diff options
Diffstat (limited to 'Cryptlib/Library')
| -rw-r--r-- | Cryptlib/Library/#BaseLib.h# | 7201 | ||||
| -rw-r--r-- | Cryptlib/Library/BaseCryptLib.h | 1927 | ||||
| -rw-r--r-- | Cryptlib/Library/BaseLib.h | 2 | ||||
| -rw-r--r-- | Cryptlib/Library/BaseMemoryLib.h | 0 | ||||
| -rw-r--r-- | Cryptlib/Library/DebugLib.h | 0 | ||||
| -rw-r--r-- | Cryptlib/Library/MemoryAllocationLib.h | 0 |
6 files changed, 9130 insertions, 0 deletions
diff --git a/Cryptlib/Library/#BaseLib.h# b/Cryptlib/Library/#BaseLib.h# new file mode 100644 index 00000000..69fbdb3c --- /dev/null +++ b/Cryptlib/Library/#BaseLib.h# @@ -0,0 +1,7201 @@ +#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) + +// +// String Services +// + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 + ); + +/** + 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 ASSERT(). + + If PcdMaximumUnicodeStringLength is not zero, and String contains + more than PcdMaximumUnicodeStringLength Unicode characters not including + the Null-terminator, then ASSERT(). + + @param String The pointer to a Null-terminated Unicode string. + + @retval Value translated from String. + +**/ +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 ASSERT(). + + If PcdMaximumUnicodeStringLength is not zero, and String contains + more than PcdMaximumUnicodeStringLength Unicode characters not including + the Null-terminator, then ASSERT(). + + @param String The pointer to a Null-terminated Unicode string. + + @retval Value translated from String. + +**/ +UINT64 +EFIAPI +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 ASSERT(). + + If PcdMaximumUnicodeStringLength is not zero, and String contains more than + PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, + then ASSERT(). + + @param String The pointer to a Null-terminated Unicode string. + + @retval Value translated from String. + +**/ +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 ASSERT(). + + If PcdMaximumUnicodeStringLength is not zero, and String contains more than + PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, + then ASSERT(). + + @param String The pointer to a Null-terminated Unicode string. + + @retval Value translated from String. + +**/ +UINT64 +EFIAPI +StrHexToUint64 ( + IN CONST CHAR16 *String + ); + +/** + Convert a Null-terminated Unicode string to a Null-terminated + ASCII string and returns the ASCII string. + + This function converts the content of the Unicode string Source + to the ASCII string Destination by copying the lower 8 bits of + each Unicode character. It returns Destination. + + The caller is responsible to make sure Destination points to a buffer with size + equal or greater than ((StrLen (Source) + 1) * sizeof (CHAR8)) in bytes. + + If any Unicode characters in Source contain non-zero value in + the upper 8 bits, then ASSERT(). + + If Destination is NULL, then ASSERT(). + If Source is NULL, then ASSERT(). + If Source is not aligned on a 16-bit boundary, then ASSERT(). + If Source and Destination overlap, then ASSERT(). + + If PcdMaximumUnicodeStringLength is not zero, and Source contains + more than PcdMaximumUnicodeStringLength Unicode characters not including + the Null-terminator, then ASSERT(). + + If PcdMaximumAsciiStringLength is not zero, and Source contains more + than PcdMaximumAsciiStringLength Unicode characters not including the + Null-terminator, then ASSERT(). + + @param Source The pointer to a Null-terminated Unicode string. + @param Destination The pointer to a Null-terminated ASCII string. + + @return Destination. + +**/ +CHAR8 * +EFIAPI +UnicodeStrToAsciiStr ( + IN CONST CHAR16 *Source, + OUT CHAR8 *Destination + ); + + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 + ); + + +/** + 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 ASSERT(). + If String is NULL, then ASSERT(). + If PcdMaximumAsciiStringLength is not zero, and String contains more than + PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator, + then ASSERT(). + + @param String The pointer to a Null-terminated ASCII string. + + @retval The value translated from String. + +**/ +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 ASSERT(). + If String is NULL, then ASSERT(). + If PcdMaximumAsciiStringLength is not zero, and String contains more than + PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator, + then ASSERT(). + + @param String The pointer to a Null-terminated ASCII string. + + @retval Value translated from String. + +**/ +UINT64 +EFIAPI +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 ASSERT(). + If String is NULL, then ASSERT(). + If PcdMaximumAsciiStringLength is not zero, + and String contains more than PcdMaximumAsciiStringLength ASCII characters not including + the Null-terminator, then ASSERT(). + + @param String The pointer to a Null-terminated ASCII string. + + @retval Value translated from String. + +**/ +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 ASSERT(). + If String is NULL, then ASSERT(). + If PcdMaximumAsciiStringLength is not zero, + and String contains more than PcdMaximumAsciiStringLength ASCII characters not including + the Null-terminator, then ASSERT(). + + @param String The pointer to a Null-terminated ASCII string. + + @retval Value translated from String. + +**/ +UINT64 +EFIAPI +AsciiStrHexToUint64 ( + IN CONST CHAR8 *String + ); + + +/** + Convert one Null-terminated ASCII string to a Null-terminated + Unicode string and returns the Unicode string. + + This function converts the contents of the ASCII string Source to the Unicode + string Destination, and returns Destination. The function terminates the + Unicode string Destination by appending a Null-terminator character at the end. + The caller is responsible to make sure Destination points to a buffer with size + equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes. + + If Destination is NULL, then ASSERT(). + If Destination is not aligned on a 16-bit boundary, then ASSERT(). + If Source is NULL, then ASSERT(). + If Source and Destination overlap, then ASSERT(). + If PcdMaximumAsciiStringLength is not zero, and Source contains more than + PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator, + then ASSERT(). + If PcdMaximumUnicodeStringLength is not zero, and Source contains more than + PcdMaximumUnicodeStringLength ASCII characters not including the + Null-terminator, then ASSERT(). + + @param Source The pointer to a Null-terminated ASCII string. + @param Destination The pointer to a Null-terminated Unicode string. + + @return Destination. + +**/ +CHAR16 * +EFIAPI +AsciiStrToUnicodeStr ( + IN CONST CHAR8 *Source, + OUT CHAR16 *Destination + ); + + +/** + Converts an 8-bit value to an 8-bit BCD value. + + Converts the 8-bit value specified by Value to BCD. The BCD value is + returned. + + If Value >= 100, then ASSERT(). + + @param Value The 8-bit value to convert to BCD. Range 0..99. + + @return The BCD value. + +**/ +UINT8 +EFIAPI +DecimalToBcd8 ( + IN UINT8 Value + ); + + +/** + Converts an 8-bit BCD value to an 8-bit value. + + Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit + value is returned. + + If Value >= 0xA0, then ASSERT(). + If (Value & 0x0F) >= 0x0A, then ASSERT(). + + @param Value The 8-bit BCD value to convert to an 8-bit value. + + @return The 8-bit value is returned. + +**/ +UINT8 +EFIAPI +BcdToDecimal8 ( + IN UINT8 Value + ); + + +// +// Linked List Functions and Macros +// + +/** + Initializes the head node of a doubly linked list that is declared as a + global variable in a module. + + Initializes the forward and backward links of a new linked list. After + initializing a linked list with this macro, the other linked list functions + may be used to add and remove nodes from the linked list. This macro results + in smaller executables by initializing the linked list in the data section, + instead if calling the InitializeListHead() function to perform the + equivalent operation. + + @param ListHead The head note of a list to initialize. + +**/ +#define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&(ListHead), &(ListHead)} + + +/** + Initializes the head node of a doubly linked list, and returns the pointer to + the head node of the doubly linked list. + + Initializes the forward and backward links of a new linked list. After + initializing a linked list with this function, the other linked list + functions may be used to add and remove nodes from the linked list. It is up + to the caller of this function to allocate the memory for ListHead. + + If ListHead is NULL, then ASSERT(). + + @param ListHead A pointer to the head node of a new doubly linked list. + + @return ListHead + +**/ +LIST_ENTRY * +EFIAPI +InitializeListHead ( + IN OUT LIST_ENTRY *ListHead + ); + + +/** + Adds a node to the beginning of a doubly linked list, and returns the pointer + to the head node of the doubly linked list. + + Adds the node Entry at the beginning of the doubly linked list denoted by + ListHead, and returns ListHead. + + If ListHead is NULL, then ASSERT(). + If Entry is NULL, then ASSERT(). + If ListHead was not initialized with INTIALIZE_LIST_HEAD_VARIABLE() or + InitializeListHead(), then ASSERT(). + If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number + of nodes in ListHead, including the ListHead node, is greater than or + 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 PcdMaximumLinkedListLenth 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 PcdMaximumLinkedListLenth is not zero, and the number of nodes + in List, including the List node, is greater than or equal to + PcdMaximumLinkedListLength, then ASSERT(). + + @param List A pointer to the head node of a doubly linked list. + + @return The first node of a doubly linked list. + @retval NULL The list is empty. + +**/ +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 PcdMaximumLinkedListLenth is not zero, and List contains more than + PcdMaximumLinkedListLenth 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 PcdMaximumLinkedListLenth is not zero, and List contains more than + PcdMaximumLinkedListLenth 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 PcdMaximumLinkedListLenth 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 PcdMaximumLinkedListLenth 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 PcdMaximumLinkedListLenth 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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @param Operand Operand on which to perform the bitfield operation. + @param StartBit The ordinal of the least significant bit in the bit field. + Range 0..63. + @param EndBit The ordinal of the most significant bit in the bit field. + Range 0..63. + @param AndData The value to AND with the read value from the value. + @param OrData The value to OR with the result of the AND operation. + + @return The new 64-bit value. + +**/ +UINT64 +EFIAPI +BitFieldAndThenOr64 ( + IN UINT64 Operand, + IN UINTN StartBit, + IN UINTN EndBit, + IN UINT64 AndData, + IN UINT64 OrData + ); + +// +// Base Library Checksum Functions +// + +/** + Returns the sum of all elements in a buffer in unit of UINT8. + During calculation, the carry bits are dropped. + + This function calculates the sum of all elements in a buffer + in unit of UINT8. The carry bits in result of addition are dropped. + The result is returned as UINT8. If Length is Zero, then Zero is + returned. + + If Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the sum operation. + @param Length The size, in bytes, of Buffer. + + @return Sum The sum of Buffer with carry bits dropped during additions. + +**/ +UINT8 +EFIAPI +CalculateSum8 ( + IN CONST UINT8 *Buffer, + IN UINTN Length + ); + + +/** + Returns the two's complement checksum of all elements in a buffer + of 8-bit values. + + This function first calculates the sum of the 8-bit values in the + buffer specified by Buffer and Length. The carry bits in the result + of addition are dropped. Then, the two's complement of the sum is + returned. If Length is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the checksum operation. + @param Length The size, in bytes, of Buffer. + + @return Checksum The two's complement checksum of Buffer. + +**/ +UINT8 +EFIAPI +CalculateCheckSum8 ( + IN CONST UINT8 *Buffer, + IN UINTN Length + ); + + +/** + Returns the sum