1 ///////////////////////////////////////////////////////////////////////////////
4 /// \brief Filter for SPARC 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 sparc_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) {
32 if ((buffer[i] == 0x40 && (buffer[i + 1] & 0xC0) == 0x00)
34 && (buffer[i + 1] & 0xC0) == 0xC0)) {
36 uint32_t src = ((uint32_t)buffer[i + 0] << 24)
37 | ((uint32_t)buffer[i + 1] << 16)
38 | ((uint32_t)buffer[i + 2] << 8)
39 | ((uint32_t)buffer[i + 3]);
45 dest = now_pos + (uint32_t)(i) + src;
47 dest = src - (now_pos + (uint32_t)(i));
51 dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF)
55 buffer[i + 0] = (uint8_t)(dest >> 24);
56 buffer[i + 1] = (uint8_t)(dest >> 16);
57 buffer[i + 2] = (uint8_t)(dest >> 8);
58 buffer[i + 3] = (uint8_t)(dest);
67 sparc_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
68 const lzma_filter_info *filters, bool is_encoder)
70 return lzma_simple_coder_init(next, allocator, filters,
71 &sparc_code, 0, 4, is_encoder);
76 lzma_simple_sparc_encoder_init(lzma_next_coder *next,
77 lzma_allocator *allocator, const lzma_filter_info *filters)
79 return sparc_coder_init(next, allocator, filters, true);
84 lzma_simple_sparc_decoder_init(lzma_next_coder *next,
85 lzma_allocator *allocator, const lzma_filter_info *filters)
87 return sparc_coder_init(next, allocator, filters, false);