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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Kernel Probes (KProbes)
* include/asm-mips/kprobes.h
*
* Copyright 2006 Sony Corp.
* Copyright 2010 Cavium Networks
*/
#ifndef _ASM_KPROBES_H
#define _ASM_KPROBES_H
#include <asm-generic/kprobes.h>
#ifdef CONFIG_KPROBES
#include <linux/ptrace.h>
#include <linux/types.h>
#include <asm/cacheflush.h>
#include <asm/kdebug.h>
#include <asm/inst.h>
#define __ARCH_WANT_KPROBES_INSN_SLOT
struct kprobe;
struct pt_regs;
typedef union mips_instruction kprobe_opcode_t;
#define MAX_INSN_SIZE 2
#define flush_insn_slot(p) \
do { \
if (p->addr) \
flush_icache_range((unsigned long)p->addr, \
(unsigned long)p->addr + \
(MAX_INSN_SIZE * sizeof(kprobe_opcode_t))); \
} while (0)
#define kretprobe_blacklist_size 0
void arch_remove_kprobe(struct kprobe *p);
int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
/* copy of the original instruction */
kprobe_opcode_t *insn;
};
struct prev_kprobe {
struct kprobe *kp;
unsigned long status;
unsigned long old_SR;
unsigned long saved_SR;
unsigned long saved_epc;
};
#define SKIP_DELAYSLOT 0x0001
/* per-cpu kprobe control block */
struct kprobe_ctlblk {
unsigned long kprobe_status;
unsigned long kprobe_old_SR;
unsigned long kprobe_saved_SR;
unsigned long kprobe_saved_epc;
/* Per-thread fields, used while emulating branches */
unsigned long flags;
unsigned long target_epc;
struct prev_kprobe prev_kprobe;
};
extern int kprobe_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data);
#endif /* CONFIG_KPROBES */
#endif /* _ASM_KPROBES_H */
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