diff --git a/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S b/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S
index 86c536b669..5498d2e991 100644
--- a/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathARShiftU64
+.globl ASM_PFX(InternalMathARShiftU64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -29,7 +29,7 @@
 #   IN      UINTN                     Count
 #   );
 #------------------------------------------------------------------------------
-_InternalMathARShiftU64:
+ASM_PFX(InternalMathARShiftU64):
     movb    12(%esp), %cl
     movl    8(%esp), %eax
     cltd
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuBreakpoint.S b/MdePkg/Library/BaseLib/Ia32/CpuBreakpoint.S
index 17880f4803..e82434b670 100644
--- a/MdePkg/Library/BaseLib/Ia32/CpuBreakpoint.S
+++ b/MdePkg/Library/BaseLib/Ia32/CpuBreakpoint.S
@@ -20,7 +20,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _CpuBreakpoint
+.globl ASM_PFX(CpuBreakpoint)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -29,6 +29,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_CpuBreakpoint:
+ASM_PFX(CpuBreakpoint):
     int  $3
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuFlushTlb.S b/MdePkg/Library/BaseLib/Ia32/CpuFlushTlb.S
index 0bd308d344..f8b1cdc7ee 100644
--- a/MdePkg/Library/BaseLib/Ia32/CpuFlushTlb.S
+++ b/MdePkg/Library/BaseLib/Ia32/CpuFlushTlb.S
@@ -20,7 +20,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _CpuFlushTlb
+.globl ASM_PFX(CpuFlushTlb)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -29,7 +29,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_CpuFlushTlb:
+ASM_PFX(CpuFlushTlb):
     movl    %cr3, %eax
     movl    %eax, %cr3
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuId.S b/MdePkg/Library/BaseLib/Ia32/CpuId.S
index 592ade651a..6f41e72227 100644
--- a/MdePkg/Library/BaseLib/Ia32/CpuId.S
+++ b/MdePkg/Library/BaseLib/Ia32/CpuId.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl  _AsmCpuid
+.globl  ASM_PFX(AsmCpuid)
 
