i386/linux/linux-2.3.21/include/asm-m68k/kgdb.h

   1 /*
   2  *  include/asm-m68k/kgdb.h
   3  *
   4  *  Copyright (C) 1996 Roman Hodek
   5  */
   6
   7 #ifndef __ASM_M68k_KGDB_H
   8 #define __ASM_M68k_KGDB_H
   9
  10 /*
  11  * Structure to save all register values in, already in the order gdb wants
  12  * it. Note that the upper half of the SR field is recycled for the FORMAT and
  13  * VECTOR fields. Hope that doesn't confuse gdb... That upper half is ignored
  14  * on exiting the stub, so gdb can modify it as it likes.
  15  */
  16
  17 #define GDBREG_A6       14
  18 #define GDBREG_A7       15
  19 #define GDBREG_SP       15
  20 #define GDBREG_SR       16
  21 #define GDBREG_PC       17
  22 #define GDBREG_FP0      18
  23 #define GDBREG_FP7      25
  24 #define GDBREG_FPCR     26
  25 #define GDBREG_FPIAR 28
  26
  27 #define GDBOFFA_D6      (6*4)
  28 #define GDBOFFA_A3      (11*4)
  29
  30 #define NUMREGSBYTES    180
  31
  32 #ifndef __ASSEMBLY__
  33
  34 struct gdb_regs {
  35     long                   regs[16];            /* d0-a7 */
  36     unsigned       format :  4;         /* frame format specifier */
  37     unsigned       vector : 12;         /* vector offset */
  38     unsigned short sr;                          /* status register */
  39     unsigned long  pc;                          /* program counter */
  40         unsigned long  fpregs[8*3];             /* fp0-fp7 */
  41         unsigned long  fpcntl[3];               /* fpcr, fpsr, fpiar */
  42 };
  43
  44 extern struct gdb_regs kgdb_registers;
  45 extern void kgdb_init( void );
  46 struct frame;
  47 extern asmlinkage void enter_kgdb( struct pt_regs *fp );
  48
  49 extern int kgdb_initialized;
  50
  51 /*
  52  * This function will generate a breakpoint exception.  It is used at the
  53  * beginning of a program to sync up with a debugger and can be used
  54  * otherwise as a quick means to stop program execution and "break" into
  55  * the debugger.
  56  */
  57 extern inline void breakpoint( void )
  58 {
  59         if (!kgdb_initialized)
  60                 /* if kgdb not inited, do nothing */
  61                 return;
  62
  63         /* breakpoint instruction is TRAP #15 */
  64         __asm__ __volatile__ ( "trap #15" );
  65 }
  66
  67 /*
  68  * This function will report a SIGABORT to gdb.
  69  */
  70 extern inline void kgdb_abort( void )
  71 {
  72         if (!kgdb_initialized)
  73                 /* if kgdb not inited, do nothing */
  74                 return;
  75
  76         /* TRAP #14 is reported as SIGABORT */
  77         __asm__ __volatile__ ( "trap #14" );
  78 }
  79
  80 #endif /* __ASSEMBLY__ */
  81
  82 #endif /* __ASM_M68k_KGDB_H */
  83