From 6fca8abef7e6d7be1a9e6d93dd0f2b7fbc5b28e5 Mon Sep 17 00:00:00 2001
From: Pasha <pasha@member.fsf.org>
Date: Tue, 20 Feb 2024 18:55:36 +0000
Subject: initial risc-v example

---
 riscv/include/asm/kprobes.h | 54 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 riscv/include/asm/kprobes.h

(limited to 'riscv/include/asm/kprobes.h')

diff --git a/riscv/include/asm/kprobes.h b/riscv/include/asm/kprobes.h
new file mode 100644
index 0000000..78ea44f
--- /dev/null
+++ b/riscv/include/asm/kprobes.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copied from arch/arm64/include/asm/kprobes.h
+ *
+ * Copyright (C) 2013 Linaro Limited
+ * Copyright (C) 2017 SiFive
+ */
+
+#ifndef _ASM_RISCV_KPROBES_H
+#define _ASM_RISCV_KPROBES_H
+
+#include <asm-generic/kprobes.h>
+
+#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
+
+#define flush_insn_slot(p)		do { } while (0)
+#define kretprobe_blacklist_size	0
+
+#include <asm/probes.h>
+
+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);
+int kprobe_fault_handler(struct pt_regs *regs, unsigned int trapnr);
+bool kprobe_breakpoint_handler(struct pt_regs *regs);
+bool kprobe_single_step_handler(struct pt_regs *regs);
+#else
+static inline bool kprobe_breakpoint_handler(struct pt_regs *regs)
+{
+	return false;
+}
+
+static inline bool kprobe_single_step_handler(struct pt_regs *regs)
+{
+	return false;
+}
+#endif /* CONFIG_KPROBES */
+#endif /* _ASM_RISCV_KPROBES_H */
-- 
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