bit_defs.h
来自「澳洲人写的Cortex,包括uC_IP协议栈」· C头文件 代码 · 共 192 行
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<HTML><HEAD><TITLE>/home/asysweb/public_html/cortex/kernel/src/bit_defs.h</TITLE></HEAD><BODY><pre><font color="#6920ac">/*************************************************************************/</font><font color="#6920ac">/* */</font><font color="#6920ac">/* Copyright (c) 1997-1999 Australian Real Time Embedded Systems */</font><font color="#6920ac">/* */</font><font color="#6920ac">/* PROPRIETARY RIGHTS of Australian Real Time Embedded Systems */</font><font color="#6920ac">/* are involved in the subject matter of this material. All reproduction,*/</font><font color="#6920ac">/* manufacturing, use, and sales rights pertaining to this subject matter*/</font><font color="#6920ac">/* are governed by the license agreement. The recipient of this software */</font><font color="#6920ac">/* implicitly accepts the terms of the license. */</font><font color="#6920ac">/* */</font><font color="#6920ac">/*************************************************************************/</font><font color="#6920ac">/************************************************************************* * * FILE NAME * * bit_defs.h * * SYSTEM COMPONENT * * Bit Vectors * * DESCRIPTION * * This component provides simple interface to manipulate * variable length bit vectors. Bit vector defined as a * sequence of bits. * * SCCS HISTORY * * @(#)bit_defs.h 1.9, 01/25/99, 00:30:16 * * AUTHOR * * Vadim N. Azarovsky * * CREATED * * 22-Mar-1997 by Vadim N. Azarovsky * * REVISION HISTORY * * NAME DATE REMARKS * **************************************************************************/</font><b><font color='DarkGreen'>#ifndef</font></b><font color="maroon"> __BIT_DEFS__H</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="__BIT_DEFS__H">__BIT_DEFS__H</a></font><b><font color='DarkGreen'>#ifdef</font></b><font color="maroon"> __cplusplus</font><i>extern</i> <font color="DarkGreen">"C"</font> {<b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* __cplusplus */</font></font><b><font color='DarkGreen'>#include</font></b> <a href="crt_defs.h.FIND-INC"><font color="blue">"crt_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="limits.h.FIND-INC"><<font color="blue">limits.h</font>></a><font color="#6920ac">/*********************** * GLOBAL CONSTANSTS * ***********************/</font><font color="#6920ac">/* Number of bits per vbit_Unit_t data type. */</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_BPU">VBIT_BPU</a></font> ENVI_VBIT_BITS_PER_UNIT<b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_ID">VBIT_ID</a></font> 0x56424954UL <font color="#6920ac">/* "VBIT" */</font><font color="#6920ac">/* * Bit vector flags */</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_FLAG_INIT">VBIT_FLAG_INIT</a></font> 0x00 <font color="#6920ac">/* initialisation flags */</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_FLAG_VBIT_ALLOC">VBIT_FLAG_VBIT_ALLOC</a></font> 0x01 <font color="#6920ac">/* control block is allocated */</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_FLAG_ARRAY_ALLOC">VBIT_FLAG_ARRAY_ALLOC</a></font> 0x02 <font color="#6920ac">/* bit array is allocated */</font><font color="#6920ac">/******************* * GLOBAL MACROS * *******************/</font><b><font color='DarkGreen'>#if</font></b><font color="maroon"> VBIT_BPU == 8</font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_DIV_SHIFT">VBIT_DIV_SHIFT</a></font> 3<b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_MOD_MASK">VBIT_MOD_MASK</a></font> 0x7<b><font color='DarkGreen'>#elif</font></b><font color="maroon"> VBIT_BPU == 16</font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_DIV_SHIFT">VBIT_DIV_SHIFT</a></font> 4<b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_MOD_MASK">VBIT_MOD_MASK</a></font> 0xF<b><font color='DarkGreen'>#elif</font></b><font color="maroon"> VBIT_BPU == 32</font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_DIV_SHIFT">VBIT_DIV_SHIFT</a></font> 5<b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_MOD_MASK">VBIT_MOD_MASK</a></font> 0x1F<b><font color='DarkGreen'>#else</font></b><font color="maroon"></font><b><font color='DarkGreen'># error</font></b><font color="maroon"> Unsupported unit size. Can be 8, 16 or 32 bits per unit only.</font><b><font color='DarkGreen'>#endif</font></b><font color="maroon"></font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_MOD">VBIT_MOD</a></font>(_arg) ((_arg)&VBIT_MOD_MASK)<b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_DIV">VBIT_DIV</a></font>(_arg) ((_arg)>>VBIT_DIV_SHIFT)<b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_UNITS">VBIT_UNITS</a></font>(_arg) (VBIT_DIV((_arg)+VBIT_BPU-1))<b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="VBIT_UNIT_ARRAY">VBIT_UNIT_ARRAY</a></font>(_name,_bits) \ <i>vbit_Unit_t</i> _name[<a href="#VBIT_UNITS">VBIT_UNITS</a>(_bits)]<b><font color='DarkGreen'>#if</font></b><font color="maroon"> ENVI_CRTX_ERR_CHECK_LEVEL == 0</font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_SET_VBIT_ID">VBIT_SET_VBIT_ID</a></font>(_vbit) <b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_CHECK_VBIT_ID">VBIT_CHECK_VBIT_ID</a></font>(_vbit) (CRTX_TRUE)<b><font