1 /* 2 * Kernel Probes (KProbes) 3 * 4 * Copyright (C) 2005-2006 Atmel Corporation 5 * Copyright (C) IBM Corporation, 2002, 2004 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #ifndef __ASM_AVR32_KPROBES_H 12 #define __ASM_AVR32_KPROBES_H 13 14 #include <linux/types.h> 15 16 typedef u16 kprobe_opcode_t; 17 #define BREAKPOINT_INSTRUCTION 0xd673 /* breakpoint */ 18 #define MAX_INSN_SIZE 2 19 #define MAX_STACK_SIZE 64 /* 32 would probably be OK */ 20 21 #define kretprobe_blacklist_size 0 22 23 #define arch_remove_kprobe(p) do { } while (0) 24 25 /* Architecture specific copy of original instruction */ 26 struct arch_specific_insn { 27 kprobe_opcode_t insn[MAX_INSN_SIZE]; 28 }; 29 30 struct prev_kprobe { 31 struct kprobe *kp; 32 unsigned int status; 33 }; 34 35 /* per-cpu kprobe control block */ 36 struct kprobe_ctlblk { 37 unsigned int kprobe_status; 38 struct prev_kprobe prev_kprobe; 39 struct pt_regs jprobe_saved_regs; 40 char jprobes_stack[MAX_STACK_SIZE]; 41 }; 42 43 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); 44 extern int kprobe_exceptions_notify(struct notifier_block *self, 45 unsigned long val, void *data); 46 47 #define flush_insn_slot(p) do { } while (0) 48 49 #endif /* __ASM_AVR32_KPROBES_H */ 50