[v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

[edk2-devel] [PATCH v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

Posted by Wu, Jiaxin 3 years ago

https://bugzilla.tianocore.org/show_bug.cgi?id=3284

This patch is to support Extended Control Register(XCR) Read
and Write.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Zhang Hongbin1 <hongbin1.zhang@intel.com>
Signed-off-by: Jiaxin Wu <Jiaxin.wu@intel.com>
---
 MdePkg/Include/Library/BaseLib.h          | 46 ++++++++++++++++++++++++++++++-
 MdePkg/Library/BaseLib/BaseLib.inf        |  4 ++-
 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm  | 31 +++++++++++++++++++++
 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm | 34 +++++++++++++++++++++++
 4 files changed, 113 insertions(+), 2 deletions(-)
 create mode 100644 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
 create mode 100644 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm

diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index 1171a0ffb5..c51633ad73 100644
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -1,10 +1,10 @@
 /** @file
   Provides string functions, linked list functions, math functions, synchronization
   functions, file path functions, and CPU architecture-specific functions.
 
-Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
 Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
 Copyright (c) Microsoft Corporation.<BR>
 Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
 
 SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -7493,7 +7493,51 @@ PatchInstructionX86 (
   OUT X86_ASSEMBLY_PATCH_LABEL *InstructionEnd,
   IN  UINT64                   PatchValue,
   IN  UINTN                    ValueSize
   );
 
+/**
+  Returns a 64-bit Extended Control Register(XCR).
+
+  Reads and returns the 64-bit XCR 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 XCR index to read.
+
+  @return The value of the XCR identified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadXcr (
+  IN UINT32  Index
+  );
+
+/**
+  Writes a 64-bit value to a Extended Control Register(XCR), and returns the
+  value.
+
+  Writes the 64-bit value specified by Value to the XCR specified by Index. The
+  64-bit value written to the XCR 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 XCR index to write.
+  @param  Value The 64-bit value to write to the XCR.
+
+  @return Value
+
+**/
+UINT64
+EFIAPI
+AsmWriteXcr (
+  IN UINT32  Index,
+  IN UINT64  Value
+  );
+
 #endif // defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
 #endif // !defined (__BASE_LIB__)
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 3b85c56c3c..e62031ea11 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -1,9 +1,9 @@
 ## @file
 #  Base Library implementation.
 #
-#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2021, 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>
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -63,10 +63,12 @@
   BaseLibInternals.h
 
 [Sources.Ia32]
   Ia32/WriteTr.nasm
   Ia32/Lfence.nasm
+  Ia32/ReadXcr.nasm
+  Ia32/WriteXcr.nasm
 
   Ia32/Wbinvd.c | MSFT
   Ia32/WriteMm7.c | MSFT
   Ia32/WriteMm6.c | MSFT
   Ia32/WriteMm5.c | MSFT
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
new file mode 100644
index 0000000000..5d50d8ba01
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
@@ -0,0 +1,31 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+;   ReadXcr.Asm
+;
+; Abstract:
+;
+;   AsmReadXcr function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; AsmReadXcr (
+;   IN UINT32  Index
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmReadXcr)
+ASM_PFX(AsmReadXcr):
+    mov     ecx, [esp + 4]
+    xgetbv
+    ret
\ No newline at end of file
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
new file mode 100644
index 0000000000..009d41864b
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
@@ -0,0 +1,34 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+;   WriteXcr.nasm
+;
+; Abstract:
+;
+;   AsmWriteXcr function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; AsmWriteXcr (
+;   IN UINT32  Index,
+;   IN UINT64  Value
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmWriteXcr)
+ASM_PFX(AsmWriteXcr):
+    mov     edx, [esp + 12]
+    mov     eax, [esp + 8]
+    mov     ecx, [esp + 4]
+    xsetbv
+    ret
\ No newline at end of file
-- 
2.16.2.windows.1



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回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

Posted by gaoliming 3 years ago

Where is X64 implementation for this new API?

