MdePkg: Use builtin offsetof function for GCC 4.0 and newer

GCC 4.0 and newer have a builtin function for implementing
'offsetof' therefore we make use of it for our OFFSET_OF
macro.

References:
http://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Offsetof.html
http://gcc.gnu.org/onlinedocs/gcc-4.5.1/gcc/Offsetof.html

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10931 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2010-10-13 07:08:06 +00:00
parent 2b0fcbf537
commit 818ff8c267

View File

@ -1,8 +1,8 @@
/** @file /** @file
Root include file for Mde Package Base type modules Root include file for Mde Package Base type modules
This is the include file for any module of type base. Base modules only use This is the include file for any module of type base. Base modules only use
types defined via this include file and can be ported easily to any types defined via this include file and can be ported easily to any
environment. There are a set of base libraries in the Mde Package that can environment. There are a set of base libraries in the Mde Package that can
be used to implement base modules. be used to implement base modules.
@ -30,7 +30,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
/** /**
Verifies the storage size of a given data type. Verifies the storage size of a given data type.
This macro generates a divide by zero error or a zero size array declaration in This macro generates a divide by zero error or a zero size array declaration in
the preprocessor if the size is incorrect. These are declared as "extern" so the preprocessor if the size is incorrect. These are declared as "extern" so
the space for these arrays will not be in the modules. the space for these arrays will not be in the modules.
@ -42,8 +42,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#define VERIFY_SIZE_OF(TYPE, Size) extern UINT8 _VerifySizeof##TYPE[(sizeof(TYPE) == (Size)) / (sizeof(TYPE) == (Size))] #define VERIFY_SIZE_OF(TYPE, Size) extern UINT8 _VerifySizeof##TYPE[(sizeof(TYPE) == (Size)) / (sizeof(TYPE) == (Size))]
// //
// Verify that ProcessorBind.h produced UEFI Data Types that are compliant with // Verify that ProcessorBind.h produced UEFI Data Types that are compliant with
// Section 2.3.1 of the UEFI 2.3 Specification. // Section 2.3.1 of the UEFI 2.3 Specification.
// //
VERIFY_SIZE_OF (BOOLEAN, 1); VERIFY_SIZE_OF (BOOLEAN, 1);
VERIFY_SIZE_OF (INT8, 1); VERIFY_SIZE_OF (INT8, 1);
@ -59,19 +59,19 @@ VERIFY_SIZE_OF (CHAR16, 2);
// //
// The Microsoft* C compiler can removed references to unreferenced data items // The Microsoft* C compiler can removed references to unreferenced data items
// if the /OPT:REF linker option is used. We defined a macro as this is a // if the /OPT:REF linker option is used. We defined a macro as this is a
// a non standard extension // a non standard extension
// //
#if defined(_MSC_EXTENSIONS) && !defined (MDE_CPU_EBC) #if defined(_MSC_EXTENSIONS) && !defined (MDE_CPU_EBC)
/// ///
/// Remove global variable from the linked image if there are no references to /// Remove global variable from the linked image if there are no references to
/// it after all compiler and linker optimizations have been performed. /// it after all compiler and linker optimizations have been performed.
/// ///
/// ///
#define GLOBAL_REMOVE_IF_UNREFERENCED __declspec(selectany) #define GLOBAL_REMOVE_IF_UNREFERENCED __declspec(selectany)
#else #else
/// ///
/// Remove the global variable from the linked image if there are no references /// Remove the global variable from the linked image if there are no references
/// to it after all compiler and linker optimizations have been performed. /// to it after all compiler and linker optimizations have been performed.
/// ///
/// ///
@ -97,7 +97,7 @@ VERIFY_SIZE_OF (CHAR16, 2);
#if __APPLE__ #if __APPLE__
// //
// Apple extension that is used by the linker to optimize code size // Apple extension that is used by the linker to optimize code size
// with assembly functions. Put at the end of your .S files // with assembly functions. Put at the end of your .S files
// //
#define ASM_FUNCTION_REMOVE_IF_UNREFERENCED .subsections_via_symbols #define ASM_FUNCTION_REMOVE_IF_UNREFERENCED .subsections_via_symbols
@ -107,7 +107,7 @@ VERIFY_SIZE_OF (CHAR16, 2);
#ifdef __CC_ARM #ifdef __CC_ARM
// //
// Older RVCT ARM compilers don't fully support #pragma pack and require __packed // Older RVCT ARM compilers don't fully support #pragma pack and require __packed
// as a prefix for the structure. // as a prefix for the structure.
