Functions | |
UINT64 EFIAPI | InternalMathLShiftU64 (IN UINT64 Operand, IN UINTN Count) |
UINT64 EFIAPI | InternalMathRShiftU64 (IN UINT64 Operand, IN UINTN Count) |
UINT64 EFIAPI | InternalMathARShiftU64 (IN UINT64 Operand, IN UINTN Count) |
UINT64 EFIAPI | InternalMathLRotU64 (IN UINT64 Operand, IN UINTN Count) |
UINT64 EFIAPI | InternalMathRRotU64 (IN UINT64 Operand, IN UINTN Count) |
UINT64 EFIAPI | InternalMathSwapBytes64 (IN UINT64 Operand) |
UINT64 EFIAPI | InternalMathMultU64x32 (IN UINT64 Multiplicand, IN UINT32 Multiplier) |
UINT64 EFIAPI | InternalMathMultU64x64 (IN UINT64 Multiplicand, IN UINT64 Multiplier) |
UINT64 EFIAPI | InternalMathDivU64x32 (IN UINT64 Dividend, IN UINT32 Divisor) |
UINT32 EFIAPI | InternalMathModU64x32 (IN UINT64 Dividend, IN UINT32 Divisor) |
UINT64 EFIAPI | InternalMathDivRemU64x32 (IN UINT64 Dividend, IN UINT32 Divisor, OUT UINT32 *Remainder) |
UINT64 EFIAPI | InternalMathDivRemU64x64 (IN UINT64 Dividend, IN UINT64 Divisor, OUT UINT64 *Remainder) |
INT64 EFIAPI | InternalMathDivRemS64x64 (IN INT64 Dividend, IN INT64 Divisor, OUT INT64 *Remainder) |
VOID EFIAPI | InternalSwitchStack (IN SWITCH_STACK_ENTRY_POINT EntryPoint, IN VOID *Context1, IN VOID *Context2, IN VOID *NewStack, IN VA_LIST Marker) |
BOOLEAN EFIAPI | IsNodeInList (IN CONST LIST_ENTRY *List, IN CONST LIST_ENTRY *Node) |
UINTN EFIAPI | BitFieldReadUint (IN UINTN Operand, IN UINTN StartBit, IN UINTN EndBit) |
UINTN EFIAPI | BitFieldOrUint (IN UINTN Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINTN OrData) |
UINTN EFIAPI | BitFieldAndUint (IN UINTN Operand, IN UINTN StartBit, IN UINTN EndBit, IN UINTN AndData) |
VOID EFIAPI | InternalAssertJumpBuffer (IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer) |
VOID EFIAPI | InternalLongJump (IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, IN UINTN Value) |
VOID EFIAPI | InternalX86ReadGdtr (OUT IA32_DESCRIPTOR *Gdtr) |
VOID EFIAPI | InternalX86WriteGdtr (IN CONST IA32_DESCRIPTOR *Gdtr) |
VOID EFIAPI | InternalX86ReadIdtr (OUT IA32_DESCRIPTOR *Idtr) |
VOID EFIAPI | InternalX86WriteIdtr (IN CONST IA32_DESCRIPTOR *Idtr) |
VOID EFIAPI | InternalX86FxSave (OUT IA32_FX_BUFFER *Buffer) |
VOID EFIAPI | InternalX86FxRestore (IN CONST IA32_FX_BUFFER *Buffer) |
VOID EFIAPI | InternalX86EnablePaging32 (IN SWITCH_STACK_ENTRY_POINT EntryPoint, IN VOID *Context1, IN VOID *Context2, IN VOID *NewStack) |
VOID EFIAPI | InternalX86DisablePaging32 (IN SWITCH_STACK_ENTRY_POINT EntryPoint, IN VOID *Context1, IN VOID *Context2, IN VOID *NewStack) |
VOID EFIAPI | InternalX86EnablePaging64 (IN UINT16 Cs, IN UINT64 EntryPoint, IN UINT64 Context1, IN UINT64 Context2, IN UINT64 NewStack) |
VOID EFIAPI | InternalX86DisablePaging64 (IN UINT16 Cs, IN UINT32 EntryPoint, IN UINT32 Context1, IN UINT32 Context2, IN UINT32 NewStack) |
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
UINTN EFIAPI BitFieldAndUint | ( | IN UINTN | Operand, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINTN | AndData | |||
) |
Worker function that reads a bit field from Operand, 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 value is returned.
