MdePkg/BaseLib: Break out IA32/X64 GCC inline privileged functions

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2800

Break out the IA32/X64 GCC inline functions that can not be used
in a unit test host application into their own source file.  This
does not make any changes to the BaseLib library instance.  This
is in preparation for a new BaseLib instances that is safe to use
with host-based unit test applications.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

5 files changed, 2409 insertions, 2420 deletions

diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index a57ae2da31..c740a819ca 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -1,7 +1,7 @@
 ## @file

 #  Base Library implementation.

 #

-#  Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>

+#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.<BR>

 #  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>

 #  Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>

 #  Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>

@@ -156,6 +156,7 @@
 

 

   Ia32/GccInline.c | GCC

+  Ia32/GccInlinePriv.c | GCC

   Ia32/Thunk16.nasm

   Ia32/EnableDisableInterrupts.nasm| GCC

   Ia32/EnablePaging64.nasm

@@ -310,6 +311,7 @@
   X86PatchInstruction.c

   X86SpeculationBarrier.c

   X64/GccInline.c | GCC

+  X64/GccInlinePriv.c | GCC

   X64/EnableDisableInterrupts.nasm

   X64/DisablePaging64.nasm

   X64/RdRand.nasm

diff --git a/MdePkg/Library/BaseLib/Ia32/GccInline.c b/MdePkg/Library/BaseLib/Ia32/GccInline.c
index 5287200f87..6ed938187a 100644
--- a/MdePkg/Library/BaseLib/Ia32/GccInline.c
+++ b/MdePkg/Library/BaseLib/Ia32/GccInline.c
@@ -1,7 +1,7 @@
 /** @file

   GCC inline implementation of BaseLib processor specific functions.

 

-  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>

+  Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>

   Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>

   SPDX-License-Identifier: BSD-2-Clause-Patent

 

@@ -10,8 +10,6 @@
 

 #include "BaseLibInternals.h"

 

-

-

 /**

   Used to serialize load and store operations.

 

@@ -31,41 +29,6 @@ MemoryFence (
   __asm__ __volatile__ ("":::"memory");

 }

 

-

-/**

-  Enables CPU interrupts.

-

-  Enables CPU interrupts.

-

-**/

-VOID

-EFIAPI

-EnableInterrupts (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("sti"::: "memory");

-}

-

-

-/**

-  Disables CPU interrupts.

-

-  Disables CPU interrupts.

-

-**/

-VOID

-EFIAPI

-DisableInterrupts (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("cli"::: "memory");

-}

-

-

-

-

 /**

   Requests CPU to pause for a short period of time.

 

@@ -82,7 +45,6 @@ CpuPause (
   __asm__ __volatile__ ("pause");

 }

 

-

 /**

   Generates a breakpoint on the CPU.

 

@@ -99,75 +61,6 @@ CpuBreakpoint (
   __asm__ __volatile__ ("int $3");

 }

 

-

-

-/**

-  Returns a 64-bit Machine Specific Register(MSR).

-

-  Reads and returns the 64-bit MSR specified by Index. No parameter checking is

-  performed on Index, and some Index values may cause CPU exceptions. The

-  caller must either guarantee that Index is valid, or the caller must set up

-  exception handlers to catch the exceptions. This function is only available

-  on IA-32 and X64.

-

-  @param  Index The 32-bit MSR index to read.

-

-  @return The value of the MSR identified by Index.

-

-**/

-UINT64

-EFIAPI

-AsmReadMsr64 (

-  IN      UINT32                    Index

-  )

-{

-  UINT64 Data;

-

-  __asm__ __volatile__ (

-    "rdmsr"

-    : "=A" (Data)   // %0

-    : "c"  (Index)  // %1

-    );

-

-  return Data;

-}

-

-/**

-  Writes a 64-bit value to a Machine Specific Register(MSR), and returns the

-  value.

-

-  Writes the 64-bit value specified by Value to the MSR specified by Index. The

-  64-bit value written to the MSR is returned. No parameter checking is

-  performed on Index or Value, and some of these may cause CPU exceptions. The

-  caller must either guarantee that Index and Value are valid, or the caller

-  must establish proper exception handlers. This function is only available on

-  IA-32 and X64.

-

-  @param  Index The 32-bit MSR index to write.

-  @param  Value The 64-bit value to write to the MSR.

-

-  @return Value

-

-**/

-UINT64

-EFIAPI

-AsmWriteMsr64 (

-  IN      UINT32                    Index,

-  IN      UINT64                    Value

-  )

-{

-  __asm__ __volatile__ (

-    "wrmsr"

-    :

-    : "c" (Index),

-      "A" (Value)

-    );

-

-  return Value;

-}

-

-

-

 /**

   Reads the current value of the EFLAGS register.

 

@@ -195,965 +88,6 @@ AsmReadEflags (
   return Eflags;

 }

 

-

-

-/**

-  Reads the current value of the Control Register 0 (CR0).

-

-  Reads and returns the current value of CR0. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 0 (CR0).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr0 (

-  VOID

-  )

-{

-  UINTN   Data;

-

-  __asm__ __volatile__ (

-    "movl %%cr0,%0"

-    : "=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of the Control Register 2 (CR2).

-

-  Reads and returns the current value of CR2. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 2 (CR2).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr2 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%cr2, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-/**

-  Reads the current value of the Control Register 3 (CR3).

-

-  Reads and returns the current value of CR3. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 3 (CR3).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr3 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%cr3, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of the Control Register 4 (CR4).

-

-  Reads and returns the current value of CR4. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 4 (CR4).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr4 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%cr4, %0"

-    : "=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Writes a value to Control Register 0 (CR0).

-

-  Writes and returns a new value to CR0. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr0 The value to write to CR0.

-

-  @return The value written to CR0.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr0 (

-  UINTN  Cr0

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%cr0"

-    :

-    : "r" (Cr0)

-    );

-  return Cr0;

-}

-

-

-/**

-  Writes a value to Control Register 2 (CR2).

-

-  Writes and returns a new value to CR2. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr2 The value to write to CR2.

-

-  @return The value written to CR2.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr2 (

-  UINTN  Cr2

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%cr2"

-    :

-    : "r" (Cr2)

-    );

-  return Cr2;

-}

-

-

-/**

-  Writes a value to Control Register 3 (CR3).

-

-  Writes and returns a new value to CR3. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr3 The value to write to CR3.

-

-  @return The value written to CR3.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr3 (

-  UINTN  Cr3

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%cr3"

-    :

-    : "r" (Cr3)

-    );

-  return Cr3;

-}

-

-

-/**

-  Writes a value to Control Register 4 (CR4).

-

-  Writes and returns a new value to CR4. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr4 The value to write to CR4.

-

-  @return The value written to CR4.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr4 (

-  UINTN  Cr4

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%cr4"

-    :

-    : "r" (Cr4)

-    );

-  return Cr4;

-}

-

-

-/**

-  Reads the current value of Debug Register 0 (DR0).

-

-  Reads and returns the current value of DR0. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 0 (DR0).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr0 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr0, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 1 (DR1).

-

-  Reads and returns the current value of DR1. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 1 (DR1).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr1 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr1, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 2 (DR2).

-

-  Reads and returns the current value of DR2. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 2 (DR2).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr2 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr2, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 3 (DR3).

-

-  Reads and returns the current value of DR3. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 3 (DR3).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr3 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr3, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 4 (DR4).

-

-  Reads and returns the current value of DR4. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 4 (DR4).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr4 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr4, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 5 (DR5).

-

-  Reads and returns the current value of DR5. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 5 (DR5).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr5 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr5, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 6 (DR6).

-

-  Reads and returns the current value of DR6. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 6 (DR6).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr6 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr6, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 7 (DR7).

-

-  Reads and returns the current value of DR7. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 7 (DR7).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr7 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "movl %%dr7, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Writes a value to Debug Register 0 (DR0).

-

-  Writes and returns a new value to DR0. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr0 The value to write to Dr0.

-

-  @return The value written to Debug Register 0 (DR0).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr0 (

-  UINTN  Dr0

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr0"

-    :

-    : "r" (Dr0)

-    );

-  return Dr0;

-}

-

-

-/**

-  Writes a value to Debug Register 1 (DR1).

-

-  Writes and returns a new value to DR1. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr1 The value to write to Dr1.

-

-  @return The value written to Debug Register 1 (DR1).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr1 (

-  UINTN  Dr1

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr1"

-    :

-    : "r" (Dr1)

-    );

-  return Dr1;

-}

-

-

-/**

-  Writes a value to Debug Register 2 (DR2).

-

-  Writes and returns a new value to DR2. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr2 The value to write to Dr2.