> -----邮件原件-----
> 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu, Jiaxin
> 发送时间: 2021年3月31日 9:20
> 收件人: devel@edk2.groups.io
> 抄送: Michael D Kinney <michael.d.kinney@intel.com>; Liming Gao
> <gaoliming@byosoft.com.cn>; Zhiguang Liu <zhiguang.liu@intel.com>; Zhang
> Hongbin1 <hongbin1.zhang@intel.com>
> 主题: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> Register(XCR) Read and Write.
> 
> https://bugzilla.tianocore.org/show_bug.cgi?id=3284
> 
> This patch is to support Extended Control Register(XCR) Read
> and Write.
> 
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> Signed-off-by: Zhang Hongbin1 <hongbin1.zhang@intel.com>
> Signed-off-by: Jiaxin Wu <Jiaxin.wu@intel.com>
> ---
>  MdePkg/Include/Library/BaseLib.h          | 46
> ++++++++++++++++++++++++++++++-
>  MdePkg/Library/BaseLib/BaseLib.inf        |  4 ++-
>  MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm  | 31
> +++++++++++++++++++++
>  MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm | 34
> +++++++++++++++++++++++
>  4 files changed, 113 insertions(+), 2 deletions(-)
>  create mode 100644 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
>  create mode 100644 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> 
> diff --git a/MdePkg/Include/Library/BaseLib.h
> b/MdePkg/Include/Library/BaseLib.h
> index 1171a0ffb5..c51633ad73 100644
> --- a/MdePkg/Include/Library/BaseLib.h
> +++ b/MdePkg/Include/Library/BaseLib.h
> @@ -1,10 +1,10 @@
>  /** @file
>    Provides string functions, linked list functions, math functions,
> synchronization
>    functions, file path functions, and CPU architecture-specific
functions.
> 
> -Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
>  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
>  Copyright (c) Microsoft Corporation.<BR>
>  Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP.
All
> rights reserved.<BR>
> 
>  SPDX-License-Identifier: BSD-2-Clause-Patent
> @@ -7493,7 +7493,51 @@ PatchInstructionX86 (
>    OUT X86_ASSEMBLY_PATCH_LABEL *InstructionEnd,
>    IN  UINT64                   PatchValue,
>    IN  UINTN                    ValueSize
>    );
> 
> +/**
> +  Returns a 64-bit Extended Control Register(XCR).
> +
> +  Reads and returns the 64-bit XCR 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 XCR index to read.
> +
> +  @return The value of the XCR identified by Index.
> +
> +**/
> +UINT64
> +EFIAPI
> +AsmReadXcr (
> +  IN UINT32  Index
> +  );
> +
> +/**
> +  Writes a 64-bit value to a Extended Control Register(XCR), and returns
the
> +  value.
> +
> +  Writes the 64-bit value specified by Value to the XCR specified by
Index.
> The
> +  64-bit value written to the XCR 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 XCR index to write.
> +  @param  Value The 64-bit value to write to the XCR.
> +
> +  @return Value
> +
> +**/
> +UINT64
> +EFIAPI
> +AsmWriteXcr (
> +  IN UINT32  Index,
> +  IN UINT64  Value
> +  );
> +
>  #endif // defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
>  #endif // !defined (__BASE_LIB__)
> diff --git a/MdePkg/Library/BaseLib/BaseLib.inf
> b/MdePkg/Library/BaseLib/BaseLib.inf
> index 3b85c56c3c..e62031ea11 100644
> --- a/MdePkg/Library/BaseLib/BaseLib.inf
> +++ b/MdePkg/Library/BaseLib/BaseLib.inf
> @@ -1,9 +1,9 @@
>  ## @file
>  #  Base Library implementation.
>  #
> -#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.<BR>
> +#  Copyright (c) 2007 - 2021, 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>
>  #
>  #  SPDX-License-Identifier: BSD-2-Clause-Patent
> @@ -63,10 +63,12 @@
>    BaseLibInternals.h
> 
>  [Sources.Ia32]
>    Ia32/WriteTr.nasm
>    Ia32/Lfence.nasm
> +  Ia32/ReadXcr.nasm
> +  Ia32/WriteXcr.nasm
> 
>    Ia32/Wbinvd.c | MSFT
>    Ia32/WriteMm7.c | MSFT
>    Ia32/WriteMm6.c | MSFT
>    Ia32/WriteMm5.c | MSFT
> diff --git a/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> new file mode 100644
> index 0000000000..5d50d8ba01
> --- /dev/null
> +++ b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> @@ -0,0 +1,31 @@
>
+;--------------------------------------------------------------------------
----
> +;
> +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +; SPDX-License-Identifier: BSD-2-Clause-Patent
> +;
> +; Module Name:
> +;
> +;   ReadXcr.Asm
> +;
> +; Abstract:
> +;
> +;   AsmReadXcr function
> +;
> +; Notes:
> +;
>
+;--------------------------------------------------------------------------
----
> +
> +    SECTION .text
> +
>
+;--------------------------------------------------------------------------
----
> +; UINT64
> +; EFIAPI
> +; AsmReadXcr (
> +;   IN UINT32  Index
> +;   );
>
+;--------------------------------------------------------------------------
----
> +global ASM_PFX(AsmReadXcr)
> +ASM_PFX(AsmReadXcr):
> +    mov     ecx, [esp + 4]
> +    xgetbv
> +    ret
> \ No newline at end of file
> diff --git a/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> new file mode 100644
> index 0000000000..009d41864b
> --- /dev/null
> +++ b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> @@ -0,0 +1,34 @@
>
+;--------------------------------------------------------------------------
----
> +;
> +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +; SPDX-License-Identifier: BSD-2-Clause-Patent
> +;
> +; Module Name:
> +;
> +;   WriteXcr.nasm
> +;
> +; Abstract:
> +;
> +;   AsmWriteXcr function
> +;
> +; Notes:
> +;
>
+;--------------------------------------------------------------------------
----
> +
> +    SECTION .text
> +
>
+;--------------------------------------------------------------------------
----
> +; UINT64
> +; EFIAPI
> +; AsmWriteXcr (
> +;   IN UINT32  Index,
> +;   IN UINT64  Value
> +;   );
>
+;--------------------------------------------------------------------------
----
> +global ASM_PFX(AsmWriteXcr)
> +ASM_PFX(AsmWriteXcr):
> +    mov     edx, [esp + 12]
> +    mov     eax, [esp + 8]
> +    mov     ecx, [esp + 4]
> +    xsetbv
> +    ret
> \ No newline at end of file
> --
> 2.16.2.windows.1
> 
> 
> 
> 
> 





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Re: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

Posted by Wu, Jiaxin 3 years ago

Actually, the implementation under ia32 should be also workable for X64, I just put it under ia32.

Liming, do you have suggestion where can we place the code?

