/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012
* 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>
#if defined(OF_APPLE_RUNTIME) || defined(OF_GNU_RUNTIME)
# import <objc/runtime.h>
#elif defined(OF_OLD_GNU_RUNTIME)
# import <objc/objc-api.h>
#endif
#ifdef _PSP
# define INTMAX_MAX LONG_LONG_MAX
#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
#if defined(__GNUC__)
# define restrict __restrict__
#elif __STDC_VERSION__ < 199901L
# define restrict
#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_ENDIANESS_NATIVE OF_ENDIANESS_BIG_ENDIAN
#else
# define OF_ENDIANESS_NATIVE OF_ENDIANESS_LITTLE_ENDIAN
#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
# endif
#endif
#if defined(OF_OLD_GNU_RUNTIME) || defined(OF_OBJFW_RUNTIME)
# define objc_lookUpClass objc_lookup_class
#endif
#ifdef OF_OLD_GNU_RUNTIME
# define class_getInstanceSize class_get_instance_size
# define class_getName class_get_class_name
# define class_getSuperclass class_get_super_class
# define sel_getName sel_get_name
# define sel_registerName sel_get_uid
#endif
#ifndef _WIN32
# define OF_PATH_DELIMITER '/'
#else
# define OF_PATH_DELIMITER '\\'
#endif
#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_ARM_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_ARM_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;
}
static OF_INLINE void
of_bswap32_vec(uint32_t *buffer, size_t length)
{
while (length--) {
*buffer = of_bswap32(*buffer);
buffer++;
}
}
#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)
# define of_bswap32_vec_if_be(buffer, length) of_bswap32_vec(buffer, length)
#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)
# define of_bswap32_vec_if_be(buffer, length)
#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(__MACH__) && 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_HASH_INIT(hash) hash = 0
#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(int x, int y)
{
of_point_t point = { x, y };
return point;
}
static OF_INLINE of_dimension_t
of_dimension(int width, int height)
{
of_dimension_t dimension = { width, height };
return dimension;
}
static OF_INLINE of_rectangle_t
of_rectangle(int x, int y, int width, int height)
{
of_rectangle_t rectangle = {
of_point(x, y),
of_dimension(width, height)
};
return rectangle;
}