arch/csky/kernel/probes/decode-insn.c

   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 }