.S
index 1016ae46f2..756e97cfaf 100644
--- a/MdePkg/Library/BaseLib/X64/WriteCr3.S
+++ b/MdePkg/Library/BaseLib/X64/WriteCr3.S
@@ -29,7 +29,7 @@
 #   UINTN  Cr3

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteCr3)

+ASM_GLOBAL ASM_PFX(AsmWriteCr3)

 ASM_PFX(AsmWriteCr3):

     mov    %rcx,%cr3

     mov    %rcx,%rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteCr4.S b/MdePkg/Library/BaseLib/X64/WriteCr4.S
index 04ee1b02e7..ef6a53925d 100644
--- a/MdePkg/Library/BaseLib/X64/WriteCr4.S
+++ b/MdePkg/Library/BaseLib/X64/WriteCr4.S
@@ -29,7 +29,7 @@
 #   UINTN  Cr4

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteCr4)

+ASM_GLOBAL ASM_PFX(AsmWriteCr4)

 ASM_PFX(AsmWriteCr4):

     mov    %rcx,%cr4

     mov    %rcx,%rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr0.S b/MdePkg/Library/BaseLib/X64/WriteDr0.S
index 250e5e347a..6b1d1bf19e 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr0.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr0.S
@@ -29,7 +29,7 @@
 #   UINTN  Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr0)

+ASM_GLOBAL ASM_PFX(AsmWriteDr0)

 .align 16

 ASM_PFX(AsmWriteDr0):

     mov     %rcx, %dr0

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr1.S b/MdePkg/Library/BaseLib/X64/WriteDr1.S
index b9805efb93..297217b459 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr1.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr1.S
@@ -29,7 +29,7 @@
 #   UINTN  Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr1)

+ASM_GLOBAL ASM_PFX(AsmWriteDr1)

 .align 16

 ASM_PFX(AsmWriteDr1):

     mov     %rcx, %dr1

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr2.S b/MdePkg/Library/BaseLib/X64/WriteDr2.S
index c82705f833..92c0850775 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr2.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr2.S
@@ -29,7 +29,7 @@
 #   UINTN  Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr2)

+ASM_GLOBAL ASM_PFX(AsmWriteDr2)

 .align 16

 ASM_PFX(AsmWriteDr2):

     mov     %rcx, %dr2

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr3.S b/MdePkg/Library/BaseLib/X64/WriteDr3.S
index 823dfafa2a..b64b977504 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr3.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr3.S
@@ -29,7 +29,7 @@
 #   UINTN  Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr3)

+ASM_GLOBAL ASM_PFX(AsmWriteDr3)

 .align 16

 ASM_PFX(AsmWriteDr3):

     mov     %rcx, %dr3

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr4.S b/MdePkg/Library/BaseLib/X64/WriteDr4.S
index b340d2d4a1..22f503db64 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr4.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr4.S
@@ -29,7 +29,7 @@
 #   IN UINTN Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr4)

+ASM_GLOBAL ASM_PFX(AsmWriteDr4)

 ASM_PFX(AsmWriteDr4):

     mov     %rcx, %dr4

     mov     %rcx, %rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr5.S b/MdePkg/Library/BaseLib/X64/WriteDr5.S
index ac765d7c22..7beb726c1e 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr5.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr5.S
@@ -29,7 +29,7 @@
 #   IN UINTN Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr5)

+ASM_GLOBAL ASM_PFX(AsmWriteDr5)

 ASM_PFX(AsmWriteDr5):

     mov     %rcx, %dr5

     mov     %rcx, %rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr6.S b/MdePkg/Library/BaseLib/X64/WriteDr6.S
index f0bd42c44a..c5c6430dcd 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr6.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr6.S
@@ -29,7 +29,7 @@
 #   IN UINTN Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr6)

+ASM_GLOBAL ASM_PFX(AsmWriteDr6)

 ASM_PFX(AsmWriteDr6):

     mov     %rcx, %dr6

     mov     %rcx, %rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr7.S b/MdePkg/Library/BaseLib/X64/WriteDr7.S
index f1d98232a4..616b9c1db2 100644
--- a/MdePkg/Library/BaseLib/X64/WriteDr7.S
+++ b/MdePkg/Library/BaseLib/X64/WriteDr7.S
@@ -29,7 +29,7 @@
 #   IN UINTN Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteDr7)

+ASM_GLOBAL ASM_PFX(AsmWriteDr7)

 ASM_PFX(AsmWriteDr7):

     mov     %rcx, %dr7

     mov     %rcx, %rax

diff --git a/MdePkg/Library/BaseLib/X64/WriteGdtr.S b/MdePkg/Library/BaseLib/X64/WriteGdtr.S
index d517930918..6f48f50d37 100644
--- a/MdePkg/Library/BaseLib/X64/WriteGdtr.S
+++ b/MdePkg/Library/BaseLib/X64/WriteGdtr.S
@@ -29,7 +29,7 @@
 #   IN      CONST IA32_DESCRIPTOR     *Idtr