Thanks,
Jiaxin

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of gaoliming
> Sent: Wednesday, March 31, 2021 9:51 AM
> To: devel@edk2.groups.io; Wu, Jiaxin <jiaxin.wu@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> Register(XCR) Read and Write.
> 
> Where is X64 implementation for this new API?
> 
> > -----邮件原件-----
> > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu, Jiaxin
> > 发送时间: 2021年3月31日 9:20
> > 收件人: devel@edk2.groups.io
> > 抄送: Michael D Kinney <michael.d.kinney@intel.com>; Liming Gao
> > <gaoliming@byosoft.com.cn>; Zhiguang Liu <zhiguang.liu@intel.com>; Zhang
> > Hongbin1 <hongbin1.zhang@intel.com>
> > 主题: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > Register(XCR) Read and Write.
> >
> > https://bugzilla.tianocore.org/show_bug.cgi?id=3284
> >
> > This patch is to support Extended Control Register(XCR) Read
> > and Write.
> >
> > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > Cc: Liming Gao <gaoliming@byosoft.com.cn>
> > Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> > Signed-off-by: Zhang Hongbin1 <hongbin1.zhang@intel.com>
> > Signed-off-by: Jiaxin Wu <Jiaxin.wu@intel.com>
> > ---
> >  MdePkg/Include/Library/BaseLib.h          | 46
> > ++++++++++++++++++++++++++++++-
> >  MdePkg/Library/BaseLib/BaseLib.inf        |  4 ++-
> >  MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm  | 31
> > +++++++++++++++++++++
> >  MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm | 34
> > +++++++++++++++++++++++
> >  4 files changed, 113 insertions(+), 2 deletions(-)
> >  create mode 100644 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> >  create mode 100644 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> >
> > diff --git a/MdePkg/Include/Library/BaseLib.h
> > b/MdePkg/Include/Library/BaseLib.h
> > index 1171a0ffb5..c51633ad73 100644
> > --- a/MdePkg/Include/Library/BaseLib.h
> > +++ b/MdePkg/Include/Library/BaseLib.h
> > @@ -1,10 +1,10 @@
> >  /** @file
> >    Provides string functions, linked list functions, math functions,
> > synchronization
> >    functions, file path functions, and CPU architecture-specific
> functions.
> >
> > -Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
> > +Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
> >  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> >  Copyright (c) Microsoft Corporation.<BR>
> >  Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP.
> All
> > rights reserved.<BR>
> >
> >  SPDX-License-Identifier: BSD-2-Clause-Patent
> > @@ -7493,7 +7493,51 @@ PatchInstructionX86 (
> >    OUT X86_ASSEMBLY_PATCH_LABEL *InstructionEnd,
> >    IN  UINT64                   PatchValue,
> >    IN  UINTN                    ValueSize
> >    );
> >
> > +/**
> > +  Returns a 64-bit Extended Control Register(XCR).
> > +
> > +  Reads and returns the 64-bit XCR 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 XCR index to read.
> > +
> > +  @return The value of the XCR identified by Index.
> > +
> > +**/
> > +UINT64
> > +EFIAPI
> > +AsmReadXcr (
> > +  IN UINT32  Index
> > +  );
> > +
> > +/**
> > +  Writes a 64-bit value to a Extended Control Register(XCR), and returns
> the
> > +  value.
> > +
> > +  Writes the 64-bit value specified by Value to the XCR specified by
> Index.
> > The
> > +  64-bit value written to the XCR 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 XCR index to write.
> > +  @param  Value The 64-bit value to write to the XCR.
> > +
> > +  @return Value
> > +
> > +**/
> > +UINT64
> > +EFIAPI
> > +AsmWriteXcr (
> > +  IN UINT32  Index,
> > +  IN UINT64  Value
> > +  );
> > +
> >  #endif // defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
> >  #endif // !defined (__BASE_LIB__)
> > diff --git a/MdePkg/Library/BaseLib/BaseLib.inf
> > b/MdePkg/Library/BaseLib/BaseLib.inf
> > index 3b85c56c3c..e62031ea11 100644
> > --- a/MdePkg/Library/BaseLib/BaseLib.inf
> > +++ b/MdePkg/Library/BaseLib/BaseLib.inf
> > @@ -1,9 +1,9 @@
> >  ## @file
> >  #  Base Library implementation.
> >  #
> > -#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.<BR>
> > +#  Copyright (c) 2007 - 2021, 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>
> >  #
> >  #  SPDX-License-Identifier: BSD-2-Clause-Patent
> > @@ -63,10 +63,12 @@
> >    BaseLibInternals.h
> >
> >  [Sources.Ia32]
> >    Ia32/WriteTr.nasm
> >    Ia32/Lfence.nasm
> > +  Ia32/ReadXcr.nasm
> > +  Ia32/WriteXcr.nasm
> >
> >    Ia32/Wbinvd.c | MSFT
> >    Ia32/WriteMm7.c | MSFT
> >    Ia32/WriteMm6.c | MSFT
> >    Ia32/WriteMm5.c | MSFT
> > diff --git a/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > new file mode 100644
> > index 0000000000..5d50d8ba01
> > --- /dev/null
> > +++ b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > @@ -0,0 +1,31 @@
> >
> +;--------------------------------------------------------------------------
> ----
> > +;
> > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > +;
> > +; Module Name:
> > +;
> > +;   ReadXcr.Asm
> > +;
> > +; Abstract:
> > +;
> > +;   AsmReadXcr function
> > +;
> > +; Notes:
> > +;
> >
> +;--------------------------------------------------------------------------
> ----
> > +
> > +    SECTION .text
> > +
> >
> +;--------------------------------------------------------------------------
> ----
> > +; UINT64
> > +; EFIAPI
> > +; AsmReadXcr (
> > +;   IN UINT32  Index
> > +;   );
> >
> +;--------------------------------------------------------------------------
> ----
> > +global ASM_PFX(AsmReadXcr)
> > +ASM_PFX(AsmReadXcr):
> > +    mov     ecx, [esp + 4]
> > +    xgetbv
> > +    ret
> > \ No newline at end of file
> > diff --git a/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > new file mode 100644
> > index 0000000000..009d41864b
> > --- /dev/null
> > +++ b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > @@ -0,0 +1,34 @@
> >
> +;--------------------------------------------------------------------------
> ----
> > +;
> > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > +;
> > +; Module Name:
> > +;
> > +;   WriteXcr.nasm
> > +;
> > +; Abstract:
> > +;
> > +;   AsmWriteXcr function
> > +;
> > +; Notes:
> > +;
> >
> +;--------------------------------------------------------------------------
> ----
> > +
> > +    SECTION .text
> > +
> >
> +;--------------------------------------------------------------------------
> ----
> > +; UINT64
> > +; EFIAPI
> > +; AsmWriteXcr (
> > +;   IN UINT32  Index,
> > +;   IN UINT64  Value
> > +;   );
> >
> +;--------------------------------------------------------------------------
> ----
> > +global ASM_PFX(AsmWriteXcr)
> > +ASM_PFX(AsmWriteXcr):
> > +    mov     edx, [esp + 12]
> > +    mov     eax, [esp + 8]
> > +    mov     ecx, [esp + 4]
> > +    xsetbv
> > +    ret
> > \ No newline at end of file
> > --
> > 2.16.2.windows.1
> >
> >
> >
> >
> >
> 
> 
> 
> 
> 
> 
> 



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回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

Posted by gaoliming 3 years ago

Jiaxin:
  32bit function and 64bit function have the different calling convention.
Their assembly function can't be shared. 