-

-  @return The value written to Debug Register 2 (DR2).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr2 (

-  UINTN  Dr2

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr2"

-    :

-    : "r" (Dr2)

-    );

-  return Dr2;

-}

-

-

-/**

-  Writes a value to Debug Register 3 (DR3).

-

-  Writes and returns a new value to DR3. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr3 The value to write to Dr3.

-

-  @return The value written to Debug Register 3 (DR3).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr3 (

-  UINTN  Dr3

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr3"

-    :

-    : "r" (Dr3)

-    );

-  return Dr3;

-}

-

-

-/**

-  Writes a value to Debug Register 4 (DR4).

-

-  Writes and returns a new value to DR4. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr4 The value to write to Dr4.

-

-  @return The value written to Debug Register 4 (DR4).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr4 (

-  UINTN  Dr4

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr4"

-    :

-    : "r" (Dr4)

-    );

-  return Dr4;

-}

-

-

-/**

-  Writes a value to Debug Register 5 (DR5).

-

-  Writes and returns a new value to DR5. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr5 The value to write to Dr5.

-

-  @return The value written to Debug Register 5 (DR5).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr5 (

-  UINTN  Dr5

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr5"

-    :

-    : "r" (Dr5)

-    );

-  return Dr5;

-}

-

-

-/**

-  Writes a value to Debug Register 6 (DR6).

-

-  Writes and returns a new value to DR6. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr6 The value to write to Dr6.

-

-  @return The value written to Debug Register 6 (DR6).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr6 (

-  UINTN  Dr6

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr6"

-    :

-    : "r" (Dr6)

-    );

-  return Dr6;

-}

-

-

-/**

-  Writes a value to Debug Register 7 (DR7).

-

-  Writes and returns a new value to DR7. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr7 The value to write to Dr7.

-

-  @return The value written to Debug Register 7 (DR7).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr7 (

-  UINTN  Dr7

-  )

-{

-  __asm__ __volatile__ (

-    "movl %0, %%dr7"

-    :

-    : "r" (Dr7)

-    );

-  return Dr7;

-}

-

-

-/**

-  Reads the current value of Code Segment Register (CS).

-

-  Reads and returns the current value of CS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of CS.

-

-**/

-UINT16

-EFIAPI

-AsmReadCs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov   %%cs, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Data Segment Register (DS).

-

-  Reads and returns the current value of DS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of DS.

-

-**/

-UINT16

-EFIAPI

-AsmReadDs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%ds, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Extra Segment Register (ES).

-

-  Reads and returns the current value of ES. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of ES.

-

-**/

-UINT16

-EFIAPI

-AsmReadEs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%es, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of FS Data Segment Register (FS).

-

-  Reads and returns the current value of FS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of FS.

-

-**/

-UINT16

-EFIAPI

-AsmReadFs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%fs, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of GS Data Segment Register (GS).

-

-  Reads and returns the current value of GS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of GS.

-

-**/

-UINT16

-EFIAPI

-AsmReadGs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%gs, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Stack Segment Register (SS).

-

-  Reads and returns the current value of SS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of SS.

-

-**/

-UINT16

-EFIAPI

-AsmReadSs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%ds, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Task Register (TR).

-

-  Reads and returns the current value of TR. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of TR.

-

-**/

-UINT16

-EFIAPI

-AsmReadTr (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "str  %0"

-    : "=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current Global Descriptor Table Register(GDTR) descriptor.

-

-  Reads and returns the current GDTR descriptor and returns it in Gdtr. This

-  function is only available on IA-32 and X64.

-

-  @param  Gdtr  The pointer to a GDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86ReadGdtr (

-  OUT     IA32_DESCRIPTOR           *Gdtr

-  )

-{

-  __asm__ __volatile__ (

-    "sgdt %0"

-    : "=m" (*Gdtr)

-    );

-}

-

-

-/**

-  Writes the current Global Descriptor Table Register (GDTR) descriptor.

-

-  Writes and the current GDTR descriptor specified by Gdtr. This function is

-  only available on IA-32 and X64.

-

-  @param  Gdtr  The pointer to a GDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86WriteGdtr (

-  IN      CONST IA32_DESCRIPTOR     *Gdtr

-  )

-{

-  __asm__ __volatile__ (

-    "lgdt %0"

-    :

-    : "m" (*Gdtr)

-    );

-

-}

-

-

-/**

-  Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.

-

-  Reads and returns the current IDTR descriptor and returns it in Idtr. This

-  function is only available on IA-32 and X64.

-

-  @param  Idtr  The pointer to a IDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86ReadIdtr (

-  OUT     IA32_DESCRIPTOR           *Idtr

-  )

-{

-  __asm__ __volatile__ (

-    "sidt  %0"

-    : "=m" (*Idtr)

-    );

-}

-

-

-/**

-  Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.

-

-  Writes the current IDTR descriptor and returns it in Idtr. This function is

-  only available on IA-32 and X64.

-

-  @param  Idtr  The pointer to a IDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86WriteIdtr (

-  IN      CONST IA32_DESCRIPTOR     *Idtr

-  )

-{

-  __asm__ __volatile__ (

-    "lidt %0"

-    :

-    : "m" (*Idtr)

-    );

-}

-

-

-/**

-  Reads the current Local Descriptor Table Register(LDTR) selector.

-

-  Reads and returns the current 16-bit LDTR descriptor value. This function is

-  only available on IA-32 and X64.

-

-  @return The current selector of LDT.

-

-**/

-UINT16

-EFIAPI

-AsmReadLdtr (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "sldt  %0"

-    : "=g" (Data)   // %0

-    );

-

-  return Data;

-}

-

-

-/**

-  Writes the current Local Descriptor Table Register (GDTR) selector.

-

-  Writes and the current LDTR descriptor specified by Ldtr. This function is

-  only available on IA-32 and X64.

-

-  @param  Ldtr  16-bit LDTR selector value.

-

-**/

-VOID

-EFIAPI

-AsmWriteLdtr (

-  IN      UINT16                    Ldtr

-  )

-{

-  __asm__ __volatile__ (

-    "lldtw  %0"

-    :

-    : "g" (Ldtr)   // %0

-    );

-}

-

-

 /**

   Save the current floating point/SSE/SSE2 context to a buffer.

 

@@ -1650,116 +584,3 @@ AsmReadTsc (
 

   return Data;

 }

-

-

-/**

-  Reads the current value of a Performance Counter (PMC).

-

-  Reads and returns the current value of performance counter specified by

-  Index. This function is only available on IA-32 and X64.

-

-  @param  Index The 32-bit Performance Counter index to read.

-

-  @return The value of the PMC specified by Index.

-

-**/

-UINT64

-EFIAPI

-AsmReadPmc (

-  IN      UINT32                    Index

-  )

-{

-  UINT64  Data;

-

-  __asm__ __volatile__ (

-    "rdpmc"

-    : "=A" (Data)

-    : "c"  (Index)

-    );

-

-  return Data;

-}

-

-

-

-

-/**

-  Executes a WBINVD instruction.

-

-  Executes a WBINVD instruction. This function is only available on IA-32 and

-  X64.

-

-**/

-VOID

-EFIAPI

-AsmWbinvd (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("wbinvd":::"memory");

-}

-

-

-/**

-  Executes a INVD instruction.

-

-  Executes a INVD instruction. This function is only available on IA-32 and

-  X64.

-

-**/

-VOID

-EFIAPI

-AsmInvd (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("invd":::"memory");

-

-}

-

-

-/**

-  Flushes a cache line from all the instruction and data caches within the

-  coherency domain of the CPU.

-

-  Flushed the cache line specified by LinearAddress, and returns LinearAddress.

-  This function is only available on IA-32 and X64.

-

-  @param  LinearAddress The address of the cache line to flush. If the CPU is

-                        in a physical addressing mode, then LinearAddress is a

-                        physical address. If the CPU is in a virtual

-                        addressing mode, then LinearAddress is a virtual

-                        address.

-

-  @return LinearAddress

-**/

-VOID *

-EFIAPI

-AsmFlushCacheLine (

-  IN      VOID                      *LinearAddress

-  )

-{

-  UINT32  RegEdx;

-

-  //

-  // If the CPU does not support CLFLUSH instruction,

-  // then promote flush range to flush entire cache.

-  //

-  AsmCpuid (0x01, NULL, NULL, NULL, &RegEdx);

-  if ((RegEdx & BIT19) == 0) {

-    __asm__ __volatile__ ("wbinvd":::"memory");

-    return LinearAddress;

-  }

-

-

-  __asm__ __volatile__ (

-    "clflush (%0)"

-    : "+a" (LinearAddress)

-    :

-    : "memory"

-    );

-

-  return LinearAddress;

-}

-

-

diff --git a/MdePkg/Library/BaseLib/Ia32/GccInlinePriv.c b/MdePkg/Library/BaseLib/Ia32/GccInlinePriv.c
new file mode 100644
index 0000000000..30aa63243b
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/GccInlinePriv.c
@@ -0,0 +1,1170 @@
+/** @file

+  GCC inline implementation of BaseLib processor specific functions that use

+  privlidged instructions.