 #------------------------------------------------------------------------------
 #  VOID
@@ -34,7 +34,7 @@
 #    OUT  UINT32  *RegisterOutEdx  OPTIONAL
 #    )
 #------------------------------------------------------------------------------
-_AsmCpuid:
+ASM_PFX(AsmCpuid):
     push    %ebx
     push    %ebp
     movl    %esp, %ebp
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S b/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S
index ab66fe75b2..48554cc96b 100644
--- a/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S
+++ b/MdePkg/Library/BaseLib/Ia32/CpuIdEx.S
@@ -36,8 +36,8 @@
 #    OUT  UINT32  *RegisterOutEdx  OPTIONAL
 #    )
 #------------------------------------------------------------------------------
-.globl _AsmCpuidEx
-_AsmCpuidEx:
+.globl ASM_PFX(AsmCpuidEx)
+ASM_PFX(AsmCpuidEx):
     push    %ebx
     push    %ebp
     movl    %esp, %ebp
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuPause.S b/MdePkg/Library/BaseLib/Ia32/CpuPause.S
index e9bf413cb6..5fef9c8d5c 100644
--- a/MdePkg/Library/BaseLib/Ia32/CpuPause.S
+++ b/MdePkg/Library/BaseLib/Ia32/CpuPause.S
@@ -20,7 +20,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _CpuPause
+.globl ASM_PFX(CpuPause)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -29,6 +29,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_CpuPause:
+ASM_PFX(CpuPause):
     pause
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/CpuSleep.S b/MdePkg/Library/BaseLib/Ia32/CpuSleep.S
index 3bd1736250..ac39e8fcba 100644
--- a/MdePkg/Library/BaseLib/Ia32/CpuSleep.S
+++ b/MdePkg/Library/BaseLib/Ia32/CpuSleep.S
@@ -20,7 +20,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _CpuSleep
+.globl ASM_PFX(CpuSleep)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -29,6 +29,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_CpuSleep:
+ASM_PFX(CpuSleep):
     hlt
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/DisableInterrupts.S b/MdePkg/Library/BaseLib/Ia32/DisableInterrupts.S
index aa5111f5f6..ea04225fd6 100644
--- a/MdePkg/Library/BaseLib/Ia32/DisableInterrupts.S
+++ b/MdePkg/Library/BaseLib/Ia32/DisableInterrupts.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _DisableInterrupts
+.globl ASM_PFX(DisableInterrupts)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_DisableInterrupts:
+ASM_PFX(DisableInterrupts):
     cli
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/DisablePaging32.S b/MdePkg/Library/BaseLib/Ia32/DisablePaging32.S
index c250004a41..7898e8103a 100644
--- a/MdePkg/Library/BaseLib/Ia32/DisablePaging32.S
+++ b/MdePkg/Library/BaseLib/Ia32/DisablePaging32.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86DisablePaging32
+.globl ASM_PFX(InternalX86DisablePaging32)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -33,7 +33,7 @@
 #   IN      VOID                      *NewStack
 #   );
 #------------------------------------------------------------------------------
-_InternalX86DisablePaging32:
+ASM_PFX(InternalX86DisablePaging32):
     movl    4(%esp), %ebx
     movl    8(%esp), %ecx
     movl    12(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/DivU64x32.S b/MdePkg/Library/BaseLib/Ia32/DivU64x32.S
index 158b382a4a..b858278e64 100644
--- a/MdePkg/Library/BaseLib/Ia32/DivU64x32.S
+++ b/MdePkg/Library/BaseLib/Ia32/DivU64x32.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathDivU64x32
+.globl ASM_PFX(InternalMathDivU64x32)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -29,7 +29,7 @@
 #   IN      UINT32                    Divisor
 #   );
 #------------------------------------------------------------------------------
-_InternalMathDivU64x32:
+ASM_PFX(InternalMathDivU64x32):
     movl    8(%esp), %eax
     movl    12(%esp), %ecx
     xorl    %edx, %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S b/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S
index 7c4bfb2512..974373d284 100644
--- a/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S
+++ b/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathDivRemU64x32
+.globl ASM_PFX(InternalMathDivRemU64x32)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -30,7 +30,7 @@
 #   OUT     UINT32                    *Remainder
 #   );
 #------------------------------------------------------------------------------
-_InternalMathDivRemU64x32:
+ASM_PFX(InternalMathDivRemU64x32):
     movl    12(%esp), %ecx
     movl    8(%esp), %eax
     xorl    %edx, %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/DivU64x64Remainder.S b/MdePkg/Library/BaseLib/Ia32/DivU64x64Remainder.S
index a122c70ab2..cac7169d58 100644
--- a/MdePkg/Library/BaseLib/Ia32/DivU64x64Remainder.S
+++ b/MdePkg/Library/BaseLib/Ia32/DivU64x64Remainder.S
@@ -20,7 +20,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathDivRemU64x32, _InternalMathDivRemU64x64
+.globl ASM_PFX(InternalMathDivRemU64x32), ASM_PFX(InternalMathDivRemU64x64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -31,7 +31,7 @@
 #   OUT     UINT64                    *Remainder    OPTIONAL
 #   );
 #------------------------------------------------------------------------------
-_InternalMathDivRemU64x64:
+ASM_PFX(InternalMathDivRemU64x64):
     movl    16(%esp), %ecx
     testl   %ecx, %ecx
     jnz     Hard
@@ -40,7 +40,7 @@ _InternalMathDivRemU64x64:
     and     $0, 4(%ecx)
     movl    %ecx, 16(%esp)
 L1:
-    jmp     _InternalMathDivRemU64x32
+    jmp     ASM_PFX(InternalMathDivRemU64x32)
 Hard:
     push    %ebx
     push    %esi
diff --git a/MdePkg/Library/BaseLib/Ia32/EnableDisableInterrupts.S b/MdePkg/Library/BaseLib/Ia32/EnableDisableInterrupts.S
index dcee379611..c5742aee53 100644
--- a/MdePkg/Library/BaseLib/Ia32/EnableDisableInterrupts.S
+++ b/MdePkg/Library/BaseLib/Ia32/EnableDisableInterrupts.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _EnableDisableInterrupts
+.globl ASM_PFX(EnableDisableInterrupts)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_EnableDisableInterrupts:
+ASM_PFX(EnableDisableInterrupts):
     sti
     cli
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/EnableInterrupts.S b/MdePkg/Library/BaseLib/Ia32/EnableInterrupts.S
index 8a40b3afc0..2d608036f7 100644
--- a/MdePkg/Library/BaseLib/Ia32/EnableInterrupts.S
+++ b/MdePkg/Library/BaseLib/Ia32/EnableInterrupts.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _EnableInterrupts
+.globl ASM_PFX(EnableInterrupts)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_EnableInterrupts:
+ASM_PFX(EnableInterrupts):
     sti
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/EnablePaging32.S b/MdePkg/Library/BaseLib/Ia32/EnablePaging32.S
index 39f991fe56..df5d67cfac 100644
--- a/MdePkg/Library/BaseLib/Ia32/EnablePaging32.S
+++ b/MdePkg/Library/BaseLib/Ia32/EnablePaging32.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86EnablePaging32
+.globl ASM_PFX(InternalX86EnablePaging32)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -33,7 +33,7 @@
 #   IN      VOID                      *NewStack
 #   );
 #------------------------------------------------------------------------------
-_InternalX86EnablePaging32:
+ASM_PFX(InternalX86EnablePaging32):
     movl    4(%esp), %ebx
     movl    8(%esp), %ecx
     movl    12(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S b/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S
index 89502b7ef5..ffa9beb0a1 100644
--- a/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S
+++ b/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86EnablePaging64
+.globl ASM_PFX(InternalX86EnablePaging64)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -34,7 +34,7 @@
 #   IN      UINT64                    NewStack
 #   );
 #------------------------------------------------------------------------------
-_InternalX86EnablePaging64:
+ASM_PFX(InternalX86EnablePaging64):
     cli
     movl    $LongStart, (%esp)
     movl    %cr4, %eax
diff --git a/MdePkg/Library/BaseLib/Ia32/FlushCacheLine.S b/MdePkg/Library/BaseLib/Ia32/FlushCacheLine.S
index f445464af9..07a92619d2 100644
--- a/MdePkg/Library/BaseLib/Ia32/FlushCacheLine.S
+++ b/MdePkg/Library/BaseLib/Ia32/FlushCacheLine.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmFlushCacheLine
+.globl ASM_PFX(AsmFlushCacheLine)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,7 +30,7 @@
 #   IN      VOID                      *LinearAddress
 #   );
 #------------------------------------------------------------------------------
-_AsmFlushCacheLine:
+ASM_PFX(AsmFlushCacheLine):
     movl    4(%esp), %eax
     clflush (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/FxRestore.S b/MdePkg/Library/BaseLib/Ia32/FxRestore.S
index f88d3df09b..9cfa14be0f 100644
--- a/MdePkg/Library/BaseLib/Ia32/FxRestore.S
+++ b/MdePkg/Library/BaseLib/Ia32/FxRestore.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86FxRestore
+.globl ASM_PFX(InternalX86FxRestore)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,7 +30,7 @@
 #   IN CONST IA32_FX_BUFFER *Buffer
 #   );
 #------------------------------------------------------------------------------
-_InternalX86FxRestore:
+ASM_PFX(InternalX86FxRestore):
     movl    4(%esp), %eax
     fxrstor (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/FxSave.S b/MdePkg/Library/BaseLib/Ia32/FxSave.S
index cdb808e3cd..8857a8ec77 100644
--- a/MdePkg/Library/BaseLib/Ia32/FxSave.S
+++ b/MdePkg/Library/BaseLib/Ia32/FxSave.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86FxSave
+.globl ASM_PFX(InternalX86FxSave)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,7 +30,7 @@
 #   OUT IA32_FX_BUFFER *Buffer
 #   );
 #------------------------------------------------------------------------------
-_InternalX86FxSave:
+ASM_PFX(InternalX86FxSave):
     movl    4(%esp), %eax
     fxsave  (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.S b/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.S
index f5acc82a95..a0a6ad9eb0 100644
--- a/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.S
+++ b/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalSyncCompareExchange32
+.globl ASM_PFX(InternalSyncCompareExchange32)
 
