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1. added functions header for BaseUefiDecompressLi

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2. added some internal functions header for BaseLib
3. added EFIAPI for some internal assembly files declare

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1050 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2006-07-19 17:37:07 +00:00
parent ebfe209ec0
commit 1ea5ca46c7
26 changed files with 1268 additions and 62 deletions
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51
MdePkg/Library/BaseLib/BitField.c
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@ -14,8 +14,19 @@
**/
/**
Worker function that returns a bit field from Operand
Returns the bitfield specified by the StartBit and the EndBit from Operand.
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@param EndBit The ordinal of the most significant bit in the bit field.
@return The bit field read.
**/
unsigned int
EFIAPI
BitFieldReadUint (
IN unsigned int Operand,
IN UINTN StartBit,
@ -29,8 +40,23 @@ BitFieldReadUint (
return (Operand & ~((unsigned int)-2 << EndBit)) >> StartBit;
}
/**
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.
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@param EndBit The ordinal of the most significant bit in the bit field.
@param OrData The value to OR with the read value from the value
@return The new value.
**/
unsigned int
EFIAPI
BitFieldOrUint (
IN unsigned int Operand,
IN UINTN StartBit,
@ -42,11 +68,26 @@ BitFieldOrUint (
// ~((unsigned int)-2 << EndBit) is a mask in which bit[0] thru bit[EndBit]
// are 1's while bit[EndBit + 1] thru the most significant bit are 0's.
//
return Operand | ((OrData << StartBit) & ~((unsigned int)-2 << EndBit));
return Operand | ((OrData << StartBit) & ~((unsigned int) -2 << EndBit));
}
/**
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.
@param Operand Operand on which to perform the bitfield operation.
@param StartBit The ordinal of the least significant bit in the bit field.
@param EndBit The ordinal of the most significant bit in the bit field.
@param AndData The value to And with the read value from the value
@return The new value.
**/
unsigned int
EFIAPI
BitFieldAndUint (
IN unsigned int Operand,
IN UINTN StartBit,
@ -58,7 +99,7 @@ BitFieldAndUint (
// ~((unsigned int)-2 << EndBit) is a mask in which bit[0] thru bit[EndBit]
// are 1's while bit[EndBit + 1] thru the most significant bit are 0's.
//
return Operand & ~((~AndData << StartBit) & ~((unsigned int)-2 << EndBit));
return Operand & ~((~AndData << StartBit) & ~((unsigned int) -2 << EndBit));
}
/**