X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FInclude%2FLibrary%2FBaseLib.h;h=7e10804082d185c1c9bb02f5c6d02cca6952b31f;hp=ca3fdbf3fe7db3226847719eb0189d7599fa694e;hb=0e93edbbc09be02585c21cb022b4f34add67c79e;hpb=30817eb4e418ea36a7245fddb2efdeab9526f455
diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index ca3fdbf3fe..7e10804082 100644
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -1,16 +1,16 @@
/** @file
- Memory-only library functions with no library constructor/destructor
+ Provides string functions, linked list functions, math functions, synchronization
+ functions, file path functions, and CPU architecture-specific functions.
- Copyright (c) 2006, 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
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.
+Portions copyright (c) 2008 - 2009, Apple Inc. 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.
-
- Module Name: BaseLib.h
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
@@ -18,19 +18,12 @@
#define __BASE_LIB__
//
-// Definitions for architecture specific types
-// These include SPIN_LOCK and BASE_LIBRARY_JUMP_BUFFER
-//
-
-//
-// SPIN_LOCK
+// Definitions for architecture-specific types
//
-typedef UINTN SPIN_LOCK;
-
#if defined (MDE_CPU_IA32)
-//
-// IA32 context buffer used by SetJump() and LongJump()
-//
+///
+/// The IA-32 architecture context buffer used by SetJump() and LongJump().
+///
typedef struct {
UINT32 Ebx;
UINT32 Esi;
@@ -40,10 +33,15 @@ typedef struct {
UINT32 Eip;
} BASE_LIBRARY_JUMP_BUFFER;
-#elif defined (MDE_CPU_IPF)
-//
-// IPF context buffer used by SetJump() and LongJump()
-//
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 4
+
+#endif // defined (MDE_CPU_IA32)
+
+#if defined (MDE_CPU_IPF)
+
+///
+/// The Itanium architecture context buffer used by SetJump() and LongJump().
+///
typedef struct {
UINT64 F2[2];
UINT64 F3[2];
@@ -85,10 +83,14 @@ typedef struct {
UINT64 FPSR;
} BASE_LIBRARY_JUMP_BUFFER;
-#elif defined (MDE_CPU_X64)
-//
-// X64 context buffer used by SetJump() and LongJump()
-//
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 0x10
+
+#endif // defined (MDE_CPU_IPF)
+
+#if defined (MDE_CPU_X64)
+///
+/// The x64 architecture context buffer used by SetJump() and LongJump().
+///
typedef struct {
UINT64 Rbx;
UINT64 Rsp;
@@ -100,12 +102,18 @@ typedef struct {
UINT64 R14;
UINT64 R15;
UINT64 Rip;
+ UINT64 MxCsr;
+ UINT8 XmmBuffer[160]; ///< XMM6-XMM15.
} BASE_LIBRARY_JUMP_BUFFER;
-#elif defined (MDE_CPU_EBC)
-//
-// EBC context buffer used by SetJump() and LongJump()
-//
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
+
+#endif // defined (MDE_CPU_X64)
+
+#if defined (MDE_CPU_EBC)
+///
+/// The EBC context buffer used by SetJump() and LongJump().
+///
typedef struct {
UINT64 R0;
UINT64 R1;
@@ -114,15 +122,382 @@ typedef struct {
UINT64 IP;
} BASE_LIBRARY_JUMP_BUFFER;
-#else
-#error Unknown Processor Type
-#endif
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
+
+#endif // defined (MDE_CPU_EBC)
+
+#if defined (MDE_CPU_ARM)
+
+typedef struct {
+ UINT32 R3; ///< A copy of R13.
+ UINT32 R4;
+ UINT32 R5;
+ UINT32 R6;
+ UINT32 R7;
+ UINT32 R8;
+ UINT32 R9;
+ UINT32 R10;
+ UINT32 R11;
+ UINT32 R12;
+ UINT32 R14;
+} BASE_LIBRARY_JUMP_BUFFER;
+
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 4
+
+#endif // defined (MDE_CPU_ARM)
+
+#if defined (MDE_CPU_AARCH64)
+typedef struct {
+ // GP regs
+ UINT64 X19;
+ UINT64 X20;
+ UINT64 X21;
+ UINT64 X22;
+ UINT64 X23;
+ UINT64 X24;
+ UINT64 X25;
+ UINT64 X26;
+ UINT64 X27;
+ UINT64 X28;
+ UINT64 FP;
+ UINT64 LR;
+ UINT64 IP0;
+
+ // FP regs
+ UINT64 D8;
+ UINT64 D9;
+ UINT64 D10;
+ UINT64 D11;
+ UINT64 D12;
+ UINT64 D13;
+ UINT64 D14;
+ UINT64 D15;
+} BASE_LIBRARY_JUMP_BUFFER;
+
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
+
+#endif // defined (MDE_CPU_AARCH64)
+
//
// String Services
//
+
+/**
+ Returns the length of a Null-terminated Unicode string.
+
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+ @param MaxSize The maximum number of Destination Unicode
+ char, including terminating null char.
+
+ @retval 0 If String is NULL.
+ @retval MaxSize If there is no null character in the first MaxSize characters of String.
+ @return The number of characters that percede the terminating null character.
+
+**/
+UINTN
+EFIAPI
+StrnLenS (
+ IN CONST CHAR16 *String,
+ IN UINTN MaxSize
+ );
+
+/**
+ Copies the string pointed to by Source (including the terminating null char)
+ to the array pointed to by Destination.
+
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param DestMax The maximum number of Destination Unicode
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Unicode string.
+
+ @retval RETURN_SUCCESS String is copied.
+ @retval RETURN_BUFFER_TOO_SMALL If DestMax is NOT greater than StrLen(Source).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumUnicodeStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumUnicodeStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+StrCpyS (
+ OUT CHAR16 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR16 *Source
+ );
+
+/**
+ Copies not more than Length successive char from the string pointed to by
+ Source to the array pointed to by Destination. If no null char is copied from
+ Source, then Destination[Length] is always set to null.
+
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param DestMax The maximum number of Destination Unicode
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to copy.
+
+ @retval RETURN_SUCCESS String is copied.
+ @retval RETURN_BUFFER_TOO_SMALL If DestMax is NOT greater than
+ MIN(StrLen(Source), Length).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumUnicodeStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumUnicodeStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+StrnCpyS (
+ OUT CHAR16 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR16 *Source,
+ IN UINTN Length
+ );
+
+/**
+ Appends a copy of the string pointed to by Source (including the terminating
+ null char) to the end of the string pointed to by Destination.
+
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param DestMax The maximum number of Destination Unicode
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Unicode string.
+
+ @retval RETURN_SUCCESS String is appended.
+ @retval RETURN_BAD_BUFFER_SIZE If DestMax is NOT greater than
+ StrLen(Destination).
+ @retval RETURN_BUFFER_TOO_SMALL If (DestMax - StrLen(Destination)) is NOT
+ greater than StrLen(Source).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumUnicodeStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumUnicodeStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+StrCatS (
+ IN OUT CHAR16 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR16 *Source
+ );
+
/**
+ Appends not more than Length successive char from the string pointed to by
+ Source to the end of the string pointed to by Destination. If no null char is
+ copied from Source, then Destination[StrLen(Destination) + Length] is always
+ set to null.
+
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param DestMax The maximum number of Destination Unicode
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to copy.
+
+ @retval RETURN_SUCCESS String is appended.
+ @retval RETURN_BAD_BUFFER_SIZE If DestMax is NOT greater than
+ StrLen(Destination).
+ @retval RETURN_BUFFER_TOO_SMALL If (DestMax - StrLen(Destination)) is NOT
+ greater than MIN(StrLen(Source), Length).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumUnicodeStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumUnicodeStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+StrnCatS (
+ IN OUT CHAR16 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR16 *Source,
+ IN UINTN Length
+ );
+
+/**
+ Returns the length of a Null-terminated Ascii string.
+
+ @param String A pointer to a Null-terminated Ascii string.
+ @param MaxSize The maximum number of Destination Ascii
+ char, including terminating null char.
+
+ @retval 0 If String is NULL.
+ @retval MaxSize If there is no null character in the first MaxSize characters of String.
+ @return The number of characters that percede the terminating null character.
+
+**/
+UINTN
+EFIAPI
+AsciiStrnLenS (
+ IN CONST CHAR8 *String,
+ IN UINTN MaxSize
+ );
+
+/**
+ Copies the string pointed to by Source (including the terminating null char)
+ to the array pointed to by Destination.
+
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Ascii string.
+ @param DestMax The maximum number of Destination Ascii
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Ascii string.
+
+ @retval RETURN_SUCCESS String is copied.
+ @retval RETURN_BUFFER_TOO_SMALL If DestMax is NOT greater than StrLen(Source).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumAsciiStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumAsciiStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+AsciiStrCpyS (
+ OUT CHAR8 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR8 *Source
+ );
+
+/**
+ Copies not more than Length successive char from the string pointed to by
+ Source to the array pointed to by Destination. If no null char is copied from
+ Source, then Destination[Length] is always set to null.
+
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Ascii string.
+ @param DestMax The maximum number of Destination Ascii
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Ascii string.
+ @param Length The maximum number of Ascii characters to copy.
+
+ @retval RETURN_SUCCESS String is copied.
+ @retval RETURN_BUFFER_TOO_SMALL If DestMax is NOT greater than
+ MIN(StrLen(Source), Length).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumAsciiStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumAsciiStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+AsciiStrnCpyS (
+ OUT CHAR8 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ );
+
+/**
+ Appends a copy of the string pointed to by Source (including the terminating
+ null char) to the end of the string pointed to by Destination.
+
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Ascii string.
+ @param DestMax The maximum number of Destination Ascii
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Ascii string.
+
+ @retval RETURN_SUCCESS String is appended.
+ @retval RETURN_BAD_BUFFER_SIZE If DestMax is NOT greater than
+ StrLen(Destination).
+ @retval RETURN_BUFFER_TOO_SMALL If (DestMax - StrLen(Destination)) is NOT
+ greater than StrLen(Source).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumAsciiStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumAsciiStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+AsciiStrCatS (
+ IN OUT CHAR8 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR8 *Source
+ );
+
+/**
+ Appends not more than Length successive char from the string pointed to by
+ Source to the end of the string pointed to by Destination. If no null char is
+ copied from Source, then Destination[StrLen(Destination) + Length] is always
+ set to null.
+
+ If an error would be returned, then the function will also ASSERT().
+
+ @param Destination A pointer to a Null-terminated Ascii string.
+ @param DestMax The maximum number of Destination Ascii
+ char, including terminating null char.
+ @param Source A pointer to a Null-terminated Ascii string.
+ @param Length The maximum number of Ascii characters to copy.
+
+ @retval RETURN_SUCCESS String is appended.
+ @retval RETURN_BAD_BUFFER_SIZE If DestMax is NOT greater than
+ StrLen(Destination).
+ @retval RETURN_BUFFER_TOO_SMALL If (DestMax - StrLen(Destination)) is NOT
+ greater than MIN(StrLen(Source), Length).
+ @retval RETURN_INVALID_PARAMETER If Destination is NULL.
+ If Source is NULL.
+ If PcdMaximumAsciiStringLength is not zero,
+ and DestMax is greater than
+ PcdMaximumAsciiStringLength.
+ If DestMax is 0.
+ @retval RETURN_ACCESS_DENIED If Source and Destination overlap.
+**/
+RETURN_STATUS
+EFIAPI
+AsciiStrnCatS (
+ IN OUT CHAR8 *Destination,
+ IN UINTN DestMax,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ );
+
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
+/**
+ [ATTENTION] This function is deprecated for security reason.
+
Copies one Null-terminated Unicode string to another Null-terminated Unicode
string and returns the new Unicode string.
@@ -131,16 +506,18 @@ typedef struct {
overlap, then the results are undefined.
If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
If Source and Destination overlap, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
+ PcdMaximumUnicodeStringLength Unicode characters not including the
Null-terminator, then ASSERT().
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
+ @param Destination The pointer to a Null-terminated Unicode string.
+ @param Source The pointer to a Null-terminated Unicode string.
- @return Destiantion
+ @return Destination.
**/
CHAR16 *
@@ -149,10 +526,13 @@ StrCpy (
OUT CHAR16 *Destination,
IN CONST CHAR16 *Source
);
+
+
/**
- Copies one Null-terminated Unicode string with a maximum length to another
- Null-terminated Unicode string with a maximum length and returns the new
- Unicode string.
+ [ATTENTION] This function is deprecated for security reason.
+
+ Copies up to a specified length from one Null-terminated Unicode string to
+ another Null-terminated Unicode string and returns the new Unicode string.
This function copies the contents of the Unicode string Source to the Unicode
string Destination, and returns Destination. At most, Length Unicode
@@ -162,18 +542,22 @@ StrCpy (
characters. If Source and Destination overlap, then the results are
undefined.
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Length is greater than
+ PcdMaximumUnicodeStringLength, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to copy.
+ @param Destination The pointer to a Null-terminated Unicode string.
+ @param Source The pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to copy.
- @return Destination
+ @return Destination.
**/
CHAR16 *
@@ -183,6 +567,8 @@ StrnCpy (
IN CONST CHAR16 *Source,
IN UINTN Length
);
+#endif
+
/**
Returns the length of a Null-terminated Unicode string.
@@ -190,8 +576,9 @@ StrnCpy (
Unicode string specified by String.
If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
+ PcdMaximumUnicodeStringLength Unicode characters not including the
Null-terminator, then ASSERT().
@param String Pointer to a Null-terminated Unicode string.
@@ -204,19 +591,22 @@ EFIAPI
StrLen (
IN CONST CHAR16 *String
);
+
+
/**
Returns the size of a Null-terminated Unicode string in bytes, including the
Null terminator.
- This function returns the size, in bytes, of the Null-terminated Unicode
- string specified by String.
+ This function returns the size, in bytes, of the Null-terminated Unicode string
+ specified by String.
If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
+ PcdMaximumUnicodeStringLength Unicode characters not including the
Null-terminator, then ASSERT().
- @param String Pointer to a Null-terminated Unicode string.
+ @param String The pointer to a Null-terminated Unicode string.
@return The size of String.
@@ -226,6 +616,8 @@ EFIAPI
StrSize (
IN CONST CHAR16 *String
);
+
+
/**
Compares two Null-terminated Unicode strings, and returns the difference
between the first mismatched Unicode characters.
@@ -237,19 +629,21 @@ StrSize (
mismatched Unicode character in FirstString.
If FirstString is NULL, then ASSERT().
+ If FirstString is not aligned on a 16-bit boundary, then ASSERT().
If SecondString is NULL, then ASSERT().
+ If SecondString is not aligned on a 16-bit boundary, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
Null-terminator, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
Null-terminator, then ASSERT().
- @param FirstString Pointer to a Null-terminated Unicode string.
- @param SecondString Pointer to a Null-terminated Unicode string.
+ @param FirstString The pointer to a Null-terminated Unicode string.
+ @param SecondString The pointer to a Null-terminated Unicode string.
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
+ @retval 0 FirstString is identical to SecondString.
+ @return others FirstString is not identical to SecondString.
**/
INTN
@@ -258,10 +652,12 @@ StrCmp (
IN CONST CHAR16 *FirstString,
IN CONST CHAR16 *SecondString
);
-/**
- Compares two Null-terminated Unicode strings with maximum lengths, and
- returns the difference between the first mismatched Unicode characters.
+
+/**
+ Compares up to a specified length the contents of two Null-terminated Unicode strings,
+ and returns the difference between the first mismatched Unicode characters.
+
This function compares the Null-terminated Unicode string FirstString to the
Null-terminated Unicode string SecondString. At most, Length Unicode
characters will be compared. If Length is 0, then 0 is returned. If
@@ -269,21 +665,25 @@ StrCmp (
value returned is the first mismatched Unicode character in SecondString
subtracted from the first mismatched Unicode character in FirstString.
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
+ If Length > 0 and FirstString is NULL, then ASSERT().
+ If Length > 0 and FirstString is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and SecondString is NULL, then ASSERT().
+ If Length > 0 and SecondString is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Length is greater than
+ PcdMaximumUnicodeStringLength, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
- @param FirstString Pointer to a Null-terminated Unicode string.
- @param SecondString Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to compare.
+ @param FirstString The pointer to a Null-terminated Unicode string.
+ @param SecondString The pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to compare.
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
+ @retval 0 FirstString is identical to SecondString.
+ @return others FirstString is not identical to SecondString.
**/
INTN
@@ -293,7 +693,13 @@ StrnCmp (
IN CONST CHAR16 *SecondString,
IN UINTN Length
);
+
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
/**
+ [ATTENTION] This function is deprecated for security reason.
+
Concatenates one Null-terminated Unicode string to another Null-terminated
Unicode string, and returns the concatenated Unicode string.
@@ -304,23 +710,25 @@ StrnCmp (
results are undefined.
If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
If Source and Destination overlap, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
Null-terminator, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
Null-terminator, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
and Source results in a Unicode string with more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
Null-terminator, then ASSERT().
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
+ @param Destination The pointer to a Null-terminated Unicode string.
+ @param Source The pointer to a Null-terminated Unicode string.
- @return Destination
+ @return Destination.
**/
CHAR16 *
@@ -329,9 +737,13 @@ StrCat (
IN OUT CHAR16 *Destination,
IN CONST CHAR16 *Source
);
+
+
/**
- Concatenates one Null-terminated Unicode string with a maximum length to the
- end of another Null-terminated Unicode string, and returns the concatenated
+ [ATTENTION] This function is deprecated for security reason.
+
+ Concatenates up to a specified length one Null-terminated Unicode to the end
+ of another Null-terminated Unicode string, and returns the concatenated
Unicode string.
This function concatenates two Null-terminated Unicode strings. The contents
@@ -343,25 +755,28 @@ StrCat (
the results are undefined.
If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Length is greater than
+ PcdMaximumUnicodeStringLength, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
Null-terminator, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
Null-terminator, then ASSERT().
If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
- and Source results in a Unicode string with more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
+ and Source results in a Unicode string with more than PcdMaximumUnicodeStringLength
+ Unicode characters, not including the Null-terminator, then ASSERT().
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to concatenate from
+ @param Destination The pointer to a Null-terminated Unicode string.
+ @param Source The pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to concatenate from
Source.
- @return Destination
+ @return Destination.
**/
CHAR16 *
@@ -371,133 +786,388 @@ StrnCat (
IN CONST CHAR16 *Source,
IN UINTN Length
);
+#endif
+
/**
- Copies one Null-terminated ASCII string to another Null-terminated ASCII
- string and returns the new ASCII string.
+ Returns the first occurrence of a Null-terminated Unicode sub-string
+ in a Null-terminated Unicode string.
- This function copies the contents of the ASCII string Source to the ASCII
- string Destination, and returns Destination. If Source and Destination
- overlap, then the results are undefined.
+ This function scans the contents of the Null-terminated Unicode string
+ specified by String and returns the first occurrence of SearchString.
+ If SearchString is not found in String, then NULL is returned. If
+ the length of SearchString is zero, then String is returned.
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If SearchString is NULL, then ASSERT().
+ If SearchString is not aligned on a 16-bit boundary, then ASSERT().
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
+ If PcdMaximumUnicodeStringLength is not zero, and SearchString
+ or String contains more than PcdMaximumUnicodeStringLength Unicode
+ characters, not including the Null-terminator, then ASSERT().
- @return Destination
+ @param String The pointer to a Null-terminated Unicode string.
+ @param SearchString The pointer to a Null-terminated Unicode string to search for.
+
+ @retval NULL If the SearchString does not appear in String.
+ @return others If there is a match.
**/
-CHAR8 *
+CHAR16 *
EFIAPI
-AsciiStrCpy (
- OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source
+StrStr (
+ IN CONST CHAR16 *String,
+ IN CONST CHAR16 *SearchString
);
+
/**
- Copies one Null-terminated ASCII string with a maximum length to another
- Null-terminated ASCII string with a maximum length and returns the new ASCII
- string.
+ Convert a Null-terminated Unicode decimal string to a value of
+ type UINTN.
- This function copies the contents of the ASCII string Source to the ASCII
- string Destination, and returns Destination. At most, Length ASCII characters
- are copied from Source to Destination. If Length is 0, then Destination is
- returned unmodified. If Length is greater that the number of ASCII characters
- in Source, then Destination is padded with Null ASCII characters. If Source
- and Destination overlap, then the results are undefined.
+ This function returns a value of type UINTN by interpreting the contents
+ of the Unicode string specified by String as a decimal number. The format
+ of the input Unicode string String is:
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
+ [spaces] [decimal digits].
