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: #include <sys/machine.h>
   15: #ifdef CPU_CORE_RXV2
   16: /*
   17:  *      interrupt.c (RXv2)
   18:  *      Interrupt control
   19:  */
   20: 
   21: #include "kernel.h"
   22: #include "../../../sysdepend.h"
   23: 
   24: /* ------------------------------------------------------------------------ */
   25: /*
   26:  * Interrupt nest counter
   27:  */
   28: EXPORT  W        knl_int_nest = 0;      /* Interrupt nest counter */
   29: 
   30: 
   31: #if !USE_STATIC_IVT
   32: /* ------------------------------------------------------------------------ */
   33: /*
   34:  * Interrupt Vector table (RAM)
   35:  */
   36: 
   37: EXPORT FP knl_int_vect_ram[N_INTVEC] __attribute__ ((section (".data_ivector")));
   38: 
   39: /* ------------------------------------------------------------------------ */
   40: /*
   41:  * HLL(High level programming language) Interrupt Handler Table (RAM)
   42:  */
   43: EXPORT FP knl_hll_inthdr_ram[N_INTVEC] __attribute__ ((section (".data_hvector")));
   44: 
   45: #endif  /* !USE_STATIC_IVT */
   46: 
   47: /* ----------------------------------------------------------------------- */
   48: /*
   49:  * Set interrupt handler (Used in tk_def_int())
   50:  */
   51: #if !USE_STATIC_IVT
   52: EXPORT ER knl_define_inthdr( INT intno, ATR intatr, FP inthdr )
   53: {
   54:         /* check system interrupt number */
   55:         if((intno < INTNO_USER_MIN) || (intno == INTNO_SYS_TICK)) {
   56:                 return E_PAR;
   57:         }
   58: 
   59:         if(inthdr != NULL) {   /* define intrrupt handler */
   60:                 if ( (intatr & TA_HLNG) != 0 ) {
   61:                         knl_hll_inthdr_ram[intno] = inthdr;
   62:                         inthdr = knl_int_vect_rom[intno];    /* set HLL-Int handler entry */
   63:                 }
   64:         } else         {              /* Clear interrupt handler */
   65:                 knl_hll_inthdr_ram[intno] = knl_hll_inthdr_rom[intno - INTNO_USER_MIN];
   66:                 inthdr = knl_int_vect_rom[intno];     /* set HLL-Int handler entry */
   67:         }
   68: 
   69:         knl_int_vect_ram[intno] = inthdr;
   70: 
   71:         return E_OK;
   72: }
   73: #endif
   74: 
   75: /* ------------------------------------------------------------------------ */
   76: /*
   77:  * Interrupt initialize
   78:  */
   79: EXPORT ER knl_init_interrupt( void )
   80: {
   81:         /* Register exception handler used on OS                       */
   82:         /* There is no exception handler used in this implementation.  */
   83: 
   84:         return E_OK;
   85: }
   86: 
   87: 
   88: 
   89: #endif  /* CPU_CORE_RXV2 */