+

+  Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>

+  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>

+  SPDX-License-Identifier: BSD-2-Clause-Patent

+

+**/

+

+

+#include "BaseLibInternals.h"

+

+/**

+  Enables CPU interrupts.

+

+  Enables CPU interrupts.

+

+**/

+VOID

+EFIAPI

+EnableInterrupts (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("sti"::: "memory");

+}

+

+

+/**

+  Disables CPU interrupts.

+

+  Disables CPU interrupts.

+

+**/

+VOID

+EFIAPI

+DisableInterrupts (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("cli"::: "memory");

+}

+

+/**

+  Returns a 64-bit Machine Specific Register(MSR).

+

+  Reads and returns the 64-bit MSR specified by Index. No parameter checking is

+  performed on Index, and some Index values may cause CPU exceptions. The

+  caller must either guarantee that Index is valid, or the caller must set up

+  exception handlers to catch the exceptions. This function is only available

+  on IA-32 and X64.

+

+  @param  Index The 32-bit MSR index to read.

+

+  @return The value of the MSR identified by Index.

+

+**/

+UINT64

+EFIAPI

+AsmReadMsr64 (

+  IN      UINT32                    Index

+  )

+{

+  UINT64 Data;

+

+  __asm__ __volatile__ (

+    "rdmsr"

+    : "=A" (Data)   // %0

+    : "c"  (Index)  // %1

+    );

+

+  return Data;

+}

+

+/**

+  Writes a 64-bit value to a Machine Specific Register(MSR), and returns the

+  value.

+

+  Writes the 64-bit value specified by Value to the MSR specified by Index. The

+  64-bit value written to the MSR is returned. No parameter checking is

+  performed on Index or Value, and some of these may cause CPU exceptions. The

+  caller must either guarantee that Index and Value are valid, or the caller

+  must establish proper exception handlers. This function is only available on

+  IA-32 and X64.

+

+  @param  Index The 32-bit MSR index to write.

+  @param  Value The 64-bit value to write to the MSR.

+

+  @return Value

+

+**/

+UINT64

+EFIAPI

+AsmWriteMsr64 (

+  IN      UINT32                    Index,

+  IN      UINT64                    Value

+  )

+{

+  __asm__ __volatile__ (

+    "wrmsr"

+    :

+    : "c" (Index),

+      "A" (Value)

+    );

+

+  return Value;

+}

+

+/**

+  Reads the current value of the Control Register 0 (CR0).

+

+  Reads and returns the current value of CR0. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 0 (CR0).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr0 (

+  VOID

+  )

+{

+  UINTN   Data;

+

+  __asm__ __volatile__ (

+    "movl %%cr0,%0"

+    : "=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of the Control Register 2 (CR2).

+

+  Reads and returns the current value of CR2. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 2 (CR2).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr2 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%cr2, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+/**

+  Reads the current value of the Control Register 3 (CR3).

+

+  Reads and returns the current value of CR3. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 3 (CR3).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr3 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%cr3, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of the Control Register 4 (CR4).

+

+  Reads and returns the current value of CR4. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 4 (CR4).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr4 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%cr4, %0"

+    : "=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Writes a value to Control Register 0 (CR0).

+

+  Writes and returns a new value to CR0. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr0 The value to write to CR0.

+

+  @return The value written to CR0.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr0 (

+  UINTN  Cr0

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%cr0"

+    :

+    : "r" (Cr0)

+    );

+  return Cr0;

+}

+

+

+/**

+  Writes a value to Control Register 2 (CR2).

+

+  Writes and returns a new value to CR2. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr2 The value to write to CR2.

+

+  @return The value written to CR2.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr2 (

+  UINTN  Cr2

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%cr2"

+    :

+    : "r" (Cr2)

+    );

+  return Cr2;

+}

+

+

+/**

+  Writes a value to Control Register 3 (CR3).

+

+  Writes and returns a new value to CR3. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr3 The value to write to CR3.

+

+  @return The value written to CR3.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr3 (

+  UINTN  Cr3

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%cr3"

+    :

+    : "r" (Cr3)

+    );

+  return Cr3;

+}

+

+

+/**

+  Writes a value to Control Register 4 (CR4).

+

+  Writes and returns a new value to CR4. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr4 The value to write to CR4.

+

+  @return The value written to CR4.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr4 (

+  UINTN  Cr4

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%cr4"

+    :

+    : "r" (Cr4)

+    );

+  return Cr4;

+}

+

+

+/**

+  Reads the current value of Debug Register 0 (DR0).

+

+  Reads and returns the current value of DR0. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 0 (DR0).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr0 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr0, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 1 (DR1).

+

+  Reads and returns the current value of DR1. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 1 (DR1).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr1 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr1, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 2 (DR2).

+

+  Reads and returns the current value of DR2. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 2 (DR2).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr2 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr2, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 3 (DR3).

+

+  Reads and returns the current value of DR3. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 3 (DR3).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr3 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr3, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 4 (DR4).

+

+  Reads and returns the current value of DR4. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 4 (DR4).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr4 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr4, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 5 (DR5).

+

+  Reads and returns the current value of DR5. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 5 (DR5).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr5 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr5, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 6 (DR6).

+

+  Reads and returns the current value of DR6. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 6 (DR6).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr6 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr6, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 7 (DR7).

+

+  Reads and returns the current value of DR7. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 7 (DR7).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr7 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "movl %%dr7, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Writes a value to Debug Register 0 (DR0).

+

+  Writes and returns a new value to DR0. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr0 The value to write to Dr0.

+

+  @return The value written to Debug Register 0 (DR0).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr0 (

+  UINTN  Dr0

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr0"

+    :

+    : "r" (Dr0)

+    );

+  return Dr0;

+}

+

+

+/**

+  Writes a value to Debug Register 1 (DR1).

+

+  Writes and returns a new value to DR1. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr1 The value to write to Dr1.

+

+  @return The value written to Debug Register 1 (DR1).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr1 (

+  UINTN  Dr1

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr1"

+    :

+    : "r" (Dr1)

+    );

+  return Dr1;

+}

+

+

+/**

+  Writes a value to Debug Register 2 (DR2).

+

+  Writes and returns a new value to DR2. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr2 The value to write to Dr2.

+

+  @return The value written to Debug Register 2 (DR2).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr2 (

+  UINTN  Dr2

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr2"

+    :

+    : "r" (Dr2)

+    );

+  return Dr2;

+}

+

+

+/**

+  Writes a value to Debug Register 3 (DR3).

+

+  Writes and returns a new value to DR3. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr3 The value to write to Dr3.

+

+  @return The value written to Debug Register 3 (DR3).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr3 (

+  UINTN  Dr3

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr3"

+    :

+    : "r" (Dr3)

+    );

+  return Dr3;

+}

+

+

+/**

+  Writes a value to Debug Register 4 (DR4).

+

+  Writes and returns a new value to DR4. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr4 The value to write to Dr4.

+

+  @return The value written to Debug Register 4 (DR4).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr4 (

+  UINTN  Dr4

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr4"

+    :

+    : "r" (Dr4)

+    );

+  return Dr4;

+}

+

+

+/**

+  Writes a value to Debug Register 5 (DR5).

+

+  Writes and returns a new value to DR5. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr5 The value to write to Dr5.

+

+  @return The value written to Debug Register 5 (DR5).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr5 (

+  UINTN  Dr5

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr5"

+    :

+    : "r" (Dr5)

+    );

+  return Dr5;

+}

+

+

+/**

+  Writes a value to Debug Register 6 (DR6).

+

+  Writes and returns a new value to DR6. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr6 The value to write to Dr6.

+

+  @return The value written to Debug Register 6 (DR6).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr6 (

+  UINTN  Dr6

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr6"

+    :

+    : "r" (Dr6)

+    );

+  return Dr6;

+}

+

+

+/**

+  Writes a value to Debug Register 7 (DR7).

+

+  Writes and returns a new value to DR7. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr7 The value to write to Dr7.

+

+  @return The value written to Debug Register 7 (DR7).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr7 (

+  UINTN  Dr7

+  )

+{

+  __asm__ __volatile__ (

+    "movl %0, %%dr7"

+    :

+    : "r" (Dr7)

+    );

+  return Dr7;

+}

+

+

+/**

+  Reads the current value of Code Segment Register (CS).

