rom/kernel/kernel_intr.h

   1 #ifndef KERNEL_INTR_H
   2 #define KERNEL_INTR_H
   3
   4 /*
   5     Copyright © 1995-2018, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc:
   9 */
  10
  11 #include <proto/exec.h>
  12
  13 #include "exec_platform.h"
  14
  15 /* Main scheduler entry points */
  16 void core_ExitInterrupt(regs_t *regs);
  17 void core_SysCall(int sc, regs_t *regs);
  18
  19 /* CPU-specific wrappers. Need to be implemented in CPU-specific parts */
  20 void cpu_Switch(regs_t *regs);
  21 void cpu_Dispatch(regs_t *regs);
  22
  23 /* This constant can be redefined in arch-specific includes */
  24 #ifndef _CUSTOM
  25 #define _CUSTOM NULL
  26 #endif
  27
  28 /* Call exec interrupt vector, if present */
  29 static inline void core_Cause(unsigned char n, unsigned int mask)
  30 {
  31     struct IntVector *iv = &SysBase->IntVects[n];
  32
  33     /* If the SoftInt vector in SysBase is set, call it. It will do the rest for us */
  34     if (iv->iv_Code)
  35         AROS_INTC3(iv->iv_Code, iv->iv_Data, mask, _CUSTOM);
  36 }
  37
  38 /* Call exec trap handler, if possible */
  39 static inline int core_Trap(ULONG code, void *regs)
  40 {
  41     /* exec.library Alert() is inoperative without KernelBase,
  42      * but SysBase should not be valid if KernelBase is
  43      * not set up.
  44      */
  45     if (SysBase)
  46     {
  47         void (*trapHandler)(ULONG, void *) = SysBase->TaskTrapCode;
  48         struct Task *t = GET_THIS_TASK;
  49
  50         if (t)
  51         {
  52             if (t->tc_TrapCode)
  53                 trapHandler = t->tc_TrapCode;
  54         }
  55
  56         if (trapHandler)
  57         {
  58             trapHandler(code, regs);
  59             return 1;
  60         }
  61     }
  62     return 0;
  63 }
  64 #endif /* !KERNEL_INTR_H */