X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FInclude%2FBase.h;h=4613ea011d0e38a1904a34e79aba0d3b2f2a7a3c;hp=a2c5511750e75a5df0591604a1de4fabec3cabf8;hb=62991af27f84e5f20e55dee6e1f90eb77ec5325e;hpb=a7cc3d261c0572739c0587af1a339237b7947159
diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index a2c5511750..4613ea011d 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -6,7 +6,7 @@
environment. There are a set of base libraries in the Mde Package that can
be used to implement base modules.
-Copyright (c) 2006 - 2008, Intel Corporation
+Copyright (c) 2006 - 2008, 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
@@ -26,6 +26,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
//
#include
+
+//
+// 128 bit buffer containing a unique identifier value.
+// Unless otherwise specified, aligned on a 64 bit boundary.
+//
typedef struct {
UINT32 Data1;
UINT16 Data2;
@@ -33,10 +38,13 @@ typedef struct {
UINT8 Data4[8];
} GUID;
+//
+// 8-bytes unsigned value that represents a physical system address.
+//
typedef UINT64 PHYSICAL_ADDRESS;
///
-/// LIST_ENTRY definition
+/// LIST_ENTRY definition.
///
typedef struct _LIST_ENTRY LIST_ENTRY;
@@ -46,7 +54,7 @@ struct _LIST_ENTRY {
};
//
-// Modifiers to absract standard types to aid in debug of problems
+// Modifiers to abstract standard types to aid in debug of problems
//
#define CONST const
#define STATIC static
@@ -67,8 +75,12 @@ struct _LIST_ENTRY {
#define TRUE ((BOOLEAN)(1==1))
#define FALSE ((BOOLEAN)(0==1))
+//
+// NULL pointer (VOID *)
+//
#define NULL ((VOID *) 0)
+
#define BIT0 0x00000001
#define BIT1 0x00000002
#define BIT2 0x00000004
@@ -101,49 +113,49 @@ struct _LIST_ENTRY {
#define BIT29 0x20000000
#define BIT30 0x40000000
#define BIT31 0x80000000
-#define BIT32 0x0000000100000000UL
-#define BIT33 0x0000000200000000UL
-#define BIT34 0x0000000400000000UL
-#define BIT35 0x0000000800000000UL
-#define BIT36 0x0000001000000000UL
-#define BIT37 0x0000002000000000UL
-#define BIT38 0x0000004000000000UL
-#define BIT39 0x0000008000000000UL
-#define BIT40 0x0000010000000000UL
-#define BIT41 0x0000020000000000UL
-#define BIT42 0x0000040000000000UL
-#define BIT43 0x0000080000000000UL
-#define BIT44 0x0000100000000000UL
-#define BIT45 0x0000200000000000UL
-#define BIT46 0x0000400000000000UL
-#define BIT47 0x0000800000000000UL
-#define BIT48 0x0001000000000000UL
-#define BIT49 0x0002000000000000UL
-#define BIT50 0x0004000000000000UL
-#define BIT51 0x0008000000000000UL
-#define BIT52 0x0010000000000000UL
-#define BIT53 0x0020000000000000UL
-#define BIT54 0x0040000000000000UL
-#define BIT55 0x0080000000000000UL
-#define BIT56 0x0100000000000000UL
-#define BIT57 0x0200000000000000UL
-#define BIT58 0x0400000000000000UL
-#define BIT59 0x0800000000000000UL
-#define BIT60 0x1000000000000000UL
-#define BIT61 0x2000000000000000UL
-#define BIT62 0x4000000000000000UL
-#define BIT63 0x8000000000000000UL
+#define BIT32 0x0000000100000000ULL
+#define BIT33 0x0000000200000000ULL
+#define BIT34 0x0000000400000000ULL
+#define BIT35 0x0000000800000000ULL
+#define BIT36 0x0000001000000000ULL
+#define BIT37 0x0000002000000000ULL
+#define BIT38 0x0000004000000000ULL
+#define BIT39 0x0000008000000000ULL
+#define BIT40 0x0000010000000000ULL
+#define BIT41 0x0000020000000000ULL
+#define BIT42 0x0000040000000000ULL
+#define BIT43 0x0000080000000000ULL
+#define BIT44 0x0000100000000000ULL
+#define BIT45 0x0000200000000000ULL
+#define BIT46 0x0000400000000000ULL
+#define BIT47 0x0000800000000000ULL
+#define BIT48 0x0001000000000000ULL
+#define BIT49 0x0002000000000000ULL
+#define BIT50 0x0004000000000000ULL
+#define BIT51 0x0008000000000000ULL
+#define BIT52 0x0010000000000000ULL
+#define BIT53 0x0020000000000000ULL
+#define BIT54 0x0040000000000000ULL
+#define BIT55 0x0080000000000000ULL
+#define BIT56 0x0100000000000000ULL
+#define BIT57 0x0200000000000000ULL
+#define BIT58 0x0400000000000000ULL
+#define BIT59 0x0800000000000000ULL
+#define BIT60 0x1000000000000000ULL
+#define BIT61 0x2000000000000000ULL
+#define BIT62 0x4000000000000000ULL
+#define BIT63 0x8000000000000000ULL
//
// Support for variable length argument lists using the ANSI standard.
