rom/kernel/kernel_intr.h

   1 #include <proto/exec.h>
   2
   3 /* Main scheduler entry points */
   4 void core_ExitInterrupt(regs_t *regs);
   5 void core_SysCall(int sc, regs_t *regs);
   6
   7 /* CPU-specific wrappers. Need to be implemented in CPU-specific parts */
   8 void cpu_Switch(regs_t *regs);
   9 void cpu_Dispatch(regs_t *regs);
  10
  11 /* This constant can be redefined this in arch-specific includes */
  12 #ifndef _CUSTOM
  13 #define _CUSTOM NULL
  14 #endif
  15
  16 /* Call exec interrupt vector, if present */
  17 static inline void core_Cause(unsigned char n, unsigned int mask)
  18 {
  19     struct IntVector *iv = &SysBase->IntVects[n];
  20
  21     /* If the SoftInt vector in SysBase is set, call it. It will do the rest for us */
  22     if (iv->iv_Code)
  23         AROS_UFC5(void, iv->iv_Code,
  24                   AROS_UFCA(ULONG, mask, D1),
  25                   AROS_UFCA(APTR, _CUSTOM, A0),
  26                   AROS_UFCA(APTR, iv->iv_Data, A1),
  27                   AROS_UFCA(APTR, iv->iv_Code, A5),
  28                   AROS_UFCA(struct ExecBase *, SysBase, A6));
  29 }
  30
  31 /* Call exec trap handler, if possible */
  32 static inline int core_Trap(ULONG code, void *regs)
  33 {
  34     /* exec.library Alert() is inoperative without KernelBase */
  35     if (SysBase && KernelBase)
  36     {
  37         void (*trapHandler)(ULONG, void *) = SysBase->TaskTrapCode;
  38         struct Task *t = SysBase->ThisTask;
  39
  40         if (t)
  41         {
  42             if (t->tc_TrapCode)
  43                 trapHandler = t->tc_TrapCode;
  44         }
  45
  46         if (trapHandler)
  47         {
  48             trapHandler(code, regs);
  49             return 1;
  50         }
  51     }
  52     return 0;
  53 }