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters to copy.
+ The valid decimal digit character is in the range [0-9]. The
+ function will ignore the pad space, which includes spaces or
+ tab characters, before [decimal digits]. The running zero in the
+ beginning of [decimal digits] will be ignored. Then, the function
+ stops at the first character that is a not a valid decimal character
+ or a Null-terminator, whichever one comes first.
- @return Destination
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits,
+ then 0 is returned.
+ If the number represented by String overflows according
+ to the range defined by UINTN, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains
+ more than PcdMaximumUnicodeStringLength Unicode characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String The pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
**/
-CHAR8 *
+UINTN
EFIAPI
-AsciiStrnCpy (
- OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source,
- IN UINTN Length
+StrDecimalToUintn (
+ IN CONST CHAR16 *String
);
+
/**
- Returns the length of a Null-terminated ASCII string.
+ Convert a Null-terminated Unicode decimal string to a value of
+ type UINT64.
- This function returns the number of ASCII characters in the Null-terminated
- ASCII string specified by String.
+ This function returns a value of type UINT64 by interpreting the contents
+ of the Unicode string specified by String as a decimal number. The format
+ of the input Unicode string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The
+ function will ignore the pad space, which includes spaces or
+ tab characters, before [decimal digits]. The running zero in the
+ beginning of [decimal digits] will be ignored. Then, the function
+ stops at the first character that is a not a valid decimal character
+ or a Null-terminator, whichever one comes first.
If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits,
+ then 0 is returned.
+ If the number represented by String overflows according
+ to the range defined by UINT64, then ASSERT().
- @param String Pointer to a Null-terminated ASCII string.
+ If PcdMaximumUnicodeStringLength is not zero, and String contains
+ more than PcdMaximumUnicodeStringLength Unicode characters not including
+ the Null-terminator, then ASSERT().
- @return The length of String.
+ @param String The pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
**/
-UINTN
+UINT64
EFIAPI
-AsciiStrLen (
- IN CONST CHAR8 *String
+StrDecimalToUint64 (
+ IN CONST CHAR16 *String
);
+
+
/**
- Returns the size of a Null-terminated ASCII string in bytes, including the
- Null terminator.
+ Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN.
- This function returns the size, in bytes, of the Null-terminated ASCII string
- specified by String.
+ This function returns a value of type UINTN by interpreting the contents
+ of the Unicode string specified by String as a hexadecimal number.
+ The format of the input Unicode string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
+ If "x" appears in the input string, it must be prefixed with at least one 0.
+ The function will ignore the pad space, which includes spaces or tab characters,
+ before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
+ [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
+ first valid hexadecimal digit. Then, the function stops at the first character
+ that is a not a valid hexadecimal character or NULL, whichever one comes first.
If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then zero is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
+ then zero is returned.
+ If the number represented by String overflows according to the range defined by
+ UINTN, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
then ASSERT().
- @param String Pointer to a Null-terminated ASCII string.
+ @param String The pointer to a Null-terminated Unicode string.
- @return The size of String.
+ @retval Value translated from String.
**/
UINTN
EFIAPI
-AsciiStrSize (
- IN CONST CHAR8 *String
+StrHexToUintn (
+ IN CONST CHAR16 *String
);
-/**
- Compares two Null-terminated ASCII strings, and returns the difference
- between the first mismatched ASCII characters.
- This function compares the Null-terminated ASCII string FirstString to the
- Null-terminated ASCII string SecondString. If FirstString is identical to
- SecondString, then 0 is returned. Otherwise, the value returned is the first
- mismatched ASCII character in SecondString subtracted from the first
- mismatched ASCII character in FirstString.
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more
- than PcdMaximumAsciiStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
+/**
+ Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64.
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
+ This function returns a value of type UINT64 by interpreting the contents
+ of the Unicode string specified by String as a hexadecimal number.
+ The format of the input Unicode string String is
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
+ If "x" appears in the input string, it must be prefixed with at least one 0.
+ The function will ignore the pad space, which includes spaces or tab characters,
+ before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
+ [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
+ first valid hexadecimal digit. Then, the function stops at the first character that is
+ a not a valid hexadecimal character or NULL, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then zero is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
+ then zero is returned.
+ If the number represented by String overflows according to the range defined by
+ UINT64, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String The pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
+
+**/
+UINT64
+EFIAPI
+StrHexToUint64 (
+ IN CONST CHAR16 *String
+ );
+
+/**
+ Convert a Null-terminated Unicode string to a Null-terminated
+ ASCII string and returns the ASCII string.
+
+ This function converts the content of the Unicode string Source
+ to the ASCII string Destination by copying the lower 8 bits of
+ each Unicode character. It returns Destination.
+
+ The caller is responsible to make sure Destination points to a buffer with size
+ equal or greater than ((StrLen (Source) + 1) * sizeof (CHAR8)) in bytes.
+
+ If any Unicode characters in Source contain non-zero value in
+ the upper 8 bits, then ASSERT().
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains
+ more than PcdMaximumUnicodeStringLength Unicode characters not including
+ the Null-terminator, then ASSERT().
+
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more
+ than PcdMaximumAsciiStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Source The pointer to a Null-terminated Unicode string.
+ @param Destination The pointer to a Null-terminated ASCII string.
+
+ @return Destination.
+
+**/
+CHAR8 *
+EFIAPI
+UnicodeStrToAsciiStr (
+ IN CONST CHAR16 *Source,
+ OUT CHAR8 *Destination
+ );
+
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
+/**
+ [ATTENTION] This function is deprecated for security reason.
+
+ Copies one Null-terminated ASCII string to another Null-terminated ASCII
+ string and returns the new ASCII string.
+
+ This function copies the contents of the ASCII string Source to the ASCII
+ string Destination, and returns Destination. If Source and Destination
+ overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination The pointer to a Null-terminated ASCII string.
+ @param Source The pointer to a Null-terminated ASCII string.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrCpy (
+ OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source
+ );
+
+
+/**
+ [ATTENTION] This function is deprecated for security reason.
+
+ Copies up to a specified length one Null-terminated ASCII string to another
+ Null-terminated ASCII string and returns the new ASCII string.
+
+ This function copies the contents of the ASCII string Source to the ASCII
+ string Destination, and returns Destination. At most, Length ASCII characters
+ are copied from Source to Destination. If Length is 0, then Destination is
+ returned unmodified. If Length is greater that the number of ASCII characters
+ in Source, then Destination is padded with Null ASCII characters. If Source
+ and Destination overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Length is greater than
+ PcdMaximumAsciiStringLength, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination The pointer to a Null-terminated ASCII string.
+ @param Source The pointer to a Null-terminated ASCII string.
+ @param Length The maximum number of ASCII characters to copy.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrnCpy (
+ OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ );
+#endif
+
+/**
+ Returns the length of a Null-terminated ASCII string.
+
+ This function returns the number of ASCII characters in the Null-terminated
+ ASCII string specified by String.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String The pointer to a Null-terminated ASCII string.
+
+ @return The length of String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrLen (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Returns the size of a Null-terminated ASCII string in bytes, including the
+ Null terminator.
+
+ This function returns the size, in bytes, of the Null-terminated ASCII string
+ specified by String.
+
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String The pointer to a Null-terminated ASCII string.
+
+ @return The size of String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrSize (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Compares two Null-terminated ASCII strings, and returns the difference
+ between the first mismatched ASCII characters.
+
+ This function compares the Null-terminated ASCII string FirstString to the
+ Null-terminated ASCII string SecondString. If FirstString is identical to
+ SecondString, then 0 is returned. Otherwise, the value returned is the first
+ mismatched ASCII character in SecondString subtracted from the first
+ mismatched ASCII character in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and SecondString contains more
+ than PcdMaximumAsciiStringLength ASCII characters not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString The pointer to a Null-terminated ASCII string.
+ @param SecondString The pointer to a Null-terminated ASCII string.
+
+ @retval ==0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
**/
INTN
@@ -506,6 +1176,8 @@ AsciiStrCmp (
IN CONST CHAR8 *FirstString,
IN CONST CHAR8 *SecondString
);
+
+
/**
Performs a case insensitive comparison of two Null-terminated ASCII strings,
and returns the difference between the first mismatched ASCII characters.
@@ -526,13 +1198,13 @@ AsciiStrCmp (
than PcdMaximumAsciiStringLength ASCII characters not including the
Null-terminator, then ASSERT().
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
+ @param FirstString The pointer to a Null-terminated ASCII string.
+ @param SecondString The pointer to a Null-terminated ASCII string.
- @retval 0 FirstString is identical to SecondString using case insensitive
- comparisons.
- @retval !=0 FirstString is not identical to SecondString using case
- insensitive comparisons.
+ @retval ==0 FirstString is identical to SecondString using case insensitive
+ comparisons.
+ @retval !=0 FirstString is not identical to SecondString using case
+ insensitive comparisons.
**/
INTN
@@ -541,6 +1213,8 @@ AsciiStriCmp (
IN CONST CHAR8 *FirstString,
IN CONST CHAR8 *SecondString
);
+
+
/**
Compares two Null-terminated ASCII strings with maximum lengths, and returns
the difference between the first mismatched ASCII characters.
@@ -552,20 +1226,23 @@ AsciiStriCmp (
is the first mismatched ASCII character in SecondString subtracted from the
first mismatched ASCII character in FirstString.
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ If Length > 0 and FirstString is NULL, then ASSERT().
+ If Length > 0 and SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Length is greater than
+ PcdMaximumAsciiStringLength, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ If PcdMaximumAsciiStringLength is not zero, and SecondString contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
then ASSERT().
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
+ @param FirstString The pointer to a Null-terminated ASCII string.
+ @param SecondString The pointer to a Null-terminated ASCII string.
+ @param Length The maximum number of ASCII characters for compare.
+
+ @retval ==0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
**/
INTN
@@ -575,7 +1252,13 @@ AsciiStrnCmp (
IN CONST CHAR8 *SecondString,
IN UINTN Length
);
+
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
/**
+ [ATTENTION] This function is deprecated for security reason.
+
Concatenates one Null-terminated ASCII string to another Null-terminated
ASCII string, and returns the concatenated ASCII string.
@@ -596,8 +1279,8 @@ AsciiStrnCmp (
Source results in a ASCII string with more than PcdMaximumAsciiStringLength
ASCII characters, then ASSERT().
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
+ @param Destination The pointer to a Null-terminated ASCII string.
+ @param Source The pointer to a Null-terminated ASCII string.
@return Destination
@@ -608,10 +1291,14 @@ AsciiStrCat (
IN OUT CHAR8 *Destination,
IN CONST CHAR8 *Source
);
+
+
/**
- Concatenates one Null-terminated ASCII string with a maximum length to the
- end of another Null-terminated ASCII string, and returns the concatenated
- ASCII string.
+ [ATTENTION] This function is deprecated for security reason.
+
+ Concatenates up to a specified length one Null-terminated ASCII string to
+ the end of another Null-terminated ASCII string, and returns the
+ concatenated ASCII string.
This function concatenates two Null-terminated ASCII strings. The contents
of Null-terminated ASCII string Source are concatenated to the end of Null-
@@ -621,22 +1308,24 @@ AsciiStrCat (
Destination is returned unmodified. If Source and Destination overlap, then
the results are undefined.
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Length is greater than
+ PcdMaximumAsciiStringLength, then ASSERT().
If PcdMaximumAsciiStringLength is not zero, and Destination contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
then ASSERT().
If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
then ASSERT().
If PcdMaximumAsciiStringLength is not zero, and concatenating Destination and
Source results in a ASCII string with more than PcdMaximumAsciiStringLength
- ASCII characters not including the Null-terminator, then ASSERT().
+ ASCII characters, not including the Null-terminator, then ASSERT().
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters to concatenate from
+ @param Destination The pointer to a Null-terminated ASCII string.
+ @param Source The pointer to a Null-terminated ASCII string.
+ @param Length The maximum number of ASCII characters to concatenate from
Source.
@return Destination
@@ -649,109 +1338,366 @@ AsciiStrnCat (
IN CONST CHAR8 *Source,
IN UINTN Length
);
+#endif
+
/**
- Converts an 8-bit value to an 8-bit BCD value.
+ Returns the first occurrence of a Null-terminated ASCII sub-string
+ in a Null-terminated ASCII string.
- Converts the 8-bit value specified by Value to BCD. The BCD value is
- returned.
+ This function scans the contents of the ASCII string specified by String
+ and returns the first occurrence of SearchString. If SearchString is not
+ found in String, then NULL is returned. If the length of SearchString is zero,
+ then String is returned.
- If Value >= 100, then ASSERT().
+ If String is NULL, then ASSERT().
+ If SearchString is NULL, then ASSERT().
- @param Value The 8-bit value to convert to BCD. Range 0..99.
+ If PcdMaximumAsciiStringLength is not zero, and SearchString or
+ String contains more than PcdMaximumAsciiStringLength Unicode characters
+ not including the Null-terminator, then ASSERT().
- @return The BCD value
+ @param String The pointer to a Null-terminated ASCII string.
+ @param SearchString The pointer to a Null-terminated ASCII string to search for.
+
+ @retval NULL If the SearchString does not appear in String.
+ @retval others If there is a match return the first occurrence of SearchingString.
+ If the length of SearchString is zero,return String.
**/
-UINT8
+CHAR8 *
EFIAPI
-DecimalToBcd8 (
- IN UINT8 Value
+AsciiStrStr (
+ IN CONST CHAR8 *String,
+ IN CONST CHAR8 *SearchString
);
+
/**
- Converts an 8-bit BCD value to an 8-bit value.
+ Convert a Null-terminated ASCII decimal string to a value of type
+ UINTN.
- Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
- value is returned.
+ This function returns a value of type UINTN by interpreting the contents
+ of the ASCII string String as a decimal number. The format of the input
+ ASCII string String is:
- If Value >= 0xA0, then ASSERT().
- If (Value & 0x0F) >= 0x0A, then ASSERT().
+ [spaces] [decimal digits].
- @param Value The 8-bit BCD value to convert to an 8-bit value.
+ The valid decimal digit character is in the range [0-9]. The function will
+ ignore the pad space, which includes spaces or tab characters, before the digits.
+ The running zero in the beginning of [decimal digits] will be ignored. Then, the
+ function stops at the first character that is a not a valid decimal character or
+ Null-terminator, whichever on comes first.
- @return The 8-bit value is returned.
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits, then 0 is returned.
+ If the number represented by String overflows according to the range defined by
+ UINTN, then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String The pointer to a Null-terminated ASCII string.
+
+ @retval The value translated from String.
**/
-UINT8
+UINTN
EFIAPI
-BcdToDecimal8 (
- IN UINT8 Value
+AsciiStrDecimalToUintn (
+ IN CONST CHAR8 *String
);
-//
-// LIST_ENTRY definition
-//
-typedef struct _LIST_ENTRY LIST_ENTRY;
-struct _LIST_ENTRY {
- LIST_ENTRY *ForwardLink;
- LIST_ENTRY *BackLink;
-};
+/**
+ Convert a Null-terminated ASCII decimal string to a value of type
+ UINT64.
-//
-// Linked List Functions and Macros
-//
+ This function returns a value of type UINT64 by interpreting the contents
+ of the ASCII string String as a decimal number. The format of the input
+ ASCII string String is:
-/**
- Initializes the head node of a doubly linked list that is declared as a
- global variable in a module.
+ [spaces] [decimal digits].
- Initializes the forward and backward links of a new linked list. After
- initializing a linked list with this macro, the other linked list functions
- may be used to add and remove nodes from the linked list. This macro results
- in smaller executables by initializing the linked list in the data section,
- instead if calling the InitializeListHead() function to perform the
- equivalent operation.
+ The valid decimal digit character is in the range [0-9]. The function will
+ ignore the pad space, which includes spaces or tab characters, before the digits.
+ The running zero in the beginning of [decimal digits] will be ignored. Then, the
+ function stops at the first character that is a not a valid decimal character or
+ Null-terminator, whichever on comes first.
- @param ListHead The head note of a list to initiailize.
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits, then 0 is returned.
+ If the number represented by String overflows according to the range defined by
+ UINT64, then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String The pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
**/
-#define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&ListHead, &ListHead}
+UINT64
+EFIAPI
+AsciiStrDecimalToUint64 (
+ IN CONST CHAR8 *String
+ );
+
/**
- Initializes the head node of a doubly linked list, and returns the pointer to
- the head node of the doubly linked list.
+ Convert a Null-terminated ASCII hexadecimal string to a value of type UINTN.
- Initializes the forward and backward links of a new linked list. After
- initializing a linked list with this function, the other linked list
- functions may be used to add and remove nodes from the linked list. It is up
- to the caller of this function to allocate the memory for ListHead.
+ This function returns a value of type UINTN by interpreting the contents of
+ the ASCII string String as a hexadecimal number. The format of the input ASCII
+ string String is:
- If ListHead is NULL, then ASSERT().
+ [spaces][zeros][x][hexadecimal digits].
- @param ListHead A pointer to the head node of a new doubly linked list.
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
+ appears in the input string, it must be prefixed with at least one 0. The function
+ will ignore the pad space, which includes spaces or tab characters, before [zeros],
+ [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
+ will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
+ digit. Then, the function stops at the first character that is a not a valid
+ hexadecimal character or Null-terminator, whichever on comes first.
- @return ListHead
+ If String has only pad spaces, then 0 is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
+ 0 is returned.
+
+ If the number represented by String overflows according to the range defined by UINTN,
+ then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero,
+ and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String The pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
**/
-LIST_ENTRY *
+UINTN
EFIAPI
-InitializeListHead (
- IN LIST_ENTRY *ListHead
+AsciiStrHexToUintn (
+ IN CONST CHAR8 *String
);
+
/**
- Adds a node to the beginning of a doubly linked list, and returns the pointer
- to the head node of the doubly linked list.
+ Convert a Null-terminated ASCII hexadecimal string to a value of type UINT64.
- Adds the node Entry at the beginning of the doubly linked list denoted by
+ This function returns a value of type UINT64 by interpreting the contents of
+ the ASCII string String as a hexadecimal number. The format of the input ASCII
+ string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
+ appears in the input string, it must be prefixed with at least one 0. The function
+ will ignore the pad space, which includes spaces or tab characters, before [zeros],
+ [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
+ will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
+ digit. Then, the function stops at the first character that is a not a valid
+ hexadecimal character or Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
+ 0 is returned.
+
+ If the number represented by String overflows according to the range defined by UINT64,
+ then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero,
+ and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String The pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
+
+**/
+UINT64
+EFIAPI
+AsciiStrHexToUint64 (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Convert one Null-terminated ASCII string to a Null-terminated
+ Unicode string and returns the Unicode string.
+
+ This function converts the contents of the ASCII string Source to the Unicode
+ string Destination, and returns Destination. The function terminates the
+ Unicode string Destination by appending a Null-terminator character at the end.
+ The caller is responsible to make sure Destination points to a buffer with size
+ equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength ASCII characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Source The pointer to a Null-terminated ASCII string.
+ @param Destination The pointer to a Null-terminated Unicode string.
+
+ @return Destination.
+
+**/
+CHAR16 *
+EFIAPI
+AsciiStrToUnicodeStr (
+ IN CONST CHAR8 *Source,
+ OUT CHAR16 *Destination
+ );
+
+
+/**
+ Converts an 8-bit value to an 8-bit BCD value.
+
+ Converts the 8-bit value specified by Value to BCD. The BCD value is
+ returned.
+
+ If Value >= 100, then ASSERT().
+
+ @param Value The 8-bit value to convert to BCD. Range 0..99.
+
+ @return The BCD value.
+
+**/
+UINT8
+EFIAPI
+DecimalToBcd8 (
+ IN UINT8 Value
+ );
+
+
+/**
+ Converts an 8-bit BCD value to an 8-bit value.
+
+ Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
+ value is returned.
+
+ If Value >= 0xA0, then ASSERT().
+ If (Value & 0x0F) >= 0x0A, then ASSERT().
+
+ @param Value The 8-bit BCD value to convert to an 8-bit value.
+
+ @return The 8-bit value is returned.
+
+**/
+UINT8
+EFIAPI
+BcdToDecimal8 (
+ IN UINT8 Value
+ );
+
+//
+// File Path Manipulation Functions
+//
+
+/**
+ Removes the last directory or file entry in a path by changing the last
+ L'\' to a CHAR_NULL.
+
+ @param[in, out] Path The pointer to the path to modify.
+
+ @retval FALSE Nothing was found to remove.
+ @retval TRUE A directory or file was removed.
