cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

chardev-internal.h (2402B)

      1/*
      2 * QEMU Character device internals
      3 *
      4 * Copyright (c) 2003-2008 Fabrice Bellard
      5 *
      6 * Permission is hereby granted, free of charge, to any person obtaining a copy
      7 * of this software and associated documentation files (the "Software"), to deal
      8 * in the Software without restriction, including without limitation the rights
      9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10 * copies of the Software, and to permit persons to whom the Software is
     11 * furnished to do so, subject to the following conditions:
     12 *
     13 * The above copyright notice and this permission notice shall be included in
     14 * all copies or substantial portions of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22 * THE SOFTWARE.
     23 */
     24#ifndef CHARDEV_INTERNAL_H
     25#define CHARDEV_INTERNAL_H
     26
     27#include "chardev/char.h"
     28#include "chardev/char-fe.h"
     29#include "qom/object.h"
     30
     31#define MAX_MUX 4
     32#define MUX_BUFFER_SIZE 32 /* Must be a power of 2.  */
     33#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
     34
     35struct MuxChardev {
     36    Chardev parent;
     37    CharBackend *backends[MAX_MUX];
     38    CharBackend chr;
     39    int focus;
     40    int mux_cnt;
     41    int term_got_escape;
     42    int max_size;
     43    /* Intermediate input buffer catches escape sequences even if the
     44       currently active device is not accepting any input - but only until it
     45       is full as well. */
     46    unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
     47    int prod[MAX_MUX];
     48    int cons[MAX_MUX];
     49    int timestamps;
     50
     51    /* Protected by the Chardev chr_write_lock.  */
     52    int linestart;
     53    int64_t timestamps_start;
     54};
     55typedef struct MuxChardev MuxChardev;
     56
     57DECLARE_INSTANCE_CHECKER(MuxChardev, MUX_CHARDEV,
     58                         TYPE_CHARDEV_MUX)
     59#define CHARDEV_IS_MUX(chr)                             \
     60    object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
     61
     62void mux_set_focus(Chardev *chr, int focus);
     63void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event);
     64
     65Object *get_chardevs_root(void);
     66
     67#endif /* CHAR_MUX_H */