tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

synchronize the MdePkg/Include/Library/BaseLib.h and the MDE_Library_Spec. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6560 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
gikidy 2008-11-17 09:42:02 +00:00
parent 9510db651c
commit 17f695ed2b
1 changed files with 166 additions and 111 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

193
MdePkg/Include/Library/BaseLib.h
View File

@ -160,9 +160,8 @@ StrCpy (
/** /**
Copies one Null-terminated Unicode string with a maximum length to another Copies up to a specified length from one Null-terminated Unicode string to
Null-terminated Unicode string with a maximum length and returns the new another Null-terminated Unicode string and returns the new Unicode string.
Unicode string.
This function copies the contents of the Unicode string Source to the Unicode This function copies the contents of the Unicode string Source to the Unicode
string Destination, and returns Destination. At most, Length Unicode string Destination, and returns Destination. At most, Length Unicode
@ -225,8 +224,8 @@ StrLen (
Returns the size of a Null-terminated Unicode string in bytes, including the Returns the size of a Null-terminated Unicode string in bytes, including the
Null terminator. Null terminator.
This function returns the size, in bytes, of the Null-terminated Unicode This function returns the size, in bytes, of the Null-terminated Unicode string
string specified by String. specified by String.
If String is NULL, then ASSERT(). If String is NULL, then ASSERT().
If String is not aligned on a 16-bit boundary, then ASSERT(). If String is not aligned on a 16-bit boundary, then ASSERT().
@ -283,8 +282,8 @@ StrCmp (
/** /**
Compares two Null-terminated Unicode strings with maximum lengths, and Compares up to a specified length the contents of two Null-terminated Unicode strings,
returns the difference between the first mismatched Unicode characters. and returns the difference between the first mismatched Unicode characters.
This function compares the Null-terminated Unicode string FirstString to the This function compares the Null-terminated Unicode string FirstString to the
Null-terminated Unicode string SecondString. At most, Length Unicode Null-terminated Unicode string SecondString. At most, Length Unicode
@ -362,8 +361,8 @@ StrCat (
/** /**
Concatenates one Null-terminated Unicode string with a maximum length to the Concatenates up to a specified length one Null-terminated Unicode to the end
end of another Null-terminated Unicode string, and returns the concatenated of another Null-terminated Unicode string, and returns the concatenated
Unicode string. Unicode string.
This function concatenates two Null-terminated Unicode strings. The contents This function concatenates two Null-terminated Unicode strings. The contents
@ -733,7 +732,7 @@ IsHexDigit (
); );
/** /**
Convert one Null-terminated Unicode string to a Null-terminated Convert a Null-terminated Unicode string to a Null-terminated
ASCII string and returns the ASCII string. ASCII string and returns the ASCII string.
This function converts the content of the Unicode string Source This function converts the content of the Unicode string Source
@ -800,9 +799,8 @@ AsciiStrCpy (
/** /**
Copies one Null-terminated ASCII string with a maximum length to another Copies up to a specified length one Null-terminated ASCII string to another
Null-terminated ASCII string with a maximum length and returns the new ASCII Null-terminated ASCII string and returns the new ASCII string.
string.
This function copies the contents of the ASCII string Source to the ASCII This function copies the contents of the ASCII string Source to the ASCII
string Destination, and returns Destination. At most, Length ASCII characters string Destination, and returns Destination. At most, Length ASCII characters
@ -904,8 +902,8 @@ AsciiStrSize (
@param FirstString Pointer to a Null-terminated ASCII string. @param FirstString Pointer to a Null-terminated ASCII string.
@param SecondString Pointer to a Null-terminated ASCII string. @param SecondString Pointer to a Null-terminated ASCII string.
@retval 0 FirstString is identical to SecondString. @retval ==0 FirstString is identical to SecondString.
@return others FirstString is not identical to SecondString. @retval !=0 FirstString is not identical to SecondString.