  This new API interface is same to AsmWriteMsr64(). You can refer
AsmWriteMsr64() implementation in BaseLib. 

Thanks
Liming
> -----邮件原件-----
> 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu, Jiaxin
> 发送时间: 2021年3月31日 9:56
> 收件人: devel@edk2.groups.io; gaoliming@byosoft.com.cn
> 抄送: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> 主题: Re: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> Register(XCR) Read and Write.
> 
> Actually, the implementation under ia32 should be also workable for X64, I
> just put it under ia32.
> 
> Liming, do you have suggestion where can we place the code?
> 
> Thanks,
> Jiaxin
> 
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> gaoliming
> > Sent: Wednesday, March 31, 2021 9:51 AM
> > To: devel@edk2.groups.io; Wu, Jiaxin <jiaxin.wu@intel.com>
> > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> > <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> > Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > Register(XCR) Read and Write.
> >
> > Where is X64 implementation for this new API?
> >
> > > -----邮件原件-----
> > > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu,
> Jiaxin
> > > 发送时间: 2021年3月31日 9:20
> > > 收件人: devel@edk2.groups.io
> > > 抄送: Michael D Kinney <michael.d.kinney@intel.com>; Liming Gao
> > > <gaoliming@byosoft.com.cn>; Zhiguang Liu <zhiguang.liu@intel.com>;
> Zhang
> > > Hongbin1 <hongbin1.zhang@intel.com>
> > > 主题: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > > Register(XCR) Read and Write.
> > >
> > > https://bugzilla.tianocore.org/show_bug.cgi?id=3284
> > >
> > > This patch is to support Extended Control Register(XCR) Read
> > > and Write.
> > >
> > > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > > Cc: Liming Gao <gaoliming@byosoft.com.cn>
> > > Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> > > Signed-off-by: Zhang Hongbin1 <hongbin1.zhang@intel.com>
> > > Signed-off-by: Jiaxin Wu <Jiaxin.wu@intel.com>
> > > ---
> > >  MdePkg/Include/Library/BaseLib.h          | 46
> > > ++++++++++++++++++++++++++++++-
> > >  MdePkg/Library/BaseLib/BaseLib.inf        |  4 ++-
> > >  MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm  | 31
> > > +++++++++++++++++++++
> > >  MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm | 34
> > > +++++++++++++++++++++++
> > >  4 files changed, 113 insertions(+), 2 deletions(-)
> > >  create mode 100644 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > >  create mode 100644 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > >
> > > diff --git a/MdePkg/Include/Library/BaseLib.h
> > > b/MdePkg/Include/Library/BaseLib.h
> > > index 1171a0ffb5..c51633ad73 100644
> > > --- a/MdePkg/Include/Library/BaseLib.h
> > > +++ b/MdePkg/Include/Library/BaseLib.h
> > > @@ -1,10 +1,10 @@
> > >  /** @file
> > >    Provides string functions, linked list functions, math functions,
> > > synchronization
> > >    functions, file path functions, and CPU architecture-specific
> > functions.
> > >
> > > -Copyright (c) 2006 - 2019, Intel Corporation. All rights
reserved.<BR>
> > > +Copyright (c) 2006 - 2021, Intel Corporation. All rights
reserved.<BR>
> > >  Portions copyright (c) 2008 - 2009, Apple Inc. All rights
reserved.<BR>
> > >  Copyright (c) Microsoft Corporation.<BR>
> > >  Portions Copyright (c) 2020, Hewlett Packard Enterprise Development
> LP.
> > All
> > > rights reserved.<BR>
> > >
> > >  SPDX-License-Identifier: BSD-2-Clause-Patent
> > > @@ -7493,7 +7493,51 @@ PatchInstructionX86 (
> > >    OUT X86_ASSEMBLY_PATCH_LABEL *InstructionEnd,
> > >    IN  UINT64                   PatchValue,
> > >    IN  UINTN                    ValueSize
> > >    );
> > >
> > > +/**
> > > +  Returns a 64-bit Extended Control Register(XCR).
> > > +
> > > +  Reads and returns the 64-bit XCR 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 XCR index to read.
> > > +
> > > +  @return The value of the XCR identified by Index.
> > > +
> > > +**/
> > > +UINT64
> > > +EFIAPI
> > > +AsmReadXcr (
> > > +  IN UINT32  Index
> > > +  );
> > > +
> > > +/**
> > > +  Writes a 64-bit value to a Extended Control Register(XCR), and
returns
> > the
> > > +  value.
> > > +
> > > +  Writes the 64-bit value specified by Value to the XCR specified by
> > Index.
> > > The
> > > +  64-bit value written to the XCR 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 XCR index to write.
> > > +  @param  Value The 64-bit value to write to the XCR.
> > > +
> > > +  @return Value
> > > +
> > > +**/
> > > +UINT64
> > > +EFIAPI
> > > +AsmWriteXcr (
> > > +  IN UINT32  Index,
> > > +  IN UINT64  Value
> > > +  );
> > > +
> > >  #endif // defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
> > >  #endif // !defined (__BASE_LIB__)
> > > diff --git a/MdePkg/Library/BaseLib/BaseLib.inf
> > > b/MdePkg/Library/BaseLib/BaseLib.inf
> > > index 3b85c56c3c..e62031ea11 100644
> > > --- a/MdePkg/Library/BaseLib/BaseLib.inf
> > > +++ b/MdePkg/Library/BaseLib/BaseLib.inf
> > > @@ -1,9 +1,9 @@
> > >  ## @file
> > >  #  Base Library implementation.
> > >  #
> > > -#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.
<BR>
> > > +#  Copyright (c) 2007 - 2021, 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>
> > >  #
> > >  #  SPDX-License-Identifier: BSD-2-Clause-Patent
> > > @@ -63,10 +63,12 @@
> > >    BaseLibInternals.h
> > >
> > >  [Sources.Ia32]
> > >    Ia32/WriteTr.nasm
> > >    Ia32/Lfence.nasm
> > > +  Ia32/ReadXcr.nasm
> > > +  Ia32/WriteXcr.nasm
> > >
> > >    Ia32/Wbinvd.c | MSFT
> > >    Ia32/WriteMm7.c | MSFT
> > >    Ia32/WriteMm6.c | MSFT
> > >    Ia32/WriteMm5.c | MSFT
> > > diff --git a/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > new file mode 100644
> > > index 0000000000..5d50d8ba01
> > > --- /dev/null
> > > +++ b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > @@ -0,0 +1,31 @@
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +;
> > > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > > +;
> > > +; Module Name:
> > > +;
> > > +;   ReadXcr.Asm
> > > +;
> > > +; Abstract:
> > > +;
> > > +;   AsmReadXcr function
> > > +;
> > > +; Notes:
> > > +;
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +
> > > +    SECTION .text
> > > +
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +; UINT64
> > > +; EFIAPI
> > > +; AsmReadXcr (
> > > +;   IN UINT32  Index
> > > +;   );
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +global ASM_PFX(AsmReadXcr)
> > > +ASM_PFX(AsmReadXcr):
> > > +    mov     ecx, [esp + 4]
> > > +    xgetbv
> > > +    ret
> > > \ No newline at end of file
> > > diff --git a/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > new file mode 100644
> > > index 0000000000..009d41864b
> > > --- /dev/null
> > > +++ b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > @@ -0,0 +1,34 @@
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +;
> > > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > > +;
> > > +; Module Name:
> > > +;
> > > +;   WriteXcr.nasm
> > > +;
> > > +; Abstract:
> > > +;
> > > +;   AsmWriteXcr function
> > > +;
> > > +; Notes:
> > > +;
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +
> > > +    SECTION .text
> > > +
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +; UINT64
> > > +; EFIAPI
> > > +; AsmWriteXcr (
> > > +;   IN UINT32  Index,
> > > +;   IN UINT64  Value
> > > +;   );
> > >
> >
+;--------------------------------------------------------------------------
> > ----
> > > +global ASM_PFX(AsmWriteXcr)
> > > +ASM_PFX(AsmWriteXcr):
> > > +    mov     edx, [esp + 12]
> > > +    mov     eax, [esp + 8]
> > > +    mov     ecx, [esp + 4]
> > > +    xsetbv
> > > +    ret
> > > \ No newline at end of file
> > > --
> > > 2.16.2.windows.1
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
> >
> >
> 
> 
> 
> 
> 





