1 // SPDX-License-Identifier: GPL-2.0+
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 not allowed to kprobe,
14 * INSN_GOOD_NO_SLOT If instruction is supported but doesn't use its slot.
15 */
16 enum probe_insn __kprobes
17 csky_probe_decode_insn(probe_opcode_t *addr, struct arch_probe_insn *api)
18 {
19 probe_opcode_t insn = le32_to_cpu(*addr);
20
21 CSKY_INSN_SET_SIMULATE(br16, insn);
22 CSKY_INSN_SET_SIMULATE(bt16, insn);
23 CSKY_INSN_SET_SIMULATE(bf16, insn);
24 CSKY_INSN_SET_SIMULATE(jmp16, insn);
25 CSKY_INSN_SET_SIMULATE(jsr16, insn);
26 CSKY_INSN_SET_SIMULATE(lrw16, insn);
27 CSKY_INSN_SET_SIMULATE(pop16, insn);
28
29 CSKY_INSN_SET_SIMULATE(br32, insn);
30 CSKY_INSN_SET_SIMULATE(bt32, insn);
31 CSKY_INSN_SET_SIMULATE(bf32, insn);
32 CSKY_INSN_SET_SIMULATE(jmp32, insn);
33 CSKY_INSN_SET_SIMULATE(jsr32, insn);
34 CSKY_INSN_SET_SIMULATE(lrw32, insn);
35 CSKY_INSN_SET_SIMULATE(pop32, insn);
36
37 CSKY_INSN_SET_SIMULATE(bez32, insn);
38 CSKY_INSN_SET_SIMULATE(bnez32, insn);
39 CSKY_INSN_SET_SIMULATE(bnezad32, insn);
40 CSKY_INSN_SET_SIMULATE(bhsz32, insn);
41 CSKY_INSN_SET_SIMULATE(bhz32, insn);
42 CSKY_INSN_SET_SIMULATE(blsz32, insn);
43 CSKY_INSN_SET_SIMULATE(blz32, insn);
44 CSKY_INSN_SET_SIMULATE(bsr32, insn);
45 CSKY_INSN_SET_SIMULATE(jmpi32, insn);
46 CSKY_INSN_SET_SIMULATE(jsri32, insn);
47
48 return INSN_GOOD;
49 }
50
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