1 ///////////////////////////////////////////////////////////////////////////////
4 /// \brief Filter for SPARC binaries
6 // Authors: Igor Pavlov
9 // This file has been put into the public domain.
10 // You can do whatever you want with this file.
12 ///////////////////////////////////////////////////////////////////////////////
14 #include "simple_private.h"
18 sparc_code(lzma_simple *simple lzma_attribute((__unused__)),
19 uint32_t now_pos, bool is_encoder,
20 uint8_t *buffer, size_t size)
23 for (i = 0; i + 4 <= size; i += 4) {
25 if ((buffer[i] == 0x40 && (buffer[i + 1] & 0xC0) == 0x00)
27 && (buffer[i + 1] & 0xC0) == 0xC0)) {
29 uint32_t src = ((uint32_t)buffer[i + 0] << 24)
30 | ((uint32_t)buffer[i + 1] << 16)
31 | ((uint32_t)buffer[i + 2] << 8)
32 | ((uint32_t)buffer[i + 3]);
38 dest = now_pos + (uint32_t)(i) + src;
40 dest = src - (now_pos + (uint32_t)(i));
44 dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF)
48 buffer[i + 0] = (uint8_t)(dest >> 24);
49 buffer[i + 1] = (uint8_t)(dest >> 16);
50 buffer[i + 2] = (uint8_t)(dest >> 8);
51 buffer[i + 3] = (uint8_t)(dest);
60 sparc_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
61 const lzma_filter_info *filters, bool is_encoder)
63 return lzma_simple_coder_init(next, allocator, filters,
64 &sparc_code, 0, 4, 4, is_encoder);
69 lzma_simple_sparc_encoder_init(lzma_next_coder *next,
70 lzma_allocator *allocator, const lzma_filter_info *filters)
72 return sparc_coder_init(next, allocator, filters, true);
77 lzma_simple_sparc_decoder_init(lzma_next_coder *next,
78 lzma_allocator *allocator, const lzma_filter_info *filters)
80 return sparc_coder_init(next, allocator, filters, false);