/** @file Provides string functions, linked list functions, math functions, synchronization functions, file path functions, and CPU architecture-specific functions. Copyright (c) 2006 - 2017, 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. **/ #ifndef __BASE_LIB__ #define __BASE_LIB__ // // Definitions for architecture-specific types // #if defined (MDE_CPU_IA32) /// /// The IA-32 architecture context buffer used by SetJump() and LongJump(). /// typedef struct { UINT32 Ebx; UINT32 Esi; UINT32 Edi; UINT32 Ebp; UINT32 Esp; UINT32 Eip; } BASE_LIBRARY_JUMP_BUFFER; #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]; UINT64 F4[2]; UINT64 F5[2]; UINT64 F16[2]; UINT64 F17[2]; UINT64 F18[2]; UINT64 F19[2]; UINT64 F20[2]; UINT64 F21[2]; UINT64 F22[2]; UINT64 F23[2]; UINT64 F24[2]; UINT64 F25[2]; UINT64 F26[2]; UINT64 F27[2]; UINT64 F28[2]; UINT64 F29[2]; UINT64 F30[2]; UINT64 F31[2]; UINT64 R4; UINT64 R5; UINT64 R6; UINT64 R7; UINT64 SP; UINT64 BR0; UINT64 BR1; UINT64 BR2; UINT64 BR3; UINT64 BR4; UINT64 BR5; UINT64 InitialUNAT; UINT64 AfterSpillUNAT; UINT64 PFS; UINT64 BSP; UINT64 Predicates; UINT64 LoopCount; UINT64 FPSR; } BASE_LIBRARY_JUMP_BUFFER; #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; UINT64 Rbp; UINT64 Rdi; UINT64 Rsi; UINT64 R12; UINT64 R13; UINT64 R14; UINT64 R15; UINT64 Rip; UINT64 MxCsr; UINT8 XmmBuffer[160]; ///< XMM6-XMM15. } BASE_LIBRARY_JUMP_BUFFER; #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; UINT64 R2; UINT64 R3; UINT64 IP; } BASE_LIBRARY_JUMP_BUFFER; #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. This function is similar as strlen_s defined in C11. 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 ); /** Returns the size of a Null-terminated Unicode string in bytes, including the Null terminator. This function returns the size of the Null-terminated Unicode string specified by String in bytes, including the Null terminator. 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 the Null terminator. @retval 0 If String is NULL. @retval (sizeof (CHAR16) * (MaxSize + 1)) If there is no Null terminator in the first MaxSize characters of String. @return The size of the Null-terminated Unicode string in bytes, including the Null terminator. **/ UINTN EFIAPI StrnSizeS ( 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. This function is similar as strcpy_s defined in C11. 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(). If an error is returned, then the Destination is unmodified. @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. This function is similar as strncpy_s defined in C11. 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(). If an error is returned, then the Destination is unmodified. @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. This function is similar as strcat_s defined in C11. 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(). If an error is returned, then the Destination is unmodified. @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. This function is similar as strncat_s defined in C11. 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(). If an error is returned, then the Destination is unmodified. @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 ); /** Convert a Null-terminated Unicode decimal string to a value of type UINTN. This function outputs 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: [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 Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then MAX_UINTN is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid decimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Unicode string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINTN. **/ RETURN_STATUS EFIAPI StrDecimalToUintnS ( IN CONST CHAR16 *String, OUT CHAR16 **EndPointer, OPTIONAL OUT UINTN *Data ); /** Convert a Null-terminated Unicode decimal string to a value of type UINT64. This function outputs 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 Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then MAX_UINT64 is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid decimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Unicode string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINT64. **/ RETURN_STATUS EFIAPI StrDecimalToUint64S ( IN CONST CHAR16 *String, OUT CHAR16 **EndPointer, OPTIONAL OUT UINT64 *Data ); /** Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN. This function outputs 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 Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then MAX_UINTN is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid hexadecimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Unicode string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINTN. **/ RETURN_STATUS EFIAPI StrHexToUintnS ( IN CONST CHAR16 *String, OUT CHAR16 **EndPointer, OPTIONAL OUT UINTN *Data ); /** Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64. This function outputs 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: [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 Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then MAX_UINT64 is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid hexadecimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Unicode string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINT64. **/ RETURN_STATUS EFIAPI StrHexToUint64S ( IN CONST CHAR16 *String, OUT CHAR16 **EndPointer, OPTIONAL OUT UINT64 *Data ); /** Returns the length of a Null-terminated Ascii string. This function is similar as strlen_s defined in C11. @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 ); /** Returns the size of a Null-terminated Ascii string in bytes, including the Null terminator. This function returns the size of the Null-terminated Ascii string specified by String in bytes, including the Null terminator. @param String A pointer to a Null-terminated Ascii string. @param MaxSize The maximum number of Destination Ascii char, including the Null terminator. @retval 0 If String is NULL. @retval (sizeof (CHAR8) * (MaxSize + 1)) If there is no Null terminator in the first MaxSize characters of String. @return The size of the Null-terminated Ascii string in bytes, including the Null terminator. **/ UINTN EFIAPI AsciiStrnSizeS ( 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. This function is similar as strcpy_s defined in C11. If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @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. This function is similar as strncpy_s defined in C11. If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @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. This function is similar as strcat_s defined in C11. If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @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. This function is similar as strncat_s defined in C11. If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @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 ); /** Convert a Null-terminated Ascii decimal string to a value of type UINTN. This function outputs a value of type UINTN by interpreting the contents of the Ascii string specified by String as a decimal number. The format of the input Ascii 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 Data 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 has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then MAX_UINTN is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid decimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Ascii string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumAsciiStringLength is not zero, and String contains more than PcdMaximumAsciiStringLength Ascii characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINTN. **/ RETURN_STATUS EFIAPI AsciiStrDecimalToUintnS ( IN CONST CHAR8 *String, OUT CHAR8 **EndPointer, OPTIONAL OUT UINTN *Data ); /** Convert a Null-terminated Ascii decimal string to a value of type UINT64. This function outputs a value of type UINT64 by interpreting the contents of the Ascii string specified by String as a decimal number. The format of the input Ascii 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 Data 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 has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then MAX_UINT64 is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid decimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Ascii string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumAsciiStringLength is not zero, and String contains more than PcdMaximumAsciiStringLength Ascii characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINT64. **/ RETURN_STATUS EFIAPI AsciiStrDecimalToUint64S ( IN CONST CHAR8 *String, OUT CHAR8 **EndPointer, OPTIONAL OUT UINT64 *Data ); /** Convert a Null-terminated Ascii hexadecimal string to a value of type UINTN. This function outputs a value of type UINTN by interpreting the contents of the Ascii string specified by 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 is NULL, then ASSERT(). If Data 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 has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then MAX_UINTN is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid hexadecimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Ascii string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumAsciiStringLength is not zero, and String contains more than PcdMaximumAsciiStringLength Ascii characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINTN. **/ RETURN_STATUS EFIAPI AsciiStrHexToUintnS ( IN CONST CHAR8 *String, OUT CHAR8 **EndPointer, OPTIONAL OUT UINTN *Data ); /** Convert a Null-terminated Ascii hexadecimal string to a value of type UINT64. This function outputs a value of type UINT64 by interpreting the contents of the Ascii string specified by 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 is NULL, then ASSERT(). If Data 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 has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then MAX_UINT64 is stored at the location pointed to by Data. If EndPointer is not NULL, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. If String has no valid hexadecimal digits right after the optional pad spaces, the value of String is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Ascii string. @param EndPointer Pointer to character that stops scan. @param Data Pointer to the converted value. @retval RETURN_SUCCESS Value is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If PcdMaximumAsciiStringLength is not zero, and String contains more than PcdMaximumAsciiStringLength Ascii characters, not including the Null-terminator. @retval RETURN_UNSUPPORTED If the number represented by String exceeds the range defined by UINT64. **/ RETURN_STATUS EFIAPI AsciiStrHexToUint64S ( IN CONST CHAR8 *String, OUT CHAR8 **EndPointer, OPTIONAL OUT UINT64 *Data ); #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. This function copies the contents of the Unicode string Source to the Unicode string Destination, and returns Destination. If Source and Destination 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 Null-terminator, then ASSERT(). @param Destination The pointer to a Null-terminated Unicode string. @param Source The pointer to a Null-terminated Unicode string. @return Destination. **/ CHAR16 * EFIAPI StrCpy ( OUT CHAR16 *Destination, IN CONST CHAR16 *Source ); /** [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 characters are copied from Source to Destination. If Length is 0, then Destination is returned unmodified. If Length is greater that the number of Unicode characters in Source, then Destination is padded with Null Unicode characters. If Source and Destination overlap, then the results are undefined. 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(). @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. **/ CHAR16 * EFIAPI StrnCpy ( OUT CHAR16 *Destination, IN CONST CHAR16 *Source, IN UINTN Length ); #endif /** Returns the length of a Null-terminated Unicode string. This function returns the number of Unicode characters in 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 Null-terminator, then ASSERT(). @param String Pointer to a Null-terminated Unicode string. @return The length of String. **/ UINTN 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. 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 Null-terminator, then ASSERT(). @param String The pointer to a Null-terminated Unicode string. @return The size of String. **/ UINTN EFIAPI StrSize ( IN CONST CHAR16 *String ); /** Compares 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. If FirstString is identical to SecondString, then 0 is returned. Otherwise, the 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 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 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 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. @return others FirstString is not identical to SecondString. **/ INTN EFIAPI StrCmp ( IN CONST CHAR16 *FirstString, IN CONST CHAR16 *SecondString ); /** 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 FirstString is identical to SecondString, then 0 is returned. Otherwise, the value returned is the first mismatched Unicode character in SecondString subtracted from the first mismatched Unicode character in FirstString. 