of all elements in a buffer of 16-bit values. During + calculation, the carry bits are dropped. + + This function calculates the sum of the 16-bit values in the buffer + specified by Buffer and Length. The carry bits in result of addition are dropped. + The 16-bit result is returned. If Length is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Buffer is not aligned on a 16-bit boundary, then ASSERT(). + If Length is not aligned on a 16-bit boundary, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the sum operation. + @param Length The size, in bytes, of Buffer. + + @return Sum The sum of Buffer with carry bits dropped during additions. + +**/ +UINT16 +EFIAPI +CalculateSum16 ( + IN CONST UINT16 *Buffer, + IN UINTN Length + ); + + +/** + Returns the two's complement checksum of all elements in a buffer of + 16-bit values. + + This function first calculates the sum of the 16-bit values in the buffer + specified by Buffer and Length. The carry bits in the result of addition + are dropped. Then, the two's complement of the sum is returned. If Length + is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Buffer is not aligned on a 16-bit boundary, then ASSERT(). + If Length is not aligned on a 16-bit boundary, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the checksum operation. + @param Length The size, in bytes, of Buffer. + + @return Checksum The two's complement checksum of Buffer. + +**/ +UINT16 +EFIAPI +CalculateCheckSum16 ( + IN CONST UINT16 *Buffer, + IN UINTN Length + ); + + +/** + Returns the sum of all elements in a buffer of 32-bit values. During + calculation, the carry bits are dropped. + + This function calculates the sum of the 32-bit values in the buffer + specified by Buffer and Length. The carry bits in result of addition are dropped. + The 32-bit result is returned. If Length is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Buffer is not aligned on a 32-bit boundary, then ASSERT(). + If Length is not aligned on a 32-bit boundary, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the sum operation. + @param Length The size, in bytes, of Buffer. + + @return Sum The sum of Buffer with carry bits dropped during additions. + +**/ +UINT32 +EFIAPI +CalculateSum32 ( + IN CONST UINT32 *Buffer, + IN UINTN Length + ); + + +/** + Returns the two's complement checksum of all elements in a buffer of + 32-bit values. + + This function first calculates the sum of the 32-bit values in the buffer + specified by Buffer and Length. The carry bits in the result of addition + are dropped. Then, the two's complement of the sum is returned. If Length + is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Buffer is not aligned on a 32-bit boundary, then ASSERT(). + If Length is not aligned on a 32-bit boundary, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the checksum operation. + @param Length The size, in bytes, of Buffer. + + @return Checksum The two's complement checksum of Buffer. + +**/ +UINT32 +EFIAPI +CalculateCheckSum32 ( + IN CONST UINT32 *Buffer, + IN UINTN Length + ); + + +/** + Returns the sum of all elements in a buffer of 64-bit values. During + calculation, the carry bits are dropped. + + This function calculates the sum of the 64-bit values in the buffer + specified by Buffer and Length. The carry bits in result of addition are dropped. + The 64-bit result is returned. If Length is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Buffer is not aligned on a 64-bit boundary, then ASSERT(). + If Length is not aligned on a 64-bit boundary, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the sum operation. + @param Length The size, in bytes, of Buffer. + + @return Sum The sum of Buffer with carry bits dropped during additions. + +**/ +UINT64 +EFIAPI +CalculateSum64 ( + IN CONST UINT64 *Buffer, + IN UINTN Length + ); + + +/** + Returns the two's complement checksum of all elements in a buffer of + 64-bit values. + + This function first calculates the sum of the 64-bit values in the buffer + specified by Buffer and Length. The carry bits in the result of addition + are dropped. Then, the two's complement of the sum is returned. If Length + is 0, then 0 is returned. + + If Buffer is NULL, then ASSERT(). + If Buffer is not aligned on a 64-bit boundary, then ASSERT(). + If Length is not aligned on a 64-bit boundary, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to carry out the checksum operation. + @param Length The size, in bytes, of Buffer. + + @return Checksum The two's complement checksum of Buffer. + +**/ +UINT64 +EFIAPI +CalculateCheckSum64 ( + IN CONST UINT64 *Buffer, + IN UINTN Length + ); + + +// +// Base Library CPU Functions +// + +/** + Function entry point used when a stack switch is requested with SwitchStack() + + @param Context1 Context1 parameter passed into SwitchStack(). + @param Context2 Context2 parameter passed into SwitchStack(). + +**/ +typedef +VOID +(EFIAPI *SWITCH_STACK_ENTRY_POINT)( + IN VOID *Context1, OPTIONAL + IN VOID *Context2 OPTIONAL + ); + + +/** + Used to serialize load and store operations. + + All loads and stores that proceed calls to this function are guaranteed to be + globally visible when this function returns. + +**/ +VOID +EFIAPI +MemoryFence ( + VOID + ); + + +/** + Saves the current CPU context that can be restored with a call to LongJump() + and returns 0. + + Saves the current CPU context in the buffer specified by JumpBuffer and + returns 0. The initial call to SetJump() must always return 0. Subsequent + calls to LongJump() cause a non-zero value to be returned by SetJump(). + + If JumpBuffer is NULL, then ASSERT(). + For Itanium processors, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT(). + + NOTE: The structure BASE_LIBRARY_JUMP_BUFFER is CPU architecture specific. + The same structure must never be used for more than one CPU architecture context. + For example, a BASE_LIBRARY_JUMP_BUFFER allocated by an IA-32 module must never be used from an x64 module. + SetJump()/LongJump() is not currently supported for the EBC processor type. + + @param JumpBuffer A pointer to CPU context buffer. + + @retval 0 Indicates a return from SetJump(). + +**/ +UINTN +EFIAPI +SetJump ( + OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer + ); + + +/** + Restores the CPU context that was saved with SetJump(). + + Restores the CPU context from the buffer specified by JumpBuffer. This + function never returns to the caller. Instead is resumes execution based on + the state of JumpBuffer. + + If JumpBuffer is NULL, then ASSERT(). + For Itanium processors, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT(). + If Value is 0, then ASSERT(). + + @param JumpBuffer A pointer to CPU context buffer. + @param Value The value to return when the SetJump() context is + restored and must be non-zero. + +**/ +VOID +EFIAPI +LongJump ( + IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, + IN UINTN Value + ); + + +/** + Enables CPU interrupts. + +**/ +VOID +EFIAPI +EnableInterrupts ( + VOID + ); + + +/** + Disables CPU interrupts. + +**/ +VOID +EFIAPI +DisableInterrupts ( + VOID + ); + + +/** + Disables CPU interrupts and returns the interrupt state prior to the disable + operation. + + @retval TRUE CPU interrupts were enabled on entry to this call. + @retval FALSE CPU interrupts were disabled on entry to this call. + +**/ +BOOLEAN +EFIAPI +SaveAndDisableInterrupts ( + VOID + ); + + +/** + Enables CPU interrupts for the smallest window required to capture any + pending interrupts. + +**/ +VOID +EFIAPI +EnableDisableInterrupts ( + VOID + ); + + +/** + Retrieves the current CPU interrupt state. + + Returns TRUE if interrupts are currently enabled. Otherwise + returns FALSE. + + @retval TRUE CPU interrupts are enabled. + @retval FALSE CPU interrupts are disabled. + +**/ +BOOLEAN +EFIAPI +GetInterruptState ( + VOID + ); + + +/** + Set the current CPU interrupt state. + + Sets the current CPU interrupt state to the state specified by + InterruptState. If InterruptState is TRUE, then interrupts are enabled. If + InterruptState is FALSE, then interrupts are disabled. InterruptState is + returned. + + @param InterruptState TRUE if interrupts should enabled. FALSE if + interrupts should be disabled. + + @return InterruptState + +**/ +BOOLEAN +EFIAPI +SetInterruptState ( + IN BOOLEAN InterruptState + ); + + +/** + Requests CPU to pause for a short period of time. + + Requests CPU to pause for a short period of time. Typically used in MP + systems to prevent memory starvation while waiting for a spin lock. + +**/ +VOID +EFIAPI +CpuPause ( + VOID + ); + + +/** + Transfers control to a function starting with a new stack. + + Transfers control to the function specified by EntryPoint using the + new stack specified by NewStack and passing in the parameters specified + by Context1 and Context2. Context1 and Context2 are optional and may + be NULL. The function EntryPoint must never return. This function + supports a variable number of arguments following the NewStack parameter. + These additional arguments are ignored on IA-32, x64, and EBC architectures. + Itanium processors expect one additional parameter of type VOID * that specifies + the new backing store pointer. + + If EntryPoint is NULL, then ASSERT(). + If NewStack is NULL, then ASSERT(). + + @param EntryPoint A pointer to function to call with the new stack. + @param Context1 A pointer to the context to pass into the EntryPoint + function. + @param Context2 A pointer to the context to pass into the EntryPoint + function. + @param NewStack A pointer to the new stack to use for the EntryPoint + function. + @param ... This variable argument list is ignored for IA-32, x64, and + EBC architectures. For Itanium processors, this variable + argument list is expected to contain a single parameter of + type VOID * that specifies the new backing store pointer. + + +**/ +VOID +EFIAPI +SwitchStack ( + IN SWITCH_STACK_ENTRY_POINT EntryPoint, + IN VOID *Context1, OPTIONAL + IN VOID *Context2, OPTIONAL + IN VOID *NewStack, + ... + ); + + +/** + Generates a breakpoint on the CPU. + + Generates a breakpoint on the CPU. The breakpoint must be implemented such + that code can resume normal execution after the breakpoint. + +**/ +VOID +EFIAPI +CpuBreakpoint ( + VOID + ); + + +/** + Executes an infinite loop. + + Forces the CPU to execute an infinite loop. A debugger may be used to skip + past the loop and the code that follows the loop must execute properly. This + implies that the infinite loop must not cause the code that follow it to be + optimized away. + +**/ +VOID +EFIAPI +CpuDeadLoop ( + VOID + ); + +#if defined (MDE_CPU_IPF) + +/** + Flush a range of cache lines in the cache coherency domain of the calling + CPU. + + Flushes the cache lines specified by Address and Length. If Address is not aligned + on a cache line boundary, then entire cache line containing Address is flushed. + If Address + Length is not aligned on a cache line boundary, then the entire cache + line containing Address + Length - 1 is flushed. This function may choose to flush + the entire cache if that is more efficient than flushing the specified range. If + Length is 0, the no cache lines are flushed. Address is returned. + This function is only available on Itanium processors. + + If Length is greater than (MAX_ADDRESS - Address + 1), then ASSERT(). + + @param Address The base address of the instruction lines to invalidate. If + the CPU is in a physical addressing mode, then Address is a + physical address. If the CPU is in a virtual addressing mode, + then Address is a virtual address. + + @param Length The number of bytes to invalidate from the instruction cache. + + @return Address. + +**/ +VOID * +EFIAPI +AsmFlushCacheRange ( + IN VOID *Address, + IN UINTN Length + ); + + +/** + Executes an FC instruction. + Executes an FC instruction on the cache line specified by Address. + The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary). + An implementation may flush a larger region. This function is only available on Itanium processors. + + @param Address The Address of cache line to be flushed. + + @return The address of FC instruction executed. + +**/ +UINT64 +EFIAPI +AsmFc ( + IN UINT64 Address + ); + + +/** + Executes an FC.I instruction. + Executes an FC.I instruction on the cache line specified by Address. + The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary). + An implementation may flush a larger region. This function is only available on Itanium processors. + + @param Address The Address of cache line to be flushed. + + @return The address of the FC.I instruction executed. + +**/ +UINT64 +EFIAPI +AsmFci ( + IN UINT64 Address + ); + + +/** + Reads the current value of a Processor Identifier Register (CPUID). + + Reads and returns the current value of Processor Identifier Register specified by Index. + The Index of largest implemented CPUID (One less than the number of implemented CPUID + registers) is determined by CPUID [3] bits {7:0}. + No parameter checking is performed on Index. If the Index value is beyond the + implemented CPUID register range, a Reserved Register/Field fault may occur. The caller + must either guarantee that Index is valid, or the caller must set up fault handlers to + catch the faults. This function is only available on Itanium processors. + + @param Index The 8-bit Processor Identifier Register index to read. + + @return The current value of Processor Identifier Register specified by Index. + +**/ +UINT64 +EFIAPI +AsmReadCpuid ( + IN UINT8 Index + ); + + +/** + Reads the current value of 64-bit Processor Status Register (PSR). + This function is only available on Itanium processors. + + @return The current value of PSR. + +**/ +UINT64 +EFIAPI +AsmReadPsr ( + VOID + ); + + +/** + Writes the current value of 64-bit Processor Status Register (PSR). + + No parameter checking is performed on Value. All bits of Value corresponding to + reserved fields of PSR must be 0 or a Reserved Register/Field fault may occur. + The caller must either guarantee that Value is valid, or the caller must set up + fault handlers to catch the faults. