1 /* 2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef _ARC_KPROBES_H 10 #define _ARC_KPROBES_H 11 12 #ifdef CONFIG_KPROBES 13 14 typedef u16 kprobe_opcode_t; 15 16 #define UNIMP_S_INSTRUCTION 0x79e0 17 #define TRAP_S_2_INSTRUCTION 0x785e 18 19 #define MAX_INSN_SIZE 8 20 #define MAX_STACK_SIZE 64 21 22 struct arch_specific_insn { 23 int is_short; 24 kprobe_opcode_t *t1_addr, *t2_addr; 25 kprobe_opcode_t t1_opcode, t2_opcode; 26 }; 27 28 #define flush_insn_slot(p) do { } while (0) 29 30 #define kretprobe_blacklist_size 0 31 32 struct kprobe; 33 34 void arch_remove_kprobe(struct kprobe *p); 35 36 int kprobe_exceptions_notify(struct notifier_block *self, 37 unsigned long val, void *data); 38 39 struct prev_kprobe { 40 struct kprobe *kp; 41 unsigned long status; 42 }; 43 44 struct kprobe_ctlblk { 45 unsigned int kprobe_status; 46 struct pt_regs jprobe_saved_regs; 47 char jprobes_stack[MAX_STACK_SIZE]; 48 struct prev_kprobe prev_kprobe; 49 }; 50 51 int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause); 52 void kretprobe_trampoline(void); 53 void trap_is_kprobe(unsigned long cause, unsigned long address, 54 struct pt_regs *regs); 55 #else 56 static void trap_is_kprobe(unsigned long cause, unsigned long address, 57 struct pt_regs *regs) 58 { 59 } 60 #endif 61 62 #endif 63