Add AccessMsrDb.s for MSFT tool chain. It uses raw data to represent instructions "mov msr[]=" and "mov =msr[]", which is only supported by INTEL & GCC tool chain.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7069 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 123 insertions, 0 deletions

diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 519dea10e3..99280baaa2 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -586,6 +586,8 @@
   Ipf/AccessEicr.s

   Ipf/AccessDbr.s

   Ipf/AccessMsr.s        | INTEL

+  Ipf/AccessMsr.s        | GCC

+  Ipf/AccessMsrDb.s      | MSFT

   Ipf/FlushCacheRange.s

   Ipf/InternalSwitchStack.c

   Ipf/GetInterruptState.s

diff --git a/MdePkg/Library/BaseLib/Ipf/AccessMsrDb.s b/MdePkg/Library/BaseLib/Ipf/AccessMsrDb.s
new file mode 100644
index 0000000000..5fea504b1c
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ipf/AccessMsrDb.s
@@ -0,0 +1,121 @@
+/// @file

+///  IPF specific Machine Specific Registers accessing functions. 

+///  This implementation uses raw data to prepresent the assembly instruction of 

+/// mov msr[]= and mov =msr[].

+///

+/// Copyright (c) 2008, Intel Corporation

+/// All rights reserved. This program and the accompanying materials

+/// are licensed and made available under the terms and conditions of the BSD License

+/// which accompanies this distribution.  The full text of the license may be found at

+/// http://opensource.org/licenses/bsd-license.php

+///

+/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+///

+///

+///

+

+

+//---------------------------------------------------------------------------------

+//++

+// AsmReadMsr

+//

+// Reads the current value of a Machine Specific Register (MSR).

+//

+// Reads and returns the current value of the Machine Specific Register specified by Index.  No

+// parameter checking is performed on Index, and if the Index value is beyond the implemented MSR

+// register range, a Reserved Register/Field fault may occur.  The caller must either guarantee that

+// Index is valid, or the caller must set up fault handlers to catch the faults.  This function is

+// only available on IPF.

+//

+// Arguments :

+//

+// On Entry : The 8-bit Machine Specific Register index to read.

+//

+// Return Value: The current value of the Machine Specific Register specified by Index.

+//

+//--

+//----------------------------------------------------------------------------------

+.text

+.type   AsmReadMsr, @function

+.proc   AsmReadMsr

+.regstk 1, 0, 0, 0

+

+AsmReadMsr::

+//

+// The follow 16 bytes stand for the bundle of 

+//   mov    r8=msr[in0];;

+// since MSFT tool chain does not support mov =msr[] instruction

+//

+  data1 0x0D

+  data1 0x40

+  data1 0x00

+  data1 0x40

+  data1 0x16

+  data1 0x04

+  data1 0x00

+  data1 0x00

+  data1 0x00

+  data1 0x02

+  data1 0x00

+  data1 0x00

+  data1 0x00

+  data1 0x00

+  data1 0x04

+  data1 0x00

+  br.ret.sptk  b0;;

+.endp   AsmReadMsr

+

+//---------------------------------------------------------------------------------

+//++

+// AsmWriteMsr

+//

+// Writes the current value of a Machine Specific Register (MSR).

+//

+// Writes Value to the Machine Specific Register specified by Index.  Value is returned.  No

+// parameter checking is performed on Index, and if the Index value is beyond the implemented MSR

+// register range, a Reserved Register/Field fault may occur.  The caller must either guarantee that

+// Index is valid, or the caller must set up fault handlers to catch the faults.  This function is

+// only available on IPF.

+//

+// Arguments :

+//

+// On Entry : The 8-bit Machine Specific Register index to write.

+//            The 64-bit value to write to the Machine Specific Register.

+//

+// Return Value: The 64-bit value to write to the Machine Specific Register.

+//

+//--

+//----------------------------------------------------------------------------------

+.text

+.type   AsmWriteMsr, @function

+.proc   AsmWriteMsr

+.regstk 2, 0, 0, 0

+

+AsmWriteMsr::

+//

+// The follow 16 bytes stand for the bundle of 

+//  mov             msr[in0] = in1

+//  mov             r8 = in1;;

+// since MSFT tool chain does not support mov msr[]= instruction

+//

+  data1 0x0D

+  data1 0x00

+  data1 0x84

+  data1 0x40

+  data1 0x06

+  data1 0x04

+  data1 0x00

+  data1 0x00

+  data1 0x00

+  data1 0x02

+  data1 0x00

+  data1 0x00

+  data1 0x01

+  data1 0x08

+  data1 0x01

+  data1 0x84

+  srlz.d;;

+  br.ret.sptk     b0;;

+.endp   AsmWriteMsr

+