+**/
+BOOLEAN
+EFIAPI
+PathRemoveLastItem(
+ IN OUT CHAR16 *Path
+ );
+
+/**
+ Function to clean up paths.
+ - Single periods in the path are removed.
+ - Double periods in the path are removed along with a single parent directory.
+ - Forward slashes L'/' are converted to backward slashes L'\'.
+
+ This will be done inline and the existing buffer may be larger than required
+ upon completion.
+
+ @param[in] Path The pointer to the string containing the path.
+
+ @return Returns Path, otherwise returns NULL to indicate that an error has occured.
+**/
+CHAR16*
+EFIAPI
+PathCleanUpDirectories(
+ IN CHAR16 *Path
+ );
+
+//
+// Linked List Functions and Macros
+//
+
+/**
+ Initializes the head node of a doubly linked list that is declared as a
+ global variable in a module.
+
+ Initializes the forward and backward links of a new linked list. After
+ initializing a linked list with this macro, the other linked list functions
+ may be used to add and remove nodes from the linked list. This macro results
+ in smaller executables by initializing the linked list in the data section,
+ instead if calling the InitializeListHead() function to perform the
+ equivalent operation.
+
+ @param ListHead The head note of a list to initialize.
+
+**/
+#define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&(ListHead), &(ListHead)}
+
+
+/**
+ Initializes the head node of a doubly linked list, and returns the pointer to
+ the head node of the doubly linked list.
+
+ Initializes the forward and backward links of a new linked list. After
+ initializing a linked list with this function, the other linked list
+ functions may be used to add and remove nodes from the linked list. It is up
+ to the caller of this function to allocate the memory for ListHead.
+
+ If ListHead is NULL, then ASSERT().
+
+ @param ListHead A pointer to the head node of a new doubly linked list.
+
+ @return ListHead
+
+**/
+LIST_ENTRY *
+EFIAPI
+InitializeListHead (
+ IN OUT LIST_ENTRY *ListHead
+ );
+
+
+/**
+ Adds a node to the beginning of a doubly linked list, and returns the pointer
+ to the head node of the doubly linked list.
+
+ Adds the node Entry at the beginning of the doubly linked list denoted by
ListHead, and returns ListHead.
If ListHead is NULL, then ASSERT().
If Entry is NULL, then ASSERT().
- If ListHead was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
- of nodes in ListHead, including the ListHead node, is greater than or
+ If ListHead was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and prior to insertion the number
+ of nodes in ListHead, including the ListHead node, is greater than or
equal to PcdMaximumLinkedListLength, then ASSERT().
@param ListHead A pointer to the head node of a doubly linked list.
@@ -764,10 +1710,11 @@ InitializeListHead (
LIST_ENTRY *
EFIAPI
InsertHeadList (
- IN LIST_ENTRY *ListHead,
- IN LIST_ENTRY *Entry
+ IN OUT LIST_ENTRY *ListHead,
+ IN OUT LIST_ENTRY *Entry
);
+
/**
Adds a node to the end of a doubly linked list, and returns the pointer to
the head node of the doubly linked list.
@@ -777,9 +1724,10 @@ InsertHeadList (
If ListHead is NULL, then ASSERT().
If Entry is NULL, then ASSERT().
- If ListHead was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
- of nodes in ListHead, including the ListHead node, is greater than or
+ If ListHead was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and prior to insertion the number
+ of nodes in ListHead, including the ListHead node, is greater than or
equal to PcdMaximumLinkedListLength, then ASSERT().
@param ListHead A pointer to the head node of a doubly linked list.
@@ -792,27 +1740,29 @@ InsertHeadList (
LIST_ENTRY *
EFIAPI
InsertTailList (
- IN LIST_ENTRY *ListHead,
- IN LIST_ENTRY *Entry
+ IN OUT LIST_ENTRY *ListHead,
+ IN OUT LIST_ENTRY *Entry
);
+
/**
Retrieves the first node of a doubly linked list.
- Returns the first node of a doubly linked list. List must have been
- initialized with InitializeListHead(). If List is empty, then NULL is
- returned.
+ Returns the first node of a doubly linked list. List must have been
+ initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
+ If List is empty, then List is returned.
If List is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
+ If List was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT().
@param List A pointer to the head node of a doubly linked list.
@return The first node of a doubly linked list.
- @retval NULL The list is empty.
+ @retval List The list is empty.
**/
LIST_ENTRY *
@@ -821,25 +1771,26 @@ GetFirstNode (
IN CONST LIST_ENTRY *List
);
+
/**
Retrieves the next node of a doubly linked list.
- Returns the node of a doubly linked list that follows Node. List must have
- been initialized with InitializeListHead(). If List is empty, then List is
- returned.
+ Returns the node of a doubly linked list that follows Node.
+ List must have been initialized with INTIALIZE_LIST_HEAD_VARIABLE()
+ or InitializeListHead(). If List is empty, then List is returned.
If List is NULL, then ASSERT().
If Node is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and List contains more than
- PcdMaximumLinkedListLenth nodes, then ASSERT().
- If Node is not a node in List, then ASSERT().
+ If List was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and List contains more than
+ PcdMaximumLinkedListLength nodes, then ASSERT().
+ If PcdVerifyNodeInList is TRUE and Node is not a node in List, then ASSERT().
@param List A pointer to the head node of a doubly linked list.
@param Node A pointer to a node in the doubly linked list.
- @return Pointer to the next node if one exists. Otherwise a null value which
- is actually List is returned.
+ @return The pointer to the next node if one exists. Otherwise List is returned.
**/
LIST_ENTRY *
@@ -849,6 +1800,36 @@ GetNextNode (
IN CONST LIST_ENTRY *Node
);
+
+/**
+ Retrieves the previous node of a doubly linked list.
+
+ Returns the node of a doubly linked list that precedes Node.
+ List must have been initialized with INTIALIZE_LIST_HEAD_VARIABLE()
+ or InitializeListHead(). If List is empty, then List is returned.
+
+ If List is NULL, then ASSERT().
+ If Node is NULL, then ASSERT().
+ If List was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and List contains more than
+ PcdMaximumLinkedListLength nodes, then ASSERT().
+ If PcdVerifyNodeInList is TRUE and Node is not a node in List, then ASSERT().
+
+ @param List A pointer to the head node of a doubly linked list.
+ @param Node A pointer to a node in the doubly linked list.
+
+ @return The pointer to the previous node if one exists. Otherwise List is returned.
+
+**/
+LIST_ENTRY *
+EFIAPI
+GetPreviousNode (
+ IN CONST LIST_ENTRY *List,
+ IN CONST LIST_ENTRY *Node
+ );
+
+
/**
Checks to see if a doubly linked list is empty or not.
@@ -856,9 +1837,10 @@ GetNextNode (
zero nodes, this function returns TRUE. Otherwise, it returns FALSE.
If ListHead is NULL, then ASSERT().
- If ListHead was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
+ If ListHead was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT().
@param ListHead A pointer to the head node of a doubly linked list.
@@ -873,26 +1855,31 @@ IsListEmpty (
IN CONST LIST_ENTRY *ListHead
);
+
/**
- Determines if a node in a doubly linked list is null.
+ Determines if a node in a doubly linked list is the head node of a the same
+ doubly linked list. This function is typically used to terminate a loop that
+ traverses all the nodes in a doubly linked list starting with the head node.
- Returns FALSE if Node is one of the nodes in the doubly linked list specified
- by List. Otherwise, TRUE is returned. List must have been initialized with
- InitializeListHead().
+ Returns TRUE if Node is equal to List. Returns FALSE if Node is one of the
+ nodes in the doubly linked list specified by List. List must have been
+ initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
If List is NULL, then ASSERT().
If Node is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
+ If List was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead(),
+ then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT().
- If Node is not a node in List and Node is not equal to List, then ASSERT().
+ If PcdVerifyNodeInList is TRUE and Node is not a node in List the and Node is not equal
+ to List, then ASSERT().
@param List A pointer to the head node of a doubly linked list.
@param Node A pointer to a node in the doubly linked list.
- @retval TRUE Node is one of the nodes in the doubly linked list.
- @retval FALSE Node is not one of the nodes in the doubly linked list.
+ @retval TRUE Node is the head of the doubly-linked list pointed by List.
+ @retval FALSE Node is not the head of the doubly-linked list pointed by List.
**/
BOOLEAN
@@ -902,20 +1889,22 @@ IsNull (
IN CONST LIST_ENTRY *Node
);
+
/**
Determines if a node the last node in a doubly linked list.
Returns TRUE if Node is the last node in the doubly linked list specified by
List. Otherwise, FALSE is returned. List must have been initialized with
- InitializeListHead().
+ INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
If List is NULL, then ASSERT().
If Node is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
+ If List was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or
+ InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT().
- If Node is not a node in List, then ASSERT().
+ If PcdVerifyNodeInList is TRUE and Node is not a node in List, then ASSERT().
@param List A pointer to the head node of a doubly linked list.
@param Node A pointer to a node in the doubly linked list.
@@ -931,6 +1920,7 @@ IsNodeAtEnd (
IN CONST LIST_ENTRY *Node
);
+
/**
Swaps the location of two nodes in a doubly linked list, and returns the
first node after the swap.
@@ -939,28 +1929,32 @@ IsNodeAtEnd (
Otherwise, the location of the FirstEntry node is swapped with the location
of the SecondEntry node in a doubly linked list. SecondEntry must be in the
same double linked list as FirstEntry and that double linked list must have
- been initialized with InitializeListHead(). SecondEntry is returned after the
- nodes are swapped.
+ been initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
+ SecondEntry is returned after the nodes are swapped.
If FirstEntry is NULL, then ASSERT().
If SecondEntry is NULL, then ASSERT().
- If SecondEntry and FirstEntry are not in the same linked list, then ASSERT().
+ If PcdVerifyNodeInList is TRUE and SecondEntry and FirstEntry are not in the
+ same linked list, then ASSERT().
If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
linked list containing the FirstEntry and SecondEntry nodes, including
- the FirstEntry and SecondEntry nodes, is greater than or equal to
+ the FirstEntry and SecondEntry nodes, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT().
@param FirstEntry A pointer to a node in a linked list.
@param SecondEntry A pointer to another node in the same linked list.
+
+ @return SecondEntry.
**/
LIST_ENTRY *
EFIAPI
SwapListEntries (
- IN LIST_ENTRY *FirstEntry,
- IN LIST_ENTRY *SecondEntry
+ IN OUT LIST_ENTRY *FirstEntry,
+ IN OUT LIST_ENTRY *SecondEntry
);
+
/**
Removes a node from a doubly linked list, and returns the node that follows
the removed node.
@@ -973,13 +1967,13 @@ SwapListEntries (
If Entry is NULL, then ASSERT().
If Entry is the head node of an empty list, then ASSERT().
- If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
- linked list containing Entry, including the Entry node, is greater than
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
+ linked list containing Entry, including the Entry node, is greater than
or equal to PcdMaximumLinkedListLength, then ASSERT().
- @param Entry A pointer to a node in a linked list
+ @param Entry A pointer to a node in a linked list.
- @return Entry
+ @return Entry.
**/
LIST_ENTRY *
@@ -1004,7 +1998,7 @@ RemoveEntryList (
@param Operand The 64-bit operand to shift left.
@param Count The number of bits to shift left.
- @return Operand << Count
+ @return Operand << Count.
**/
UINT64
@@ -1014,6 +2008,7 @@ LShiftU64 (
IN UINTN Count
);
+
/**
Shifts a 64-bit integer right between 0 and 63 bits. This high bits are
filled with zeros. The shifted value is returned.
@@ -1036,6 +2031,7 @@ RShiftU64 (
IN UINTN Count
);
+
/**
Shifts a 64-bit integer right between 0 and 63 bits. The high bits are filled
with original integer's bit 63. The shifted value is returned.
@@ -1058,6 +2054,7 @@ ARShiftU64 (
IN UINTN Count
);
+
/**
Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
with the high bits that were rotated.
@@ -1071,7 +2068,7 @@ ARShiftU64 (
@param Operand The 32-bit operand to rotate left.
@param Count The number of bits to rotate left.
- @return Operand <<< Count
+ @return Operand << Count
**/
UINT32
@@ -1081,6 +2078,7 @@ LRotU32 (
IN UINTN Count
);
+
/**
Rotates a 32-bit integer right between 0 and 31 bits, filling the high bits
with the low bits that were rotated.
@@ -1094,7 +2092,7 @@ LRotU32 (
@param Operand The 32-bit operand to rotate right.
@param Count The number of bits to rotate right.
- @return Operand >>> Count
+ @return Operand >> Count
**/
UINT32
@@ -1104,6 +2102,7 @@ RRotU32 (
IN UINTN Count
);
+
/**
Rotates a 64-bit integer left between 0 and 63 bits, filling the low bits
with the high bits that were rotated.
@@ -1117,7 +2116,7 @@ RRotU32 (
@param Operand The 64-bit operand to rotate left.
@param Count The number of bits to rotate left.
- @return Operand <<< Count
+ @return Operand << Count
**/
UINT64
@@ -1127,6 +2126,7 @@ LRotU64 (
IN UINTN Count
);
+
/**
Rotates a 64-bit integer right between 0 and 63 bits, filling the high bits
with the high low bits that were rotated.
@@ -1140,7 +2140,7 @@ LRotU64 (
@param Operand The 64-bit operand to rotate right.
@param Count The number of bits to rotate right.
- @return Operand >>> Count
+ @return Operand >> Count
**/
UINT64
@@ -1150,6 +2150,7 @@ RRotU64 (
IN UINTN Count
);
+
/**
Returns the bit position of the lowest bit set in a 32-bit value.
@@ -1159,8 +2160,8 @@ RRotU64 (
@param Operand The 32-bit operand to evaluate.
- @return Position of the lowest bit set in Operand if found.
- @retval -1 Operand is zero.
+ @retval 0..31 The lowest bit set in Operand was found.
+ @retval -1 Operand is zero.
**/
INTN
@@ -1169,6 +2170,7 @@ LowBitSet32 (
IN UINT32 Operand
);
+
/**
Returns the bit position of the lowest bit set in a 64-bit value.
@@ -1178,8 +2180,9 @@ LowBitSet32 (
@param Operand The 64-bit operand to evaluate.
- @return Position of the lowest bit set in Operand if found.
- @retval -1 Operand is zero.
+ @retval 0..63 The lowest bit set in Operand was found.
+ @retval -1 Operand is zero.
+
**/
INTN
@@ -1188,6 +2191,7 @@ LowBitSet64 (
IN UINT64 Operand
);
+
/**
Returns the bit position of the highest bit set in a 32-bit value. Equivalent
to log2(x).
@@ -1198,8 +2202,8 @@ LowBitSet64 (
@param Operand The 32-bit operand to evaluate.
- @return Position of the highest bit set in Operand if found.
- @retval -1 Operand is zero.
+ @retval 0..31 Position of the highest bit set in Operand if found.
+ @retval -1 Operand is zero.
**/
INTN
@@ -1208,6 +2212,7 @@ HighBitSet32 (
IN UINT32 Operand
);
+
/**
Returns the bit position of the highest bit set in a 64-bit value. Equivalent
to log2(x).
@@ -1218,8 +2223,8 @@ HighBitSet32 (
@param Operand The 64-bit operand to evaluate.
- @return Position of the highest bit set in Operand if found.
- @retval -1 Operand is zero.
+ @retval 0..63 Position of the highest bit set in Operand if found.
+ @retval -1 Operand is zero.
**/
INTN
@@ -1228,9 +2233,10 @@ HighBitSet64 (
IN UINT64 Operand
);
+
/**
Returns the value of the highest bit set in a 32-bit value. Equivalent to
- 1 << HighBitSet32(x).
+ 1 << log2(x).
This function computes the value of the highest bit set in the 32-bit value
specified by Operand. If Operand is zero, then zero is returned.
@@ -1247,9 +2253,10 @@ GetPowerOfTwo32 (
IN UINT32 Operand
);
+
/**
Returns the value of the highest bit set in a 64-bit value. Equivalent to
- 1 << HighBitSet64(x).
+ 1 << log2(x).
This function computes the value of the highest bit set in the 64-bit value
specified by Operand. If Operand is zero, then zero is returned.
@@ -1266,16 +2273,17 @@ GetPowerOfTwo64 (
IN UINT64 Operand
);
+
/**
- Switches the endianess of a 16-bit integer.
+ Switches the endianness of a 16-bit integer.
This function swaps the bytes in a 16-bit unsigned value to switch the value
from little endian to big endian or vice versa. The byte swapped value is
returned.
- @param Operand A 16-bit unsigned value.
+ @param Value A 16-bit unsigned value.
- @return The byte swaped Operand.
+ @return The byte swapped Value.
**/
UINT16
@@ -1284,16 +2292,17 @@ SwapBytes16 (
IN UINT16 Value
);
+
/**
- Switches the endianess of a 32-bit integer.
+ Switches the endianness of a 32-bit integer.
This function swaps the bytes in a 32-bit unsigned value to switch the value
from little endian to big endian or vice versa. The byte swapped value is
returned.
- @param Operand A 32-bit unsigned value.
+ @param Value A 32-bit unsigned value.
- @return The byte swaped Operand.
+ @return The byte swapped Value.
**/
UINT32
@@ -1302,16 +2311,17 @@ SwapBytes32 (
IN UINT32 Value
);
+
/**
- Switches the endianess of a 64-bit integer.
+ Switches the endianness of a 64-bit integer.
This function swaps the bytes in a 64-bit unsigned value to switch the value
from little endian to big endian or vice versa. The byte swapped value is
returned.
- @param Operand A 64-bit unsigned value.
+ @param Value A 64-bit unsigned value.
- @return The byte swaped Operand.
+ @return The byte swapped Value.
**/
UINT64
@@ -1320,6 +2330,7 @@ SwapBytes64 (
IN UINT64 Value
);
+
/**
Multiples a 64-bit unsigned integer by a 32-bit unsigned integer and
generates a 64-bit unsigned result.
@@ -1328,8 +2339,6 @@ SwapBytes64 (
unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
bit unsigned result is returned.
- If the result overflows, then ASSERT().
-
@param Multiplicand A 64-bit unsigned value.
@param Multiplier A 32-bit unsigned value.
@@ -1343,6 +2352,7 @@ MultU64x32 (
IN UINT32 Multiplier
);
+
/**
Multiples a 64-bit unsigned integer by a 64-bit unsigned integer and
generates a 64-bit unsigned result.
@@ -1351,12 +2361,10 @@ MultU64x32 (
unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
bit unsigned result is returned.
- If the result overflows, then ASSERT().
-
@param Multiplicand A 64-bit unsigned value.
@param Multiplier A 64-bit unsigned value.
- @return Multiplicand * Multiplier
+ @return Multiplicand * Multiplier.
**/
UINT64
@@ -1366,6 +2374,7 @@ MultU64x64 (
IN UINT64 Multiplier
);
+
/**
Multiples a 64-bit signed integer by a 64-bit signed integer and generates a
64-bit signed result.
@@ -1374,8 +2383,6 @@ MultU64x64 (
signed value Multiplier and generates a 64-bit signed result. This 64-bit
signed result is returned.
- If the result overflows, then ASSERT().
-
@param Multiplicand A 64-bit signed value.
@param Multiplier A 64-bit signed value.
@@ -1389,6 +2396,7 @@ MultS64x64 (
IN INT64 Multiplier
);
+
/**
Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
a 64-bit unsigned result.
@@ -1402,7 +2410,7 @@ MultS64x64 (
@param Dividend A 64-bit unsigned value.
@param Divisor A 32-bit unsigned value.
- @return Dividend / Divisor
+ @return Dividend / Divisor.
**/
UINT64
@@ -1412,6 +2420,7 @@ DivU64x32 (
IN UINT32 Divisor
);
+
/**
Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
a 32-bit unsigned remainder.
@@ -1425,7 +2434,7 @@ DivU64x32 (
@param Dividend A 64-bit unsigned value.
@param Divisor A 32-bit unsigned value.
- @return Dividend % Divisor
+ @return Dividend % Divisor.
**/
UINT32
@@ -1435,6 +2444,7 @@ ModU64x32 (
IN UINT32 Divisor
);
+
/**
Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
a 64-bit unsigned result and an optional 32-bit unsigned remainder.
@@ -1451,7 +2461,7 @@ ModU64x32 (
@param Remainder A pointer to a 32-bit unsigned value. This parameter is
optional and may be NULL.
- @return Dividend / Divisor
+ @return Dividend / Divisor.
