rom/kernel/kernel_intr.h

   1 #ifndef KERNEL_INTR_H
   2 #define KERNEL_INTR_H
   3 /*
   4     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   5     $Id$
   6
   7     Desc:
   8 */
   9
  10 #include <proto/exec.h>
  11
  12 #include "exec_platform.h"
  13
  14 /* Main scheduler entry points */
  15 void core_ExitInterrupt(regs_t *regs);
  16 void core_SysCall(int sc, regs_t *regs);
  17
  18 /* CPU-specific wrappers. Need to be implemented in CPU-specific parts */
  19 void cpu_Switch(regs_t *regs);
  20 void cpu_Dispatch(regs_t *regs);
  21
  22 /* This constant can be redefined this in arch-specific includes */
  23 #ifndef _CUSTOM
  24 #define _CUSTOM NULL
  25 #endif
  26
  27 /* Call exec interrupt vector, if present */
  28 static inline void core_Cause(unsigned char n, unsigned int mask)
  29 {
  30     struct IntVector *iv = &SysBase->IntVects[n];
  31
  32     /* If the SoftInt vector in SysBase is set, call it. It will do the rest for us */
  33     if (iv->iv_Code)
  34         AROS_INTC3(iv->iv_Code, iv->iv_Data, mask, _CUSTOM);
  35 }
  36
  37 /* Call exec trap handler, if possible */
  38 static inline int core_Trap(ULONG code, void *regs)
  39 {
  40     /* exec.library Alert() is inoperative without KernelBase,
  41      * but SysBase should not be valid if KernelBase is
  42      * not set up.
  43      */
  44     if (SysBase)
  45     {
  46         void (*trapHandler)(ULONG, void *) = SysBase->TaskTrapCode;
  47         struct Task *t = GET_THIS_TASK;
  48
  49         if (t)
  50         {
  51             if (t->tc_TrapCode)
  52                 trapHandler = t->tc_TrapCode;
  53         }
  54
  55         if (trapHandler)
  56         {
  57             trapHandler(code, regs);
  58             return 1;
  59         }
  60     }
  61     return 0;
  62 }
  63 #endif /* !KERNEL_INTR_H */