/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#if defined(OF_APPLE_RUNTIME)
# import <objc/runtime.h>
#endif
#ifdef __GNUC__
# define OF_INLINE inline __attribute__((always_inline))
# define OF_LIKELY(cond) (__builtin_expect(!!(cond), 1))
# define OF_UNLIKELY(cond) (__builtin_expect(!!(cond), 0))
# define OF_CONST_FUNC __attribute__((const))
#else
# define OF_INLINE inline
# define OF_LIKELY(cond) cond
# define OF_UNLIKELY(cond) cond
# define OF_CONST_FUNC
#endif
/* Required to build universal binaries on OS X */
#if __BIG_ENDIAN__ || __LITTLE_ENDIAN__
# if __BIG_ENDIAN__ && __LITTLE_ENDIAN__
# error __BIG_ENDIAN__ and __LITTLE_ENDIAN__ defined!
# endif
# undef OF_BIG_ENDIAN
# if __BIG_ENDIAN__
# define OF_BIG_ENDIAN
# endif
#endif
#ifdef OF_BIG_ENDIAN
# define OF_BYTE_ORDER_NATIVE OF_BYTE_ORDER_BIG_ENDIAN
#else
# define OF_BYTE_ORDER_NATIVE OF_BYTE_ORDER_LITTLE_ENDIAN
#endif
/* Hopefully no arch needs more than 16 bytes padding */
#ifndef __BIGGEST_ALIGNMENT__
# define __BIGGEST_ALIGNMENT__ 16
#endif
#ifdef __GNUC__
# if defined(__amd64__) || defined(__x86_64__)
# define OF_AMD64_ASM
# elif defined(__i386__)
# define OF_X86_ASM
# elif defined(__ppc__) || defined(__PPC__)
# define OF_PPC_ASM
# elif defined(__arm__) || defined(__ARM__)
# define OF_ARM_ASM
# ifdef __ARM_ARCH_7__
# define OF_ARMV7_ASM
# endif
# ifdef __ARM_ARCH_7A__
# define OF_ARMV7_ASM
# endif
# ifdef __ARM_ARCH_7R__
# define OF_ARMV7_ASM
# endif
# ifdef __ARM_ARCH_7M__
# define OF_ARMV7_ASM
# endif
# ifdef __ARM_ARCH_7EM__
# define OF_ARMV7_ASM
# endif
# ifdef __ARM_ARCH_6__
# define OF_ARMV6_ASM
# endif
# ifdef __ARM_ARCH_6J__
# define OF_ARMV6_ASM
# endif
# ifdef __ARM_ARCH_6K__
# define OF_ARMV6_ASM
# endif
# ifdef __ARM_ARCH_6Z__
# define OF_ARMV6_ASM
# endif
# ifdef __ARM_ARCH_6ZK__
# define OF_ARMV6_ASM
# endif
# ifdef __ARM_ARCH_6T2__
# define OF_ARMV6_ASM
# endif
# ifdef OF_ARMV7_ASM
# define OF_ARMV6_ASM
# endif
# endif
#endif
#define OF_ENSURE(cond) \
if (!(cond)) { \
fprintf(stderr, "Failed to ensure condition in " \
__FILE__ ":%d:\n" #cond "\n", __LINE__); \
abort(); \
}
#ifndef _WIN32
# define OF_PATH_DELIMITER '/'
# define OF_PATH_DELIMITER_STRING @"/"
#else
# define OF_PATH_DELIMITER '\\'
# define OF_PATH_DELIMITER_STRING @"\\"
#endif
#define OF_PATH_CURRENT_DIRECTORY @"."
#define OF_PATH_PARENT_DIRECTORY @".."