**/
UINT64
@@ -1462,6 +2472,7 @@ DivU64x32Remainder (
OUT UINT32 *Remainder OPTIONAL
);
+
/**
Divides a 64-bit unsigned integer by a 64-bit unsigned integer and generates
a 64-bit unsigned result and an optional 64-bit unsigned remainder.
@@ -1478,7 +2489,7 @@ DivU64x32Remainder (
@param Remainder A pointer to a 64-bit unsigned value. This parameter is
optional and may be NULL.
- @return Dividend / Divisor
+ @return Dividend / Divisor.
**/
UINT64
@@ -1489,6 +2500,7 @@ DivU64x64Remainder (
OUT UINT64 *Remainder OPTIONAL
);
+
/**
Divides a 64-bit signed integer by a 64-bit signed integer and generates a
64-bit signed result and a optional 64-bit signed remainder.
@@ -1498,6 +2510,10 @@ DivU64x64Remainder (
NULL, then the 64-bit signed remainder is returned in Remainder. This
function returns the 64-bit signed quotient.
+ It is the caller's responsibility to not call this function with a Divisor of 0.
+ If Divisor is 0, then the quotient and remainder should be assumed to be
+ the largest negative integer.
+
If Divisor is 0, then ASSERT().
@param Dividend A 64-bit signed value.
@@ -1505,7 +2521,7 @@ DivU64x64Remainder (
@param Remainder A pointer to a 64-bit signed value. This parameter is
optional and may be NULL.
- @return Dividend / Divisor
+ @return Dividend / Divisor.
**/
INT64
@@ -1516,6 +2532,7 @@ DivS64x64Remainder (
OUT INT64 *Remainder OPTIONAL
);
+
/**
Reads a 16-bit value from memory that may be unaligned.
@@ -1524,17 +2541,18 @@ DivS64x64Remainder (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 16-bit value that may be unaligned.
+ @param Buffer The pointer to a 16-bit value that may be unaligned.
- @return *Uint16
+ @return The 16-bit value read from Buffer.
**/
UINT16
EFIAPI
ReadUnaligned16 (
- IN CONST UINT16 *Uint16
+ IN CONST UINT16 *Buffer
);
+
/**
Writes a 16-bit value to memory that may be unaligned.
@@ -1544,19 +2562,20 @@ ReadUnaligned16 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 16-bit value that may be unaligned.
+ @param Buffer The pointer to a 16-bit value that may be unaligned.
@param Value 16-bit value to write to Buffer.
- @return Value
+ @return The 16-bit value to write to Buffer.
**/
UINT16
EFIAPI
WriteUnaligned16 (
- OUT UINT16 *Uint16,
- IN UINT16 Value
+ OUT UINT16 *Buffer,
+ IN UINT16 Value
);
+
/**
Reads a 24-bit value from memory that may be unaligned.
@@ -1565,17 +2584,18 @@ WriteUnaligned16 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 24-bit value that may be unaligned.
+ @param Buffer The pointer to a 24-bit value that may be unaligned.
- @return The value read.
+ @return The 24-bit value read from Buffer.
**/
UINT32
EFIAPI
ReadUnaligned24 (
- IN CONST UINT32 *Buffer
+ IN CONST UINT32 *Buffer
);
+
/**
Writes a 24-bit value to memory that may be unaligned.
@@ -1585,19 +2605,20 @@ ReadUnaligned24 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 24-bit value that may be unaligned.
+ @param Buffer The pointer to a 24-bit value that may be unaligned.
@param Value 24-bit value to write to Buffer.
- @return The value written.
+ @return The 24-bit value to write to Buffer.
**/
UINT32
EFIAPI
WriteUnaligned24 (
- OUT UINT32 *Buffer,
- IN UINT32 Value
+ OUT UINT32 *Buffer,
+ IN UINT32 Value
);
+
/**
Reads a 32-bit value from memory that may be unaligned.
@@ -1606,17 +2627,18 @@ WriteUnaligned24 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 32-bit value that may be unaligned.
+ @param Buffer The pointer to a 32-bit value that may be unaligned.
- @return *Uint32
+ @return The 32-bit value read from Buffer.
**/
UINT32
EFIAPI
ReadUnaligned32 (
- IN CONST UINT32 *Uint32
+ IN CONST UINT32 *Buffer
);
+
/**
Writes a 32-bit value to memory that may be unaligned.
@@ -1626,19 +2648,20 @@ ReadUnaligned32 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 32-bit value that may be unaligned.
+ @param Buffer The pointer to a 32-bit value that may be unaligned.
@param Value 32-bit value to write to Buffer.
- @return Value
+ @return The 32-bit value to write to Buffer.
**/
UINT32
EFIAPI
WriteUnaligned32 (
- OUT UINT32 *Uint32,
- IN UINT32 Value
+ OUT UINT32 *Buffer,
+ IN UINT32 Value
);
+
/**
Reads a 64-bit value from memory that may be unaligned.
@@ -1647,17 +2670,18 @@ WriteUnaligned32 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 64-bit value that may be unaligned.
+ @param Buffer The pointer to a 64-bit value that may be unaligned.
- @return *Uint64
+ @return The 64-bit value read from Buffer.
**/
UINT64
EFIAPI
ReadUnaligned64 (
- IN CONST UINT64 *Uint64
+ IN CONST UINT64 *Buffer
);
+
/**
Writes a 64-bit value to memory that may be unaligned.
@@ -1667,19 +2691,20 @@ ReadUnaligned64 (
If the Buffer is NULL, then ASSERT().
- @param Buffer Pointer to a 64-bit value that may be unaligned.
+ @param Buffer The pointer to a 64-bit value that may be unaligned.
@param Value 64-bit value to write to Buffer.
- @return Value
+ @return The 64-bit value to write to Buffer.
**/
UINT64
EFIAPI
WriteUnaligned64 (
- OUT UINT64 *Uint64,
- IN UINT64 Value
+ OUT UINT64 *Buffer,
+ IN UINT64 Value
);
+
//
// Bit Field Functions
//
@@ -1711,6 +2736,7 @@ BitFieldRead8 (
IN UINTN EndBit
);
+
/**
Writes a bit field to an 8-bit value, and returns the result.
@@ -1722,6 +2748,7 @@ BitFieldRead8 (
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1742,11 +2769,12 @@ BitFieldWrite8 (
IN UINT8 Value
);
+
/**
Reads a bit field from an 8-bit value, performs a bitwise OR, and returns the
result.
- Performs a bitwise inclusive OR between the bit field specified by StartBit
+ Performs a bitwise OR between the bit field specified by StartBit
and EndBit in Operand and the value specified by OrData. All other bits in
Operand are preserved. The new 8-bit value is returned.
@@ -1754,6 +2782,7 @@ BitFieldWrite8 (
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1774,6 +2803,7 @@ BitFieldOr8 (
IN UINT8 OrData
);
+
/**
Reads a bit field from an 8-bit value, performs a bitwise AND, and returns
the result.
@@ -1786,6 +2816,7 @@ BitFieldOr8 (
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1806,19 +2837,22 @@ BitFieldAnd8 (
IN UINT8 AndData
);
+
/**
Reads a bit field from an 8-bit value, performs a bitwise AND followed by a
bitwise OR, and returns the result.
Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
+ in Operand and the value specified by AndData, followed by a bitwise
+ OR with value specified by OrData. All other bits in Operand are
preserved. The new 8-bit value is returned.
If 8-bit operations are not supported, then ASSERT().
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1841,6 +2875,7 @@ BitFieldAndThenOr8 (
IN UINT8 OrData
);
+
/**
Returns a bit field from a 16-bit value.
@@ -1868,6 +2903,7 @@ BitFieldRead16 (
IN UINTN EndBit
);
+
/**
Writes a bit field to a 16-bit value, and returns the result.
@@ -1879,6 +2915,7 @@ BitFieldRead16 (
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1899,11 +2936,12 @@ BitFieldWrite16 (
IN UINT16 Value
);
+
/**
Reads a bit field from a 16-bit value, performs a bitwise OR, and returns the
result.
- Performs a bitwise inclusive OR between the bit field specified by StartBit
+ Performs a bitwise OR between the bit field specified by StartBit
and EndBit in Operand and the value specified by OrData. All other bits in
Operand are preserved. The new 16-bit value is returned.
@@ -1911,6 +2949,7 @@ BitFieldWrite16 (
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1931,6 +2970,7 @@ BitFieldOr16 (
IN UINT16 OrData
);
+
/**
Reads a bit field from a 16-bit value, performs a bitwise AND, and returns
the result.
@@ -1943,6 +2983,7 @@ BitFieldOr16 (
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1963,19 +3004,22 @@ BitFieldAnd16 (
IN UINT16 AndData
);
+
/**
Reads a bit field from a 16-bit value, performs a bitwise AND followed by a
bitwise OR, and returns the result.
Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
+ in Operand and the value specified by AndData, followed by a bitwise
+ OR with value specified by OrData. All other bits in Operand are
preserved. The new 16-bit value is returned.
If 16-bit operations are not supported, then ASSERT().
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, 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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -1998,6 +3042,7 @@ BitFieldAndThenOr16 (
IN UINT16 OrData
);
+
/**
Returns a bit field from a 32-bit value.
@@ -2025,6 +3070,7 @@ BitFieldRead32 (
IN UINTN EndBit
);
+
/**
Writes a bit field to a 32-bit value, and returns the result.
@@ -2036,6 +3082,7 @@ BitFieldRead32 (
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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -2056,11 +3103,12 @@ BitFieldWrite32 (
IN UINT32 Value
);
+
/**
Reads a bit field from a 32-bit value, performs a bitwise OR, and returns the
result.
- Performs a bitwise inclusive OR between the bit field specified by StartBit
+ Performs a bitwise OR between the bit field specified by StartBit
and EndBit in Operand and the value specified by OrData. All other bits in
Operand are preserved. The new 32-bit value is returned.
@@ -2068,13 +3116,14 @@ BitFieldWrite32 (
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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..31.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..31.
- @param OrData The value to OR with the read value from the value
+ @param OrData The value to OR with the read value from the value.
@return The new 32-bit value.
@@ -2088,6 +3137,7 @@ BitFieldOr32 (
IN UINT32 OrData
);
+
/**
Reads a bit field from a 32-bit value, performs a bitwise AND, and returns
the result.
@@ -2100,6 +3150,7 @@ BitFieldOr32 (
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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -2120,19 +3171,22 @@ BitFieldAnd32 (
IN UINT32 AndData
);
+
/**
Reads a bit field from a 32-bit value, performs a bitwise AND followed by a
bitwise OR, and returns the result.
Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
+ in Operand and the value specified by AndData, followed by a bitwise
+ OR with value specified by OrData. All other bits in Operand are
preserved. The new 32-bit value is returned.
If 32-bit operations are not supported, then ASSERT().
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().
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -2155,6 +3209,7 @@ BitFieldAndThenOr32 (
IN UINT32 OrData
);
+
/**
Returns a bit field from a 64-bit value.
@@ -2171,744 +3226,2168 @@ BitFieldAndThenOr32 (
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..63.
- @return The bit field read.
+ @return The bit field read.
+
+**/
+UINT64
+EFIAPI
+BitFieldRead64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to a 64-bit value, and returns the result.
+
+ Writes Value to the bit field specified by the StartBit and the EndBit in
+ Operand. All other bits in Operand are preserved. The new 64-bit value is
+ returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ 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().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param Value New value of the bit field.
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldWrite64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads a bit field from a 64-bit value, performs a bitwise OR, and returns the
+ result.
+
+ Performs a bitwise OR between the bit field specified by StartBit
+ and EndBit in Operand and the value specified by OrData. All other bits in
+ Operand are preserved. The new 64-bit value is returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ 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().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param OrData The value to OR with the read value from the value
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldOr64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 OrData
+ );
+
+
+/**
+ Reads a bit field from a 64-bit value, performs a bitwise AND, and returns
+ the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData. All other bits in Operand are
+ preserved. The new 64-bit value is returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ 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().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param AndData The value to AND with the read value from the value
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldAnd64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 AndData
+ );
+
+
+/**
+ Reads a bit field from a 64-bit value, performs a bitwise AND followed by a
+ bitwise OR, and returns the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData, followed by a bitwise
+ OR with value specified by OrData. All other bits in Operand are
+ preserved. The new 64-bit value is returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ 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().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param AndData The value to AND with the read value from the value.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldAndThenOr64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 AndData,
+ IN UINT64 OrData
+ );
+
+//
+// Base Library Checksum Functions
+//
+
+/**
+ Returns the sum of all elements in a buffer in unit of UINT8.
+ During calculation, the carry bits are dropped.
+
+ This function calculates the sum of all elements in a buffer
+ in unit of UINT8. The carry bits in result of addition are dropped.
+ The result is returned as UINT8. If Length is Zero, then Zero is
+ returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT8
+EFIAPI
+CalculateSum8 (
+ IN CONST UINT8 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer
+ of 8-bit values.
+
+ This function first calculates the sum of the 8-bit values in the
+ buffer specified by Buffer and Length. The carry bits in the result
+ of addition are dropped. Then, the two's complement of the sum is
+ returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The two's complement checksum of Buffer.
+
+**/
+UINT8
+EFIAPI
+CalculateCheckSum8 (
+ IN CONST UINT8 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the sum of all elements in a buffer of 16-bit values. During
+ calculation, the carry bits are dropped.
+
+ This function calculates the sum of the 16-bit values in the buffer
+ specified by Buffer and Length. The carry bits in result of addition are dropped.
+ The 16-bit result is returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT16
+EFIAPI
+CalculateSum16 (
+ IN CONST UINT16 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer of
+ 16-bit values.
+
+ This function first calculates the sum of the 16-bit values in the buffer
+ specified by Buffer and Length. The carry bits in the result of addition
+ are dropped. Then, the two's complement of the sum is returned. If Length
+ is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The two's complement checksum of Buffer.
+
+**/
+UINT16
+EFIAPI
+CalculateCheckSum16 (
+ IN CONST UINT16 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the sum of all elements in a buffer of 32-bit values. During
+ calculation, the carry bits are dropped.
+
+ This function calculates the sum of the 32-bit values in the buffer
+ specified by Buffer and Length. The carry bits in result of addition are dropped.
+ The 32-bit result is returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT32
+EFIAPI
+CalculateSum32 (
+ IN CONST UINT32 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer of
+ 32-bit values.
+
+ This function first calculates the sum of the 32-bit values in the buffer
+ specified by Buffer and Length. The carry bits in the result of addition
+ are dropped. Then, the two's complement of the sum is returned. If Length
+ is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The two's complement checksum of Buffer.
+
+**/
+UINT32
+EFIAPI
+CalculateCheckSum32 (
+ IN CONST UINT32 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the sum of all elements in a buffer of 64-bit values. During
+ calculation, the carry bits are dropped.
+
+ This function calculates the sum of the 64-bit values in the buffer
+ specified by Buffer and Length. The carry bits in result of addition are dropped.
+ The 64-bit result is returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT64
+EFIAPI
+CalculateSum64 (
+ IN CONST UINT64 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer of
+ 64-bit values.
+
+ This function first calculates the sum of the 64-bit values in the buffer
+ specified by Buffer and Length. The carry bits in the result of addition
+ are dropped. Then, the two's complement of the sum is returned. If Length
+ is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer The pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The two's complement checksum of Buffer.
+
+**/
+UINT64
+EFIAPI
+CalculateCheckSum64 (
+ IN CONST UINT64 *Buffer,
+ IN UINTN Length
+ );
+
+
+//
+// Base Library CPU Functions
+//
+
+/**
+ Function entry point used when a stack switch is requested with SwitchStack()
+
+ @param Context1 Context1 parameter passed into SwitchStack().
+ @param Context2 Context2 parameter passed into SwitchStack().
+
+**/
+typedef
+VOID
+(EFIAPI *SWITCH_STACK_ENTRY_POINT)(
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2 OPTIONAL
+ );
+
+
+/**
+ Used to serialize load and store operations.
+
+ All loads and stores that proceed calls to this function are guaranteed to be
+ globally visible when this function returns.
+
+**/
+VOID
+EFIAPI
+MemoryFence (
+ VOID
+ );
+
+
+/**
+ Saves the current CPU context that can be restored with a call to LongJump()
+ and returns 0.
+
+ Saves the current CPU context in the buffer specified by JumpBuffer and
+ returns 0. The initial call to SetJump() must always return 0. Subsequent
+ calls to LongJump() cause a non-zero value to be returned by SetJump().
+
+ If JumpBuffer is NULL, then ASSERT().
+ For Itanium processors, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
+
+ NOTE: The structure BASE_LIBRARY_JUMP_BUFFER is CPU architecture specific.
+ The same structure must never be used for more than one CPU architecture context.
+ For example, a BASE_LIBRARY_JUMP_BUFFER allocated by an IA-32 module must never be used from an x64 module.
+ SetJump()/LongJump() is not currently supported for the EBC processor type.
+
+ @param JumpBuffer A pointer to CPU context buffer.
+
+ @retval 0 Indicates a return from SetJump().
+
+**/
+UINTN
+EFIAPI
+SetJump (
+ OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
+ );
+
+
+/**
+ Restores the CPU context that was saved with SetJump().
+
+ Restores the CPU context from the buffer specified by JumpBuffer. This
+ function never returns to the caller. Instead is resumes execution based on
+ the state of JumpBuffer.
+
+ If JumpBuffer is NULL, then ASSERT().
+ For Itanium processors, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
+ If Value is 0, then ASSERT().
+
+ @param JumpBuffer A pointer to CPU context buffer.
+ @param Value The value to return when the SetJump() context is
+ restored and must be non-zero.
+
+**/
+VOID
+EFIAPI
+LongJump (
+ IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer,
+ IN UINTN Value
+ );
+
+
+/**
+ Enables CPU interrupts.
+
+**/
+VOID
+EFIAPI
+EnableInterrupts (
+ VOID
+ );
+
+
+/**
+ Disables CPU interrupts.
+
+**/
+VOID
+EFIAPI
+DisableInterrupts (
+ VOID
+ );
+
+
+/**
+ Disables CPU interrupts and returns the interrupt state prior to the disable
+ operation.
+
+ @retval TRUE CPU interrupts were enabled on entry to this call.
+ @retval FALSE CPU interrupts were disabled on entry to this call.
+
+**/
+BOOLEAN
+EFIAPI
+SaveAndDisableInterrupts (
+ VOID
+ );
+
+
+/**
+ Enables CPU interrupts for the smallest window required to capture any
+ pending interrupts.
+
+**/
+VOID
+EFIAPI
+EnableDisableInterrupts (
+ VOID
+ );
+
+
+/**
+ Retrieves the current CPU interrupt state.
+
+ Returns TRUE if interrupts are currently enabled. Otherwise
+ returns FALSE.
+
+ @retval TRUE CPU interrupts are enabled.
+ @retval FALSE CPU interrupts are disabled.
+
+**/
+BOOLEAN
+EFIAPI
+GetInterruptState (
+ VOID
+ );
+
+
+/**
+ Set the current CPU interrupt state.
+
+ Sets the current CPU interrupt state to the state specified by
+ InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
+ InterruptState is FALSE, then interrupts are disabled. InterruptState is
+ returned.
+
+ @param InterruptState TRUE if interrupts should enabled. FALSE if
+ interrupts should be disabled.
+
+ @return InterruptState
+
+**/
+BOOLEAN
+EFIAPI
+SetInterruptState (
+ IN BOOLEAN InterruptState
+ );
+
+
+/**
+ Requests CPU to pause for a short period of time.
+
+ Requests CPU to pause for a short period of time. Typically used in MP
+ systems to prevent memory starvation while waiting for a spin lock.
+
+**/
+VOID
+EFIAPI
+CpuPause (
+ VOID
+ );
+
+
+/**
+ Transfers control to a function starting with a new stack.
+
+ Transfers control to the function specified by EntryPoint using the
+ new stack specified by NewStack and passing in the parameters specified
+ by Context1 and Context2. Context1 and Context2 are optional and may
+ be NULL. The function EntryPoint must never return. This function
+ supports a variable number of arguments following the NewStack parameter.
+ These additional arguments are ignored on IA-32, x64, and EBC architectures.
+ Itanium processors expect one additional parameter of type VOID * that specifies
+ the new backing store pointer.
+
+ If EntryPoint is NULL, then ASSERT().
+ If NewStack is NULL, then ASSERT().
+
+ @param EntryPoint A pointer to function to call with the new stack.
+ @param Context1 A pointer to the context to pass into the EntryPoint
+ function.
+ @param Context2 A pointer to the context to pass into the EntryPoint
+ function.