+

+  Reads and returns the current value of CS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of CS.

+

+**/

+UINT16

+EFIAPI

+AsmReadCs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov   %%cs, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Data Segment Register (DS).

+

+  Reads and returns the current value of DS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of DS.

+

+**/

+UINT16

+EFIAPI

+AsmReadDs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%ds, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Extra Segment Register (ES).

+

+  Reads and returns the current value of ES. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of ES.

+

+**/

+UINT16

+EFIAPI

+AsmReadEs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%es, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of FS Data Segment Register (FS).

+

+  Reads and returns the current value of FS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of FS.

+

+**/

+UINT16

+EFIAPI

+AsmReadFs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%fs, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of GS Data Segment Register (GS).

+

+  Reads and returns the current value of GS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of GS.

+

+**/

+UINT16

+EFIAPI

+AsmReadGs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%gs, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Stack Segment Register (SS).

+

+  Reads and returns the current value of SS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of SS.

+

+**/

+UINT16

+EFIAPI

+AsmReadSs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%ds, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Task Register (TR).

+

+  Reads and returns the current value of TR. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of TR.

+

+**/

+UINT16

+EFIAPI

+AsmReadTr (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "str  %0"

+    : "=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current Global Descriptor Table Register(GDTR) descriptor.

+

+  Reads and returns the current GDTR descriptor and returns it in Gdtr. This

+  function is only available on IA-32 and X64.

+

+  @param  Gdtr  The pointer to a GDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86ReadGdtr (

+  OUT     IA32_DESCRIPTOR           *Gdtr

+  )

+{

+  __asm__ __volatile__ (

+    "sgdt %0"

+    : "=m" (*Gdtr)

+    );

+}

+

+

+/**

+  Writes the current Global Descriptor Table Register (GDTR) descriptor.

+

+  Writes and the current GDTR descriptor specified by Gdtr. This function is

+  only available on IA-32 and X64.

+

+  @param  Gdtr  The pointer to a GDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86WriteGdtr (

+  IN      CONST IA32_DESCRIPTOR     *Gdtr

+  )

+{

+  __asm__ __volatile__ (

+    "lgdt %0"

+    :

+    : "m" (*Gdtr)

+    );

+

+}

+

+

+/**

+  Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.

+

+  Reads and returns the current IDTR descriptor and returns it in Idtr. This

+  function is only available on IA-32 and X64.

+

+  @param  Idtr  The pointer to a IDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86ReadIdtr (

+  OUT     IA32_DESCRIPTOR           *Idtr

+  )

+{

+  __asm__ __volatile__ (

+    "sidt  %0"

+    : "=m" (*Idtr)

+    );

+}

+

+

+/**

+  Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.

+

+  Writes the current IDTR descriptor and returns it in Idtr. This function is

+  only available on IA-32 and X64.

+

+  @param  Idtr  The pointer to a IDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86WriteIdtr (

+  IN      CONST IA32_DESCRIPTOR     *Idtr

+  )

+{

+  __asm__ __volatile__ (

+    "lidt %0"

+    :

+    : "m" (*Idtr)

+    );

+}

+

+

+/**

+  Reads the current Local Descriptor Table Register(LDTR) selector.

+

+  Reads and returns the current 16-bit LDTR descriptor value. This function is

+  only available on IA-32 and X64.

+

+  @return The current selector of LDT.

+

+**/

+UINT16

+EFIAPI

+AsmReadLdtr (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "sldt  %0"

+    : "=g" (Data)   // %0

+    );

+

+  return Data;

+}

+

+

+/**

+  Writes the current Local Descriptor Table Register (GDTR) selector.

+

+  Writes and the current LDTR descriptor specified by Ldtr. This function is

+  only available on IA-32 and X64.

+

+  @param  Ldtr  16-bit LDTR selector value.

+

+**/

+VOID

+EFIAPI

+AsmWriteLdtr (

+  IN      UINT16                    Ldtr

+  )

+{

+  __asm__ __volatile__ (

+    "lldtw  %0"

+    :

+    : "g" (Ldtr)   // %0

+    );

+}

+

+/**

+  Reads the current value of a Performance Counter (PMC).

+

+  Reads and returns the current value of performance counter specified by

+  Index. This function is only available on IA-32 and X64.

+

+  @param  Index The 32-bit Performance Counter index to read.

+

+  @return The value of the PMC specified by Index.

+

+**/

+UINT64

+EFIAPI

+AsmReadPmc (

+  IN      UINT32                    Index

+  )

+{

+  UINT64  Data;

+

+  __asm__ __volatile__ (

+    "rdpmc"

+    : "=A" (Data)

+    : "c"  (Index)

+    );

+

+  return Data;

+}

+

+/**

+  Executes a WBINVD instruction.

+

+  Executes a WBINVD instruction. This function is only available on IA-32 and

+  X64.

+

+**/

+VOID

+EFIAPI

+AsmWbinvd (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("wbinvd":::"memory");

+}

+

+/**

+  Executes a INVD instruction.

+

+  Executes a INVD instruction. This function is only available on IA-32 and

+  X64.

+

+**/

+VOID

+EFIAPI

+AsmInvd (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("invd":::"memory");

+

+}

+

+

+/**

+  Flushes a cache line from all the instruction and data caches within the

+  coherency domain of the CPU.

+

+  Flushed the cache line specified by LinearAddress, and returns LinearAddress.

+  This function is only available on IA-32 and X64.

+

+  @param  LinearAddress The address of the cache line to flush. If the CPU is

+                        in a physical addressing mode, then LinearAddress is a

+                        physical address. If the CPU is in a virtual

+                        addressing mode, then LinearAddress is a virtual

+                        address.

+

+  @return LinearAddress

+**/

+VOID *

+EFIAPI

+AsmFlushCacheLine (

+  IN      VOID                      *LinearAddress

+  )

+{

+  UINT32  RegEdx;

+

+  //

+  // If the CPU does not support CLFLUSH instruction,

+  // then promote flush range to flush entire cache.

+  //

+  AsmCpuid (0x01, NULL, NULL, NULL, &RegEdx);

+  if ((RegEdx & BIT19) == 0) {

+    __asm__ __volatile__ ("wbinvd":::"memory");

+    return LinearAddress;

+  }

+

+

+  __asm__ __volatile__ (

+    "clflush (%0)"

+    : "+a" (LinearAddress)

+    :

+    : "memory"

+    );

+

+  return LinearAddress;

+}

diff --git a/MdePkg/Library/BaseLib/X64/GccInline.c b/MdePkg/Library/BaseLib/X64/GccInline.c
index 154ce1f57e..40a208f198 100644
--- a/MdePkg/Library/BaseLib/X64/GccInline.c
+++ b/MdePkg/Library/BaseLib/X64/GccInline.c
@@ -1,7 +1,7 @@
 /** @file

   GCC inline implementation of BaseLib processor specific functions.

 

-  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>

+  Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>

   Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>

   SPDX-License-Identifier: BSD-2-Clause-Patent

 

@@ -34,40 +34,6 @@ MemoryFence (
 

 

 /**

-  Enables CPU interrupts.

-

-  Enables CPU interrupts.

-

-**/

-VOID

-EFIAPI

-EnableInterrupts (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("sti"::: "memory");

-}

-

-

-/**

-  Disables CPU interrupts.

-

-  Disables CPU interrupts.

-

-**/

-VOID

-EFIAPI

-DisableInterrupts (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("cli"::: "memory");

-}

-

-

-

-

-/**

   Requests CPU to pause for a short period of time.

 

   Requests CPU to pause for a short period of time. Typically used in MP

@@ -101,83 +67,6 @@ CpuBreakpoint (
 }

 

 

-

-/**

-  Returns a 64-bit Machine Specific Register(MSR).

-

-  Reads and returns the 64-bit MSR specified by Index. No parameter checking is

-  performed on Index, and some Index values may cause CPU exceptions. The

-  caller must either guarantee that Index is valid, or the caller must set up

-  exception handlers to catch the exceptions. This function is only available

-  on IA-32 and X64.

-

-  @param  Index The 32-bit MSR index to read.

-

-  @return The value of the MSR identified by Index.

-

-**/

-UINT64

-EFIAPI

-AsmReadMsr64 (

-  IN      UINT32                    Index

-  )

-{

-  UINT32 LowData;

-  UINT32 HighData;

-

-  __asm__ __volatile__ (

-    "rdmsr"

-    : "=a" (LowData),   // %0

-      "=d" (HighData)   // %1

-    : "c"  (Index)      // %2

-    );

-

-  return (((UINT64)HighData) << 32) | LowData;

-}

-

-/**

-  Writes a 64-bit value to a Machine Specific Register(MSR), and returns the

-  value.