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 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. @return others FirstString is not identical to SecondString. **/ INTN EFIAPI StrnCmp ( IN CONST CHAR16 *FirstString, 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. This function concatenates two Null-terminated Unicode strings. The contents of Null-terminated Unicode string Source are concatenated to the end of Null-terminated Unicode string Destination. The Null-terminated concatenated Unicode String is returned. If Source and Destination 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 Destination contains more 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 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(). @param Destination The pointer to a Null-terminated Unicode string. @param Source The pointer to a Null-terminated Unicode string. @return Destination. **/ CHAR16 * EFIAPI StrCat ( IN OUT CHAR16 *Destination, IN CONST CHAR16 *Source ); /** [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 of Null-terminated Unicode string Source are concatenated to the end of Null-terminated Unicode string Destination, and Destination is returned. At most, Length Unicode characters are concatenated from Source to the end of Destination, and Destination is always Null-terminated. If Length is 0, then Destination is returned unmodified. If Source and Destination overlap, then the results are undefined. If 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 Destination contains more 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 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(). @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. **/ CHAR16 * EFIAPI StrnCat ( IN OUT CHAR16 *Destination, IN CONST CHAR16 *Source, IN UINTN Length ); #endif /** Returns the first occurrence of a Null-terminated Unicode sub-string in a Null-terminated Unicode string. 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 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(). If PcdMaximumUnicodeStringLength is not zero, and SearchString or String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). @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. **/ CHAR16 * EFIAPI StrStr ( IN CONST CHAR16 *String, IN CONST CHAR16 *SearchString ); /** Convert a Null-terminated Unicode decimal string to a value of type UINTN. 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: [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 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 MAX_UINTN is returned. 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. **/ UINTN EFIAPI StrDecimalToUintn ( IN CONST CHAR16 *String ); /** Convert a Null-terminated Unicode decimal string to a value of type UINT64. 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 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 MAX_UINT64 is returned. 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 StrDecimalToUint64 ( IN CONST CHAR16 *String ); /** Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN. 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 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 MAX_UINTN is returned. 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. **/ UINTN EFIAPI StrHexToUintn ( IN CONST CHAR16 *String ); /** Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64. 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 [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 MAX_UINT64 is returned. 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 IPv6 address and prefix length. This function outputs a value of type IPv6_ADDRESS and may output a value of type UINT8 by interpreting the contents of the Unicode string specified by String. The format of the input Unicode string String is as follows: X:X:X:X:X:X:X:X[/P] X contains one to four hexadecimal digit characters in the range [0-9], [a-f] and [A-F]. X is converted to a value of type UINT16, whose low byte is stored in low memory address and high byte is stored in high memory address. P contains decimal digit characters in the range [0-9]. The running zero in the beginning of P will be ignored. /P is optional. When /P is not in the String, the function stops at the first character that is not a valid hexadecimal digit character after eight X's are converted. When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. "::" can be used to compress one or more groups of X when X contains only 0. The "::" can only appear once in the String. If String is NULL, then ASSERT(). If Address is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Unicode string. @param EndPointer Pointer to character that stops scan. @param Address Pointer to the converted IPv6 address. @param PrefixLength Pointer to the converted IPv6 address prefix length. MAX_UINT8 is returned when /P is not in the String. @retval RETURN_SUCCESS Address is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. @retval RETURN_UNSUPPORTED If X contains more than four hexadecimal digit characters. If String contains "::" and number of X is not less than 8. If P starts with character that is not a valid decimal digit character. If the decimal number converted from P exceeds 128. **/ RETURN_STATUS EFIAPI StrToIpv6Address ( IN CONST CHAR16 *String, OUT CHAR16 **EndPointer, OPTIONAL OUT IPv6_ADDRESS *Address, OUT UINT8 *PrefixLength OPTIONAL ); /** Convert a Null-terminated Unicode string to IPv4 address and prefix length. This function outputs a value of type IPv4_ADDRESS and may output a value of type UINT8 by interpreting the contents of the Unicode string specified by String. The format of the input Unicode string String is as follows: D.D.D.D[/P] D and P are decimal digit characters in the range [0-9]. The running zero in the beginning of D and P will be ignored. /P is optional. When /P is not in the String, the function stops at the first character that is not a valid decimal digit character after four D's are converted. When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. If String is NULL, then ASSERT(). If Address is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator, then ASSERT(). If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated Unicode string. @param EndPointer Pointer to character that stops scan. @param Address Pointer to the converted IPv4 address. @param PrefixLength Pointer to the converted IPv4 address prefix length. MAX_UINT8 is returned when /P is not in the String. @retval RETURN_SUCCESS Address is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. @retval RETURN_UNSUPPORTED If String is not in the correct format. If any decimal number converted from D exceeds 255. If the decimal number converted from P exceeds 32. **/ RETURN_STATUS EFIAPI StrToIpv4Address ( IN CONST CHAR16 *String, OUT CHAR16 **EndPointer, OPTIONAL OUT IPv4_ADDRESS *Address, OUT UINT8 *PrefixLength OPTIONAL ); #define GUID_STRING_LENGTH 36 /** Convert a Null-terminated Unicode GUID string to a value of type EFI_GUID. This function outputs a GUID value by interpreting the contents of the Unicode string specified by String. The format of the input Unicode string String consists of 36 characters, as follows: aabbccdd-eeff-gghh-iijj-kkllmmnnoopp The pairs aa - pp are two characters in the range [0-9], [a-f] and [A-F], with each pair representing a single byte hexadecimal value. The mapping between String and the EFI_GUID structure is as follows: aa Data1[24:31] bb Data1[16:23] cc Data1[8:15] dd Data1[0:7] ee Data2[8:15] ff Data2[0:7] gg Data3[8:15] hh Data3[0:7] ii Data4[0:7] jj Data4[8:15] kk Data4[16:23] ll Data4[24:31] mm Data4[32:39] nn Data4[40:47] oo Data4[48:55] pp Data4[56:63] If String is NULL, then ASSERT(). If Guid is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). @param String Pointer to a Null-terminated Unicode string. @param Guid Pointer to the converted GUID. @retval RETURN_SUCCESS Guid is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. @retval RETURN_UNSUPPORTED If String is not as the above format. **/ RETURN_STATUS EFIAPI StrToGuid ( IN CONST CHAR16 *String, OUT GUID *Guid ); /** Convert a Null-terminated Unicode hexadecimal string to a byte array. This function outputs a byte array by interpreting the contents of the Unicode string specified by String in hexadecimal format. The format of the input Unicode string String is: [XX]* X is a hexadecimal digit character in the range [0-9], [a-f] and [A-F]. The function decodes every two hexadecimal digit characters as one byte. The decoding stops after Length of characters and outputs Buffer containing (Length / 2) bytes. If String is not aligned in a 16-bit boundary, then ASSERT(). If String is NULL, then ASSERT(). If Buffer is NULL, then ASSERT(). If Length is not multiple of 2, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero and Length is greater than PcdMaximumUnicodeStringLength, then ASSERT(). If MaxBufferSize is less than (Length / 2), then ASSERT(). @param String Pointer to a Null-terminated Unicode string. @param Length The number of Unicode characters to decode. @param Buffer Pointer to the converted bytes array. @param MaxBufferSize The maximum size of Buffer. @retval RETURN_SUCCESS Buffer is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If Length is not multiple of 2. If PcdMaximumUnicodeStringLength is not zero, and Length is greater than PcdMaximumUnicodeStringLength. @retval RETURN_UNSUPPORTED If Length of characters from String contain a character that is not valid hexadecimal digit characters, or a Null-terminator. @retval RETURN_BUFFER_TOO_SMALL If MaxBufferSize is less than (Length / 2). **/ RETURN_STATUS EFIAPI StrHexToBytes ( IN CONST CHAR16 *String, IN UINTN Length, OUT UINT8 *Buffer, IN UINTN MaxBufferSize ); #ifndef DISABLE_NEW_DEPRECATED_INTERFACES /** [ATTENTION] This function is deprecated for security reason. 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 ); #endif /** Convert a Null-terminated Unicode string to a Null-terminated ASCII string. This function is similar to AsciiStrCpyS. 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. The function terminates the ASCII 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 ((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 Source is not aligned on a 16-bit boundary, then ASSERT(). If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @param Source The pointer to a Null-terminated Unicode string. @param Destination The pointer to a Null-terminated ASCII string. @param DestMax The maximum number of Destination Ascii char, including terminating null char. @retval RETURN_SUCCESS String is converted. @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 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 UnicodeStrToAsciiStrS ( IN CONST CHAR16 *Source, OUT CHAR8 *Destination, IN UINTN DestMax ); /** Convert not more than Length successive characters from a Null-terminated Unicode string to a Null-terminated Ascii string. If no null char is copied from Source, then Destination[Length] is always set to null. This function converts not more than Length successive characters from the Unicode string Source to the Ascii string Destination by copying the lower 8 bits of each Unicode character. The function terminates the Ascii 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 ((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 Source is not aligned on a 16-bit boundary, then ASSERT(). If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @param Source The pointer to a Null-terminated Unicode string. @param Length The maximum number of Unicode characters to convert. @param Destination The pointer to a Null-terminated Ascii string. @param DestMax The maximum number of Destination Ascii char, including terminating null char. @param DestinationLength The number of Unicode characters converted. @retval RETURN_SUCCESS String is converted. @retval RETURN_INVALID_PARAMETER If Destination is NULL. If Source is NULL. If DestinationLength is NULL. If PcdMaximumAsciiStringLength is not zero, and Length or DestMax is greater than PcdMaximumAsciiStringLength. If PcdMaximumUnicodeStringLength is not zero, and Length or DestMax is greater than PcdMaximumUnicodeStringLength. If DestMax is 0. @retval RETURN_BUFFER_TOO_SMALL If DestMax is NOT greater than MIN(StrLen(Source), Length). @retval RETURN_ACCESS_DENIED If Source and Destination overlap. **/ RETURN_STATUS EFIAPI UnicodeStrnToAsciiStrS ( IN CONST CHAR16 *Source, IN UINTN Length, OUT CHAR8 *Destination, IN UINTN DestMax, OUT UINTN *DestinationLength ); #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 EFIAPI 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. This function performs a case insensitive comparison of 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 lower case ASCII character in SecondString subtracted from the first mismatched lower case 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 using case insensitive comparisons. @retval !