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to PSR. + + @return The 64-bit value written to the PSR. + +**/ +UINT64 +EFIAPI +AsmWritePsr ( + IN UINT64 Value + ); + + +/** + Reads the current value of 64-bit Kernel Register #0 (KR0). + + Reads and returns the current value of KR0. + This function is only available on Itanium processors. + + @return The current value of KR0. + +**/ +UINT64 +EFIAPI +AsmReadKr0 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #1 (KR1). + + Reads and returns the current value of KR1. + This function is only available on Itanium processors. + + @return The current value of KR1. + +**/ +UINT64 +EFIAPI +AsmReadKr1 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #2 (KR2). + + Reads and returns the current value of KR2. + This function is only available on Itanium processors. + + @return The current value of KR2. + +**/ +UINT64 +EFIAPI +AsmReadKr2 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #3 (KR3). + + Reads and returns the current value of KR3. + This function is only available on Itanium processors. + + @return The current value of KR3. + +**/ +UINT64 +EFIAPI +AsmReadKr3 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #4 (KR4). + + Reads and returns the current value of KR4. + This function is only available on Itanium processors. + + @return The current value of KR4. + +**/ +UINT64 +EFIAPI +AsmReadKr4 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #5 (KR5). + + Reads and returns the current value of KR5. + This function is only available on Itanium processors. + + @return The current value of KR5. + +**/ +UINT64 +EFIAPI +AsmReadKr5 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #6 (KR6). + + Reads and returns the current value of KR6. + This function is only available on Itanium processors. + + @return The current value of KR6. + +**/ +UINT64 +EFIAPI +AsmReadKr6 ( + VOID + ); + + +/** + Reads the current value of 64-bit Kernel Register #7 (KR7). + + Reads and returns the current value of KR7. + This function is only available on Itanium processors. + + @return The current value of KR7. + +**/ +UINT64 +EFIAPI +AsmReadKr7 ( + VOID + ); + + +/** + Write the current value of 64-bit Kernel Register #0 (KR0). + + Writes the current value of KR0. The 64-bit value written to + the KR0 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR0. + + @return The 64-bit value written to the KR0. + +**/ +UINT64 +EFIAPI +AsmWriteKr0 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #1 (KR1). + + Writes the current value of KR1. The 64-bit value written to + the KR1 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR1. + + @return The 64-bit value written to the KR1. + +**/ +UINT64 +EFIAPI +AsmWriteKr1 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #2 (KR2). + + Writes the current value of KR2. The 64-bit value written to + the KR2 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR2. + + @return The 64-bit value written to the KR2. + +**/ +UINT64 +EFIAPI +AsmWriteKr2 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #3 (KR3). + + Writes the current value of KR3. The 64-bit value written to + the KR3 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR3. + + @return The 64-bit value written to the KR3. + +**/ +UINT64 +EFIAPI +AsmWriteKr3 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #4 (KR4). + + Writes the current value of KR4. The 64-bit value written to + the KR4 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR4. + + @return The 64-bit value written to the KR4. + +**/ +UINT64 +EFIAPI +AsmWriteKr4 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #5 (KR5). + + Writes the current value of KR5. The 64-bit value written to + the KR5 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR5. + + @return The 64-bit value written to the KR5. + +**/ +UINT64 +EFIAPI +AsmWriteKr5 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #6 (KR6). + + Writes the current value of KR6. The 64-bit value written to + the KR6 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR6. + + @return The 64-bit value written to the KR6. + +**/ +UINT64 +EFIAPI +AsmWriteKr6 ( + IN UINT64 Value + ); + + +/** + Write the current value of 64-bit Kernel Register #7 (KR7). + + Writes the current value of KR7. The 64-bit value written to + the KR7 is returned. This function is only available on Itanium processors. + + @param Value The 64-bit value to write to KR7. + + @return The 64-bit value written to the KR7. + +**/ +UINT64 +EFIAPI +AsmWriteKr7 ( + IN UINT64 Value + ); + + +/** + Reads the current value of Interval Timer Counter Register (ITC). + + Reads and returns the current value of ITC. + This function is only available on Itanium processors. + + @return The current value of ITC. + +**/ +UINT64 +EFIAPI +AsmReadItc ( + VOID + ); + + +/** + Reads the current value of Interval Timer Vector Register (ITV). + + Reads and returns the current value of ITV. + This function is only available on Itanium processors. + + @return The current value of ITV. + +**/ +UINT64 +EFIAPI +AsmReadItv ( + VOID + ); + + +/** + Reads the current value of Interval Timer Match Register (ITM). + + Reads and returns the current value of ITM. + This function is only available on Itanium processors. + + @return The current value of ITM. +**/ +UINT64 +EFIAPI +AsmReadItm ( + VOID + ); + + +/** + Writes the current value of 64-bit Interval Timer Counter Register (ITC). + + Writes the current value of ITC. The 64-bit value written to the ITC is returned. + This function is only available on Itanium processors. + + @param Value The 64-bit value to write to ITC. + + @return The 64-bit value written to the ITC. + +**/ +UINT64 +EFIAPI +AsmWriteItc ( + IN UINT64 Value + ); + + +/** + Writes the current value of 64-bit Interval Timer Match Register (ITM). + + Writes the current value of ITM. The 64-bit value written to the ITM is returned. + This function is only available on Itanium processors. + + @param Value The 64-bit value to write to ITM. + + @return The 64-bit value written to the ITM. + +**/ +UINT64 +EFIAPI +AsmWriteItm ( + IN UINT64 Value + ); + + +/** + Writes the current value of 64-bit Interval Timer Vector Register (ITV). + + Writes the current value of ITV. The 64-bit value written to the ITV is returned. + No parameter checking is performed on Value. All bits of Value corresponding to + reserved fields of ITV must be 0 or a Reserved Register/Field fault may occur. + The caller must either guarantee that Value is valid, or the caller must set up + fault handlers to catch the faults. + This function is only available on Itanium processors. + + @param Value The 64-bit value to write to ITV. + + @return The 64-bit value written to the ITV. + +**/ +UINT64 +EFIAPI +AsmWriteItv ( + IN UINT64 Value + ); + + +/** + Reads the current value of Default Control Register (DCR). + + Reads and returns the current value of DCR. This function is only available on Itanium processors. + + @return The current value of DCR. + +**/ +UINT64 +EFIAPI +AsmReadDcr ( + VOID + ); + + +/** + Reads the current value of Interruption Vector Address Register (IVA). + + Reads and returns the current value of IVA. This function is only available on Itanium processors. + + @return The current value of IVA. +**/ +UINT64 +EFIAPI +AsmReadIva ( + VOID + ); + + +/** + Reads the current value of Page Table Address Register (PTA). + + Reads and returns the current value of PTA. This function is only available on Itanium processors. + + @return The current value of PTA. + +**/ +UINT64 +EFIAPI +AsmReadPta ( + VOID + ); + + +/** + Writes the current value of 64-bit Default Control Register (DCR). + + Writes the current value of DCR. The 64-bit value written to the DCR is returned. + No parameter checking is performed on Value. All bits of Value corresponding to + reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur. + The caller must either guarantee that Value is valid, or the caller must set up + fault handlers to catch the faults. + This function is only available on Itanium processors. + + @param Value The 64-bit value to write to DCR. + + @return The 64-bit value written to the DCR. + +**/ +UINT64 +EFIAPI +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 + + +#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; + +#endif + +#if defined (MDE_CPU_X64) +/// +/// Byte packed structure for an x64 Interrupt Gate Descriptor. +/// +typedef union { + struct { + UINT32 OffsetLow:16; ///< Offset bits 15..0. + UINT32 Selector:16; ///< Selector. + UINT32 Reserved_0:8; ///< Reserved. + UINT32 GateType:8; ///< Gate Type. See #defines above. + UINT32 OffsetHigh:16; ///< Offset bits 31..16. + UINT32 OffsetUpper:32; ///< Offset bits 63..32. + UINT32 Reserved_1:32; ///< Reserved. + } Bits; + struct { + UINT64 Uint64; + UINT64 Uint64_1; + } Uint128; +} IA32_IDT_GATE_DESCRIPTOR; + +#endif + +/// +/// Byte packed structure for an FP/SSE/SSE2 context. +/// +typedef struct { + UINT8 Buffer[512]; +} IA32_FX_BUFFER; + +/// +/// Structures for the 16-bit real mode thunks. +/// +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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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(). + + @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 + ); + +#endif +#endif + + diff --git a/Cryptlib/Library/BaseCryptLib.h b/Cryptlib/Library/BaseCryptLib.h new file mode 100644 index 00000000..0f4b026c --- /dev/null +++ b/Cryptlib/Library/BaseCryptLib.h @@ -0,0 +1,1927 @@ +/** @file
+ Defines base cryptographic library APIs.
+ The Base Cryptographic Library provides implementations of basic cryptography
+ primitives (Hash Serials, HMAC, RSA, Diffie-Hellman, etc) for UEFI security
+ functionality enabling.
+
+Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>
+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_CRYPT_LIB_H__
+#define __BASE_CRYPT_LIB_H__
+
+#define IN
+#define OUT
+#define CONST const
+
+///
+/// MD4 digest size in bytes
+///
+#define MD4_DIGEST_SIZE 16
+
+///
+/// MD5 digest size in bytes
+///
+#define MD5_DIGEST_SIZE 16
+
+///
+/// SHA-1 digest size in bytes.
+///
+#define SHA1_DIGEST_SIZE 20
+
+///
+/// SHA-256 digest size in bytes
+///
+#define SHA256_DIGEST_SIZE 32
+
+///
+/// TDES block size in bytes
+///
+#define TDES_BLOCK_SIZE 8
+
+///
+/// AES block size in bytes
+///
+#define AES_BLOCK_SIZE 16
+
+///
+/// RSA Key Tags Definition used in RsaSetKey() function for key component identification.