Operand | Operand on which to perform the bitfield operation. | |
StartBit | The ordinal of the least significant bit in the bit field. | |
EndBit | The ordinal of the most significant bit in the bit field. | |
AndData | The value to And with the read value from the value |
UINTN EFIAPI BitFieldOrUint | ( | IN UINTN | Operand, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit, | |||
IN UINTN | OrData | |||
) |
Worker function that reads a bit field from Operand, 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 AndData. All other bits in Operand are preserved. The new value is returned.
Operand | Operand on which to perform the bitfield operation. | |
StartBit | The ordinal of the least significant bit in the bit field. | |
EndBit | The ordinal of the most significant bit in the bit field. | |
OrData | The value to OR with the read value from the value |
UINTN EFIAPI BitFieldReadUint | ( | IN UINTN | Operand, | |
IN UINTN | StartBit, | |||
IN UINTN | EndBit | |||
) |
Worker function that returns a bit field from Operand.
Returns the bitfield specified by the StartBit and the EndBit from Operand.
Operand | Operand on which to perform the bitfield operation. | |
StartBit | The ordinal of the least significant bit in the bit field. | |
EndBit | The ordinal of the most significant bit in the bit field. |
VOID EFIAPI InternalAssertJumpBuffer | ( | IN BASE_LIBRARY_JUMP_BUFFER * | JumpBuffer | ) |
Worker function that checks ASSERT condition for JumpBuffer
Checks ASSERT condition for JumpBuffer.
If JumpBuffer is NULL, then ASSERT(). For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
JumpBuffer | A pointer to CPU context buffer. |
Referenced by _declspec(), LongJump(), and SetJump().
VOID EFIAPI InternalLongJump | ( | IN BASE_LIBRARY_JUMP_BUFFER * | JumpBuffer, | |
IN UINTN | Value | |||
) |
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.
JumpBuffer | A pointer to CPU context buffer. | |
Value | The value to return when the SetJump() context is restored. |
Restores the CPU context from the buffer specified by JumpBuffer. This function never returns to the caller. Instead it resumes execution based on the state of JumpBuffer.
JumpBuffer | A pointer to CPU context buffer. | |
Value | The value to return when the SetJump() context is restored. |
Referenced by LongJump().
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.
Operand | The 64-bit operand to shift right. | |
Count | The number of bits to shift right. |
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.
Operand | The 64-bit operand to shift right. | |
Count | The number of bits to shift right. |
Referenced by ARShiftU64().
INT64 EFIAPI InternalMathDivRemS64x64 | ( | IN INT64 | Dividend, | |
IN INT64 | Divisor, | |||
OUT INT64 * | Remainder | |||
) |
Divides a 64-bit signed integer by a 64-bit signed integer and generates a 64-bit signed result and an 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.
Dividend | A 64-bit signed value. | |
Divisor | A 64-bit signed value. | |
Remainder | A pointer to a 64-bit signed value. This parameter is optional and may be NULL. |
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.
Dividend | A 64-bit signed value. | |
Divisor | A 64-bit signed value. | |
Remainder | A pointer to a 64-bit signed value. This parameter is optional and may be NULL. |
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.
Dividend | A 64-bit signed value. | |
Divisor | A 64-bit signed value. | |
Remainder | A pointer to a 64-bit signed value. This parameter is optional and may be NULL. |
References InternalMathDivRemU64x64(), and NULL.
Referenced by DivS64x64Remainder().
UINT64 EFIAPI InternalMathDivRemU64x32 | ( | IN UINT64 | Dividend, | |
IN UINT32 | Divisor, | |||
OUT UINT32 * | Remainder | |||
) |
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 32-bit unsigned value. | |
Remainder | A pointer to a 32-bit unsigned value. This parameter is optional and may be NULL. |
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 32-bit unsigned value. | |
Remainder | A pointer to a 32-bit unsigned value. This parameter is optional and may be NULL. |
References eax, ecx, edx, mov, and NULL.