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Re: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

Posted by Yao, Jiewen 3 years ago

Agree with Liming.

For IA32, you get parameter from stack - 
    mov     edx, [esp + 12]
    mov     eax, [esp + 8]
    mov     ecx, [esp + 4]

For X64, you get parameter from GP register - RCX, RDX, R8, R9 for the first 4 parameter. They are on the stack since the 5th parameter.

The code may be sharable only if they do not have any input parameter. But not in this case.

Even though, I still recommend we have two copy - like AsmReadCs() in 2 ReadCs.nasm, because we need different context definition, such as "DEFAULT REL"

Thank you
Yao Jiewen


> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of gaoliming
> Sent: Wednesday, March 31, 2021 10:05 AM
> To: devel@edk2.groups.io; Wu, Jiaxin <jiaxin.wu@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> Register(XCR) Read and Write.
> 
> Jiaxin:
>   32bit function and 64bit function have the different calling convention.
> Their assembly function can't be shared.
> 
>   This new API interface is same to AsmWriteMsr64(). You can refer
> AsmWriteMsr64() implementation in BaseLib.
> 
> Thanks
> Liming
> > -----邮件原件-----
> > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu, Jiaxin
> > 发送时间: 2021年3月31日 9:56
> > 收件人: devel@edk2.groups.io; gaoliming@byosoft.com.cn
> > 抄送: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> > <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> > 主题: Re: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > Register(XCR) Read and Write.
> >
> > Actually, the implementation under ia32 should be also workable for X64, I
> > just put it under ia32.
> >
> > Liming, do you have suggestion where can we place the code?
> >
> > Thanks,
> > Jiaxin
> >
> > > -----Original Message-----
> > > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> > gaoliming
> > > Sent: Wednesday, March 31, 2021 9:51 AM
> > > To: devel@edk2.groups.io; Wu, Jiaxin <jiaxin.wu@intel.com>
> > > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> > > <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> > > Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > > Register(XCR) Read and Write.
> > >
> > > Where is X64 implementation for this new API?
> > >
> > > > -----邮件原件-----
> > > > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu,
> > Jiaxin
> > > > 发送时间: 2021年3月31日 9:20
> > > > 收件人: devel@edk2.groups.io
> > > > 抄送: Michael D Kinney <michael.d.kinney@intel.com>; Liming Gao
> > > > <gaoliming@byosoft.com.cn>; Zhiguang Liu <zhiguang.liu@intel.com>;
> > Zhang
> > > > Hongbin1 <hongbin1.zhang@intel.com>
> > > > 主题: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > > > Register(XCR) Read and Write.
> > > >
> > > > https://bugzilla.tianocore.org/show_bug.cgi?id=3284
> > > >
> > > > This patch is to support Extended Control Register(XCR) Read
> > > > and Write.
> > > >
> > > > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > > > Cc: Liming Gao <gaoliming@byosoft.com.cn>
> > > > Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> > > > Signed-off-by: Zhang Hongbin1 <hongbin1.zhang@intel.com>
> > > > Signed-off-by: Jiaxin Wu <Jiaxin.wu@intel.com>
> > > > ---
> > > >  MdePkg/Include/Library/BaseLib.h          | 46
> > > > ++++++++++++++++++++++++++++++-
> > > >  MdePkg/Library/BaseLib/BaseLib.inf        |  4 ++-
> > > >  MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm  | 31
> > > > +++++++++++++++++++++
> > > >  MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm | 34
> > > > +++++++++++++++++++++++
> > > >  4 files changed, 113 insertions(+), 2 deletions(-)
> > > >  create mode 100644 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > >  create mode 100644 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > >
> > > > diff --git a/MdePkg/Include/Library/BaseLib.h
> > > > b/MdePkg/Include/Library/BaseLib.h
> > > > index 1171a0ffb5..c51633ad73 100644
> > > > --- a/MdePkg/Include/Library/BaseLib.h
> > > > +++ b/MdePkg/Include/Library/BaseLib.h
> > > > @@ -1,10 +1,10 @@
> > > >  /** @file
> > > >    Provides string functions, linked list functions, math functions,
> > > > synchronization
> > > >    functions, file path functions, and CPU architecture-specific
> > > functions.
> > > >
> > > > -Copyright (c) 2006 - 2019, Intel Corporation. All rights
> reserved.<BR>
> > > > +Copyright (c) 2006 - 2021, Intel Corporation. All rights
> reserved.<BR>
> > > >  Portions copyright (c) 2008 - 2009, Apple Inc. All rights
> reserved.<BR>
> > > >  Copyright (c) Microsoft Corporation.<BR>
> > > >  Portions Copyright (c) 2020, Hewlett Packard Enterprise Development
> > LP.
> > > All
> > > > rights reserved.<BR>
> > > >
> > > >  SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > @@ -7493,7 +7493,51 @@ PatchInstructionX86 (