 #------------------------------------------------------------------------------
 # UINT32
@@ -32,7 +32,7 @@
 #   IN      UINT32                    ExchangeValue
 #   );
 #------------------------------------------------------------------------------
-_InternalSyncCompareExchange32:
+ASM_PFX(InternalSyncCompareExchange32):
     movl    4(%esp), %ecx
     movl    8(%esp), %eax
     movl    12(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.S b/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.S
index 32d3084806..98a20a5e29 100644
--- a/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.S
+++ b/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalSyncCompareExchange64
+.globl ASM_PFX(InternalSyncCompareExchange64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -32,7 +32,7 @@
 #   IN      UINT64                    ExchangeValue
 #   );
 #------------------------------------------------------------------------------
-_InternalSyncCompareExchange64:
+ASM_PFX(InternalSyncCompareExchange64):
     push    %esi
     push    %ebx
     movl    12(%esp), %esi
diff --git a/MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.S b/MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.S
index 1855732d51..dc8f7215cc 100644
--- a/MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.S
+++ b/MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalSyncDecrement
+.globl ASM_PFX(InternalSyncDecrement)
 
 #------------------------------------------------------------------------------
 # UINT32
@@ -30,7 +30,7 @@
 #   IN      UINT32                    *Value
 #   );
 #------------------------------------------------------------------------------
-_InternalSyncDecrement:
+ASM_PFX(InternalSyncDecrement):
     movl    4(%esp), %eax
     lock
     decl    (%eax)
diff --git a/MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.S b/MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.S
index 9bde4dc661..ecbbc7540c 100644
--- a/MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.S
+++ b/MdePkg/Library/BaseLib/Ia32/InterlockedIncrement.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalSyncIncrement
+.globl ASM_PFX(InternalSyncIncrement)
 
 #------------------------------------------------------------------------------
 # UINT32
@@ -30,7 +30,7 @@
 #   IN      UINT32                    *Value
 #   );
 #------------------------------------------------------------------------------
-_InternalSyncIncrement:
+ASM_PFX(InternalSyncIncrement):
     movl    4(%esp), %eax
     lock
     incl    (%eax)
diff --git a/MdePkg/Library/BaseLib/Ia32/Invd.S b/MdePkg/Library/BaseLib/Ia32/Invd.S
index 97c4934af5..0a0c1a244a 100644
--- a/MdePkg/Library/BaseLib/Ia32/Invd.S
+++ b/MdePkg/Library/BaseLib/Ia32/Invd.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmInvd
+.globl ASM_PFX(AsmInvd)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmInvd:
+ASM_PFX(AsmInvd):
     invd
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/LRotU64.S b/MdePkg/Library/BaseLib/Ia32/LRotU64.S
index 0208134556..3b866e2700 100644
--- a/MdePkg/Library/BaseLib/Ia32/LRotU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/LRotU64.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathLRotU64
+.globl ASM_PFX(InternalMathLRotU64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -29,7 +29,7 @@
 #   IN      UINTN                     Count
 #   );
 #------------------------------------------------------------------------------
-_InternalMathLRotU64:
+ASM_PFX(InternalMathLRotU64):
     push    %ebx
     movb    16(%esp), %cl
     movl    12(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/LShiftU64.S b/MdePkg/Library/BaseLib/Ia32/LShiftU64.S
index ef572700ce..a4b99eb80a 100644
--- a/MdePkg/Library/BaseLib/Ia32/LShiftU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/LShiftU64.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathLShiftU64
+.globl ASM_PFX(InternalMathLShiftU64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -29,7 +29,7 @@
 #   IN      UINTN                     Count
 #   );
 #------------------------------------------------------------------------------
-_InternalMathLShiftU64:
+ASM_PFX(InternalMathLShiftU64):
     movb    12(%esp), %cl
     xorl    %eax, %eax
     movl    4(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/LongJump.S b/MdePkg/Library/BaseLib/Ia32/LongJump.S
index afb1ca5943..0b76896085 100644
--- a/MdePkg/Library/BaseLib/Ia32/LongJump.S
+++ b/MdePkg/Library/BaseLib/Ia32/LongJump.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalLongJump
+.globl ASM_PFX(InternalLongJump)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -29,7 +29,7 @@
 #   IN      UINTN                     Value
 #   );
 #------------------------------------------------------------------------------
-_InternalLongJump:
+ASM_PFX(InternalLongJump):
     pop     %eax
     pop     %edx
     pop     %eax
diff --git a/MdePkg/Library/BaseLib/Ia32/ModU64x32.S b/MdePkg/Library/BaseLib/Ia32/ModU64x32.S
index b2829c09c7..00dc6a08ab 100644
--- a/MdePkg/Library/BaseLib/Ia32/ModU64x32.S
+++ b/MdePkg/Library/BaseLib/Ia32/ModU64x32.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathModU64x32
+.globl ASM_PFX(InternalMathModU64x32)
 
 #------------------------------------------------------------------------------
 # UINT32
@@ -29,7 +29,7 @@
 #   IN      UINT32                    Divisor
 #   );
 #------------------------------------------------------------------------------
-_InternalMathModU64x32:
+ASM_PFX(InternalMathModU64x32):
     movl    8(%esp), %eax
     movl    12(%esp), %ecx
     xorl    %edx, %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/Monitor.S b/MdePkg/Library/BaseLib/Ia32/Monitor.S
index d1310c5a58..6e9284dcd4 100644
--- a/MdePkg/Library/BaseLib/Ia32/Monitor.S
+++ b/MdePkg/Library/BaseLib/Ia32/Monitor.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmMonitor
+.globl ASM_PFX(AsmMonitor)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -32,7 +32,7 @@
 #   IN      UINTN                     Edx
 #   );
 #------------------------------------------------------------------------------
-_AsmMonitor:
+ASM_PFX(AsmMonitor):
     movl    4(%esp), %eax
     movl    8(%esp), %ecx
     movl    12(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/MultU64x32.S b/MdePkg/Library/BaseLib/Ia32/MultU64x32.S
index c12d3bd15a..b9d1eb8ca7 100644
--- a/MdePkg/Library/BaseLib/Ia32/MultU64x32.S
+++ b/MdePkg/Library/BaseLib/Ia32/MultU64x32.S
@@ -22,7 +22,7 @@
     .386:
     .code:
 