**/ **/
INTN INTN
@ -939,9 +937,9 @@ AsciiStrCmp (
@param FirstString Pointer to a Null-terminated ASCII string. @param FirstString Pointer to a Null-terminated ASCII string.
@param SecondString Pointer to a Null-terminated ASCII string. @param SecondString Pointer to a Null-terminated ASCII string.
@retval 0 FirstString is identical to SecondString using case insensitive @retval ==0 FirstString is identical to SecondString using case insensitive
comparisons. comparisons.
@return others FirstString is not identical to SecondString using case @retval !=0 FirstString is not identical to SecondString using case
insensitive comparisons. insensitive comparisons.
**/ **/
@ -977,8 +975,8 @@ AsciiStriCmp (
@param SecondString Pointer to a Null-terminated ASCII string. @param SecondString Pointer to a Null-terminated ASCII string.
@param Length Maximum number of ASCII characters for compare. @param Length Maximum number of ASCII characters for compare.
@retval 0 FirstString is identical to SecondString. @retval ==0 FirstString is identical to SecondString.
@return others FirstString is not identical to SecondString. @retval !=0 FirstString is not identical to SecondString.
**/ **/
INTN INTN
@ -1026,9 +1024,9 @@ AsciiStrCat (
/** /**
Concatenates one Null-terminated ASCII string with a maximum length to the Concatenates up to a specified length one Null-terminated ASCII string to
end of another Null-terminated ASCII string, and returns the concatenated the end of another Null-terminated ASCII string, and returns the
ASCII string. concatenated ASCII string.
This function concatenates two Null-terminated ASCII strings. The contents This function concatenates two Null-terminated ASCII strings. The contents
of Null-terminated ASCII string Source are concatenated to the end of Null- of Null-terminated ASCII string Source are concatenated to the end of Null-
@ -1088,7 +1086,8 @@ AsciiStrnCat (
@param SearchString Pointer to a Null-terminated ASCII string to search for. @param SearchString Pointer to a Null-terminated ASCII string to search for.
@retval NULL If the SearchString does not appear in String. @retval NULL If the SearchString does not appear in String.
@return others If there is a match. @retval others If there is a match return the first occurrence of SearchingString.
If the lenth of SearchString is zero,return String.
**/ **/
CHAR8 * CHAR8 *
@ -1349,7 +1348,7 @@ BcdToDecimal8 (
@param ListHead The head note of a list to initiailize. @param ListHead The head note of a list to initiailize.
**/ **/
#define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&ListHead, &ListHead} #define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&(ListHead), &(ListHead)}
/** /**
@ -1384,7 +1383,8 @@ InitializeListHead (
If ListHead is NULL, then ASSERT(). If ListHead is NULL, then ASSERT().
If Entry is NULL, then ASSERT(). If Entry is NULL, then ASSERT().
If ListHead was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
of nodes in ListHead, including the ListHead node, is greater than or of nodes in ListHead, including the ListHead node, is greater than or
equal to PcdMaximumLinkedListLength, then ASSERT(). equal to PcdMaximumLinkedListLength, then ASSERT().
@ -1413,7 +1413,8 @@ InsertHeadList (
If ListHead is NULL, then ASSERT(). If ListHead is NULL, then ASSERT().
If Entry is NULL, then ASSERT(). If Entry is NULL, then ASSERT().
If ListHead was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
of nodes in ListHead, including the ListHead node, is greater than or of nodes in ListHead, including the ListHead node, is greater than or
equal to PcdMaximumLinkedListLength, then ASSERT(). equal to PcdMaximumLinkedListLength, then ASSERT().
@ -1437,11 +1438,12 @@ InsertTailList (
Retrieves the first node of a doubly linked list. Retrieves the first node of a doubly linked list.
Returns the first node of a doubly linked list. List must have been Returns the first node of a doubly linked list. List must have been
initialized with InitializeListHead(). If List is empty, then NULL is initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
returned. If List is empty, then List is returned.
