| 1 | /** @file
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| 2 | Common "Standard" Definitions.
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| 3 |
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| 4 | The files stddef.h and stdlib.h are "catch all" headers for definitions and declarations
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| 5 | that don't fit well in the other headers. There are two separate header files because
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| 6 | the contents of <stddef.h> are valid in both freestanding and hosted environment, while the
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| 7 | header <stdlib.h> contains elements that are only valid in a hosted environment.
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| 8 |
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| 9 | This means that the elements in this file may not impose dependencies on headers other than
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| 10 | <float.h>, <iso646.h>, <limits.h>, <stdarg.h>, <stdbool.h>, and (of course) <sys/EfiCdefs.h>.
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| 11 |
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| 12 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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| 13 | This program and the accompanying materials are licensed and made available under
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| 14 | the terms and conditions of the BSD License that accompanies this distribution.
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| 15 | The full text of the license may be found at
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| 16 | http://opensource.org/licenses/bsd-license.
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| 17 |
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| 18 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 19 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 20 | **/
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| 21 | #ifndef _STDDEF_H
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| 22 | #define _STDDEF_H
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| 23 | #include <sys/EfiCdefs.h>
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| 24 |
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| 25 | #ifdef _EFI_PTRDIFF_T_
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| 26 | /** ptrdiff_t is the signed integer type of the result of subtracting two pointers. **/
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| 27 | typedef _EFI_PTRDIFF_T_ ptrdiff_t;
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| 28 | #undef _EFI_PTRDIFF_T_
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| 29 | #endif
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| 30 |
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| 31 | #ifdef _EFI_SIZE_T_
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| 32 | /** size_t is the unsigned integer type of the result of the sizeof operator. **/
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| 33 | typedef _EFI_SIZE_T_ size_t;
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| 34 | #undef _EFI_SIZE_T_
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| 35 | #undef _BSD_SIZE_T_
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| 36 | #endif
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| 37 |
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| 38 | #ifndef __cplusplus
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| 39 | #ifdef _EFI_WCHAR_T
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| 40 | /** wchar_t is an integer type whose range of values can represent distinct
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| 41 | codes for all members of the largest extended character set specified among
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| 42 | the supported locales. The null character shall have the code value zero.
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| 43 | **/
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| 44 | typedef _EFI_WCHAR_T wchar_t;
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| 45 | #undef _EFI_WCHAR_T
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| 46 | #undef _BSD_WCHAR_T_
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| 47 | #endif
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| 48 | #endif
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| 49 |
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| 50 | /** @def NULL
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| 51 | A macro that expands to a null pointer constant.<BR>
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| 52 | NULL is defined in MdePkg/Include/Base.h which is automatically included
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| 53 | by the EDK II build tools.
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| 54 | **/
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| 55 |
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| 56 | /** The offsetof macro determines the offset of the beginning of a structure
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| 57 | member from the beginning of the structure.
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| 58 |
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| 59 | The macro expands to an integer constant expression that has type size_t,
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| 60 | the value of which is the offset in bytes, to the structure member (Member),
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| 61 | from the beginning of its structure (StrucName).
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| 62 |
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| 63 | Alliased to OFFSET_OF which is defined in MdePkg/Include/Base.h which is
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| 64 | automatically included by the EDK II build tools.
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| 65 | **/
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| 66 | #define offsetof(StrucName, Member) OFFSET_OF(StrucName, Member)
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| 67 |
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| 68 | #endif /* _STDDEF_H */
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