//
-// Since we are using the ANSI standard we used the standard nameing and
-// did not folow the coding convention
+// Since we are using the ANSI standard we used the standard naming and
+// did not follow the coding convention
//
// VA_LIST - typedef for argument list.
// VA_START (VA_LIST Marker, argument before the ...) - Init Marker for use.
// VA_END (VA_LIST Marker) - Clear Marker
-// VA_ARG (VA_LIST Marker, var arg size) - Use Marker to get an argumnet from
+// VA_ARG (VA_LIST Marker, var arg size) - Use Marker to get an argument from
// the ... list. You must know the size and pass it in this macro.
//
// example:
@@ -177,54 +189,167 @@ struct _LIST_ENTRY {
#define _INT_SIZE_OF(n) ((sizeof (n) + sizeof (UINTN) - 1) &~(sizeof (UINTN) - 1))
//
-// Also support coding convention rules for var arg macros
+// Pointer to the start of a variable argument list. Same as UINT8 *.
//
typedef CHAR8 *VA_LIST;
-#define VA_START(ap, v) (ap = (VA_LIST) & (v) + _INT_SIZE_OF (v))
-#define VA_ARG(ap, t) (*(t *) ((ap += _INT_SIZE_OF (t)) - _INT_SIZE_OF (t)))
-#define VA_END(ap) (ap = (VA_LIST) 0)
-//
-// Macro that returns the byte offset of a field in a data structure.
-//
+/**
+ Retrieves a pointer to the beginning of a variable argument list based on
+ the name of the parameter that immediately precedes the variable argument list.
+
+ This function initializes Marker to point to the beginning of the variable argument
+ list that immediately follows Parameter. The method for computing the pointer to the
+ next argument in the argument list is CPU specific following the EFIAPI ABI.
+
+ @param Marker Pointer to the beginning of the variable argument list.
+ @param Parameter The name of the parameter that immediately precedes
+ the variable argument list.
+
+ @return A pointer to the beginning of a variable argument list.
+
+**/
+#define VA_START(Marker, Parameter) (Marker = (VA_LIST) & (Parameter) + _INT_SIZE_OF (Parameter))
+
+/**
+ Returns an argument of a specified type from a variable argument list and updates
+ the pointer to the variable argument list to point to the next argument.
+
+ This function returns an argument of the type specified by TYPE from the beginning
+ of the variable argument list specified by Marker. Marker is then updated to point
+ to the next argument in the variable argument list. The method for computing the
+ pointer to the next argument in the argument list is CPU specific following the EFIAPI ABI.
+
+ @param Marker Pointer to the beginning of a variable argument list.
+ @param TYPE The type of argument to retrieve from the beginning
+ of the variable argument list.
+
+ @return An argument of the type specified by TYPE.
+
+**/
+#define VA_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _INT_SIZE_OF (TYPE)) - _INT_SIZE_OF (TYPE)))
+
+/**
+ Terminates the use of a variable argument list.
+
+ This function initializes Marker so it can no longer be used with VA_ARG().
+ After this macro is used, the only way to access the variable argument list again is
+ by using VA_START() again.
+
+ @param Marker The variable to set to the beginning of the variable argument list.
+
+**/
+#define VA_END(Marker) (Marker = (VA_LIST) 0)
+
+/**
+ Macro that returns the byte offset of a field in a data structure.
+
+ This function returns the offset, in bytes, of field specified by Field from the
+ beginning of the data structure specified by TYPE. If TYPE does not contain Field,
+ the module will not compile.
+
+ @param TYPE The name of the data structure that contains the field specified by Field.
+ @param Field The name of the field in the data structure.
+
+ @return Offset, in bytes, of field.
+
+**/
#define OFFSET_OF(TYPE, Field) ((UINTN) &(((TYPE *)0)->Field))
-///
-/// CONTAINING_RECORD - returns a pointer to the structure
-/// from one of it's elements.
-///
+/**
+ Macro that returns a pointer to the data structure that contains a specified field of
+ that data structure. This is a lightweight method to hide information by placing a
+ public data structure inside a larger private data structure and using a pointer to
+ the public data structure to retrieve a pointer to the private data structure.
+
+ This function computes the offset, in bytes, of field specified by Field from the beginning
+ of the data structure specified by TYPE. This offset is subtracted from Record, and is
+ used to return a pointer to a data structure of the type specified by TYPE.If the data type
+ specified by TYPE does not contain the field specified by Field, then the module will not compile.
+
+ @param Record Pointer to the field specified by Field within a data structure of type TYPE.
+ @param TYPE The name of the data structure type to return. This data structure must
+ contain the field specified by Field.
+ @param Field The name of the field in the data structure specified by TYPE to which Record points.
+
+ @return A pointer to the structure from one of it's elements.