If List is NULL, then ASSERT(). If List is NULL, then ASSERT().
If List was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and the number of nodes
in List, including the List node, is greater than or equal to in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT(). PcdMaximumLinkedListLength, then ASSERT().
@ -1462,13 +1464,14 @@ GetFirstNode (
/** /**
Retrieves the next node of a doubly linked list. Retrieves the next node of a doubly linked list.
Returns the node of a doubly linked list that follows Node. List must have Returns the node of a doubly linked list that follows Node.
been initialized with InitializeListHead(). If List is empty, then List is List must have been initialized with INTIALIZE_LIST_HEAD_VARIABLE()
returned. or InitializeListHead(). If List is empty, then List is returned.
If List is NULL, then ASSERT(). If List is NULL, then ASSERT().
If Node is NULL, then ASSERT(). If Node is NULL, then ASSERT().
If List was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and List contains more than
PcdMaximumLinkedListLenth nodes, then ASSERT(). PcdMaximumLinkedListLenth nodes, then ASSERT().
If Node is not a node in List, then ASSERT(). If Node is not a node in List, then ASSERT().
@ -1495,7 +1498,8 @@ GetNextNode (
zero nodes, this function returns TRUE. Otherwise, it returns FALSE. zero nodes, this function returns TRUE. Otherwise, it returns FALSE.
If ListHead is NULL, then ASSERT(). If ListHead is NULL, then ASSERT().
If ListHead was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and the number of nodes
in List, including the List node, is greater than or equal to in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT(). PcdMaximumLinkedListLength, then ASSERT().
@ -1520,11 +1524,12 @@ IsListEmpty (
Returns TRUE if Node is equal to List. Returns FALSE if Node is one of the 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 nodes in the doubly linked list specified by List. List must have been
initialized with InitializeListHead(). initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
If List is NULL, then ASSERT(). If List is NULL, then ASSERT().
If Node is NULL, then ASSERT(). If Node is NULL, then ASSERT().
If List was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and the number of nodes
in List, including the List node, is greater than or equal to in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT(). PcdMaximumLinkedListLength, then ASSERT().
@ -1550,11 +1555,12 @@ IsNull (
Returns TRUE if Node is the last node in the doubly linked list specified by 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 List. Otherwise, FALSE is returned. List must have been initialized with
InitializeListHead(). INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
If List is NULL, then ASSERT(). If List is NULL, then ASSERT().
If Node is NULL, then ASSERT(). If Node is NULL, then ASSERT().
If List was not initialized with InitializeListHead(), 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 If PcdMaximumLinkedListLenth is not zero, and the number of nodes
in List, including the List node, is greater than or equal to in List, including the List node, is greater than or equal to
PcdMaximumLinkedListLength, then ASSERT(). PcdMaximumLinkedListLength, then ASSERT().
@ -1583,8 +1589,8 @@ IsNodeAtEnd (
Otherwise, the location of the FirstEntry node is swapped with the location 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 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 same double linked list as FirstEntry and that double linked list must have
been initialized with InitializeListHead(). SecondEntry is returned after the been initialized with INTIALIZE_LIST_HEAD_VARIABLE() or InitializeListHead().
nodes are swapped. SecondEntry is returned after the nodes are swapped.
If FirstEntry is NULL, then ASSERT(). If FirstEntry is NULL, then ASSERT().
If SecondEntry is NULL, then ASSERT(). If SecondEntry is NULL, then ASSERT().
@ -1721,7 +1727,7 @@ ARShiftU64 (
@param Operand The 32-bit operand to rotate left. @param Operand The 32-bit operand to rotate left.
@param Count The number of bits to rotate left. @param Count The number of bits to rotate left.
@return Operand <<< Count @return Operand << Count
**/ **/
UINT32 UINT32
@ -1769,7 +1775,7 @@ RRotU32 (
@param Operand The 64-bit operand to rotate left. @param Operand The 64-bit operand to rotate left.