-

-  Writes the 64-bit value specified by Value to the MSR specified by Index. The

-  64-bit value written to the MSR is returned. No parameter checking is

-  performed on Index or Value, and some of these may cause CPU exceptions. The

-  caller must either guarantee that Index and Value are valid, or the caller

-  must establish proper exception handlers. This function is only available on

-  IA-32 and X64.

-

-  @param  Index The 32-bit MSR index to write.

-  @param  Value The 64-bit value to write to the MSR.

-

-  @return Value

-

-**/

-UINT64

-EFIAPI

-AsmWriteMsr64 (

-  IN      UINT32                    Index,

-  IN      UINT64                    Value

-  )

-{

-  UINT32 LowData;

-  UINT32 HighData;

-

-  LowData  = (UINT32)(Value);

-  HighData = (UINT32)(Value >> 32);

-

-  __asm__ __volatile__ (

-    "wrmsr"

-    :

-    : "c" (Index),

-      "a" (LowData),

-      "d" (HighData)

-    );

-

-  return Value;

-}

-

-

-

 /**

   Reads the current value of the EFLAGS register.

 

@@ -205,965 +94,6 @@ AsmReadEflags (
   return Eflags;

 }

 

-

-

-/**

-  Reads the current value of the Control Register 0 (CR0).

-

-  Reads and returns the current value of CR0. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 0 (CR0).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr0 (

-  VOID

-  )

-{

-  UINTN   Data;

-

-  __asm__ __volatile__ (

-    "mov  %%cr0,%0"

-    : "=r" (Data)           // %0

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of the Control Register 2 (CR2).

-

-  Reads and returns the current value of CR2. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 2 (CR2).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr2 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%cr2,  %0"

-    : "=r" (Data)           // %0

-    );

-

-  return Data;

-}

-

-/**

-  Reads the current value of the Control Register 3 (CR3).

-

-  Reads and returns the current value of CR3. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 3 (CR3).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr3 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%cr3,  %0"

-    : "=r" (Data)           // %0

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of the Control Register 4 (CR4).

-

-  Reads and returns the current value of CR4. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of the Control Register 4 (CR4).

-

-**/

-UINTN

-EFIAPI

-AsmReadCr4 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%cr4,  %0"

-    : "=r" (Data)           // %0

-    );

-

-  return Data;

-}

-

-

-/**

-  Writes a value to Control Register 0 (CR0).

-

-  Writes and returns a new value to CR0. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr0 The value to write to CR0.

-

-  @return The value written to CR0.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr0 (

-  UINTN  Cr0

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%cr0"

-    :

-    : "r" (Cr0)

-    );

-  return Cr0;

-}

-

-

-/**

-  Writes a value to Control Register 2 (CR2).

-

-  Writes and returns a new value to CR2. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr2 The value to write to CR2.

-

-  @return The value written to CR2.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr2 (

-  UINTN  Cr2

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%cr2"

-    :

-    : "r" (Cr2)

-    );

-  return Cr2;

-}

-

-

-/**

-  Writes a value to Control Register 3 (CR3).

-

-  Writes and returns a new value to CR3. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr3 The value to write to CR3.

-

-  @return The value written to CR3.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr3 (

-  UINTN  Cr3

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%cr3"

-    :

-    : "r" (Cr3)

-    );

-  return Cr3;

-}

-

-

-/**

-  Writes a value to Control Register 4 (CR4).

-

-  Writes and returns a new value to CR4. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Cr4 The value to write to CR4.

-

-  @return The value written to CR4.

-

-**/

-UINTN

-EFIAPI

-AsmWriteCr4 (

-  UINTN  Cr4

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%cr4"

-    :

-    : "r" (Cr4)

-    );

-  return Cr4;

-}

-

-

-/**

-  Reads the current value of Debug Register 0 (DR0).

-

-  Reads and returns the current value of DR0. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 0 (DR0).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr0 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr0, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 1 (DR1).

-

-  Reads and returns the current value of DR1. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 1 (DR1).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr1 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr1, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 2 (DR2).

-

-  Reads and returns the current value of DR2. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 2 (DR2).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr2 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr2, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 3 (DR3).

-

-  Reads and returns the current value of DR3. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 3 (DR3).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr3 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr3, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 4 (DR4).

-

-  Reads and returns the current value of DR4. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 4 (DR4).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr4 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr4, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 5 (DR5).

-

-  Reads and returns the current value of DR5. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 5 (DR5).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr5 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr5, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 6 (DR6).

-

-  Reads and returns the current value of DR6. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 6 (DR6).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr6 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr6, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Debug Register 7 (DR7).

-

-  Reads and returns the current value of DR7. This function is only available

-  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

-  X64.

-

-  @return The value of Debug Register 7 (DR7).

-

-**/

-UINTN

-EFIAPI

-AsmReadDr7 (

-  VOID

-  )

-{

-  UINTN Data;

-

-  __asm__ __volatile__ (

-    "mov  %%dr7, %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Writes a value to Debug Register 0 (DR0).

-

-  Writes and returns a new value to DR0. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr0 The value to write to Dr0.

-

-  @return The value written to Debug Register 0 (DR0).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr0 (

-  UINTN  Dr0

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr0"

-    :

-    : "r" (Dr0)

-    );

-  return Dr0;

-}

-

-

-/**

-  Writes a value to Debug Register 1 (DR1).

-

-  Writes and returns a new value to DR1. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr1 The value to write to Dr1.

-

-  @return The value written to Debug Register 1 (DR1).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr1 (

-  UINTN  Dr1

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr1"

-    :

-    : "r" (Dr1)

-    );

-  return Dr1;

-}

-

-

-/**

-  Writes a value to Debug Register 2 (DR2).

-

-  Writes and returns a new value to DR2. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr2 The value to write to Dr2.

-

-  @return The value written to Debug Register 2 (DR2).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr2 (

-  UINTN  Dr2

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr2"

-    :

-    : "r" (Dr2)

-    );

-  return Dr2;

-}

-

-

-/**

-  Writes a value to Debug Register 3 (DR3).

-

-  Writes and returns a new value to DR3. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr3 The value to write to Dr3.

-

-  @return The value written to Debug Register 3 (DR3).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr3 (

-  UINTN  Dr3

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr3"

-    :

-    : "r" (Dr3)

-    );

-  return Dr3;

-}

-

-

-/**

-  Writes a value to Debug Register 4 (DR4).

-

-  Writes and returns a new value to DR4. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr4 The value to write to Dr4.

-

-  @return The value written to Debug Register 4 (DR4).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr4 (

-  UINTN  Dr4

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr4"

-    :

-    : "r" (Dr4)

-    );

-  return Dr4;

-}

-

-

-/**

-  Writes a value to Debug Register 5 (DR5).

-

-  Writes and returns a new value to DR5. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr5 The value to write to Dr5.

-

-  @return The value written to Debug Register 5 (DR5).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr5 (

-  UINTN  Dr5

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr5"

-    :

-    : "r" (Dr5)

-    );

-  return Dr5;

-}

-

-

-/**

-  Writes a value to Debug Register 6 (DR6).

-

-  Writes and returns a new value to DR6. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr6 The value to write to Dr6.

-

-  @return The value written to Debug Register 6 (DR6).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr6 (

-  UINTN  Dr6

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr6"

-    :

-    : "r" (Dr6)

-    );

-  return Dr6;

-}

-

-

-/**

-  Writes a value to Debug Register 7 (DR7).

-

-  Writes and returns a new value to DR7. This function is only available on

-  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

-

-  @param  Dr7 The value to write to Dr7.

-

-  @return The value written to Debug Register 7 (DR7).

-

-**/

-UINTN

-EFIAPI

-AsmWriteDr7 (

-  UINTN  Dr7

-  )

-{

-  __asm__ __volatile__ (

-    "mov  %0, %%dr7"

-    :

-    : "r" (Dr7)

-    );

-  return Dr7;

-}

-

-

-/**

-  Reads the current value of Code Segment Register (CS).

-

-  Reads and returns the current value of CS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of CS.

-

-**/

-UINT16

-EFIAPI

-AsmReadCs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov   %%cs, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Data Segment Register (DS).

-

-  Reads and returns the current value of DS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of DS.

-

-**/

-UINT16

-EFIAPI

-AsmReadDs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%ds, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Extra Segment Register (ES).

-

-  Reads and returns the current value of ES. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of ES.

-

-**/

-UINT16

-EFIAPI

-AsmReadEs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%es, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of FS Data Segment Register (FS).

-

-  Reads and returns the current value of FS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of FS.

