rom/kernel/kernel_intr.h

   1 #include <proto/exec.h>
   2
   3 /* Main scheduler entry point */
   4 void core_ExitInterrupt(regs_t *regs);
   5 /* CPU-specific wrappers. Need to be implemented in CPU-specific parts */
   6 void cpu_Switch(regs_t *regs);
   7 void cpu_Dispatch(regs_t *regs);
   8
   9 /* This constant can be redefined this in arch-specific includes */
  10 #ifndef _CUSTOM
  11 #define _CUSTOM NULL
  12 #endif
  13
  14 /* Call exec interrupt vector, if present */
  15 static inline void core_Cause(unsigned char n, unsigned int mask)
  16 {
  17     struct IntVector *iv = &SysBase->IntVects[n];
  18
  19     /* If the SoftInt vector in SysBase is set, call it. It will do the rest for us */
  20     if (iv->iv_Code)
  21         AROS_UFC5(void, iv->iv_Code,
  22                   AROS_UFCA(ULONG, mask, D1),
  23                   AROS_UFCA(APTR, _CUSTOM, A0),
  24                   AROS_UFCA(APTR, iv->iv_Data, A1),
  25                   AROS_UFCA(APTR, iv->iv_Code, A5),
  26                   AROS_UFCA(struct ExecBase *, SysBase, A6));
  27 }
  28
  29 /* Call exec trap handler, if possible */
  30 static inline int core_Trap(ULONG code, void *regs)
  31 {
  32     /* exec.library Alert() is inoperative without KernelBase */
  33     if (SysBase && KernelBase)
  34     {
  35         void (*trapHandler)(ULONG, void *) = SysBase->TaskTrapCode;
  36         struct Task *t = SysBase->ThisTask;
  37
  38         if (t)
  39         {
  40             if (t->tc_TrapCode)
  41                 trapHandler = t->tc_TrapCode;
  42         }
  43
  44         if (trapHandler)
  45         {
  46             trapHandler(code, regs);
  47             return 1;
  48         }
  49     }
  50     return 0;
  51 }