+///
+typedef enum {
+ RsaKeyN, ///< RSA public Modulus (N)
+ RsaKeyE, ///< RSA Public exponent (e)
+ RsaKeyD, ///< RSA Private exponent (d)
+ RsaKeyP, ///< RSA secret prime factor of Modulus (p)
+ RsaKeyQ, ///< RSA secret prime factor of Modules (q)
+ RsaKeyDp, ///< p's CRT exponent (== d mod (p - 1))
+ RsaKeyDq, ///< q's CRT exponent (== d mod (q - 1))
+ RsaKeyQInv ///< The CRT coefficient (== 1/q mod p)
+} RSA_KEY_TAG;
+
+//=====================================================================================
+// One-Way Cryptographic Hash Primitives
+//=====================================================================================
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for MD4 hash operations.
+
+ @return The size, in bytes, of the context buffer required for MD4 hash operations.
+
+**/
+UINTN
+EFIAPI
+Md4GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory pointed by Md4Context as MD4 hash context for
+ subsequent use.
+
+ If Md4Context is NULL, then return FALSE.
+
+ @param[out] Md4Context Pointer to MD4 context being initialized.
+
+ @retval TRUE MD4 context initialization succeeded.
+ @retval FALSE MD4 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md4Init (
+ OUT VOID *Md4Context
+ );
+
+/**
+ Makes a copy of an existing MD4 context.
+
+ If Md4Context is NULL, then return FALSE.
+ If NewMd4Context is NULL, then return FALSE.
+
+ @param[in] Md4Context Pointer to MD4 context being copied.
+ @param[out] NewMd4Context Pointer to new MD4 context.
+
+ @retval TRUE MD4 context copy succeeded.
+ @retval FALSE MD4 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md4Duplicate (
+ IN CONST VOID *Md4Context,
+ OUT VOID *NewMd4Context
+ );
+
+/**
+ Digests the input data and updates MD4 context.
+
+ This function performs MD4 digest on a data buffer of the specified size.
+ It can be called multiple times to compute the digest of long or discontinuous data streams.
+ MD4 context should be already correctly intialized by Md4Init(), and should not be finalized
+ by Md4Final(). Behavior with invalid context is undefined.
+
+ If Md4Context is NULL, then return FALSE.
+
+ @param[in, out] Md4Context Pointer to the MD4 context.
+ @param[in] Data Pointer to the buffer containing the data to be hashed.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE MD4 data digest succeeded.
+ @retval FALSE MD4 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md4Update (
+ IN OUT VOID *Md4Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Completes computation of the MD4 digest value.
+
+ This function completes MD4 hash computation and retrieves the digest value into
+ the specified memory. After this function has been called, the MD4 context cannot
+ be used again.
+ MD4 context should be already correctly intialized by Md4Init(), and should not be
+ finalized by Md4Final(). Behavior with invalid MD4 context is undefined.
+
+ If Md4Context is NULL, then return FALSE.
+ If HashValue is NULL, then return FALSE.
+
+ @param[in, out] Md4Context Pointer to the MD4 context.
+ @param[out] HashValue Pointer to a buffer that receives the MD4 digest
+ value (16 bytes).
+
+ @retval TRUE MD4 digest computation succeeded.
+ @retval FALSE MD4 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md4Final (
+ IN OUT VOID *Md4Context,
+ OUT UINT8 *HashValue
+ );
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for MD5 hash operations.
+
+ @return The size, in bytes, of the context buffer required for MD5 hash operations.
+
+**/
+UINTN
+EFIAPI
+Md5GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory pointed by Md5Context as MD5 hash context for
+ subsequent use.
+
+ If Md5Context is NULL, then return FALSE.
+
+ @param[out] Md5Context Pointer to MD5 context being initialized.
+
+ @retval TRUE MD5 context initialization succeeded.
+ @retval FALSE MD5 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Init (
+ OUT VOID *Md5Context
+ );
+
+/**
+ Makes a copy of an existing MD5 context.
+
+ If Md5Context is NULL, then return FALSE.
+ If NewMd5Context is NULL, then return FALSE.
+
+ @param[in] Md5Context Pointer to MD5 context being copied.
+ @param[out] NewMd5Context Pointer to new MD5 context.
+
+ @retval TRUE MD5 context copy succeeded.
+ @retval FALSE MD5 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Duplicate (
+ IN CONST VOID *Md5Context,
+ OUT VOID *NewMd5Context
+ );
+
+/**
+ Digests the input data and updates MD5 context.
+
+ This function performs MD5 digest on a data buffer of the specified size.
+ It can be called multiple times to compute the digest of long or discontinuous data streams.
+ MD5 context should be already correctly intialized by Md5Init(), and should not be finalized
+ by Md5Final(). Behavior with invalid context is undefined.
+
+ If Md5Context is NULL, then return FALSE.
+
+ @param[in, out] Md5Context Pointer to the MD5 context.
+ @param[in] Data Pointer to the buffer containing the data to be hashed.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE MD5 data digest succeeded.
+ @retval FALSE MD5 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Update (
+ IN OUT VOID *Md5Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Completes computation of the MD5 digest value.
+
+ This function completes MD5 hash computation and retrieves the digest value into
+ the specified memory. After this function has been called, the MD5 context cannot
+ be used again.
+ MD5 context should be already correctly intialized by Md5Init(), and should not be
+ finalized by Md5Final(). Behavior with invalid MD5 context is undefined.
+
+ If Md5Context is NULL, then return FALSE.
+ If HashValue is NULL, then return FALSE.
+
+ @param[in, out] Md5Context Pointer to the MD5 context.
+ @param[out] HashValue Pointer to a buffer that receives the MD5 digest
+ value (16 bytes).
+
+ @retval TRUE MD5 digest computation succeeded.
+ @retval FALSE MD5 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Final (
+ IN OUT VOID *Md5Context,
+ OUT UINT8 *HashValue
+ );
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for SHA-1 hash operations.
+
+ @return The size, in bytes, of the context buffer required for SHA-1 hash operations.
+
+**/
+UINTN
+EFIAPI
+Sha1GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory pointed by Sha1Context as SHA-1 hash context for
+ subsequent use.
+
+ If Sha1Context is NULL, then return FALSE.
+
+ @param[out] Sha1Context Pointer to SHA-1 context being initialized.
+
+ @retval TRUE SHA-1 context initialization succeeded.
+ @retval FALSE SHA-1 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha1Init (
+ OUT VOID *Sha1Context
+ );
+
+/**
+ Makes a copy of an existing SHA-1 context.
+
+ If Sha1Context is NULL, then return FALSE.
+ If NewSha1Context is NULL, then return FALSE.
+
+ @param[in] Sha1Context Pointer to SHA-1 context being copied.
+ @param[out] NewSha1Context Pointer to new SHA-1 context.
+
+ @retval TRUE SHA-1 context copy succeeded.
+ @retval FALSE SHA-1 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha1Duplicate (
+ IN CONST VOID *Sha1Context,
+ OUT VOID *NewSha1Context
+ );
+
+/**
+ Digests the input data and updates SHA-1 context.
+
+ This function performs SHA-1 digest on a data buffer of the specified size.
+ It can be called multiple times to compute the digest of long or discontinuous data streams.
+ SHA-1 context should be already correctly intialized by Sha1Init(), and should not be finalized
+ by Sha1Final(). Behavior with invalid context is undefined.
+
+ If Sha1Context is NULL, then return FALSE.
+
+ @param[in, out] Sha1Context Pointer to the SHA-1 context.
+ @param[in] Data Pointer to the buffer containing the data to be hashed.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE SHA-1 data digest succeeded.
+ @retval FALSE SHA-1 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha1Update (
+ IN OUT VOID *Sha1Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Completes computation of the SHA-1 digest value.
+
+ This function completes SHA-1 hash computation and retrieves the digest value into
+ the specified memory. After this function has been called, the SHA-1 context cannot
+ be used again.
+ SHA-1 context should be already correctly intialized by Sha1Init(), and should not be
+ finalized by Sha1Final(). Behavior with invalid SHA-1 context is undefined.
+
+ If Sha1Context is NULL, then return FALSE.
+ If HashValue is NULL, then return FALSE.
+
+ @param[in, out] Sha1Context Pointer to the SHA-1 context.
+ @param[out] HashValue Pointer to a buffer that receives the SHA-1 digest
+ value (20 bytes).
+
+ @retval TRUE SHA-1 digest computation succeeded.
+ @retval FALSE SHA-1 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha1Final (
+ IN OUT VOID *Sha1Context,
+ OUT UINT8 *HashValue
+ );
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for SHA-256 hash operations.
+
+ @return The size, in bytes, of the context buffer required for SHA-256 hash operations.
+
+**/
+UINTN
+EFIAPI
+Sha256GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for
+ subsequent use.
+
+ If Sha256Context is NULL, then return FALSE.
+
+ @param[out] Sha256Context Pointer to SHA-256 context being initialized.
+
+ @retval TRUE SHA-256 context initialization succeeded.
+ @retval FALSE SHA-256 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha256Init (
+ OUT VOID *Sha256Context
+ );
+
+/**
+ Makes a copy of an existing SHA-256 context.
+
+ If Sha256Context is NULL, then return FALSE.
+ If NewSha256Context is NULL, then return FALSE.
+
+ @param[in] Sha256Context Pointer to SHA-256 context being copied.
+ @param[out] NewSha256Context Pointer to new SHA-256 context.
+
+ @retval TRUE SHA-256 context copy succeeded.
+ @retval FALSE SHA-256 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha256Duplicate (
+ IN CONST VOID *Sha256Context,
+ OUT VOID *NewSha256Context
+ );
+
+/**
+ Digests the input data and updates SHA-256 context.
+
+ This function performs SHA-256 digest on a data buffer of the specified size.
+ It can be called multiple times to compute the digest of long or discontinuous data streams.
+ SHA-256 context should be already correctly intialized by Sha256Init(), and should not be finalized
+ by Sha256Final(). Behavior with invalid context is undefined.
+
+ If Sha256Context is NULL, then return FALSE.
+
+ @param[in, out] Sha256Context Pointer to the SHA-256 context.
+ @param[in] Data Pointer to the buffer containing the data to be hashed.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE SHA-256 data digest succeeded.
+ @retval FALSE SHA-256 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha256Update (
+ IN OUT VOID *Sha256Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Completes computation of the SHA-256 digest value.
+
+ This function completes SHA-256 hash computation and retrieves the digest value into
+ the specified memory. After this function has been called, the SHA-256 context cannot
+ be used again.
+ SHA-256 context should be already correctly intialized by Sha256Init(), and should not be
+ finalized by Sha256Final(). Behavior with invalid SHA-256 context is undefined.
+
+ If Sha256Context is NULL, then return FALSE.
+ If HashValue is NULL, then return FALSE.
+
+ @param[in, out] Sha256Context Pointer to the SHA-256 context.
+ @param[out] HashValue Pointer to a buffer that receives the SHA-256 digest
+ value (32 bytes).
+
+ @retval TRUE SHA-256 digest computation succeeded.
+ @retval FALSE SHA-256 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+Sha256Final (
+ IN OUT VOID *Sha256Context,
+ OUT UINT8 *HashValue
+ );
+
+
+//=====================================================================================
+// MAC (Message Authentication Code) Primitive
+//=====================================================================================
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.
+
+ @return The size, in bytes, of the context buffer required for HMAC-MD5 operations.
+
+**/
+UINTN
+EFIAPI
+HmacMd5GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory pointed by HmacMd5Context as HMAC-MD5 context for
+ subsequent use.
