mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-21 18:11:39 +00:00
1a59d1b8e0
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#ifndef _ASM_KPROBES_H
|
|
#define _ASM_KPROBES_H
|
|
/*
|
|
* Kernel Probes (KProbes)
|
|
*
|
|
* Copyright (C) IBM Corporation, 2002, 2004
|
|
* Copyright (C) Intel Corporation, 2005
|
|
*
|
|
* 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
|
|
* <anil.s.keshavamurthy@intel.com> adapted from i386
|
|
*/
|
|
#include <asm-generic/kprobes.h>
|
|
#include <asm/break.h>
|
|
|
|
#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
|
|
|
|
#ifdef CONFIG_KPROBES
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/percpu.h>
|
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
#define MAX_INSN_SIZE 2 /* last half is for kprobe-booster */
|
|
#define NOP_M_INST (long)(1<<27)
|
|
#define BRL_INST(i1, i2) ((long)((0xcL << 37) | /* brl */ \
|
|
(0x1L << 12) | /* many */ \
|
|
(((i1) & 1) << 36) | ((i2) << 13))) /* imm */
|
|
|
|
typedef union cmp_inst {
|
|
struct {
|
|
unsigned long long qp : 6;
|
|
unsigned long long p1 : 6;
|
|
unsigned long long c : 1;
|
|
unsigned long long r2 : 7;
|
|
unsigned long long r3 : 7;
|
|
unsigned long long p2 : 6;
|
|
unsigned long long ta : 1;
|
|
unsigned long long x2 : 2;
|
|
unsigned long long tb : 1;
|
|
unsigned long long opcode : 4;
|
|
unsigned long long reserved : 23;
|
|
}f;
|
|
unsigned long long l;
|
|
} cmp_inst_t;
|
|
|
|
struct kprobe;
|
|
|
|
typedef struct _bundle {
|
|
struct {
|
|
unsigned long long template : 5;
|
|
unsigned long long slot0 : 41;
|
|
unsigned long long slot1_p0 : 64-46;
|
|
} quad0;
|
|
struct {
|
|
unsigned long long slot1_p1 : 41 - (64-46);
|
|
unsigned long long slot2 : 41;
|
|
} quad1;
|
|
} __attribute__((__aligned__(16))) bundle_t;
|
|
|
|
struct prev_kprobe {
|
|
struct kprobe *kp;
|
|
unsigned long status;
|
|
};
|
|
|
|
#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f)
|
|
/* per-cpu kprobe control block */
|
|
#define ARCH_PREV_KPROBE_SZ 2
|
|
struct kprobe_ctlblk {
|
|
unsigned long kprobe_status;
|
|
unsigned long *bsp;
|
|
unsigned long cfm;
|
|
atomic_t prev_kprobe_index;
|
|
struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
|
|
};
|
|
|
|
#define kretprobe_blacklist_size 0
|
|
|
|
#define SLOT0_OPCODE_SHIFT (37)
|
|
#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
|
|
#define SLOT2_OPCODE_SHIFT (37)
|
|
|
|
#define INDIRECT_CALL_OPCODE (1)
|
|
#define IP_RELATIVE_CALL_OPCODE (5)
|
|
#define IP_RELATIVE_BRANCH_OPCODE (4)
|
|
#define IP_RELATIVE_PREDICT_OPCODE (7)
|
|
#define LONG_BRANCH_OPCODE (0xC)
|
|
#define LONG_CALL_OPCODE (0xD)
|
|
#define flush_insn_slot(p) do { } while (0)
|
|
|
|
typedef struct kprobe_opcode {
|
|
bundle_t bundle;
|
|
} kprobe_opcode_t;
|
|
|
|
/* Architecture specific copy of original instruction*/
|
|
struct arch_specific_insn {
|
|
/* copy of the instruction to be emulated */
|
|
kprobe_opcode_t *insn;
|
|
#define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
|
|
#define INST_FLAG_FIX_BRANCH_REG 2
|
|
#define INST_FLAG_BREAK_INST 4
|
|
#define INST_FLAG_BOOSTABLE 8
|
|
unsigned long inst_flag;
|
|
unsigned short target_br_reg;
|
|
unsigned short slot;
|
|
};
|
|
|
|
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);
|
|
|
|
extern void invalidate_stacked_regs(void);
|
|
extern void flush_register_stack(void);
|
|
extern void arch_remove_kprobe(struct kprobe *p);
|
|
|
|
#endif /* CONFIG_KPROBES */
|
|
#endif /* _ASM_KPROBES_H */
|