color='DarkGreen'>#else</font></b><font color="maroon"></font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_SET_VBIT_ID">VBIT_SET_VBIT_ID</a></font>(_vbit) ((_vbit)->CheckID=VBIT_ID)<b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="VBIT_CHECK_VBIT_ID">VBIT_CHECK_VBIT_ID</a></font>(_vbit) ((_vbit)->CheckID==VBIT_ID)<b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* ENVI_CRTX_ERR_CHECK_LEVEL == 0 */</font></font><font color="#6920ac">/*********************** * GLOBAL DATA TYPES * ***********************/</font><b><font color='DarkGreen'>#if</font></b><font color="maroon"> ENVI_VBIT_BITS_PER_UNIT == 8</font><i><a name="vbit_Unit_t">typedef</a></i> <i>unsigned</i> <i>char</i> <i><font color='DarkBlue'>vbit_Unit_t</font></i>;<b><font color='DarkGreen'>#elif</font></b><font color="maroon"> ENVI_VBIT_BITS_PER_UNIT == 16</font><i><a name="vbit_Unit_t">typedef</a></i> <i>unsigned</i> <i>short</i> <i><font color='DarkBlue'>vbit_Unit_t</font></i>;<b><font color='DarkGreen'>#elif</font></b><font color="maroon"> ENVI_VBIT_BITS_PER_UNIT == 32</font><i><a name="vbit_Unit_t">typedef</a></i> <i>unsigned</i> <i>long</i> <i><font color='DarkBlue'>vbit_Unit_t</font></i>;<b><font color='DarkGreen'>#else</font></b><font color="maroon"></font><b><font color='DarkGreen'>#error</font></b><font color="maroon"> Not allowed number of bits per unit specified (use 8, 16 or 32 values)</font><b><font color='DarkGreen'>#endif</font></b><font color="maroon"></font><font color="#6920ac">/* Bit Vector control block */</font><i><a name="vbit_t">typedef</a></i> <i>struct</i> { <i>crtx_Int_t</i> Length; <font color="#6920ac">/* number og bits */</font> <i>vbit_Unit_t</i> *pUnits; <font color="#6920ac">/* pointer to bits storage */</font> <i>crtx_SegNum_t</i> Segment; <font color="#6920ac">/* memory segment */</font> <i>crtx_Int_t</i> Flags; <font color="#6920ac">/* flags */</font><b><font color='DarkGreen'>#if</font></b><font color="maroon"> ENVI_CRTX_ERR_CHECK_LEVEL > 0</font> <i>crtx_Uint32_t</i> CheckID; <font color="#6920ac">/* control block id */</font><b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* ENVI_CRTX_ERR_CHECK_LEVEL > 0 */</font></font>} <font color='DarkBlue'>vbit_t</font>;<font color="#6920ac">/* Bit vector attributes structure */</font><i><a name="vbit_Attr_t">typedef</a></i> <i>struct</i> { <i>crtx_SegNum_t</i> Segment; <font color="#6920ac">/* memory segment */</font>} <i><font color='DarkBlue'>vbit_Attr_t</font></i>;<font color="#6920ac">/***************** * GLOBAL DATA * *****************/</font><i>extern</i> <i>vbit_Attr_t</i> vbit_AttrDefault_g;<font color="#6920ac">/*************************** * PROCEDURES PROTOTYPES * ***************************/</font><font color="#6920ac">/* create a new bit vector */</font><font size="+1">vbit_t *<a href="vbit_Create.FIND-FUNC">vbit_Create</a> (<i>crtx_Int_t</i> Length_a, vbit_t *pVbit_a, <i>vbit_Unit_t</i> *pUnits_a, <i>vbit_Attr_t</i> *pAttr_a);</font><font color="#6920ac">/* destroy a bit vector previously created by vbit_Create */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_Destroy.FIND-FUNC">vbit_Destroy</a>(vbit_t **ppVbit_a);</font><font color="#6920ac">/* set all bits to zero */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_ClrAll.FIND-FUNC">vbit_ClrAll</a> (vbit_t *pVbit_a);</font><font color="#6920ac">/* set all bits to one */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_SetAll.FIND-FUNC">vbit_SetAll</a> (vbit_t *pVbit_a);</font><font color="#6920ac">/* inverts all bits */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_NotAll.FIND-FUNC">vbit_NotAll</a> (vbit_t *pVbit_a);</font><font color="#6920ac">/* set bits within specified range to zero */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_Clear.FIND-FUNC">vbit_Clear</a> (vbit_t *pVbit_a, <i>crtx_Int_t</i> Low, <i>crtx_Int_t</i> High);</font><font color="#6920ac">/* set bits within specified range to one */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_Set.FIND-FUNC">vbit_Set</a> (vbit_t *pVbit_a, <i>crtx_Int_t</i> Low, <i>crtx_Int_t</i> High);</font><font color="#6920ac">/* inverts bits within specified range */</font><font size="+1"><i>crtx_Void_t</i> <a href="vbit_Not.FIND-FUNC">vbit_Not</a> (vbit_t *pVbit_a, <i>crtx_Int_t</i> Low, <i>crtx_Int_t</i> High);</font><font color="#6920ac">/* return specified bit from bit vector */</font><font size="+1"><i>crtx_Int_t</i> <a href="vbit_Get.FIND-FUNC">vbit_Get</a> (vbit_t *pVbit_a, <i>crtx_Int_t</i> BitNum_a);</font><font color="#6920ac">/* set specified bit and retutn the previous value */</font><font size="+1"><i>crtx_Int_t</i> <a href="vbit_Put.FIND-FUNC">vbit_Put</a> (vbit_t *pVbit_a, <i>crtx_Int_t</i> BitNum_a, <i>crtx_Int_t</i> BitValue_a);</font><font color="#6920ac">/* ===== END OF THE DEFINITION FILE ===== */</font><b><font color='DarkGreen'>#ifdef</font></b><font color="maroon"> __cplusplus</font>}<b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* __cplusplus */</font></font><b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* __BIT_DEFS__H */</font></font></pre></BODY></HTML>⌨️ 快捷键说明
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