+
+ If HmacMd5Context is NULL, then return FALSE.
+
+ @param[out] HmacMd5Context Pointer to HMAC-MD5 context being initialized.
+ @param[in] Key Pointer to the user-supplied key.
+ @param[in] KeySize Key size in bytes.
+
+ @retval TRUE HMAC-MD5 context initialization succeeded.
+ @retval FALSE HMAC-MD5 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Init (
+ OUT VOID *HmacMd5Context,
+ IN CONST UINT8 *Key,
+ IN UINTN KeySize
+ );
+
+/**
+ Makes a copy of an existing HMAC-MD5 context.
+
+ If HmacMd5Context is NULL, then return FALSE.
+ If NewHmacMd5Context is NULL, then return FALSE.
+
+ @param[in] HmacMd5Context Pointer to HMAC-MD5 context being copied.
+ @param[out] NewHmacMd5Context Pointer to new HMAC-MD5 context.
+
+ @retval TRUE HMAC-MD5 context copy succeeded.
+ @retval FALSE HMAC-MD5 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Duplicate (
+ IN CONST VOID *HmacMd5Context,
+ OUT VOID *NewHmacMd5Context
+ );
+
+/**
+ Digests the input data and updates HMAC-MD5 context.
+
+ This function performs HMAC-MD5 digest on a data buffer of the specified size.
+ It can be called multiple times to compute the digest of long or discontinuous data streams.
+ HMAC-MD5 context should be already correctly intialized by HmacMd5Init(), and should not be
+ finalized by HmacMd5Final(). Behavior with invalid context is undefined.
+
+ If HmacMd5Context is NULL, then return FALSE.
+
+ @param[in, out] HmacMd5Context Pointer to the HMAC-MD5 context.
+ @param[in] Data Pointer to the buffer containing the data to be digested.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE HMAC-MD5 data digest succeeded.
+ @retval FALSE HMAC-MD5 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Update (
+ IN OUT VOID *HmacMd5Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Completes computation of the HMAC-MD5 digest value.
+
+ This function completes HMAC-MD5 hash computation and retrieves the digest value into
+ the specified memory. After this function has been called, the HMAC-MD5 context cannot
+ be used again.
+ HMAC-MD5 context should be already correctly intialized by HmacMd5Init(), and should not be
+ finalized by HmacMd5Final(). Behavior with invalid HMAC-MD5 context is undefined.
+
+ If HmacMd5Context is NULL, then return FALSE.
+ If HashValue is NULL, then return FALSE.
+
+ @param[in, out] HmacMd5Context Pointer to the HMAC-MD5 context.
+ @param[out] HashValue Pointer to a buffer that receives the HMAC-MD5 digest
+ value (16 bytes).
+
+ @retval TRUE HMAC-MD5 digest computation succeeded.
+ @retval FALSE HMAC-MD5 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Final (
+ IN OUT VOID *HmacMd5Context,
+ OUT UINT8 *HmacValue
+ );
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.
+
+ @return The size, in bytes, of the context buffer required for HMAC-SHA1 operations.
+
+**/
+UINTN
+EFIAPI
+HmacSha1GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory pointed by HmacSha1Context as HMAC-SHA1 context for
+ subsequent use.
+
+ If HmacSha1Context is NULL, then return FALSE.
+
+ @param[out] HmacSha1Context Pointer to HMAC-SHA1 context being initialized.
+ @param[in] Key Pointer to the user-supplied key.
+ @param[in] KeySize Key size in bytes.
+
+ @retval TRUE HMAC-SHA1 context initialization succeeded.
+ @retval FALSE HMAC-SHA1 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Init (
+ OUT VOID *HmacSha1Context,
+ IN CONST UINT8 *Key,
+ IN UINTN KeySize
+ );
+
+/**
+ Makes a copy of an existing HMAC-SHA1 context.
+
+ If HmacSha1Context is NULL, then return FALSE.
+ If NewHmacSha1Context is NULL, then return FALSE.
+
+ @param[in] HmacSha1Context Pointer to HMAC-SHA1 context being copied.
+ @param[out] NewHmacSha1Context Pointer to new HMAC-SHA1 context.
+
+ @retval TRUE HMAC-SHA1 context copy succeeded.
+ @retval FALSE HMAC-SHA1 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Duplicate (
+ IN CONST VOID *HmacSha1Context,
+ OUT VOID *NewHmacSha1Context
+ );
+
+/**
+ Digests the input data and updates HMAC-SHA1 context.
+
+ This function performs HMAC-SHA1 digest on a data buffer of the specified size.
+ It can be called multiple times to compute the digest of long or discontinuous data streams.
+ HMAC-SHA1 context should be already correctly intialized by HmacSha1Init(), and should not
+ be finalized by HmacSha1Final(). Behavior with invalid context is undefined.
+
+ If HmacSha1Context is NULL, then return FALSE.
+
+ @param[in, out] HmacSha1Context Pointer to the HMAC-SHA1 context.
+ @param[in] Data Pointer to the buffer containing the data to be digested.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE HMAC-SHA1 data digest succeeded.
+ @retval FALSE HMAC-SHA1 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Update (
+ IN OUT VOID *HmacSha1Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ );
+
+/**
+ Completes computation of the HMAC-SHA1 digest value.
+
+ This function completes HMAC-SHA1 hash computation and retrieves the digest value into
+ the specified memory. After this function has been called, the HMAC-SHA1 context cannot
+ be used again.
+ HMAC-SHA1 context should be already correctly intialized by HmacSha1Init(), and should
+ not be finalized by HmacSha1Final(). Behavior with invalid HMAC-SHA1 context is undefined.
+
+ If HmacSha1Context is NULL, then return FALSE.
+ If HashValue is NULL, then return FALSE.
+
+ @param[in, out] HmacSha1Context Pointer to the HMAC-SHA1 context.
+ @param[out] HashValue Pointer to a buffer that receives the HMAC-SHA1 digest
+ value (20 bytes).
+
+ @retval TRUE HMAC-SHA1 digest computation succeeded.
+ @retval FALSE HMAC-SHA1 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Final (
+ IN OUT VOID *HmacSha1Context,
+ OUT UINT8 *HmacValue
+ );
+
+
+//=====================================================================================
+// Symmetric Cryptography Primitive
+//=====================================================================================
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for TDES operations.
+
+ @return The size, in bytes, of the context buffer required for TDES operations.
+
+**/
+UINTN
+EFIAPI
+TdesGetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory as TDES context for subsequent use.
+
+ This function initializes user-supplied memory pointed by TdesContext as TDES context.
+ In addtion, it sets up all TDES key materials for subsequent encryption and decryption
+ operations.
+ There are 3 key options as follows:
+ KeyLength = 64, Keying option 1: K1 == K2 == K3 (Backward compatibility with DES)
+ KeyLength = 128, Keying option 2: K1 != K2 and K3 = K1 (Less Security)
+ KeyLength = 192 Keying option 3: K1 != K2 != K3 (Strongest)
+
+ If TdesContext is NULL, then return FALSE.
+ If Key is NULL, then return FALSE.
+ If KeyLength is not valid, then return FALSE.
+
+ @param[out] TdesContext Pointer to TDES context being initialized.
+ @param[in] Key Pointer to the user-supplied TDES key.
+ @param[in] KeyLength Length of TDES key in bits.
+
+ @retval TRUE TDES context initialization succeeded.
+ @retval FALSE TDES context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+TdesInit (
+ OUT VOID *TdesContext,
+ IN CONST UINT8 *Key,
+ IN UINTN KeyLength
+ );
+
+/**
+ Performs TDES encryption on a data buffer of the specified size in ECB mode.
+
+ This function performs TDES encryption on data buffer pointed by Input, of specified
+ size of InputSize, in ECB mode.
+ InputSize must be multiple of block size (8 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ TdesContext should be already correctly initialized by TdesInit(). Behavior with
+ invalid TDES context is undefined.
+
+ If TdesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (8 bytes), then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] TdesContext Pointer to the TDES context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[out] Output Pointer to a buffer that receives the TDES encryption output.
+
+ @retval TRUE TDES encryption succeeded.
+ @retval FALSE TDES encryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+TdesEcbEncrypt (
+ IN VOID *TdesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs TDES decryption on a data buffer of the specified size in ECB mode.
+
+ This function performs TDES decryption on data buffer pointed by Input, of specified
+ size of InputSize, in ECB mode.
+ InputSize must be multiple of block size (8 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ TdesContext should be already correctly initialized by TdesInit(). Behavior with
+ invalid TDES context is undefined.
+
+ If TdesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (8 bytes), then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] TdesContext Pointer to the TDES context.
+ @param[in] Input Pointer to the buffer containing the data to be decrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[out] Output Pointer to a buffer that receives the TDES decryption output.
+
+ @retval TRUE TDES decryption succeeded.
+ @retval FALSE TDES decryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+TdesEcbDecrypt (
+ IN VOID *TdesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs TDES encryption on a data buffer of the specified size in CBC mode.
+
+ This function performs TDES encryption on data buffer pointed by Input, of specified
+ size of InputSize, in CBC mode.
+ InputSize must be multiple of block size (8 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ Initialization vector should be one block size (8 bytes).
+ TdesContext should be already correctly initialized by TdesInit(). Behavior with
+ invalid TDES context is undefined.
+
+ If TdesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (8 bytes), then return FALSE.
+ If Ivec is NULL, then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] TdesContext Pointer to the TDES context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[in] Ivec Pointer to initialization vector.
+ @param[out] Output Pointer to a buffer that receives the TDES encryption output.
+
+ @retval TRUE TDES encryption succeeded.
+ @retval FALSE TDES encryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+TdesCbcEncrypt (
+ IN VOID *TdesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ IN CONST UINT8 *Ivec,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs TDES decryption on a data buffer of the specified size in CBC mode.
+
+ This function performs TDES decryption on data buffer pointed by Input, of specified
+ size of InputSize, in CBC mode.
+ InputSize must be multiple of block size (8 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ Initialization vector should be one block size (8 bytes).
+ TdesContext should be already correctly initialized by TdesInit(). Behavior with
+ invalid TDES context is undefined.
+
+ If TdesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (8 bytes), then return FALSE.
+ If Ivec is NULL, then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] TdesContext Pointer to the TDES context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[in] Ivec Pointer to initialization vector.
+ @param[out] Output Pointer to a buffer that receives the TDES encryption output.
+
+ @retval TRUE TDES decryption succeeded.
+ @retval FALSE TDES decryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+TdesCbcDecrypt (
+ IN VOID *TdesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ IN CONST UINT8 *Ivec,
+ OUT UINT8 *Output
+ );
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for AES operations.
+
+ @return The size, in bytes, of the context buffer required for AES operations.
+
+**/
+UINTN
+EFIAPI
+AesGetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory as AES context for subsequent use.
+
+ This function initializes user-supplied memory pointed by AesContext as AES context.
+ In addtion, it sets up all AES key materials for subsequent encryption and decryption
+ operations.
+ There are 3 options for key length, 128 bits, 192 bits, and 256 bits.
+
+ If AesContext is NULL, then return FALSE.
+ If Key is NULL, then return FALSE.
+ If KeyLength is not valid, then return FALSE.
+
+ @param[out] AesContext Pointer to AES context being initialized.
+ @param[in] Key Pointer to the user-supplied AES key.
