mirror of https://gitee.com/openkylin/linux.git
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
#ifndef _ASM_S390_KPROBES_H
|
|
#define _ASM_S390_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 IBM Corp. 2002, 2006
|
|
*
|
|
* 2002-Oct Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel
|
|
* Probes initial implementation ( includes suggestions from
|
|
* Rusty Russell).
|
|
* 2004-Nov Modified for PPC64 by Ananth N Mavinakayanahalli
|
|
* <ananth@in.ibm.com>
|
|
* 2005-Dec Used as a template for s390 by Mike Grundy
|
|
* <grundym@us.ibm.com>
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/percpu.h>
|
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
|
|
struct pt_regs;
|
|
struct kprobe;
|
|
|
|
typedef u16 kprobe_opcode_t;
|
|
#define BREAKPOINT_INSTRUCTION 0x0002
|
|
|
|
/* Maximum instruction size is 3 (16bit) halfwords: */
|
|
#define MAX_INSN_SIZE 0x0003
|
|
#define MAX_STACK_SIZE 64
|
|
#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
|
|
(((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
|
|
? (MAX_STACK_SIZE) \
|
|
: (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
|
|
|
|
#define kretprobe_blacklist_size 0
|
|
|
|
#define KPROBE_SWAP_INST 0x10
|
|
|
|
#define FIXUP_PSW_NORMAL 0x08
|
|
#define FIXUP_BRANCH_NOT_TAKEN 0x04
|
|
#define FIXUP_RETURN_REGISTER 0x02
|
|
#define FIXUP_NOT_REQUIRED 0x01
|
|
|
|
/* Architecture specific copy of original instruction */
|
|
struct arch_specific_insn {
|
|
/* copy of original instruction */
|
|
kprobe_opcode_t *insn;
|
|
};
|
|
|
|
struct prev_kprobe {
|
|
struct kprobe *kp;
|
|
unsigned long status;
|
|
};
|
|
|
|
/* per-cpu kprobe control block */
|
|
struct kprobe_ctlblk {
|
|
unsigned long kprobe_status;
|
|
unsigned long kprobe_saved_imask;
|
|
unsigned long kprobe_saved_ctl[3];
|
|
struct prev_kprobe prev_kprobe;
|
|
struct pt_regs jprobe_saved_regs;
|
|
kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
|
|
};
|
|
|
|
void arch_remove_kprobe(struct kprobe *p);
|
|
void kretprobe_trampoline(void);
|
|
|
|
int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
|
|
int kprobe_exceptions_notify(struct notifier_block *self,
|
|
unsigned long val, void *data);
|
|
|
|
#define flush_insn_slot(p) do { } while (0)
|
|
|
|
#endif /* _ASM_S390_KPROBES_H */
|