ref: 21f6a1501d32f541673f8226d4b2292aef920c2b
dir: /h2stdinc.h/
/*
h2stdinc.h
includes the minimum necessary stdc headers,
defines common and / or missing types.
$Id: h2stdinc.h 577 2011-06-11 13:30:45Z sezero $
*/
#ifndef __H2STDINC_H
#define __H2STDINC_H
#include <u.h>
#include <libc.h>
#include <stdio.h>
#define uint32_t u32int
#define int32_t s32int
#define int16_t s16int
#define uint16_t u16int
#define uint64_t u64int
#define int64_t s64int
#define intptr_t vlong
#define uintptr_t uvlong
#define ptrdiff_t vlong
#define size_t uvlong
#undef PI
/*==========================================================================*/
#ifndef NULL
#if defined(__cplusplus)
#define NULL 0
#else
#define NULL ((void *)0)
#endif
#endif
#define H2MAXCHAR ((char)0x7f)
#define H2MAXSHORT ((short)0x7fff)
#define H2MAXINT ((int)0x7fffffff) /* max positive 32-bit integer */
#define H2MINCHAR ((char)0x80)
#define H2MINSHORT ((short)0x8000)
#define H2MININT ((int)0x80000000) /* max negative 32-bit integer */
/* Make sure the types really have the right
* sizes: These macros are from SDL headers.
*/
#define COMPILE_TIME_ASSERT(name, x) \
typedef int dummy_ ## name[(x) * 2 - 1]
COMPILE_TIME_ASSERT(char, sizeof(char) == 1);
COMPILE_TIME_ASSERT(float, sizeof(float) == 4);
COMPILE_TIME_ASSERT(long, sizeof(long) >= 4);
COMPILE_TIME_ASSERT(int, sizeof(int) == 4);
COMPILE_TIME_ASSERT(short, sizeof(short) == 2);
/* make sure enums are the size of ints for structure packing */
typedef enum {
THE_DUMMY_VALUE
} THE_DUMMY_ENUM;
COMPILE_TIME_ASSERT(enum, sizeof(THE_DUMMY_ENUM) == sizeof(int));
/*==========================================================================*/
typedef unsigned char byte;
#undef true
#undef false
#if defined(__cplusplus)
/* some structures have boolean members and the x86 asm code expect
* those members to be 4 bytes long. therefore, boolean must be 32
* bits and it can NOT be binary compatible with the 8 bit C++ bool. */
typedef int boolean;
COMPILE_TIME_ASSERT(falsehood, (0 == false));
COMPILE_TIME_ASSERT(truth, (1 == true));
#else
typedef enum {
false = 0,
true = 1
} boolean;
COMPILE_TIME_ASSERT(falsehood, ((1 != 1) == false));
COMPILE_TIME_ASSERT(truth, ((1 == 1) == true));
#endif
COMPILE_TIME_ASSERT(boolean, sizeof(boolean) == 4);
/*==========================================================================*/
/* math */
#define FRACBITS 16
#define FRACUNIT (1 << FRACBITS)
typedef int fixed_t;
/*==========================================================================*/
/* compatibility with DOS/Windows */
#ifndef O_BINARY
# if defined(_O_BINARY)
# define O_BINARY _O_BINARY
# else
# define O_BINARY 0
# endif
#endif
/* compatibility with M$ types */
#if !defined(_WIN32)
#define PASCAL
#define FAR
#define APIENTRY
#endif /* ! WINDOWS */
/*==========================================================================*/
/* compiler specific definitions */
#if !defined(__GNUC__)
#define __attribute__(x)
#endif /* __GNUC__ */
/* argument format attributes for function
* pointers are supported for gcc >= 3.1
*/
#if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0))
#define __fp_attribute__ __attribute__
#else
#define __fp_attribute__(x)
#endif
/* function optimize attribute is added
* starting with gcc 4.4.0
*/
#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 3))
#define __no_optimize __attribute__((__optimize__("0")))
#else
#define __no_optimize
#endif
/*==========================================================================*/
/* Some compilers, such as OpenWatcom, and possibly other compilers
* from the DOS universe, define __386__ instead of __i386__
*/
#if defined(__386__) && !defined(__i386__)
#define __i386__ 1
#endif
/*==========================================================================*/
/* Provide a substitute for offsetof() if we don't have one.
* This variant works on most (but not *all*) systems...
*/
#ifndef offsetof
#define offsetof(t,m) ((size_t)&(((t *)0)->m))
#endif
/*==========================================================================*/
#endif /* __H2STDINC_H */