=0 FirstString is not identical to SecondString using case insensitive comparisons. **/ INTN EFIAPI 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. This function compares the Null-terminated ASCII string FirstString to the Null-terminated ASCII string SecondString. At most, Length ASCII characters will be compared. If Length is 0, then 0 is returned. 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 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, then ASSERT(). @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 EFIAPI AsciiStrnCmp ( IN CONST CHAR8 *FirstString, 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. This function concatenates two Null-terminated ASCII strings. The contents of Null-terminated ASCII string Source are concatenated to the end of Null- terminated ASCII string Destination. The Null-terminated concatenated ASCII String is returned. If Destination is NULL, then ASSERT(). If Source is NULL, then ASSERT(). If PcdMaximumAsciiStringLength is not zero and Destination contains more than 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, then ASSERT(). If PcdMaximumAsciiStringLength is not zero and concatenating Destination and Source results in a ASCII string with more than PcdMaximumAsciiStringLength ASCII characters, 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 AsciiStrCat ( IN OUT CHAR8 *Destination, IN CONST CHAR8 *Source ); /** [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- terminated ASCII string Destination, and Destination is returned. At most, Length ASCII characters are concatenated from Source to the end of Destination, and Destination is always Null-terminated. If Length is 0, then Destination is returned unmodified. If Source and Destination overlap, then the results are undefined. 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, then ASSERT(). If PcdMaximumAsciiStringLength is not zero, and Source contains more than 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(). @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 **/ CHAR8 * EFIAPI AsciiStrnCat ( IN OUT CHAR8 *Destination, IN CONST CHAR8 *Source, IN UINTN Length ); #endif /** Returns the first occurrence of a Null-terminated ASCII sub-string in a Null-terminated ASCII string. 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 String is NULL, then ASSERT(). If SearchString is NULL, then ASSERT(). If PcdMaximumAsciiStringLength is not zero, and SearchString or String contains more than PcdMaximumAsciiStringLength Unicode characters not including the Null-terminator, then ASSERT(). @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. **/ CHAR8 * EFIAPI AsciiStrStr ( IN CONST CHAR8 *String, IN CONST CHAR8 *SearchString ); /** Convert a Null-terminated ASCII decimal string to a value of type UINTN. 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: [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 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. 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 MAX_UINTN is returned. 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. **/ UINTN EFIAPI AsciiStrDecimalToUintn ( IN CONST CHAR8 *String ); /** Convert a Null-terminated ASCII decimal string to a value of type UINT64. 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: [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 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. 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 MAX_UINT64 is returned. 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 AsciiStrDecimalToUint64 ( IN CONST CHAR8 *String ); /** Convert a Null-terminated ASCII hexadecimal string to a value of type UINTN. 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: [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 UINTN, then MAX_UINTN is returned. 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. **/ UINTN EFIAPI AsciiStrHexToUintn ( IN CONST CHAR8 *String ); /** Convert a Null-terminated ASCII hexadecimal string to a value of type UINT64. 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 MAX_UINT64 is returned. 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 a Null-terminated ASCII string to IPv6 address and prefix length. This function outputs a value of type IPv6_ADDRESS and may output a value of type UINT8 by interpreting the contents of the ASCII string specified by String. The format of the input ASCII string String is as follows: X:X:X:X:X:X:X:X[/P] X contains one to four hexadecimal digit characters in the range [0-9], [a-f] and [A-F]. X is converted to a value of type UINT16, whose low byte is stored in low memory address and high byte is stored in high memory address. P contains decimal digit characters in the range [0-9]. The running zero in the beginning of P will be ignored. /P is optional. When /P is not in the String, the function stops at the first character that is not a valid hexadecimal digit character after eight X's are converted. When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. "::" can be used to compress one or more groups of X when X contains only 0. The "::" can only appear once in the String. If String is NULL, then ASSERT(). If Address is NULL, then ASSERT(). If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated ASCII string. @param EndPointer Pointer to character that stops scan. @param Address Pointer to the converted IPv6 address. @param PrefixLength Pointer to the converted IPv6 address prefix length. MAX_UINT8 is returned when /P is not in the String. @retval RETURN_SUCCESS Address is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. @retval RETURN_UNSUPPORTED If X contains more than four hexadecimal digit characters. If String contains "::" and number of X is not less than 8. If P starts with character that is not a valid decimal digit character. If the decimal number converted from P exceeds 128. **/ RETURN_STATUS EFIAPI AsciiStrToIpv6Address ( IN CONST CHAR8 *String, OUT CHAR8 **EndPointer, OPTIONAL OUT IPv6_ADDRESS *Address, OUT UINT8 *PrefixLength OPTIONAL ); /** Convert a Null-terminated ASCII string to IPv4 address and prefix length. This function outputs a value of type IPv4_ADDRESS and may output a value of type UINT8 by interpreting the contents of the ASCII string specified by String. The format of the input ASCII string String is as follows: D.D.D.D[/P] D and P are decimal digit characters in the range [0-9]. The running zero in the beginning of D and P will be ignored. /P is optional. When /P is not in the String, the function stops at the first character that is not a valid decimal digit character after four D's are converted. When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. If String is NULL, then ASSERT(). If Address is NULL, then ASSERT(). If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @param String Pointer to a Null-terminated ASCII string. @param EndPointer Pointer to character that stops scan. @param Address Pointer to the converted IPv4 address. @param PrefixLength Pointer to the converted IPv4 address prefix length. MAX_UINT8 is returned when /P is not in the String. @retval RETURN_SUCCESS Address is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. @retval RETURN_UNSUPPORTED If String is not in the correct format. If any decimal number converted from D exceeds 255. If the decimal number converted from P exceeds 32. **/ RETURN_STATUS EFIAPI AsciiStrToIpv4Address ( IN CONST CHAR8 *String, OUT CHAR8 **EndPointer, OPTIONAL OUT IPv4_ADDRESS *Address, OUT UINT8 *PrefixLength OPTIONAL ); /** Convert a Null-terminated ASCII GUID string to a value of type EFI_GUID. This function outputs a GUID value by interpreting the contents of the ASCII string specified by String. The format of the input ASCII string String consists of 36 characters, as follows: aabbccdd-eeff-gghh-iijj-kkllmmnnoopp The pairs aa - pp are two characters in the range [0-9], [a-f] and [A-F], with each pair representing a single byte hexadecimal value. The mapping between String and the EFI_GUID structure is as follows: aa Data1[24:31] bb Data1[16:23] cc Data1[8:15] dd Data1[0:7] ee Data2[8:15] ff Data2[0:7] gg Data3[8:15] hh Data3[0:7] ii Data4[0:7] jj Data4[8:15] kk Data4[16:23] ll Data4[24:31] mm Data4[32:39] nn Data4[40:47] oo Data4[48:55] pp Data4[56:63] If String is NULL, then ASSERT(). If Guid is NULL, then ASSERT(). @param String Pointer to a Null-terminated ASCII string. @param Guid Pointer to the converted GUID. @retval RETURN_SUCCESS Guid is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. @retval RETURN_UNSUPPORTED If String is not as the above format. **/ RETURN_STATUS EFIAPI AsciiStrToGuid ( IN CONST CHAR8 *String, OUT GUID *Guid ); /** Convert a Null-terminated ASCII hexadecimal string to a byte array. This function outputs a byte array by interpreting the contents of the ASCII string specified by String in hexadecimal format. The format of the input ASCII string String is: [XX]* X is a hexadecimal digit character in the range [0-9], [a-f] and [A-F]. The function decodes every two hexadecimal digit characters as one byte. The decoding stops after Length of characters and outputs Buffer containing (Length / 2) bytes. If String is NULL, then ASSERT(). If Buffer is NULL, then ASSERT(). If Length is not multiple of 2, then ASSERT(). If PcdMaximumAsciiStringLength is not zero and Length is greater than PcdMaximumAsciiStringLength, then ASSERT(). If MaxBufferSize is less than (Length / 2), then ASSERT(). @param String Pointer to a Null-terminated ASCII string. @param Length The number of ASCII characters to decode. @param Buffer Pointer to the converted bytes array. @param MaxBufferSize The maximum size of Buffer. @retval RETURN_SUCCESS Buffer is translated from String. @retval RETURN_INVALID_PARAMETER If String is NULL. If Data is NULL. If Length is not multiple of 2. If PcdMaximumAsciiStringLength is not zero, and Length is greater than PcdMaximumAsciiStringLength. @retval RETURN_UNSUPPORTED If Length of characters from String contain a character that is not valid hexadecimal digit characters, or a Null-terminator. @retval RETURN_BUFFER_TOO_SMALL If MaxBufferSize is less than (Length / 2). **/ RETURN_STATUS EFIAPI AsciiStrHexToBytes ( IN CONST CHAR8 *String, IN UINTN Length, OUT UINT8 *Buffer, IN UINTN MaxBufferSize ); #ifndef DISABLE_NEW_DEPRECATED_INTERFACES /** [ATTENTION] This function is deprecated for security reason. 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 ); #endif /** Convert one Null-terminated ASCII string to a Null-terminated Unicode string. This function is similar to StrCpyS. This function converts the contents of the ASCII string Source to the Unicode string 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 not aligned on a 16-bit boundary, then ASSERT(). If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @param Source The pointer to a Null-terminated ASCII string. @param Destination The pointer to a Null-terminated Unicode string. @param DestMax The maximum number of Destination Unicode char, including terminating null char. @retval RETURN_SUCCESS String is converted. @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 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 AsciiStrToUnicodeStrS ( IN CONST CHAR8 *Source, OUT CHAR16 *Destination, IN UINTN DestMax ); /** Convert not more than Length successive characters from a Null-terminated Ascii string to a Null-terminated Unicode string. If no null char is copied from Source, then Destination[Length] is always set to null. This function converts not more than Length successive characters from the Ascii string Source to the Unicode string 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 not smaller than ((MIN(AsciiStrLen(Source), Length) + 1) * sizeof (CHAR8)) in bytes. If Destination is not aligned on a 16-bit boundary, then ASSERT(). If an error would be returned, then the function will also ASSERT(). If an error is returned, then Destination and DestinationLength are unmodified. @param Source The pointer to a Null-terminated Ascii string. @param Length The maximum number of Ascii characters to convert. @param Destination The pointer to a Null-terminated Unicode string. @param DestMax The maximum number of Destination Unicode char, including terminating null char. @param DestinationLength The number of Ascii characters converted. @retval RETURN_SUCCESS String is converted. @retval RETURN_INVALID_PARAMETER If Destination is NULL. If Source is NULL. If DestinationLength is NULL. If PcdMaximumUnicodeStringLength is not zero, and Length or DestMax is greater than PcdMaximumUnicodeStringLength. If PcdMaximumAsciiStringLength