1 ///////////////////////////////////////////////////////////////////////////////
4 /// \brief Filter for ARM binaries
6 // Copyright (C) 1999-2006 Igor Pavlov
7 // Copyright (C) 2007 Lasse Collin
9 // This library is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU Lesser General Public
11 // License as published by the Free Software Foundation; either
12 // version 2.1 of the License, or (at your option) any later version.
14 // This library is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // Lesser General Public License for more details.
19 ///////////////////////////////////////////////////////////////////////////////
21 #include "simple_private.h"
25 arm_code(lzma_simple *simple lzma_attribute((unused)),
26 uint32_t now_pos, bool is_encoder,
27 uint8_t *buffer, size_t size)
30 for (i = 0; i + 4 <= size; i += 4) {
31 if (buffer[i + 3] == 0xEB) {
32 uint32_t src = (buffer[i + 2] << 16)
33 | (buffer[i + 1] << 8)
39 dest = now_pos + (uint32_t)(i) + 8 + src;
41 dest = src - (now_pos + (uint32_t)(i) + 8);
44 buffer[i + 2] = (dest >> 16);
45 buffer[i + 1] = (dest >> 8);
55 arm_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
56 const lzma_filter_info *filters, bool is_encoder)
58 return lzma_simple_coder_init(next, allocator, filters,
59 &arm_code, 0, 4, is_encoder);
64 lzma_simple_arm_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
65 const lzma_filter_info *filters)
67 return arm_coder_init(next, allocator, filters, true);
72 lzma_simple_arm_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
73 const lzma_filter_info *filters)
75 return arm_coder_init(next, allocator, filters, false);