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 #include <asm-generic/kprobes.h> 13 14 #ifdef CONFIG_KPROBES 15 16 typedef u16 kprobe_opcode_t; 17 18 #define UNIMP_S_INSTRUCTION 0x79e0 19 #define TRAP_S_2_INSTRUCTION 0x785e 20 21 #define MAX_INSN_SIZE 8 22 #define MAX_STACK_SIZE 64 23 24 struct arch_specific_insn { 25 int is_short; 26 kprobe_opcode_t *t1_addr, *t2_addr; 27 kprobe_opcode_t t1_opcode, t2_opcode; 28 }; 29 30 #define flush_insn_slot(p) do { } while (0) 31 32 #define kretprobe_blacklist_size 0 33 34 struct kprobe; 35 36 void arch_remove_kprobe(struct kprobe *p); 37 38 int kprobe_exceptions_notify(struct notifier_block *self, 39 unsigned long val, void *data); 40 41 struct prev_kprobe { 42 struct kprobe *kp; 43 unsigned long status; 44 }; 45 46 struct kprobe_ctlblk { 47 unsigned int kprobe_status; 48 struct pt_regs jprobe_saved_regs; 49 char jprobes_stack[MAX_STACK_SIZE]; 50 struct prev_kprobe prev_kprobe; 51 }; 52 53 int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause); 54 void kretprobe_trampoline(void); 55 void trap_is_kprobe(unsigned long address, struct pt_regs *regs); 56 #else 57 static void trap_is_kprobe(unsigned long address, struct pt_regs *regs) 58 { 59 } 60 #endif /* CONFIG_KPROBES */ 61 62 #endif /* _ARC_KPROBES_H */ 63