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

dmg-lzfse.c (1898B)

      1/*
      2 * DMG lzfse uncompression
      3 *
      4 * Copyright (c) 2018 Julio Cesar Faracco
      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#include "qemu/osdep.h"
     25#include "dmg.h"
     26#include <lzfse.h>
     27
     28static int dmg_uncompress_lzfse_do(char *next_in, unsigned int avail_in,
     29                                   char *next_out, unsigned int avail_out)
     30{
     31    size_t out_size = lzfse_decode_buffer((uint8_t *) next_out, avail_out,
     32                                          (uint8_t *) next_in, avail_in,
     33                                          NULL);
     34
     35    /* We need to decode the single chunk only. */
     36    /* So, out_size == avail_out is not an error here. */
     37    if (out_size > 0) {
     38        return out_size;
     39    }
     40    return -1;
     41}
     42
     43__attribute__((constructor))
     44static void dmg_lzfse_init(void)
     45{
     46    assert(!dmg_uncompress_lzfse);
     47    dmg_uncompress_lzfse = dmg_uncompress_lzfse_do;
     48}