rom/kernel/kernel_intr.h

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6 */
   7
   8 #include <proto/exec.h>
   9
  10 /* Main scheduler entry points */
  11 void core_ExitInterrupt(regs_t *regs);
  12 void core_SysCall(int sc, regs_t *regs);
  13
  14 /* CPU-specific wrappers. Need to be implemented in CPU-specific parts */
  15 void cpu_Switch(regs_t *regs);
  16 void cpu_Dispatch(regs_t *regs);
  17
  18 /* This constant can be redefined this in arch-specific includes */
  19 #ifndef _CUSTOM
  20 #define _CUSTOM NULL
  21 #endif
  22
  23 /* Call exec interrupt vector, if present */
  24 static inline void core_Cause(unsigned char n, unsigned int mask)
  25 {
  26     struct IntVector *iv = &SysBase->IntVects[n];
  27
  28     /* If the SoftInt vector in SysBase is set, call it. It will do the rest for us */
  29     if (iv->iv_Code)
  30         AROS_INTC3(iv->iv_Code, iv->iv_Data, mask, _CUSTOM);
  31 }
  32
  33 /* Call exec trap handler, if possible */
  34 static inline int core_Trap(ULONG code, void *regs)
  35 {
  36     /* exec.library Alert() is inoperative without KernelBase,
  37      * but SysBase should not be valid if KernelBase is
  38      * not set up.
  39      */
  40     if (SysBase)
  41     {
  42         void (*trapHandler)(ULONG, void *) = SysBase->TaskTrapCode;
  43         struct Task *t = SysBase->ThisTask;
  44
  45         if (t)
  46         {
  47             if (t->tc_TrapCode)
  48                 trapHandler = t->tc_TrapCode;
  49         }
  50
  51         if (trapHandler)
  52         {
  53             trapHandler(code, regs);
  54             return 1;
  55         }
  56     }
  57     return 0;
  58 }