1 // SPDX-License-Identifier: GPL-2.0+ 1
2
3 #include <linux/kernel.h>
4 #include <linux/kprobes.h>
5 #include <linux/module.h>
6 #include <linux/kallsyms.h>
7 #include <asm/sections.h>
8
9 #include "decode-insn.h"
10 #include "simulate-insn.h"
11
12 /* Return:
13 * INSN_REJECTED If instruction is one n
14 * INSN_GOOD_NO_SLOT If instruction is suppo
15 */
16 enum probe_insn __kprobes
17 riscv_probe_decode_insn(probe_opcode_t *addr,
18 {
19 probe_opcode_t insn = *addr;
20
21 /*
22 * Reject instructions list:
23 */
24 RISCV_INSN_REJECTED(system,
25 RISCV_INSN_REJECTED(fence,
26
27 /*
28 * Simulate instructions list:
29 * TODO: the REJECTED ones below need
30 */
31 #ifdef CONFIG_RISCV_ISA_C
32 RISCV_INSN_REJECTED(c_jal,
33 RISCV_INSN_REJECTED(c_ebreak,
34
35 RISCV_INSN_SET_SIMULATE(c_j,
36 RISCV_INSN_SET_SIMULATE(c_jr,
37 RISCV_INSN_SET_SIMULATE(c_jalr,
38 RISCV_INSN_SET_SIMULATE(c_beqz,
39 RISCV_INSN_SET_SIMULATE(c_bnez,
40 #endif
41
42 RISCV_INSN_SET_SIMULATE(jal,
43 RISCV_INSN_SET_SIMULATE(jalr,
44 RISCV_INSN_SET_SIMULATE(auipc,
45 RISCV_INSN_SET_SIMULATE(branch,
46
47 return INSN_GOOD;
48 }
49
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