> > > >    OUT X86_ASSEMBLY_PATCH_LABEL *InstructionEnd,
> > > >    IN  UINT64                   PatchValue,
> > > >    IN  UINTN                    ValueSize
> > > >    );
> > > >
> > > > +/**
> > > > +  Returns a 64-bit Extended Control Register(XCR).
> > > > +
> > > > +  Reads and returns the 64-bit XCR 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 XCR index to read.
> > > > +
> > > > +  @return The value of the XCR identified by Index.
> > > > +
> > > > +**/
> > > > +UINT64
> > > > +EFIAPI
> > > > +AsmReadXcr (
> > > > +  IN UINT32  Index
> > > > +  );
> > > > +
> > > > +/**
> > > > +  Writes a 64-bit value to a Extended Control Register(XCR), and
> returns
> > > the
> > > > +  value.
> > > > +
> > > > +  Writes the 64-bit value specified by Value to the XCR specified by
> > > Index.
> > > > The
> > > > +  64-bit value written to the XCR 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 XCR index to write.
> > > > +  @param  Value The 64-bit value to write to the XCR.
> > > > +
> > > > +  @return Value
> > > > +
> > > > +**/
> > > > +UINT64
> > > > +EFIAPI
> > > > +AsmWriteXcr (
> > > > +  IN UINT32  Index,
> > > > +  IN UINT64  Value
> > > > +  );
> > > > +
> > > >  #endif // defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
> > > >  #endif // !defined (__BASE_LIB__)
> > > > diff --git a/MdePkg/Library/BaseLib/BaseLib.inf
> > > > b/MdePkg/Library/BaseLib/BaseLib.inf
> > > > index 3b85c56c3c..e62031ea11 100644
> > > > --- a/MdePkg/Library/BaseLib/BaseLib.inf
> > > > +++ b/MdePkg/Library/BaseLib/BaseLib.inf
> > > > @@ -1,9 +1,9 @@
> > > >  ## @file
> > > >  #  Base Library implementation.
> > > >  #
> > > > -#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.
> <BR>
> > > > +#  Copyright (c) 2007 - 2021, 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>
> > > >  #
> > > >  #  SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > @@ -63,10 +63,12 @@
> > > >    BaseLibInternals.h
> > > >
> > > >  [Sources.Ia32]
> > > >    Ia32/WriteTr.nasm
> > > >    Ia32/Lfence.nasm
> > > > +  Ia32/ReadXcr.nasm
> > > > +  Ia32/WriteXcr.nasm
> > > >
> > > >    Ia32/Wbinvd.c | MSFT
> > > >    Ia32/WriteMm7.c | MSFT
> > > >    Ia32/WriteMm6.c | MSFT
> > > >    Ia32/WriteMm5.c | MSFT
> > > > diff --git a/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > new file mode 100644
> > > > index 0000000000..5d50d8ba01
> > > > --- /dev/null
> > > > +++ b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > @@ -0,0 +1,31 @@
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +;
> > > > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > > > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > +;
> > > > +; Module Name:
> > > > +;
> > > > +;   ReadXcr.Asm
> > > > +;
> > > > +; Abstract:
> > > > +;
> > > > +;   AsmReadXcr function
> > > > +;
> > > > +; Notes:
> > > > +;
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +
> > > > +    SECTION .text
> > > > +
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +; UINT64
> > > > +; EFIAPI
> > > > +; AsmReadXcr (
> > > > +;   IN UINT32  Index
> > > > +;   );
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +global ASM_PFX(AsmReadXcr)
> > > > +ASM_PFX(AsmReadXcr):
> > > > +    mov     ecx, [esp + 4]
> > > > +    xgetbv
> > > > +    ret
> > > > \ No newline at end of file
> > > > diff --git a/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > new file mode 100644
> > > > index 0000000000..009d41864b
> > > > --- /dev/null
> > > > +++ b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > @@ -0,0 +1,34 @@
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +;
> > > > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > > > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > +;
> > > > +; Module Name:
> > > > +;
> > > > +;   WriteXcr.nasm
> > > > +;
> > > > +; Abstract:
> > > > +;
> > > > +;   AsmWriteXcr function
> > > > +;
> > > > +; Notes:
> > > > +;
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +
> > > > +    SECTION .text
> > > > +
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +; UINT64
> > > > +; EFIAPI
> > > > +; AsmWriteXcr (
> > > > +;   IN UINT32  Index,
> > > > +;   IN UINT64  Value
> > > > +;   );
> > > >
> > >
> +;--------------------------------------------------------------------------
> > > ----
> > > > +global ASM_PFX(AsmWriteXcr)
> > > > +ASM_PFX(AsmWriteXcr):
> > > > +    mov     edx, [esp + 12]
> > > > +    mov     eax, [esp + 8]
> > > > +    mov     ecx, [esp + 4]
> > > > +    xsetbv
> > > > +    ret
> > > > \ No newline at end of file
> > > > --
> > > > 2.16.2.windows.1
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
> 
> 
> 
> 
> 
> 
> 



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Re: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control Register(XCR) Read and Write.