is not zero, and Length or DestMax is greater than PcdMaximumAsciiStringLength. If DestMax is 0. @retval RETURN_BUFFER_TOO_SMALL If DestMax is NOT greater than MIN(AsciiStrLen(Source), Length). @retval RETURN_ACCESS_DENIED If Source and Destination overlap. **/ RETURN_STATUS EFIAPI AsciiStrnToUnicodeStrS ( IN CONST CHAR8 *Source, IN UINTN Length, OUT CHAR16 *Destination, IN UINTN DestMax, OUT UINTN *DestinationLength ); /** 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. @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 occurred. **/ 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)} /** Checks whether FirstEntry and SecondEntry are part of the same doubly-linked list. If FirstEntry is NULL, then ASSERT(). If FirstEntry->ForwardLink is NULL, then ASSERT(). If FirstEntry->BackLink is NULL, then ASSERT(). If SecondEntry is NULL, then ASSERT(); If PcdMaximumLinkedListLength is not zero, and List contains more than PcdMaximumLinkedListLength nodes, then ASSERT(). @param FirstEntry A pointer to a node in a linked list. @param SecondEntry A pointer to the node to locate. @retval TRUE SecondEntry is in the same doubly-linked list as FirstEntry. @retval FALSE SecondEntry isn't in the same doubly-linked list as FirstEntry, or FirstEntry is invalid. **/ BOOLEAN EFIAPI IsNodeInList ( IN CONST LIST_ENTRY *FirstEntry, IN CONST LIST_ENTRY *SecondEntry ); /** 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 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. @param Entry A pointer to a node that is to be inserted at the beginning of a doubly linked list. @return ListHead **/ LIST_ENTRY * EFIAPI InsertHeadList ( 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. Adds the node Entry to the end 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 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. @param Entry A pointer to a node that is to be added at the end of the doubly linked list. @return ListHead **/ LIST_ENTRY * EFIAPI InsertTailList ( 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 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 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 List The list is empty. **/ LIST_ENTRY * EFIAPI 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 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 next node if one exists. Otherwise List is returned. **/ LIST_ENTRY * EFIAPI GetNextNode ( IN CONST LIST_ENTRY *List, 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. Checks to see if the doubly linked list is empty. If the linked list contains zero nodes, this function returns TRUE. Otherwise, it returns FALSE. If ListHead is NULL, then ASSERT(). 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. @retval TRUE The linked list is empty. @retval FALSE The linked list is not empty. **/ BOOLEAN EFIAPI IsListEmpty ( IN CONST LIST_ENTRY *ListHead ); /** 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 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 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 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 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 EFIAPI IsNull ( IN CONST LIST_ENTRY *List, 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 INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead(). 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 the number of nodes in List, including the List node, is greater than or equal to PcdMaximumLinkedListLength, 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. @retval TRUE Node is the last node in the linked list. @retval FALSE Node is not the last node in the linked list. **/ BOOLEAN EFIAPI IsNodeAtEnd ( IN CONST LIST_ENTRY *List, IN CONST LIST_ENTRY *Node ); /** Swaps the location of two nodes in a doubly linked list, and returns the first node after the swap. If FirstEntry is identical to SecondEntry, then SecondEntry is returned. 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 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 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 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 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. Removes the node Entry from a doubly linked list. It is up to the caller of this function to release the memory used by this node if that is required. On exit, the node following Entry in the doubly linked list is returned. If Entry is the only node in the linked list, then the head node of the linked list is returned. 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 or equal to PcdMaximumLinkedListLength, then ASSERT(). @param Entry A pointer to a node in a linked list. @return Entry. **/ LIST_ENTRY * EFIAPI RemoveEntryList ( IN CONST LIST_ENTRY *Entry ); // // Math Services // /** Shifts a 64-bit integer left between 0 and 63 bits. The low bits are filled with zeros. The shifted value is returned. This function shifts the 64-bit value Operand to the left by Count bits. The low Count bits are set to zero. The shifted value is returned. If Count is greater than 63, then ASSERT(). @param Operand The 64-bit operand to shift left. @param Count The number of bits to shift left. @return Operand << Count. **/ UINT64 EFIAPI LShiftU64 ( IN UINT64 Operand, 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. This function shifts the 64-bit value Operand to the right by Count bits. The high Count bits are set to zero. The shifted value is returned. If Count is greater than 63, then ASSERT(). @param Operand The 64-bit operand to shift right. @param Count The number of bits to shift right. @return Operand >> Count **/ UINT64 EFIAPI RShiftU64 ( IN UINT64 Operand, 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. This function shifts the 64-bit value Operand to the right by Count bits. The high Count bits are set to bit 63 of Operand. The shifted value is returned. If Count is greater than 63, then ASSERT(). @param Operand The 64-bit operand to shift right. @param Count The number of bits to shift right. @return Operand >> Count **/ UINT64 EFIAPI ARShiftU64 ( IN UINT64 Operand, 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. This function rotates the 32-bit value Operand to the left by Count bits. The low Count bits are fill with the high Count bits of Operand. The rotated value is returned. If Count is greater than 31, then ASSERT(). @param Operand The 32-bit operand to rotate left. @param Count The number of bits to rotate left. @return Operand << Count **/ UINT32 EFIAPI LRotU32 ( IN UINT32 Operand, 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. This function rotates the 32-bit value Operand to the right by Count bits. The high Count bits are fill with the low Count bits of Operand. The rotated value is returned. If Count is greater than 31, then ASSERT(). @param Operand The 32-bit operand to rotate right. @param Count The number of bits to rotate right. @return Operand >> Count **/ UINT32 EFIAPI RRotU32 ( IN UINT32 Operand, 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. This function rotates the 64-bit value Operand to the left by Count bits. The low Count bits are fill with the high Count bits of Operand. The rotated value is returned. If Count is greater than 63, then ASSERT(). @param Operand The 64-bit operand to rotate left. @param Count The number of bits to rotate left. @return Operand << Count **/ UINT64 EFIAPI LRotU64 ( IN UINT64 Operand, 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. This function rotates the 64-bit value Operand to the right by Count bits. The high Count bits are fill with the low Count bits of Operand. The rotated value is returned. If Count is greater than 63, then ASSERT(). @param Operand The 64-bit operand to rotate right. @param Count The number of bits to rotate right. @return Operand >> Count **/ UINT64 EFIAPI RRotU64 ( IN UINT64 Operand, IN UINTN Count ); /** Returns the bit position of the lowest bit set in a 32-bit value. This function computes the bit position of the lowest bit set in the 32-bit value specified by Operand. If Operand is zero, then -1 is returned. Otherwise, a value between 0 and 31 is returned. @param Operand The 32-bit operand to evaluate. @retval 0..31 The lowest bit set in Operand was found. @retval -1 Operand is zero. **/ INTN EFIAPI LowBitSet32 ( IN UINT32 Operand ); /** Returns the bit position of the lowest bit set in a 64-bit value. This function computes the bit position of the lowest bit set in the 64-bit value specified by Operand. If Operand is zero, then -1 is returned. Otherwise, a value between 0 and 63 is returned. @param Operand The 64-bit operand to evaluate. @retval 0..63 The lowest bit set in Operand was found. @retval -1 Operand is zero. **/ INTN EFIAPI LowBitSet64 ( IN UINT64 Operand ); /** Returns the bit position of the highest bit set in a 32-bit value. Equivalent to log2(x). This function computes the bit position of the highest bit set in the 32-bit value specified by Operand. If Operand is zero, then -1 is returned. Otherwise, a value between 0 and 31 is returned. @param Operand The 32-bit operand to evaluate. @retval 0..31 Position of the highest bit set in Operand if found. @retval -1 Operand is zero. **/ INTN EFIAPI HighBitSet32 ( IN UINT32 Operand ); /** Returns the bit position of the highest bit set in a 64-bit value. Equivalent to log2(x). This function computes the bit position of the highest bit set in the 64-bit value specified by Operand. If Operand is zero, then -1 is returned. Otherwise, a value between 0 and 63 is returned. @param Operand The 64-bit operand to evaluate. @retval 0..63 Position of the highest bit set in Operand if found. @retval -1 Operand is zero. **/ INTN EFIAPI HighBitSet64 ( IN UINT64 Operand ); /** Returns the value of the highest bit set in a 32-bit value. Equivalent to 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. @param Operand The 32-bit operand to evaluate. @return 1 << HighBitSet32(Operand) @retval 0 Operand is zero. **/ UINT32 EFIAPI GetPowerOfTwo32 ( IN UINT32 Operand ); /** Returns the value of the highest bit set in a 64-bit value. Equivalent to 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. @param Operand The 64-bit operand to evaluate. @return 1 << HighBitSet64(Operand) @retval 0 Operand is zero. **/ UINT64 EFIAPI GetPowerOfTwo64 ( IN UINT64 Operand ); /** 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 Value A 16-bit unsigned value. @return The byte swapped Value. **/ UINT16 EFIAPI SwapBytes16 ( IN UINT16 Value ); /** 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 Value A 32-bit unsigned value. @return The byte swapped Value. **/ UINT32 EFIAPI SwapBytes32 ( IN UINT32 Value ); /** 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 Value A 64-bit unsigned value. @return The byte swapped Value. **/ UINT64 EFIAPI SwapBytes64 ( IN UINT64 Value ); /** Multiples a 64-bit unsigned integer by a 32-bit unsigned integer and generates a 64-bit unsigned result. This function multiples the 64-bit unsigned value Multiplicand by the 32-bit unsigned value Multiplier and generates a 64-bit unsigned result. This 64- bit unsigned result is returned. @param Multiplicand A 64-bit unsigned value. @param Multiplier A 32-bit unsigned value. @return Multiplicand * Multiplier **/ UINT64 EFIAPI MultU64x32 ( IN UINT64 Multiplicand, IN UINT32 Multiplier ); /** Multiples a 64-bit unsigned integer by a 64-bit unsigned integer and generates a 64-bit unsigned result. This function multiples the 64-bit unsigned value Multiplicand by the 64-bit unsigned value Multiplier and generates a 64-bit unsigned result. This 64- bit unsigned result is returned. @param Multiplicand A 64-bit unsigned value. @param Multiplier A 64-bit unsigned value. @return Multiplicand * Multiplier. **/ UINT64 EFIAPI MultU64x64 ( IN UINT64 Multiplicand, IN UINT64 Multiplier ); /** Multiples a 64-bit signed integer by a 64-bit signed integer and generates a 64-bit signed result. This function multiples the 64-bit signed value Multiplicand by the 64-bit signed value Multiplier and generates a 64-bit signed result. This 64-bit signed result is returned. @param Multiplicand A 64-bit signed value. @param Multiplier A 64-bit signed value. @return Multiplicand * Multiplier **/ INT64 EFIAPI MultS64x64 ( IN INT64 Multiplicand, IN INT64 Multiplier ); /** Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates a 64-bit unsigned result. This function divides the 64-bit unsigned value Dividend by the 32-bit unsigned value Divisor and generates a 64-bit unsigned quotient. This function returns the 64-bit unsigned quotient. If Divisor is 0, then ASSERT(). @param Dividend A 64-bit unsigned value. @param Divisor A 32-bit unsigned value. @return Dividend / Divisor. **/ UINT64 EFIAPI DivU64x32 ( IN UINT64 Dividend, IN UINT32 Divisor ); /** Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates a 32-bit unsigned remainder. This function divides the 64-bit unsigned value Dividend by the 32-bit unsigned value Divisor and generates a 32-bit