-.globl _InternalMathMultU64x32
+.globl ASM_PFX(InternalMathMultU64x32)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -32,7 +32,7 @@
 #   IN      UINT32                    Multiplier
 #   );
 #------------------------------------------------------------------------------
-_InternalMathMultU64x32:
+ASM_PFX(InternalMathMultU64x32):
     movl    12(%esp), %ecx
     movl    %ecx, %eax
     imull   8(%esp), %ecx
diff --git a/MdePkg/Library/BaseLib/Ia32/MultU64x64.S b/MdePkg/Library/BaseLib/Ia32/MultU64x64.S
index e8daa318be..03523865f6 100644
--- a/MdePkg/Library/BaseLib/Ia32/MultU64x64.S
+++ b/MdePkg/Library/BaseLib/Ia32/MultU64x64.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathMultU64x64
+.globl ASM_PFX(InternalMathMultU64x64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -29,7 +29,7 @@
 #   IN      UINT64                    Multiplier
 #   );
 #------------------------------------------------------------------------------
-_InternalMathMultU64x64:
+ASM_PFX(InternalMathMultU64x64):
     push    %ebx
     movl    8(%esp), %ebx
     movl    16(%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/Mwait.S b/MdePkg/Library/BaseLib/Ia32/Mwait.S
index 9b8a8a9643..12f6a87511 100644
--- a/MdePkg/Library/BaseLib/Ia32/Mwait.S
+++ b/MdePkg/Library/BaseLib/Ia32/Mwait.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmMwait
+.globl ASM_PFX(AsmMwait)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -31,7 +31,7 @@
 #   IN      UINTN                     Ecx
 #   );
 #------------------------------------------------------------------------------
-_AsmMwait:
+ASM_PFX(AsmMwait):
     movl    4(%esp), %eax
     movl    8(%esp), %ecx
     mwait   %eax, %ecx
diff --git a/MdePkg/Library/BaseLib/Ia32/RRotU64.S b/MdePkg/Library/BaseLib/Ia32/RRotU64.S
index bf51f38ef6..35935639b9 100644
--- a/MdePkg/Library/BaseLib/Ia32/RRotU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/RRotU64.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalMathRRotU64
+.globl ASM_PFX(InternalMathRRotU64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -29,7 +29,7 @@
 #   IN      UINTN                     Count
 #   );
 #------------------------------------------------------------------------------
-_InternalMathRRotU64:
+ASM_PFX(InternalMathRRotU64):
     push    %ebx
     movb    16(%esp), %cl
     movl    8(%esp), %eax
diff --git a/MdePkg/Library/BaseLib/Ia32/RShiftU64.S b/MdePkg/Library/BaseLib/Ia32/RShiftU64.S
index 80133807cb..ca78394e39 100644
--- a/MdePkg/Library/BaseLib/Ia32/RShiftU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/RShiftU64.S
@@ -22,7 +22,7 @@
     .686:
     .code:
 