@param Count The number of bits to rotate left. @param Count The number of bits to rotate left.
@return Operand <<< Count @return Operand << Count
**/ **/
UINT64 UINT64
@ -1793,7 +1799,7 @@ LRotU64 (
@param Operand The 64-bit operand to rotate right. @param Operand The 64-bit operand to rotate right.
@param Count The number of bits to rotate right. @param Count The number of bits to rotate right.
@return Operand >>> Count @return Operand >> Count
**/ **/
UINT64 UINT64
@ -1813,7 +1819,7 @@ RRotU64 (
@param Operand The 32-bit operand to evaluate. @param Operand The 32-bit operand to evaluate.
@return Position of the lowest bit set in Operand if found. @retval 0-31 The lowest bit set in Operand was found.
@retval -1 Operand is zero. @retval -1 Operand is zero.
**/ **/
@ -1833,9 +1839,10 @@ LowBitSet32 (
@param Operand The 64-bit operand to evaluate. @param Operand The 64-bit operand to evaluate.
@return Position of the lowest bit set in Operand if found. @retval 0-63 The lowest bit set in Operand was found.
@retval -1 Operand is zero. @retval -1 Operand is zero.
**/ **/
INTN INTN
EFIAPI EFIAPI
@ -1854,7 +1861,7 @@ LowBitSet64 (
@param Operand The 32-bit operand to evaluate. @param Operand The 32-bit operand to evaluate.
@return Position of the highest bit set in Operand if found. @retval 0-31 Position of the highest bit set in Operand if found.
@retval -1 Operand is zero. @retval -1 Operand is zero.
**/ **/
@ -1875,7 +1882,7 @@ HighBitSet32 (
@param Operand The 64-bit operand to evaluate. @param Operand The 64-bit operand to evaluate.
@return Position of the highest bit set in Operand if found. @retval 0-63 Position of the highest bit set in Operand if found.
@retval -1 Operand is zero. @retval -1 Operand is zero.
**/ **/
@ -1888,7 +1895,7 @@ HighBitSet64 (
/** /**
Returns the value of the highest bit set in a 32-bit value. Equivalent to Returns the value of the highest bit set in a 32-bit value. Equivalent to
1 << HighBitSet32(x). 1 << log2(x).
This function computes the value of the highest bit set in the 32-bit value 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. specified by Operand. If Operand is zero, then zero is returned.
@ -1908,7 +1915,7 @@ GetPowerOfTwo32 (
/** /**
Returns the value of the highest bit set in a 64-bit value. Equivalent to Returns the value of the highest bit set in a 64-bit value. Equivalent to
1 << HighBitSet64(x). 1 << log2(x).
This function computes the value of the highest bit set in the 64-bit value 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. specified by Operand. If Operand is zero, then zero is returned.
@ -1935,7 +1942,7 @@ GetPowerOfTwo64 (
@param Value Operand A 16-bit unsigned value. @param Value Operand A 16-bit unsigned value.
@return The byte swaped Operand. @return The byte swapped Operand.
**/ **/
UINT16 UINT16
@ -1954,7 +1961,7 @@ SwapBytes16 (
@param Value Operand A 32-bit unsigned value. @param Value Operand A 32-bit unsigned value.
@return The byte swaped Operand. @return The byte swapped Operand.
**/ **/
UINT32 UINT32
@ -1973,7 +1980,7 @@ SwapBytes32 (
@param Value Operand A 64-bit unsigned value. @param Value Operand A 64-bit unsigned value.
@return The byte swaped Operand. @return The byte swapped Operand.
**/ **/
UINT64 UINT64
@ -2168,6 +2175,10 @@ DivU64x64Remainder (
NULL, then the 64-bit signed remainder is returned in Remainder. This NULL, then the 64-bit signed remainder is returned in Remainder. This
function returns the 64-bit signed quotient. 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(). If Divisor is 0, then ASSERT().
