diff options
Diffstat (limited to 'arch/csky/kernel/probes/decode-insn.c')
| -rw-r--r-- | arch/csky/kernel/probes/decode-insn.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/csky/kernel/probes/decode-insn.c b/arch/csky/kernel/probes/decode-insn.c new file mode 100644 index 000000000000..bbc4edc25dc9 --- /dev/null +++ b/arch/csky/kernel/probes/decode-insn.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/kernel.h> +#include <linux/kprobes.h> +#include <linux/module.h> +#include <linux/kallsyms.h> +#include <asm/sections.h> + +#include "decode-insn.h" +#include "simulate-insn.h" + +/* Return: + * INSN_REJECTED If instruction is one not allowed to kprobe, + * INSN_GOOD_NO_SLOT If instruction is supported but doesn't use its slot. + */ +enum probe_insn __kprobes +csky_probe_decode_insn(probe_opcode_t *addr, struct arch_probe_insn *api) +{ + probe_opcode_t insn = le32_to_cpu(*addr); + + CSKY_INSN_SET_SIMULATE(br16, insn); + CSKY_INSN_SET_SIMULATE(bt16, insn); + CSKY_INSN_SET_SIMULATE(bf16, insn); + CSKY_INSN_SET_SIMULATE(jmp16, insn); + CSKY_INSN_SET_SIMULATE(jsr16, insn); + CSKY_INSN_SET_SIMULATE(lrw16, insn); + CSKY_INSN_SET_SIMULATE(pop16, insn); + + CSKY_INSN_SET_SIMULATE(br32, insn); + CSKY_INSN_SET_SIMULATE(bt32, insn); + CSKY_INSN_SET_SIMULATE(bf32, insn); + CSKY_INSN_SET_SIMULATE(jmp32, insn); + CSKY_INSN_SET_SIMULATE(jsr32, insn); + CSKY_INSN_SET_SIMULATE(lrw32, insn); + CSKY_INSN_SET_SIMULATE(pop32, insn); + + CSKY_INSN_SET_SIMULATE(bez32, insn); + CSKY_INSN_SET_SIMULATE(bnez32, insn); + CSKY_INSN_SET_SIMULATE(bnezad32, insn); + CSKY_INSN_SET_SIMULATE(bhsz32, insn); + CSKY_INSN_SET_SIMULATE(bhz32, insn); + CSKY_INSN_SET_SIMULATE(blsz32, insn); + CSKY_INSN_SET_SIMULATE(blz32, insn); + CSKY_INSN_SET_SIMULATE(bsr32, insn); + CSKY_INSN_SET_SIMULATE(jmpi32, insn); + CSKY_INSN_SET_SIMULATE(jsri32, insn); + + return INSN_GOOD; +} |