-.globl _InternalMathRShiftU64
+.globl ASM_PFX(InternalMathRShiftU64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -32,7 +32,7 @@
 #   IN      UINTN                     Count
 #   );
 #------------------------------------------------------------------------------
-_InternalMathRShiftU64:
+ASM_PFX(InternalMathRShiftU64):
     movb    12(%esp), %cl
     xorl    %edx, %edx
     movl    8(%esp), %eax
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCr0.S b/MdePkg/Library/BaseLib/Ia32/ReadCr0.S
index 324cba9046..3433344b7b 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadCr0.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadCr0.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadCr0
+.globl ASM_PFX(AsmReadCr0)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadCr0:
+ASM_PFX(AsmReadCr0):
     movl    %cr0, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCr2.S b/MdePkg/Library/BaseLib/Ia32/ReadCr2.S
index dce8e0c7b7..d308895367 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadCr2.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadCr2.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadCr2
+.globl ASM_PFX(AsmReadCr2)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadCr2:
+ASM_PFX(AsmReadCr2):
     movl    %cr2, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCr3.S b/MdePkg/Library/BaseLib/Ia32/ReadCr3.S
index b9ad97f608..aaec1f01d0 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadCr3.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadCr3.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadCr3
+.globl ASM_PFX(AsmReadCr3)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadCr3:
+ASM_PFX(AsmReadCr3):
     movl    %cr3, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCr4.S b/MdePkg/Library/BaseLib/Ia32/ReadCr4.S
index b1a2f6a19c..442d359eda 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadCr4.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadCr4.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadCr4
+.globl ASM_PFX(AsmReadCr4)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadCr4:
+ASM_PFX(AsmReadCr4):
     movl    %cr4, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCs.S b/MdePkg/Library/BaseLib/Ia32/ReadCs.S
index 11c9c3f669..a3ad69d304 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadCs.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadCs.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadCs
+.globl ASM_PFX(AsmReadCs)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadCs:
+ASM_PFX(AsmReadCs):
     movl    %cs, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr0.S b/MdePkg/Library/BaseLib/Ia32/ReadDr0.S
index 3110752487..d4c61f1484 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr0.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr0.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr0
+.globl ASM_PFX(AsmReadDr0)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr0:
+ASM_PFX(AsmReadDr0):
     movl    %dr0, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr1.S b/MdePkg/Library/BaseLib/Ia32/ReadDr1.S
index d975e1c15c..27c5554257 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr1.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr1.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr1
+.globl ASM_PFX(AsmReadDr1)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr1:
+ASM_PFX(AsmReadDr1):
     movl    %dr1, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr2.S b/MdePkg/Library/BaseLib/Ia32/ReadDr2.S
index 8af8e22d6f..cca84b9efd 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr2.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr2.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr2
+.globl ASM_PFX(AsmReadDr2)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr2:
+ASM_PFX(AsmReadDr2):
     movl    %dr2, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr3.S b/MdePkg/Library/BaseLib/Ia32/ReadDr3.S
index c1baf7c8fb..60b0550381 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr3.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr3.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr3
+.globl ASM_PFX(AsmReadDr3)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr3:
+ASM_PFX(AsmReadDr3):
     movl    %dr3, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr4.S b/MdePkg/Library/BaseLib/Ia32/ReadDr4.S
index 4beac9fdfd..84883df971 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr4.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr4.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr4
+.globl ASM_PFX(AsmReadDr4)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr4:
+ASM_PFX(AsmReadDr4):
     movl    %dr4, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr5.S b/MdePkg/Library/BaseLib/Ia32/ReadDr5.S
index 6aff412494..5abb226b91 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr5.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr5.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr5
+.globl ASM_PFX(AsmReadDr5)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr5:
+ASM_PFX(AsmReadDr5):
     movl    %dr5, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr6.S b/MdePkg/Library/BaseLib/Ia32/ReadDr6.S
index f433ee3926..9594851c7e 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr6.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr6.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr6
+.globl ASM_PFX(AsmReadDr6)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr6:
+ASM_PFX(AsmReadDr6):
     movl    %dr6, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDr7.S b/MdePkg/Library/BaseLib/Ia32/ReadDr7.S
index 7cdd48d60e..4ba13efcb4 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDr7.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDr7.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDr7
+.globl ASM_PFX(AsmReadDr7)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDr7:
+ASM_PFX(AsmReadDr7):
     movl    %dr7, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadDs.S b/MdePkg/Library/BaseLib/Ia32/ReadDs.S
index 439c272c09..c3dc8451ad 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadDs.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadDs.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadDs
+.globl ASM_PFX(AsmReadDs)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadDs:
+ASM_PFX(AsmReadDs):
     movl    %ds, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadEflags.S b/MdePkg/Library/BaseLib/Ia32/ReadEflags.S
index c4dd095176..ab5e522739 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadEflags.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadEflags.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadEflags
+.globl ASM_PFX(AsmReadEflags)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadEflags:
+ASM_PFX(AsmReadEflags):
     pushfl
     pop     %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadEs.S b/MdePkg/Library/BaseLib/Ia32/ReadEs.S
index 164a2fc620..26ed55d9e1 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadEs.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadEs.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadEs
+.globl ASM_PFX(AsmReadEs)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadEs:
+ASM_PFX(AsmReadEs):
     movl    %es, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadFs.S b/MdePkg/Library/BaseLib/Ia32/ReadFs.S
index 571cb7a3c8..bd38c6ac10 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadFs.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadFs.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadFs
+.globl ASM_PFX(AsmReadFs)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadFs:
+ASM_PFX(AsmReadFs):
     movl    %fs, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadGdtr.S b/MdePkg/Library/BaseLib/Ia32/ReadGdtr.S
index f69f4219ed..8869164606 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadGdtr.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadGdtr.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86ReadGdtr
+.globl ASM_PFX(InternalX86ReadGdtr)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,7 +30,7 @@
 #   OUT IA32_DESCRIPTOR  *Gdtr
 #   );
 #------------------------------------------------------------------------------
-_InternalX86ReadGdtr:
+ASM_PFX(InternalX86ReadGdtr):
     movl    4(%esp), %eax
     sgdt    (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadGs.S b/MdePkg/Library/BaseLib/Ia32/ReadGs.S
index 6ae5dd1b57..82b396661d 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadGs.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadGs.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadGs
+.globl ASM_PFX(AsmReadGs)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadGs:
+ASM_PFX(AsmReadGs):
     movl    %gs, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadIdtr.S b/MdePkg/Library/BaseLib/Ia32/ReadIdtr.S
index 67f89c4fca..0e5d32e3d8 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadIdtr.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadIdtr.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _InternalX86ReadIdtr
+.globl ASM_PFX(InternalX86ReadIdtr)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -30,7 +30,7 @@
 #   OUT IA32_DESCRIPTOR  *Idtr
 #   );
 #------------------------------------------------------------------------------
-_InternalX86ReadIdtr:
+ASM_PFX(InternalX86ReadIdtr):
     movl    4(%esp), %eax
     sidt    (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadLdtr.S b/MdePkg/Library/BaseLib/Ia32/ReadLdtr.S
index a1581a9171..addb1757d0 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadLdtr.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadLdtr.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadLdtr
+.globl ASM_PFX(AsmReadLdtr)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadLdtr:
+ASM_PFX(AsmReadLdtr):
     sldt   %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm0.S b/MdePkg/Library/BaseLib/Ia32/ReadMm0.S
index a021786cf8..f191337f68 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm0.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm0.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm0
+.globl ASM_PFX(AsmReadMm0)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm0:
+ASM_PFX(AsmReadMm0):
     push    %eax
     push    %eax
     movq    %mm0, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm1.S b/MdePkg/Library/BaseLib/Ia32/ReadMm1.S
index 53774cbb37..790541aaeb 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm1.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm1.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm1
+.globl ASM_PFX(AsmReadMm1)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm1:
+ASM_PFX(AsmReadMm1):
     push    %eax
     push    %eax
     movq    %mm1, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm2.S b/MdePkg/Library/BaseLib/Ia32/ReadMm2.S
index 8da95f4214..231d62c762 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm2.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm2.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm2
+.globl ASM_PFX(AsmReadMm2)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm2:
+ASM_PFX(AsmReadMm2):
     push    %eax
     push    %eax
     movq    %mm2, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm3.S b/MdePkg/Library/BaseLib/Ia32/ReadMm3.S
index 6e5ac7f601..1e1f6dd684 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm3.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm3.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm3
+.globl ASM_PFX(AsmReadMm3)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm3:
+ASM_PFX(AsmReadMm3):
     push    %eax
     push    %eax
     movq    %mm3, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm4.S b/MdePkg/Library/BaseLib/Ia32/ReadMm4.S
index 0df806b5d4..5da446befe 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm4.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm4.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm4
+.globl ASM_PFX(AsmReadMm4)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm4:
+ASM_PFX(AsmReadMm4):
     push    %eax
     push    %eax
     movq    %mm4, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm5.S b/MdePkg/Library/BaseLib/Ia32/ReadMm5.S
index b41c895433..5528fe1812 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm5.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm5.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm5
+.globl ASM_PFX(AsmReadMm5)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm5:
+ASM_PFX(AsmReadMm5):
     push    %eax
     push    %eax
     movq    %mm5, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm6.S b/MdePkg/Library/BaseLib/Ia32/ReadMm6.S
index ac416103a3..5d9bd11269 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm6.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm6.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm6
+.globl ASM_PFX(AsmReadMm6)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm6:
+ASM_PFX(AsmReadMm6):
     push    %eax
     push    %eax
     movq    %mm6, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMm7.S b/MdePkg/Library/BaseLib/Ia32/ReadMm7.S
index 52200ed3fc..26866b6a09 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMm7.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMm7.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMm7
+.globl ASM_PFX(AsmReadMm7)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -30,7 +30,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMm7:
+ASM_PFX(AsmReadMm7):
     push    %eax
     push    %eax
     movq    %mm7, (%esp)
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadMsr64.S b/MdePkg/Library/BaseLib/Ia32/ReadMsr64.S
index dadd449326..505b7e688b 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadMsr64.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadMsr64.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadMsr64
+.globl ASM_PFX(AsmReadMsr64)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -30,7 +30,7 @@
 #   IN UINT32  Index
 #   );
 #------------------------------------------------------------------------------
-_AsmReadMsr64:
+ASM_PFX(AsmReadMsr64):
     movl    4(%esp), %ecx
     rdmsr
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadPmc.S b/MdePkg/Library/BaseLib/Ia32/ReadPmc.S
index 66041d700e..055e99c25a 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadPmc.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadPmc.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadPmc
+.globl ASM_PFX(AsmReadPmc)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -30,7 +30,7 @@
 #   IN UINT32   PmcIndex
 #   );
 #------------------------------------------------------------------------------
-_AsmReadPmc:
+ASM_PFX(AsmReadPmc):
     movl    4(%esp), %ecx
     rdpmc
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadSs.S b/MdePkg/Library/BaseLib/Ia32/ReadSs.S
index 7d044c11e5..4f15248f1a 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadSs.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadSs.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadSs
+.globl ASM_PFX(AsmReadSs)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadSs:
+ASM_PFX(AsmReadSs):
     movl    %ss, %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadTr.S b/MdePkg/Library/BaseLib/Ia32/ReadTr.S
index 3dbf3806a0..af12dd2f3f 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadTr.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadTr.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadTr
+.globl ASM_PFX(AsmReadTr)
 