-

-**/

-UINT16

-EFIAPI

-AsmReadFs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%fs, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of GS Data Segment Register (GS).

-

-  Reads and returns the current value of GS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of GS.

-

-**/

-UINT16

-EFIAPI

-AsmReadGs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%gs, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Stack Segment Register (SS).

-

-  Reads and returns the current value of SS. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of SS.

-

-**/

-UINT16

-EFIAPI

-AsmReadSs (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "mov  %%ds, %0"

-    :"=a" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current value of Task Register (TR).

-

-  Reads and returns the current value of TR. This function is only available on

-  IA-32 and X64.

-

-  @return The current value of TR.

-

-**/

-UINT16

-EFIAPI

-AsmReadTr (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "str  %0"

-    : "=r" (Data)

-    );

-

-  return Data;

-}

-

-

-/**

-  Reads the current Global Descriptor Table Register(GDTR) descriptor.

-

-  Reads and returns the current GDTR descriptor and returns it in Gdtr. This

-  function is only available on IA-32 and X64.

-

-  @param  Gdtr  The pointer to a GDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86ReadGdtr (

-  OUT     IA32_DESCRIPTOR           *Gdtr

-  )

-{

-  __asm__ __volatile__ (

-    "sgdt %0"

-    : "=m" (*Gdtr)

-    );

-}

-

-

-/**

-  Writes the current Global Descriptor Table Register (GDTR) descriptor.

-

-  Writes and the current GDTR descriptor specified by Gdtr. This function is

-  only available on IA-32 and X64.

-

-  @param  Gdtr  The pointer to a GDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86WriteGdtr (

-  IN      CONST IA32_DESCRIPTOR     *Gdtr

-  )

-{

-  __asm__ __volatile__ (

-    "lgdt %0"

-    :

-    : "m" (*Gdtr)

-    );

-

-}

-

-

-/**

-  Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.

-

-  Reads and returns the current IDTR descriptor and returns it in Idtr. This

-  function is only available on IA-32 and X64.

-

-  @param  Idtr  The pointer to a IDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86ReadIdtr (

-  OUT     IA32_DESCRIPTOR           *Idtr

-  )

-{

-  __asm__ __volatile__ (

-    "sidt  %0"

-    : "=m" (*Idtr)

-    );

-}

-

-

-/**

-  Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.

-

-  Writes the current IDTR descriptor and returns it in Idtr. This function is

-  only available on IA-32 and X64.

-

-  @param  Idtr  The pointer to a IDTR descriptor.

-

-**/

-VOID

-EFIAPI

-InternalX86WriteIdtr (

-  IN      CONST IA32_DESCRIPTOR     *Idtr

-  )

-{

-  __asm__ __volatile__ (

-    "lidt %0"

-    :

-    : "m" (*Idtr)

-    );

-}

-

-

-/**

-  Reads the current Local Descriptor Table Register(LDTR) selector.

-

-  Reads and returns the current 16-bit LDTR descriptor value. This function is

-  only available on IA-32 and X64.

-

-  @return The current selector of LDT.

-

-**/

-UINT16

-EFIAPI

-AsmReadLdtr (

-  VOID

-  )

-{

-  UINT16  Data;

-

-  __asm__ __volatile__ (

-    "sldt  %0"

-    : "=g" (Data)   // %0

-    );

-

-  return Data;

-}

-

-

-/**

-  Writes the current Local Descriptor Table Register (GDTR) selector.

-

-  Writes and the current LDTR descriptor specified by Ldtr. This function is

-  only available on IA-32 and X64.

-

-  @param  Ldtr  16-bit LDTR selector value.

-

-**/

-VOID

-EFIAPI

-AsmWriteLdtr (

-  IN      UINT16                    Ldtr

-  )

-{

-  __asm__ __volatile__ (

-    "lldtw  %0"

-    :

-    : "g" (Ldtr)   // %0

-    );

-}

-

-

 /**

   Save the current floating point/SSE/SSE2 context to a buffer.

 

@@ -1630,171 +560,3 @@ AsmReadTsc (
 

   return (((UINT64)HiData) << 32) | LowData;

 }

-

-

-/**

-  Reads the current value of a Performance Counter (PMC).

-

-  Reads and returns the current value of performance counter specified by

-  Index. This function is only available on IA-32 and X64.

-

-  @param  Index The 32-bit Performance Counter index to read.

-

-  @return The value of the PMC specified by Index.

-

-**/

-UINT64

-EFIAPI

-AsmReadPmc (

-  IN      UINT32                    Index

-  )

-{

-  UINT32  LowData;

-  UINT32  HiData;

-

-  __asm__ __volatile__ (

-    "rdpmc"

-    : "=a" (LowData),

-      "=d" (HiData)

-    : "c"  (Index)

-    );

-

-  return (((UINT64)HiData) << 32) | LowData;

-}

-

-

-/**

-  Sets up a monitor buffer that is used by AsmMwait().

-

-  Executes a MONITOR instruction with the register state specified by Eax, Ecx

-  and Edx. Returns Eax. This function is only available on IA-32 and X64.

-

-  @param  Eax The value to load into EAX or RAX before executing the MONITOR

-              instruction.

-  @param  Ecx The value to load into ECX or RCX before executing the MONITOR

-              instruction.

-  @param  Edx The value to load into EDX or RDX before executing the MONITOR

-              instruction.

-

-  @return Eax

-

-**/

-UINTN

-EFIAPI

-AsmMonitor (

-  IN      UINTN                     Eax,

-  IN      UINTN                     Ecx,

-  IN      UINTN                     Edx

-  )

-{

-  __asm__ __volatile__ (

-    "monitor"

-    :

-    : "a" (Eax),

-      "c" (Ecx),

-      "d" (Edx)

-    );

-

-  return Eax;

-}

-

-

-/**

-  Executes an MWAIT instruction.

-

-  Executes an MWAIT instruction with the register state specified by Eax and

-  Ecx. Returns Eax. This function is only available on IA-32 and X64.

-

-  @param  Eax The value to load into EAX or RAX before executing the MONITOR

-              instruction.

-  @param  Ecx The value to load into ECX or RCX before executing the MONITOR

-              instruction.

-

-  @return Eax

-

-**/

-UINTN

-EFIAPI

-AsmMwait (

-  IN      UINTN                     Eax,

-  IN      UINTN                     Ecx

-  )

-{

-  __asm__ __volatile__ (

-    "mwait"

-    :

-    : "a"  (Eax),

-      "c"  (Ecx)

-    );

-

-  return Eax;

-}

-

-

-/**

-  Executes a WBINVD instruction.

-

-  Executes a WBINVD instruction. This function is only available on IA-32 and

-  X64.

-

-**/

-VOID

-EFIAPI

-AsmWbinvd (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("wbinvd":::"memory");

-}

-

-

-/**

-  Executes a INVD instruction.

-

-  Executes a INVD instruction. This function is only available on IA-32 and

-  X64.

-

-**/

-VOID

-EFIAPI

-AsmInvd (

-  VOID

-  )

-{

-  __asm__ __volatile__ ("invd":::"memory");

-

-}

-

-

-/**

-  Flushes a cache line from all the instruction and data caches within the

-  coherency domain of the CPU.

-

-  Flushed the cache line specified by LinearAddress, and returns LinearAddress.

-  This function is only available on IA-32 and X64.

-

-  @param  LinearAddress The address of the cache line to flush. If the CPU is

-                        in a physical addressing mode, then LinearAddress is a

-                        physical address. If the CPU is in a virtual

-                        addressing mode, then LinearAddress is a virtual

-                        address.

-

-  @return LinearAddress

-**/

-VOID *

-EFIAPI

-AsmFlushCacheLine (

-  IN      VOID                      *LinearAddress

-  )

-{

-  __asm__ __volatile__ (

-    "clflush (%0)"

-    :

-    : "r" (LinearAddress)

-    : "memory"

-    );

-

-    return LinearAddress;

-}

-

-

diff --git a/MdePkg/Library/BaseLib/X64/GccInlinePriv.c b/MdePkg/Library/BaseLib/X64/GccInlinePriv.c
new file mode 100644
index 0000000000..98be19b3c7
--- /dev/null
+++ b/MdePkg/Library/BaseLib/X64/GccInlinePriv.c
@@ -0,0 +1,1234 @@
+/** @file

+  GCC inline implementation of BaseLib processor specific functions that use

+  privlidged instructions.

+

+  Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>

+  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>

+  SPDX-License-Identifier: BSD-2-Clause-Patent

+

+**/

+

+

+#include "BaseLibInternals.h"

+

+/**

+  Enables CPU interrupts.

+

+  Enables CPU interrupts.

