1 ///////////////////////////////////////////////////////////////////////////////
4 /// \brief Filter for ARM 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 arm_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) {
24 if (buffer[i + 3] == 0xEB) {
25 uint32_t src = (buffer[i + 2] << 16)
26 | (buffer[i + 1] << 8)
32 dest = now_pos + (uint32_t)(i) + 8 + src;
34 dest = src - (now_pos + (uint32_t)(i) + 8);
37 buffer[i + 2] = (dest >> 16);
38 buffer[i + 1] = (dest >> 8);
48 arm_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
49 const lzma_filter_info *filters, bool is_encoder)
51 return lzma_simple_coder_init(next, allocator, filters,
52 &arm_code, 0, 4, 4, is_encoder);
57 lzma_simple_arm_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
58 const lzma_filter_info *filters)
60 return arm_coder_init(next, allocator, filters, true);
65 lzma_simple_arm_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
66 const lzma_filter_info *filters)
68 return arm_coder_init(next, allocator, filters, false);