Posted by Wu, Jiaxin 3 years ago

Thanks the comments, I will refine the patch according the feedback.



> -----Original Message-----
> From: Yao, Jiewen <jiewen.yao@intel.com>
> Sent: Wednesday, March 31, 2021 10:20 AM
> To: devel@edk2.groups.io; gaoliming@byosoft.com.cn; Wu, Jiaxin
> <jiaxin.wu@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> Subject: RE: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> Register(XCR) Read and Write.
> 
> Agree with Liming.
> 
> For IA32, you get parameter from stack -
>     mov     edx, [esp + 12]
>     mov     eax, [esp + 8]
>     mov     ecx, [esp + 4]
> 
> For X64, you get parameter from GP register - RCX, RDX, R8, R9 for the first 4
> parameter. They are on the stack since the 5th parameter.
> 
> The code may be sharable only if they do not have any input parameter. But
> not in this case.
> 
> Even though, I still recommend we have two copy - like AsmReadCs() in 2
> ReadCs.nasm, because we need different context definition, such as "DEFAULT
> REL"
> 
> Thank you
> Yao Jiewen
> 
> 
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> gaoliming
> > Sent: Wednesday, March 31, 2021 10:05 AM
> > To: devel@edk2.groups.io; Wu, Jiaxin <jiaxin.wu@intel.com>
> > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> > <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> > Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > Register(XCR) Read and Write.
> >
> > Jiaxin:
> >   32bit function and 64bit function have the different calling convention.
> > Their assembly function can't be shared.
> >
> >   This new API interface is same to AsmWriteMsr64(). You can refer
> > AsmWriteMsr64() implementation in BaseLib.
> >
> > Thanks
> > Liming
> > > -----邮件原件-----
> > > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu, Jiaxin
> > > 发送时间: 2021年3月31日 9:56
> > > 收件人: devel@edk2.groups.io; gaoliming@byosoft.com.cn
> > > 抄送: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> > > <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> > > 主题: Re: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > > Register(XCR) Read and Write.
> > >
> > > Actually, the implementation under ia32 should be also workable for X64, I
> > > just put it under ia32.
> > >
> > > Liming, do you have suggestion where can we place the code?
> > >
> > > Thanks,
> > > Jiaxin
> > >
> > > > -----Original Message-----
> > > > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> > > gaoliming
> > > > Sent: Wednesday, March 31, 2021 9:51 AM
> > > > To: devel@edk2.groups.io; Wu, Jiaxin <jiaxin.wu@intel.com>
> > > > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Liu, Zhiguang
> > > > <zhiguang.liu@intel.com>; Zhang, Hongbin1 <hongbin1.zhang@intel.com>
> > > > Subject: 回复: [edk2-devel] [PATCH v1] MdePkg: Support Extended
> Control
> > > > Register(XCR) Read and Write.
> > > >
> > > > Where is X64 implementation for this new API?
> > > >
> > > > > -----邮件原件-----
> > > > > 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Wu,
> > > Jiaxin
> > > > > 发送时间: 2021年3月31日 9:20
> > > > > 收件人: devel@edk2.groups.io
> > > > > 抄送: Michael D Kinney <michael.d.kinney@intel.com>; Liming Gao
> > > > > <gaoliming@byosoft.com.cn>; Zhiguang Liu <zhiguang.liu@intel.com>;
> > > Zhang
> > > > > Hongbin1 <hongbin1.zhang@intel.com>
> > > > > 主题: [edk2-devel] [PATCH v1] MdePkg: Support Extended Control
> > > > > Register(XCR) Read and Write.
> > > > >
> > > > > https://bugzilla.tianocore.org/show_bug.cgi?id=3284
> > > > >
> > > > > This patch is to support Extended Control Register(XCR) Read
> > > > > and Write.
> > > > >
> > > > > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > > > > Cc: Liming Gao <gaoliming@byosoft.com.cn>
> > > > > Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> > > > > Signed-off-by: Zhang Hongbin1 <hongbin1.zhang@intel.com>
> > > > > Signed-off-by: Jiaxin Wu <Jiaxin.wu@intel.com>
> > > > > ---
> > > > >  MdePkg/Include/Library/BaseLib.h          | 46
> > > > > ++++++++++++++++++++++++++++++-
> > > > >  MdePkg/Library/BaseLib/BaseLib.inf        |  4 ++-
> > > > >  MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm  | 31
> > > > > +++++++++++++++++++++
> > > > >  MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm | 34
> > > > > +++++++++++++++++++++++
> > > > >  4 files changed, 113 insertions(+), 2 deletions(-)
> > > > >  create mode 100644 MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > >  create mode 100644 MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > >
> > > > > diff --git a/MdePkg/Include/Library/BaseLib.h
> > > > > b/MdePkg/Include/Library/BaseLib.h
> > > > > index 1171a0ffb5..c51633ad73 100644
> > > > > --- a/MdePkg/Include/Library/BaseLib.h
> > > > > +++ b/MdePkg/Include/Library/BaseLib.h
> > > > > @@ -1,10 +1,10 @@
> > > > >  /** @file
> > > > >    Provides string functions, linked list functions, math functions,
> > > > > synchronization
> > > > >    functions, file path functions, and CPU architecture-specific
> > > > functions.
> > > > >
> > > > > -Copyright (c) 2006 - 2019, Intel Corporation. All rights
> > reserved.<BR>
> > > > > +Copyright (c) 2006 - 2021, Intel Corporation. All rights
> > reserved.<BR>
> > > > >  Portions copyright (c) 2008 - 2009, Apple Inc. All rights
> > reserved.<BR>
> > > > >  Copyright (c) Microsoft Corporation.<BR>
