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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ASM_LOONGARCH_KPROBES_H
#define __ASM_LOONGARCH_KPROBES_H
#include <asm-generic/kprobes.h>
#ifdef CONFIG_KPROBES
#include <asm/inst.h>
#include <asm/cacheflush.h>
#define __ARCH_WANT_KPROBES_INSN_SLOT
#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
typedef union loongarch_instruction kprobe_opcode_t;
/* Architecture specific copy of original instruction */
struct arch_specific_insn {
/* copy of the original instruction */
kprobe_opcode_t *insn;
/* restore address after simulation */
unsigned long restore;
};
struct prev_kprobe {
struct kprobe *kp;
unsigned int status;
};
/* per-cpu kprobe control block */
struct kprobe_ctlblk {
unsigned int kprobe_status;
unsigned long saved_status;
struct prev_kprobe prev_kprobe;
};
void arch_remove_kprobe(struct kprobe *p);
bool kprobe_fault_handler(struct pt_regs *regs, int trapnr);
bool kprobe_breakpoint_handler(struct pt_regs *regs);
bool kprobe_singlestep_handler(struct pt_regs *regs);
void __kretprobe_trampoline(void);
void *trampoline_probe_handler(struct pt_regs *regs);
#else /* !CONFIG_KPROBES */
static inline bool kprobe_breakpoint_handler(struct pt_regs *regs) { return false; }
static inline bool kprobe_singlestep_handler(struct pt_regs *regs) { return false; }
#endif /* CONFIG_KPROBES */
#endif /* __ASM_LOONGARCH_KPROBES_H */
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