+

+**/

+VOID

+EFIAPI

+EnableInterrupts (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("sti"::: "memory");

+}

+

+

+/**

+  Disables CPU interrupts.

+

+  Disables CPU interrupts.

+

+**/

+VOID

+EFIAPI

+DisableInterrupts (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("cli"::: "memory");

+}

+

+/**

+  Returns a 64-bit Machine Specific Register(MSR).

+

+  Reads and returns the 64-bit MSR specified by Index. No parameter checking is

+  performed on Index, and some Index values may cause CPU exceptions. The

+  caller must either guarantee that Index is valid, or the caller must set up

+  exception handlers to catch the exceptions. This function is only available

+  on IA-32 and X64.

+

+  @param  Index The 32-bit MSR index to read.

+

+  @return The value of the MSR identified by Index.

+

+**/

+UINT64

+EFIAPI

+AsmReadMsr64 (

+  IN      UINT32                    Index

+  )

+{

+  UINT32 LowData;

+  UINT32 HighData;

+

+  __asm__ __volatile__ (

+    "rdmsr"

+    : "=a" (LowData),   // %0

+      "=d" (HighData)   // %1

+    : "c"  (Index)      // %2

+    );

+

+  return (((UINT64)HighData) << 32) | LowData;

+}

+

+/**

+  Writes a 64-bit value to a Machine Specific Register(MSR), and returns the

+  value.

+

+  Writes the 64-bit value specified by Value to the MSR specified by Index. The

+  64-bit value written to the MSR is returned. No parameter checking is

+  performed on Index or Value, and some of these may cause CPU exceptions. The

+  caller must either guarantee that Index and Value are valid, or the caller

+  must establish proper exception handlers. This function is only available on

+  IA-32 and X64.

+

+  @param  Index The 32-bit MSR index to write.

+  @param  Value The 64-bit value to write to the MSR.

+

+  @return Value

+

+**/

+UINT64

+EFIAPI

+AsmWriteMsr64 (

+  IN      UINT32                    Index,

+  IN      UINT64                    Value

+  )

+{

+  UINT32 LowData;

+  UINT32 HighData;

+

+  LowData  = (UINT32)(Value);

+  HighData = (UINT32)(Value >> 32);

+

+  __asm__ __volatile__ (

+    "wrmsr"

+    :

+    : "c" (Index),

+      "a" (LowData),

+      "d" (HighData)

+    );

+

+  return Value;

+}

+

+/**

+  Reads the current value of the Control Register 0 (CR0).

+

+  Reads and returns the current value of CR0. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 0 (CR0).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr0 (

+  VOID

+  )

+{

+  UINTN   Data;

+

+  __asm__ __volatile__ (

+    "mov  %%cr0,%0"

+    : "=r" (Data)           // %0

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of the Control Register 2 (CR2).

+

+  Reads and returns the current value of CR2. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 2 (CR2).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr2 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%cr2,  %0"

+    : "=r" (Data)           // %0

+    );

+

+  return Data;

+}

+

+/**

+  Reads the current value of the Control Register 3 (CR3).

+

+  Reads and returns the current value of CR3. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 3 (CR3).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr3 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%cr3,  %0"

+    : "=r" (Data)           // %0

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of the Control Register 4 (CR4).

+

+  Reads and returns the current value of CR4. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of the Control Register 4 (CR4).

+

+**/

+UINTN

+EFIAPI

+AsmReadCr4 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%cr4,  %0"

+    : "=r" (Data)           // %0

+    );

+

+  return Data;

+}

+

+

+/**

+  Writes a value to Control Register 0 (CR0).

+

+  Writes and returns a new value to CR0. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr0 The value to write to CR0.

+

+  @return The value written to CR0.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr0 (

+  UINTN  Cr0

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%cr0"

+    :

+    : "r" (Cr0)

+    );

+  return Cr0;

+}

+

+

+/**

+  Writes a value to Control Register 2 (CR2).

+

+  Writes and returns a new value to CR2. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr2 The value to write to CR2.

+

+  @return The value written to CR2.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr2 (

+  UINTN  Cr2

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%cr2"

+    :

+    : "r" (Cr2)

+    );

+  return Cr2;

+}

+

+

+/**

+  Writes a value to Control Register 3 (CR3).

+

+  Writes and returns a new value to CR3. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr3 The value to write to CR3.

+

+  @return The value written to CR3.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr3 (

+  UINTN  Cr3

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%cr3"

+    :

+    : "r" (Cr3)

+    );

+  return Cr3;

+}

+

+

+/**

+  Writes a value to Control Register 4 (CR4).

+

+  Writes and returns a new value to CR4. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Cr4 The value to write to CR4.

+

+  @return The value written to CR4.

+

+**/

+UINTN

+EFIAPI

+AsmWriteCr4 (

+  UINTN  Cr4

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%cr4"

+    :

+    : "r" (Cr4)

+    );

+  return Cr4;

+}

+

+

+/**

+  Reads the current value of Debug Register 0 (DR0).

+

+  Reads and returns the current value of DR0. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 0 (DR0).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr0 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr0, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 1 (DR1).

+

+  Reads and returns the current value of DR1. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 1 (DR1).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr1 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr1, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 2 (DR2).

+

+  Reads and returns the current value of DR2. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 2 (DR2).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr2 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr2, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 3 (DR3).

+

+  Reads and returns the current value of DR3. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 3 (DR3).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr3 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr3, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 4 (DR4).

+

+  Reads and returns the current value of DR4. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 4 (DR4).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr4 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr4, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 5 (DR5).

+

+  Reads and returns the current value of DR5. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 5 (DR5).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr5 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr5, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 6 (DR6).

+

+  Reads and returns the current value of DR6. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 6 (DR6).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr6 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr6, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Debug Register 7 (DR7).

+

+  Reads and returns the current value of DR7. This function is only available

+  on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on

+  X64.

+

+  @return The value of Debug Register 7 (DR7).

+

+**/

+UINTN

+EFIAPI

+AsmReadDr7 (

+  VOID

+  )

+{

+  UINTN Data;

+

+  __asm__ __volatile__ (

+    "mov  %%dr7, %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Writes a value to Debug Register 0 (DR0).

+

+  Writes and returns a new value to DR0. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr0 The value to write to Dr0.

+

+  @return The value written to Debug Register 0 (DR0).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr0 (

+  UINTN  Dr0

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr0"

+    :

+    : "r" (Dr0)

+    );

+  return Dr0;

+}

+

+

+/**

+  Writes a value to Debug Register 1 (DR1).

+

+  Writes and returns a new value to DR1. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr1 The value to write to Dr1.

+

+  @return The value written to Debug Register 1 (DR1).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr1 (

+  UINTN  Dr1

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr1"

+    :

+    : "r" (Dr1)

+    );

+  return Dr1;

+}

+

+

+/**

+  Writes a value to Debug Register 2 (DR2).

+

+  Writes and returns a new value to DR2. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr2 The value to write to Dr2.

+

+  @return The value written to Debug Register 2 (DR2).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr2 (

+  UINTN  Dr2

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr2"

+    :

+    : "r" (Dr2)

+    );

+  return Dr2;

+}

+

+

+/**

+  Writes a value to Debug Register 3 (DR3).

+

+  Writes and returns a new value to DR3. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr3 The value to write to Dr3.

+

+  @return The value written to Debug Register 3 (DR3).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr3 (

+  UINTN  Dr3

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr3"

+    :

+    : "r" (Dr3)

+    );

+  return Dr3;

+}

+

+

+/**

+  Writes a value to Debug Register 4 (DR4).

+

+  Writes and returns a new value to DR4. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr4 The value to write to Dr4.

+

+  @return The value written to Debug Register 4 (DR4).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr4 (

+  UINTN  Dr4

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr4"

+    :

+    : "r" (Dr4)

+    );

+  return Dr4;

+}

+

+

+/**

+  Writes a value to Debug Register 5 (DR5).

+

+  Writes and returns a new value to DR5. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr5 The value to write to Dr5.

+

+  @return The value written to Debug Register 5 (DR5).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr5 (

+  UINTN  Dr5

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr5"

+    :

+    : "r" (Dr5)

+    );

+  return Dr5;

+}

+

+

+/**

+  Writes a value to Debug Register 6 (DR6).

+

+  Writes and returns a new value to DR6. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr6 The value to write to Dr6.

+

+  @return The value written to Debug Register 6 (DR6).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr6 (

+  UINTN  Dr6

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr6"

+    :

+    : "r" (Dr6)

+    );

+  return Dr6;

+}

+

+

+/**

+  Writes a value to Debug Register 7 (DR7).

+

+  Writes and returns a new value to DR7. This function is only available on

+  IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.

+

+  @param  Dr7 The value to write to Dr7.