+ @param NewStack A pointer to the new stack to use for the EntryPoint
+ function.
+ @param ... This variable argument list is ignored for IA-32, x64, and
+ EBC architectures. For Itanium processors, this variable
+ argument list is expected to contain a single parameter of
+ type VOID * that specifies the new backing store pointer.
+
+
+**/
+VOID
+EFIAPI
+SwitchStack (
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2, OPTIONAL
+ IN VOID *NewStack,
+ ...
+ );
+
+
+/**
+ Generates a breakpoint on the CPU.
+
+ Generates a breakpoint on the CPU. The breakpoint must be implemented such
+ that code can resume normal execution after the breakpoint.
+
+**/
+VOID
+EFIAPI
+CpuBreakpoint (
+ VOID
+ );
+
+
+/**
+ Executes an infinite loop.
+
+ Forces the CPU to execute an infinite loop. A debugger may be used to skip
+ past the loop and the code that follows the loop must execute properly. This
+ implies that the infinite loop must not cause the code that follow it to be
+ optimized away.
+
+**/
+VOID
+EFIAPI
+CpuDeadLoop (
+ VOID
+ );
+
+#if defined (MDE_CPU_IPF)
+
+/**
+ Flush a range of cache lines in the cache coherency domain of the calling
+ CPU.
+
+ Flushes the cache lines specified by Address and Length. If Address is not aligned
+ on a cache line boundary, then entire cache line containing Address is flushed.
+ If Address + Length is not aligned on a cache line boundary, then the entire cache
+ line containing Address + Length - 1 is flushed. This function may choose to flush
+ the entire cache if that is more efficient than flushing the specified range. If
+ Length is 0, the no cache lines are flushed. Address is returned.
+ This function is only available on Itanium processors.
+
+ If Length is greater than (MAX_ADDRESS - Address + 1), then ASSERT().
+
+ @param Address The base address of the instruction lines to invalidate. If
+ the CPU is in a physical addressing mode, then Address is a
+ physical address. If the CPU is in a virtual addressing mode,
+ then Address is a virtual address.
+
+ @param Length The number of bytes to invalidate from the instruction cache.
+
+ @return Address.
+
+**/
+VOID *
+EFIAPI
+AsmFlushCacheRange (
+ IN VOID *Address,
+ IN UINTN Length
+ );
+
+
+/**
+ Executes an FC instruction.
+ Executes an FC instruction on the cache line specified by Address.
+ The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary).
+ An implementation may flush a larger region. This function is only available on Itanium processors.
+
+ @param Address The Address of cache line to be flushed.
+
+ @return The address of FC instruction executed.
+
+**/
+UINT64
+EFIAPI
+AsmFc (
+ IN UINT64 Address
+ );
+
+
+/**
+ Executes an FC.I instruction.
+ Executes an FC.I instruction on the cache line specified by Address.
+ The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary).
+ An implementation may flush a larger region. This function is only available on Itanium processors.
+
+ @param Address The Address of cache line to be flushed.
+
+ @return The address of the FC.I instruction executed.
+
+**/
+UINT64
+EFIAPI
+AsmFci (
+ IN UINT64 Address
+ );
+
+
+/**
+ Reads the current value of a Processor Identifier Register (CPUID).
+
+ Reads and returns the current value of Processor Identifier Register specified by Index.
+ The Index of largest implemented CPUID (One less than the number of implemented CPUID
+ registers) is determined by CPUID [3] bits {7:0}.
+ No parameter checking is performed on Index. If the Index value is beyond the
+ implemented CPUID 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 Itanium processors.
+
+ @param Index The 8-bit Processor Identifier Register index to read.
+
+ @return The current value of Processor Identifier Register specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadCpuid (
+ IN UINT8 Index
+ );
+
+
+/**
+ Reads the current value of 64-bit Processor Status Register (PSR).
+ This function is only available on Itanium processors.
+
+ @return The current value of PSR.
+
+**/
+UINT64
+EFIAPI
+AsmReadPsr (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Processor Status Register (PSR).
+
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of PSR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to PSR.
+
+ @return The 64-bit value written to the PSR.
+
+**/
+UINT64
+EFIAPI
+AsmWritePsr (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #0 (KR0).
+
+ Reads and returns the current value of KR0.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR0.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #1 (KR1).
+
+ Reads and returns the current value of KR1.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR1.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr1 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #2 (KR2).
+
+ Reads and returns the current value of KR2.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR2.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr2 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #3 (KR3).
+
+ Reads and returns the current value of KR3.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR3.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr3 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #4 (KR4).
+
+ Reads and returns the current value of KR4.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR4.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr4 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #5 (KR5).
+
+ Reads and returns the current value of KR5.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR5.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr5 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #6 (KR6).
+
+ Reads and returns the current value of KR6.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR6.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr6 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #7 (KR7).
+
+ Reads and returns the current value of KR7.
+ This function is only available on Itanium processors.
+
+ @return The current value of KR7.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr7 (
+ VOID
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #0 (KR0).
+
+ Writes the current value of KR0. The 64-bit value written to
+ the KR0 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR0.
+
+ @return The 64-bit value written to the KR0.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr0 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #1 (KR1).
+
+ Writes the current value of KR1. The 64-bit value written to
+ the KR1 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR1.
+
+ @return The 64-bit value written to the KR1.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr1 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #2 (KR2).
+
+ Writes the current value of KR2. The 64-bit value written to
+ the KR2 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR2.
+
+ @return The 64-bit value written to the KR2.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr2 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #3 (KR3).
+
+ Writes the current value of KR3. The 64-bit value written to
+ the KR3 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR3.
+
+ @return The 64-bit value written to the KR3.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr3 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #4 (KR4).
+
+ Writes the current value of KR4. The 64-bit value written to
+ the KR4 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR4.
+
+ @return The 64-bit value written to the KR4.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr4 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #5 (KR5).
+
+ Writes the current value of KR5. The 64-bit value written to
+ the KR5 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR5.
+
+ @return The 64-bit value written to the KR5.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr5 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #6 (KR6).
+
+ Writes the current value of KR6. The 64-bit value written to
+ the KR6 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR6.
+
+ @return The 64-bit value written to the KR6.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr6 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #7 (KR7).
+
+ Writes the current value of KR7. The 64-bit value written to
+ the KR7 is returned. This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to KR7.
+
+ @return The 64-bit value written to the KR7.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr7 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Interval Timer Counter Register (ITC).
+
+ Reads and returns the current value of ITC.
+ This function is only available on Itanium processors.
+
+ @return The current value of ITC.
+
+**/
+UINT64
+EFIAPI
+AsmReadItc (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Interval Timer Vector Register (ITV).
+
+ Reads and returns the current value of ITV.
+ This function is only available on Itanium processors.
+
+ @return The current value of ITV.
+
+**/
+UINT64
+EFIAPI
+AsmReadItv (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Interval Timer Match Register (ITM).
+
+ Reads and returns the current value of ITM.
+ This function is only available on Itanium processors.
+
+ @return The current value of ITM.
+**/
+UINT64
+EFIAPI
+AsmReadItm (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Interval Timer Counter Register (ITC).
+
+ Writes the current value of ITC. The 64-bit value written to the ITC is returned.
+ This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to ITC.
+
+ @return The 64-bit value written to the ITC.
+
+**/
+UINT64
+EFIAPI
+AsmWriteItc (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Interval Timer Match Register (ITM).
+
+ Writes the current value of ITM. The 64-bit value written to the ITM is returned.
+ This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to ITM.
+
+ @return The 64-bit value written to the ITM.
+
+**/
+UINT64
+EFIAPI
+AsmWriteItm (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Interval Timer Vector Register (ITV).
+
+ Writes the current value of ITV. The 64-bit value written to the ITV is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of ITV must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to ITV.
+
+ @return The 64-bit value written to the ITV.
+
+**/
+UINT64
+EFIAPI
+AsmWriteItv (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Default Control Register (DCR).
+
+ Reads and returns the current value of DCR. This function is only available on Itanium processors.
+
+ @return The current value of DCR.
+
+**/
+UINT64
+EFIAPI
+AsmReadDcr (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Interruption Vector Address Register (IVA).
+
+ Reads and returns the current value of IVA. This function is only available on Itanium processors.
+
+ @return The current value of IVA.
+**/
+UINT64
+EFIAPI
+AsmReadIva (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Page Table Address Register (PTA).
+
+ Reads and returns the current value of PTA. This function is only available on Itanium processors.
+
+ @return The current value of PTA.
+
+**/
+UINT64
+EFIAPI
+AsmReadPta (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Default Control Register (DCR).
+
+ Writes the current value of DCR. The 64-bit value written to the DCR is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
+
+ @param Value The 64-bit value to write to DCR.
+
+ @return The 64-bit value written to the DCR.
**/
UINT64
EFIAPI
-BitFieldRead64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit
+AsmWriteDcr (
+ IN UINT64 Value
);
-/**
- Writes a bit field to a 64-bit value, and returns the result.
-
- Writes Value to the bit field specified by the StartBit and the EndBit in
- Operand. All other bits in Operand are preserved. The new 64-bit value is
- returned.
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
+/**
+ Writes the current value of 64-bit Interruption Vector Address Register (IVA).
+
+ Writes the current value of IVA. The 64-bit value written to the IVA is returned.
+ The size of vector table is 32 K bytes and is 32 K bytes aligned
+ the low 15 bits of Value is ignored when written.
+ This function is only available on Itanium processors.
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param Value New value of the bit field.
+ @param Value The 64-bit value to write to IVA.
- @return The new 64-bit value.
+ @return The 64-bit value written to the IVA.
**/
UINT64
EFIAPI
-BitFieldWrite64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 Value
+AsmWriteIva (
+ IN UINT64 Value
);
+
/**
- Reads a bit field from a 64-bit value, performs a bitwise OR, and returns the
- result.
+ Writes the current value of 64-bit Page Table Address Register (PTA).
+
+ Writes the current value of PTA. The 64-bit value written to the PTA is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- Performs a bitwise inclusive OR between the bit field specified by StartBit
- and EndBit in Operand and the value specified by OrData. All other bits in
- Operand are preserved. The new 64-bit value is returned.
+ @param Value The 64-bit value to write to PTA.
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
+ @return The 64-bit value written to the PTA.
+**/
+UINT64
+EFIAPI
+AsmWritePta (
+ IN UINT64 Value
+ );
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param OrData The value to OR with the read value from the value
- @return The new 64-bit value.
+/**
+ Reads the current value of Local Interrupt ID Register (LID).
+
+ Reads and returns the current value of LID. This function is only available on Itanium processors.
+
+ @return The current value of LID.
**/
UINT64
EFIAPI
-BitFieldOr64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 OrData
+AsmReadLid (
+ VOID
);
+
/**
- Reads a bit field from a 64-bit value, performs a bitwise AND, and returns
- the result.
+ Reads the current value of External Interrupt Vector Register (IVR).
+
+ Reads and returns the current value of IVR. This function is only available on Itanium processors.
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData. All other bits in Operand are
- preserved. The new 64-bit value is returned.
+ @return The current value of IVR.
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
+**/
+UINT64
+EFIAPI
+AsmReadIvr (
+ VOID
+ );
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param AndData The value to AND with the read value from the value
- @return The new 64-bit value.
+/**
+ Reads the current value of Task Priority Register (TPR).
+
+ Reads and returns the current value of TPR. This function is only available on Itanium processors.
+
+ @return The current value of TPR.
**/
UINT64
EFIAPI
-BitFieldAnd64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 AndData
+AsmReadTpr (
+ VOID
);
+
/**
- Reads a bit field from a 64-bit value, performs a bitwise AND followed by a
- bitwise OR, and returns the result.
+ Reads the current value of External Interrupt Request Register #0 (IRR0).
+
+ Reads and returns the current value of IRR0. This function is only available on Itanium processors.
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
- preserved. The new 64-bit value is returned.
+ @return The current value of IRR0.
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
+**/
+UINT64
+EFIAPI
+AsmReadIrr0 (
+ VOID
+ );
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param AndData The value to AND with the read value from the value.
- @param OrData The value to OR with the result of the AND operation.
- @return The new 64-bit value.
+/**
+ Reads the current value of External Interrupt Request Register #1 (IRR1).
+
+ Reads and returns the current value of IRR1. This function is only available on Itanium processors.
+
+ @return The current value of IRR1.
**/
UINT64
EFIAPI
-BitFieldAndThenOr64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 AndData,
- IN UINT64 OrData
+AsmReadIrr1 (
+ VOID
);
-//
-// Base Library Synchronization Functions
-//
/**
- Retrieves the architecture specific spin lock alignment requirements for
- optimal spin lock performance.
+ Reads the current value of External Interrupt Request Register #2 (IRR2).
+
+ Reads and returns the current value of IRR2. This function is only available on Itanium processors.
- This function retrieves the spin lock alignment requirements for optimal
- performance on a given CPU architecture. The spin lock alignment must be a
- power of two and is returned by this function. If there are no alignment
- requirements, then 1 must be returned. The spin lock synchronization
- functions must function correctly if the spin lock size and alignment values
- returned by this function are not used at all. These values are hints to the
- consumers of the spin lock synchronization functions to obtain optimal spin
- lock performance.
-
- @return The architecture specific spin lock alignment.
+ @return The current value of IRR2.
**/
-UINTN
+UINT64
EFIAPI
-GetSpinLockProperties (
+AsmReadIrr2 (
VOID
);
+
/**
- Initializes a spin lock to the released state and returns the spin lock.
+ Reads the current value of External Interrupt Request Register #3 (IRR3).
+
+ Reads and returns the current value of IRR3. This function is only available on Itanium processors.
- This function initializes the spin lock specified by SpinLock to the released
- state, and returns SpinLock. Optimal performance can be achieved by calling
- GetSpinLockProperties() to determine the size and alignment requirements for
- SpinLock.
+ @return The current value of IRR3.
+
+**/
+UINT64
+EFIAPI
+AsmReadIrr3 (
+ VOID
+ );
- If SpinLock is NULL, then ASSERT().
- @param SpinLock A pointer to the spin lock to initialize to the released
- state.
+/**
+ Reads the current value of Performance Monitor Vector Register (PMV).
+
+ Reads and returns the current value of PMV. This function is only available on Itanium processors.
- @return SpinLock
+ @return The current value of PMV.
**/
-SPIN_LOCK *
+UINT64
EFIAPI
-InitializeSpinLock (
- IN SPIN_LOCK *SpinLock
+AsmReadPmv (
+ VOID
);
+
/**
- Waits until a spin lock can be placed in the acquired state.
+ Reads the current value of Corrected Machine Check Vector Register (CMCV).
+
+ Reads and returns the current value of CMCV. This function is only available on Itanium processors.
- This function checks the state of the spin lock specified by SpinLock. If
- SpinLock is in the released state, then this function places SpinLock in the
- acquired state and returns SpinLock. Otherwise, this function waits
- indefinitely for the spin lock to be released, and then places it in the
- acquired state and returns SpinLock. All state transitions of SpinLock must
- be performed using MP safe mechanisms.
+ @return The current value of CMCV.
+
+**/
+UINT64
+EFIAPI
+AsmReadCmcv (
+ VOID
+ );
- If SpinLock is NULL, then ASSERT().
- If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
- If PcdSpinLockTimeout is not zero, and SpinLock is can not be acquired in
- PcdSpinLockTimeout microseconds, then ASSERT().
- @param SpinLock A pointer to the spin lock to place in the acquired state.
+/**
+ Reads the current value of Local Redirection Register #0 (LRR0).
+
+ Reads and returns the current value of LRR0. This function is only available on Itanium processors.
- @return SpinLock
+ @return The current value of LRR0.
**/
-SPIN_LOCK *
+UINT64
EFIAPI
-AcquireSpinLock (
- IN SPIN_LOCK *SpinLock
+AsmReadLrr0 (
+ VOID
);
+
/**
- Attempts to place a spin lock in the acquired state.
+ Reads the current value of Local Redirection Register #1 (LRR1).
+
+ Reads and returns the current value of LRR1. This function is only available on Itanium processors.
- This function checks the state of the spin lock specified by SpinLock. If
- SpinLock is in the released state, then this function places SpinLock in the
- acquired state and returns TRUE. Otherwise, FALSE is returned. All state
- transitions of SpinLock must be performed using MP safe mechanisms.
+ @return The current value of LRR1.
- If SpinLock is NULL, then ASSERT().
- If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
+**/
+UINT64
+EFIAPI
+AsmReadLrr1 (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Page Local Interrupt ID Register (LID).
+
+ Writes the current value of LID. The 64-bit value written to the LID is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of LID must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- @param SpinLock A pointer to the spin lock to place in the acquired state.
+ @param Value The 64-bit value to write to LID.
- @retval TRUE SpinLock was placed in the acquired state.
- @retval FALSE SpinLock could not be acquired.
+ @return The 64-bit value written to the LID.
**/
-BOOLEAN
+UINT64
EFIAPI
-AcquireSpinLockOrFail (
- IN SPIN_LOCK *SpinLock
+AsmWriteLid (
+ IN UINT64 Value
);
-/**
- Releases a spin lock.
-
- This function places the spin lock specified by SpinLock in the release state
- and returns SpinLock.
- If SpinLock is NULL, then ASSERT().
- If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
+/**
+ Writes the current value of 64-bit Task Priority Register (TPR).
+
+ Writes the current value of TPR. The 64-bit value written to the TPR is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of TPR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- @param SpinLock A pointer to the spin lock to release.
+ @param Value The 64-bit value to write to TPR.
- @return SpinLock
+ @return The 64-bit value written to the TPR.
**/
-SPIN_LOCK *
+UINT64
EFIAPI
-ReleaseSpinLock (
- IN SPIN_LOCK *SpinLock
+AsmWriteTpr (
+ IN UINT64 Value
);
+
/**
- Performs an atomic increment of an 32-bit unsigned integer.
+ Performs a write operation on End OF External Interrupt Register (EOI).
+
+ Writes a value of 0 to the EOI Register. This function is only available on Itanium processors.
+
+**/
+VOID
+EFIAPI
+AsmWriteEoi (
+ VOID
+ );
- Performs an atomic increment of the 32-bit unsigned integer specified by
- Value and returns the incremented value. The increment operation must be
- performed using MP safe mechanisms. The state of the return value is not
- guaranteed to be MP safe.
- If Value is NULL, then ASSERT().
+/**
+ Writes the current value of 64-bit Performance Monitor Vector Register (PMV).
+
+ Writes the current value of PMV. The 64-bit value written to the PMV is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of PMV must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- @param Value A pointer to the 32-bit value to increment.
+ @param Value The 64-bit value to write to PMV.
- @return The incremented value.
+ @return The 64-bit value written to the PMV.
**/
-UINT32
+UINT64
EFIAPI
-InterlockedIncrement (
- IN UINT32 *Value
+AsmWritePmv (
+ IN UINT64 Value
);
-/**
- Performs an atomic decrement of an 32-bit unsigned integer.
-
- Performs an atomic decrement of the 32-bit unsigned integer specified by
- Value and returns the decremented value. The decrement operation must be
- performed using MP safe mechanisms. The state of the return value is not
- guaranteed to be MP safe.
- If Value is NULL, then ASSERT().
+/**
+ Writes the current value of 64-bit Corrected Machine Check Vector Register (CMCV).
+
+ Writes the current value of CMCV. The 64-bit value written to the CMCV is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of CMCV must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- @param Value A pointer to the 32-bit value to decrement.
+ @param Value The 64-bit value to write to CMCV.
- @return The decremented value.
+ @return The 64-bit value written to the CMCV.
**/
-UINT32
+UINT64
EFIAPI
-InterlockedDecrement (
- IN UINT32 *Value
+AsmWriteCmcv (
+ IN UINT64 Value
);
+
/**
- Performs an atomic compare exchange operation on a 32-bit unsigned integer.
+ Writes the current value of 64-bit Local Redirection Register #0 (LRR0).
+
+ Writes the current value of LRR0. The 64-bit value written to the LRR0 is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of LRR0 must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- @param Value A pointer to the 32-bit value for the compare exchange
- operation.
- @param CompareValue 32-bit value used in compare operation.
- @param ExchangeValue 32-bit value used in exchange operation.
+ @param Value The 64-bit value to write to LRR0.
- @return The original *Value before exchange.
+ @return The 64-bit value written to the LRR0.
**/
-UINT32
+UINT64
EFIAPI
-InterlockedCompareExchange32 (
- IN OUT UINT32 *Value,
- IN UINT32 CompareValue,
- IN UINT32 ExchangeValue
+AsmWriteLrr0 (
+ IN UINT64 Value
);
+
/**
- Performs an atomic compare exchange operation on a 64-bit unsigned integer.