 #------------------------------------------------------------------------------
 # UINT16
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadTr:
+ASM_PFX(AsmReadTr):
     str     %eax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadTsc.S b/MdePkg/Library/BaseLib/Ia32/ReadTsc.S
index 90a0de9777..cab29661ae 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadTsc.S
+++ b/MdePkg/Library/BaseLib/Ia32/ReadTsc.S
@@ -21,7 +21,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _AsmReadTsc
+.globl ASM_PFX(AsmReadTsc)
 
 #------------------------------------------------------------------------------
 # UINT64
@@ -30,6 +30,6 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_AsmReadTsc:
+ASM_PFX(AsmReadTsc):
     rdtsc
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/SetJump.S b/MdePkg/Library/BaseLib/Ia32/SetJump.S
index d68b95a87a..c8993084ac 100644
--- a/MdePkg/Library/BaseLib/Ia32/SetJump.S
+++ b/MdePkg/Library/BaseLib/Ia32/SetJump.S
@@ -19,7 +19,7 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _SetJump, _InternalAssertJumpBuffer
+.globl ASM_PFX(SetJump), ASM_PFX(InternalAssertJumpBuffer)
 
 #------------------------------------------------------------------------------
 # UINTN
@@ -28,9 +28,9 @@
 #   OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
 #   );
 #------------------------------------------------------------------------------
-_SetJump:
+ASM_PFX(SetJump):
     pushl   0x4(%esp)
-    call    _InternalAssertJumpBuffer
+    call    ASM_PFX(InternalAssertJumpBuffer)
     pop     %ecx
     pop     %ecx
     movl    (%esp), %edx
diff --git a/MdePkg/Library/BaseLib/Ia32/SwapBytes64.S b/MdePkg/Library/BaseLib/Ia32/SwapBytes64.S
index a6a6bb0451..c15ca444f0 100644
--- a/MdePkg/Library/BaseLib/Ia32/SwapBytes64.S
+++ b/MdePkg/Library/BaseLib/Ia32/SwapBytes64.S
@@ -29,8 +29,8 @@
 #   IN      UINT64                    Operand
 #   );
 #------------------------------------------------------------------------------
-.globl _InternalMathSwapBytes64
-_InternalMathSwapBytes64:
+.globl ASM_PFX(InternalMathSwapBytes64)
+ASM_PFX(InternalMathSwapBytes64):
     movl    8(%esp), %eax
     movl    4(%esp), %edx
     bswapl  %eax
diff --git a/MdePkg/Library/BaseLib/Ia32/Thunk16.S b/MdePkg/Library/BaseLib/Ia32/Thunk16.S
index 2641556d98..c45cdb0a2d 100644
--- a/MdePkg/Library/BaseLib/Ia32/Thunk16.S
+++ b/MdePkg/Library/BaseLib/Ia32/Thunk16.S
@@ -19,14 +19,14 @@
 #
 #------------------------------------------------------------------------------
 
-.globl _m16Start, _m16Size, _mThunk16Attr, _m16Gdt, _m16GdtrBase, _mTransition
-.globl _InternalAsmThunk16
+.globl ASM_PFX(m16Start), ASM_PFX(m16Size), ASM_PFX(mThunk16Attr), ASM_PFX(m16Gdt), ASM_PFX(m16GdtrBase), ASM_PFX(mTransition)
+.globl ASM_PFX(InternalAsmThunk16)
 
-_m16Start:
+ASM_PFX(m16Start):
 
 SavedGdt:     .space  6
 
-_BackFromUserCode:
+ASM_PFX(BackFromUserCode):
     push    %ss
     push    %cs
     .byte   0x66
@@ -40,7 +40,7 @@ L_Base1:
     push    %ds
     pushaw                              # pushad actually
     .byte   0x66, 0xba                  # mov edx, imm32
-_ThunkAttr: .space  4
+ASM_PFX(ThunkAttr): .space  4
     testb   $THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15, %dl
     jz      1f
     movl    $0x15cd2401, %eax           # mov ax, 2401h & int 15h
@@ -74,14 +74,14 @@ SavedEsp:   .space  4
     .byte   0x66
     lret                                # return to protected mode
 