Referenced by DivU64x32Remainder().
UINT64 EFIAPI InternalMathDivRemU64x64 | ( | IN UINT64 | Dividend, | |
IN UINT64 | Divisor, | |||
OUT UINT64 * | Remainder | |||
) |
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 64-bit unsigned value. | |
Remainder | A pointer to a 64-bit unsigned value. This parameter is optional and may be NULL. |
References NULL.
Referenced by DivU64x64Remainder(), and InternalMathDivRemS64x64().
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 32-bit unsigned value. |
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 32-bit unsigned value. |
References eax, ecx, edx, and mov.
Referenced by DivU64x32().
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 filled with the high Count bits of Operand. The rotated value is returned.
Operand | The 64-bit operand to rotate left. | |
Count | The number of bits to rotate left. |
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.
Operand | The 64-bit operand to rotate left. | |
Count | The number of bits to rotate left. |
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.
Operand | The 64-bit operand to rotate left. | |
Count | The number of bits to rotate left. |
References eax, ebx, ecx, edx, and mov.
Referenced by LRotU64().
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.
Operand | The 64-bit operand to shift left. | |
Count | The number of bits to shift left. |
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.
Operand | The 64-bit operand to shift left. | |
Count | The number of bits to shift left. |
Referenced by LShiftU64().
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 32-bit unsigned value. |
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.
Dividend | A 64-bit unsigned value. | |
Divisor | A 32-bit unsigned value. |
References eax, ecx, edx, and mov.
Referenced by ModU64x32().
Multiplies a 64-bit unsigned integer by a 32-bit unsigned integer and generates a 64-bit unsigned result.
This function multiplies 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.
Multiplicand | A 64-bit unsigned value. | |
Multiplier | A 32-bit unsigned value. |
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.
Multiplicand | A 64-bit unsigned value. | |
Multiplier | A 32-bit unsigned value. |
References eax, ecx, edx, and mov.
Referenced by MultU64x32().
Multiplies 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.
Multiplicand | A 64-bit unsigned value. | |
Multiplier | A 64-bit unsigned value. |
This function multiplies 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.
Multiplicand | A 64-bit unsigned value. | |
Multiplier | A 64-bit unsigned value. |
This function multiplies 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.
Multiplicand | A 64-bit unsigned value. | |
Multiplier | A 64-bit unsigned value. |
References eax, ebx, ecx, edx, and mov.
Referenced by MultU64x64().
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 filled with the low Count bits of Operand. The rotated value is returned.
Operand | The 64-bit operand to rotate right. | |
Count | The number of bits to rotate right. |
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.
Operand | The 64-bit operand to rotate right. | |
Count | The number of bits to rotate right. |
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.
Operand | The 64-bit operand to rotate right. | |
Count | The number of bits to rotate right. |
References eax, ebx, ecx, edx, and mov.
Referenced by RRotU64().
Shifts a 64-bit integer right between 0 and 63 bits. The 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.
Operand | The 64-bit operand to shift right. | |
Count | The number of bits to shift right. |
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.
Operand | The 64-bit operand to shift right. | |
Count | The number of bits to shift right. |
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.
Operand | The 64-bit operand to shift right. | |
Count | The number of bits to shift right. |
Referenced by RShiftU64().
Switches the endianess 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.
Operand | A 64-bit unsigned value. |
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.
Operand | A 64-bit unsigned value. |
References eax, edx, mov, and SwapBytes32().
Referenced by SwapBytes64().
VOID EFIAPI InternalSwitchStack | ( | IN SWITCH_STACK_ENTRY_POINT | EntryPoint, | |
IN VOID * | Context1, | |||
IN VOID * | Context2, | |||
IN VOID * | NewStack, | |||
IN VA_LIST | Marker | |||
) |
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. Marker will be ignored on IA-32, x64, and EBC. IPF CPUs 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().
