forked from xuos/xiuos
153 lines
5.2 KiB
C
153 lines
5.2 KiB
C
/**
|
|
* @file
|
|
* various utility macros
|
|
*/
|
|
|
|
/*
|
|
* 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>
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* @defgroup perf Performance measurement
|
|
* @ingroup sys_layer
|
|
* All defines related to this section must not be placed in lwipopts.h,
|
|
* but in arch/perf.h!
|
|
* Measurement calls made throughout lwip, these can be defined to nothing.
|
|
* - PERF_START: start measuring something.
|
|
* - PERF_STOP(x): stop measuring something, and record the result.
|
|
*/
|
|
|
|
#ifndef LWIP_HDR_DEF_H
|
|
#define LWIP_HDR_DEF_H
|
|
|
|
/* arch.h might define NULL already */
|
|
#include "lwip/arch.h"
|
|
#include "lwip/opt.h"
|
|
#if LWIP_PERF
|
|
#include "arch/perf.h"
|
|
#else /* LWIP_PERF */
|
|
#define PERF_START /* null definition */
|
|
#define PERF_STOP(x) /* null definition */
|
|
#endif /* LWIP_PERF */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define LWIP_MAX(x , y) (((x) > (y)) ? (x) : (y))
|
|
#define LWIP_MIN(x , y) (((x) < (y)) ? (x) : (y))
|
|
|
|
/* Get the number of entries in an array ('x' must NOT be a pointer!) */
|
|
#define LWIP_ARRAYSIZE(x) (sizeof(x)/sizeof((x)[0]))
|
|
|
|
/** Create u32_t value from bytes */
|
|
#define LWIP_MAKEU32(a,b,c,d) (((u32_t)((a) & 0xff) << 24) | \
|
|
((u32_t)((b) & 0xff) << 16) | \
|
|
((u32_t)((c) & 0xff) << 8) | \
|
|
(u32_t)((d) & 0xff))
|
|
|
|
#ifndef NULL
|
|
#ifdef __cplusplus
|
|
#define NULL 0
|
|
#else
|
|
#define NULL ((void *)0)
|
|
#endif
|
|
#endif
|
|
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#define lwip_htons(x) ((u16_t)(x))
|
|
#define lwip_ntohs(x) ((u16_t)(x))
|
|
#define lwip_htonl(x) ((u32_t)(x))
|
|
#define lwip_ntohl(x) ((u32_t)(x))
|
|
#define PP_HTONS(x) ((u16_t)(x))
|
|
#define PP_NTOHS(x) ((u16_t)(x))
|
|
#define PP_HTONL(x) ((u32_t)(x))
|
|
#define PP_NTOHL(x) ((u32_t)(x))
|
|
#else /* BYTE_ORDER != BIG_ENDIAN */
|
|
#ifndef lwip_htons
|
|
u16_t lwip_htons(u16_t x);
|
|
#endif
|
|
#define lwip_ntohs(x) lwip_htons(x)
|
|
|
|
#ifndef lwip_htonl
|
|
u32_t lwip_htonl(u32_t x);
|
|
#endif
|
|
#define lwip_ntohl(x) lwip_htonl(x)
|
|
|
|
/* These macros should be calculated by the preprocessor and are used
|
|
with compile-time constants only (so that there is no little-endian
|
|
overhead at runtime). */
|
|
#define PP_HTONS(x) ((u16_t)((((x) & (u16_t)0x00ffU) << 8) | (((x) & (u16_t)0xff00U) >> 8)))
|
|
#define PP_NTOHS(x) PP_HTONS(x)
|
|
#define PP_HTONL(x) ((((x) & (u32_t)0x000000ffUL) << 24) | \
|
|
(((x) & (u32_t)0x0000ff00UL) << 8) | \
|
|
(((x) & (u32_t)0x00ff0000UL) >> 8) | \
|
|
(((x) & (u32_t)0xff000000UL) >> 24))
|
|
#define PP_NTOHL(x) PP_HTONL(x)
|
|
#endif /* BYTE_ORDER == BIG_ENDIAN */
|
|
|
|
/* Provide usual function names as macros for users, but this can be turned off */
|
|
#ifndef LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS
|
|
#define htons(x) lwip_htons(x)
|
|
#define ntohs(x) lwip_ntohs(x)
|
|
#define htonl(x) lwip_htonl(x)
|
|
#define ntohl(x) lwip_ntohl(x)
|
|
#endif
|
|
|
|
/* Functions that are not available as standard implementations.
|
|
* In cc.h, you can #define these to implementations available on
|
|
* your platform to save some code bytes if you use these functions
|
|
* in your application, too.
|
|
*/
|
|
|
|
#ifndef lwip_itoa
|
|
/* This can be #defined to itoa() or snprintf(result, bufsize, "%d", number) depending on your platform */
|
|
void lwip_itoa(char* result, size_t bufsize, int number);
|
|
#endif
|
|
#ifndef lwip_strnicmp
|
|
/* This can be #defined to strnicmp() or strncasecmp() depending on your platform */
|
|
int lwip_strnicmp(const char* str1, const char* str2, size_t len);
|
|
#endif
|
|
#ifndef lwip_stricmp
|
|
/* This can be #defined to stricmp() or strcasecmp() depending on your platform */
|
|
int lwip_stricmp(const char* str1, const char* str2);
|
|
#endif
|
|
#ifndef lwip_strnstr
|
|
/* This can be #defined to strnstr() depending on your platform */
|
|
char* lwip_strnstr(const char* buffer, const char* token, size_t n);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* LWIP_HDR_DEF_H */
|