LXR linux/arch/sh/include/asm/kprobes.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ASM_SH_KPROBES_H
   3#define __ASM_SH_KPROBES_H
   4
   5#include <asm-generic/kprobes.h>
   6
   7#define BREAKPOINT_INSTRUCTION  0xc33a
   8
   9#ifdef CONFIG_KPROBES
  10
  11#include <linux/types.h>
  12#include <linux/ptrace.h>
  13
  14typedef insn_size_t kprobe_opcode_t;
  15
  16#define MAX_INSN_SIZE 16
  17#define MAX_STACK_SIZE 64
  18#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
  19        (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
  20        ? (MAX_STACK_SIZE) \
  21        : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
  22
  23#define flush_insn_slot(p)              do { } while (0)
  24#define kretprobe_blacklist_size        0
  25
  26struct kprobe;
  27
  28void arch_remove_kprobe(struct kprobe *);
  29void kretprobe_trampoline(void);
  30void jprobe_return_end(void);
  31
  32/* Architecture specific copy of original instruction*/
  33struct arch_specific_insn {
  34        /* copy of the original instruction */
  35        kprobe_opcode_t insn[MAX_INSN_SIZE];
  36};
  37
  38struct prev_kprobe {
  39        struct kprobe *kp;
  40        unsigned long status;
  41};
  42
  43/* per-cpu kprobe control block */
  44struct kprobe_ctlblk {
  45        unsigned long kprobe_status;
  46        unsigned long jprobe_saved_r15;
  47        struct pt_regs jprobe_saved_regs;
  48        kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
  49        struct prev_kprobe prev_kprobe;
  50};
  51
  52extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
  53extern int kprobe_exceptions_notify(struct notifier_block *self,
  54                                    unsigned long val, void *data);
  55extern int kprobe_handle_illslot(unsigned long pc);
  56#else
  57
  58#define kprobe_handle_illslot(pc)       (-1)
  59
  60#endif /* CONFIG_KPROBES */
  61#endif /* __ASM_SH_KPROBES_H */
  62