EntryPoint | A pointer to function to call with the new stack. | |
Context1 | A pointer to the context to pass into the EntryPoint function. | |
Context2 | A pointer to the context to pass into the EntryPoint function. | |
NewStack | A pointer to the new stack to use for the EntryPoint function. | |
Marker | VA_LIST marker for the variable argument list. |
Transfers control to the function specified by EntryPoint using the new stack specified by NewStack, and passes in the parameters specified by Context1 and Context2. Context1 and Context2 are optional and may be NULL. The function EntryPoint must never return. Marker will be ignored on IA-32, x64, and EBC. IPF CPUs 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().
EntryPoint | A pointer to function to call with the new stack. | |
Context1 | A pointer to the context to pass into the EntryPoint function. | |
Context2 | A pointer to the context to pass into the EntryPoint function. | |
NewStack | A pointer to the new stack to use for the EntryPoint function. | |
Marker | A VA_LIST marker for the variable argument list. |
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. Marker will be ignored on IA-32, x64, and EBC. IPF CPUs 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().
EntryPoint | A pointer to function to call with the new stack. | |
Context1 | A pointer to the context to pass into the EntryPoint function. | |
Context2 | A pointer to the context to pass into the EntryPoint function. | |
NewStack | A pointer to the new stack to use for the EntryPoint function. | |
Marker | A VA_LIST marker for the variable argument list. |
References ASSERT, CPU_STACK_ALIGNMENT, BASE_LIBRARY_JUMP_BUFFER::Eip, BASE_LIBRARY_JUMP_BUFFER::Esp, InternalSwitchStackAsm(), LongJump(), VA_ARG, and VOID.
Referenced by SwitchStack().
VOID EFIAPI InternalX86DisablePaging32 | ( | IN SWITCH_STACK_ENTRY_POINT | EntryPoint, | |
IN VOID * | Context1, | |||
IN VOID * | Context2, | |||
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.
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.
EntryPoint | A pointer to function to call with the new stack after paging is disabled. | |
Context1 | A pointer to the context to pass into the EntryPoint function as the first parameter after paging is disabled. | |
Context2 | A pointer to the context to pass into the EntryPoint function as the second parameter after paging is disabled. | |
NewStack | A pointer to the new stack to use for the EntryPoint function after paging is disabled. |
Referenced by AsmDisablePaging32().
VOID EFIAPI InternalX86DisablePaging64 | ( | IN UINT16 | CodeSelector, | |
IN UINT32 | EntryPoint, | |||
IN UINT32 | Context1, | |||
IN UINT32 | Context2, | |||
IN UINT32 | 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.
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. | |
EntryPoint | The 64-bit virtual address of the function to call with the new stack after paging is disabled. | |
Context1 | The 64-bit virtual address of the context to pass into the EntryPoint function as the first parameter after paging is disabled. | |
Context2 | The 64-bit virtual address of the context to pass into the EntryPoint function as the second parameter after paging is disabled. | |
NewStack | The 64-bit virtual address of the new stack to use for the EntryPoint function after paging is disabled. |
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.
CodeSelector | 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. | |
EntryPoint | The 64-bit virtual address of the function to call with the new stack after paging is disabled. | |
Context1 | The 64-bit virtual address of the context to pass into the EntryPoint function as the first parameter after paging is disabled. | |
Context2 | The 64-bit virtual address of the context to pass into the EntryPoint function as the second parameter after paging is disabled. | |
NewStack | The 64-bit virtual address of the new stack to use for the EntryPoint function after paging is disabled. |
Referenced by AsmDisablePaging64().
VOID EFIAPI InternalX86EnablePaging32 | ( | IN SWITCH_STACK_ENTRY_POINT | EntryPoint, | |
IN VOID * | Context1, | |||
IN VOID * | Context2, | |||
IN VOID * | NewStack | |||
) |
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.
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.
EntryPoint | A pointer to function to call with the new stack after paging is enabled. | |
Context1 | A pointer to the context to pass into the EntryPoint function as the first parameter after paging is enabled. | |
Context2 | A pointer to the context to pass into the EntryPoint function as the second parameter after paging is enabled. | |
NewStack | A pointer to the new stack to use for the EntryPoint function after paging is enabled. |
Referenced by AsmEnablePaging32().
VOID EFIAPI InternalX86EnablePaging64 | ( | IN UINT16 | Cs, | |
IN UINT64 | EntryPoint, | |||
IN UINT64 | Context1, | |||
IN UINT64 | Context2, | |||
IN UINT64 | 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.