// //
#define PACKED __packed #define PACKED __packed
@ -116,7 +116,7 @@ VERIFY_SIZE_OF (CHAR16, 2);
#endif #endif
/// ///
/// 128 bit buffer containing a unique identifier value. /// 128 bit buffer containing a unique identifier value.
/// Unless otherwise specified, aligned on a 64 bit boundary. /// Unless otherwise specified, aligned on a 64 bit boundary.
/// ///
typedef struct { typedef struct {
@ -185,7 +185,7 @@ struct _LIST_ENTRY {
#define OPTIONAL #define OPTIONAL
// //
// UEFI specification claims 1 and 0. We are concerned about the // UEFI specification claims 1 and 0. We are concerned about the
// complier portability so we did it this way. // complier portability so we did it this way.
// //
@ -326,7 +326,7 @@ struct _LIST_ENTRY {
#define SIZE_2EB 0x2000000000000000ULL #define SIZE_2EB 0x2000000000000000ULL
#define SIZE_4EB 0x4000000000000000ULL #define SIZE_4EB 0x4000000000000000ULL
#define SIZE_8EB 0x8000000000000000ULL #define SIZE_8EB 0x8000000000000000ULL
#define BASE_1KB 0x00000400 #define BASE_1KB 0x00000400
#define BASE_2KB 0x00000800 #define BASE_2KB 0x00000800
#define BASE_4KB 0x00001000 #define BASE_4KB 0x00001000
@ -384,7 +384,7 @@ struct _LIST_ENTRY {
// //
// Support for variable length argument lists using the ANSI standard. // Support for variable length argument lists using the ANSI standard.
// //
// Since we are using the ANSI standard we used the standard naming and // Since we are using the ANSI standard we used the standard naming and
// did not follow the coding convention // did not follow the coding convention
// //
@ -437,8 +437,8 @@ struct _LIST_ENTRY {
// //
/// ///
/// Variable used to traverse the list of arguments. This type can vary by /// Variable used to traverse the list of arguments. This type can vary by
/// implementation and could be an array or structure. /// implementation and could be an array or structure.
/// ///
#ifdef __APCS_ADSABI #ifdef __APCS_ADSABI
typedef int *va_list[1]; typedef int *va_list[1];
@ -460,8 +460,8 @@ struct _LIST_ENTRY {
// //
/// ///
/// Variable used to traverse the list of arguments. This type can vary by /// Variable used to traverse the list of arguments. This type can vary by
/// implementation and could be an array or structure. /// implementation and could be an array or structure.
/// ///
typedef __builtin_va_list VA_LIST; typedef __builtin_va_list VA_LIST;
@ -473,42 +473,42 @@ typedef __builtin_va_list VA_LIST;
#else #else
/// ///
/// Variable used to traverse the list of arguments. This type can vary by /// Variable used to traverse the list of arguments. This type can vary by
/// implementation and could be an array or structure. /// implementation and could be an array or structure.
/// ///
typedef CHAR8 *VA_LIST; typedef CHAR8 *VA_LIST;
/** /**
Retrieves a pointer to the beginning of a variable argument list, based on 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. the name of the parameter that immediately precedes the variable argument list.
This function initializes Marker to point to the beginning of the variable This function initializes Marker to point to the beginning of the variable
argument list that immediately follows Parameter. The method for computing the 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 pointer to the next argument in the argument list is CPU-specific following the
EFIAPI ABI. EFIAPI ABI.
@param Marker The VA_LIST used to traverse the list of arguments. @param Marker The VA_LIST used to traverse the list of arguments.
@param Parameter The name of the parameter that immediately precedes @param Parameter The name of the parameter that immediately precedes
the variable argument list. the variable argument list.
@return A pointer to the beginning of a variable argument list. @return A pointer to the beginning of a variable argument list.