+
+**/
#define _CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
-///
-/// ALIGN_VALUE - aligns a value up to the next boundary of the given alignment.
-///
+/**
+ Rounds a value up to the next boundary using a specified alignment.
+
+ This function rounds Value up to the next boundary using the specified Alignment.
+ This aligned value is returned.
+
+ @param Value The value to round up.
+ @param Alignment The alignment boundary used to return the aligned value.
+
+ @return A value up to the next boundary.
+
+**/
#define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1)))
-///
-/// ALIGN_POINTER - aligns a pointer to the lowest boundry
-///
+/**
+ Adjust a pointer by adding the minimum offset required for it to be aligned on
+ a specified alignment boundary.
+
+ This function rounds the pointer specified by Pointer to the next alignment boundary
+ specified by Alignment. The pointer to the aligned address is returned.
+
+ @param Value The value to round up.
+ @param Alignment The alignment boundary to use to return an aligned pointer.
+
+ @return Pointer to the aligned address.
+
+**/
#define ALIGN_POINTER(Pointer, Alignment) ((VOID *) (ALIGN_VALUE ((UINTN)(Pointer), (Alignment))))
-///
-/// ALIGN_VARIABLE - aligns a variable up to the next natural boundry for int size of a processor
-///
+/**
+ Rounds a value up to the next natural boundary for the current CPU.
+ This is 4-bytes for 32-bit CPUs and 8-bytes for 64-bit CPUs.
+
+ This function rounds the value specified by Value up to the next natural boundary for the
+ current CPU. This rounded value is returned.
+
+ @param Value The value to round up.
+
+ @return Rounded value specified by Value.
+
+**/
#define ALIGN_VARIABLE(Value) ALIGN_VALUE ((Value), sizeof (UINTN))
-//
-// Return the maximum of two operands.
-// This macro returns the maximum of two operand specified by a and b.
-// Both a and b must be the same numerical types, signed or unsigned.
-//
+/**
+ Return the maximum of two operands.
+
+ This macro returns the maximum of two operand specified by a and b.
+ Both a and b must be the same numerical types, signed or unsigned.
+
+ @param TYPE Any numerical data types.
+ @param a The first operand with any numerical type.
+ @param b The second operand. It should be the same any numerical type with a.
+
+ @return Maximum of two operands.
+
+**/
#define MAX(a, b) \
(((a) > (b)) ? (a) : (b))
+/**
+ Return the minimum of two operands.
+
+ This macro returns the minimal of two operand specified by a and b.
+ Both a and b must be the same numerical types, signed or unsigned.
+
+ @param TYPE Any numerical data types.
+ @param a The first operand with any numerical type.
+ @param b The second operand. It should be the same any numerical type with a.
+
+ @return Minimum of two operands.
+
+**/
-//
-// Return the minimum of two operands.
-// This macro returns the minimal of two operand specified by a and b.
-// Both a and b must be the same numerical types, signed or unsigned.
-//
#define MIN(a, b) \
(((a) < (b)) ? (a) : (b))
@@ -284,8 +409,11 @@ typedef INTN RETURN_STATUS;
/**
Returns a 16-bit signature built from 2 ASCII characters.
- @param A The first ASCII character.
- @param B The second ASCII character.
+ This macro returns a 16-bit value built from the two ASCII characters specified
+ by A and B.
+
+ @param A The first ASCII character.
+ @param B The second ASCII character.
@return A 16-bit value built from the two ASCII characters specified by A and B.
@@ -295,10 +423,13 @@ typedef INTN RETURN_STATUS;
/**
Returns a 32-bit signature built from 4 ASCII characters.
- @param A The first ASCII character.
- @param B The second ASCII character.
- @param C The third ASCII character.
- @param D The fourth ASCII character.
+ This macro returns a 32-bit value built from the four ASCII characters specified
+ by A, B, C, and D.
+
+ @param A The first ASCII character.
+ @param B The second ASCII character.
+ @param C The third ASCII character.
+ @param D The fourth ASCII character.
@return A 32-bit value built from the two ASCII characters specified by A, B,
C and D.
@@ -309,14 +440,17 @@ typedef INTN RETURN_STATUS;
/**
Returns a 64-bit signature built from 8 ASCII characters.
- @param A The first ASCII character.
- @param B The second ASCII character.
- @param C The third ASCII character.
- @param D The fourth ASCII character.
- @param E The fifth ASCII character.
- @param F The sixth ASCII character.
- @param G The seventh ASCII character.
- @param H The eighth ASCII character.
+ This macro returns a 64-bit value built from the eight ASCII characters specified
+ by A, B, C, D, E, F, G,and H.
+
+ @param A The first ASCII character.
+ @param B The second ASCII character.
+ @param C The third ASCII character.
+ @param D The fourth ASCII character.
+ @param E The fifth ASCII character.
+ @param F The sixth ASCII character.
+ @param G The seventh ASCII character.
+ @param H The eighth ASCII character.
@return A 64-bit value built from the two ASCII characters specified by A, B,
C, D, E, F, G and H.