Copyright (c) 2006 - 2012, 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.
Reads a 64-bit MSR, performs a bitwise AND on the lower 32-bits, and writes the result back to the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND between the lower 32-bits of the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR is returned. No parameter checking is performed on Index or AndData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and AndData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.
Index | The 32-bit MSR index to write. | |
AndData | The value to AND with the read value from the MSR. |
References AsmMsrAnd64().
Reads a 64-bit MSR, performs a bitwise AND, and writes the result back to the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. No parameter checking is performed on Index or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.
Index | The 32-bit MSR index to write. | |
AndData | The value to AND with the read value from the MSR. |
References AsmReadMsr64(), and AsmWriteMsr64().
Referenced by AsmMsrAnd32().
Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise OR on the lower 32-bits, and writes the result back to the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND between the lower 32-bits of the read result and the value specified by AndData preserving the upper 32-bits, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 64-bit MSR specified by Address. The lower 32-bits of the value written to the MSR is returned. No parameter checking is performed on Index, AndData, or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index, AndData, and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.
Index | The 32-bit MSR index to write. | |
AndData | The value to AND with the read value from the MSR. | |
OrData | The value to OR with the result of the AND operation. |
References AsmMsrAndThenOr64().
Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND between read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. No parameter checking is performed on Index, AndData, or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index, AndData, and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.
Index | The 32-bit MSR index to write. | |
AndData | The value to AND with the read value from the MSR. | |
OrData | The value to OR with the result of the AND operation. |
References AsmReadMsr64(), and AsmWriteMsr64().
Referenced by AsmMsrAndThenOr32().
UINT32 EFIAPI AsmMsrBitFieldAnd32 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT32 | AndData | |||
) |
Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the result back to the bit field in the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR are returned. Extra left bits in AndData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..31. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..31. | |
AndData | The value to AND with the read value from the MSR. |
References AsmMsrBitFieldAnd64(), and ASSERT.
UINT64 EFIAPI AsmMsrBitFieldAnd64 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT64 | AndData | |||
) |
Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the result back to the bit field in the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. Extra left bits in AndData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..63. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..63. | |
AndData | The value to AND with the read value from the bit field. |
References AsmReadMsr64(), AsmWriteMsr64(), and BitFieldAnd64().
Referenced by AsmMsrBitFieldAnd32().
UINT32 EFIAPI AsmMsrBitFieldAndThenOr32 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT32 | AndData, | |||
IN UINT32 | OrData | |||
) |
Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR are returned. Extra left bits in both AndData and OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..31. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..31. | |
AndData | The value to AND with the read value from the MSR. | |
OrData | The value to OR with the result of the AND operation. |
References AsmMsrBitFieldAndThenOr64(), and ASSERT.
UINT64 EFIAPI AsmMsrBitFieldAndThenOr64 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT64 | AndData, | |||
IN UINT64 | OrData | |||
) |
Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. Extra left bits in both AndData and OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..63. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..63. | |
AndData | The value to AND with the read value from the bit field. | |
OrData | The value to OR with the result of the AND operation. |
References AsmReadMsr64(), AsmWriteMsr64(), and BitFieldAndThenOr64().
Referenced by AsmMsrBitFieldAndThenOr32().
UINT32 EFIAPI AsmMsrBitFieldOr32 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT32 | OrData | |||
) |
Reads a bit field in a 64-bit MSR, performs a bitwise OR, and writes the result back to the bit field in the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR are returned. Extra left bits in OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..31. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..31. | |
OrData | The value to OR with the read value from the MSR. |
References AsmMsrBitFieldOr64(), and ASSERT.
UINT64 EFIAPI AsmMsrBitFieldOr64 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT64 | OrData | |||
) |
Reads a bit field in a 64-bit MSR, performs a bitwise OR, and writes the result back to the bit field in the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. Extra left bits in OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..63. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..63. | |
OrData | The value to OR with the read value from the bit field. |
References AsmReadMsr64(), AsmWriteMsr64(), and BitFieldOr64().
Referenced by AsmMsrBitFieldOr32().
Reads a bit field of an MSR.
Reads the bit field in the lower 32-bits of a 64-bit MSR. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned. 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.
If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT().
Index | The 32-bit MSR index to read. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..31. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..31. |
References AsmReadMsr32(), and BitFieldRead32().
Reads a bit field of an MSR.
Reads the bit field in the 64-bit MSR. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned. 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.
If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT().
Index | The 32-bit MSR index to read. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..63. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..63. |
References AsmReadMsr64(), and BitFieldRead64().
Referenced by InternalX86GetApicBase().
UINT32 EFIAPI AsmMsrBitFieldWrite32 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT32 | Value | |||
) |
Writes a bit field to an MSR.
Writes Value to a bit field in the lower 32-bits of a 64-bit MSR. The bit field is specified by the StartBit and the EndBit. All other bits in the destination MSR are preserved. The lower 32-bits of the MSR written is returned. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..31. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..31. | |
Value | The new value of the bit field. |
References AsmMsrBitFieldWrite64(), and ASSERT.
UINT64 EFIAPI AsmMsrBitFieldWrite64 | ( | IN UINT32 | Index, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINT64 | Value | |||
) |
Writes a bit field to an MSR.
Writes Value to a bit field in a 64-bit MSR. The bit field is specified by the StartBit and the EndBit. All other bits in the destination MSR are preserved. The MSR written is returned. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64.
If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
Index | The 32-bit MSR index to write. | |
StartBit | The ordinal of the least significant bit in the bit field. Range 0..63. | |
EndBit | The ordinal of the most significant bit in the bit field. Range 0..63. | |
Value | The new value of the bit field. |
References AsmReadMsr64(), AsmWriteMsr64(), and BitFieldWrite64().
Referenced by AsmMsrBitFieldWrite32().
Reads a 64-bit MSR, performs a bitwise OR on the lower 32-bits, and writes the result back to the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise OR between the lower 32-bits of the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR is returned. No parameter checking is performed on Index or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.
Index | The 32-bit MSR index to write. | |
OrData | The value to OR with the read value from the MSR. |
References AsmMsrOr64().
Reads a 64-bit MSR, performs a bitwise OR, and writes the result back to the 64-bit MSR.
Reads the 64-bit MSR specified by Index, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. No parameter checking is performed on Index or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64.
Index | The 32-bit MSR index to write. | |
OrData | The value to OR with the read value from the MSR. |
References AsmReadMsr64(), and AsmWriteMsr64().
Referenced by AsmMsrOr32().
Returns the lower 32-bits of a Machine Specific Register(MSR).
Reads and returns the lower 32-bits of the 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.
Index | The 32-bit MSR index to read. |
References AsmReadMsr64().
Referenced by AsmMsrBitFieldRead32().
Writes a 32-bit value to a Machine Specific Register(MSR), and returns the value. The upper 32-bits of the MSR are set to zero.
Writes the 32-bit value specified by Value to the MSR specified by Index. The upper 32-bits of the MSR write are set to zero. The 32-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.
Index | The 32-bit MSR index to write. | |
Value | The 32-bit value to write to the MSR. |
References AsmWriteMsr64().