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 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 12 * 2 of the License, or (at your option) any later version. 13 */ 14 #ifndef _PPC64_KGDB_H 15 #define _PPC64_KGDB_H 16 17 #ifndef __ASSEMBLY__ 18 /* To initialize the serial, first thing called */ 19 extern void zs_kgdb_hook(int tty_num); 20 /* To init the kgdb engine. (called by serial hook)*/ 21 extern void set_debug_traps(void); 22 23 /* To enter the debugger explicitly. */ 24 extern void breakpoint(void); 25 26 /* For taking exceptions 27 * these are defined in traps.c 28 */ 29 extern void (*debugger)(struct pt_regs *regs); 30 extern int (*debugger_bpt)(struct pt_regs *regs); 31 extern int (*debugger_sstep)(struct pt_regs *regs); 32 extern int (*debugger_iabr_match)(struct pt_regs *regs); 33 extern int (*debugger_dabr_match)(struct pt_regs *regs); 34 extern void (*debugger_fault_handler)(struct pt_regs *regs); 35 36 /* What we bring to the party */ 37 int kgdb_bpt(struct pt_regs *regs); 38 int kgdb_sstep(struct pt_regs *regs); 39 void kgdb(struct pt_regs *regs); 40 int kgdb_iabr_match(struct pt_regs *regs); 41 int kgdb_dabr_match(struct pt_regs *regs); 42 static void kgdb_fault_handler(struct pt_regs *regs); 43 static void handle_exception (struct pt_regs *regs); 44 45 /* 46 * external low-level support routines (ie macserial.c) 47 */ 48 extern void kgdb_interruptible(int); /* control interrupts from serial */ 49 extern void putDebugChar(char); /* write a single character */ 50 extern char getDebugChar(void); /* read and return a single char */ 51 52 #endif /* !(__ASSEMBLY__) */ 53 #endif /* !(_PPC64_KGDB_H) */ 54