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b57c2f1240
Implement the kretprobes on riscv arch by using rethook machenism which abstracts general kretprobe info into a struct rethook_node to be embedded in the struct kretprobe_instance. Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Binglei Wang <l3b2w1@gmail.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20221025151831.1097417-1-conor@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
45 lines
1 KiB
C
45 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copied from arch/arm64/include/asm/kprobes.h
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*
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* Copyright (C) 2013 Linaro Limited
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* Copyright (C) 2017 SiFive
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*/
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#ifndef _ASM_RISCV_KPROBES_H
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#define _ASM_RISCV_KPROBES_H
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#include <asm-generic/kprobes.h>
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#ifdef CONFIG_KPROBES
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#include <linux/types.h>
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#include <linux/ptrace.h>
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#include <linux/percpu.h>
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#define __ARCH_WANT_KPROBES_INSN_SLOT
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#define MAX_INSN_SIZE 2
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#define flush_insn_slot(p) do { } while (0)
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#define kretprobe_blacklist_size 0
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#include <asm/probes.h>
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struct prev_kprobe {
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struct kprobe *kp;
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unsigned int status;
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};
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/* per-cpu kprobe control block */
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struct kprobe_ctlblk {
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unsigned int kprobe_status;
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unsigned long saved_status;
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struct prev_kprobe prev_kprobe;
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};
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void arch_remove_kprobe(struct kprobe *p);
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int kprobe_fault_handler(struct pt_regs *regs, unsigned int trapnr);
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bool kprobe_breakpoint_handler(struct pt_regs *regs);
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bool kprobe_single_step_handler(struct pt_regs *regs);
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#endif /* CONFIG_KPROBES */
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#endif /* _ASM_RISCV_KPROBES_H */
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