disassembler/udis86/udis86_input.h

   1 /* udis86 - libudis86/input.h
   2  *
   3  * Copyright (c) 2002-2009 Vivek Thampi
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without modification,
   7  * are permitted provided that the following conditions are met:
   8  *
   9  *     * Redistributions of source code must retain the above copyright notice,
  10  *       this list of conditions and the following disclaimer.
  11  *     * Redistributions in binary form must reproduce the above copyright notice,
  12  *       this list of conditions and the following disclaimer in the documentation
  13  *       and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  22  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  24  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26 #ifndef UD_INPUT_H
  27 #define UD_INPUT_H
  28
  29 #include "udis86_types.h"
  30
  31 uint8_t ud_inp_next(struct ud*);
  32 uint8_t ud_inp_peek(struct ud*);
  33 uint8_t ud_inp_uint8(struct ud*);
  34 uint16_t ud_inp_uint16(struct ud*);
  35 uint32_t ud_inp_uint32(struct ud*);
  36 uint64_t ud_inp_uint64(struct ud*);
  37 void ud_inp_move(struct ud*, size_t);
  38 void ud_inp_back(struct ud*);
  39
  40 /* ud_inp_init() - Initializes the input system. */
  41 #define ud_inp_init(u) \
  42 do { \
  43   u->inp_curr = 0; \
  44   u->inp_fill = 0; \
  45   u->inp_ctr  = 0; \
  46   u->inp_end  = 0; \
  47 } while (0)
  48
  49 /* ud_inp_start() - Should be called before each de-code operation. */
  50 #define ud_inp_start(u) u->inp_ctr = 0
  51
  52 /* ud_inp_back() - Resets the current pointer to its position before the current
  53  * instruction disassembly was started.
  54  */
  55 #define ud_inp_reset(u) \
  56 do { \
  57   u->inp_curr -= u->inp_ctr; \
  58   u->inp_ctr = 0; \
  59 } while (0)
  60
  61 /* ud_inp_sess() - Returns the pointer to current session. */
  62 #define ud_inp_sess(u) (u->inp_sess)
  63
  64 /* inp_cur() - Returns the current input byte. */
  65 #define ud_inp_curr(u) ((u)->inp_cache[(u)->inp_curr])
  66
  67 #endif