include/asm-powerpc/kgdb.h

   1 /*
   2  * kgdb.h: Defines and declarations for serial line source level
   3  *         remote debugging of the Linux kernel using gdb.
   4  *
   5  * PPC Mods (C) 1998 Michael Tesch (tesch@cs.wisc.edu)
   6  *
   7  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   8  */
   9 #ifdef __KERNEL__
  10 #ifndef _PPC_KGDB_H
  11 #define _PPC_KGDB_H
  12
  13 #ifndef __ASSEMBLY__
  14
  15 /* Things specific to the gen550 backend. */
  16 struct uart_port;
  17
  18 extern void gen550_progress(char *, unsigned short);
  19 extern void gen550_kgdb_map_scc(void);
  20 extern void gen550_init(int, struct uart_port *);
  21
  22 /* Things specific to the pmac backend. */
  23 extern void zs_kgdb_hook(int tty_num);
  24
  25 /* To init the kgdb engine. (called by serial hook)*/
  26 extern void set_debug_traps(void);
  27
  28 /* To enter the debugger explicitly. */
  29 extern void breakpoint(void);
  30
  31 /* For taking exceptions
  32  * these are defined in traps.c
  33  */
  34 extern int (*debugger)(struct pt_regs *regs);
  35 extern int (*debugger_bpt)(struct pt_regs *regs);
  36 extern int (*debugger_sstep)(struct pt_regs *regs);
  37 extern int (*debugger_iabr_match)(struct pt_regs *regs);
  38 extern int (*debugger_dabr_match)(struct pt_regs *regs);
  39 extern void (*debugger_fault_handler)(struct pt_regs *regs);
  40
  41 /* What we bring to the party */
  42 int kgdb_bpt(struct pt_regs *regs);
  43 int kgdb_sstep(struct pt_regs *regs);
  44 void kgdb(struct pt_regs *regs);
  45 int kgdb_iabr_match(struct pt_regs *regs);
  46 int kgdb_dabr_match(struct pt_regs *regs);
  47
  48 /*
  49  * external low-level support routines (ie macserial.c)
  50  */
  51 extern void kgdb_interruptible(int); /* control interrupts from serial */
  52 extern void putDebugChar(char);   /* write a single character      */
  53 extern char getDebugChar(void);   /* read and return a single char */
  54
  55 #endif /* !(__ASSEMBLY__) */
  56 #endif /* !(_PPC_KGDB_H) */
  57 #endif /* __KERNEL__ */