arch/m68k-all/kernel/cpu_m68k.h

   1 /*
   2  * CPU-specific definitions.
   3  *
   4  * Architectures with the same CPU will likely share single kernel_cpu.h
   5  * in arch/$(CPU)-all/kernel/kernel_cpu.h
   6  *
   7  * As you can see, this file is just a sample.
   8  */
   9
  10 #ifndef CPU_M68K_H_
  11 #define CPU_M68K_H_
  12
  13 #include <aros/m68k/cpucontext.h>
  14 #include <aros/m68k/fpucontext.h>
  15
  16 /* Number of exceptions supported by the CPU. Needed by kernel_base.h */
  17 #define EXCEPTIONS_COUNT 256
  18
  19 /* CPU context stored in task's et_RegFrame. */
  20 struct AROSCPUContext
  21 {
  22         struct ExceptionContext cpu;
  23         struct FpuContext fpu;
  24 };
  25
  26 typedef struct ExceptionContext regs_t;
  27
  28 /*
  29  * Only Exec/PrepareContext needs this.
  30  */
  31 #define PREPARE_INITIAL_FRAME(cc, sp, startpc) \
  32         do { \
  33                 memset(cc, 0, sizeof(*cc)); \
  34                 cc->cpu.pc   = (IPTR)startpc; \
  35                 cc->cpu.a[7] = (IPTR)sp; \
  36                 cc->cpu.sr   = 0x0000; \
  37         } while (0)
  38
  39 /*
  40  * Only used by Exec/Debug()
  41  */
  42 #define PRINT_CPU_CONTEXT(ctx) \
  43     do { \
  44         int i; \
  45         UWORD sr = (ctx)->cpu.sr; \
  46         for (i = 0; i < 8; i++) { \
  47             bug("D%d: %08x%s", i, (ctx)->cpu.d[i], ((i%4) == 3) ? "\n" : " "); \
  48         } \
  49         for (i = 0; i < 8; i++) { \
  50             bug("A%d: %08x%s", i, (ctx)->cpu.a[i], ((i%4) == 3) ? "\n" : " "); \
  51         } \
  52         bug("SR: T=%02d S=%d M=%d X=%d N=%d Z=%d V=%d C=%d IMASK=%d\n", \
  53                 (sr >> 14) & 3, (sr >> 13) & 1, (sr >> 5) & 1, \
  54                 (sr >>  4) & 1, (sr >>  3) & 1, (sr >> 2) & 1, \
  55                 (sr >>  1) & 1, (sr >>  0) & 1, (sr >> 8) & 7); \
  56         bug("PC: %08x\n", (ctx)->cpu.pc); \
  57     } while (0)
  58
  59
  60 #endif /* _CPU_M68K_H */