-_EntryPoint:    .long      _ToUserCode - _m16Start
+_EntryPoint:    .long      ASM_PFX(ToUserCode) - ASM_PFX(m16Start)
                 .word      0x8
 _16Idtr:        .word      0x3ff
                 .long      0
 _16Gdtr:        .word      GdtEnd - _NullSegDesc - 1
-_16GdtrBase:    .long     _NullSegDesc
+_16GdtrBase:    .long      _NullSegDesc
 
-_ToUserCode:
+ASM_PFX(ToUserCode):
     movl    %ss, %edx
     movl    %ecx, %ss                   # set new segment selectors
     movl    %ecx, %ds
@@ -136,7 +136,7 @@ GdtEnd:
 #   @param  Transition  Pointer to the transition code
 #   @return The address of the 16-bit stack after returning from user code
 #
-_InternalAsmThunk16:
+ASM_PFX(InternalAsmThunk16):
     push    %ebp
     push    %ebx
     push    %esi
@@ -193,8 +193,8 @@ _InternalAsmThunk16:
 
     .const:
 
-_m16Size:        .word      _InternalAsmThunk16 - _m16Start
-_mThunk16Attr:   .word      _ThunkAttr          - _m16Start
-_m16Gdt:         .word      _NullSegDesc        - _m16Start
-_m16GdtrBase:    .word      _16GdtrBase         - _m16Start
-_mTransition:    .word      _EntryPoint         - _m16Start
+ASM_PFX(m16Size):        .word      _InternalAsmThunk16 - ASM_PFX(m16Start)
+ASM_PFX(mThunk16Attr):   .word      _ThunkAttr          - ASM_PFX(m16Start)
+ASM_PFX(m16Gdt):         .word      _NullSegDesc        - ASM_PFX(m16Start)
+ASM_PFX(m16GdtrBase):    .word      _16GdtrBase         - ASM_PFX(m16Start)
+ASM_PFX(mTransition):    .word      _EntryPoint         - ASM_PFX(m16Start)
diff --git a/MdePkg/Library/BaseLib/Ia32/Wbinvd.S b/MdePkg/Library/BaseLib/Ia32/Wbinvd.S
index 42e9fc3974..b19348dad9 100644
--- a/MdePkg/Library/BaseLib/Ia32/Wbinvd.S
+++ b/MdePkg/Library/BaseLib/Ia32/Wbinvd.S
@@ -28,7 +28,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWbinvd
-_AsmWbinvd:
+.globl ASM_PFX(AsmWbinvd)
+ASM_PFX(AsmWbinvd):
     wbinvd
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteCr0.S b/MdePkg/Library/BaseLib/Ia32/WriteCr0.S
index 273f0bf8a6..6bce3a4d50 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteCr0.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteCr0.S
@@ -28,8 +28,8 @@
 #   IN      UINTN                     Cr0
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteCr0
-_AsmWriteCr0:
+.globl ASM_PFX(AsmWriteCr0)
+ASM_PFX(AsmWriteCr0):
     movl    4(%esp), %eax
     movl    %eax, %cr0
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteCr2.S b/MdePkg/Library/BaseLib/Ia32/WriteCr2.S
index bc947e99a2..64d2c1b534 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteCr2.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteCr2.S
@@ -28,8 +28,8 @@
 #   IN      UINTN                     Cr2
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteCr2
-_AsmWriteCr2:
+.globl ASM_PFX(AsmWriteCr2)
+ASM_PFX(AsmWriteCr2):
     movl    4(%esp), %eax
     movl    %eax, %cr2
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteCr3.S b/MdePkg/Library/BaseLib/Ia32/WriteCr3.S
index 9d5c215714..767182ee4e 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteCr3.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteCr3.S
@@ -28,8 +28,8 @@
 #   IN      UINTN                     Cr3
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteCr3
-_AsmWriteCr3:
+.globl ASM_PFX(AsmWriteCr3)
+ASM_PFX(AsmWriteCr3):
     movl    4(%esp), %eax
     movl    %eax, %cr3
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteCr4.S b/MdePkg/Library/BaseLib/Ia32/WriteCr4.S
index 346bb7e85a..dc6828ac91 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteCr4.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteCr4.S
@@ -28,8 +28,8 @@
 #   IN      UINTN                     Cr4
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteCr4
-_AsmWriteCr4:
+.globl ASM_PFX(AsmWriteCr4)
+ASM_PFX(AsmWriteCr4):
     movl    4(%esp), %eax
     movl    %eax, %cr4
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr0.S b/MdePkg/Library/BaseLib/Ia32/WriteDr0.S
index f65bb3fc6f..c05af0ec1e 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr0.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr0.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr0
-_AsmWriteDr0:
+.globl ASM_PFX(AsmWriteDr0)
+ASM_PFX(AsmWriteDr0):
     movl    4(%esp), %eax
     movl    %eax, %dr0
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr1.S b/MdePkg/Library/BaseLib/Ia32/WriteDr1.S
index 8c5ed5997d..87031768ac 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr1.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr1.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr1
-_AsmWriteDr1:
+.globl ASM_PFX(AsmWriteDr1)
+ASM_PFX(AsmWriteDr1):
     movl    4(%esp), %eax
     movl    %eax, %dr1
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr2.S b/MdePkg/Library/BaseLib/Ia32/WriteDr2.S
index c946d296da..ca4e301b93 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr2.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr2.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr2
-_AsmWriteDr2:
+.globl ASM_PFX(AsmWriteDr2)
+ASM_PFX(AsmWriteDr2):
     movl    4(%esp), %eax
     movl    %eax, %dr2
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr3.S b/MdePkg/Library/BaseLib/Ia32/WriteDr3.S
index 27080ddbcd..ed23db7e90 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr3.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr3.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr3
-_AsmWriteDr3:
+.globl ASM_PFX(AsmWriteDr3)
+ASM_PFX(AsmWriteDr3):
     movl    4(%esp), %eax
     movl    %eax, %dr3
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr4.S b/MdePkg/Library/BaseLib/Ia32/WriteDr4.S
index 453de9ad44..d17595213a 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr4.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr4.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr4
-_AsmWriteDr4:
+.globl ASM_PFX(AsmWriteDr4)
+ASM_PFX(AsmWriteDr4):
     movl    4(%esp), %eax
     movl    %eax, %dr4
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr5.S b/MdePkg/Library/BaseLib/Ia32/WriteDr5.S
index 833fb8ee62..7e3bb94f1f 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr5.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr5.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr5
-_AsmWriteDr5:
+.globl ASM_PFX(AsmWriteDr5)
