2017-11-24 21:00:38 +07:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
2006-09-20 20:58:39 +07:00
|
|
|
#ifndef _ASM_S390_KPROBES_H
|
|
|
|
|
#define _ASM_S390_KPROBES_H
|
|
|
|
|
/*
|
|
|
|
|
* Kernel Probes (KProbes)
|
|
|
|
|
*
|
2012-07-20 16:15:04 +07:00
|
|
|
* Copyright IBM Corp. 2002, 2006
|
2006-09-20 20:58:39 +07:00
|
|
|
*
|
|
|
|
|
* 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>
|
|
|
|
|
*/
|
2017-05-02 18:20:11 +07:00
|
|
|
#include <linux/types.h>
|
2017-02-28 05:26:56 +07:00
|
|
|
#include <asm-generic/kprobes.h>
|
|
|
|
|
|
|
|
|
|
#define BREAKPOINT_INSTRUCTION 0x0002
|
|
|
|
|
|
2017-05-02 18:20:11 +07:00
|
|
|
#define FIXUP_PSW_NORMAL 0x08
|
|
|
|
|
#define FIXUP_BRANCH_NOT_TAKEN 0x04
|
|
|
|
|
#define FIXUP_RETURN_REGISTER 0x02
|
|
|
|
|
#define FIXUP_NOT_REQUIRED 0x01
|
|
|
|
|
|
|
|
|
|
int probe_is_prohibited_opcode(u16 *insn);
|
|
|
|
|
int probe_get_fixup_type(u16 *insn);
|
|
|
|
|
int probe_is_insn_relative_long(u16 *insn);
|
|
|
|
|
|
2017-02-28 05:26:56 +07:00
|
|
|
#ifdef CONFIG_KPROBES
|
2006-09-20 20:58:39 +07:00
|
|
|
#include <linux/ptrace.h>
|
|
|
|
|
#include <linux/percpu.h>
|
2017-02-09 00:51:37 +07:00
|
|
|
#include <linux/sched/task_stack.h>
|
2006-09-20 20:58:39 +07:00
|
|
|
|
2013-09-12 04:24:14 +07:00
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
|
|
|
|
2006-09-20 20:58:39 +07:00
|
|
|
struct pt_regs;
|
|
|
|
|
struct kprobe;
|
|
|
|
|
|
|
|
|
|
typedef u16 kprobe_opcode_t;
|
|
|
|
|
|
|
|
|
|
/* 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) < \
|
2016-06-27 12:57:21 +07:00
|
|
|
(((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) \
|
2006-09-20 20:58:39 +07:00
|
|
|
? (MAX_STACK_SIZE) \
|
2016-06-27 12:57:21 +07:00
|
|
|
: (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR)))
|
2006-09-20 20:58:39 +07:00
|
|
|
|
2007-10-16 15:27:49 +07:00
|
|
|
#define kretprobe_blacklist_size 0
|
2006-09-20 20:58:39 +07:00
|
|
|
|
|
|
|
|
/* Architecture specific copy of original instruction */
|
|
|
|
|
struct arch_specific_insn {
|
|
|
|
|
/* copy of original instruction */
|
2013-09-12 04:24:14 +07:00
|
|
|
kprobe_opcode_t *insn;
|
2014-10-15 17:17:38 +07:00
|
|
|
unsigned int is_ftrace_insn : 1;
|
2006-09-20 20:58:39 +07:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
void arch_remove_kprobe(struct kprobe *p);
|
|
|
|
|
void kretprobe_trampoline(void);
|
|
|
|
|
|
2007-05-04 23:47:46 +07:00
|
|
|
int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
|
|
|
|
|
int kprobe_exceptions_notify(struct notifier_block *self,
|
|
|
|
|
unsigned long val, void *data);
|
|
|
|
|
|
2006-09-20 20:58:39 +07:00
|
|
|
#define flush_insn_slot(p) do { } while (0)
|
|
|
|
|
|
2017-02-28 05:26:56 +07:00
|
|
|
#endif /* CONFIG_KPROBES */
|
2006-09-20 20:58:39 +07:00
|
|
|
#endif /* _ASM_S390_KPROBES_H */
|
