input.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef UD_INPUT_H
#define UD_INPUT_H
 
#include "pedigree/kernel/debugger/libudis86/types.h"
 
uint8_t inp_next(struct ud*);
uint8_t inp_peek(struct ud*);
uint8_t inp_uint8(struct ud*);
uint16_t inp_uint16(struct ud*);
uint32_t inp_uint32(struct ud*);
uint64_t inp_uint64(struct ud*);
void inp_move(struct ud*, size_t);
void inp_back(struct ud*);
 
/* inp_init() - Initializes the input system. */
#define inp_init(u)  \
  do {               \
    u->inp_curr = 0; \
    u->inp_fill = 0; \
    u->inp_ctr = 0;  \
    u->inp_end = 0;  \
  } while (0)
 
/* inp_start() - Should be called before each de-code operation. */
#define inp_start(u) u->inp_ctr = 0
 
/* inp_back() - Resets the current pointer to its position before the current
 * instruction disassembly was started.
 */
#define inp_reset(u)           \
  do {                         \
    u->inp_curr -= u->inp_ctr; \
    u->inp_ctr = 0;            \
  } while (0)
 
/* inp_sess() - Returns the pointer to current session. */
#define inp_sess(u) (u->inp_sess)
 
/* inp_cur() - Returns the current input byte. */
#define inp_curr(u) ((u)->inp_cache[(u)->inp_curr])
 
#endif