> > > > >  Portions Copyright (c) 2020, Hewlett Packard Enterprise Development
> > > LP.
> > > > All
> > > > > rights reserved.<BR>
> > > > >
> > > > >  SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > > @@ -7493,7 +7493,51 @@ PatchInstructionX86 (
> > > > >    OUT X86_ASSEMBLY_PATCH_LABEL *InstructionEnd,
> > > > >    IN  UINT64                   PatchValue,
> > > > >    IN  UINTN                    ValueSize
> > > > >    );
> > > > >
> > > > > +/**
> > > > > +  Returns a 64-bit Extended Control Register(XCR).
> > > > > +
> > > > > +  Reads and returns the 64-bit XCR 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 XCR index to read.
> > > > > +
> > > > > +  @return The value of the XCR identified by Index.
> > > > > +
> > > > > +**/
> > > > > +UINT64
> > > > > +EFIAPI
> > > > > +AsmReadXcr (
> > > > > +  IN UINT32  Index
> > > > > +  );
> > > > > +
> > > > > +/**
> > > > > +  Writes a 64-bit value to a Extended Control Register(XCR), and
> > returns
> > > > the
> > > > > +  value.
> > > > > +
> > > > > +  Writes the 64-bit value specified by Value to the XCR specified by
> > > > Index.
> > > > > The
> > > > > +  64-bit value written to the XCR 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 XCR index to write.
> > > > > +  @param  Value The 64-bit value to write to the XCR.
> > > > > +
> > > > > +  @return Value
> > > > > +
> > > > > +**/
> > > > > +UINT64
> > > > > +EFIAPI
> > > > > +AsmWriteXcr (
> > > > > +  IN UINT32  Index,
> > > > > +  IN UINT64  Value
> > > > > +  );
> > > > > +
> > > > >  #endif // defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
> > > > >  #endif // !defined (__BASE_LIB__)
> > > > > diff --git a/MdePkg/Library/BaseLib/BaseLib.inf
> > > > > b/MdePkg/Library/BaseLib/BaseLib.inf
> > > > > index 3b85c56c3c..e62031ea11 100644
> > > > > --- a/MdePkg/Library/BaseLib/BaseLib.inf
> > > > > +++ b/MdePkg/Library/BaseLib/BaseLib.inf
> > > > > @@ -1,9 +1,9 @@
> > > > >  ## @file
> > > > >  #  Base Library implementation.
> > > > >  #
> > > > > -#  Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.
> > <BR>
> > > > > +#  Copyright (c) 2007 - 2021, 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>
> > > > >  #
> > > > >  #  SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > > @@ -63,10 +63,12 @@
> > > > >    BaseLibInternals.h
> > > > >
> > > > >  [Sources.Ia32]
> > > > >    Ia32/WriteTr.nasm
> > > > >    Ia32/Lfence.nasm
> > > > > +  Ia32/ReadXcr.nasm
> > > > > +  Ia32/WriteXcr.nasm
> > > > >
> > > > >    Ia32/Wbinvd.c | MSFT
> > > > >    Ia32/WriteMm7.c | MSFT
> > > > >    Ia32/WriteMm6.c | MSFT
> > > > >    Ia32/WriteMm5.c | MSFT
> > > > > diff --git a/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > > b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > > new file mode 100644
> > > > > index 0000000000..5d50d8ba01
> > > > > --- /dev/null
> > > > > +++ b/MdePkg/Library/BaseLib/Ia32/ReadXcr.nasm
> > > > > @@ -0,0 +1,31 @@
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +;
> > > > > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > > > > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > > +;
> > > > > +; Module Name:
> > > > > +;
> > > > > +;   ReadXcr.Asm
> > > > > +;
> > > > > +; Abstract:
> > > > > +;
> > > > > +;   AsmReadXcr function
> > > > > +;
> > > > > +; Notes:
> > > > > +;
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +
> > > > > +    SECTION .text
> > > > > +
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +; UINT64
> > > > > +; EFIAPI
> > > > > +; AsmReadXcr (
> > > > > +;   IN UINT32  Index
> > > > > +;   );
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +global ASM_PFX(AsmReadXcr)
> > > > > +ASM_PFX(AsmReadXcr):
> > > > > +    mov     ecx, [esp + 4]
> > > > > +    xgetbv
> > > > > +    ret
> > > > > \ No newline at end of file
> > > > > diff --git a/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > > b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > > new file mode 100644
> > > > > index 0000000000..009d41864b
> > > > > --- /dev/null
> > > > > +++ b/MdePkg/Library/BaseLib/Ia32/WriteXcr.nasm
> > > > > @@ -0,0 +1,34 @@
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +;
> > > > > +; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> > > > > +; SPDX-License-Identifier: BSD-2-Clause-Patent
> > > > > +;
> > > > > +; Module Name:
> > > > > +;
> > > > > +;   WriteXcr.nasm
> > > > > +;
> > > > > +; Abstract:
> > > > > +;
> > > > > +;   AsmWriteXcr function
> > > > > +;
> > > > > +; Notes:
> > > > > +;
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +
> > > > > +    SECTION .text
> > > > > +
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +; UINT64
> > > > > +; EFIAPI
> > > > > +; AsmWriteXcr (
> > > > > +;   IN UINT32  Index,
> > > > > +;   IN UINT64  Value
> > > > > +;   );
> > > > >
> > > >
> > +;--------------------------------------------------------------------------
> > > > ----
> > > > > +global ASM_PFX(AsmWriteXcr)
> > > > > +ASM_PFX(AsmWriteXcr):
> > > > > +    mov     edx, [esp + 12]
> > > > > +    mov     eax, [esp + 8]
> > > > > +    mov     ecx, [esp + 4]
> > > > > +    xsetbv
> > > > > +    ret
> > > > > \ No newline at end of file
> > > > > --
> > > > > 2.16.2.windows.1
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
> > 
> >



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