arch.h

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/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef LWIP_HDR_ARCH_H
#define LWIP_HDR_ARCH_H

#ifndef LITTLE_ENDIAN
#define LITTLE_ENDIAN 1234
#endif

#ifndef BIG_ENDIAN
#define BIG_ENDIAN 4321
#endif

#include "arch/cc.h"

#ifndef BYTE_ORDER
#define BYTE_ORDER LITTLE_ENDIAN
#endif

#ifdef __DOXYGEN__
#define LWIP_RAND() ((u32_t)rand())
#endif

#ifndef LWIP_PLATFORM_DIAG
#define LWIP_PLATFORM_DIAG(x) do {printf x;} while(0)
#include <stdio.h>
#include <stdlib.h>
#endif

#ifndef LWIP_PLATFORM_ASSERT
#define LWIP_PLATFORM_ASSERT(x) do {printf("Assertion \"%s\" failed at line %d in %s\n", \
                                     x, __LINE__, __FILE__); fflush(NULL); abort();} while(0)
#include <stdio.h>
#include <stdlib.h>
#endif

#ifndef LWIP_NO_STDDEF_H
#define LWIP_NO_STDDEF_H 0
#endif

#if !LWIP_NO_STDDEF_H
#include <stddef.h> /* for size_t */
#endif

#ifndef LWIP_NO_STDINT_H
#define LWIP_NO_STDINT_H 0
#endif

/* Define generic types used in lwIP */
#if !LWIP_NO_STDINT_H
#include <stdint.h>
typedef uint8_t   u8_t;
typedef int8_t    s8_t;
typedef uint16_t  u16_t;
typedef int16_t   s16_t;
typedef uint32_t  u32_t;
typedef int32_t   s32_t;
typedef uintptr_t mem_ptr_t;
#endif

#ifndef LWIP_NO_INTTYPES_H
#define LWIP_NO_INTTYPES_H 0
#endif

/* Define (sn)printf formatters for these lwIP types */
#if !LWIP_NO_INTTYPES_H
#include <inttypes.h>
#ifndef X8_F
#define X8_F  "02" PRIx8
#endif
#ifndef U16_F
#define U16_F PRIu16
#endif
#ifndef S16_F
#define S16_F PRId16
#endif
#ifndef X16_F
#define X16_F PRIx16
#endif
#ifndef U32_F
#define U32_F PRIu32
#endif
#ifndef S32_F
#define S32_F PRId32
#endif
#ifndef X32_F
#define X32_F PRIx32
#endif
#ifndef SZT_F
#define SZT_F PRIuPTR
#endif
#endif

#ifndef LWIP_NO_LIMITS_H
#define LWIP_NO_LIMITS_H 0
#endif

/* Include limits.h? */
#if !LWIP_NO_LIMITS_H
#include <limits.h>
#endif

#ifndef LWIP_CONST_CAST
#define LWIP_CONST_CAST(target_type, val) ((target_type)((ptrdiff_t)val))
#endif

#ifndef LWIP_ALIGNMENT_CAST
#define LWIP_ALIGNMENT_CAST(target_type, val) LWIP_CONST_CAST(target_type, val)
#endif

#ifndef LWIP_PTR_NUMERIC_CAST
#define LWIP_PTR_NUMERIC_CAST(target_type, val) LWIP_CONST_CAST(target_type, val)
#endif

#ifndef LWIP_DECLARE_MEMORY_ALIGNED
#define LWIP_DECLARE_MEMORY_ALIGNED(variable_name, size) u8_t variable_name[LWIP_MEM_ALIGN_BUFFER(size)]
#endif

#ifndef LWIP_MEM_ALIGN_SIZE
#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1U) & ~(MEM_ALIGNMENT-1U))
#endif

#ifndef LWIP_MEM_ALIGN_BUFFER
#define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1U))
#endif

#ifndef LWIP_MEM_ALIGN
#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
#endif

#ifdef __cplusplus
extern "C" {
#endif

#ifndef PACK_STRUCT_BEGIN
#define PACK_STRUCT_BEGIN
#endif /* PACK_STRUCT_BEGIN */

#ifndef PACK_STRUCT_END
#define PACK_STRUCT_END
#endif /* PACK_STRUCT_END */

#ifndef PACK_STRUCT_STRUCT
#if defined(__GNUC__) || defined(__clang__)
#define PACK_STRUCT_STRUCT __attribute__((packed))
#else
#define PACK_STRUCT_STRUCT
#endif
#endif /* PACK_STRUCT_STRUCT */

#ifndef PACK_STRUCT_FIELD
#define PACK_STRUCT_FIELD(x) x
#endif /* PACK_STRUCT_FIELD */

#ifndef PACK_STRUCT_FLD_8
#define PACK_STRUCT_FLD_8(x) PACK_STRUCT_FIELD(x)
#endif /* PACK_STRUCT_FLD_8 */

#ifndef PACK_STRUCT_FLD_S
#define PACK_STRUCT_FLD_S(x) PACK_STRUCT_FIELD(x)
#endif /* PACK_STRUCT_FLD_S */

#ifdef __DOXYGEN__
#define PACK_STRUCT_USE_INCLUDES
#endif

#ifndef LWIP_UNUSED_ARG
#define LWIP_UNUSED_ARG(x) (void)x
#endif /* LWIP_UNUSED_ARG */

#ifdef __cplusplus
}
#endif

#endif /* LWIP_HDR_ARCH_H */