remainder. This function returns the 32-bit unsigned remainder. If Divisor is 0, then ASSERT(). @param Dividend A 64-bit unsigned value. @param Divisor A 32-bit unsigned value. @return Dividend % Divisor. **/ UINT32 EFIAPI ModU64x32 ( IN UINT64 Dividend, 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. This function divides the 64-bit unsigned value Dividend by the 32-bit unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder is not NULL, then the 32-bit unsigned remainder is returned in Remainder. This function returns the 64-bit unsigned quotient. If Divisor is 0, then ASSERT(). @param Dividend A 64-bit unsigned value. @param Divisor A 32-bit unsigned value. @param Remainder A pointer to a 32-bit unsigned value. This parameter is optional and may be NULL. @return Dividend / Divisor. **/ UINT64 EFIAPI DivU64x32Remainder ( IN UINT64 Dividend, IN UINT32 Divisor, 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. This function divides the 64-bit unsigned value Dividend by the 64-bit unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder is not NULL, then the 64-bit unsigned remainder is returned in Remainder. This function returns the 64-bit unsigned quotient. If Divisor is 0, then ASSERT(). @param Dividend A 64-bit unsigned value. @param Divisor A 64-bit unsigned value. @param Remainder A pointer to a 64-bit unsigned value. This parameter is optional and may be NULL. @return Dividend / Divisor. **/ UINT64 EFIAPI DivU64x64Remainder ( IN UINT64 Dividend, IN UINT64 Divisor, 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. This function divides the 64-bit signed value Dividend by the 64-bit signed value Divisor and generates a 64-bit signed quotient. If Remainder is not 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. @param Divisor A 64-bit signed value. @param Remainder A pointer to a 64-bit signed value. This parameter is optional and may be NULL. @return Dividend / Divisor. **/ INT64 EFIAPI DivS64x64Remainder ( IN INT64 Dividend, IN INT64 Divisor, OUT INT64 *Remainder OPTIONAL ); /** Reads a 16-bit value from memory that may be unaligned. This function returns the 16-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 16-bit value that may be unaligned. @return The 16-bit value read from Buffer. **/ UINT16 EFIAPI ReadUnaligned16 ( IN CONST UINT16 *Buffer ); /** Writes a 16-bit value to memory that may be unaligned. This function writes the 16-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 16-bit value that may be unaligned. @param Value 16-bit value to write to Buffer. @return The 16-bit value to write to Buffer. **/ UINT16 EFIAPI WriteUnaligned16 ( OUT UINT16 *Buffer, IN UINT16 Value ); /** Reads a 24-bit value from memory that may be unaligned. This function returns the 24-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 24-bit value that may be unaligned. @return The 24-bit value read from Buffer. **/ UINT32 EFIAPI ReadUnaligned24 ( IN CONST UINT32 *Buffer ); /** Writes a 24-bit value to memory that may be unaligned. This function writes the 24-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 24-bit value that may be unaligned. @param Value 24-bit value to write to Buffer. @return The 24-bit value to write to Buffer. **/ UINT32 EFIAPI WriteUnaligned24 ( OUT UINT32 *Buffer, IN UINT32 Value ); /** Reads a 32-bit value from memory that may be unaligned. This function returns the 32-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 32-bit value that may be unaligned. @return The 32-bit value read from Buffer. **/ UINT32 EFIAPI ReadUnaligned32 ( IN CONST UINT32 *Buffer ); /** Writes a 32-bit value to memory that may be unaligned. This function writes the 32-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 32-bit value that may be unaligned. @param Value 32-bit value to write to Buffer. @return The 32-bit value to write to Buffer. **/ UINT32 EFIAPI WriteUnaligned32 ( OUT UINT32 *Buffer, IN UINT32 Value ); /** Reads a 64-bit value from memory that may be unaligned. This function returns the 64-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 64-bit value that may be unaligned. @return The 64-bit value read from Buffer. **/ UINT64 EFIAPI ReadUnaligned64 ( IN CONST UINT64 *Buffer ); /** Writes a 64-bit value to memory that may be unaligned. This function writes the 64-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault. If the Buffer is NULL, then ASSERT(). @param Buffer The pointer to a 64-bit value that may be unaligned. @param Value 64-bit value to write to Buffer. @return The 64-bit value to write to Buffer. **/ UINT64 EFIAPI WriteUnaligned64 ( OUT UINT64 *Buffer, IN UINT64 Value ); // // Bit Field Functions // /** Returns a bit field from an 8-bit value. Returns the bitfield specified by the StartBit and the EndBit from Operand. 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(). @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..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @return The bit field read. **/ UINT8 EFIAPI BitFieldRead8 ( IN UINT8 Operand, IN UINTN StartBit, IN UINTN EndBit ); /** Writes a bit field to an 8-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 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 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..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @param Value New value of the bit field. @return The new 8-bit value. **/ UINT8 EFIAPI BitFieldWrite8 ( IN UINT8 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 Value ); /** Reads a bit field from an 8-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 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 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..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @param OrData The value to OR with the read value from the value @return The new 8-bit value. **/ UINT8 EFIAPI BitFieldOr8 ( IN UINT8 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 OrData ); /** Reads a bit field from an 8-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 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(). @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..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @param AndData The value to AND with the read value from the value. @return The new 8-bit value. **/ UINT8 EFIAPI BitFieldAnd8 ( IN UINT8 Operand, IN UINTN StartBit, IN UINTN EndBit, 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 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. Range 0..7. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..7. @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 8-bit value. **/ UINT8 EFIAPI BitFieldAndThenOr8 ( IN UINT8 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 AndData, IN UINT8 OrData ); /** Returns a bit field from a 16-bit value. Returns the bitfield specified by the StartBit and the EndBit from Operand. 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(). @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..15. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..15. @return The bit field read. **/ UINT16 EFIAPI BitFieldRead16 ( IN UINT16 Operand, IN UINTN StartBit, IN UINTN EndBit ); /** Writes a bit field to a 16-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 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 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..15. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..15. @param Value New value of the bit field. @return The new 16-bit value. **/ UINT16 EFIAPI BitFieldWrite16 ( IN UINT16 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 Value ); /** Reads a bit field from a 16-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 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 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..15. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..15. @param OrData The value to OR with the read value from the value @return The new 16-bit value. **/ UINT16 EFIAPI BitFieldOr16 ( IN UINT16 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 OrData ); /** Reads a bit field from a 16-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 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(). @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..15. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..15. @param AndData The value to AND with the read value from the value @return The new 16-bit value. **/ UINT16 EFIAPI BitFieldAnd16 ( IN UINT16 Operand, IN UINTN StartBit, IN UINTN EndBit, 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 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. Range 0..15. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..15. @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 16-bit value. **/ UINT16 EFIAPI BitFieldAndThenOr16 ( IN UINT16 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 AndData, IN UINT16 OrData ); /** Returns a bit field from a 32-bit value. Returns the bitfield specified by the StartBit and the EndBit from Operand. 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(). @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. @return The bit field read. **/ UINT32 EFIAPI BitFieldRead32 ( IN UINT32 Operand, IN UINTN StartBit, IN UINTN EndBit ); /** Writes a bit field to a 32-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 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 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..31. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..31. @param Value New value of the bit field. @return The new 32-bit value. **/ UINT32 EFIAPI BitFieldWrite32 ( IN UINT32 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 Value ); /** Reads a bit field from a 32-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 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 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. @return The new 32-bit value. **/ UINT32 EFIAPI BitFieldOr32 ( IN UINT32 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 OrData ); /** Reads a bit field from a 32-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 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(). @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 AndData The value to AND with the read value from the value @return The new 32-bit value. **/ UINT32 EFIAPI BitFieldAnd32 ( IN UINT32 Operand, IN UINTN StartBit, IN UINTN EndBit, 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 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. Range 0..31. @param EndBit The ordinal of the most significant bit in the bit field. Range 0..31. @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 32-bit value. **/ UINT32 EFIAPI BitFieldAndThenOr32 ( IN UINT32 Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData, IN UINT32 OrData ); /** Returns a bit field from a 64-bit value. Returns the bitfield specified by the StartBit and the EndBit from Operand. 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(). @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. @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 ); /** Computes and returns a 32-bit CRC for a data buffer. CRC32 value bases on ITU-T V.42. If Buffer is NULL, then ASSERT(). If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). @param[in] Buffer A pointer to the buffer on which the 32-bit CRC is to be computed. @param[in] Length The number of bytes in the buffer Data. @retval Crc32 The 32-bit CRC was computed for the data buffer. **/ UINT32 EFIAPI CalculateCrc32( IN VOID *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(). **/ RETURNS_TWICE 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 AsmWriteDcr ( IN UINT64 Value ); /** 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 Value The 64-bit value to write to IVA. @return The 64-bit value written to the IVA. **/ UINT64 EFIAPI AsmWriteIva ( IN UINT64 Value ); /** 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. @param Value The 64-bit value to write to PTA. @return The 64-bit value written to the PTA. **/ UINT64 EFIAPI AsmWritePta ( IN UINT64 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 AsmReadLid ( VOID ); /** 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. @return The current value of IVR. **/ UINT64 EFIAPI AsmReadIvr ( VOID ); /** 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 AsmReadTpr ( VOID ); /** 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. @return The current value of IRR0. **/ UINT64 EFIAPI AsmReadIrr0 ( VOID ); /** 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 AsmReadIrr1 ( VOID ); /** 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. @return The current value of IRR2. **/ UINT64 EFIAPI AsmReadIrr2 ( VOID ); /** 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. @return The current value of IRR3. **/ UINT64 EFIAPI AsmReadIrr3 ( VOID ); /** 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 The current value of PMV. **/ UINT64 EFIAPI AsmReadPmv ( VOID ); /** 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. @return The current value of CMCV. **/ UINT64 EFIAPI AsmReadCmcv ( VOID ); /** 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 The current value of LRR0. **/ UINT64 EFIAPI AsmReadLrr0 ( VOID ); /** 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. @return The current value of LRR1. **/ 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 Value The 64-bit value to write to LID. @return The 64-bit value written to the LID. **/ UINT64 EFIAPI AsmWriteLid ( IN UINT64 Value ); /** 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 Value The 64-bit value to write to TPR. @return The 64-bit value written to the TPR. **/ UINT64 EFIAPI AsmWriteTpr ( IN UINT64 Value ); /** 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 ); /** 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 The 64-bit value to write to PMV. @return The 64-bit value written to the PMV. **/ UINT64 EFIAPI AsmWritePmv ( IN UINT64 Value ); /** 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 The 64-bit value to write to CMCV. @return The 64-bit value written to the CMCV. **/ UINT64 EFIAPI AsmWriteCmcv ( IN UINT64 Value ); /** 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 The 64-bit value to write to LRR0. @return The 64-bit value written to the LRR0. **/ UINT64 EFIAPI AsmWriteLrr0 ( IN UINT64 Value ); /** 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 The 64-bit value to write to LRR1. @return The 64-bit value written to the LRR1. **/ UINT64 EFIAPI AsmWriteLrr1 ( IN UINT64 Value ); /** 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. @param Index The 8-bit Instruction Breakpoint Register index to read. @return The current value of Instruction Breakpoint Register specified by Index. **/ UINT64 EFIAPI AsmReadIbr ( IN UINT8 Index ); /** Reads the current value of Data Breakpoint Register (DBR). 