decode-insn.c (1492B)
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 */ 16enum probe_insn __kprobes 17csky_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}