extern id objc_getProperty(id, SEL, ptrdiff_t, BOOL);
extern void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, signed char);
#define OF_IVAR_OFFSET(ivar) ((intptr_t)&ivar - (intptr_t)self)
#define OF_GETTER(ivar, atomic) \
return objc_getProperty(self, _cmd, OF_IVAR_OFFSET(ivar), atomic);
#define OF_SETTER(ivar, value, atomic, copy) \
objc_setProperty(self, _cmd, OF_IVAR_OFFSET(ivar), value, atomic, copy);
static OF_INLINE uint16_t OF_CONST_FUNC
OF_BSWAP16_CONST(uint16_t i)
{
return (i & UINT16_C(0xFF00)) >> 8 |
(i & UINT16_C(0x00FF)) << 8;
}
static OF_INLINE uint32_t OF_CONST_FUNC
OF_BSWAP32_CONST(uint32_t i)
{
return (i & UINT32_C(0xFF000000)) >> 24 |
(i & UINT32_C(0x00FF0000)) >> 8 |
(i & UINT32_C(0x0000FF00)) << 8 |
(i & UINT32_C(0x000000FF)) << 24;
}
static OF_INLINE uint64_t OF_CONST_FUNC
OF_BSWAP64_CONST(uint64_t i)
{
return (i & UINT64_C(0xFF00000000000000)) >> 56 |
(i & UINT64_C(0x00FF000000000000)) >> 40 |
(i & UINT64_C(0x0000FF0000000000)) >> 24 |
(i & UINT64_C(0x000000FF00000000)) >> 8 |
(i & UINT64_C(0x00000000FF000000)) << 8 |
(i & UINT64_C(0x0000000000FF0000)) << 24 |
(i & UINT64_C(0x000000000000FF00)) << 40 |
(i & UINT64_C(0x00000000000000FF)) << 56;
}
static OF_INLINE uint16_t OF_CONST_FUNC
OF_BSWAP16_NONCONST(uint16_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
__asm__ (
"xchgb %h0, %b0"
: "=Q"(i)
: "0"(i)
);
#elif defined(OF_PPC_ASM)
__asm__ (
"lhbrx %0, 0, %1"
: "=r"(i)
: "r"(&i), "m"(i)
);
#elif defined(OF_ARMV6_ASM)
__asm__ (
"rev16 %0, %0"
: "=r"(i)
: "0"(i)
);
#else
i = (i & UINT16_C(0xFF00)) >> 8 |
(i & UINT16_C(0x00FF)) << 8;
#endif
return i;
}
static OF_INLINE uint32_t OF_CONST_FUNC
OF_BSWAP32_NONCONST(uint32_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
__asm__ (
"bswap %0"
: "=q"(i)
: "0"(i)
);
#elif defined(OF_PPC_ASM)
__asm__ (
"lwbrx %0, 0, %1"
: "=r"(i)
: "r"(&i), "m"(i)
);
#elif defined(OF_ARMV6_ASM)
__asm__ (
"rev %0, %0"
: "=r"(i)
: "0"(i)
);
#else
i = (i & UINT32_C(0xFF000000)) >> 24 |
(i & UINT32_C(0x00FF0000)) >> 8 |
(i & UINT32_C(0x0000FF00)) << 8 |
(i & UINT32_C(0x000000FF)) << 24;
#endif
return i;
}
static OF_INLINE uint64_t OF_CONST_FUNC
OF_BSWAP64_NONCONST(uint64_t i)
{
#if defined(OF_AMD64_ASM)
__asm__ (
"bswap %0"
: "=r"(i)
: "0"(i)
);
#elif defined(OF_X86_ASM)
__asm__ (
"bswap %%eax\n\t"
"bswap %%edx\n\t"
"xchgl %%eax, %%edx"
: "=A"(i)
: "0"(i)
);
#else
i = (uint64_t)OF_BSWAP32_NONCONST((uint32_t)(i & 0xFFFFFFFF)) << 32 |
OF_BSWAP32_NONCONST((uint32_t)(i >> 32));
#endif
return i;
}
#ifdef __GNUC__
# define OF_BSWAP16(i) \
(__builtin_constant_p(i) ? OF_BSWAP16_CONST(i) : OF_BSWAP16_NONCONST(i))
# define OF_BSWAP32(i) \
(__builtin_constant_p(i) ? OF_BSWAP32_CONST(i) : OF_BSWAP32_NONCONST(i))
# define OF_BSWAP64(i) \
(__builtin_constant_p(i) ? OF_BSWAP64_CONST(i) : OF_BSWAP64_NONCONST(i))
#else
