112 lines
5.3 KiB
C
112 lines
5.3 KiB
C
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: sdk/xtdk/xtdefs.h
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* DESCRIPTION: XT definitions for basic types
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#ifndef __XTDK_XTDEFS_H
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#define __XTDK_XTDEFS_H
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/* Routines and arguments modifiers */
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#define IN
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#define OUT
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#define XTAPI __stdcall
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#define XTCDECL __cdecl
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#define XTFASTCALL __fastcall
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#define XTINLINE __inline
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#define XTASSEMBLY __attribute__((naked))
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/* Variable modifiers */
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#define CONST const
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#define EXTERN extern
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#define STRUCT struct
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#define STATIC static
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#define UNION union
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#define VOLATILE volatile
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/* NULL values */
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#define NULL ((PVOID) 0)
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#define NULL64 ((VOID * PVOID) 0)
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/* Type limits */
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#define MINCHAR 0x80
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#define MAXCHAR 0x7F
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#define MINSHORT 0x8000
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#define MAXSHORT 0x7FFF
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#define MINLONG 0x80000000
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#define MAXLONG 0x7FFFFFFF
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#define MAXULONG 0xFFFFFFFF
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/* Preprocessor macros for defining a structure alignment, packing and segment */
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#define ALIGN(x) __attribute__((aligned(x)))
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#define PACK __attribute__((packed))
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#define SEGMENT(segment) __attribute__((section(segment)))
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/* Macro for calculating size of an array */
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
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/* Macro for accessing the base address of a structure from a structure member */
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#define CONTAIN_RECORD(Address, Type, Field) ((Type *)(((ULONG_PTR)Address) - (ULONG_PTR)(&(((Type *)0)->Field))))
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/* EFI size to pages conversion macro */
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#define EFI_SIZE_TO_PAGES(Size) (((Size) >> EFI_PAGE_SHIFT) + (((Size) & EFI_PAGE_MASK) ? 1 : 0))
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/* Macro for calculating byte offset of a field in the structure */
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#define FIELD_OFFSET(Structure, Field) ((LONG)(LONG_PTR)&(((Structure *)0)->Field))
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/* Macro for calculating size of a field in the structure */
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#define FIELD_SIZE(Structure, Field) (sizeof(((Structure *)0)->Field))
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/* Macro that yields field type in the structure */
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#define FIELD_TYPE(Structure, Field) (((Structure*)0)->Field)
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/* Macro that page-aligns a virtual address */
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#define PAGE_ALIGN(VirtualAddress) ((PVOID)((ULONG_PTR)VirtualAddress & ~MM_PAGE_MASK))
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/* Macro that returns offset of the virtual address */
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#define PAGE_OFFSET(VirtualAddress) ((ULONG)((ULONG_PTR)VirtualAddress & MM_PAGE_MASK))
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/* Macro for rounding down */
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#define ROUND_DOWN(X, Alignment) ((X) & ~((Alignment) - 1))
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/* Macro for rounding up */
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#define ROUND_UP(X, Alignment) ROUND_DOWN((X) + (Alignment - 1), Alignment)
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/* Macros for defining signatures built from ASCII characters */
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#define SIGNATURE16(A, B) ((A) | (B << 8))
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#define SIGNATURE32(A, B, C, D) (SIGNATURE16(A, B) | (SIGNATURE16(C, D) << 16))
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#define SIGNATURE64(A, B, C, D, E, F, G, H) (SIGNATURE32(A, B, C, D) | ((UINT64)(SIGNATURE32(E, F, G, H)) << 32))
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/* XT size to pages conversion macro */
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#define SIZE_TO_PAGES(Size) (((Size) >> MM_PAGE_SHIFT) + (((Size) & (MM_PAGE_MASK)) ? 1 : 0))
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/* Variadic ABI functions */
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typedef __builtin_va_list VA_LIST;
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#define VA_ARG(Marker, Type) ((sizeof (Type) < sizeof(UINT_PTR)) ? \
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(Type)(__builtin_va_arg(Marker, UINT_PTR)) : \
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(Type)(__builtin_va_arg(Marker, Type)))
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#define VA_COPY(Dest, Start) __builtin_va_copy(Dest, Start)
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#define VA_START(Marker, Parameter) __builtin_va_start(Marker, Parameter)
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#define VA_END(Marker) __builtin_va_end(Marker)
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/* Data conversion macros */
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#define HandleToLong(Var) ((LONG)(LONG_PTR)Var)
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#define HandleToUlong(Var) ((ULONG)(ULONG_PTR)Var)
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#define IntToPtr(Var) ((PVOID)(INT_PTR)Var)
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#define LongToHandle(Var) ((HANDLE)(LONG_PTR)Var)
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#define LongToPtr(Var) ((PVOID)(LONG_PTR)Var)
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#define PtrToInt(Var) ((INT)(INT_PTR)Var)
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#define PtrToLong(Var) ((LONG)(LONG_PTR)Var)
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#define PtrToShort(Var) ((SHORT)(LONG_PTR)Var)
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#define PtrToUint(Var) ((UINT)(UINT_PTR)Var)
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#define PtrToUlong(Var) ((ULONG)(ULONG_PTR)Var)
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#define PtrToUshort(Var) ((USHORT)(ULONG_PTR)Var)
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#define UintToPtr(Var) ((PVOID)(UINT_PTR)Var)
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#define UlongToHandle(Var) ((HANDLE)(ULONG_PTR)Var)
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#define UlongToPtr(Var) ((PVOID)(ULONG_PTR)Var)
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#endif /* __XTDK_XTDEFS_H */
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