+ Writes the current value of 64-bit Local Redirection Register #1 (LRR1).
+
+ Writes the current value of LRR1. The 64-bit value written to the LRR1 is returned.
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of LRR1 must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must
+ set up fault handlers to catch the faults.
+ This function is only available on Itanium processors.
- @param Value A pointer to the 64-bit value for the compare exchange
- operation.
- @param CompareValue 64-bit value used in compare operation.
- @param ExchangeValue 64-bit value used in exchange operation.
+ @param Value The 64-bit value to write to LRR1.
- @return The original *Value before exchange.
+ @return The 64-bit value written to the LRR1.
**/
UINT64
EFIAPI
-InterlockedCompareExchange64 (
- IN OUT UINT64 *Value,
- IN UINT64 CompareValue,
- IN UINT64 ExchangeValue
+AsmWriteLrr1 (
+ IN UINT64 Value
);
-/**
- Performs an atomic compare exchange operation on a pointer value.
- Performs an atomic compare exchange operation on the pointer value specified
- by Value. If Value is equal to CompareValue, then Value is set to
- ExchangeValue and CompareValue is returned. If Value is not equal to
- CompareValue, then Value is returned. The compare exchange operation must be
- performed using MP safe mechanisms.
+/**
+ Reads the current value of Instruction Breakpoint Register (IBR).
+
+ The Instruction Breakpoint Registers are used in pairs. The even numbered
+ registers contain breakpoint addresses, and the odd numbered registers contain
+ breakpoint mask conditions. At least four instruction registers pairs are implemented
+ on all processor models. Implemented registers are contiguous starting with
+ register 0. No parameter checking is performed on Index, and if the Index value
+ is beyond the implemented IBR 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 Itanium processors.
- If Value is NULL, then ASSERT().
+ @param Index The 8-bit Instruction Breakpoint Register index to read.
- @param Value A pointer to the pointer value for the compare exchange
- operation.
- @param CompareValue Pointer value used in compare operation.
- @param ExchangeValue Pointer value used in exchange operation.
+ @return The current value of Instruction Breakpoint Register specified by Index.
**/
-VOID *
+UINT64
EFIAPI
-InterlockedCompareExchangePointer (
- IN OUT VOID **Value,
- IN VOID *CompareValue,
- IN VOID *ExchangeValue
+AsmReadIbr (
+ IN UINT8 Index
);
-//
-// Base Library CPU Functions
-//
-typedef
-VOID
-(EFIAPI *SWITCH_STACK_ENTRY_POINT) (
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2 OPTIONAL
- );
/**
- Used to serialize load and store operations.
+ Reads the current value of Data Breakpoint Register (DBR).
- All loads and stores that proceed calls to this function are guaranteed to be
- globally visible when this function returns.
+ The Data Breakpoint Registers are used in pairs. The even numbered registers
+ contain breakpoint addresses, and odd numbered registers contain breakpoint
+ mask conditions. At least four data registers pairs are implemented on all processor
+ models. Implemented registers are contiguous starting with register 0.
+ No parameter checking is performed on Index. If the Index value is beyond
+ the implemented DBR 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 Itanium processors.
+
+ @param Index The 8-bit Data Breakpoint Register index to read.
+
+ @return The current value of Data Breakpoint Register specified by Index.
**/
-VOID
+UINT64
EFIAPI
-MemoryFence (
- VOID
+AsmReadDbr (
+ IN UINT8 Index
);
-/**
- Saves the current CPU context that can be restored with a call to LongJump()
- and returns 0.
- Saves the current CPU context in the buffer specified by JumpBuffer and
- returns 0. The initial call to SetJump() must always return 0. Subsequent
- calls to LongJump() cause a non-zero value to be returned by SetJump().
+/**
+ Reads the current value of Performance Monitor Configuration Register (PMC).
- If JumpBuffer is NULL, then ASSERT().
+ All processor implementations provide at least four performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and four performance monitor counter overflow
+ status registers (PMC [0]... PMC [3]). Processor implementations may provide
+ additional implementation-dependent PMC and PMD to increase the number of
+ 'generic' performance counters (PMC/PMD pairs). The remainder of PMC and PMD
+ register set is implementation dependent. No parameter checking is performed
+ on Index. If the Index value is beyond the implemented PMC register range,
+ zero value will be returned.
+ This function is only available on Itanium processors.
- @param JumpBuffer A pointer to CPU context buffer.
+ @param Index The 8-bit Performance Monitor Configuration Register index to read.
- @retval 0 Indicates a return from SetJump().
+ @return The current value of Performance Monitor Configuration Register
+ specified by Index.
**/
-UINTN
+UINT64
EFIAPI
-SetJump (
- OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
+AsmReadPmc (
+ IN UINT8 Index
);
+
/**
- Restores the CPU context that was saved with SetJump().
+ Reads the current value of Performance Monitor Data Register (PMD).
- Restores the CPU context from the buffer specified by JumpBuffer. This
- function never returns to the caller. Instead is resumes execution based on
- the state of JumpBuffer.
+ All processor implementations provide at least 4 performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter
+ overflow status registers (PMC [0]... PMC [3]). Processor implementations may
+ provide additional implementation-dependent PMC and PMD to increase the number
+ of 'generic' performance counters (PMC/PMD pairs). The remainder of PMC and PMD
+ register set is implementation dependent. No parameter checking is performed
+ on Index. If the Index value is beyond the implemented PMD register range,
+ zero value will be returned.
+ This function is only available on Itanium processors.
- If JumpBuffer is NULL, then ASSERT().
- If Value is 0, then ASSERT().
+ @param Index The 8-bit Performance Monitor Data Register index to read.
- @param JumpBuffer A pointer to CPU context buffer.
- @param Value The value to return when the SetJump() context is
- restored and must be non-zero.
+ @return The current value of Performance Monitor Data Register specified by Index.
**/
-VOID
+UINT64
EFIAPI
-LongJump (
- IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer,
- IN UINTN Value
+AsmReadPmd (
+ IN UINT8 Index
);
+
/**
- Enables CPU interrupts.
+ Writes the current value of 64-bit Instruction Breakpoint Register (IBR).
- Enables CPU interrupts.
+ Writes current value of Instruction Breakpoint Register specified by Index.
+ The Instruction Breakpoint Registers are used in pairs. The even numbered
+ registers contain breakpoint addresses, and odd numbered registers contain
+ breakpoint mask conditions. At least four instruction registers pairs are implemented
+ on all processor models. Implemented registers are contiguous starting with
+ register 0. No parameter checking is performed on Index. If the Index value
+ is beyond the implemented IBR 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 Itanium processors.
+
+ @param Index The 8-bit Instruction Breakpoint Register index to write.
+ @param Value The 64-bit value to write to IBR.
+
+ @return The 64-bit value written to the IBR.
**/
-VOID
+UINT64
EFIAPI
-EnableInterrupts (
- VOID
+AsmWriteIbr (
+ IN UINT8 Index,
+ IN UINT64 Value
);
+
/**
- Disables CPU interrupts.
+ Writes the current value of 64-bit Data Breakpoint Register (DBR).
- Disables CPU interrupts.
+ Writes current value of Data Breakpoint Register specified by Index.
+ The Data Breakpoint Registers are used in pairs. The even numbered registers
+ contain breakpoint addresses, and odd numbered registers contain breakpoint
+ mask conditions. At least four data registers pairs are implemented on all processor
+ models. Implemented registers are contiguous starting with register 0. No parameter
+ checking is performed on Index. If the Index value is beyond the implemented
+ DBR 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 Itanium processors.
+
+ @param Index The 8-bit Data Breakpoint Register index to write.
+ @param Value The 64-bit value to write to DBR.
+
+ @return The 64-bit value written to the DBR.
**/
-VOID
+UINT64
EFIAPI
-DisableInterrupts (
- VOID
+AsmWriteDbr (
+ IN UINT8 Index,
+ IN UINT64 Value
);
+
/**
- Disables CPU interrupts and returns the interrupt state prior to the disable
- operation.
+ Writes the current value of 64-bit Performance Monitor Configuration Register (PMC).
- Disables CPU interrupts and returns the interrupt state prior to the disable
- operation.
+ Writes current value of Performance Monitor Configuration Register specified by Index.
+ All processor implementations provide at least four performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and four performance monitor counter overflow status
+ registers (PMC [0]... PMC [3]). Processor implementations may provide additional
+ implementation-dependent PMC and PMD to increase the number of 'generic' performance
+ counters (PMC/PMD pairs). The remainder of PMC and PMD register set is implementation
+ dependent. No parameter checking is performed on Index. If the Index value is
+ beyond the implemented PMC register range, the write is ignored.
+ This function is only available on Itanium processors.
- @retval TRUE CPU interrupts were enabled on entry to this call.
- @retval FALSE CPU interrupts were disabled on entry to this call.
+ @param Index The 8-bit Performance Monitor Configuration Register index to write.
+ @param Value The 64-bit value to write to PMC.
+
+ @return The 64-bit value written to the PMC.
**/
-BOOLEAN
+UINT64
EFIAPI
-SaveAndDisableInterrupts (
- VOID
+AsmWritePmc (
+ IN UINT8 Index,
+ IN UINT64 Value
);
+
/**
- Enables CPU interrupts for the smallest window required to capture any
- pending interrupts.
+ Writes the current value of 64-bit Performance Monitor Data Register (PMD).
- Enables CPU interrupts for the smallest window required to capture any
- pending interrupts.
+ Writes current value of Performance Monitor Data Register specified by Index.
+ All processor implementations provide at least four performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and four performance monitor counter overflow
+ status registers (PMC [0]... PMC [3]). Processor implementations may provide
+ additional implementation-dependent PMC and PMD to increase the number of 'generic'
+ performance counters (PMC/PMD pairs). The remainder of PMC and PMD register set
+ is implementation dependent. No parameter checking is performed on Index. If the
+ Index value is beyond the implemented PMD register range, the write is ignored.
+ This function is only available on Itanium processors.
+
+ @param Index The 8-bit Performance Monitor Data Register index to write.
+ @param Value The 64-bit value to write to PMD.
+
+ @return The 64-bit value written to the PMD.
**/
-VOID
+UINT64
EFIAPI
-EnableDisableInterrupts (
- VOID
+AsmWritePmd (
+ IN UINT8 Index,
+ IN UINT64 Value
);
+
/**
- Retrieves the current CPU interrupt state.
+ Reads the current value of 64-bit Global Pointer (GP).
- Retrieves the current CPU interrupt state. Returns TRUE is interrupts are
- currently enabled. Otherwise returns FALSE.
+ Reads and returns the current value of GP.
+ This function is only available on Itanium processors.
- @retval TRUE CPU interrupts are enabled.
- @retval FALSE CPU interrupts are disabled.
+ @return The current value of GP.
**/
-BOOLEAN
+UINT64
EFIAPI
-GetInterruptState (
+AsmReadGp (
VOID
);
+
/**
- Set the current CPU interrupt state.
+ Write the current value of 64-bit Global Pointer (GP).
- Sets the current CPU interrupt state to the state specified by
- InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
- InterruptState is FALSE, then interrupts are disabled. InterruptState is
- returned.
+ Writes the current value of GP. The 64-bit value written to the GP is returned.
+ No parameter checking is performed on Value.
+ This function is only available on Itanium processors.
- @param InterruptState TRUE if interrupts should enabled. FALSE if
- interrupts should be disabled.
+ @param Value The 64-bit value to write to GP.
- @return InterruptState
+ @return The 64-bit value written to the GP.
**/
-BOOLEAN
+UINT64
EFIAPI
-SetInterruptState (
- IN BOOLEAN InterruptState
+AsmWriteGp (
+ IN UINT64 Value
);
+
/**
- Places the CPU in a sleep state until an interrupt is received.
+ Reads the current value of 64-bit Stack Pointer (SP).
- Places the CPU in a sleep state until an interrupt is received. If interrupts
- are disabled prior to calling this function, then the CPU will be placed in a
- sleep state indefinitely.
+ Reads and returns the current value of SP.
+ This function is only available on Itanium processors.
+
+ @return The current value of SP.
**/
-VOID
+UINT64
EFIAPI
-CpuSleep (
+AsmReadSp (
VOID
);
-/**
- Requests CPU to pause for a short period of time.
- Requests CPU to pause for a short period of time. Typically used in MP
- systems to prevent memory starvation while waiting for a spin lock.
+///
+/// Valid Index value for AsmReadControlRegister().
+///
+#define IPF_CONTROL_REGISTER_DCR 0
+#define IPF_CONTROL_REGISTER_ITM 1
+#define IPF_CONTROL_REGISTER_IVA 2
+#define IPF_CONTROL_REGISTER_PTA 8
+#define IPF_CONTROL_REGISTER_IPSR 16
+#define IPF_CONTROL_REGISTER_ISR 17
+#define IPF_CONTROL_REGISTER_IIP 19
+#define IPF_CONTROL_REGISTER_IFA 20
+#define IPF_CONTROL_REGISTER_ITIR 21
+#define IPF_CONTROL_REGISTER_IIPA 22
+#define IPF_CONTROL_REGISTER_IFS 23
+#define IPF_CONTROL_REGISTER_IIM 24
+#define IPF_CONTROL_REGISTER_IHA 25
+#define IPF_CONTROL_REGISTER_LID 64
+#define IPF_CONTROL_REGISTER_IVR 65
+#define IPF_CONTROL_REGISTER_TPR 66
+#define IPF_CONTROL_REGISTER_EOI 67
+#define IPF_CONTROL_REGISTER_IRR0 68
+#define IPF_CONTROL_REGISTER_IRR1 69
+#define IPF_CONTROL_REGISTER_IRR2 70
+#define IPF_CONTROL_REGISTER_IRR3 71
+#define IPF_CONTROL_REGISTER_ITV 72
+#define IPF_CONTROL_REGISTER_PMV 73
+#define IPF_CONTROL_REGISTER_CMCV 74
+#define IPF_CONTROL_REGISTER_LRR0 80
+#define IPF_CONTROL_REGISTER_LRR1 81
+
+/**
+ Reads a 64-bit control register.
+
+ Reads and returns the control register specified by Index. The valid Index valued
+ are defined above in "Related Definitions".
+ If Index is invalid then 0xFFFFFFFFFFFFFFFF is returned. This function is only
+ available on Itanium processors.
+
+ @param Index The index of the control register to read.
+
+ @return The control register specified by Index.
**/
-VOID
+UINT64
EFIAPI
-CpuPause (
- VOID
+AsmReadControlRegister (
+ IN UINT64 Index
+ );
+
+
+///
+/// Valid Index value for AsmReadApplicationRegister().
+///
+#define IPF_APPLICATION_REGISTER_K0 0
+#define IPF_APPLICATION_REGISTER_K1 1
+#define IPF_APPLICATION_REGISTER_K2 2
+#define IPF_APPLICATION_REGISTER_K3 3
+#define IPF_APPLICATION_REGISTER_K4 4
+#define IPF_APPLICATION_REGISTER_K5 5
+#define IPF_APPLICATION_REGISTER_K6 6
+#define IPF_APPLICATION_REGISTER_K7 7
+#define IPF_APPLICATION_REGISTER_RSC 16
+#define IPF_APPLICATION_REGISTER_BSP 17
+#define IPF_APPLICATION_REGISTER_BSPSTORE 18
+#define IPF_APPLICATION_REGISTER_RNAT 19
+#define IPF_APPLICATION_REGISTER_FCR 21
+#define IPF_APPLICATION_REGISTER_EFLAG 24
+#define IPF_APPLICATION_REGISTER_CSD 25
+#define IPF_APPLICATION_REGISTER_SSD 26
+#define IPF_APPLICATION_REGISTER_CFLG 27
+#define IPF_APPLICATION_REGISTER_FSR 28
+#define IPF_APPLICATION_REGISTER_FIR 29
+#define IPF_APPLICATION_REGISTER_FDR 30
+#define IPF_APPLICATION_REGISTER_CCV 32
+#define IPF_APPLICATION_REGISTER_UNAT 36
+#define IPF_APPLICATION_REGISTER_FPSR 40
+#define IPF_APPLICATION_REGISTER_ITC 44
+#define IPF_APPLICATION_REGISTER_PFS 64
+#define IPF_APPLICATION_REGISTER_LC 65
+#define IPF_APPLICATION_REGISTER_EC 66
+
+/**
+ Reads a 64-bit application register.
+
+ Reads and returns the application register specified by Index. The valid Index
+ valued are defined above in "Related Definitions".
+ If Index is invalid then 0xFFFFFFFFFFFFFFFF is returned. This function is only
+ available on Itanium processors.
+
+ @param Index The index of the application register to read.
+
+ @return The application register specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadApplicationRegister (
+ IN UINT64 Index
);
+
/**
- Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
+ 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 Itanium processors.
+
+ @param Index The 8-bit Machine Specific Register index to read.
- Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
+ @return The current value of the Machine Specific Register specified by Index.
**/
-VOID
+UINT64
EFIAPI
-CpuFlushTlb (
- VOID
+AsmReadMsr (
+ IN UINT8 Index
);
+
/**
- Transfers control to a function starting with a new stack.
+ Writes the current value of a Machine Specific Register (MSR).
- Transfers control to the function specified by EntryPoint using the new stack
- specified by NewStack and passing in the parameters specified by Context1 and
- Context2. Context1 and Context2 are optional and may be NULL. The function
- EntryPoint must never return.
+ 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 Itanium processors.
- If EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
+ @param Index The 8-bit Machine Specific Register index to write.
+ @param Value The 64-bit value to write to the Machine Specific Register.
- @param EntryPoint A pointer to function to call with the new stack.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function.
+ @return The 64-bit value to write to the Machine Specific Register.
**/
-VOID
+UINT64
EFIAPI
-SwitchStack (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack
+AsmWriteMsr (
+ IN UINT8 Index,
+ IN UINT64 Value
);
+
/**
- Generates a breakpoint on the CPU.
+ Determines if the CPU is currently executing in virtual, physical, or mixed mode.
- Generates a breakpoint on the CPU. The breakpoint must be implemented such
- that code can resume normal execution after the breakpoint.
+ Determines the current execution mode of the CPU.
+ If the CPU is in virtual mode(PSR.RT=1, PSR.DT=1, PSR.IT=1), then 1 is returned.
+ If the CPU is in physical mode(PSR.RT=0, PSR.DT=0, PSR.IT=0), then 0 is returned.
+ If the CPU is not in physical mode or virtual mode, then it is in mixed mode,
+ and -1 is returned.
+ This function is only available on Itanium processors.
+
+ @retval 1 The CPU is in virtual mode.
+ @retval 0 The CPU is in physical mode.
+ @retval -1 The CPU is in mixed mode.
**/
-VOID
+INT64
EFIAPI
-CpuBreakpoint (
+AsmCpuVirtual (
VOID
);
+
/**
- Executes an infinite loop.
+ Makes a PAL procedure call.
- Forces the CPU to execute an infinite loop. A debugger may be used to skip
- past the loop and the code that follows the loop must execute properly. This
- implies that the infinite loop must not cause the code that follow it to be
- optimized away.
+ This is a wrapper function to make a PAL procedure call. Based on the Index
+ value this API will make static or stacked PAL call. The following table
+ describes the usage of PAL Procedure Index Assignment. Architected procedures
+ may be designated as required or optional. If a PAL procedure is specified
+ as optional, a unique return code of 0xFFFFFFFFFFFFFFFF is returned in the
+ Status field of the PAL_CALL_RETURN structure.
+ This indicates that the procedure is not present in this PAL implementation.
+ It is the caller's responsibility to check for this return code after calling
+ any optional PAL procedure.
+ No parameter checking is performed on the 5 input parameters, but there are
+ some common rules that the caller should follow when making a PAL call. Any
+ address passed to PAL as buffers for return parameters must be 8-byte aligned.
+ Unaligned addresses may cause undefined results. For those parameters defined
+ as reserved or some fields defined as reserved must be zero filled or the invalid
+ argument return value may be returned or undefined result may occur during the
+ execution of the procedure. If the PalEntryPoint does not point to a valid
+ PAL entry point then the system behavior is undefined. This function is only
+ available on Itanium processors.
+
+ @param PalEntryPoint The PAL procedure calls entry point.
+ @param Index The PAL procedure Index number.
+ @param Arg2 The 2nd parameter for PAL procedure calls.
+ @param Arg3 The 3rd parameter for PAL procedure calls.
+ @param Arg4 The 4th parameter for PAL procedure calls.
+
+ @return structure returned from the PAL Call procedure, including the status and return value.