+ @param[in] KeyLength Length of AES key in bits.
+
+ @retval TRUE AES context initialization succeeded.
+ @retval FALSE AES context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+AesInit (
+ OUT VOID *AesContext,
+ IN CONST UINT8 *Key,
+ IN UINTN KeyLength
+ );
+
+/**
+ Performs AES encryption on a data buffer of the specified size in ECB mode.
+
+ This function performs AES encryption on data buffer pointed by Input, of specified
+ size of InputSize, in ECB mode.
+ InputSize must be multiple of block size (16 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ AesContext should be already correctly initialized by AesInit(). Behavior with
+ invalid AES context is undefined.
+
+ If AesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (16 bytes), then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] AesContext Pointer to the AES context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[out] Output Pointer to a buffer that receives the AES encryption output.
+
+ @retval TRUE AES encryption succeeded.
+ @retval FALSE AES encryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+AesEcbEncrypt (
+ IN VOID *AesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs AES decryption on a data buffer of the specified size in ECB mode.
+
+ This function performs AES decryption on data buffer pointed by Input, of specified
+ size of InputSize, in ECB mode.
+ InputSize must be multiple of block size (16 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ AesContext should be already correctly initialized by AesInit(). Behavior with
+ invalid AES context is undefined.
+
+ If AesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (16 bytes), then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] AesContext Pointer to the AES context.
+ @param[in] Input Pointer to the buffer containing the data to be decrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[out] Output Pointer to a buffer that receives the AES decryption output.
+
+ @retval TRUE AES decryption succeeded.
+ @retval FALSE AES decryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+AesEcbDecrypt (
+ IN VOID *AesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs AES encryption on a data buffer of the specified size in CBC mode.
+
+ This function performs AES encryption on data buffer pointed by Input, of specified
+ size of InputSize, in CBC mode.
+ InputSize must be multiple of block size (16 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ Initialization vector should be one block size (16 bytes).
+ AesContext should be already correctly initialized by AesInit(). Behavior with
+ invalid AES context is undefined.
+
+ If AesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (16 bytes), then return FALSE.
+ If Ivec is NULL, then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] AesContext Pointer to the AES context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[in] Ivec Pointer to initialization vector.
+ @param[out] Output Pointer to a buffer that receives the AES encryption output.
+
+ @retval TRUE AES encryption succeeded.
+ @retval FALSE AES encryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+AesCbcEncrypt (
+ IN VOID *AesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ IN CONST UINT8 *Ivec,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs AES decryption on a data buffer of the specified size in CBC mode.
+
+ This function performs AES decryption on data buffer pointed by Input, of specified
+ size of InputSize, in CBC mode.
+ InputSize must be multiple of block size (16 bytes). This function does not perform
+ padding. Caller must perform padding, if necessary, to ensure valid input data size.
+ Initialization vector should be one block size (16 bytes).
+ AesContext should be already correctly initialized by AesInit(). Behavior with
+ invalid AES context is undefined.
+
+ If AesContext is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If InputSize is not multiple of block size (16 bytes), then return FALSE.
+ If Ivec is NULL, then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] AesContext Pointer to the AES context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[in] Ivec Pointer to initialization vector.
+ @param[out] Output Pointer to a buffer that receives the AES encryption output.
+
+ @retval TRUE AES decryption succeeded.
+ @retval FALSE AES decryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+AesCbcDecrypt (
+ IN VOID *AesContext,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ IN CONST UINT8 *Ivec,
+ OUT UINT8 *Output
+ );
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for ARC4 operations.
+
+ @return The size, in bytes, of the context buffer required for ARC4 operations.
+
+**/
+UINTN
+EFIAPI
+Arc4GetContextSize (
+ VOID
+ );
+
+/**
+ Initializes user-supplied memory as ARC4 context for subsequent use.
+
+ This function initializes user-supplied memory pointed by Arc4Context as ARC4 context.
+ In addtion, it sets up all ARC4 key materials for subsequent encryption and decryption
+ operations.
+
+ If Arc4Context is NULL, then return FALSE.
+ If Key is NULL, then return FALSE.
+ If KeySize does not in the range of [5, 256] bytes, then return FALSE.
+
+ @param[out] Arc4Context Pointer to ARC4 context being initialized.
+ @param[in] Key Pointer to the user-supplied ARC4 key.
+ @param[in] KeySize Size of ARC4 key in bytes.
+
+ @retval TRUE ARC4 context initialization succeeded.
+ @retval FALSE ARC4 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+Arc4Init (
+ OUT VOID *Arc4Context,
+ IN CONST UINT8 *Key,
+ IN UINTN KeySize
+ );
+
+/**
+ Performs ARC4 encryption on a data buffer of the specified size.
+
+ This function performs ARC4 encryption on data buffer pointed by Input, of specified
+ size of InputSize.
+ Arc4Context should be already correctly initialized by Arc4Init(). Behavior with
+ invalid ARC4 context is undefined.
+
+ If Arc4Context is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] Arc4Context Pointer to the ARC4 context.
+ @param[in] Input Pointer to the buffer containing the data to be encrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[out] Output Pointer to a buffer that receives the ARC4 encryption output.
+
+ @retval TRUE ARC4 encryption succeeded.
+ @retval FALSE ARC4 encryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+Arc4Encrypt (
+ IN OUT VOID *Arc4Context,
+ IN CONST UINT8 *Input,
+ IN UINTN InputSize,
+ OUT UINT8 *Output
+ );
+
+/**
+ Performs ARC4 decryption on a data buffer of the specified size.
+
+ This function performs ARC4 decryption on data buffer pointed by Input, of specified
+ size of InputSize.
+ Arc4Context should be already correctly initialized by Arc4Init(). Behavior with
+ invalid ARC4 context is undefined.
+
+ If Arc4Context is NULL, then return FALSE.
+ If Input is NULL, then return FALSE.
+ If Output is NULL, then return FALSE.
+
+ @param[in] Arc4Context Pointer to the ARC4 context.
+ @param[in] Input Pointer to the buffer containing the data to be decrypted.
+ @param[in] InputSize Size of the Input buffer in bytes.
+ @param[out] Output Pointer to a buffer that receives the ARC4 decryption output.
+
+ @retval TRUE ARC4 decryption succeeded.
+ @retval FALSE ARC4 decryption failed.
+
+**/
+BOOLEAN
+EFIAPI
+Arc4Decrypt (
+ IN OUT VOID *Arc4Context,
+ IN UINT8 *Input,
+ IN UINTN InputSize,
+ OUT UINT8 *Output
+ );
+
+/**
+ Resets the ARC4 context to the initial state.
+
+ The function resets the ARC4 context to the state it had immediately after the
+ ARC4Init() function call.
+ Contrary to ARC4Init(), Arc4Reset() requires no secret key as input, but ARC4 context
+ should be already correctly initialized by ARC4Init().
+
+ If Arc4Context is NULL, then return FALSE.
+
+ @param[in, out] Arc4Context Pointer to the ARC4 context.
+
+ @retval TRUE ARC4 reset succeeded.
+ @retval FALSE ARC4 reset failed.
+
+**/
+BOOLEAN
+EFIAPI
+Arc4Reset (
+ IN OUT VOID *Arc4Context
+ );
+
+//=====================================================================================
+// Asymmetric Cryptography Primitive
+//=====================================================================================
+
+/**
+ Allocates and initializes one RSA context for subsequent use.
+
+ @return Pointer to the RSA context that has been initialized.
+ If the allocations fails, RsaNew() returns NULL.
+
+**/
+VOID *
+EFIAPI
+RsaNew (
+ VOID
+ );
+
+/**
+ Release the specified RSA context.
+
+ If RsaContext is NULL, then return FALSE.
+
+ @param[in] RsaContext Pointer to the RSA context to be released.
+
+**/
+VOID
+EFIAPI
+RsaFree (
+ IN VOID *RsaContext
+ );
+
+/**
+ Sets the tag-designated key component into the established RSA context.
+
+ This function sets the tag-designated RSA key component into the established
+ RSA context from the user-specified non-negative integer (octet string format
+ represented in RSA PKCS#1).
+ If BigNumber is NULL, then the specified key componenet in RSA context is cleared.
+
+ If RsaContext is NULL, then return FALSE.
+
+ @param[in, out] RsaContext Pointer to RSA context being set.
+ @param[in] KeyTag Tag of RSA key component being set.
+ @param[in] BigNumber Pointer to octet integer buffer.
+ If NULL, then the specified key componenet in RSA
+ context is cleared.
+ @param[in] BnSize Size of big number buffer in bytes.
+ If BigNumber is NULL, then it is ignored.
+
+ @retval TRUE RSA key component was set successfully.
+ @retval FALSE Invalid RSA key component tag.
+
+**/
+BOOLEAN
+EFIAPI
+RsaSetKey (
+ IN OUT VOID *RsaContext,
+ IN RSA_KEY_TAG KeyTag,
+ IN CONST UINT8 *BigNumber,
+ IN UINTN BnSize
+ );
+
+/**
+ Gets the tag-designated RSA key component from the established RSA context.
+
+ This function retrieves the tag-designated RSA key component from the
+ established RSA context as a non-negative integer (octet string format
+ represented in RSA PKCS#1).
+ If specified key component has not been set or has been cleared, then returned
+ BnSize is set to 0.
+ If the BigNumber buffer is too small to hold the contents of the key, FALSE
+ is returned and BnSize is set to the required buffer size to obtain the key.
+
+ If RsaContext is NULL, then return FALSE.
+ If BnSize is NULL, then return FALSE.
+ If BnSize is large enough but BigNumber is NULL, then return FALSE.
+
+ @param[in, out] RsaContext Pointer to RSA context being set.
+ @param[in] KeyTag Tag of RSA key component being set.
+ @param[out] BigNumber Pointer to octet integer buffer.
+ @param[in, out] BnSize On input, the size of big number buffer in bytes.
+ On output, the size of data returned in big number buffer in bytes.
+
+ @retval TRUE RSA key component was retrieved successfully.
+ @retval FALSE Invalid RSA key component tag.
+ @retval FALSE BnSize is too small.
+
+**/
+BOOLEAN
+EFIAPI
+RsaGetKey (
+ IN OUT VOID *RsaContext,
+ IN RSA_KEY_TAG KeyTag,
+ OUT UINT8 *BigNumber,
+ IN OUT UINTN *BnSize
+ );
+
+/**
+ Generates RSA key components.
+
+ This function generates RSA key components. It takes RSA public exponent E and
+ length in bits of RSA modulus N as input, and generates all key components.
+ If PublicExponent is NULL, the default RSA public exponent (0x10001) will be used.
+
+ Before this function can be invoked, pseudorandom number generator must be correctly
+ initialized by RandomSeed().
+
+ If RsaContext is NULL, then return FALSE.
+
+ @param[in, out] RsaContext Pointer to RSA context being set.
+ @param[in] ModulusLength Length of RSA modulus N in bits.
+ @param[in] PublicExponent Pointer to RSA public exponent.
+ @param[in] PublicExponentSize Size of RSA public exponent buffer in bytes.
+
+ @retval TRUE RSA key component was generated successfully.
+ @retval FALSE Invalid RSA key component tag.