@param Dividend A 64-bit signed value. @param Dividend A 64-bit signed value.
@ -3264,7 +3275,7 @@ InterlockedCompareExchangePointer (
// //
/** /**
Calculate the sum of all elements in a buffer in unit of UINT8. Returns the sum of all elements in a buffer in unit of UINT8.
During calculation, the carry bits are dropped. During calculation, the carry bits are dropped.
This function calculates the sum of all elements in a buffer This function calculates the sum of all elements in a buffer
@ -3276,7 +3287,7 @@ InterlockedCompareExchangePointer (
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param Buffer Pointer to the buffer to carry out the sum operation. @param Buffer Pointer to the buffer to carry out the sum operation.
@param Length The size, in bytes, of Buffer . @param Length The size, in bytes, of Buffer.
@return Sum The sum of Buffer with carry bits dropped during additions. @return Sum The sum of Buffer with carry bits dropped during additions.
@ -3516,6 +3527,11 @@ MemoryFence (
If JumpBuffer is NULL, then ASSERT(). If JumpBuffer is NULL, then ASSERT().
For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT(). For IPF CPUs, 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. @param JumpBuffer A pointer to CPU context buffer.
@retval 0 Indicates a return from SetJump(). @retval 0 Indicates a return from SetJump().
@ -3719,7 +3735,6 @@ CpuDeadLoop (
VOID VOID
); );
#if defined (MDE_CPU_IPF) #if defined (MDE_CPU_IPF)
/** /**
@ -3793,6 +3808,8 @@ AsmFci (
/** /**
Reads the current value of a Processor Identifier Register (CPUID). 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 The Index of largest implemented CPUID (One less than the number of implemented CPUID
registers) is determined by CPUID [3] bits {7:0}. registers) is determined by CPUID [3] bits {7:0}.
No parameter checking is performed on Index. If the Index value is beyond the No parameter checking is performed on Index. If the Index value is beyond the
@ -4833,9 +4850,9 @@ AsmReadSp (
and -1 is returned. and -1 is returned.
This function is only available on IPF. This function is only available on IPF.
@return 1 The CPU is in virtual mode. @retval 1 The CPU is in virtual mode.
@return 0 The CPU is in physical mode. @retval 0 The CPU is in physical mode.
@return -1 The CPU is in mixed mode. @retval -1 The CPU is in mixed mode.
**/ **/
INT64 INT64
@ -4947,6 +4964,7 @@ PalCallStatic (
); );
#elif defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) #elif defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
/// ///
/// IA32 and X64 Specific Functions /// IA32 and X64 Specific Functions
@ -5302,7 +5320,8 @@ AsmReadMsr32 (
/** /**
Zero-extend a 32-bit value and writes it to a Machine Specific Register(MSR). Writes a 32-bit value to a Machine Specific Register(MSR), and returns the value.
The upper 32-bits of the MSR are set to zero.
Writes the 32-bit value specified by Value to the MSR specified by Index. The 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 upper 32-bits of the MSR write are set to zero. The 32-bit value written to
@ -6478,7 +6497,7 @@ AsmWriteGdtr (
/** /**
Reads the current Interrupt Descriptor Table Register(GDTR) descriptor. Reads the current Interrupt Descriptor Table Register(IDTR) descriptor.
Reads and returns the current IDTR descriptor and returns it in Idtr. This Reads and returns the current IDTR descriptor and returns it in Idtr. This
function is only available on IA-32 and X64. function is only available on IA-32 and X64.
@ -6496,7 +6515,7 @@ AsmReadIdtr (
/** /**
Writes the current Interrupt Descriptor Table Register(GDTR) descriptor. Writes the current Interrupt Descriptor Table Register(IDTR) descriptor.
Writes the current IDTR descriptor and returns it in Idtr. This function is Writes the current IDTR descriptor and returns it in Idtr. This function is
only available on IA-32 and X64. only available on IA-32 and X64.