+ASM_PFX(AsmWriteDr5):
     movl    4(%esp), %eax
     movl    %eax, %dr5
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr6.S b/MdePkg/Library/BaseLib/Ia32/WriteDr6.S
index f4e4e9919f..0827f347bd 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr6.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr6.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr6
-_AsmWriteDr6:
+.globl ASM_PFX(AsmWriteDr6)
+ASM_PFX(AsmWriteDr6):
     movl    4(%esp), %eax
     movl    %eax, %dr6
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr7.S b/MdePkg/Library/BaseLib/Ia32/WriteDr7.S
index 62210ec911..1f3e916675 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteDr7.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr7.S
@@ -28,8 +28,8 @@
 #   IN UINTN Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteDr7
-_AsmWriteDr7:
+.globl ASM_PFX(AsmWriteDr7)
+ASM_PFX(AsmWriteDr7):
     movl    4(%esp), %eax
     movl    %eax, %dr7
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteGdtr.S b/MdePkg/Library/BaseLib/Ia32/WriteGdtr.S
index 1a0f1d9d95..3aedf7dd68 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteGdtr.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteGdtr.S
@@ -28,8 +28,8 @@
 #   OUT IA32_DESCRIPTOR  *Gdtr
 #   );
 #------------------------------------------------------------------------------
-.globl _InternalX86WriteGdtr
-_InternalX86WriteGdtr:
+.globl ASM_PFX(InternalX86WriteGdtr)
+ASM_PFX(InternalX86WriteGdtr):
     movl    4(%esp), %eax
     lgdt    (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteIdtr.S b/MdePkg/Library/BaseLib/Ia32/WriteIdtr.S
index 6e79b212cc..c3e6ad3353 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteIdtr.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteIdtr.S
@@ -28,8 +28,8 @@
 #   OUT IA32_DESCRIPTOR  *Idtr
 #   );
 #------------------------------------------------------------------------------
-.globl _InternalX86WriteIdtr
-_InternalX86WriteIdtr:
+.globl ASM_PFX(InternalX86WriteIdtr)
+ASM_PFX(InternalX86WriteIdtr):
     movl    4(%esp), %eax
     lidt    (%eax)
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteLdtr.S b/MdePkg/Library/BaseLib/Ia32/WriteLdtr.S
index 69f1ed046e..8b2cc3c029 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteLdtr.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteLdtr.S
@@ -28,8 +28,8 @@
 #   IN UINT16 Ldtr
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteLdtr
-_AsmWriteLdtr:
+.globl ASM_PFX(AsmWriteLdtr)
+ASM_PFX(AsmWriteLdtr):
     movl    4(%esp), %eax
     lldtw   %ax
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm0.S b/MdePkg/Library/BaseLib/Ia32/WriteMm0.S
index 15cd960790..ef70763e52 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm0.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm0.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm0
-_AsmWriteMm0:
+.globl ASM_PFX(AsmWriteMm0)
+ASM_PFX(AsmWriteMm0):
     movq    4(%esp), %mm0
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm1.S b/MdePkg/Library/BaseLib/Ia32/WriteMm1.S
index 510dcedb08..74a3d711b5 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm1.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm1.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm1
-_AsmWriteMm1:
+.globl ASM_PFX(AsmWriteMm1)
+ASM_PFX(AsmWriteMm1):
     movq    4(%esp), %mm1
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm2.S b/MdePkg/Library/BaseLib/Ia32/WriteMm2.S
index c30c1711ae..a3c548dcec 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm2.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm2.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm2
-_AsmWriteMm2:
+.globl ASM_PFX(AsmWriteMm2)
+ASM_PFX(AsmWriteMm2):
     movq    4(%esp), %mm2
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm3.S b/MdePkg/Library/BaseLib/Ia32/WriteMm3.S
index 1abafd244b..98b11a5818 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm3.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm3.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm3
-_AsmWriteMm3:
+.globl ASM_PFX(AsmWriteMm3)
+ASM_PFX(AsmWriteMm3):
     movq    4(%esp), %mm3
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm4.S b/MdePkg/Library/BaseLib/Ia32/WriteMm4.S
index beeaa48699..107c695cf7 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm4.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm4.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm4
-_AsmWriteMm4:
+.globl ASM_PFX(AsmWriteMm4)
+ASM_PFX(AsmWriteMm4):
     movq    4(%esp), %mm4
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm5.S b/MdePkg/Library/BaseLib/Ia32/WriteMm5.S
index c8da38c970..be6a6f78b2 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm5.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm5.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm5
-_AsmWriteMm5:
+.globl ASM_PFX(AsmWriteMm5)
+ASM_PFX(AsmWriteMm5):
     movq    4(%esp), %mm5
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm6.S b/MdePkg/Library/BaseLib/Ia32/WriteMm6.S
index 79003e2f48..51a8973460 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm6.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm6.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm6
-_AsmWriteMm6:
+.globl ASM_PFX(AsmWriteMm6)
+ASM_PFX(AsmWriteMm6):
     movq    4(%esp), %mm6
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm7.S b/MdePkg/Library/BaseLib/Ia32/WriteMm7.S
index 9100e25dfa..824bbeae17 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMm7.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm7.S
@@ -28,7 +28,7 @@
 #   IN UINT64   Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMm7
-_AsmWriteMm7:
+.globl ASM_PFX(AsmWriteMm7)
+ASM_PFX(AsmWriteMm7):
     movq    4(%esp), %mm7
     ret
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMsr64.S b/MdePkg/Library/BaseLib/Ia32/WriteMsr64.S
index 1289c5f862..5c12c981a9 100644
--- a/MdePkg/Library/BaseLib/Ia32/WriteMsr64.S
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMsr64.S
@@ -29,8 +29,8 @@
 #   IN UINT64  Value
 #   );
 #------------------------------------------------------------------------------
-.globl _AsmWriteMsr64
-_AsmWriteMsr64:
+.globl ASM_PFX(AsmWriteMsr64)
+ASM_PFX(AsmWriteMsr64):
     movl    12(%esp), %edx
     movl    8(%esp), %eax
     movl    4(%esp), %ecx