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalX86WriteGdtr)

+ASM_GLOBAL ASM_PFX(InternalX86WriteGdtr)

 ASM_PFX(InternalX86WriteGdtr):

     lgdt    (%rcx)

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteIdtr.S b/MdePkg/Library/BaseLib/X64/WriteIdtr.S
index cafd3de0d0..e8e332e9b2 100644
--- a/MdePkg/Library/BaseLib/X64/WriteIdtr.S
+++ b/MdePkg/Library/BaseLib/X64/WriteIdtr.S
@@ -29,7 +29,7 @@
 #   IN      CONST IA32_DESCRIPTOR     *Idtr

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(InternalX86WriteIdtr)

+ASM_GLOBAL ASM_PFX(InternalX86WriteIdtr)

 .align 16

 ASM_PFX(InternalX86WriteIdtr):

     lidt    (%rcx)

diff --git a/MdePkg/Library/BaseLib/X64/WriteLdtr.S b/MdePkg/Library/BaseLib/X64/WriteLdtr.S
index cefcd774b7..ebc0172150 100644
--- a/MdePkg/Library/BaseLib/X64/WriteLdtr.S
+++ b/MdePkg/Library/BaseLib/X64/WriteLdtr.S
@@ -29,7 +29,7 @@
 #   IN UINT16 Ldtr

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteLdtr)

+ASM_GLOBAL ASM_PFX(AsmWriteLdtr)

 .align 16

 ASM_PFX(AsmWriteLdtr):

     lldt    %cx

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm0.S b/MdePkg/Library/BaseLib/X64/WriteMm0.S
index 1eeb502a5e..e24a62a226 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm0.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm0.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm0)

+ASM_GLOBAL ASM_PFX(AsmWriteMm0)

 ASM_PFX(AsmWriteMm0):

     movd  %rcx, %mm0

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm1.S b/MdePkg/Library/BaseLib/X64/WriteMm1.S
index b0a744db39..163e1674b4 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm1.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm1.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm1)

+ASM_GLOBAL ASM_PFX(AsmWriteMm1)

 ASM_PFX(AsmWriteMm1):

     movd  %rcx, %mm1

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm2.S b/MdePkg/Library/BaseLib/X64/WriteMm2.S
index b9b438b325..e5cfe11de5 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm2.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm2.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm2) 

+ASM_GLOBAL ASM_PFX(AsmWriteMm2) 

 ASM_PFX(AsmWriteMm2):

     movd  %rcx, %mm2

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm3.S b/MdePkg/Library/BaseLib/X64/WriteMm3.S
index 5a567156c0..c576e46bc7 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm3.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm3.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm3)

+ASM_GLOBAL ASM_PFX(AsmWriteMm3)

 ASM_PFX(AsmWriteMm3):

     movd  %rcx, %mm3

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm4.S b/MdePkg/Library/BaseLib/X64/WriteMm4.S
index dc82695de8..24ecbc11c2 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm4.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm4.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm4)

+ASM_GLOBAL ASM_PFX(AsmWriteMm4)

 ASM_PFX(AsmWriteMm4):

     movd  %rcx, %mm4

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm5.S b/MdePkg/Library/BaseLib/X64/WriteMm5.S
index 1d82235045..c1e0e7c2c3 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm5.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm5.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm5)

+ASM_GLOBAL ASM_PFX(AsmWriteMm5)

 ASM_PFX(AsmWriteMm5):

     movd  %rcx, %mm5

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm6.S b/MdePkg/Library/BaseLib/X64/WriteMm6.S
index 01e53dbce7..c5a216d29f 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm6.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm6.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm6)

+ASM_GLOBAL ASM_PFX(AsmWriteMm6)

 ASM_PFX(AsmWriteMm6):

     movd  %rcx, %mm6

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm7.S b/MdePkg/Library/BaseLib/X64/WriteMm7.S
index 6b8346fb44..b6e6503551 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMm7.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMm7.S
@@ -29,7 +29,7 @@
 #   IN UINT64   Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMm7)

+ASM_GLOBAL ASM_PFX(AsmWriteMm7)

 ASM_PFX(AsmWriteMm7):

     movd  %rcx, %mm7

     ret

diff --git a/MdePkg/Library/BaseLib/X64/WriteMsr64.S b/MdePkg/Library/BaseLib/X64/WriteMsr64.S
index a034efe070..dd2bc3ddbc 100644
--- a/MdePkg/Library/BaseLib/X64/WriteMsr64.S
+++ b/MdePkg/Library/BaseLib/X64/WriteMsr64.S
@@ -30,7 +30,7 @@
 #   IN UINT64  Value

 #   );

 #------------------------------------------------------------------------------

-.global ASM_PFX(AsmWriteMsr64)

+ASM_GLOBAL ASM_PFX(AsmWriteMsr64)

 .align 16

 ASM_PFX(AsmWriteMsr64):

     mov %rdx, %rax            # meanwhile, rax <- return value