**/
-VOID
+PAL_CALL_RETURN
EFIAPI
-CpuDeadLoop (
- VOID
+AsmPalCall (
+ IN UINT64 PalEntryPoint,
+ IN UINT64 Index,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4
);
+#endif
-//
-// IA32 and X64 Specific Functions
-//
-//
-// Byte packed structure for 16-bit Real Mode EFLAGS
-//
+#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
+///
+/// IA32 and x64 Specific Functions.
+/// Byte packed structure for 16-bit Real Mode EFLAGS.
+///
typedef union {
struct {
- UINT32 CF:1; // Carry Flag
- UINT32 Reserved_0:1; // Reserved
- UINT32 PF:1; // Parity Flag
- UINT32 Reserved_1:1; // Reserved
- UINT32 AF:1; // Auxiliary Carry Flag
- UINT32 Reserved_2:1; // Reserved
- UINT32 ZF:1; // Zero Flag
- UINT32 SF:1; // Sign Flag
- UINT32 TF:1; // Trap Flag
- UINT32 IF:1; // Interrupt Enable Flag
- UINT32 DF:1; // Direction Flag
- UINT32 OF:1; // Overflow Flag
- UINT32 IOPL:2; // I/O Privilege Level
- UINT32 NT:1; // Nested Task
- UINT32 Reserved_3:1; // Reserved
+ UINT32 CF:1; ///< Carry Flag.
+ UINT32 Reserved_0:1; ///< Reserved.
+ UINT32 PF:1; ///< Parity Flag.
+ UINT32 Reserved_1:1; ///< Reserved.
+ UINT32 AF:1; ///< Auxiliary Carry Flag.
+ UINT32 Reserved_2:1; ///< Reserved.
+ UINT32 ZF:1; ///< Zero Flag.
+ UINT32 SF:1; ///< Sign Flag.
+ UINT32 TF:1; ///< Trap Flag.
+ UINT32 IF:1; ///< Interrupt Enable Flag.
+ UINT32 DF:1; ///< Direction Flag.
+ UINT32 OF:1; ///< Overflow Flag.
+ UINT32 IOPL:2; ///< I/O Privilege Level.
+ UINT32 NT:1; ///< Nested Task.
+ UINT32 Reserved_3:1; ///< Reserved.
} Bits;
UINT16 Uint16;
} IA32_FLAGS16;
-//
-// Byte packed structure for EFLAGS/RFLAGS
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
+///
+/// Byte packed structure for EFLAGS/RFLAGS.
+/// 32-bits on IA-32.
+/// 64-bits on x64. The upper 32-bits on x64 are reserved.
+///
typedef union {
struct {
- UINT32 CF:1; // Carry Flag
- UINT32 Reserved_0:1; // Reserved
- UINT32 PF:1; // Parity Flag
- UINT32 Reserved_1:1; // Reserved
- UINT32 AF:1; // Auxiliary Carry Flag
- UINT32 Reserved_2:1; // Reserved
- UINT32 ZF:1; // Zero Flag
- UINT32 SF:1; // Sign Flag
- UINT32 TF:1; // Trap Flag
- UINT32 IF:1; // Interrupt Enable Flag
- UINT32 DF:1; // Direction Flag
- UINT32 OF:1; // Overflow Flag
- UINT32 IOPL:2; // I/O Privilege Level
- UINT32 NT:1; // Nested Task
- UINT32 Reserved_3:1; // Reserved
- UINT32 RF:1; // Resume Flag
- UINT32 VM:1; // Virtual 8086 Mode
- UINT32 AC:1; // Alignment Check
- UINT32 VIF:1; // Virtual Interrupt Flag
- UINT32 VIP:1; // Virtual Interrupt Pending
- UINT32 ID:1; // ID Flag
- UINT32 Reserved_4:10; // Reserved
+ UINT32 CF:1; ///< Carry Flag.
+ UINT32 Reserved_0:1; ///< Reserved.
+ UINT32 PF:1; ///< Parity Flag.
+ UINT32 Reserved_1:1; ///< Reserved.
+ UINT32 AF:1; ///< Auxiliary Carry Flag.
+ UINT32 Reserved_2:1; ///< Reserved.
+ UINT32 ZF:1; ///< Zero Flag.
+ UINT32 SF:1; ///< Sign Flag.
+ UINT32 TF:1; ///< Trap Flag.
+ UINT32 IF:1; ///< Interrupt Enable Flag.
+ UINT32 DF:1; ///< Direction Flag.
+ UINT32 OF:1; ///< Overflow Flag.
+ UINT32 IOPL:2; ///< I/O Privilege Level.
+ UINT32 NT:1; ///< Nested Task.
+ UINT32 Reserved_3:1; ///< Reserved.
+ UINT32 RF:1; ///< Resume Flag.
+ UINT32 VM:1; ///< Virtual 8086 Mode.
+ UINT32 AC:1; ///< Alignment Check.
+ UINT32 VIF:1; ///< Virtual Interrupt Flag.
+ UINT32 VIP:1; ///< Virtual Interrupt Pending.
+ UINT32 ID:1; ///< ID Flag.
+ UINT32 Reserved_4:10; ///< Reserved.
} Bits;
UINTN UintN;
} IA32_EFLAGS32;
-//
-// Byte packed structure for Control Register 0 (CR0)
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
+///
+/// Byte packed structure for Control Register 0 (CR0).
+/// 32-bits on IA-32.
+/// 64-bits on x64. The upper 32-bits on x64 are reserved.
+///
typedef union {
struct {
- UINT32 PE:1; // Protection Enable
- UINT32 MP:1; // Monitor Coprocessor
- UINT32 EM:1; // Emulation
- UINT32 TS:1; // Task Switched
- UINT32 ET:1; // Extension Type
- UINT32 NE:1; // Numeric Error
- UINT32 Reserved_0:10; // Reserved
- UINT32 WP:1; // Write Protect
- UINT32 Reserved_1:1; // Reserved
- UINT32 AM:1; // Alignment Mask
- UINT32 Reserved_2:10; // Reserved
- UINT32 NW:1; // Mot Write-through
- UINT32 CD:1; // Cache Disable
- UINT32 PG:1; // Paging
+ UINT32 PE:1; ///< Protection Enable.
+ UINT32 MP:1; ///< Monitor Coprocessor.
+ UINT32 EM:1; ///< Emulation.
+ UINT32 TS:1; ///< Task Switched.
+ UINT32 ET:1; ///< Extension Type.
+ UINT32 NE:1; ///< Numeric Error.
+ UINT32 Reserved_0:10; ///< Reserved.
+ UINT32 WP:1; ///< Write Protect.
+ UINT32 Reserved_1:1; ///< Reserved.
+ UINT32 AM:1; ///< Alignment Mask.
+ UINT32 Reserved_2:10; ///< Reserved.
+ UINT32 NW:1; ///< Mot Write-through.
+ UINT32 CD:1; ///< Cache Disable.
+ UINT32 PG:1; ///< Paging.
} Bits;
UINTN UintN;
} IA32_CR0;
-//
-// Byte packed structure for Control Register 4 (CR4)
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
+///
+/// Byte packed structure for Control Register 4 (CR4).
+/// 32-bits on IA-32.
+/// 64-bits on x64. The upper 32-bits on x64 are reserved.
+///
typedef union {
struct {
- UINT32 VME:1; // Virtual-8086 Mode Extensions
- UINT32 PVI:1; // Protected-Mode Virtual Interrupts
- UINT32 TSD:1; // Time Stamp Disable
- UINT32 DE:1; // Debugging Extensions
- UINT32 PSE:1; // Page Size Extensions
- UINT32 PAE:1; // Physical Address Extension
- UINT32 MCE:1; // Machine Check Enable
- UINT32 PGE:1; // Page Global Enable
- UINT32 PCE:1; // Performance Monitoring Counter
- // Enable
- UINT32 OSFXSR:1; // Operating System Support for
- // FXSAVE and FXRSTOR instructions
- UINT32 OSXMMEXCPT:1; // Operating System Support for
- // Unmasked SIMD Floating Point
- // Exceptions
- UINT32 Reserved_0:2; // Reserved
- UINT32 VMXE:1; // VMX Enable
- UINT32 Reserved_1:18; // Reseved
+ UINT32 VME:1; ///< Virtual-8086 Mode Extensions.
+ UINT32 PVI:1; ///< Protected-Mode Virtual Interrupts.
+ UINT32 TSD:1; ///< Time Stamp Disable.
+ UINT32 DE:1; ///< Debugging Extensions.
+ UINT32 PSE:1; ///< Page Size Extensions.
+ UINT32 PAE:1; ///< Physical Address Extension.
+ UINT32 MCE:1; ///< Machine Check Enable.
+ UINT32 PGE:1; ///< Page Global Enable.
+ UINT32 PCE:1; ///< Performance Monitoring Counter
+ ///< Enable.
+ UINT32 OSFXSR:1; ///< Operating System Support for
+ ///< FXSAVE and FXRSTOR instructions
+ UINT32 OSXMMEXCPT:1; ///< Operating System Support for
+ ///< Unmasked SIMD Floating Point
+ ///< Exceptions.
+ UINT32 Reserved_0:2; ///< Reserved.
+ UINT32 VMXE:1; ///< VMX Enable
+ UINT32 Reserved_1:18; ///< Reserved.
} Bits;
UINTN UintN;
} IA32_CR4;
-//
-// Byte packed structure for an IDTR, GDTR, LDTR descriptor
-/// @bug How to make this structure byte-packed in a compiler independent way?
-//
+///
+/// Byte packed structure for a segment descriptor in a GDT/LDT.
+///
+typedef union {
+ struct {
+ UINT32 LimitLow:16;
+ UINT32 BaseLow:16;
+ UINT32 BaseMid:8;
+ UINT32 Type:4;
+ UINT32 S:1;
+ UINT32 DPL:2;
+ UINT32 P:1;
+ UINT32 LimitHigh:4;
+ UINT32 AVL:1;
+ UINT32 L:1;
+ UINT32 DB:1;
+ UINT32 G:1;
+ UINT32 BaseHigh:8;
+ } Bits;
+ UINT64 Uint64;
+} IA32_SEGMENT_DESCRIPTOR;
+
+///
+/// Byte packed structure for an IDTR, GDTR, LDTR descriptor.
+///
+#pragma pack (1)
typedef struct {
UINT16 Limit;
UINTN Base;
} IA32_DESCRIPTOR;
+#pragma pack ()
#define IA32_IDT_GATE_TYPE_TASK 0x85
#define IA32_IDT_GATE_TYPE_INTERRUPT_16 0x86
@@ -2916,30 +5395,56 @@ typedef struct {
#define IA32_IDT_GATE_TYPE_INTERRUPT_32 0x8E
#define IA32_IDT_GATE_TYPE_TRAP_32 0x8F
-//
-// Byte packed structure for an Interrupt Gate Descriptor
-//
+
+#if defined (MDE_CPU_IA32)
+///
+/// Byte packed structure for an IA-32 Interrupt Gate Descriptor.
+///
typedef union {
struct {
- UINT32 OffsetLow:16; // Offset bits 15..0
- UINT32 Selector:16; // Selector
- UINT32 Reserved_0:8; // Reserved
- UINT32 GateType:8; // Gate Type. See #defines above
- UINT32 OffsetHigh:16; // Offset bits 31..16
+ UINT32 OffsetLow:16; ///< Offset bits 15..0.
+ UINT32 Selector:16; ///< Selector.
+ UINT32 Reserved_0:8; ///< Reserved.
+ UINT32 GateType:8; ///< Gate Type. See #defines above.
+ UINT32 OffsetHigh:16; ///< Offset bits 31..16.
} Bits;
UINT64 Uint64;
} IA32_IDT_GATE_DESCRIPTOR;
-//
-// Byte packed structure for an FP/SSE/SSE2 context
-//
+#endif
+
+#if defined (MDE_CPU_X64)
+///
+/// Byte packed structure for an x64 Interrupt Gate Descriptor.
+///
+typedef union {
+ struct {
+ UINT32 OffsetLow:16; ///< Offset bits 15..0.
+ UINT32 Selector:16; ///< Selector.
+ UINT32 Reserved_0:8; ///< Reserved.
+ UINT32 GateType:8; ///< Gate Type. See #defines above.
+ UINT32 OffsetHigh:16; ///< Offset bits 31..16.
+ UINT32 OffsetUpper:32; ///< Offset bits 63..32.
+ UINT32 Reserved_1:32; ///< Reserved.
+ } Bits;
+ struct {
+ UINT64 Uint64;
+ UINT64 Uint64_1;
+ } Uint128;
+} IA32_IDT_GATE_DESCRIPTOR;
+
+#endif
+
+///
+/// Byte packed structure for an FP/SSE/SSE2 context.
+///
typedef struct {
UINT8 Buffer[512];
} IA32_FX_BUFFER;
-//
-// Structures for the 16-bit real mode thunks
-//
+///
+/// Structures for the 16-bit real mode thunks.
+///
typedef struct {
UINT32 Reserved1;
UINT32 Reserved2;
@@ -3003,9 +5508,9 @@ typedef union {
IA32_BYTE_REGS H;
} IA32_REGISTER_SET;
-//
-// Byte packed structure for an 16-bit real mode thunks
-//
+///
+/// Byte packed structure for an 16-bit real mode thunks.
+///
typedef struct {
IA32_REGISTER_SET *RealModeState;
VOID *RealModeBuffer;
@@ -3026,20 +5531,20 @@ typedef struct {
If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
- This function is only available on IA-32 and X64.
+ This function is only available on IA-32 and x64.
@param Index The 32-bit value to load into EAX prior to invoking the CPUID
instruction.
- @param Eax Pointer to the 32-bit EAX value returned by the CPUID
+ @param Eax The pointer to the 32-bit EAX value returned by the CPUID
instruction. This is an optional parameter that may be NULL.
- @param Ebx Pointer to the 32-bit EBX value returned by the CPUID
+ @param Ebx The pointer to the 32-bit EBX value returned by the CPUID
instruction. This is an optional parameter that may be NULL.
- @param Ecx Pointer to the 32-bit ECX value returned by the CPUID
+ @param Ecx The pointer to the 32-bit ECX value returned by the CPUID
instruction. This is an optional parameter that may be NULL.
- @param Edx Pointer to the 32-bit EDX value returned by the CPUID
+ @param Edx The pointer to the 32-bit EDX value returned by the CPUID
instruction. This is an optional parameter that may be NULL.
- @return Index
+ @return Index.
**/
UINT32
@@ -3052,6 +5557,7 @@ AsmCpuid (
OUT UINT32 *Edx OPTIONAL
);
+
/**
Retrieves CPUID information using an extended leaf identifier.
@@ -3068,20 +5574,20 @@ AsmCpuid (
CPUID instruction.
@param SubIndex The 32-bit value to load into ECX prior to invoking the
CPUID instruction.
- @param Eax Pointer to the 32-bit EAX value returned by the CPUID
+ @param Eax The pointer to the 32-bit EAX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
- @param Ebx Pointer to the 32-bit EBX value returned by the CPUID
+ @param Ebx The pointer to the 32-bit EBX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
- @param Ecx Pointer to the 32-bit ECX value returned by the CPUID
+ @param Ecx The pointer to the 32-bit ECX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
- @param Edx Pointer to the 32-bit EDX value returned by the CPUID
+ @param Edx The pointer to the 32-bit EDX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
- @return Index
+ @return Index.
**/
UINT32
@@ -3095,6 +5601,35 @@ AsmCpuidEx (
OUT UINT32 *Edx OPTIONAL
);
+
+/**
+ Set CD bit and clear NW bit of CR0 followed by a WBINVD.
+
+ Disables the caches by setting the CD bit of CR0 to 1, clearing the NW bit of CR0 to 0,
+ and executing a WBINVD instruction. This function is only available on IA-32 and x64.
+
+**/
+VOID
+EFIAPI
+AsmDisableCache (
+ VOID
+ );
+
+
+/**
+ Perform a WBINVD and clear both the CD and NW bits of CR0.
+
+ Enables the caches by executing a WBINVD instruction and then clear both the CD and NW
+ bits of CR0 to 0. This function is only available on IA-32 and x64.
+
+**/
+VOID
+EFIAPI
+AsmEnableCache (
+ VOID
+ );
+
+
/**
Returns the lower 32-bits of a Machine Specific Register(MSR).
@@ -3102,7 +5637,7 @@ AsmCpuidEx (
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.
+ is only available on IA-32 and x64.
@param Index The 32-bit MSR index to read.
@@ -3115,15 +5650,17 @@ AsmReadMsr32 (
IN UINT32 Index
);
+
/**
- Zero-extend a 32-bit value and writes it to a Machine Specific Register(MSR).
+ 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.
+ handlers. This function is only available on IA-32 and x64.
@param Index The 32-bit MSR index to write.
@param Value The 32-bit value to write to the MSR.
@@ -3138,18 +5675,19 @@ AsmWriteMsr32 (
IN UINT32 Value
);
+
/**
- Reads a 64-bit MSR, performs a bitwise inclusive OR on the lower 32-bits, and
+ 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 inclusive OR
+ 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.
+ IA-32 and x64.
@param Index The 32-bit MSR index to write.
@param OrData The value to OR with the read value from the MSR.
@@ -3164,6 +5702,7 @@ AsmMsrOr32 (
IN UINT32 OrData
);
+
/**
Reads a 64-bit MSR, performs a bitwise AND on the lower 32-bits, and writes
the result back to the 64-bit MSR.
@@ -3175,7 +5714,7 @@ AsmMsrOr32 (
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.
+ and x64.
@param Index The 32-bit MSR index to write.
@param AndData The value to AND with the read value from the MSR.
@@ -3190,20 +5729,21 @@ AsmMsrAnd32 (
IN UINT32 AndData
);
+
/**
- Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise inclusive OR
+ 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 inclusive OR between the
+ 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.
+ available on IA-32 and x64.
@param Index The 32-bit MSR index to write.
@param AndData The value to AND with the read value from the MSR.
@@ -3220,6 +5760,7 @@ AsmMsrAndThenOr32 (
IN UINT32 OrData
);
+
/**
Reads a bit field of an MSR.
@@ -3227,7 +5768,7 @@ AsmMsrAndThenOr32 (
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.
+ available on IA-32 and x64.
If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
@@ -3250,20 +5791,21 @@ AsmMsrBitFieldRead32 (
IN UINTN EndBit
);
+
/**
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
+ 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. Extra left bits in Value 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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3284,21 +5826,23 @@ AsmMsrBitFieldWrite32 (
IN UINT32 Value
);
+
/**
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 inclusive OR
+ 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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3319,6 +5863,7 @@ AsmMsrBitFieldOr32 (
IN UINT32 OrData
);
+
/**
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.
@@ -3329,11 +5874,12 @@ AsmMsrBitFieldOr32 (
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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3354,23 +5900,26 @@ AsmMsrBitFieldAnd32 (
IN UINT32 AndData
);
+
/**
Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a
- bitwise inclusive OR, and writes the result back to the bit field in the
+ 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 inclusive OR between the read result and the value specified by
+ 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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3393,6 +5942,7 @@ AsmMsrBitFieldAndThenOr32 (
IN UINT32 OrData
);
+
/**
Returns a 64-bit Machine Specific Register(MSR).
@@ -3400,7 +5950,7 @@ AsmMsrBitFieldAndThenOr32 (
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.
+ on IA-32 and x64.
@param Index The 32-bit MSR index to read.
@@ -3413,6 +5963,7 @@ AsmReadMsr64 (
IN UINT32 Index
);
+
/**
Writes a 64-bit value to a Machine Specific Register(MSR), and returns the
value.
@@ -3422,7 +5973,7 @@ AsmReadMsr64 (
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.
+ IA-32 and x64.
@param Index The 32-bit MSR index to write.
@param Value The 64-bit value to write to the MSR.
@@ -3437,17 +5988,18 @@ AsmWriteMsr64 (
IN UINT64 Value
);
+
/**
- Reads a 64-bit MSR, performs a bitwise inclusive OR, and writes the result
+ 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 inclusive OR
+ 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.
+ This function is only available on IA-32 and x64.
@param Index The 32-bit MSR index to write.
@param OrData The value to OR with the read value from the MSR.
@@ -3462,6 +6014,7 @@ AsmMsrOr64 (
IN UINT64 OrData
);
+
/**
Reads a 64-bit MSR, performs a bitwise AND, and writes the result back to the
64-bit MSR.
@@ -3472,7 +6025,7 @@ AsmMsrOr64 (
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.
+ function is only available on IA-32 and x64.