**/ **/
#define VA_START(Marker, Parameter) (Marker = (VA_LIST) ((UINTN) & (Parameter) + _INT_SIZE_OF (Parameter))) #define VA_START(Marker, Parameter) (Marker = (VA_LIST) ((UINTN) & (Parameter) + _INT_SIZE_OF (Parameter)))
/** /**
Returns an argument of a specified type from a variable argument list and updates 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. 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 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 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 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. pointer to the next argument in the argument list is CPU-specific following the EFIAPI ABI.
@param Marker VA_LIST used to traverse the list of arguments. @param Marker VA_LIST used to traverse the list of arguments.
@param TYPE The type of argument to retrieve from the beginning @param TYPE The type of argument to retrieve from the beginning
of the variable argument list. of the variable argument list.
@return An argument of the type specified by TYPE. @return An argument of the type specified by TYPE.
**/ **/
@ -517,12 +517,12 @@ typedef CHAR8 *VA_LIST;
/** /**
Terminates the use of a variable argument list. Terminates the use of a variable argument list.
This function initializes Marker so it can no longer be used with VA_ARG(). 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 is After this macro is used, the only way to access the variable argument list is
by using VA_START() again. by using VA_START() again.
@param Marker VA_LIST used to traverse the list of arguments. @param Marker VA_LIST used to traverse the list of arguments.
**/ **/
#define VA_END(Marker) (Marker = (VA_LIST) 0) #define VA_END(Marker) (Marker = (VA_LIST) 0)
@ -543,130 +543,138 @@ typedef UINTN *BASE_LIST;
#define _BASE_INT_SIZE_OF(TYPE) ((sizeof (TYPE) + sizeof (UINTN) - 1) / sizeof (UINTN)) #define _BASE_INT_SIZE_OF(TYPE) ((sizeof (TYPE) + sizeof (UINTN) - 1) / sizeof (UINTN))
/** /**
Returns an argument of a specified type from a variable argument list and updates 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. 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 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 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 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. pointer to the next argument in the argument list is CPU specific following the EFIAPI ABI.
@param Marker The pointer to the beginning of a variable argument list. @param Marker The pointer to the beginning of a variable argument list.
@param TYPE The type of argument to retrieve from the beginning @param TYPE The type of argument to retrieve from the beginning
of the variable argument list. of the variable argument list.
@return An argument of the type specified by TYPE. @return An argument of the type specified by TYPE.
**/ **/
#define BASE_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _BASE_INT_SIZE_OF (TYPE)) - _BASE_INT_SIZE_OF (TYPE))) #define BASE_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _BASE_INT_SIZE_OF (TYPE)) - _BASE_INT_SIZE_OF (TYPE)))
/** /**
The macro that returns the byte offset of a field in a data structure. The 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 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, beginning of the data structure specified by TYPE. If TYPE does not contain Field,
the module will not compile. the module will not compile.
@param TYPE The name of the data structure that contains the field specified by Field. @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. @param Field The name of the field in the data structure.
@return Offset, in bytes, of field. @return Offset, in bytes, of field.
**/ **/
#ifdef __GNUC__
#if __GNUC__ >= 4
#define OFFSET_OF(TYPE, Field) ((UINTN) __builtin_offsetof(TYPE, Field))
#endif
#endif
#ifndef OFFSET_OF
#define OFFSET_OF(TYPE, Field) ((UINTN) &(((TYPE *)0)->Field)) #define OFFSET_OF(TYPE, Field) ((UINTN) &(((TYPE *)0)->Field))
#endif
/** /**
Macro that returns a pointer to the data structure that contains a specified field of 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 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 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. 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 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 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 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. 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 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 @param TYPE The name of the data structure type to return. This data structure must
contain the field specified by Field. contain the field specified by Field.
@param Field The name of the field in the data structure specified by TYPE to which Record points. @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. @return A pointer to the structure from one of it's elements.
**/ **/
#define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field))) #define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
/** /**
Rounds a value up to the next boundary using a specified 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 function rounds Value up to the next boundary using the specified Alignment.
This aligned value is returned. This aligned value is returned.
@param Value The value to round up. @param Value The value to round up.