@ -6530,7 +6549,7 @@ AsmReadLdtr (
/** /**
Writes the current Local Descriptor Table Register (GDTR) selector. Writes the current Local Descriptor Table Register (LDTR) selector.
Writes and the current LDTR descriptor specified by Ldtr. This function is Writes and the current LDTR descriptor specified by Ldtr. This function is
only available on IA-32 and X64. only available on IA-32 and X64.
@ -7081,7 +7100,7 @@ AsmDisablePaging32 (
If EntryPoint is 0, then ASSERT(). If EntryPoint is 0, then ASSERT().
If NewStack is 0, then ASSERT(). If NewStack is 0, then ASSERT().
@param CodeSelector The 16-bit selector to load in the CS before EntryPoint @param Cs The 16-bit selector to load in the CS before EntryPoint
is called. The descriptor in the GDT that this selector is called. The descriptor in the GDT that this selector
references must be setup for long mode. references must be setup for long mode.
@param EntryPoint The 64-bit virtual address of the function to call with @param EntryPoint The 64-bit virtual address of the function to call with
@ -7099,7 +7118,7 @@ AsmDisablePaging32 (
VOID VOID
EFIAPI EFIAPI
AsmEnablePaging64 ( AsmEnablePaging64 (
IN UINT16 CodeSelector, IN UINT16 Cs,
IN UINT64 EntryPoint, IN UINT64 EntryPoint,
IN UINT64 Context1, OPTIONAL IN UINT64 Context1, OPTIONAL
IN UINT64 Context2, OPTIONAL IN UINT64 Context2, OPTIONAL
@ -7122,7 +7141,7 @@ AsmEnablePaging64 (
If EntryPoint is 0, then ASSERT(). If EntryPoint is 0, then ASSERT().
If NewStack is 0, then ASSERT(). If NewStack is 0, then ASSERT().
@param CodeSelector The 16-bit selector to load in the CS before EntryPoint @param Cs The 16-bit selector to load in the CS before EntryPoint
is called. The descriptor in the GDT that this selector is called. The descriptor in the GDT that this selector
references must be setup for 32-bit protected mode. references must be setup for 32-bit protected mode.
@param EntryPoint The 64-bit virtual address of the function to call with @param EntryPoint The 64-bit virtual address of the function to call with
@ -7140,7 +7159,7 @@ AsmEnablePaging64 (
VOID VOID
EFIAPI EFIAPI
AsmDisablePaging64 ( AsmDisablePaging64 (
IN UINT16 CodeSelector, IN UINT16 Cs,
IN UINT32 EntryPoint, IN UINT32 EntryPoint,
IN UINT32 Context1, OPTIONAL IN UINT32 Context1, OPTIONAL
IN UINT32 Context2, OPTIONAL IN UINT32 Context2, OPTIONAL
@ -7203,11 +7222,47 @@ AsmPrepareThunk16 (
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.
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 AsmPrepareThunk16() must be called with ThunkContext before this function is used.
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 ThunkContext is NULL, then ASSERT().
If AsmPrepareThunk16() was not previously called with ThunkContext, 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().
@param ThunkContext A pointer to the context structure that describes the @param ThunkContext A pointer to the context structure that describes the
16-bit real mode code to call. 16-bit real mode code to call.
@ -7231,7 +7286,7 @@ AsmThunk16 (
real mode thunk, then it is more efficient if AsmPrepareThunk16() is called 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. once and AsmThunk16() can be called for each 16-bit real mode thunk.
If ThunkContext is NULL, then ASSERT(). See AsmPrepareThunk16() and AsmThunk16() for the detailed description and ASSERT() conditions.
@param ThunkContext A pointer to the context structure that describes the @param ThunkContext A pointer to the context structure that describes the
16-bit real mode code to call. 16-bit real mode code to call.