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https://codeberg.org/ziglang/zig.git
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195 lines
4.6 KiB
C
Vendored
195 lines
4.6 KiB
C
Vendored
/*
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* Copyright (c) 1999-2023 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _OS_OSBYTEORDERARM_H
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#define _OS_OSBYTEORDERARM_H
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#if defined (__arm__) || defined(__arm64__)
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#include <stdint.h>
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#include <libkern/arm/_OSByteOrder.h>
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#include <sys/_types/_os_inline.h>
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#include <arm/arch.h> /* for _ARM_ARCH_6 */
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/* Functions for byte reversed loads. */
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struct _OSUnalignedU16 {
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volatile uint16_t __val;
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} __attribute__((__packed__));
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struct _OSUnalignedU32 {
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volatile uint32_t __val;
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} __attribute__((__packed__));
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struct _OSUnalignedU64 {
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volatile uint64_t __val;
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} __attribute__((__packed__));
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
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OS_INLINE
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uint16_t
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_OSReadSwapInt16(
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const volatile void * _base,
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uintptr_t _offset
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)
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{
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return _OSSwapInt16(((struct _OSUnalignedU16 *)((uintptr_t)_base + _offset))->__val);
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}
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#else
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OS_INLINE
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uint16_t
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OSReadSwapInt16(
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const volatile void * _base,
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uintptr_t _offset
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)
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{
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return _OSSwapInt16(((struct _OSUnalignedU16 *)((uintptr_t)_base + _offset))->__val);
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}
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#endif
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
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OS_INLINE
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uint32_t
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_OSReadSwapInt32(
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const volatile void * _base,
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uintptr_t _offset
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)
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{
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return _OSSwapInt32(((struct _OSUnalignedU32 *)((uintptr_t)_base + _offset))->__val);
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}
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#else
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OS_INLINE
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uint32_t
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OSReadSwapInt32(
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const volatile void * _base,
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uintptr_t _offset
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)
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{
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return _OSSwapInt32(((struct _OSUnalignedU32 *)((uintptr_t)_base + _offset))->__val);
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}
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#endif
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
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OS_INLINE
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uint64_t
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_OSReadSwapInt64(
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const volatile void * _base,
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uintptr_t _offset
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)
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{
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return _OSSwapInt64(((struct _OSUnalignedU64 *)((uintptr_t)_base + _offset))->__val);
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}
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#else
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OS_INLINE
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uint64_t
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OSReadSwapInt64(
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const volatile void * _base,
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uintptr_t _offset
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)
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{
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return _OSSwapInt64(((struct _OSUnalignedU64 *)((uintptr_t)_base + _offset))->__val);
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}
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#endif
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/* Functions for byte reversed stores. */
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
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OS_INLINE
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void
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_OSWriteSwapInt16(
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volatile void * _base,
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uintptr_t _offset,
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uint16_t _data
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)
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{
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((struct _OSUnalignedU16 *)((uintptr_t)_base + _offset))->__val = _OSSwapInt16(_data);
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}
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#else
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OS_INLINE
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void
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OSWriteSwapInt16(
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volatile void * _base,
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uintptr_t _offset,
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uint16_t _data
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)
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{
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((struct _OSUnalignedU16 *)((uintptr_t)_base + _offset))->__val = _OSSwapInt16(_data);
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}
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#endif
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
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OS_INLINE
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void
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_OSWriteSwapInt32(
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volatile void * _base,
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uintptr_t _offset,
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uint32_t _data
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)
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{
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((struct _OSUnalignedU32 *)((uintptr_t)_base + _offset))->__val = _OSSwapInt32(_data);
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}
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#else
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OS_INLINE
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void
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OSWriteSwapInt32(
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volatile void * _base,
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uintptr_t _offset,
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uint32_t _data
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)
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{
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((struct _OSUnalignedU32 *)((uintptr_t)_base + _offset))->__val = _OSSwapInt32(_data);
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}
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#endif
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
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OS_INLINE
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void
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_OSWriteSwapInt64(
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volatile void * _base,
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uintptr_t _offset,
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uint64_t _data
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)
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{
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((struct _OSUnalignedU64 *)((uintptr_t)_base + _offset))->__val = _OSSwapInt64(_data);
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}
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#else
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OS_INLINE
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void
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OSWriteSwapInt64(
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volatile void * _base,
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uintptr_t _offset,
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uint64_t _data
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)
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{
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((struct _OSUnalignedU64 *)((uintptr_t)_base + _offset))->__val = _OSSwapInt64(_data);
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}
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#endif
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#endif /* defined (__arm__) || defined(__arm64__) */
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#endif /* ! _OS_OSBYTEORDERARM_H */
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