text: /*	$NetBSD: bpfjit.h,v 1.4 2014/06/25 19:32:37 alnsn Exp $	*/
  
  /*-
   * Copyright (c) 2011-2014 Alexander Nasonov.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
   * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #ifndef _NET_BPFJIT_H_
  #define _NET_BPFJIT_H_
  
  #ifndef _KERNEL
  #include <stddef.h>
  #include <stdint.h>
  #endif
  
  #include <sys/types.h>
  
  #ifdef __linux
  /* Unused include removed */
  /* #include <pcap-bpf.h> */
  #else
  #include <net/bpf.h>
  #endif
  
  /*
   * Return value of a function generated by sljit have sljit_uw type
   * which can have a greater width. In such cases, we rely on the fact
   * that calling conventions use same registers for smaller types.
   * SLJIT_MOV_UI is passed to sljit_emit_return() to make sure that the
   * return value is truncated to unsigned int.
   */
  typedef unsigned int (*bpfjit_func_t)(const bpf_ctx_t *, bpf_args_t *);
  
  bpfjit_func_t bpfjit_generate_code(const bpf_ctx_t *,
      const struct bpf_insn *, size_t);
  void bpfjit_free_code(bpfjit_func_t);
  
  #ifdef _KERNEL
  struct bpfjit_ops {
  	bpfjit_func_t (*bj_generate_code)(const bpf_ctx_t *,
  	    const struct bpf_insn *, size_t);
  	void (*bj_free_code)(bpfjit_func_t);
  };
  
  extern struct bpfjit_ops bpfjit_module_ops;
  #endif
  
  #endif /* !_NET_BPFJIT_H_ */
  