@param Alignment The alignment boundary used to return the aligned value. @param Alignment The alignment boundary used to return the aligned value.
@return A value up to the next boundary. @return A value up to the next boundary.
**/ **/
#define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1))) #define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1)))
/** /**
Adjust a pointer by adding the minimum offset required for it to be aligned on Adjust a pointer by adding the minimum offset required for it to be aligned on
a specified alignment boundary. a specified alignment boundary.
This function rounds the pointer specified by Pointer to the next 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. specified by Alignment. The pointer to the aligned address is returned.
@param Pointer The pointer to round up. @param Pointer The pointer to round up.
@param Alignment The alignment boundary to use to return an aligned pointer. @param Alignment The alignment boundary to use to return an aligned pointer.
@return Pointer to the aligned address. @return Pointer to the aligned address.
**/ **/
#define ALIGN_POINTER(Pointer, Alignment) ((VOID *) (ALIGN_VALUE ((UINTN)(Pointer), (Alignment)))) #define ALIGN_POINTER(Pointer, Alignment) ((VOID *) (ALIGN_VALUE ((UINTN)(Pointer), (Alignment))))
/** /**
Rounds a value up to the next natural boundary for the current CPU. 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 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 This function rounds the value specified by Value up to the next natural boundary for the
current CPU. This rounded value is returned. current CPU. This rounded value is returned.
@param Value The value to round up. @param Value The value to round up.
@return Rounded value specified by Value. @return Rounded value specified by Value.
**/ **/
#define ALIGN_VARIABLE(Value) ALIGN_VALUE ((Value), sizeof (UINTN)) #define ALIGN_VARIABLE(Value) ALIGN_VALUE ((Value), sizeof (UINTN))
/** /**
Return the maximum of two operands. Return the maximum of two operands.
This macro returns the maximum of two operand specified by a and b. 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. Both a and b must be the same numerical types, signed or unsigned.
@param a The first operand with any numerical type. @param a The first operand with any numerical type.
@param b The second operand. Can be any numerical type as long as is @param b The second operand. Can be any numerical type as long as is
the same type as a. the same type as a.
@return Maximum of two operands. @return Maximum of two operands.
**/ **/
#define MAX(a, b) \ #define MAX(a, b) \
(((a) > (b)) ? (a) : (b)) (((a) > (b)) ? (a) : (b))
/** /**
Return the minimum of two operands. Return the minimum of two operands.
This macro returns the minimal of two operand specified by a and b. 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. Both a and b must be the same numerical types, signed or unsigned.
@param a The first operand with any numerical type. @param a The first operand with any numerical type.
@param b The second operand. It should be the same any numerical type with a. @param b The second operand. It should be the same any numerical type with a.
@return Minimum of two operands. @return Minimum of two operands.
**/ **/
#define MIN(a, b) \ #define MIN(a, b) \
@ -678,9 +686,9 @@ typedef UINTN *BASE_LIST;
typedef UINTN RETURN_STATUS; typedef UINTN RETURN_STATUS;
/** /**
Produces a RETURN_STATUS code with the highest bit set. Produces a RETURN_STATUS code with the highest bit set.
@param StatusCode The status code value to convert into a warning code. @param StatusCode The status code value to convert into a warning code.
StatusCode must be in the range 0x00000000..0x7FFFFFFF. StatusCode must be in the range 0x00000000..0x7FFFFFFF.
@return The value specified by StatusCode with the highest bit set. @return The value specified by StatusCode with the highest bit set.
@ -689,9 +697,9 @@ typedef UINTN RETURN_STATUS;
#define ENCODE_ERROR(StatusCode) ((RETURN_STATUS)(MAX_BIT | (StatusCode))) #define ENCODE_ERROR(StatusCode) ((RETURN_STATUS)(MAX_BIT | (StatusCode)))
/** /**
Produces a RETURN_STATUS code with the highest bit clear. Produces a RETURN_STATUS code with the highest bit clear.
@param StatusCode The status code value to convert into a warning code. @param StatusCode The status code value to convert into a warning code.
StatusCode must be in the range 0x00000000..0x7FFFFFFF. StatusCode must be in the range 0x00000000..0x7FFFFFFF.