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. | |
EntryPoint | The 64-bit virtual address of the function to call with the new stack after paging is enabled. | |
Context1 | The 64-bit virtual address of the context to pass into the EntryPoint function as the first parameter after paging is enabled. | |
Context2 | The 64-bit virtual address of the context to pass into the EntryPoint function as the second parameter after paging is enabled. | |
NewStack | The 64-bit virtual address of the new stack to use for the EntryPoint function after paging is enabled. |
Referenced by AsmEnablePaging64().
VOID EFIAPI InternalX86FxRestore | ( | IN CONST 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.
Buffer | The pointer to a buffer to save the floating point/SSE/SSE2 context. |
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.
Buffer | The pointer to a buffer to save the floating point/SSE/SSE2 context. |
Referenced by AsmFxRestore().
VOID EFIAPI InternalX86FxSave | ( | OUT IA32_FX_BUFFER * | Buffer | ) |
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.
Buffer | The pointer to a buffer to save the floating point/SSE/SSE2 context. |
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.
Buffer | The pointer to a buffer to save the floating point/SSE/SSE2 context. |
Referenced by AsmFxSave().
VOID EFIAPI InternalX86ReadGdtr | ( | OUT IA32_DESCRIPTOR * | Gdtr | ) |
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.
Gdtr | The pointer to a GDTR descriptor. |
Reads and returns the current GDTR descriptor and returns it in Gdtr. This function is only available on IA-32 and X64.
Gdtr | The pointer to a GDTR descriptor. |
Referenced by AsmReadGdtr().
VOID EFIAPI InternalX86ReadIdtr | ( | OUT IA32_DESCRIPTOR * | Idtr | ) |
Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.
Reads and returns the current IDTR descriptor and returns it in Idtr. This function is only available on IA-32 and x64.
Idtr | The pointer to an IDTR descriptor. |
Reads and returns the current IDTR descriptor and returns it in Idtr. This function is only available on IA-32 and X64.
Idtr | The pointer to a IDTR descriptor. |
Reads and returns the current IDTR descriptor and returns it in Idtr. This function is only available on IA-32 and x64.
Idtr | The pointer to a IDTR descriptor. |
Referenced by AsmReadIdtr().
VOID EFIAPI InternalX86WriteGdtr | ( | IN CONST 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.
Gdtr | The pointer to a GDTR descriptor. |
Writes and the current GDTR descriptor specified by Gdtr. This function is only available on IA-32 and X64.
Gdtr | The pointer to a GDTR descriptor. |
Referenced by AsmWriteGdtr().
VOID EFIAPI InternalX86WriteIdtr | ( | IN CONST IA32_DESCRIPTOR * | Idtr | ) |
Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.
Writes the current IDTR descriptor and returns it in Idtr. This function is only available on IA-32 and x64.
Idtr | The pointer to an IDTR descriptor. |
Writes the current IDTR descriptor and returns it in Idtr. This function is only available on IA-32 and X64.
Idtr | The pointer to a IDTR descriptor. |
Writes the current IDTR descriptor and returns it in Idtr. This function is only available on IA-32 and x64.
Idtr | The pointer to a IDTR descriptor. |
Referenced by AsmWriteIdtr().
BOOLEAN EFIAPI IsNodeInList | ( | IN CONST LIST_ENTRY * | List, | |
IN CONST LIST_ENTRY * | Node | |||
) |
Worker function that locates the Node in the List.
By searching the List, finds the location of the Node in List. At the same time, verifies the validity of this list.
If List is NULL, then ASSERT(). If List->ForwardLink is NULL, then ASSERT(). If List->backLink is NULL, then ASSERT(). If Node is NULL, then ASSERT(); If PcdMaximumLinkedListLength is not zero, and prior to insertion the number of nodes in ListHead, including the ListHead node, is greater than or equal to PcdMaximumLinkedListLength, then ASSERT().
List | A pointer to a node in a linked list. | |
Node | A pointer to one nod. |
TRUE | Node is in List. | |
FALSE | Node isn't in List, or List is invalid. |