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| 1 /////////////////////////////////////////////////////////////////////////////// | 1 /////////////////////////////////////////////////////////////////////////////// |
| 2 // | 2 // |
| 3 /// \file armthumb.c | 3 /// \file armthumb.c |
| 4 /// \brief Filter for ARM-Thumb binaries | 4 /// \brief Filter for ARM-Thumb binaries |
| 5 /// | 5 /// |
| 6 // Authors: Igor Pavlov | 6 // Authors: Igor Pavlov |
| 7 // Lasse Collin | 7 // Lasse Collin |
| 8 // | 8 // |
| 9 // This file has been put into the public domain. | 9 // This file has been put into the public domain. |
| 10 // You can do whatever you want with this file. | 10 // You can do whatever you want with this file. |
| 11 // | 11 // |
| 12 /////////////////////////////////////////////////////////////////////////////// | 12 /////////////////////////////////////////////////////////////////////////////// |
| 13 | 13 |
| 14 #include "simple_private.h" | 14 #include "simple_private.h" |
| 15 | 15 |
| 16 | 16 |
| 17 static size_t | 17 static size_t |
| 18 armthumb_code(lzma_simple *simple lzma_attribute((unused)), | 18 armthumb_code(lzma_simple *simple lzma_attribute((__unused__)), |
| 19 uint32_t now_pos, bool is_encoder, | 19 uint32_t now_pos, bool is_encoder, |
| 20 uint8_t *buffer, size_t size) | 20 uint8_t *buffer, size_t size) |
| 21 { | 21 { |
| 22 size_t i; | 22 size_t i; |
| 23 for (i = 0; i + 4 <= size; i += 2) { | 23 for (i = 0; i + 4 <= size; i += 2) { |
| 24 if ((buffer[i + 1] & 0xF8) == 0xF0 | 24 if ((buffer[i + 1] & 0xF8) == 0xF0 |
| 25 && (buffer[i + 3] & 0xF8) == 0xF8) { | 25 && (buffer[i + 3] & 0xF8) == 0xF8) { |
| 26 uint32_t src = ((buffer[i + 1] & 0x7) << 19) | 26 uint32_t src = ((buffer[i + 1] & 0x7) << 19) |
| 27 | (buffer[i + 0] << 11) | 27 | (buffer[i + 0] << 11) |
| 28 | ((buffer[i + 3] & 0x7) << 8) | 28 | ((buffer[i + 3] & 0x7) << 8) |
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| 65 return armthumb_coder_init(next, allocator, filters, true); | 65 return armthumb_coder_init(next, allocator, filters, true); |
| 66 } | 66 } |
| 67 | 67 |
| 68 | 68 |
| 69 extern lzma_ret | 69 extern lzma_ret |
| 70 lzma_simple_armthumb_decoder_init(lzma_next_coder *next, | 70 lzma_simple_armthumb_decoder_init(lzma_next_coder *next, |
| 71 lzma_allocator *allocator, const lzma_filter_info *filters) | 71 lzma_allocator *allocator, const lzma_filter_info *filters) |
| 72 { | 72 { |
| 73 return armthumb_coder_init(next, allocator, filters, false); | 73 return armthumb_coder_init(next, allocator, filters, false); |
| 74 } | 74 } |
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