188 lines
5.2 KiB
C
188 lines
5.2 KiB
C
/***************************************************************************
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osdcomm.h
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Common definitions shared by the OSD layer. This includes the most
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fundamental integral types as well as compiler-specific tweaks.
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Copyright Nicola Salmoria and the MAME Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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***************************************************************************/
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#pragma once
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#ifndef __OSDCOMM_H__
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#define __OSDCOMM_H__
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#define INLINE static __inline__
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/***************************************************************************
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COMPILER-SPECIFIC NASTINESS
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***************************************************************************/
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/* The Win32 port requires this constant for variable arg routines. */
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#ifndef CLIB_DECL
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#define CLIB_DECL
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#endif
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/* Some optimizations/warnings cleanups for GCC */
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#if defined(__GNUC__) && (__GNUC__ >= 3)
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#define ATTR_UNUSED __attribute__((__unused__))
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#define ATTR_NORETURN __attribute__((noreturn))
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#define ATTR_PRINTF(x,y) __attribute__((format(printf, x, y)))
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#define ATTR_MALLOC __attribute__((malloc))
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#define ATTR_PURE __attribute__((pure))
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#define ATTR_CONST __attribute__((const))
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#define ATTR_FORCE_INLINE __attribute__((always_inline))
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#define ATTR_NONNULL __attribute__((nonnull(1)))
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#define UNEXPECTED(exp) __builtin_expect((exp), 0)
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#define TYPES_COMPATIBLE(a,b) __builtin_types_compatible_p(a, b)
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#define RESTRICT __restrict__
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#define SETJMP_GNUC_PROTECT() (void)__builtin_return_address(1)
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#else
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#define ATTR_UNUSED
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#define ATTR_NORETURN
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#define ATTR_PRINTF(x,y)
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#define ATTR_MALLOC
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#define ATTR_PURE
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#define ATTR_CONST
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#define ATTR_FORCE_INLINE
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#define ATTR_NONNULL
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#define UNEXPECTED(exp) (exp)
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#define TYPES_COMPATIBLE(a,b) 1
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#define RESTRICT
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#define SETJMP_GNUC_PROTECT() do {} while (0)
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#endif
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/* And some MSVC optimizations/warnings */
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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#define DECL_NORETURN __declspec(noreturn)
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#else
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#define DECL_NORETURN
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#endif
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/***************************************************************************
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FUNDAMENTAL TYPES
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***************************************************************************/
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/* These types work on most modern compilers; however, OSD code can
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define their own by setting OSD_TYPES_DEFINED */
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#ifndef OSD_TYPES_DEFINED
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/* 8-bit values */
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typedef unsigned char UINT8;
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typedef signed char INT8;
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/* 16-bit values */
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typedef unsigned short UINT16;
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typedef signed short INT16;
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/* 32-bit values */
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#ifndef _WINDOWS_H
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typedef unsigned int UINT32;
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typedef signed int INT32;
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#endif
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/* 64-bit values */
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#ifndef _WINDOWS_H
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#ifdef _MSC_VER
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typedef signed __int64 INT64;
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typedef unsigned __int64 UINT64;
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#else
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__extension__ typedef unsigned long long UINT64;
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__extension__ typedef signed long long INT64;
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#endif
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#endif
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#endif
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/***************************************************************************
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FUNDAMENTAL CONSTANTS
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***************************************************************************/
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/* Ensure that TRUE/FALSE are defined */
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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/***************************************************************************
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FUNDAMENTAL MACROS
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***************************************************************************/
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/* Standard MIN/MAX macros */
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#ifndef MIN
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#define MIN(x,y) ((x) < (y) ? (x) : (y))
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#endif
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#ifndef MAX
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#define MAX(x,y) ((x) > (y) ? (x) : (y))
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#endif
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/* U64 and S64 are used to wrap long integer constants. */
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#ifdef __GNUC__
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#define U64(val) val##ULL
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#define S64(val) val##LL
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#else
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#define U64(val) val
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#define S64(val) val
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#endif
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/* Highly useful macro for compile-time knowledge of an array size */
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#define ARRAY_LENGTH(x) (sizeof(x) / sizeof(x[0]))
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/* Macros for normalizing data into big or little endian formats */
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#define FLIPENDIAN_INT16(x) (((((UINT16) (x)) >> 8) | ((x) << 8)) & 0xffff)
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#define FLIPENDIAN_INT32(x) ((((UINT32) (x)) << 24) | (((UINT32) (x)) >> 24) | \
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(( ((UINT32) (x)) & 0x0000ff00) << 8) | (( ((UINT32) (x)) & 0x00ff0000) >> 8))
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#define FLIPENDIAN_INT64(x) \
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( \
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(((((UINT64) (x)) >> 56) & ((UINT64) 0xFF)) << 0) | \
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(((((UINT64) (x)) >> 48) & ((UINT64) 0xFF)) << 8) | \
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(((((UINT64) (x)) >> 40) & ((UINT64) 0xFF)) << 16) | \
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(((((UINT64) (x)) >> 32) & ((UINT64) 0xFF)) << 24) | \
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(((((UINT64) (x)) >> 24) & ((UINT64) 0xFF)) << 32) | \
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(((((UINT64) (x)) >> 16) & ((UINT64) 0xFF)) << 40) | \
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(((((UINT64) (x)) >> 8) & ((UINT64) 0xFF)) << 48) | \
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(((((UINT64) (x)) >> 0) & ((UINT64) 0xFF)) << 56) \
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)
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#ifdef LSB_FIRST
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#define BIG_ENDIANIZE_INT16(x) (FLIPENDIAN_INT16(x))
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#define BIG_ENDIANIZE_INT32(x) (FLIPENDIAN_INT32(x))
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#define BIG_ENDIANIZE_INT64(x) (FLIPENDIAN_INT64(x))
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#define LITTLE_ENDIANIZE_INT16(x) (x)
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#define LITTLE_ENDIANIZE_INT32(x) (x)
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#define LITTLE_ENDIANIZE_INT64(x) (x)
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#else
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#define BIG_ENDIANIZE_INT16(x) (x)
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#define BIG_ENDIANIZE_INT32(x) (x)
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#define BIG_ENDIANIZE_INT64(x) (x)
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#define LITTLE_ENDIANIZE_INT16(x) (FLIPENDIAN_INT16(x))
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#define LITTLE_ENDIANIZE_INT32(x) (FLIPENDIAN_INT32(x))
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#define LITTLE_ENDIANIZE_INT64(x) (FLIPENDIAN_INT64(x))
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#endif /* LSB_FIRST */
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#endif /* __OSDCOMM_H__ */
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