# define OF_BSWAP16(i) OF_BSWAP16_CONST(i)
# define OF_BSWAP32(i) OF_BSWAP32_CONST(i)
# define OF_BSWAP64(i) OF_BSWAP64_CONST(i)
#endif
static OF_INLINE float OF_CONST_FUNC
OF_BSWAP_FLOAT(float f)
{
union {
float f;
uint32_t i;
} u;
u.f = f;
u.i = OF_BSWAP32(u.i);
return u.f;
}
static OF_INLINE double OF_CONST_FUNC
OF_BSWAP_DOUBLE(double d)
{
union {
double d;
uint64_t i;
} u;
u.d = d;
u.i = OF_BSWAP64(u.i);
return u.d;
}
#ifdef OF_BIG_ENDIAN
# define OF_BSWAP16_IF_BE(i) OF_BSWAP16(i)
# define OF_BSWAP32_IF_BE(i) OF_BSWAP32(i)
# define OF_BSWAP64_IF_BE(i) OF_BSWAP64(i)
# define OF_BSWAP16_IF_LE(i) (i)
# define OF_BSWAP32_IF_LE(i) (i)
# define OF_BSWAP64_IF_LE(i) (i)
#else
# define OF_BSWAP16_IF_BE(i) (i)
# define OF_BSWAP32_IF_BE(i) (i)
# define OF_BSWAP64_IF_BE(i) (i)
# define OF_BSWAP16_IF_LE(i) OF_BSWAP16(i)
# define OF_BSWAP32_IF_LE(i) OF_BSWAP32(i)
# define OF_BSWAP64_IF_LE(i) OF_BSWAP64(i)
#endif
#ifdef OF_FLOAT_BIG_ENDIAN
# define OF_BSWAP_FLOAT_IF_BE(i) OF_BSWAP_FLOAT(i)
# define OF_BSWAP_DOUBLE_IF_BE(i) OF_BSWAP_DOUBLE(i)
# define OF_BSWAP_FLOAT_IF_LE(i) (i)
# define OF_BSWAP_DOUBLE_IF_LE(i) (i)
#else
# define OF_BSWAP_FLOAT_IF_BE(i) (i)
# define OF_BSWAP_DOUBLE_IF_BE(i) (i)
# define OF_BSWAP_FLOAT_IF_LE(i) OF_BSWAP_FLOAT(i)
# define OF_BSWAP_DOUBLE_IF_LE(i) OF_BSWAP_DOUBLE(i)
#endif
/*
* We define it here and not in objfw-defs.h, as it would be theoretically
* possible to build a universal binary for Mac OS X and iOS.
*/
#if defined(__APPLE__) && defined(__arm__)
# define OF_IOS
#endif
#define OF_ROL(value, bits) \
(((value) << ((bits) % (sizeof(value) * 8))) | \
((value) >> (sizeof(value) * 8 - ((bits) % (sizeof(value) * 8)))))
#define OF_ROR(value, bits) \
(((value) >> ((bits) % (sizeof(value) * 8))) | \
((value) << (sizeof(value) * 8 - ((bits) % (sizeof(value) * 8)))))
#define OF_HASH_INIT(hash) hash = of_hash_seed
#define OF_HASH_ADD(hash, byte) \
{ \
hash += (uint8_t)(byte); \
hash += (hash << 10); \
hash ^= (hash >> 6); \
}
#define OF_HASH_FINALIZE(hash) \
{ \
hash += (hash << 3); \
hash ^= (hash >> 11); \
hash += (hash << 15); \
}
#define OF_HASH_ADD_HASH(hash, other) \
{ \
uint32_t otherCopy = other; \
OF_HASH_ADD(hash, (otherCopy >> 24) & 0xFF); \
OF_HASH_ADD(hash, (otherCopy >> 16) & 0xFF); \
OF_HASH_ADD(hash, (otherCopy >> 8) & 0xFF); \
OF_HASH_ADD(hash, otherCopy & 0xFF); \
}
static OF_INLINE of_range_t
of_range(size_t start, size_t length)
{
of_range_t range = { start, length };
return range;
}
static OF_INLINE of_point_t
of_point(float x, float y)
{
of_point_t point = { x, y };
return point;
}
static OF_INLINE of_dimension_t
of_dimension(float width, float height)
{
of_dimension_t dimension = { width, height };
return dimension;
}
static OF_INLINE of_rectangle_t
of_rectangle(float x, float y, float width, float height)
{
of_rectangle_t rectangle = {
of_point(x, y),
of_dimension(width, height)
};
return rectangle;
}