+

+  @return The value written to Debug Register 7 (DR7).

+

+**/

+UINTN

+EFIAPI

+AsmWriteDr7 (

+  UINTN  Dr7

+  )

+{

+  __asm__ __volatile__ (

+    "mov  %0, %%dr7"

+    :

+    : "r" (Dr7)

+    );

+  return Dr7;

+}

+

+

+/**

+  Reads the current value of Code Segment Register (CS).

+

+  Reads and returns the current value of CS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of CS.

+

+**/

+UINT16

+EFIAPI

+AsmReadCs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov   %%cs, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Data Segment Register (DS).

+

+  Reads and returns the current value of DS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of DS.

+

+**/

+UINT16

+EFIAPI

+AsmReadDs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%ds, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Extra Segment Register (ES).

+

+  Reads and returns the current value of ES. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of ES.

+

+**/

+UINT16

+EFIAPI

+AsmReadEs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%es, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of FS Data Segment Register (FS).

+

+  Reads and returns the current value of FS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of FS.

+

+**/

+UINT16

+EFIAPI

+AsmReadFs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%fs, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of GS Data Segment Register (GS).

+

+  Reads and returns the current value of GS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of GS.

+

+**/

+UINT16

+EFIAPI

+AsmReadGs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%gs, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Stack Segment Register (SS).

+

+  Reads and returns the current value of SS. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of SS.

+

+**/

+UINT16

+EFIAPI

+AsmReadSs (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "mov  %%ds, %0"

+    :"=a" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current value of Task Register (TR).

+

+  Reads and returns the current value of TR. This function is only available on

+  IA-32 and X64.

+

+  @return The current value of TR.

+

+**/

+UINT16

+EFIAPI

+AsmReadTr (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "str  %0"

+    : "=r" (Data)

+    );

+

+  return Data;

+}

+

+

+/**

+  Reads the current Global Descriptor Table Register(GDTR) descriptor.

+

+  Reads and returns the current GDTR descriptor and returns it in Gdtr. This

+  function is only available on IA-32 and X64.

+

+  @param  Gdtr  The pointer to a GDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86ReadGdtr (

+  OUT     IA32_DESCRIPTOR           *Gdtr

+  )

+{

+  __asm__ __volatile__ (

+    "sgdt %0"

+    : "=m" (*Gdtr)

+    );

+}

+

+

+/**

+  Writes the current Global Descriptor Table Register (GDTR) descriptor.

+

+  Writes and the current GDTR descriptor specified by Gdtr. This function is

+  only available on IA-32 and X64.

+

+  @param  Gdtr  The pointer to a GDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86WriteGdtr (

+  IN      CONST IA32_DESCRIPTOR     *Gdtr

+  )

+{

+  __asm__ __volatile__ (

+    "lgdt %0"

+    :

+    : "m" (*Gdtr)

+    );

+

+}

+

+

+/**

+  Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.

+

+  Reads and returns the current IDTR descriptor and returns it in Idtr. This

+  function is only available on IA-32 and X64.

+

+  @param  Idtr  The pointer to a IDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86ReadIdtr (

+  OUT     IA32_DESCRIPTOR           *Idtr

+  )

+{

+  __asm__ __volatile__ (

+    "sidt  %0"

+    : "=m" (*Idtr)

+    );

+}

+

+

+/**

+  Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.

+

+  Writes the current IDTR descriptor and returns it in Idtr. This function is

+  only available on IA-32 and X64.

+

+  @param  Idtr  The pointer to a IDTR descriptor.

+

+**/

+VOID

+EFIAPI

+InternalX86WriteIdtr (

+  IN      CONST IA32_DESCRIPTOR     *Idtr

+  )

+{

+  __asm__ __volatile__ (

+    "lidt %0"

+    :

+    : "m" (*Idtr)

+    );

+}

+

+

+/**

+  Reads the current Local Descriptor Table Register(LDTR) selector.

+

+  Reads and returns the current 16-bit LDTR descriptor value. This function is

+  only available on IA-32 and X64.

+

+  @return The current selector of LDT.

+

+**/

+UINT16

+EFIAPI

+AsmReadLdtr (

+  VOID

+  )

+{

+  UINT16  Data;

+

+  __asm__ __volatile__ (

+    "sldt  %0"

+    : "=g" (Data)   // %0

+    );

+

+  return Data;

+}

+

+

+/**

+  Writes the current Local Descriptor Table Register (GDTR) selector.

+

+  Writes and the current LDTR descriptor specified by Ldtr. This function is

+  only available on IA-32 and X64.

+

+  @param  Ldtr  16-bit LDTR selector value.

+

+**/

+VOID

+EFIAPI

+AsmWriteLdtr (

+  IN      UINT16                    Ldtr

+  )

+{

+  __asm__ __volatile__ (

+    "lldtw  %0"

+    :

+    : "g" (Ldtr)   // %0

+    );

+}

+

+/**

+  Reads the current value of a Performance Counter (PMC).

+

+  Reads and returns the current value of performance counter specified by

+  Index. This function is only available on IA-32 and X64.

+

+  @param  Index The 32-bit Performance Counter index to read.

+

+  @return The value of the PMC specified by Index.

+

+**/

+UINT64

+EFIAPI

+AsmReadPmc (

+  IN      UINT32                    Index

+  )

+{

+  UINT32  LowData;

+  UINT32  HiData;

+

+  __asm__ __volatile__ (

+    "rdpmc"

+    : "=a" (LowData),

+      "=d" (HiData)

+    : "c"  (Index)

+    );

+

+  return (((UINT64)HiData) << 32) | LowData;

+}

+

+/**

+  Sets up a monitor buffer that is used by AsmMwait().

+

+  Executes a MONITOR instruction with the register state specified by Eax, Ecx

+  and Edx. Returns Eax. This function is only available on IA-32 and X64.

+

+  @param  Eax The value to load into EAX or RAX before executing the MONITOR

+              instruction.

+  @param  Ecx The value to load into ECX or RCX before executing the MONITOR

+              instruction.

+  @param  Edx The value to load into EDX or RDX before executing the MONITOR

+              instruction.

+

+  @return Eax

+

+**/

+UINTN

+EFIAPI

+AsmMonitor (

+  IN      UINTN                     Eax,

+  IN      UINTN                     Ecx,

+  IN      UINTN                     Edx

+  )

+{

+  __asm__ __volatile__ (

+    "monitor"

+    :

+    : "a" (Eax),

+      "c" (Ecx),

+      "d" (Edx)

+    );

+

+  return Eax;

+}

+

+/**

+  Executes an MWAIT instruction.

+

+  Executes an MWAIT instruction with the register state specified by Eax and

+  Ecx. Returns Eax. This function is only available on IA-32 and X64.

+

+  @param  Eax The value to load into EAX or RAX before executing the MONITOR

+              instruction.

+  @param  Ecx The value to load into ECX or RCX before executing the MONITOR

+              instruction.

+

+  @return Eax

+

+**/

+UINTN

+EFIAPI

+AsmMwait (

+  IN      UINTN                     Eax,

+  IN      UINTN                     Ecx

+  )

+{

+  __asm__ __volatile__ (

+    "mwait"

+    :

+    : "a"  (Eax),

+      "c"  (Ecx)

+    );

+

+  return Eax;

+}

+

+/**

+  Executes a WBINVD instruction.

+

+  Executes a WBINVD instruction. This function is only available on IA-32 and

+  X64.

+

+**/

+VOID

+EFIAPI

+AsmWbinvd (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("wbinvd":::"memory");

+}

+

+/**

+  Executes a INVD instruction.

+

+  Executes a INVD instruction. This function is only available on IA-32 and

+  X64.

+

+**/

+VOID

+EFIAPI

+AsmInvd (

+  VOID

+  )

+{

+  __asm__ __volatile__ ("invd":::"memory");

+

+}

+

+

+/**

+  Flushes a cache line from all the instruction and data caches within the

+  coherency domain of the CPU.

+

+  Flushed the cache line specified by LinearAddress, and returns LinearAddress.

+  This function is only available on IA-32 and X64.

+

+  @param  LinearAddress The address of the cache line to flush. If the CPU is

+                        in a physical addressing mode, then LinearAddress is a

+                        physical address. If the CPU is in a virtual

+                        addressing mode, then LinearAddress is a virtual

+                        address.

+

+  @return LinearAddress

+**/

+VOID *

+EFIAPI

+AsmFlushCacheLine (

+  IN      VOID                      *LinearAddress

+  )

+{

+  __asm__ __volatile__ (

+    "clflush (%0)"

+    :

+    : "r" (LinearAddress)

+    : "memory"

+    );

+

+    return LinearAddress;

+}