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. **/ UINT64 EFIAPI AsmReadDbr ( IN UINT8 Index ); /** Reads the current value of Performance Monitor Configuration Register (PMC). 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 Index The 8-bit Performance Monitor Configuration Register index to read. @return The current value of Performance Monitor Configuration Register specified by Index. **/ UINT64 EFIAPI AsmReadPmc ( IN UINT8 Index ); /** Reads the current value of Performance Monitor Data Register (PMD). 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. @param Index The 8-bit Performance Monitor Data Register index to read. @return The current value of Performance Monitor Data Register specified by Index. **/ UINT64 EFIAPI AsmReadPmd ( IN UINT8 Index ); /** Writes the current value of 64-bit Instruction Breakpoint Register (IBR). 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. **/ UINT64 EFIAPI AsmWriteIbr ( IN UINT8 Index, IN UINT64 Value ); /** Writes the current value of 64-bit Data Breakpoint Register (DBR). 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. **/ UINT64 EFIAPI AsmWriteDbr ( IN UINT8 Index, IN UINT64 Value ); /** Writes the current value of 64-bit Performance Monitor Configuration Register (PMC). 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. @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. **/ UINT64 EFIAPI AsmWritePmc ( IN UINT8 Index, IN UINT64 Value ); /** Writes the current value of 64-bit Performance Monitor Data Register (PMD). 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. **/ UINT64 EFIAPI AsmWritePmd ( IN UINT8 Index, IN UINT64 Value ); /** Reads the current value of 64-bit Global Pointer (GP). Reads and returns the current value of GP. This function is only available on Itanium processors. @return The current value of GP. **/ UINT64 EFIAPI AsmReadGp ( VOID ); /** Write the current value of 64-bit Global Pointer (GP). 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 Value The 64-bit value to write to GP. @return The 64-bit value written to the GP. **/ UINT64 EFIAPI AsmWriteGp ( IN UINT64 Value ); /** Reads the current value of 64-bit Stack Pointer (SP). Reads and returns the current value of SP. This function is only available on Itanium processors. @return The current value of SP. **/ UINT64 EFIAPI AsmReadSp ( VOID ); /// /// 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. **/ UINT64 EFIAPI 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 ); /** 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. @return The current value of the Machine Specific Register specified by Index. **/ UINT64 EFIAPI AsmReadMsr ( IN UINT8 Index ); /** Writes the current value of a Machine Specific Register (MSR). Writes Value to the Machine Specific Register specified by Index. Value is returned. No parameter checking is performed on Index, and if the Index value is beyond the implemented MSR register range, a Reserved Register/Field fault may occur. The caller must either guarantee that Index is valid, or the caller must set up fault handlers to catch the faults. This function is only available on Itanium processors. @param Index The 8-bit Machine Specific Register index to write. @param Value The 64-bit value to write to the Machine Specific Register. @return The 64-bit value to write to the Machine Specific Register. **/ UINT64 EFIAPI AsmWriteMsr ( IN UINT8 Index, IN UINT64 Value ); /** Determines if the CPU is currently executing in virtual, physical, or mixed mode. 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. **/ INT64 EFIAPI AsmCpuVirtual ( VOID ); /** Makes a PAL procedure call. 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. **/ PAL_CALL_RETURN EFIAPI AsmPalCall ( IN UINT64 PalEntryPoint, IN UINT64 Index, IN UINT64 Arg2, IN UINT64 Arg3, IN UINT64 Arg4 ); #endif #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. } 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. /// 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. } 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. /// 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. } 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. /// 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; ///< Reserved. } Bits; UINTN UintN; } IA32_CR4; /// /// 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 #define IA32_IDT_GATE_TYPE_TRAP_16 0x87 #define IA32_IDT_GATE_TYPE_INTERRUPT_32 0x8E #define IA32_IDT_GATE_TYPE_TRAP_32 0x8F #define IA32_GDT_TYPE_TSS 0x9 #define IA32_GDT_ALIGNMENT 8 #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. } Bits; UINT64 Uint64; } IA32_IDT_GATE_DESCRIPTOR; #pragma pack (1) // // IA32 Task-State Segment Definition // typedef struct { UINT16 PreviousTaskLink; UINT16 Reserved_2; UINT32 ESP0; UINT16 SS0; UINT16 Reserved_10; UINT32 ESP1; UINT16 SS1; UINT16 Reserved_18; UINT32 ESP2; UINT16 SS2; UINT16 Reserved_26; UINT32 CR3; UINT32 EIP; UINT32 EFLAGS; UINT32 EAX; UINT32 ECX; UINT32 EDX; UINT32 EBX; UINT32 ESP; UINT32 EBP; UINT32 ESI; UINT32 EDI; UINT16 ES; UINT16 Reserved_74; UINT16 CS; UINT16 Reserved_78; UINT16 SS; UINT16 Reserved_82; UINT16 DS; UINT16 Reserved_86; UINT16 FS; UINT16 Reserved_90; UINT16 GS; UINT16 Reserved_94; UINT16 LDTSegmentSelector; UINT16 Reserved_98; UINT16 T; UINT16 IOMapBaseAddress; } IA32_TASK_STATE_SEGMENT; typedef union { struct { UINT32 LimitLow:16; ///< Segment Limit 15..00 UINT32 BaseLow:16; ///< Base Address 15..00 UINT32 BaseMid:8; ///< Base Address 23..16 UINT32 Type:4; ///< Type (1 0 B 1) UINT32 Reserved_43:1; ///< 0 UINT32 DPL:2; ///< Descriptor Privilege Level UINT32 P:1; ///< Segment Present UINT32 LimitHigh:4; ///< Segment Limit 19..16 UINT32 AVL:1; ///< Available for use by system software UINT32 Reserved_52:2; ///< 0 0 UINT32 G:1; ///< Granularity UINT32 BaseHigh:8; ///< Base Address 31..24 } Bits; UINT64 Uint64; } IA32_TSS_DESCRIPTOR; #pragma pack () #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; #pragma pack (1) // // IA32 Task-State Segment Definition // typedef struct { UINT32 Reserved_0; UINT64 RSP0; UINT64 RSP1; UINT64 RSP2; UINT64 Reserved_28; UINT64 IST[7]; UINT64 Reserved_92; UINT16 Reserved_100; UINT16 IOMapBaseAddress; } IA32_TASK_STATE_SEGMENT; typedef union { struct { UINT32 LimitLow:16; ///< Segment Limit 15..00 UINT32 BaseLow:16; ///< Base Address 15..00 UINT32 BaseMidl:8; ///< Base Address 23..16 UINT32 Type:4; ///< Type (1 0 B 1) UINT32 Reserved_43:1; ///< 0 UINT32 DPL:2; ///< Descriptor Privilege Level UINT32 P:1; ///< Segment Present UINT32 LimitHigh:4; ///< Segment Limit 19..16 UINT32 AVL:1; ///< Available for use by system software UINT32 Reserved_52:2; ///< 0 0 UINT32 G:1; ///< Granularity UINT32 BaseMidh:8; ///< Base Address 31..24 UINT32 BaseHigh:32; ///< Base Address 63..32 UINT32 Reserved_96:32; ///< Reserved } Bits; struct { UINT64 Uint64; UINT64 Uint64_1; } Uint128; } IA32_TSS_DESCRIPTOR; #pragma pack () #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. /// typedef struct { UINT32 Reserved1; UINT32 Reserved2; UINT32 Reserved3; UINT32 Reserved4; UINT8 BL; UINT8 BH; UINT16 Reserved5; UINT8 DL; UINT8 DH; UINT16 Reserved6; UINT8 CL; UINT8 CH; UINT16 Reserved7; UINT8 AL; UINT8 AH; UINT16 Reserved8; } IA32_BYTE_REGS; typedef struct { UINT16 DI; UINT16 Reserved1; UINT16 SI; UINT16 Reserved2; UINT16 BP; UINT16 Reserved3; UINT16 SP; UINT16 Reserved4; UINT16 BX; UINT16 Reserved5; UINT16 DX; UINT16 Reserved6; UINT16 CX; UINT16 Reserved7; UINT16 AX; UINT16 Reserved8; } IA32_WORD_REGS; typedef struct { UINT32 EDI; UINT32 ESI; UINT32 EBP; UINT32 ESP; UINT32 EBX; UINT32 EDX; UINT32 ECX; UINT32 EAX; UINT16 DS; UINT16 ES; UINT16 FS; UINT16 GS; IA32_EFLAGS32 EFLAGS; UINT32 Eip; UINT16 CS; UINT16 SS; } IA32_DWORD_REGS; typedef union { IA32_DWORD_REGS E; IA32_WORD_REGS X; IA32_BYTE_REGS H; } IA32_REGISTER_SET; /// /// Byte packed structure for an 16-bit real mode thunks. /// typedef struct { IA32_REGISTER_SET *RealModeState; VOID *RealModeBuffer; UINT32 RealModeBufferSize; UINT32 ThunkAttributes; } THUNK_CONTEXT; #define THUNK_ATTRIBUTE_BIG_REAL_MODE 0x00000001 #define THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 0x00000002 #define THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL 0x00000004 /** Retrieves CPUID information. Executes the CPUID instruction with EAX set to the value specified by Index. This function always returns Index. If Eax is not NULL, then the value of EAX after CPUID is returned in Eax. 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. @param Index The 32-bit value to load into EAX prior to invoking the CPUID instruction. @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 The pointer to the 32-bit EBX value returned by the CPUID instruction. This is an optional parameter that may be NULL. @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 The pointer to the 32-bit EDX value returned by the CPUID instruction. This is an optional parameter that may be NULL. @return Index. **/ UINT32 EFIAPI AsmCpuid ( IN UINT32 Index, OUT UINT32 *Eax, OPTIONAL OUT UINT32 *Ebx, OPTIONAL OUT UINT32 *Ecx, OPTIONAL OUT UINT32 *Edx OPTIONAL ); /** Retrieves CPUID information using an extended leaf identifier. Executes the CPUID instruction with EAX set to the value specified by Index and ECX set to the value specified by SubIndex. This function always returns Index. This function is only available on IA-32 and x64. If Eax is not NULL, then the value of EAX after CPUID is returned in Eax. 