ar_lib.c

Keil开发环境下ARM7内核单片机的ARTX RTOS内核源代码

/*----------------------------------------------------------------------------
 *      A R T X  -  K e r n e l
 *----------------------------------------------------------------------------
 *      Name:    AR_LIB.C
 *      Purpose: Library of interrupt protected functions
 *      Rev.:    V2.00 / 19-oct-2005
 *----------------------------------------------------------------------------
 *      This code is part of the ARTX-ARM kernel package of Keil Software.
 *      Copyright (c) 2004-2005 Keil Software. All rights reserved. 
 *---------------------------------------------------------------------------*/


#include "Kernel\ARTX_Config.h"
#include "Kernel\AR_Lib.h"

/*----------------------------------------------------------------------------
 *      Functions
 *---------------------------------------------------------------------------*/


/*--------------------------- _andw -----------------------------------------*/

void _andw (U16 *fptr, U16 mask) __swi (1) {
   /* A protected function to clear event flags. */
   *fptr &= mask;
}


/*--------------------------- _orw ------------------------------------------*/

void _orw (U16 *fptr, U16 mask) __swi (2) {
   /* A protected function to set event flags. */
   *fptr |= mask;
}


/*--------------------------- _incw -----------------------------------------*/

void _incw (U16 *fptr) __swi (3) {
   /* A protected function to increment a 16-bit variable. */
   *fptr += 1;
}


/*--------------------------- _decw -----------------------------------------*/

void _decw (U16 *fptr) __swi (4) {
   /* A protected function to decrement a 16-bit variable. */
   *fptr -= 1;
}


/*--------------------------- _inc16 ----------------------------------------*/

void _inc16 (U16 *idx) __swi (5) {
   /* Protected function to increment queue index. */
   *idx = (*idx + 1) & 0x0F;
}


/*--------------------------- _test_bool ------------------------------------*/

#pragma warning disable = 135       /* Disable 'no return value' warning     */

BOOL tstclrb (BIT *bp) __arm {
   /* Protected function to return a variable value and clear it to 0. */
   __asm {
      MOV    R1,#0
      SWPB   R0,R1,[bp]
   }
}


/*----------------------------------------------------------------------------
 * end of file
 *---------------------------------------------------------------------------*/