@param Index The 32-bit MSR index to write.
@param AndData The value to AND with the read value from the MSR.
@@ -3487,19 +6040,20 @@ AsmMsrAnd64 (
IN UINT64 AndData
);
+
/**
- Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise inclusive
+ 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 inclusive OR
+ 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.
+ and x64.
@param Index The 32-bit MSR index to write.
@param AndData The value to AND with the read value from the MSR.
@@ -3516,6 +6070,7 @@ AsmMsrAndThenOr64 (
IN UINT64 OrData
);
+
/**
Reads a bit field of an MSR.
@@ -3523,7 +6078,7 @@ AsmMsrAndThenOr64 (
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.
+ on IA-32 and x64.
If StartBit is greater than 63, then ASSERT().
If EndBit is greater than 63, then ASSERT().
@@ -3546,19 +6101,20 @@ AsmMsrBitFieldRead64 (
IN UINTN EndBit
);
+
/**
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. Extra left bits in Value 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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3579,21 +6135,23 @@ AsmMsrBitFieldWrite64 (
IN UINT64 Value
);
+
/**
- Reads a bit field in a 64-bit MSR, performs a bitwise inclusive OR, and
+ 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 inclusive OR
+ 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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3614,6 +6172,7 @@ AsmMsrBitFieldOr64 (
IN UINT64 OrData
);
+
/**
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.
@@ -3624,11 +6183,12 @@ AsmMsrBitFieldOr64 (
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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3649,22 +6209,25 @@ AsmMsrBitFieldAnd64 (
IN UINT64 AndData
);
+
/**
Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a
- bitwise inclusive OR, and writes the result back to the bit field in the
+ 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 inclusive OR between the read result and the value specified 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.
+ 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().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -3687,14 +6250,15 @@ AsmMsrBitFieldAndThenOr64 (
IN UINT64 OrData
);
+
/**
Reads the current value of the EFLAGS register.
Reads and returns the current value of the EFLAGS register. 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.
+ only available on IA-32 and x64. This returns a 32-bit value on IA-32 and a
+ 64-bit value on x64.
- @return EFLAGS on IA-32 or RFLAGS on X64.
+ @return EFLAGS on IA-32 or RFLAGS on x64.
**/
UINTN
@@ -3703,12 +6267,13 @@ AsmReadEflags (
VOID
);
+
/**
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.
+ 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).
@@ -3719,12 +6284,13 @@ AsmReadCr0 (
VOID
);
+
/**
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.
+ 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).
@@ -3735,12 +6301,13 @@ AsmReadCr2 (
VOID
);
+
/**
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.
+ 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).
@@ -3751,12 +6318,13 @@ AsmReadCr3 (
VOID
);
+
/**
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.
+ 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).
@@ -3767,11 +6335,12 @@ AsmReadCr4 (
VOID
);
+
/**
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.
+ 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.
@@ -3784,11 +6353,12 @@ AsmWriteCr0 (
UINTN 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.
+ 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.
@@ -3801,11 +6371,12 @@ AsmWriteCr2 (
UINTN 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.
+ 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.
@@ -3818,11 +6389,12 @@ AsmWriteCr3 (
UINTN 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.
+ 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.
@@ -3835,12 +6407,13 @@ AsmWriteCr4 (
UINTN 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.
+ 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).
@@ -3851,12 +6424,13 @@ AsmReadDr0 (
VOID
);
+
/**
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.
+ 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).
@@ -3867,12 +6441,13 @@ AsmReadDr1 (
VOID
);
+
/**
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.
+ 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).
@@ -3883,12 +6458,13 @@ AsmReadDr2 (
VOID
);
+
/**
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.
+ 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).
@@ -3899,12 +6475,13 @@ AsmReadDr3 (
VOID
);
+
/**
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.
+ 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).
@@ -3915,12 +6492,13 @@ AsmReadDr4 (
VOID
);
+
/**
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.
+ 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).
@@ -3931,12 +6509,13 @@ AsmReadDr5 (
VOID
);
+
/**
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.
+ 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).
@@ -3947,12 +6526,13 @@ AsmReadDr6 (
VOID
);
+
/**
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.
+ 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).
@@ -3963,11 +6543,12 @@ AsmReadDr7 (
VOID
);
+
/**
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.
+ 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.
@@ -3980,11 +6561,12 @@ AsmWriteDr0 (
UINTN 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.
+ 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.
@@ -3997,11 +6579,12 @@ AsmWriteDr1 (
UINTN 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.
+ 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.
@@ -4014,11 +6597,12 @@ AsmWriteDr2 (
UINTN 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.
+ 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.
@@ -4031,11 +6615,12 @@ AsmWriteDr3 (
UINTN 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.
+ 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.
@@ -4048,11 +6633,12 @@ AsmWriteDr4 (
UINTN 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.
+ 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.
@@ -4065,11 +6651,12 @@ AsmWriteDr5 (
UINTN 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.
+ 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.
@@ -4082,11 +6669,12 @@ AsmWriteDr6 (
UINTN 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.
+ 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.
@@ -4099,11 +6687,12 @@ AsmWriteDr7 (
UINTN 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.
+ IA-32 and x64.
@return The current value of CS.
@@ -4114,11 +6703,12 @@ AsmReadCs (
VOID
);
+
/**
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.
+ IA-32 and x64.
@return The current value of DS.
@@ -4129,11 +6719,12 @@ AsmReadDs (
VOID
);
+
/**
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.
+ IA-32 and x64.
@return The current value of ES.
@@ -4144,11 +6735,12 @@ AsmReadEs (
VOID
);
+
/**
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.
+ IA-32 and x64.
@return The current value of FS.
@@ -4159,11 +6751,12 @@ AsmReadFs (
VOID
);
+
/**
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.
+ IA-32 and x64.
@return The current value of GS.
@@ -4174,11 +6767,12 @@ AsmReadGs (
VOID
);
+
/**
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.
+ IA-32 and x64.
@return The current value of SS.
@@ -4189,11 +6783,12 @@ AsmReadSs (
VOID
);
+
/**
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.
+ IA-32 and x64.
@return The current value of TR.
@@ -4204,15 +6799,16 @@ AsmReadTr (
VOID
);
+
/**
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.
+ function is only available on IA-32 and x64.
If Gdtr is NULL, then ASSERT().
- @param Gdtr Pointer to a GDTR descriptor.
+ @param Gdtr The pointer to a GDTR descriptor.
**/
VOID
@@ -4221,15 +6817,16 @@ AsmReadGdtr (
OUT IA32_DESCRIPTOR *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.
+ only available on IA-32 and x64.
If Gdtr is NULL, then ASSERT().
- @param Gdtr Pointer to a GDTR descriptor.
+ @param Gdtr The pointer to a GDTR descriptor.
**/
VOID
@@ -4238,15 +6835,16 @@ AsmWriteGdtr (
IN CONST IA32_DESCRIPTOR *Gdtr
);
+
/**
- Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.
+ Reads the current Interrupt Descriptor Table Register(IDTR) descriptor.
Reads and returns the current IDTR descriptor and returns it in Idtr. This
- function is only available on IA-32 and X64.
+ function is only available on IA-32 and x64.
If Idtr is NULL, then ASSERT().
- @param Idtr Pointer to a IDTR descriptor.
+ @param Idtr The pointer to a IDTR descriptor.
**/
VOID
@@ -4255,15 +6853,16 @@ AsmReadIdtr (
OUT IA32_DESCRIPTOR *Idtr
);
+
/**
- Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.
+ Writes the current Interrupt Descriptor Table Register(IDTR) descriptor.
Writes the current IDTR descriptor and returns it in Idtr. This function is
- only available on IA-32 and X64.
+ only available on IA-32 and x64.
If Idtr is NULL, then ASSERT().
- @param Idtr Pointer to a IDTR descriptor.
+ @param Idtr The pointer to a IDTR descriptor.
**/
VOID
@@ -4272,11 +6871,12 @@ AsmWriteIdtr (
IN CONST IA32_DESCRIPTOR *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.
+ only available on IA-32 and x64.
@return The current selector of LDT.
@@ -4287,11 +6887,12 @@ AsmReadLdtr (
VOID
);
+
/**
- Writes the current Local Descriptor Table Register (GDTR) selector.
+ Writes the current Local Descriptor Table Register (LDTR) selector.
Writes and the current LDTR descriptor specified by Ldtr. This function is
- only available on IA-32 and X64.
+ only available on IA-32 and x64.
@param Ldtr 16-bit LDTR selector value.
@@ -4302,17 +6903,18 @@ AsmWriteLdtr (
IN UINT16 Ldtr
);
+
/**
Save the current floating point/SSE/SSE2 context to a buffer.
Saves the current floating point/SSE/SSE2 state to the buffer specified by
Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
- available on IA-32 and X64.
+ available on IA-32 and x64.
If Buffer is NULL, then ASSERT().
If Buffer is not aligned on a 16-byte boundary, then ASSERT().
- @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
+ @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context.
**/
VOID
@@ -4321,18 +6923,19 @@ AsmFxSave (
OUT IA32_FX_BUFFER *Buffer
);
+
/**
Restores the current floating point/SSE/SSE2 context from a buffer.
Restores the current floating point/SSE/SSE2 state from the buffer specified
by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
- only available on IA-32 and X64.
+ only available on IA-32 and x64.
If Buffer is NULL, then ASSERT().
If Buffer is not aligned on a 16-byte boundary, then ASSERT().
If Buffer was not saved with AsmFxSave(), then ASSERT().
- @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
+ @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context.
**/
VOID
@@ -4341,11 +6944,12 @@ AsmFxRestore (
IN CONST IA32_FX_BUFFER *Buffer
);
+
/**
Reads the current value of 64-bit MMX Register #0 (MM0).
Reads and returns the current value of MM0. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM0.
@@ -4356,11 +6960,12 @@ AsmReadMm0 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #1 (MM1).
Reads and returns the current value of MM1. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM1.
@@ -4371,11 +6976,12 @@ AsmReadMm1 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #2 (MM2).
Reads and returns the current value of MM2. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM2.
@@ -4386,11 +6992,12 @@ AsmReadMm2 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #3 (MM3).
Reads and returns the current value of MM3. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM3.
@@ -4401,11 +7008,12 @@ AsmReadMm3 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #4 (MM4).
Reads and returns the current value of MM4. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM4.
@@ -4416,11 +7024,12 @@ AsmReadMm4 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #5 (MM5).
Reads and returns the current value of MM5. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM5.
@@ -4431,11 +7040,12 @@ AsmReadMm5 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #6 (MM6).
Reads and returns the current value of MM6. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM6.
@@ -4446,11 +7056,12 @@ AsmReadMm6 (
VOID
);
+
/**
Reads the current value of 64-bit MMX Register #7 (MM7).
Reads and returns the current value of MM7. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of MM7.
@@ -4461,11 +7072,12 @@ AsmReadMm7 (
VOID
);
+
/**
Writes the current value of 64-bit MMX Register #0 (MM0).
Writes the current value of MM0. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM0.
@@ -4476,11 +7088,12 @@ AsmWriteMm0 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #1 (MM1).
Writes the current value of MM1. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM1.
@@ -4491,11 +7104,12 @@ AsmWriteMm1 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #2 (MM2).
Writes the current value of MM2. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM2.
@@ -4506,11 +7120,12 @@ AsmWriteMm2 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #3 (MM3).
Writes the current value of MM3. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM3.
@@ -4521,11 +7136,12 @@ AsmWriteMm3 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #4 (MM4).
Writes the current value of MM4. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM4.
@@ -4536,11 +7152,12 @@ AsmWriteMm4 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #5 (MM5).
Writes the current value of MM5. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM5.
@@ -4551,11 +7168,12 @@ AsmWriteMm5 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #6 (MM6).
Writes the current value of MM6. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM6.
@@ -4566,11 +7184,12 @@ AsmWriteMm6 (
IN UINT64 Value
);
+
/**
Writes the current value of 64-bit MMX Register #7 (MM7).
Writes the current value of MM7. This function is only available on IA32 and
- X64.
+ x64.
@param Value The 64-bit value to write to MM7.
@@ -4581,11 +7200,12 @@ AsmWriteMm7 (
IN UINT64 Value
);
+
/**
Reads the current value of Time Stamp Counter (TSC).
Reads and returns the current value of TSC. This function is only available
- on IA-32 and X64.
+ on IA-32 and x64.
@return The current value of TSC
@@ -4596,11 +7216,12 @@ AsmReadTsc (
VOID
);
+
/**
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.
+ Index. This function is only available on IA-32 and x64.
@param Index The 32-bit Performance Counter index to read.
@@ -4613,11 +7234,12 @@ AsmReadPmc (
IN UINT32 Index
);
+
/**
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.
+ 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.
@@ -4637,11 +7259,12 @@ AsmMonitor (
IN UINTN Edx
);
+
/**
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.
+ 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.
@@ -4658,11 +7281,12 @@ AsmMwait (
IN UINTN Ecx
);
+
/**
Executes a WBINVD instruction.
Executes a WBINVD instruction. This function is only available on IA-32 and
- X64.
+ x64.
**/
VOID
@@ -4671,11 +7295,12 @@ AsmWbinvd (
VOID
);
+
/**
Executes a INVD instruction.
Executes a INVD instruction. This function is only available on IA-32 and
- X64.
+ x64.
**/
VOID
@@ -4684,12 +7309,13 @@ AsmInvd (
VOID
);
+
/**
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.
+ 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
@@ -4697,7 +7323,7 @@ AsmInvd (
addressing mode, then LinearAddress is a virtual
address.
- @return LinearAddress
+ @return LinearAddress.
**/
VOID *
EFIAPI
@@ -4705,6 +7331,7 @@ AsmFlushCacheLine (
IN VOID *LinearAddress
);
+
/**
Enables the 32-bit paging mode on the CPU.
@@ -4751,6 +7378,7 @@ AsmEnablePaging32 (
IN VOID *NewStack
);
+
/**
Disables the 32-bit paging mode on the CPU.
@@ -4794,6 +7422,7 @@ AsmDisablePaging32 (
IN VOID *NewStack
);
+
/**
Enables the 64-bit paging mode on the CPU.
@@ -4829,19 +7458,20 @@ AsmDisablePaging32 (
VOID
EFIAPI
AsmEnablePaging64 (
- IN UINT16 CodeSelector,
+ IN UINT16 Cs,
IN UINT64 EntryPoint,
IN UINT64 Context1, OPTIONAL
IN UINT64 Context2, OPTIONAL
IN UINT64 NewStack
);
+
/**
Disables the 64-bit paging mode on the CPU.
Disables the 64-bit paging mode on the CPU and returns to 32-bit protected
mode. This function assumes the current execution mode is 64-paging mode.
- This function is only available on X64. After the 64-bit paging mode is
+ This function is only available on x64. After the 64-bit paging mode is
disabled, control is transferred to the function specified by EntryPoint
using the new stack specified by NewStack and passing in the parameters
specified by Context1 and Context2. Context1 and Context2 are optional and
@@ -4869,13 +7499,14 @@ AsmEnablePaging64 (
VOID
EFIAPI
AsmDisablePaging64 (
- IN UINT16 CodeSelector,
+ IN UINT16 Cs,
IN UINT32 EntryPoint,
IN UINT32 Context1, OPTIONAL
IN UINT32 Context2, OPTIONAL
IN UINT32 NewStack
);
+
//
// 16-bit thunking services
//
@@ -4889,7 +7520,7 @@ AsmDisablePaging64 (
in ExtraStackSize. If parameters are passed to the 16-bit real mode code,
then the actual minimum stack size is ExtraStackSize plus the maximum number
of bytes that need to be passed to the 16-bit real mode code.
-
+
If RealModeBufferSize is NULL, then ASSERT().
If ExtraStackSize is NULL, then ASSERT().
@@ -4908,10 +7539,14 @@ AsmGetThunk16Properties (
OUT UINT32 *ExtraStackSize
);
+
/**
Prepares all structures a code required to use AsmThunk16().
Prepares all structures and code required to use AsmThunk16().
+
+ This interface is limited to be used in either physical mode or virtual modes with paging enabled where the
+ virtual to physical mappings for ThunkContext.RealModeBuffer is mapped 1:1.
If ThunkContext is NULL, then ASSERT().
@@ -4922,18 +7557,58 @@ AsmGetThunk16Properties (
VOID
EFIAPI
AsmPrepareThunk16 (
- OUT THUNK_CONTEXT *ThunkContext
+ IN OUT THUNK_CONTEXT *ThunkContext
);
+
/**
Transfers control to a 16-bit real mode entry point and returns the results.
Transfers control to a 16-bit real mode entry point and returns the results.
- AsmPrepareThunk16() must be called with ThunkContext before this function is
- used.
-
+ AsmPrepareThunk16() must be called with ThunkContext before this function is used.
+ This function must be called with interrupts disabled.
+
+ The register state from the RealModeState field of ThunkContext is restored just prior
+ to calling the 16-bit real mode entry point. This includes the EFLAGS field of RealModeState,
+ which is used to set the interrupt state when a 16-bit real mode entry point is called.
+ Control is transferred to the 16-bit real mode entry point specified by the CS and Eip fields of RealModeState.
+ The stack is initialized to the SS and ESP fields of RealModeState. Any parameters passed to
+ the 16-bit real mode code must be populated by the caller at SS:ESP prior to calling this function.
+ The 16-bit real mode entry point is invoked with a 16-bit CALL FAR instruction,
+ so when accessing stack contents, the 16-bit real mode code must account for the 16-bit segment
+ and 16-bit offset of the return address that were pushed onto the stack. The 16-bit real mode entry
+ point must exit with a RETF instruction. The register state is captured into RealModeState immediately
+ after the RETF instruction is executed.
+
+ If EFLAGS specifies interrupts enabled, or any of the 16-bit real mode code enables interrupts,
+ or any of the 16-bit real mode code makes a SW interrupt, then the caller is responsible for making sure
+ the IDT at address 0 is initialized to handle any HW or SW interrupts that may occur while in 16-bit real mode.
+
+ If EFLAGS specifies interrupts enabled, or any of the 16-bit real mode code enables interrupts,
+ then the caller is responsible for making sure the 8259 PIC is in a state compatible with 16-bit real mode.
+ This includes the base vectors, the interrupt masks, and the edge/level trigger mode.
+
+ If THUNK_ATTRIBUTE_BIG_REAL_MODE is set in the ThunkAttributes field of ThunkContext, then the user code
+ is invoked in big real mode. Otherwise, the user code is invoked in 16-bit real mode with 64KB segment limits.
+
+ If neither THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 nor THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL are set in
+ ThunkAttributes, then it is assumed that the user code did not enable the A20 mask, and no attempt is made to
+ disable the A20 mask.
+
+ If THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 is set and THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL is clear in
+ ThunkAttributes, then attempt to use the INT 15 service to disable the A20 mask. If this INT 15 call fails,
+ then attempt to disable the A20 mask by directly accessing the 8042 keyboard controller I/O ports.
+
+ If THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 is clear and THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL is set in
+ ThunkAttributes, then attempt to disable the A20 mask by directly accessing the 8042 keyboard controller I/O ports.
+
If ThunkContext is NULL, then ASSERT().
If AsmPrepareThunk16() was not previously called with ThunkContext, then ASSERT().
+ If both THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 and THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL are set in
+ ThunkAttributes, then ASSERT().
+
+ This interface is limited to be used in either physical mode or virtual modes with paging enabled where the
+ virtual to physical mappings for ThunkContext.RealModeBuffer are mapped 1:1.
@param ThunkContext A pointer to the context structure that describes the
16-bit real mode code to call.
@@ -4945,6 +7620,7 @@ AsmThunk16 (
IN OUT THUNK_CONTEXT *ThunkContext
);
+
/**
Prepares all structures and code for a 16-bit real mode thunk, transfers
control to a 16-bit real mode entry point, and returns the results.
@@ -4956,7 +7632,10 @@ AsmThunk16 (
real mode thunk, then it is more efficient if AsmPrepareThunk16() is called
once and AsmThunk16() can be called for each 16-bit real mode thunk.
- If ThunkContext is NULL, then ASSERT().
+ This interface is limited to be used in either physical mode or virtual modes with paging enabled where the
+ virtual to physical mappings for ThunkContext.RealModeBuffer is mapped 1:1.
+
+ See AsmPrepareThunk16() and AsmThunk16() for the detailed description and ASSERT() conditions.
@param ThunkContext A pointer to the context structure that describes the
16-bit real mode code to call.
@@ -4969,3 +7648,6 @@ AsmPrepareAndThunk16 (
);
#endif
+#endif
+
+