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. @param Index The 32-bit value to load into EAX prior to invoking the CPUID instruction. @param SubIndex The 32-bit value to load into ECX prior to invoking the CPUID instruction. @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 The pointer to the 32-bit EBX value returned by the CPUID instruction. This is an optional parameter that may be NULL. @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 The pointer to the 32-bit EDX value returned by the CPUID instruction. This is an optional parameter that may be NULL. @return Index. **/ UINT32 EFIAPI AsmCpuidEx ( IN UINT32 Index, IN UINT32 SubIndex, OUT UINT32 *Eax, OPTIONAL OUT UINT32 *Ebx, OPTIONAL OUT UINT32 *Ecx, OPTIONAL 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). Reads and returns the lower 32-bits of the MSR specified by Index. No parameter checking is performed on Index, and some Index values may cause CPU exceptions. The caller must either guarantee that Index is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to read. @return The lower 32 bits of the MSR identified by Index. **/ UINT32 EFIAPI AsmReadMsr32 ( IN UINT32 Index ); /** 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. @param Index The 32-bit MSR index to write. @param Value The 32-bit value to write to the MSR. @return Value **/ UINT32 EFIAPI AsmWriteMsr32 ( IN UINT32 Index, IN UINT32 Value ); /** Reads a 64-bit MSR, performs a bitwise OR on the lower 32-bits, and writes the result back to the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise OR between the lower 32-bits of the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR is returned. No parameter checking is performed on Index or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param OrData The value to OR with the read value from the MSR. @return The lower 32-bit value written to the MSR. **/ UINT32 EFIAPI AsmMsrOr32 ( IN UINT32 Index, 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. Reads the 64-bit MSR specified by Index, performs a bitwise AND between the lower 32-bits of the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR is returned. No parameter checking is performed on Index or AndData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and AndData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param AndData The value to AND with the read value from the MSR. @return The lower 32-bit value written to the MSR. **/ UINT32 EFIAPI AsmMsrAnd32 ( IN UINT32 Index, IN UINT32 AndData ); /** Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise OR on the lower 32-bits, and writes the result back to the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND between the lower 32-bits of the read result and the value specified by AndData preserving the upper 32-bits, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 64-bit MSR specified by Address. The lower 32-bits of the value written to the MSR is returned. No parameter checking is performed on Index, AndData, or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index, AndData, and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param AndData The value to AND with the read value from the MSR. @param OrData The value to OR with the result of the AND operation. @return The lower 32-bit value written to the MSR. **/ UINT32 EFIAPI AsmMsrAndThenOr32 ( IN UINT32 Index, IN UINT32 AndData, IN UINT32 OrData ); /** Reads a bit field of an MSR. Reads the bit field in the lower 32-bits of a 64-bit MSR. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned. The caller must either guarantee that Index is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). @param Index The 32-bit MSR index to read. @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. @return The bit field read from the MSR. **/ UINT32 EFIAPI AsmMsrBitFieldRead32 ( IN UINT32 Index, IN UINTN StartBit, 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 field is specified by the StartBit and the EndBit. All other bits in the destination MSR are preserved. The lower 32-bits of the MSR written is returned. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 Value New value of the bit field. @return The lower 32-bit of the value written to the MSR. **/ UINT32 EFIAPI AsmMsrBitFieldWrite32 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, 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 OR between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR are returned. Extra left bits in OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 MSR. @return The lower 32-bit of the value written to the MSR. **/ UINT32 EFIAPI AsmMsrBitFieldOr32 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 OrData ); /** Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the result back to the bit field in the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR are returned. Extra left bits in AndData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 AndData The value to AND with the read value from the MSR. @return The lower 32-bit of the value written to the MSR. **/ UINT32 EFIAPI AsmMsrBitFieldAnd32 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData ); /** Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The lower 32-bits of the value written to the MSR are returned. Extra left bits in both AndData and OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 AndData The value to AND with the read value from the MSR. @param OrData The value to OR with the result of the AND operation. @return The lower 32-bit of the value written to the MSR. **/ UINT32 EFIAPI AsmMsrBitFieldAndThenOr32 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData, IN UINT32 OrData ); /** Returns a 64-bit Machine Specific Register(MSR). Reads and returns the 64-bit MSR specified by Index. No parameter checking is performed on Index, and some Index values may cause CPU exceptions. The caller must either guarantee that Index is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to read. @return The value of the MSR identified by Index. **/ UINT64 EFIAPI AsmReadMsr64 ( IN UINT32 Index ); /** Writes a 64-bit value to a Machine Specific Register(MSR), and returns the value. Writes the 64-bit value specified by Value to the MSR specified by Index. The 64-bit value written to the MSR is returned. No parameter checking is performed on Index or Value, and some of these may cause CPU exceptions. The caller must either guarantee that Index and Value are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param Value The 64-bit value to write to the MSR. @return Value **/ UINT64 EFIAPI AsmWriteMsr64 ( IN UINT32 Index, IN UINT64 Value ); /** Reads a 64-bit MSR, performs a bitwise OR, and writes the result back to the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. No parameter checking is performed on Index or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param OrData The value to OR with the read value from the MSR. @return The value written back to the MSR. **/ UINT64 EFIAPI AsmMsrOr64 ( IN UINT32 Index, IN UINT64 OrData ); /** Reads a 64-bit MSR, performs a bitwise AND, and writes the result back to the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. No parameter checking is performed on Index or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param AndData The value to AND with the read value from the MSR. @return The value written back to the MSR. **/ UINT64 EFIAPI AsmMsrAnd64 ( IN UINT32 Index, IN UINT64 AndData ); /** Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND between read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. No parameter checking is performed on Index, AndData, or OrData, and some of these may cause CPU exceptions. The caller must either guarantee that Index, AndData, and OrData are valid, or the caller must establish proper exception handlers. This function is only available on IA-32 and x64. @param Index The 32-bit MSR index to write. @param AndData The value to AND with the read value from the MSR. @param OrData The value to OR with the result of the AND operation. @return The value written back to the MSR. **/ UINT64 EFIAPI AsmMsrAndThenOr64 ( IN UINT32 Index, IN UINT64 AndData, IN UINT64 OrData ); /** Reads a bit field of an MSR. Reads the bit field in the 64-bit MSR. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned. The caller must either guarantee that Index is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). @param Index The 32-bit MSR index to read. @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. @return The value read from the MSR. **/ UINT64 EFIAPI AsmMsrBitFieldRead64 ( IN UINT32 Index, IN UINTN StartBit, 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. 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. 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 value written back to the MSR. **/ UINT64 EFIAPI AsmMsrBitFieldWrite64 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 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 OR between the read result and the value specified by OrData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. Extra left bits in OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 bit field. @return The value written back to the MSR. **/ UINT64 EFIAPI AsmMsrBitFieldOr64 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 OrData ); /** Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the result back to the bit field in the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. Extra left bits in AndData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 bit field. @return The value written back to the MSR. **/ UINT64 EFIAPI AsmMsrBitFieldAnd64 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 AndData ); /** Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 64-bit MSR. Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 64-bit MSR specified by Index. The value written to the MSR is returned. Extra left bits in both AndData and OrData are stripped. The caller must either guarantee that Index and the data written is valid, or the caller must set up exception handlers to catch the exceptions. This function is only available on IA-32 and x64. If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). @param Index The 32-bit MSR index to write. @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 bit field. @param OrData The value to OR with the result of the AND operation. @return The value written back to the MSR. **/ UINT64 EFIAPI AsmMsrBitFieldAndThenOr64 ( IN UINT32 Index, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 AndData, 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. @return EFLAGS on IA-32 or RFLAGS on x64. **/ UINTN EFIAPI 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. @return The value of the Control Register 0 (CR0). **/ UINTN EFIAPI 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. @return The value of the Control Register 2 (CR2). **/ UINTN EFIAPI 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. @return The value of the Control Register 3 (CR3). **/ UINTN EFIAPI 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. @return The value of the Control Register 4 (CR4). **/ UINTN EFIAPI 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. @param Cr0 The value to write to CR0. @return The value written to CR0. **/ UINTN EFIAPI 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. @param Cr2 The value to write to CR2. @return The value written to CR2. **/ UINTN EFIAPI 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. @param Cr3 The value to write to CR3. @return The value written to CR3. **/ UINTN EFIAPI 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. @param Cr4 The value to write to CR4. @return The value written to CR4. **/ UINTN EFIAPI 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. @return The value of Debug Register 0 (DR0). **/ UINTN EFIAPI 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. @return The value of Debug Register 1 (DR1). **/ UINTN EFIAPI 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. @return The value of Debug Register 2 (DR2). **/ UINTN EFIAPI 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. @return The value of Debug Register 3 (DR3). **/ UINTN EFIAPI 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. @return The value of Debug Register 4 (DR4). **/ UINTN EFIAPI 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. @return The value of Debug Register 5 (DR5). **/ UINTN EFIAPI 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. @return The value of Debug Register 6 (DR6). **/ UINTN EFIAPI 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. @return The value of Debug Register 7 (DR7). **/ UINTN EFIAPI 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. @param Dr0 The value to write to Dr0. @return The value written to Debug Register 0 (DR0). **/ UINTN EFIAPI 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. @param Dr1 The value to write to Dr1. @return The value written to Debug Register 1 (DR1). **/ UINTN EFIAPI 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. @param Dr2 The value to write to Dr2. @return The value written to Debug Register 2 (DR2). **/ UINTN EFIAPI 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. @param Dr3 The value to write to Dr3. @return The value written to Debug Register 3 (DR3). **/ UINTN EFIAPI 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. @param Dr4 The value to write to Dr4. @return The value written to Debug Register 4 (DR4). **/ UINTN EFIAPI 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. @param Dr5 The value to write to Dr5. @return The value written to Debug Register 5 (DR5). **/ UINTN EFIAPI 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. @param Dr6 The value to write to Dr6. @return The value written to Debug Register 6 (DR6). **/ UINTN EFIAPI 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. @param Dr7 The value to write to Dr7. @return The value written to Debug Register 7 (DR7). **/ UINTN EFIAPI 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. @return The current value of CS. **/ UINT16 EFIAPI 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. @return The current value of DS. **/ UINT16 EFIAPI 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. @return The current value of ES. **/ UINT16 EFIAPI 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. @return The current value of FS. **/ UINT16 EFIAPI 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. @return The current value of GS. **/ UINT16 EFIAPI 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. @return The current value of SS. **/ UINT16 EFIAPI 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. @return The current value of TR. **/ UINT16 EFIAPI 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. If Gdtr is NULL, then ASSERT(). @param Gdtr The pointer to a GDTR descriptor. **/ VOID EFIAPI 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. If Gdtr is NULL, then ASSERT(). @param Gdtr The pointer to a GDTR descriptor. **/ VOID EFIAPI AsmWriteGdtr ( IN CONST IA32_DESCRIPTOR *Gdtr ); /** 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. If Idtr is NULL, then ASSERT(). @param Idtr The pointer to a IDTR descriptor. **/ VOID EFIAPI AsmReadIdtr ( OUT IA32_DESCRIPTOR *Idtr ); /** 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. If Idtr is NULL, then ASSERT(). @param Idtr The pointer to a IDTR descriptor. **/ VOID EFIAPI 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. @return The current selector of LDT. **/ UINT16 EFIAPI AsmReadLdtr ( VOID ); /** 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. @param Ldtr 16-bit LDTR selector value. **/ VOID EFIAPI 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. If Buffer is NULL, then ASSERT(). If Buffer is not aligned on a 16-byte boundary, then ASSERT(). @param Buffer The pointer to a buffer to save the floating point/SSE/SSE2 context. **/ VOID EFIAPI 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. 