common/utility.h

/******************************************************************************
 * @file     utility.h
 *
 * @brief    for TLSR chips
 *
 * @author   public@telink-semi.com;
 * @date     Sep. 30, 2010
 *
 * @attention
 *
 *  Copyright (C) 2019-2020 Telink Semiconductor (Shanghai) Co., Ltd.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *****************************************************************************/

#pragma once
#include "types.h"

#define abs(a)   (((a)>0)?((a)):(-(a)))

#define cat2(i,j)       i##j
#define cat3(i,j,k)     i##j##k

#ifndef min
#define min(a,b)    ((a) < (b) ? (a) : (b))
#endif

#ifndef min2
#define min2(a,b)    ((a) < (b) ? (a) : (b))
#endif

#ifndef min3
#define min3(a,b,c)    min2(min2(a, b), c)
#endif

#ifndef max2
#define max2(a,b)    ((a) > (b) ? (a): (b))
#endif

#ifndef max3
#define max3(a,b,c)    max2(max2(a, b), c)
#endif

#define OFFSETOF(s, m)             ((unsigned int) &((s *)0)->m)
#define ROUND_INT(x, r)            (((x) + (r) - 1) / (r) * (r))
#define ROUND_TO_POW2(x, r)        (((x) + (r) - 1) & ~((r) - 1))

//  direct memory access
#define U8_GET(addr)            (*(volatile unsigned char  *)(addr))
#define U16_GET(addr)            (*(volatile unsigned short *)(addr))
#define U32_GET(addr)            (*(volatile unsigned int  *)(addr))

#define U8_SET(addr, v)            (*(volatile unsigned char  *)(addr) = (unsigned char)(v))
#define U16_SET(addr, v)        (*(volatile unsigned short *)(addr) = (unsigned short)(v))
#define U32_SET(addr, v)        (*(volatile unsigned int  *)(addr) = (v))

#define U8_INC(addr)            U8_GET(addr) += 1
#define U16_INC(addr)            U16_GET(addr) += 1
#define U32_INC(addr)            U32_GET(addr) += 1

#define U8_DEC(addr)            U8_GET(addr) -= 1
#define U16_DEC(addr)            U16_GET(addr) -= 1
#define U32_DEC(addr)            U32_GET(addr) -= 1

#define U8_CPY(addr1,addr2)        U8_SET(addr1, U8_GET(addr2))
#define U16_CPY(addr1,addr2)    U16_SET(addr1, U16_GET(addr2))
#define U32_CPY(addr1,addr2)    U32_SET(addr1, U32_GET(addr2))

#define MAKE_U16(h,l)             ((unsigned short)(((h) << 8) | (l)))
#define MAKE_U32(a,b,c,d)        ((unsigned int)(((a) << 24) | ((b) << 16) | ((c) << 8) | (d)))

#define BOUND(x, l, m)            ((x) < (l) ? (l) : ((x) > (m) ? (m) : (x)))
#define SET_BOUND(x, l, m)        ((x) = BOUND(x, l, m))
#define BOUND_INC(x, m)            do{++(x); (x) = (x) < (m) ? (x) :0;} while(0)
#define BOUND_INC_POW2(x, m)    do{                                \
                                    STATIC_ASSERT_POW2(m);        \
                                    (x) = ((x)+1) & (m-1);        \
                                }while(0)

#define IS_POWER_OF_2(x)        (!(x & (x-1)))
#define IS_LITTLE_ENDIAN         (*(unsigned short*)"\0\xff" > 0x100)

#define IMPLIES(x, y)             (!(x) || (y))

// x > y ? 1 : (x ==y : 0 ? -1)
#define COMPARE(x, y)             (((x) > (y)) - ((x) < (y)))
#define SIGN(x)                 COMPARE(x, 0)

// better than xor swap:  http://stackoverflow.com/questions/3912699/why-swap-with-xor-works-fine-in-c-but-in-java-doesnt-some-puzzle
#define SWAP(x, y, T)             do { T tmp = (x); (x) = (y); (y) = tmp; } while(0)
#define SORT2(a, b, T)             do { if ((a) > (b)) SWAP((a), (b), T); } while (0)

#define foreach(i, n)             for(int i = 0; i < (n); ++i)
#define foreach_range(i, s, e)     for(int i = (s); i < (e); ++i)
#define foreach_arr(i, arr)     for(int i = 0; i < ARRAY_SIZE(arr); ++i)
//  round robbin foreach,   ´ÓÉÏÒ»¸öÖ¸¶¨µÄµã¿ªÊ¼£¬±éÀú,  h ÊÇÒ»¸ö¾²Ì¬±äÁ¿»òÈ«¾Ö±äÁ¿£¬Òª¼ÇסÉÏÒ»´ÎµÄλÖá£h ³õʼֵÊÇn !!!
#define foreach_hint(i, n, h)     for(int i = 0, ++h, h=h<n?h:0; i < n; ++h, h=h<n?h:0)

#define ARRAY_SIZE(a)             (sizeof(a) / sizeof(*a))

#define everyN(i, n)             ++(i); (i)=((i) < N ? (i) : 0); if(0 == (i))

#define U16_HI(a)    (((a) >> 8) & 0xFF)
#define U16_LO(a)    ((a) & 0xFF)

#define U32_BYTE0(a) ((a) & 0xFF)
#define U32_BYTE1(a) (((a) >> 8) & 0xFF)
#define U32_BYTE2(a) (((a) >> 16) & 0xFF)
#define U32_BYTE3(a) (((a) >> 24) & 0xFF)



void swapN (unsigned char *p, int n);
void swapX(const u8 *src, u8 *dst, int len);

void swap24(u8 dst[3], const u8 src[3]);
void swap32(u8 dst[4], const u8 src[4]);
void swap48(u8 dst[6], const u8 src[6]);
void swap56(u8 dst[7], const u8 src[7]);

void swap64(u8 dst[8], const u8 src[8]);

void swap128(u8 dst[16], const u8 src[16]);

void net_store_16(u8 *buffer, u16 pos, u16 value);

void flip_addr(u8 *dest, u8 *src);

void store_16(u8 *buffer, u16 pos, u16 value);
void freeTimerTask(void **arg);


typedef    struct {
    u32        size;
    u16        num;
    u8        wptr;
    u8        rptr;
    u8*        p;
}    my_fifo_t;

void my_fifo_init (my_fifo_t *f, int s, u8 n, u8 *p);
u8* my_fifo_wptr (my_fifo_t *f);
void my_fifo_next (my_fifo_t *f);
int my_fifo_push (my_fifo_t *f, u8 *p, int n);
void my_fifo_pop (my_fifo_t *f);
u8 * my_fifo_get (my_fifo_t *f);

#define        MYFIFO_INIT(name,size,n)        u8 name##_b[size * n]={0};my_fifo_t name = {size,n,0,0, name##_b}