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/*
* arch/tile/include/asm/kprobes.h
*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
#ifndef _ASM_TILE_KPROBES_H
#define _ASM_TILE_KPROBES_H
#include <asm-generic/kprobes.h>
#ifdef CONFIG_KPROBES
#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/percpu.h>
#include <arch/opcode.h>
#define __ARCH_WANT_KPROBES_INSN_SLOT
#define MAX_INSN_SIZE 2
#define kretprobe_blacklist_size 0
typedef tile_bundle_bits kprobe_opcode_t;
#define flush_insn_slot(p) \
flush_icache_range((unsigned long)p->addr, \
(unsigned long)p->addr + \
(MAX_INSN_SIZE * sizeof(kprobe_opcode_t)))
struct kprobe;
/* Architecture specific copy of original instruction. */
struct arch_specific_insn {
kprobe_opcode_t *insn;
};
struct prev_kprobe {
struct kprobe *kp;
unsigned long status;
unsigned long saved_pc;
};
#define MAX_JPROBES_STACK_SIZE 128
#define MAX_JPROBES_STACK_ADDR \
(((unsigned long)current_thread_info()) + THREAD_SIZE - 32 \
- sizeof(struct pt_regs))
#define MIN_JPROBES_STACK_SIZE(ADDR) \
((((ADDR) + MAX_JPROBES_STACK_SIZE) > MAX_JPROBES_STACK_ADDR) \
? MAX_JPROBES_STACK_ADDR - (ADDR) \
: MAX_JPROBES_STACK_SIZE)
/* per-cpu kprobe control block. */
struct kprobe_ctlblk {
unsigned long kprobe_status;
unsigned long kprobe_saved_pc;
unsigned long jprobe_saved_sp;
struct prev_kprobe prev_kprobe;
struct pt_regs jprobe_saved_regs;
char jprobes_stack[MAX_JPROBES_STACK_SIZE];
};
extern tile_bundle_bits breakpoint2_insn;
extern tile_bundle_bits breakpoint_insn;
void arch_remove_kprobe(struct kprobe *);
extern int kprobe_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data);
#endif /* CONFIG_KPROBES */
#endif /* _ASM_TILE_KPROBES_H */
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