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 The pointer to a buffer to save the floating point/SSE/SSE2 context. **/ VOID EFIAPI 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. @return The current value of MM0. **/ UINT64 EFIAPI 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. @return The current value of MM1. **/ UINT64 EFIAPI 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. @return The current value of MM2. **/ UINT64 EFIAPI 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. @return The current value of MM3. **/ UINT64 EFIAPI 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. @return The current value of MM4. **/ UINT64 EFIAPI 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. @return The current value of MM5. **/ UINT64 EFIAPI 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. @return The current value of MM6. **/ UINT64 EFIAPI 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. @return The current value of MM7. **/ UINT64 EFIAPI 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. @param Value The 64-bit value to write to MM0. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM1. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM2. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM3. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM4. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM5. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM6. **/ VOID EFIAPI 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. @param Value The 64-bit value to write to MM7. **/ VOID EFIAPI 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. @return The current value of TSC **/ UINT64 EFIAPI 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. @param Index The 32-bit Performance Counter index to read. @return The value of the PMC specified by Index. **/ UINT64 EFIAPI AsmReadPmc ( IN UINT32 Index ); /** Sets up a monitor buffer that is used by AsmMwait(). Executes a MONITOR instruction with the register state specified by Eax, Ecx and Edx. Returns Eax. This function is only available on IA-32 and x64. @param Eax The value to load into EAX or RAX before executing the MONITOR instruction. @param Ecx The value to load into ECX or RCX before executing the MONITOR instruction. @param Edx The value to load into EDX or RDX before executing the MONITOR instruction. @return Eax **/ UINTN EFIAPI AsmMonitor ( IN UINTN Eax, IN UINTN Ecx, IN UINTN Edx ); /** Executes an MWAIT instruction. Executes an MWAIT instruction with the register state specified by Eax and Ecx. Returns Eax. This function is only available on IA-32 and x64. @param Eax The value to load into EAX or RAX before executing the MONITOR instruction. @param Ecx The value to load into ECX or RCX before executing the MONITOR instruction. @return Eax **/ UINTN EFIAPI AsmMwait ( IN UINTN Eax, IN UINTN Ecx ); /** Executes a WBINVD instruction. Executes a WBINVD instruction. This function is only available on IA-32 and x64. **/ VOID EFIAPI AsmWbinvd ( VOID ); /** Executes a INVD instruction. Executes a INVD instruction. This function is only available on IA-32 and x64. **/ VOID EFIAPI 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. @param LinearAddress The address of the cache line to flush. If the CPU is in a physical addressing mode, then LinearAddress is a physical address. If the CPU is in a virtual addressing mode, then LinearAddress is a virtual address. @return LinearAddress. **/ VOID * EFIAPI AsmFlushCacheLine ( IN VOID *LinearAddress ); /** Enables the 32-bit paging mode on the CPU. Enables the 32-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables must be properly initialized prior to calling this service. This function assumes the current execution mode is 32-bit protected mode. This function is only available on IA-32. After the 32-bit paging mode is enabled, 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 may be NULL. The function EntryPoint must never return. If the current execution mode is not 32-bit protected mode, then ASSERT(). If EntryPoint is NULL, then ASSERT(). If NewStack is NULL, then ASSERT(). There are a number of constraints that must be followed before calling this function: 1) Interrupts must be disabled. 2) The caller must be in 32-bit protected mode with flat descriptors. This means all descriptors must have a base of 0 and a limit of 4GB. 3) CR0 and CR4 must be compatible with 32-bit protected mode with flat descriptors. 4) CR3 must point to valid page tables that will be used once the transition is complete, and those page tables must guarantee that the pages for this function and the stack are identity mapped. @param EntryPoint A pointer to function to call with the new stack after paging is enabled. @param Context1 A pointer to the context to pass into the EntryPoint function as the first parameter after paging is enabled. @param Context2 A pointer to the context to pass into the EntryPoint function as the second parameter after paging is enabled. @param NewStack A pointer to the new stack to use for the EntryPoint function after paging is enabled. **/ VOID EFIAPI AsmEnablePaging32 ( IN SWITCH_STACK_ENTRY_POINT EntryPoint, IN VOID *Context1, OPTIONAL IN VOID *Context2, OPTIONAL IN VOID *NewStack ); /** Disables the 32-bit paging mode on the CPU. Disables the 32-bit paging mode on the CPU and returns to 32-bit protected mode. This function assumes the current execution mode is 32-paged protected mode. This function is only available on IA-32. After the 32-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 may be NULL. The function EntryPoint must never return. If the current execution mode is not 32-bit paged mode, then ASSERT(). If EntryPoint is NULL, then ASSERT(). If NewStack is NULL, then ASSERT(). There are a number of constraints that must be followed before calling this function: 1) Interrupts must be disabled. 2) The caller must be in 32-bit paged mode. 3) CR0, CR3, and CR4 must be compatible with 32-bit paged mode. 4) CR3 must point to valid page tables that guarantee that the pages for this function and the stack are identity mapped. @param EntryPoint A pointer to function to call with the new stack after paging is disabled. @param Context1 A pointer to the context to pass into the EntryPoint function as the first parameter after paging is disabled. @param Context2 A pointer to the context to pass into the EntryPoint function as the second parameter after paging is disabled. @param NewStack A pointer to the new stack to use for the EntryPoint function after paging is disabled. **/ VOID EFIAPI AsmDisablePaging32 ( IN SWITCH_STACK_ENTRY_POINT EntryPoint, IN VOID *Context1, OPTIONAL IN VOID *Context2, OPTIONAL IN VOID *NewStack ); /** Enables the 64-bit paging mode on the CPU. Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables must be properly initialized prior to calling this service. This function assumes the current execution mode is 32-bit protected mode with flat descriptors. This function is only available on IA-32. After the 64-bit paging mode is enabled, 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 may be 0. The function EntryPoint must never return. If the current execution mode is not 32-bit protected mode with flat descriptors, then ASSERT(). If EntryPoint is 0, then ASSERT(). If NewStack is 0, then ASSERT(). @param Cs The 16-bit selector to load in the CS before EntryPoint is called. The descriptor in the GDT that this selector references must be setup for long mode. @param EntryPoint The 64-bit virtual address of the function to call with the new stack after paging is enabled. @param Context1 The 64-bit virtual address of the context to pass into the EntryPoint function as the first parameter after paging is enabled. @param Context2 The 64-bit virtual address of the context to pass into the EntryPoint function as the second parameter after paging is enabled. @param NewStack The 64-bit virtual address of the new stack to use for the EntryPoint function after paging is enabled. **/ VOID EFIAPI AsmEnablePaging64 ( 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 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 may be 0. The function EntryPoint must never return. If the current execution mode is not 64-bit paged mode, then ASSERT(). If EntryPoint is 0, then ASSERT(). If NewStack is 0, then ASSERT(). @param Cs The 16-bit selector to load in the CS before EntryPoint is called. The descriptor in the GDT that this selector references must be setup for 32-bit protected mode. @param EntryPoint The 64-bit virtual address of the function to call with the new stack after paging is disabled. @param Context1 The 64-bit virtual address of the context to pass into the EntryPoint function as the first parameter after paging is disabled. @param Context2 The 64-bit virtual address of the context to pass into the EntryPoint function as the second parameter after paging is disabled. @param NewStack The 64-bit virtual address of the new stack to use for the EntryPoint function after paging is disabled. **/ VOID EFIAPI AsmDisablePaging64 ( IN UINT16 Cs, IN UINT32 EntryPoint, IN UINT32 Context1, OPTIONAL IN UINT32 Context2, OPTIONAL IN UINT32 NewStack ); // // 16-bit thunking services // /** Retrieves the properties for 16-bit thunk functions. Computes the size of the buffer and stack below 1MB required to use the AsmPrepareThunk16(), AsmThunk16() and AsmPrepareAndThunk16() functions. This buffer size is returned in RealModeBufferSize, and the stack size is returned 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(). @param RealModeBufferSize A pointer to the size of the buffer below 1MB required to use the 16-bit thunk functions. @param ExtraStackSize A pointer to the extra size of stack below 1MB that the 16-bit thunk functions require for temporary storage in the transition to and from 16-bit real mode. **/ VOID EFIAPI AsmGetThunk16Properties ( OUT UINT32 *RealModeBufferSize, 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(). @param ThunkContext A pointer to the context structure that describes the 16-bit real mode code to call. **/ VOID EFIAPI AsmPrepareThunk16 ( 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. 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. **/ VOID EFIAPI 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. 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. If the caller only need to perform a single 16-bit real mode thunk, then this service should be used. If the caller intends to make more than one 16-bit 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. 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. **/ VOID EFIAPI AsmPrepareAndThunk16 ( IN OUT THUNK_CONTEXT *ThunkContext ); /** Generates a 16-bit random number through RDRAND instruction. if Rand is NULL, then ASSERT(). @param[out] Rand Buffer pointer to store the random result. @retval TRUE RDRAND call was successful. @retval FALSE Failed attempts to call RDRAND. **/ BOOLEAN EFIAPI AsmRdRand16 ( OUT UINT16 *Rand ); /** Generates a 32-bit random number through RDRAND instruction. if Rand is NULL, then ASSERT(). @param[out] Rand Buffer pointer to store the random result. @retval TRUE RDRAND call was successful. @retval FALSE Failed attempts to call RDRAND. **/ BOOLEAN EFIAPI AsmRdRand32 ( OUT UINT32 *Rand ); /** Generates a 64-bit random number through RDRAND instruction. if Rand is NULL, then ASSERT(). @param[out] Rand Buffer pointer to store the random result. @retval TRUE RDRAND call was successful. @retval FALSE Failed attempts to call RDRAND. **/ BOOLEAN EFIAPI AsmRdRand64 ( OUT UINT64 *Rand ); /** Load given selector into TR register. @param[in] Selector Task segment selector **/ VOID EFIAPI AsmWriteTr ( IN UINT16 Selector ); #endif #endif