kernel/bpf/disasm.h

   1 /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
   2  * Copyright (c) 2016 Facebook
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of version 2 of the GNU General Public
   6  * License as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11  * General Public License for more details.
  12  */
  13
  14 #ifndef __BPF_DISASM_H__
  15 #define __BPF_DISASM_H__
  16
  17 #include <linux/bpf.h>
  18 #include <linux/kernel.h>
  19 #include <linux/stringify.h>
  20 #ifndef __KERNEL__
  21 #include <stdio.h>
  22 #include <string.h>
  23 #endif
  24
  25 struct bpf_verifier_env;
  26
  27 extern const char *const bpf_alu_string[16];
  28 extern const char *const bpf_class_string[8];
  29
  30 const char *func_id_name(int id);
  31
  32 typedef __printf(2, 3) void (*bpf_insn_print_t)(struct bpf_verifier_env *env,
  33                                                 const char *, ...);
  34 typedef const char *(*bpf_insn_revmap_call_t)(void *private_data,
  35                                               const struct bpf_insn *insn);
  36 typedef const char *(*bpf_insn_print_imm_t)(void *private_data,
  37                                             const struct bpf_insn *insn,
  38                                             __u64 full_imm);
  39
  40 struct bpf_insn_cbs {
  41         bpf_insn_print_t        cb_print;
  42         bpf_insn_revmap_call_t  cb_call;
  43         bpf_insn_print_imm_t    cb_imm;
  44         void                    *private_data;
  45 };
  46
  47 void print_bpf_insn(const struct bpf_insn_cbs *cbs,
  48                     struct bpf_verifier_env *env,
  49                     const struct bpf_insn *insn,
  50                     bool allow_ptr_leaks);
  51 #endif