gonzui

    1: /*
    2:  *----------------------------------------------------------------------
    3:  *    micro T-Kernel 3.00.03
    4:  *
    5:  *    Copyright (C) 2006-2021 by Ken Sakamura.
    6:  *    This software is distributed under the T-License 2.2.
    7:  *----------------------------------------------------------------------
    8:  *
    9:  *    Released by TRON Forum(http://www.tron.org) at 2021/03/31.
   10:  *
   11:  *----------------------------------------------------------------------
   12:  */
   13: 
   14: /*
   15:  *      syslib.h
   16:  *
   17:  *      micro T-Kernel System Library  (ARMv7-M core depended)
   18:  */
   19: 
   20: #ifndef __TK_SYSLIB_DEPEND_CORE_H__
   21: #define __TK_SYSLIB_DEPEND_CORE_H__
   22: 
   23: #include <tk/errno.h>
   24: #include <sys/sysdef.h>
   25: 
   26: /*----------------------------------------------------------------------*/
   27: /*
   28:  * CPU interrupt control for ARMv7-M.
   29:  *      As armv7-m architecture does not support disable interrupt in
   30:  *      xpsr register, we have to raise the excution priority to 
   31:  *      that the interrupt group have. Write the BASEPRI to implement 
   32:  *      disint.
   33:  */
   34: 
   35: IMPORT void set_basepri(UW intsts);     /* Set Base Priority register */
   36: IMPORT UW get_basepri(void);            /* Get Base Priority register */
   37: IMPORT UW disint(void);                 /* Disable interrupt */
   38: 
   39: 
   40: #define DI(intsts)              ( (intsts) = disint() )
   41: #define EI(intsts)              ( set_basepri(intsts) )
   42: #define isDI(intsts)            ( (intsts) != 0 )
   43: 
   44: #define INTLEVEL_DI             (0)
   45: #define INTLEVEL_EI             (255)
   46: 
   47: /*
   48:  * Interrupt priority grouping
   49:  *
   50:  *      PRIGROUP in the AIRCR register determins the split of group
   51:  *      priority from subpriority. PRIGROUP is initialized to 3
   52:  *      (pri:subpri = 4:4)) in the boot sequence.
   53:  */
   54: #define INTPRI_GROUP(pri, subpri)       (((pri) << (8-INTPRI_BITWIDTH)) | (subpri))
   55: 
   56: 
   57: /* ------------------------------------------------------------------------ */
   58: /*
   59:  * Convert to interrupt definition number
   60:  *
   61:  * For backward compatibility.
   62:  *      INTVEC has been obsoleted since micro T-Kernel 2.0.
   63:  */
   64: #define DINTNO(intvec)  (intvec)
   65: 
   66: #endif /* __TK_SYSLIB_DEPEND_CORE_H__ */