+
+**/
+BOOLEAN
+EFIAPI
+RsaGenerateKey (
+ IN OUT VOID *RsaContext,
+ IN UINTN ModulusLength,
+ IN CONST UINT8 *PublicExponent,
+ IN UINTN PublicExponentSize
+ );
+
+/**
+ Validates key components of RSA context.
+
+ This function validates key compoents of RSA context in following aspects:
+ - Whether p is a prime
+ - Whether q is a prime
+ - Whether n = p * q
+ - Whether d*e = 1 mod lcm(p-1,q-1)
+
+ If RsaContext is NULL, then return FALSE.
+
+ @param[in] RsaContext Pointer to RSA context to check.
+
+ @retval TRUE RSA key components are valid.
+ @retval FALSE RSA key components are not valid.
+
+**/
+BOOLEAN
+EFIAPI
+RsaCheckKey (
+ IN VOID *RsaContext
+ );
+
+/**
+ Carries out the RSA-SSA signature generation with EMSA-PKCS1-v1_5 encoding scheme.
+
+ This function carries out the RSA-SSA signature generation with EMSA-PKCS1-v1_5 encoding scheme defined in
+ RSA PKCS#1.
+ If the Signature buffer is too small to hold the contents of signature, FALSE
+ is returned and SigSize is set to the required buffer size to obtain the signature.
+
+ If RsaContext is NULL, then return FALSE.
+ If MessageHash is NULL, then return FALSE.
+ If HashSize is not equal to the size of MD5, SHA-1 or SHA-256 digest, then return FALSE.
+ If SigSize is large enough but Signature is NULL, then return FALSE.
+
+ @param[in] RsaContext Pointer to RSA context for signature generation.
+ @param[in] MessageHash Pointer to octet message hash to be signed.
+ @param[in] HashSize Size of the message hash in bytes.
+ @param[out] Signature Pointer to buffer to receive RSA PKCS1-v1_5 signature.
+ @param[in, out] SigSize On input, the size of Signature buffer in bytes.
+ On output, the size of data returned in Signature buffer in bytes.
+
+ @retval TRUE Signature successfully generated in PKCS1-v1_5.
+ @retval FALSE Signature generation failed.
+ @retval FALSE SigSize is too small.
+
+**/
+BOOLEAN
+EFIAPI
+RsaPkcs1Sign (
+ IN VOID *RsaContext,
+ IN CONST UINT8 *MessageHash,
+ IN UINTN HashSize,
+ OUT UINT8 *Signature,
+ IN OUT UINTN *SigSize
+ );
+
+/**
+ Verifies the RSA-SSA signature with EMSA-PKCS1-v1_5 encoding scheme defined in
+ RSA PKCS#1.
+
+ If RsaContext is NULL, then return FALSE.
+ If MessageHash is NULL, then return FALSE.
+ If Signature is NULL, then return FALSE.
+ If HashSize is not equal to the size of MD5, SHA-1, SHA-256 digest, then return FALSE.
+
+ @param[in] RsaContext Pointer to RSA context for signature verification.
+ @param[in] MessageHash Pointer to octet message hash to be checked.
+ @param[in] HashSize Size of the message hash in bytes.
+ @param[in] Signature Pointer to RSA PKCS1-v1_5 signature to be verified.
+ @param[in] SigSize Size of signature in bytes.
+
+ @retval TRUE Valid signature encoded in PKCS1-v1_5.
+ @retval FALSE Invalid signature or invalid RSA context.
+
+**/
+BOOLEAN
+EFIAPI
+RsaPkcs1Verify (
+ IN VOID *RsaContext,
+ IN CONST UINT8 *MessageHash,
+ IN UINTN HashSize,
+ IN UINT8 *Signature,
+ IN UINTN SigSize
+ );
+
+/**
+ Retrieve the RSA Private Key from the password-protected PEM key data.
+
+ @param[in] PemData Pointer to the PEM-encoded key data to be retrieved.
+ @param[in] PemSize Size of the PEM key data in bytes.
+ @param[in] Password NULL-terminated passphrase used for encrypted PEM key data.
+ @param[out] RsaContext Pointer to new-generated RSA context which contain the retrieved
+ RSA private key component. Use RsaFree() function to free the
+ resource.
+
+ If PemData is NULL, then return FALSE.
+ If RsaContext is NULL, then return FALSE.
+
+ @retval TRUE RSA Private Key was retrieved successfully.
+ @retval FALSE Invalid PEM key data or incorrect password.
+
+**/
+BOOLEAN
+EFIAPI
+RsaGetPrivateKeyFromPem (
+ IN CONST UINT8 *PemData,
+ IN UINTN PemSize,
+ IN CONST CHAR8 *Password,
+ OUT VOID **RsaContext
+ );
+
+/**
+ Retrieve the RSA Public Key from one DER-encoded X509 certificate.
+
+ @param[in] Cert Pointer to the DER-encoded X509 certificate.
+ @param[in] CertSize Size of the X509 certificate in bytes.
+ @param[out] RsaContext Pointer to new-generated RSA context which contain the retrieved
+ RSA public key component. Use RsaFree() function to free the
+ resource.
+
+ If Cert is NULL, then return FALSE.
+ If RsaContext is NULL, then return FALSE.
+
+ @retval TRUE RSA Public Key was retrieved successfully.
+ @retval FALSE Fail to retrieve RSA public key from X509 certificate.
+
+**/
+BOOLEAN
+EFIAPI
+RsaGetPublicKeyFromX509 (
+ IN CONST UINT8 *Cert,
+ IN UINTN CertSize,
+ OUT VOID **RsaContext
+ );
+
+/**
+ Retrieve the subject bytes from one X.509 certificate.
+
+ @param[in] Cert Pointer to the DER-encoded X509 certificate.
+ @param[in] CertSize Size of the X509 certificate in bytes.
+ @param[out] CertSubject Pointer to the retrieved certificate subject bytes.
+ @param[in, out] SubjectSize The size in bytes of the CertSubject buffer on input,
+ and the size of buffer returned CertSubject on output.
+
+ If Cert is NULL, then return FALSE.
+ If SubjectSize is NULL, then return FALSE.
+
+ @retval TRUE The certificate subject retrieved successfully.
+ @retval FALSE Invalid certificate, or the SubjectSize is too small for the result.
+ The SubjectSize will be updated with the required size.
+
+**/
+BOOLEAN
+EFIAPI
+X509GetSubjectName (
+ IN CONST UINT8 *Cert,
+ IN UINTN CertSize,
+ OUT UINT8 *CertSubject,
+ IN OUT UINTN *SubjectSize
+ );
+
+/**
+ Verify one X509 certificate was issued by the trusted CA.
+
+ @param[in] Cert Pointer to the DER-encoded X509 certificate to be verified.
+ @param[in] CertSize Size of the X509 certificate in bytes.
+ @param[in] CACert Pointer to the DER-encoded trusted CA certificate.
+ @param[in] CACertSize Size of the CA Certificate in bytes.
+
+ If Cert is NULL, then return FALSE.
+ If CACert is NULL, then return FALSE.
+
+ @retval TRUE The certificate was issued by the trusted CA.
+ @retval FALSE Invalid certificate or the certificate was not issued by the given
+ trusted CA.
+
+**/
+BOOLEAN
+EFIAPI
+X509VerifyCert (
+ IN CONST UINT8 *Cert,
+ IN UINTN CertSize,
+ IN CONST UINT8 *CACert,
+ IN UINTN CACertSize
+ );
+
+/**
+ Construct a X509 object from DER-encoded certificate data.
+
+ If Cert is NULL, then return FALSE.
+ If SingleX509Cert is NULL, then return FALSE.
+
+ @param[in] Cert Pointer to the DER-encoded certificate data.
+ @param[in] CertSize The size of certificate data in bytes.
+ @param[out] SingleX509Cert The generated X509 object.
+
+ @retval TRUE The X509 object generation succeeded.
+ @retval FALSE The operation failed.
+
+**/
+BOOLEAN
+EFIAPI
+X509ConstructCertificate (
+ IN CONST UINT8 *Cert,
+ IN UINTN CertSize,
+ OUT UINT8 **SingleX509Cert
+ );
+
+/**
+ Construct a X509 stack object from a list of DER-encoded certificate data.
+
+ If X509Stack is NULL, then return FALSE.
+
+ @param[in, out] X509Stack On input, pointer to an existing X509 stack object.
+ On output, pointer to the X509 stack object with new
+ inserted X509 certificate.
+ @param ... A list of DER-encoded single certificate data followed
+ by certificate size. A NULL terminates the list. The
+ pairs are the arguments to X509ConstructCertificate().
+
+ @retval TRUE The X509 stack construction succeeded.
+ @retval FALSE The construction operation failed.
+
+**/
+BOOLEAN
+EFIAPI
+X509ConstructCertificateStack (
+ IN OUT UINT8 **X509Stack,
+ ...
+ );
+
+/**
+ Release the specified X509 object.
+
+ If X509Cert is NULL, then return FALSE.
+
+ @param[in] X509Cert Pointer to the X509 object to be released.
+
+**/
+VOID
+EFIAPI
+X509Free (
+ IN VOID *X509Cert
+ );
+
+/**
+ Release the specified X509 stack object.
+
+ If X509Stack is NULL, then return FALSE.
+
+ @param[in] X509Stack Pointer to the X509 stack object to be released.
+
+**/
+VOID
+EFIAPI
+X509StackFree (
+ IN VOID *X509Stack
+ );
+
+/**
+ Get the signer's certificates from PKCS#7 signed data as described in "PKCS #7:
+ Cryptographic Message Syntax Standard". The input signed data could be wrapped
+ in a ContentInfo structure.
+
+ If P7Data, CertStack, StackLength, TrustedCert or CertLength is NULL, then
+ return FALSE. If P7Length overflow, then return FAlSE.
+
+ @param[in] P7Data Pointer to the PKCS#7 message to verify.
+ @param[in] P7Length Length of the PKCS#7 message in bytes.
+ @param[out] CertStack Pointer to Signer's certificates retrieved from P7Data.
+ It's caller's responsiblity to free the buffer.
+ @param[out] StackLength Length of signer's certificates in bytes.
+ @param[out] TrustedCert Pointer to a trusted certificate from Signer's certificates.
+ It's caller's responsiblity to free the buffer.
+ @param[out] CertLength Length of the trusted certificate in bytes.
+
+ @retval TRUE The operation is finished successfully.
+ @retval FALSE Error occurs during the operation.
+
+**/
+BOOLEAN
+EFIAPI
+Pkcs7GetSigners (
+ IN CONST UINT8 *P7Data,
+ IN UINTN P7Length,
+ OUT UINT8 **CertStack,
+ OUT UINTN *StackLength,
+ OUT UINT8 **TrustedCert,
+ OUT UINTN *CertLength
+ );
+
+/**
+ Wrap function to use free() to free allocated memory for certificates.
+
+ @param[in] Certs Pointer to the certificates to be freed.
+
+**/
+VOID
+EFIAPI
+Pkcs7FreeSigners (
+ IN UINT8 *Certs
+ );
+
+/**
+ Creates a PKCS#7 signedData as described in "PKCS #7: Cryptographic Message
+ Syntax Standard, version 1.5". This interface is only intended to be used for
+ application to perform PKCS#7 functionality validation.
+
+ @param[in] PrivateKey Pointer to the PEM-formatted private key data for
+ data signing.
+ @param[in] PrivateKeySize Size of the PEM private key data in bytes.
