mirror of
https://github.com/torvalds/linux.git
synced 2024-11-13 23:51:39 +00:00
1965aae3c9
Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
#ifndef _ASM_X86_KPROBES_H
|
|
#define _ASM_X86_KPROBES_H
|
|
/*
|
|
* Kernel Probes (KProbes)
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* Copyright (C) IBM Corporation, 2002, 2004
|
|
*
|
|
* See arch/x86/kernel/kprobes.c for x86 kprobes history.
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/percpu.h>
|
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
|
|
struct pt_regs;
|
|
struct kprobe;
|
|
|
|
typedef u8 kprobe_opcode_t;
|
|
#define BREAKPOINT_INSTRUCTION 0xcc
|
|
#define RELATIVEJUMP_INSTRUCTION 0xe9
|
|
#define MAX_INSN_SIZE 16
|
|
#define MAX_STACK_SIZE 64
|
|
#define MIN_STACK_SIZE(ADDR) \
|
|
(((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \
|
|
THREAD_SIZE - (unsigned long)(ADDR))) \
|
|
? (MAX_STACK_SIZE) \
|
|
: (((unsigned long)current_thread_info()) + \
|
|
THREAD_SIZE - (unsigned long)(ADDR)))
|
|
|
|
#define flush_insn_slot(p) do { } while (0)
|
|
|
|
extern const int kretprobe_blacklist_size;
|
|
|
|
void arch_remove_kprobe(struct kprobe *p);
|
|
void kretprobe_trampoline(void);
|
|
|
|
/* Architecture specific copy of original instruction*/
|
|
struct arch_specific_insn {
|
|
/* copy of the original instruction */
|
|
kprobe_opcode_t *insn;
|
|
/*
|
|
* boostable = -1: This instruction type is not boostable.
|
|
* boostable = 0: This instruction type is boostable.
|
|
* boostable = 1: This instruction has been boosted: we have
|
|
* added a relative jump after the instruction copy in insn,
|
|
* so no single-step and fixup are needed (unless there's
|
|
* a post_handler or break_handler).
|
|
*/
|
|
int boostable;
|
|
};
|
|
|
|
struct prev_kprobe {
|
|
struct kprobe *kp;
|
|
unsigned long status;
|
|
unsigned long old_flags;
|
|
unsigned long saved_flags;
|
|
};
|
|
|
|
/* per-cpu kprobe control block */
|
|
struct kprobe_ctlblk {
|
|
unsigned long kprobe_status;
|
|
unsigned long kprobe_old_flags;
|
|
unsigned long kprobe_saved_flags;
|
|
unsigned long *jprobe_saved_sp;
|
|
struct pt_regs jprobe_saved_regs;
|
|
kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
|
|
struct prev_kprobe prev_kprobe;
|
|
};
|
|
|
|
extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
|
|
extern int kprobe_exceptions_notify(struct notifier_block *self,
|
|
unsigned long val, void *data);
|
|
#endif /* _ASM_X86_KPROBES_H */
|