@return The value specified by StatusCode with the highest bit clear. @return The value specified by StatusCode with the highest bit clear.
@ -700,10 +708,10 @@ typedef UINTN RETURN_STATUS;
#define ENCODE_WARNING(StatusCode) ((RETURN_STATUS)(StatusCode)) #define ENCODE_WARNING(StatusCode) ((RETURN_STATUS)(StatusCode))
/** /**
Returns TRUE if a specified RETURN_STATUS code is an error code. Returns TRUE if a specified RETURN_STATUS code is an error code.
This function returns TRUE if StatusCode has the high bit set. Otherwise, FALSE is returned.
This function returns TRUE if StatusCode has the high bit set. Otherwise, FALSE is returned.
@param StatusCode The status code value to evaluate. @param StatusCode The status code value to evaluate.
@retval TRUE The high bit of StatusCode is set. @retval TRUE The high bit of StatusCode is set.
@ -766,7 +774,7 @@ typedef UINTN RETURN_STATUS;
#define RETURN_OUT_OF_RESOURCES ENCODE_ERROR (9) #define RETURN_OUT_OF_RESOURCES ENCODE_ERROR (9)
/// ///
/// An inconsistency was detected on the file system causing the /// An inconsistency was detected on the file system causing the
/// operation to fail. /// operation to fail.
/// ///
#define RETURN_VOLUME_CORRUPTED ENCODE_ERROR (10) #define RETURN_VOLUME_CORRUPTED ENCODE_ERROR (10)
@ -777,7 +785,7 @@ typedef UINTN RETURN_STATUS;
#define RETURN_VOLUME_FULL ENCODE_ERROR (11) #define RETURN_VOLUME_FULL ENCODE_ERROR (11)
/// ///
/// The device does not contain any medium to perform the /// The device does not contain any medium to perform the
/// operation. /// operation.
/// ///
#define RETURN_NO_MEDIA ENCODE_ERROR (12) #define RETURN_NO_MEDIA ENCODE_ERROR (12)
@ -893,17 +901,17 @@ typedef UINTN RETURN_STATUS;
#define RETURN_WARN_WRITE_FAILURE ENCODE_WARNING (3) #define RETURN_WARN_WRITE_FAILURE ENCODE_WARNING (3)
/// ///
/// The resulting buffer was too small, and the data was /// The resulting buffer was too small, and the data was
/// truncated to the buffer size. /// truncated to the buffer size.
/// ///
#define RETURN_WARN_BUFFER_TOO_SMALL ENCODE_WARNING (4) #define RETURN_WARN_BUFFER_TOO_SMALL ENCODE_WARNING (4)
/** /**
Returns a 16-bit signature built from 2 ASCII characters. Returns a 16-bit signature built from 2 ASCII characters.
This macro returns a 16-bit value built from the two ASCII characters specified This macro returns a 16-bit value built from the two ASCII characters specified
by A and B. by A and B.
@param A The first ASCII character. @param A The first ASCII character.
@param B The second ASCII character. @param B The second ASCII character.
@ -914,10 +922,10 @@ typedef UINTN RETURN_STATUS;
/** /**
Returns a 32-bit signature built from 4 ASCII characters. Returns a 32-bit signature built from 4 ASCII characters.
This macro returns a 32-bit value built from the four ASCII characters specified This macro returns a 32-bit value built from the four ASCII characters specified
by A, B, C, and D. by A, B, C, and D.
@param A The first ASCII character. @param A The first ASCII character.
@param B The second ASCII character. @param B The second ASCII character.
@param C The third ASCII character. @param C The third ASCII character.
@ -931,10 +939,10 @@ typedef UINTN RETURN_STATUS;
/** /**
Returns a 64-bit signature built from 8 ASCII characters. Returns a 64-bit signature built from 8 ASCII characters.
This macro returns a 64-bit value built from the eight ASCII characters specified This macro returns a 64-bit value built from the eight ASCII characters specified
by A, B, C, D, E, F, G,and H. by A, B, C, D, E, F, G,and H.
@param A The first ASCII character. @param A The first ASCII character.
@param B The second ASCII character. @param B The second ASCII character.
@param C The third ASCII character. @param C The third ASCII character.