+ @param[in] KeyPassword NULL-terminated passphrase used for encrypted PEM
+ key data.
+ @param[in] InData Pointer to the content to be signed.
+ @param[in] InDataSize Size of InData in bytes.
+ @param[in] SignCert Pointer to signer's DER-encoded certificate to sign with.
+ @param[in] OtherCerts Pointer to an optional additional set of certificates to
+ include in the PKCS#7 signedData (e.g. any intermediate
+ CAs in the chain).
+ @param[out] SignedData Pointer to output PKCS#7 signedData.
+ @param[out] SignedDataSize Size of SignedData in bytes.
+
+ @retval TRUE PKCS#7 data signing succeeded.
+ @retval FALSE PKCS#7 data signing failed.
+
+**/
+BOOLEAN
+EFIAPI
+Pkcs7Sign (
+ IN CONST UINT8 *PrivateKey,
+ IN UINTN PrivateKeySize,
+ IN CONST UINT8 *KeyPassword,
+ IN UINT8 *InData,
+ IN UINTN InDataSize,
+ IN UINT8 *SignCert,
+ IN UINT8 *OtherCerts OPTIONAL,
+ OUT UINT8 **SignedData,
+ OUT UINTN *SignedDataSize
+ );
+
+/**
+ Verifies the validility of a PKCS#7 signed data as described in "PKCS #7:
+ Cryptographic Message Syntax Standard". The input signed data could be wrapped
+ in a ContentInfo structure.
+
+ If P7Data, TrustedCert or InData is NULL, then return FALSE.
+ If P7Length, CertLength or DataLength overflow, then return FAlSE.
+
+ @param[in] P7Data Pointer to the PKCS#7 message to verify.
+ @param[in] P7Length Length of the PKCS#7 message in bytes.
+ @param[in] TrustedCert Pointer to a trusted/root certificate encoded in DER, which
+ is used for certificate chain verification.
+ @param[in] CertLength Length of the trusted certificate in bytes.
+ @param[in] InData Pointer to the content to be verified.
+ @param[in] DataLength Length of InData in bytes.
+
+ @retval TRUE The specified PKCS#7 signed data is valid.
+ @retval FALSE Invalid PKCS#7 signed data.
+
+**/
+BOOLEAN
+EFIAPI
+Pkcs7Verify (
+ IN CONST UINT8 *P7Data,
+ IN UINTN P7Length,
+ IN CONST UINT8 *TrustedCert,
+ IN UINTN CertLength,
+ IN CONST UINT8 *InData,
+ IN UINTN DataLength
+ );
+
+/**
+ Verifies the validility of a PE/COFF Authenticode Signature as described in "Windows
+ Authenticode Portable Executable Signature Format".
+
+ If AuthData is NULL, then return FALSE.
+ If ImageHash is NULL, then return FALSE.
+
+ @param[in] AuthData Pointer to the Authenticode Signature retrieved from signed
+ PE/COFF image to be verified.
+ @param[in] DataSize Size of the Authenticode Signature in bytes.
+ @param[in] TrustedCert Pointer to a trusted/root certificate encoded in DER, which
+ is used for certificate chain verification.
+ @param[in] CertSize Size of the trusted certificate in bytes.
+ @param[in] ImageHash Pointer to the original image file hash value. The procudure
+ for calculating the image hash value is described in Authenticode
+ specification.
+ @param[in] HashSize Size of Image hash value in bytes.
+
+ @retval TRUE The specified Authenticode Signature is valid.
+ @retval FALSE Invalid Authenticode Signature.
+
+**/
+BOOLEAN
+EFIAPI
+AuthenticodeVerify (
+ IN CONST UINT8 *AuthData,
+ IN UINTN DataSize,
+ IN CONST UINT8 *TrustedCert,
+ IN UINTN CertSize,
+ IN CONST UINT8 *ImageHash,
+ IN UINTN HashSize
+ );
+
+//=====================================================================================
+// DH Key Exchange Primitive
+//=====================================================================================
+
+/**
+ Allocates and Initializes one Diffie-Hellman Context for subsequent use.
+
+ @return Pointer to the Diffie-Hellman Context that has been initialized.
+ If the allocations fails, DhNew() returns NULL.
+
+**/
+VOID *
+EFIAPI
+DhNew (
+ VOID
+ );
+
+/**
+ Release the specified DH context.
+
+ If DhContext is NULL, then return FALSE.
+
+ @param[in] DhContext Pointer to the DH context to be released.
+
+**/
+VOID
+EFIAPI
+DhFree (
+ IN VOID *DhContext
+ );
+
+/**
+ Generates DH parameter.
+
+ Given generator g, and length of prime number p in bits, this function generates p,
+ and sets DH context according to value of g and p.
+
+ Before this function can be invoked, pseudorandom number generator must be correctly
+ initialized by RandomSeed().
+
+ If DhContext is NULL, then return FALSE.
+ If Prime is NULL, then return FALSE.
+
+ @param[in, out] DhContext Pointer to the DH context.
+ @param[in] Generator Value of generator.
+ @param[in] PrimeLength Length in bits of prime to be generated.
+ @param[out] Prime Pointer to the buffer to receive the generated prime number.
+
+ @retval TRUE DH pamameter generation succeeded.
+ @retval FALSE Value of Generator is not supported.
+ @retval FALSE PRNG fails to generate random prime number with PrimeLength.
+
+**/
+BOOLEAN
+EFIAPI
+DhGenerateParameter (
+ IN OUT VOID *DhContext,
+ IN UINTN Generator,
+ IN UINTN PrimeLength,
+ OUT UINT8 *Prime
+ );
+
+/**
+ Sets generator and prime parameters for DH.
+
+ Given generator g, and prime number p, this function and sets DH
+ context accordingly.
+
+ If DhContext is NULL, then return FALSE.
+ If Prime is NULL, then return FALSE.
+
+ @param[in, out] DhContext Pointer to the DH context.
+ @param[in] Generator Value of generator.
+ @param[in] PrimeLength Length in bits of prime to be generated.
+ @param[in] Prime Pointer to the prime number.
+
+ @retval TRUE DH pamameter setting succeeded.
+ @retval FALSE Value of Generator is not supported.
+ @retval FALSE Value of Generator is not suitable for the Prime.
+ @retval FALSE Value of Prime is not a prime number.
+ @retval FALSE Value of Prime is not a safe prime number.
+
+**/
+BOOLEAN
+EFIAPI
+DhSetParameter (
+ IN OUT VOID *DhContext,
+ IN UINTN Generator,
+ IN UINTN PrimeLength,
+ IN CONST UINT8 *Prime
+ );
+
+/**
+ Generates DH public key.
+
+ This function generates random secret exponent, and computes the public key, which is
+ returned via parameter PublicKey and PublicKeySize. DH context is updated accordingly.
+ If the PublicKey buffer is too small to hold the public key, FALSE is returned and
+ PublicKeySize is set to the required buffer size to obtain the public key.
+
+ If DhContext is NULL, then return FALSE.
+ If PublicKeySize is NULL, then return FALSE.
+ If PublicKeySize is large enough but PublicKey is NULL, then return FALSE.
+
+ @param[in, out] DhContext Pointer to the DH context.
+ @param[out] PublicKey Pointer to the buffer to receive generated public key.
+ @param[in, out] PublicKeySize On input, the size of PublicKey buffer in bytes.
+ On output, the size of data returned in PublicKey buffer in bytes.
+
+ @retval TRUE DH public key generation succeeded.
+ @retval FALSE DH public key generation failed.
+ @retval FALSE PublicKeySize is not large enough.
+
+**/
+BOOLEAN
+EFIAPI
+DhGenerateKey (
+ IN OUT VOID *DhContext,
+ OUT UINT8 *PublicKey,
+ IN OUT UINTN *PublicKeySize
+ );
+
+/**
+ Computes exchanged common key.
+
+ Given peer's public key, this function computes the exchanged common key, based on its own
+ context including value of prime modulus and random secret exponent.
+
+ If DhContext is NULL, then return FALSE.
+ If PeerPublicKey is NULL, then return FALSE.
+ If KeySize is NULL, then return FALSE.
+ If KeySize is large enough but Key is NULL, then return FALSE.
+
+ @param[in, out] DhContext Pointer to the DH context.
+ @param[in] PeerPublicKey Pointer to the peer's public key.
+ @param[in] PeerPublicKeySize Size of peer's public key in bytes.
+ @param[out] Key Pointer to the buffer to receive generated key.
+ @param[in, out] KeySize On input, the size of Key buffer in bytes.
+ On output, the size of data returned in Key buffer in bytes.
+
+ @retval TRUE DH exchanged key generation succeeded.
+ @retval FALSE DH exchanged key generation failed.
+ @retval FALSE KeySize is not large enough.
+
+**/
+BOOLEAN
+EFIAPI
+DhComputeKey (
+ IN OUT VOID *DhContext,
+ IN CONST UINT8 *PeerPublicKey,
+ IN UINTN PeerPublicKeySize,
+ OUT UINT8 *Key,
+ IN OUT UINTN *KeySize
+ );
+
+//=====================================================================================
+// Pseudo-Random Generation Primitive
+//=====================================================================================
+
+/**
+ Sets up the seed value for the pseudorandom number generator.
+
+ This function sets up the seed value for the pseudorandom number generator.
+ If Seed is not NULL, then the seed passed in is used.
+ If Seed is NULL, then default seed is used.
+
+ @param[in] Seed Pointer to seed value.
+ If NULL, default seed is used.
+ @param[in] SeedSize Size of seed value.
+ If Seed is NULL, this parameter is ignored.
+
+ @retval TRUE Pseudorandom number generator has enough entropy for random generation.
+ @retval FALSE Pseudorandom number generator does not have enough entropy for random generation.
+
+**/
+BOOLEAN
+EFIAPI
+RandomSeed (
+ IN CONST UINT8 *Seed OPTIONAL,
+ IN UINTN SeedSize
+ );
+
+/**
+ Generates a pseudorandom byte stream of the specified size.
+
+ If Output is NULL, then return FALSE.
+
+ @param[out] Output Pointer to buffer to receive random value.
+ @param[in] Size Size of randome bytes to generate.
+
+ @retval TRUE Pseudorandom byte stream generated successfully.
+ @retval FALSE Pseudorandom number generator fails to generate due to lack of entropy.
+
+**/
+BOOLEAN
+EFIAPI
+RandomBytes (
+ OUT UINT8 *Output,
+ IN UINTN Size
+ );
+
+#endif // __BASE_CRYPT_LIB_H__
diff --git a/Cryptlib/Library/BaseLib.h b/Cryptlib/Library/BaseLib.h new file mode 100644 index 00000000..4c99fa9b --- /dev/null +++ b/Cryptlib/Library/BaseLib.h @@ -0,0 +1,2 @@ +#include <efi.h> +#include <efilib.h> diff --git a/Cryptlib/Library/BaseMemoryLib.h b/Cryptlib/Library/BaseMemoryLib.h new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/Cryptlib/Library/BaseMemoryLib.h diff --git a/Cryptlib/Library/DebugLib.h b/Cryptlib/Library/DebugLib.h new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/Cryptlib/Library/DebugLib.h diff --git a/Cryptlib/Library/MemoryAllocationLib.h b/Cryptlib/Library/MemoryAllocationLib.h new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/Cryptlib/Library/MemoryAllocationLib.h |